Method and equipment for testing corrosion performance of cooling liquid

Abstract

The invention discloses a cooling liquid corrosion performance testing method and equipment, and belongs to the technical field of cooling liquid performance tests.The cooling liquid corrosion performance testing equipment comprises a bottom frame, a test board is fixedly connected to one side of the top end of the bottom frame, a detection mechanism is assembled in the test board, and an industrial personal computer is fixedly connected to the top end of the test board; a test door is arranged on the other side of the top end of the bottom frame from the side close to the test board to the side far away from the test board, a test cabinet is fixedly connected to the other side of the top end of the bottom frame, an opening and closing movable mechanism is assembled between the test door and the test cabinet, two first clamping plates are arranged in the test door, and a first fixing mechanism is assembled between one first clamping plate and the test door. The normal-temperature standing chamber and the high-temperature vibration chamber are arranged, the corrosion performance of the cooling liquid when an automobile is not used can be simulated and tested, the corrosion performance of the cooling liquid when the automobile is used can also be simulated and tested, and the corrosion performance of the cooling liquid can be more accurately tested by combining the test results of the normal-temperature standing chamber and the high-temperature vibration chamber.

Description

Technical Field

[0001] The present invention belongs to the technical field of coolant performance testing, and particularly relates to a method and device for testing the corrosion performance of coolant. Background Art

[0002] A new energy electric vehicle refers to a vehicle that uses an on-vehicle rechargeable battery as a power source, drives the wheels with an electric motor, and meets the requirements of road traffic and safety regulations.

[0003] Different from traditional fuel vehicles, the power source of new energy electric vehicles is the battery and motor system. During operation, components such as the battery and motor will generate a large amount of heat. The coolant shoulders the important task of dissipating heat for these key components to ensure their stable operation within an appropriate temperature range. If the heat dissipation effect of the coolant is poor, the battery may overheat, resulting in accelerated attenuation of battery capacity and shortened lifespan, and even posing safety hazards. Motor overheating will reduce its efficiency and affect the power output of the vehicle. Therefore, the coolant is an important medium to ensure the efficient and safe operation of new energy electric vehicles.

[0004] The cooling system of new energy electric vehicles contains various metal materials such as aluminum, copper, and cast iron. If the coolant has strong corrosiveness, it will chemically react with these metals, resulting in a thinner wall thickness and lower strength of the metal components, ultimately affecting the sealing performance and structural integrity of the cooling system. Once the cooling system leaks and the coolant is lost, effective heat dissipation cannot be achieved, and in severe cases, the battery or motor may be damaged, making the vehicle unable to drive normally. Therefore, the corrosion performance test of the coolant is particularly important.

[0005] Currently, the general method for testing the corrosion performance of coolant is to conduct the test under high-temperature static conditions, which cannot simulate the specific scenarios of coolant use in automobiles and is likely to affect the test results of the coolant corrosion performance test.

[0006] In view of this, a method and device for testing the corrosion performance of coolant are designed to solve the above problems. Summary of the Invention

[0007] To solve the problems raised in the above background art, the present invention provides a method and device for testing the corrosion performance of coolant, which has the characteristic of being able to more accurately test the corrosion performance of the coolant.

[0008] Another object of the present invention is to provide a method for testing the corrosion performance of coolant.

[0009] To achieve the above object, the present invention provides the following technical solutions: A method and device for testing the corrosion performance of a coolant, comprising: a chassis, on one side of the top of the chassis is fixedly connected with a test bench, inside the test bench is assembled with a detection mechanism, on the top of the test bench is fixedly connected with an industrial control computer, on the other side of the top of the chassis, from near to far from the test bench side, a test door and a test cabinet are respectively arranged, between the test door and the test cabinet is assembled with an opening and closing mechanism, inside the test door are arranged two first clamping plates, between one of the first clamping plates and the test door is assembled with a first fixing mechanism, between the other first clamping plate and the test door is assembled with a first moving mechanism, inside the test cabinet is fixedly connected with a heat insulation plate, the heat insulation plate divides the inside of the test cabinet into a normal temperature static chamber and a high temperature vibration chamber, on the side wall of the high temperature vibration chamber far from the normal temperature static chamber, from near to far from the test door side, a temperature sensor and a heater are respectively fixedly connected, in the middle of the inside of the normal temperature static chamber and the high temperature vibration chamber are respectively arranged support plates, between the support plate in the normal temperature static chamber and the normal temperature static chamber is assembled with a second fixing mechanism, between the support plate in the high temperature vibration chamber and the high temperature vibration chamber is assembled with a second moving mechanism, on the side far from the test door in the inside of the normal temperature static chamber and the high temperature vibration chamber are respectively arranged second clamping plates, between the second clamping plate in the normal temperature static chamber and the normal temperature static chamber is assembled with a third fixing mechanism, between the second clamping plate in the high temperature vibration chamber and the high temperature vibration chamber are respectively assembled with a third moving mechanism, between the second moving mechanism and the test cabinet is assembled with an up and down driving mechanism, between the second clamping plate in the high temperature vibration chamber and the up and down driving mechanism is assembled with a front and back driving mechanism, the detection mechanism and the up and down driving mechanism are electrically connected to the industrial control computer.

[0010] Further, the detection mechanism includes an installation cavity opened inside the test bench, inside the installation cavity is fixedly connected with a tester, the tester is composed of an analytical balance, an optical microscope with an imaging system and a pH meter integrated in an instrument housing, the analytical balance, the optical microscope with an imaging system and the pH meter are electrically connected to the industrial control computer.

[0011] Further, the opening and closing mechanism includes eight first limit blocks fixedly connected to the four corners of the test door near the test cabinet side and movably arranged at the four corners of the test cabinet, and four second limit blocks fixedly connected to the four corners of the test cabinet near the test door side and located between two first limit blocks at the same side corner. Between the two first limit blocks at the same side corner is fixedly connected with a first limit rod, the second limit block at the same side corner is movably sleeved on the first limit rod by an opening and sleeving method, and a first spring is elastically connected between the first limit block and the second limit block at the same side corner on the outer side of the first limit rod.

[0012] Further, the first fixing mechanism includes a first fixing rod fixedly connected inside the test door. A first connecting seat is fixedly sleeved on the first fixing rod. A second connecting seat is fixedly connected to the side wall of the test cabinet near the first connecting seat. Four second limiting rods are respectively fixedly connected to the four corners of the side wall of the test cabinet near the second connecting seat. The second clamping plate is fixedly connected to the four second limiting rods;

[0013] The difference between the first moving mechanism and the first fixing mechanism is that the first connecting seat is movably sleeved on the first fixing rod by an opening and sleeving method. A third spring is elastically connected between the test door and the first connecting seat outside the first fixing rod. The second clamping plate is movably sleeved on the four second limiting rods by an opening and sleeving method. A second spring is elastically connected between the second connecting seat and the second clamping plate outside the second limiting rod.

[0014] Further, the second fixing mechanism includes two third limiting rods symmetrically fixedly connected inside the normal temperature static chamber. A movable seat is fixedly sleeved on the third limiting rod. A supporting plate is fixedly connected between the two movable seats;

[0015] The difference between the second moving mechanism and the second fixing mechanism is that the two movable seats are movably sleeved on the two third limiting rods by an opening and sleeving method.

[0016] Further, the structures of the third fixing mechanism and the third moving mechanism are the same as those of the first fixing mechanism and the first moving mechanism, except that the first fixing rod is fixedly connected to the test cabinet.

[0017] Further, the up and down driving mechanism includes a motor fixedly connected to the outer wall of the test cabinet, a driving shaft arranged inside the high-temperature vibration chamber, and a first rack fixedly connected to the side wall of the movable seat near the driving shaft inside the high-temperature vibration chamber. One end of the driving shaft is connected to the output end of the motor through a coupling, and the other end is fixedly sleeved with a first gear. The first gear is meshed with the first rack. The motor is electrically connected to the industrial control computer.

[0018] Further, the front and back driving mechanism includes a first conical wheel fixedly sleeved in the middle of the driving shaft, a follower shaft fixedly connected to the bottom wall of the high-temperature vibration chamber, and a second rack fixedly connected to the side wall of the second clamping plate near the follower shaft inside the high-temperature vibration chamber. A second conical wheel and a second gear are fixedly sleeved on the follower shaft from top to bottom in sequence. The second conical wheel is meshed with the first conical wheel. The second gear is meshed with the second rack. The second rack is higher than the second gear, and it can satisfy both up and down movement and front and back movement while moving up and down.

[0019] The test method of a coolant corrosion performance test method and device includes the following steps:

[0020] S1: Prepare two pipes with plug heads at both ends;

[0021] S2: Place the pipe without coolant in the instrument housing of the tester. Measure the weight of the pipe with an analytical balance, take a photo of the appearance of the pipe with an optical microscope equipped with an imaging system, and measure the pH value of the pipe with a pH meter. Transmit the measurement and photo data to an industrial control computer, which analyzes and stores the data.

[0022] S3: Open the plug at one end of the pipe, fill the pipe with coolant, and then plug the plug.

[0023] S4: Pull the test door, driving the first limit block and the first limit rod to move, stretching the first spring. The test door gradually moves away from the test cabinet, and the test cabinet gradually opens until it is opened to a degree suitable for placing two pipes and then stops.

[0024] S5: Place the two pipes through the opening of the test cabinet into the two supporting plates and move them until one end plug of the two pipes is placed in the slots of the two second clamping plates and cannot move any further and then stops.

[0025] S6: Push the test door, the first spring resets, driving the test door to gradually approach the test cabinet, and the test cabinet gradually closes until it closes and stops. At this time, the other end plugs of the two pipes are placed in the slots of the two first clamping plates to achieve positioning.

[0026] S7: Test the corrosion resistance of the coolant under normal temperature and static state in the indoor pipe, simulating the state when the car is not in use.

[0027] S8: Test the corrosion resistance of the coolant under high temperature and vibration state in the indoor pipe, simulating the state when the car is in use. That is, control the heater, temperature sensor, and motor to start through the industrial control computer. The heater heats up to raise the temperature in the high-temperature vibration chamber. The temperature sensor monitors the temperature in the high-temperature vibration chamber and transmits a signal to the industrial control computer when the set temperature is reached, causing the industrial control computer to control the heater to turn off. The motor drive output rotates periodically forward and backward, driving the drive shaft to rotate periodically forward and backward. The drive shaft drives the first conical wheel and the first gear to rotate periodically forward and backward at the same time. The first conical wheel drives the second conical wheel to rotate periodically forward and backward. The second conical wheel drives the follower shaft to rotate periodically forward and backward. The follower shaft drives the second gear to rotate periodically forward and backward. During the periodic forward and backward rotation of the second gear, it drives the second rack to move periodically back and forth. The second rack drives the extrusion of the second spring to move back and forth, that is, driving the pipe to move periodically back and forth. During the periodic forward and backward rotation of the first gear, it drives the first rack to move periodically up and down. The first rack drives the extrusion of the third spring to move up and down to achieve high-temperature vibration.

[0028] S9: The simulation ends. The initial state is restored under the control of the industrial control computer. After cooling to room temperature, the test door is opened, and the two pipes are taken out for weight testing, appearance comparison, and pH value testing. Based on the weight changes, appearance differences, and pH value change data of the pipes before and after the test, the corrosion performance of the coolant is analyzed.

[0029] Compared with the prior art, the beneficial effects of the present invention are as follows:

[0030] The present invention is provided with a normal temperature static chamber and a high temperature vibration chamber, which can not only simulate and test the corrosion performance of the coolant when the vehicle is not in use, but also simulate and test the corrosion performance of the coolant when the vehicle is in use. Combining the two test results can more accurately test the corrosion performance of the coolant. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] Figure 1 is a three-dimensional view of the present invention;

[0032] Figure 2 is a partial cross-sectional view of the present invention;

[0033] Figure 3 is of the present invention Figure 2 an enlarged view of part A in;

[0034] Figure 4 is of the present invention Figure 2 an enlarged view of part B in;

[0035] Figure 5 is of the present invention Figure 2 an enlarged view of part C in; Figure 6 is a partial appearance view of the pipe of the present invention before and after the test;

[0036] In the figure: 1, chassis; 2, test bench; 3, industrial control computer; 4, test cabinet; 5, test door; 6, first clamping plate; 7, normal temperature static chamber; 8, supporting plate; 9, second clamping plate; 10, heat insulation plate; 11, high temperature vibration chamber; 12, heater; 13, temperature sensor;

[0037] 101, installation cavity; 102, tester;

[0038] 201, first limit block; 202, first spring; 203, second limit block; 204, first limit rod;

[0039] 301, first connecting seat; 302, first fixing rod; 303, second connecting seat; 304, second limit rod;

[0040] 401, second spring; 402, third spring;

[0041] 501, movable seat; 502, third limit rod;

[0042] 601. Motor; 602. Drive shaft; 603. First gear; 604. First rack

[0043] 701. First conical wheel; 702. Follow-up shaft; 703. Second conical wheel; 704. Second gear; 705. Second rack Detailed implementation mode

[0044] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0045] Embodiment 1

[0046] The present invention provides the following technical solutions: A method and device for testing the corrosion performance of a coolant, including: a chassis 1, one side of the top of the chassis 1 is fixedly connected with a test bench 2, a detection mechanism is assembled inside the test bench 2, an industrial control computer 3 is fixedly connected to the top of the test bench 2, on the other side of the top of the chassis 1, a test door 5 and a test cabinet 4 are respectively arranged from near to far away from the test bench 2 side, an opening and closing movement mechanism is assembled between the test door 5 and the test cabinet 4, two first clamping plates 6 are arranged inside the test door 5, a first fixing mechanism is assembled between one first clamping plate 6 and the test door 5, a first moving mechanism is assembled between the other first clamping plate 6 and the test door 5, a heat insulation plate 10 is fixedly connected inside the test cabinet 4, the heat insulation plate 10 divides the inside of the test cabinet 4 into a normal temperature static chamber 7 and a high temperature vibration chamber 11, a temperature sensor 13 and a heater 12 are respectively fixedly connected to the side wall of the high temperature vibration chamber 11 far away from the normal temperature static chamber 7 from near to far away from the test door 5 side, a supporting plate 8 is respectively arranged in the middle of the normal temperature static chamber 7 and the high temperature vibration chamber 11, a second fixing mechanism is assembled between the supporting plate 8 in the normal temperature static chamber 7 and the normal temperature static chamber 7, a second moving mechanism is assembled between the supporting plate 8 in the high temperature vibration chamber 11 and the high temperature vibration chamber 11, second clamping plates 9 are respectively arranged on the side of the normal temperature static chamber 7 and the high temperature vibration chamber 11 far away from the test door 5, a third fixing mechanism is assembled between the second clamping plate 9 in the normal temperature static chamber 7 and the normal temperature static chamber 7, a third moving mechanism is respectively assembled between the second clamping plate 9 in the high temperature vibration chamber 11 and the high temperature vibration chamber 11, an up and down driving mechanism is assembled between the second moving mechanism and the test cabinet 4, a front and back driving mechanism is assembled between the second clamping plate 9 in the high temperature vibration chamber 11 and the up and down driving mechanism, and the detection mechanism and the up and down driving mechanism are electrically connected to the industrial control computer 3.

[0047] Embodiment 2

[0048] The difference between this embodiment and Embodiment 1 is as follows:

[0049] Specifically, the detection mechanism includes an installation cavity 101 opened inside the test bench 2. A tester 102 is fixedly connected inside the installation cavity 101. The tester 102 is composed of an analytical balance, an optical microscope with an imaging system, and a pH meter integrated inside the instrument housing. The analytical balance, the optical microscope with an imaging system, and the pH meter are electrically connected to the industrial control computer 3.

[0050] Embodiment III

[0051] The difference between this embodiment and Embodiment II is as follows:

[0052] Specifically, the opening and closing mechanism includes eight first limit blocks 201 fixedly connected to the four corners of the test door 5 close to the test cabinet 4 and movably arranged at the four corners of the test cabinet 4, and four second limit blocks 203 fixedly connected between the two first limit blocks 201 at the four corners of the test cabinet 4 close to the test door 5 on the same side. A first limit rod 204 is fixedly connected between the two first limit blocks 201 at the same corner. The second limit block 203 at the same corner is movably sleeved on the first limit rod 204 by an opening and socketing method. A first spring 202 is elastically connected between the first limit block 201 and the second limit block 203 at the same corner outside the first limit rod 204.

[0053] Embodiment IV

[0054] The difference between this embodiment and Embodiment III is as follows:

[0055] Specifically, the first fixing mechanism includes a first fixing rod 302 fixedly connected inside the test door 5. A first connecting seat 301 is fixedly sleeved on the first fixing rod 302. A second connecting seat 303 is fixedly connected to the side wall of the second connecting seat 303 close to the test cabinet 4. Four second limit rods 304 are respectively fixedly connected to the four corners of the side wall of the second connecting seat 303 close to the test cabinet 4. The second clamping plate 9 is fixedly connected to the four second limit rods 304;

[0056] The difference between the first moving mechanism and the first fixing mechanism is that the first connecting seat 301 is movably sleeved on the first fixing rod 302 by an opening and socketing method. A third spring 402 is elastically connected between the test door 5 and the first connecting seat 301 outside the first fixing rod 302. The second clamping plate 9 is movably sleeved on the four second limit rods 304 by an opening and socketing method. A second spring 401 is elastically connected between the second connecting seat 303 and the second clamping plate 9 outside the second limit rod 304.

[0057] Embodiment V

[0058] The difference between this embodiment and Embodiment IV is as follows:

[0059] Specifically, the second fixing mechanism includes two third limiting rods 502 symmetrically fixed inside the normal temperature static chamber 7. A movable seat 501 is fixedly sleeved on the third limiting rod 502, and a supporting plate 8 is fixed between the two movable seats 501;

[0060] The difference between the second movable mechanism and the second fixing mechanism is that the two movable seats 501 are movably sleeved on the two third limiting rods 502 in a manner of being sleeved through an opening.

[0061] Embodiment Six

[0062] The difference between this embodiment and Embodiment Five is as follows:

[0063] Specifically, the structures of the third fixing mechanism and the third movable mechanism are the same as those of the first fixing mechanism and the first movable mechanism, the difference being that the first fixing rod 302 is fixedly connected to the test cabinet 4.

[0064] Embodiment Seven

[0065] The difference between this embodiment and Embodiment Six is as follows:

[0066] Specifically, the up-and-down driving mechanism includes a motor 601 fixedly connected to the outer wall of the test cabinet 4, a driving shaft 602 arranged inside the high-temperature vibration chamber 11, and a first rack 604 fixedly connected to the side wall of the movable seat 501 on the side of the driving shaft 602 inside the high-temperature vibration chamber 11. One end of the driving shaft 602 is connected to the output end of the motor 601 through a coupling, and the other end is fixedly sleeved with a first gear 603. The first gear 603 is meshed and connected with the first rack 604, and the motor 601 is electrically connected to the industrial control computer 3.

[0067] Embodiment Eight

[0068] The difference between this embodiment and Embodiment Seven is as follows:

[0069] Specifically, the front-and-back driving mechanism includes a first conical wheel 701 fixedly sleeved in the middle of the driving shaft 602, a follower shaft 702 fixedly connected to the bottom wall of the high-temperature vibration chamber 11, and a second rack 705 fixedly connected to the side wall of the second clamping plate 9 inside the high-temperature vibration chamber 11 near the follower shaft 702. A second conical wheel 703 and a second gear 704 are fixedly sleeved on the follower shaft 702 from top to bottom. The second conical wheel 703 is meshed and connected with the first conical wheel 701, and the second gear 704 is meshed and connected with the second rack 705. The second rack 705 is higher than the second gear 704, enabling both up-and-down movement and front-and-back movement to be satisfied.

[0070] A test method for the corrosion performance of a coolant and a test method for the equipment include the following steps:

[0071] S1: Prepare two pipes with plug heads at both ends;

[0072] S2: Place the pipe without coolant in the instrument housing of the tester 102. Measure the weight of the pipe with an analytical balance, take pictures of the appearance of the pipe with an optical microscope equipped with an imaging system, and measure the pH value of the pipe with a pH meter. Transmit the measurement and picture data to the industrial control computer 3, and the industrial control computer 3 retains the data after analysis;

[0073] S3: Open the plug at one end of the pipe, fill the pipe with coolant, and plug the plug;

[0074] S4: Pull the test door 5 to drive the first limit block 201 and the first limit rod 204 to move, stretch the first spring 202, and the test door 5 gradually moves away from the test cabinet 4. The test cabinet 4 gradually opens until the test cabinet 4 is opened to a degree suitable for placing two pipes and then stops;

[0075] S5: Place the two pipes through the opening of the test cabinet 4 into the two supporting plates 8 and move them until one end plug of the two pipes is placed in the slots of the two second clamping plates 9 and cannot move further and then stops;

[0076] S6: Push the test door 5, the first spring 202 resets, drive the test door 5 to gradually approach the test cabinet 4, and the test cabinet 4 gradually closes until the test cabinet 4 closes and stops. At this time, the other end plugs of the two pipes are placed in the slots of the two first clamping plates 6 to achieve positioning;

[0077] S7: Test the corrosion performance of the coolant under normal temperature static state for the pipes in the normal temperature static chamber 7, simulating the state when the vehicle is not in use;

[0078] S8: Test the corrosion performance of the coolant in the pipes inside the high-temperature vibration chamber 11 under high-temperature vibration conditions, simulating the vehicle usage state. That is, start the heater 12, temperature sensor 13, and motor 601 through the industrial control computer 3. The heater 12 heats up to raise the temperature inside the high-temperature vibration chamber 11. The temperature sensor 13 monitors the temperature inside the high-temperature vibration chamber 11 and transmits a signal to the industrial control computer 3 when the set temperature is reached, causing the industrial control computer 3 to control the heater 12 to turn off. The output end of the motor 601 rotates periodically forward and backward, driving the drive shaft 602 to rotate periodically forward and backward. The drive shaft 602 drives the first conical wheel 701 and the first gear 603 to rotate periodically forward and backward simultaneously. The first conical wheel 701 drives the second conical wheel 703 to rotate periodically forward and backward. The second conical wheel 703 drives the follower shaft 702 to rotate periodically forward and backward. The follower shaft 702 drives the second gear 704 to rotate periodically forward and backward. During the periodic forward and backward rotation of the second gear 704, it drives the second rack 705 to move periodically back and forth. The second rack 705 drives the extrusion of the second spring 401 to move back and forth, that is, drives the pipe to move periodically back and forth. During the periodic forward and backward rotation of the first gear 603, it drives the first rack 604 to move periodically up and down. The first rack 604 drives the extrusion of the third spring 402 to move up and down to achieve high-temperature vibration;

[0079] S9: After the simulation ends, restore to the initial state through the industrial control computer 3. After cooling to room temperature, open the test door 5 and take out the two pipes for weight testing, appearance comparison, and pH value testing. Analyze the corrosion performance of the coolant based on the weight change, appearance difference, and pH value change data before and after the pipe testing.

[0080] This application conducts coolant corrosion performance tests on pipes made of copper, solder, brass, steel, cast iron, and cast aluminum respectively;

[0081] The weight data before and after the test is as follows:

[0082]

[0083] The cut local appearance before and after the test is as Figure 6 shown. Judge the appearance change data based on the colorimetric card comparison of the cut local appearance;

[0084] The pH value data before and after the test is as follows:

[0085]

[0086]

[0087] From the above test results, it can be seen that this application can accurately test the corrosion performance of the coolant.

[0088] Although embodiments of the present invention have been shown and described, it will be understood by those of ordinary skill in the art that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principles and spirit of the present invention, and the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A method and device for testing the corrosion performance of a coolant, characterized in that: include: A chassis, a test bench is fixedly connected to one side of the top of the chassis, a detection mechanism is installed inside the test bench, an industrial control computer is fixedly connected to the top of the test bench, a test door and a test cabinet are respectively arranged on the other side of the top of the chassis from the side close to the test bench to the side far away from the test bench, an opening and closing movable mechanism is installed between the test door and the test cabinet, two first clamping plates are arranged inside the test door, a first fixing mechanism is installed between one of the first clamping plates and the test door, and a first movable mechanism is installed between the other first clamping plate and the test door, a heat insulation plate is fixedly connected inside the test cabinet, the heat insulation plate separates the inside of the test cabinet into a normal temperature still room and a high temperature vibration room, and the high temperature vibration room is respectively fixedly connected with a temperature sensor and a heater on the side wall away from the normal temperature still room from the side close to the test door to the side far away from the test door, A supporting plate is respectively arranged in the middle of the normal temperature still chamber and the high temperature vibration chamber, a second fixing mechanism is installed between the supporting plate in the normal temperature still chamber and the normal temperature still chamber, a second movable mechanism is installed between the supporting plate in the high temperature vibration chamber and the high temperature vibration chamber, a second clamping plate is respectively arranged on the side away from the test door in the normal temperature still chamber and the high temperature vibration chamber, a third fixing mechanism is installed between the second clamping plate in the normal temperature still chamber and the normal temperature still chamber, a third movable mechanism is respectively installed between the second clamping plate in the high temperature vibration chamber and the high temperature vibration chamber, an upper and lower driving mechanism is installed between the second movable mechanism and the test cabinet, a front and rear driving mechanism is installed between the second clamping plate in the high temperature vibration chamber and the upper and lower driving mechanism, and the detection mechanism and the upper and lower driving mechanism are electrically connected to the industrial control computer.

2. A method and device for testing the corrosion performance of a coolant according to claim 1, characterized in that: The detection mechanism includes an installation cavity opened inside the test bench, and a tester is fixedly connected inside the installation cavity. The tester is composed of an analytical balance, an optical microscope with an imaging system, and a pH meter integrated in the instrument shell. The analytical balance, the optical microscope with an imaging system, and the pH meter are electrically connected to an industrial control computer.

3. A method and device for testing the corrosion performance of a coolant according to claim 2, characterized in that: The opening and closing movable mechanism includes eight first limit blocks fixedly connected to the four corners of the test door near the test cabinet side and movably arranged at the four corners of the test cabinet, and four second limit blocks fixedly connected to the four corners of the test cabinet near the test door side and located between the two first limit blocks at the same side corners, a first limit rod is fixedly connected between the two first limit blocks at the same side corner, the second limit block at the same side corner is movably sleeved on the first limit rod by means of an open hole sleeve connection, and a first spring is elastically connected outside the first limit rod between the first limit block and the second limit block at the same side corner.

4. A method and device for testing the corrosion performance of a coolant according to claim 3, characterized in that: The first fixing mechanism comprises a first fixing rod fixedly connected to the inside of the test door, a first connecting seat is fixedly sleeved on the first fixing rod, a second connecting seat is fixedly connected to the first connecting seat near the side wall of the test cabinet, the second connecting seat is fixedly connected to second limiting rods respectively near the four corners of the side wall of the test cabinet, and the second clamping plate is fixedly connected to the four second limiting rods; The difference between the first movable mechanism and the first fixed mechanism is that the first connecting seat is movably connected to the first fixed rod by means of an open hole sleeve connection, the first fixed rod is elastically connected with a third spring between the test door and the first connecting seat, the second clamping plate is movably connected to the four second limiting rods by means of an open hole sleeve connection, and the second limiting rod is elastically connected with a second spring between the second connecting seat and the second clamping plate.

5. A method and device for testing the corrosion performance of a coolant according to claim 4, characterized in that: The second fixing mechanism comprises two third limiting rods symmetrically fixed inside the room, a movable seat is fixedly sleeved on the third limiting rod, and the supporting plate is fixed between the two movable seats; The difference between the second movable mechanism and the second fixed mechanism is that the two movable seats are movably sleeved on the two third limiting rods by means of open-hole sleeve connection.

6. A method and device for testing the corrosion performance of a coolant according to claim 5, characterized in that: The structures of the third fixing mechanism and the third movable mechanism are the same as those of the first fixing mechanism and the first movable mechanism, except that the first fixing rod is fixedly connected to the test cabinet.

7. A method and device for testing the corrosion performance of a coolant according to claim 6, characterized in that: The up and down driving mechanism includes a motor fixedly connected to the outer wall of the test cabinet, a driving shaft arranged inside the high-temperature vibration chamber, and a first rack fixedly connected to the side wall of the movable seat near the driving shaft side in the high-temperature vibration chamber. One end of the driving shaft is connected to the output end of the motor through a coupling, and the other end is fixedly sleeved with a first gear. The first gear is meshed with the first rack, and the motor is electrically connected to the industrial control computer.

8. A method and device for testing the corrosion performance of a coolant according to claim 7, characterized in that: The front-to-back driving mechanism includes a first conical wheel fixedly sleeved in the middle of the driving shaft, a follower shaft fixedly connected to the bottom wall of the high-temperature vibration chamber, and a second rack fixedly connected to the second clamping plate in the high-temperature vibration chamber near the side wall of the follower shaft. The follower shaft is fixedly sleeved with a second conical wheel and a second gear in sequence from top to bottom, the second conical wheel is meshedly connected to the first conical wheel, the second gear is meshedly connected to the second rack, and the second rack is higher than the second gear, so it can satisfy the forward and backward movement while satisfying the up and down movement.

9. The method for testing the corrosion performance of a coolant and the device according to claim 8, characterized in that: The following steps are involved: S1: Prepare two pipes with plugs at both ends; S2: Place the pipe without refrigerant in the instrument housing of the tester, measure the weight of the pipe with an analytical balance, take a photo of the appearance of the pipe with an optical microscope equipped with an imaging system, measure the pH value of the pipe with a pH meter, and transmit the measured and photographed data to an industrial control computer, which will analyze and store the data; S3: Open the plug at one end of the pipeline, put the refrigerant into the pipeline, and plug the plug; S4: Pull the test door, drive the first limit block and the first limit rod to move, stretch the first spring, and gradually move the test door away from the test cabinet, and the test cabinet gradually opens until the test cabinet opens to a suitable degree for placing two pipes and stops; S5: Place the two pipes through the opening of the test cabinet into the two supporting plates and move until the plugs at one end of the two pipes are placed in the grooves of the two second clamping plates and cannot move any further; S6: Push the test door, the first spring resets, and drives the test door to gradually approach the test cabinet, and the test cabinet gradually closes until the test cabinet stops closing. At this time, the plugs at the other ends of the two pipes are placed in the grooves of the two first clamping plates to achieve positioning; S7: Test the coolant corrosion performance of the indoor pipes at room temperature, simulating the state of the car not being used; S8: The coolant corrosion performance of the pipeline in the high-temperature vibration chamber is tested under the high-temperature vibration state to simulate the use state of the car, that is, the heater, temperature sensor and motor are controlled by the industrial control computer to start, the heater heats up the temperature in the high-temperature vibration chamber, the temperature sensor monitors the temperature in the high-temperature vibration chamber, and transmits a signal to the industrial control computer when the set temperature is reached, so that the industrial control computer controls the heater to turn off, the motor drives the output end to rotate forward and reverse periodically, drives the drive shaft to rotate forward and reverse periodically, the drive shaft drives the first conical wheel and the first gear to rotate forward and reverse periodically at the same time, the first conical wheel drives the second conical wheel to rotate reversely periodically, the second conical wheel drives the follower shaft to rotate reversely periodically, the follower shaft drives the second gear to rotate reversely periodically, the second gear drives the second rack to move forward and backward periodically during the reverse rotation, the second rack drives the second spring to move forward and backward, that is, drives the pipeline to move forward and backward periodically, the first gear drives the first rack to move up and down periodically during the forward and reverse rotation, the first rack drives the third spring to move up and down, so as to achieve high-temperature vibration; S9: After the simulation is completed, the initial state is restored through the control of the industrial computer. After cooling to room temperature, the test door is opened and the two pipes are taken out for weight test, appearance comparison and pH value test. Based on the weight change, appearance difference and pH value change data before and after the pipe test, the corrosion performance of the coolant is analyzed.

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