A short-circuit prevention and isolation water supplementing device for a thermal management test bench

Abstract

The application discloses a kind of short-circuit prevention isolation water replenishing device for thermal management test bench, including deflector, still including anti-freezing liquid kettle, above deflector, for storing the anti-freezing liquid required by thermal management test;Anti-freezing liquid supply box, below deflector, for storing the anti-freezing liquid to be replenished and receiving recycled medium;Recycling component is fixed to one end of deflector, for filtering leaked anti-freezing liquid and guiding it to recycling path.The deflector of the application can not only physically isolate the anti-freezing liquid kettle above and the electrical components below, block the contact of electronic devices due to accidental leakage of anti-freezing liquid, to reduce the risk of short circuit, but also guide the leaked medium to the recycling component through the inclined plate wing and the drainage groove, to avoid stagnation and overflow.The recycling component uses metal grid filter plate, trapezoidal lower cavity and magnetic cover plate to achieve efficient filtration, rapid recovery and recycling of leaked anti-freezing liquid, and the two work together to enhance the safety and resource utilization efficiency of the test.

Description

Technical Field

[0001] This invention relates to the field of automotive thermal management system testing technology, specifically to a short-circuit isolation and water replenishment device for a thermal management test bench. Background Technology

[0002] Automotive thermal management system testing is a technical means of simulating the performance, safety, and durability of a real vehicle under extreme and harsh conditions by setting up real vehicle pipelines and components in a high-precision environmental simulation chamber. Its core is to ensure that the controlled object is within the optimal operating temperature range by comprehensively regulating heat transfer. In automotive thermal management system testing, the refrigerant is the core medium for heat transfer, and its performance and safety directly affect the reliability of the test results.

[0003] Currently, to more realistically simulate real vehicle operating conditions, the components in the test bench need to be arranged within a specific range. Among them, the pipelines related to antifreeze are built and fixed by the tester. Since the antifreeze reservoir needs to perform functions such as replenishing and venting, it is usually installed at the highest point of the bench so that the antifreeze can flow naturally by gravity. However, in the operation of the existing test bench, the self-built antifreeze pipelines are at risk of leakage or bursting. If the high-positioned reservoir leaks, the antifreeze can easily come into direct contact with the electronic components and wiring harnesses below, causing short circuits and generating electric sparks. The industry only uses simple materials such as foam boards for isolation, which cannot effectively prevent contact. Therefore, there is an urgent need for a structure that integrates physical isolation, leakage collection and automatic replenishment functions to meet the safety requirements of new refrigerant testing. Summary of the Invention

[0004] The present invention addresses the problem of overly simplistic solutions in existing technologies by providing a short-circuit isolation and water replenishment device for thermal management test benches. This device solves the technical problem mentioned in the background section where leaks in the self-built antifreeze pipelines and high-level water tanks on the test benches lead to short circuits caused by antifreeze contacting electronic components.

[0005] The technical solution adopted by the present invention to solve the above-mentioned technical problems is as follows: A short-circuit isolation water supply device for a thermal management test bench includes a guide plate. Also includes: The antifreeze reservoir, located above the deflector, is used to store the antifreeze required for thermal management testing.

[0006] The antifreeze replenishment tank, located below the baffle plate, is used to store antifreeze to be replenished and to receive recycled media.

[0007] The recovery component, fixed to one end of the baffle, is used to filter leaked antifreeze and guide it to the recovery path.

[0008] A fixing plate, located on top of the guide plate, is used to fix the antifreeze reservoir to prevent it from shifting.

[0009] The protective groove, fixed to the bottom of the baffle plate, is used to store and protect the electrical components and connectors below.

[0010] Cable bundlers, fixed to the bottom of the baffle and located between the protective slots, are used to organize and secure the cables below to prevent them from becoming tangled.

[0011] The return pipe connects the recovery unit and the antifreeze replenishment tank, and is used to transport the antifreeze filtered by the recovery unit to the antifreeze replenishment tank.

[0012] The replenishment hose connects to one side of the antifreeze reservoir and the antifreeze replenishment box, and is used to replenish the antifreeze in the antifreeze replenishment box to the antifreeze reservoir.

[0013] The guide plate includes a central main plate and plate wings distributed at both ends of the central main plate. The surface of each plate wing is fixed with equally spaced pipe groove guards, and the edge of each plate wing is provided with a flow channel.

[0014] Furthermore, the central main board and the plate wings are an integral structure. The plate wings are distributed at both ends of the central main board at an inclination angle of 30°-45° and are in the shape of an "eight". The drainage groove is located at the lower end of the plate wing, and the protective groove and the cable tie are fixed to the top and bottom of the central main board, respectively.

[0015] Furthermore, the fixing plate is composed of two symmetrically distributed arc-shaped components. The bottom of the arc-shaped component is slidably connected to a corresponding groove on the surface of the central main board via a slider. The inner wall of the groove is provided with a return spring connected to the slider. The inner side of the arc-shaped component is attached to both ends of the antifreeze reservoir.

[0016] Furthermore, the protective groove includes a U-shaped component and a baffle. The U-shaped component is fixed to the bottom of the central main board, and the baffle is rotatably connected to one side of the U-shaped component via a damping hinge.

[0017] Furthermore, multiple cable bundlers are located between the protective grooves and are arranged at equal intervals. Each cable bundler includes two semi-circular components. One end of each semi-circular component is rotatably connected, and the other end is open and spaced apart from each other. One side of each semi-circular component is connected to the bottom of the central main board via a spring. The two semi-circular components form an openable and closable structure and form an elastic reset structure via the spring.

[0018] Furthermore, the recycling component includes a box and a cover plate. The bottom of the cover plate is tightly fitted to the top of the box and forms a sliding connection with the box. One side of the box is provided with a guide for connecting with the plate wings. Metal parts are fixed at both ends of the box corresponding to the guide. The surface of the cover plate is provided with magnetic sheets that are magnetically attracted to the metal parts at the corresponding positions. Each of the four corners of the inner wall of the box is provided with a snap-fit ​​seat. The snap-fit ​​seats are connected by adhesive strips. Each snap-fit ​​seat has a slot for inserting the filter plate.

[0019] Furthermore, the filter plate is a metal grid plate, and the box body is divided into upper and lower cavities by the filter plate. The lower cavity is trapezoidal in shape, wider at the top and narrower at the bottom, and has a drain port for connecting to one end of the return pipe. The other end of the return pipe is inclined at an angle of 15°-30° relative to the horizontal plane and is symmetrically distributed on both sides of the center point of the antifreeze replenishment box.

[0020] Furthermore, the drainage channels are inclined, and one end of the drainage channels passes through the through hole opened at the center of the guide member and extends to the top of the filter plate. The surface of the filter plate is provided with a perimeter to limit the flow range of the antifreeze, and the perimeter has a three-sided enclosing structure.

[0021] Furthermore, both of the plate wings have slots for installing pipes at the corresponding pipe groove guard edges, and the pipe groove guard edges are arranged in a surrounding manner around the outer ring of the slots.

[0022] Compared with the prior art, the beneficial effects of the present invention are as follows: 1. The present invention is equipped with a guide plate, which has the core effect of physical isolation. It can completely separate the upper antifreeze reservoir from the lower electrical components, effectively preventing direct contact between the antifreeze leaked due to accidents and the lower electronic components, thereby reducing the risk of short circuits from the source. In addition, the above structure also has a directional guiding effect. The inclined plate wings and drainage channels can use gravity to accurately guide the leaked antifreeze to the recovery component, avoiding medium retention or overflow.

[0023] 2. The present invention also includes a recycling component, which has the effect of efficient filtration and recycling. Its metal grid filter plate can intercept impurities to ensure the cleanliness of the medium. The trapezoidal lower cavity and inclined return pipe accelerate the liquid to converge and return to the supply tank. The magnetic cover plate takes into account both sealing and maintenance convenience, realizing the recycling of leaked medium.

[0024] 3. Simultaneously, the baffle plate, through its directional guidance function, ensures that all leaked antifreeze flows precisely into the recovery component, providing a stable source of media for its filtration and recovery. The purification and recovery of the media by the recovery component allows these media to be reused in the antifreeze reservoir through the replenishment system, avoiding media waste caused by leakage. At the same time, the physical isolation of the baffle plate provides a safety barrier for the circulation path of the recovered media. The two work together to enhance the safety of short-circuit protection and improve the resource recovery and utilization efficiency of the testing process.

[0025] The present invention will be explained in detail below with reference to the accompanying drawings and specific embodiments. Attached Figure Description

[0026] Figure 1 This is a schematic diagram of the main structure of the present invention; Figure 2 This is a schematic diagram of the bottom structure of the guide plate of the present invention; Figure 3 This is a schematic diagram of the top structure of the guide plate of the present invention; Figure 4 This is a schematic diagram of the internal structure of the recycling component of the present invention; Figure 5 For the present invention Figure 2 Enlarged schematic diagram of the structure at point A in the middle.

[0027] Numbering on the map: 1. Flow deflector; 101. Central main board; 102. Plate wing; 103. Pipe groove guard; 104. Drainage groove; 2. Antifreeze reservoir; 3. Antifreeze replenishment tank; 4. Recovery component; 401. Tank body; 402. Cover plate; 403. Guide component; 404. Snap-fit ​​seat; 405. Rubber strip; 406. Filter plate; 407. Metal parts; 5. Fixing plate; 6. Protective groove; 7. Cable bundler; 8. Return pipe; 9. Replenishment pipe. Detailed Implementation

[0028] To facilitate understanding of the present invention, a more comprehensive description of the present invention will be given below with reference to the accompanying drawings, which illustrate several embodiments of the present invention. However, the present invention can be implemented in different forms and is not limited to the embodiments described in the text. Rather, these embodiments are provided to make the disclosure of the present invention more thorough and complete.

[0029] It should be noted that when an element is referred to as being "fixed to" another element, it can be directly on the other element or there may be an intervening element. When an element is referred to as being "connected to" another element, it can be directly connected to the other element or there may be an intervening element. The terms "vertical," "horizontal," "left," "right," and similar expressions used in this document are for illustrative purposes only.

[0030] Please refer to the appendix carefully. Figure 1-5 A short-circuit isolation water supply device for a thermal management test bench includes a guide plate 1, and further includes: Antifreeze reservoir 2, located above baffle 1, is used to store antifreeze required for thermal management testing.

[0031] The antifreeze replenishment tank 3, located below the baffle plate 1, is used to store the antifreeze to be replenished and to receive the recovered medium.

[0032] The recovery component 4, fixed to one end of the guide plate 1, is used to filter the leaked antifreeze and guide it to the recovery path.

[0033] The fixing plate 5 is located on top of the guide plate 1 and is used to fix the antifreeze reservoir 2 to prevent it from shifting.

[0034] The protective groove 6 is fixed to the bottom of the guide plate 1 and is used to store and protect the electrical components and connectors below.

[0035] Cable bundler 7, fixed to the bottom of the guide plate 1 and located between the protective grooves 6, is used to organize and secure the cables below to prevent them from becoming tangled.

[0036] The return pipe 8 is connected between the recovery component 4 and the antifreeze replenishment tank 3, and is used to transport the antifreeze filtered by the recovery component 4 to the antifreeze replenishment tank 3.

[0037] The replenishment pipe 9 is connected to one side of the antifreeze reservoir 2 and the antifreeze replenishment tank 3, and is used to replenish the antifreeze in the antifreeze replenishment tank 3 to the antifreeze reservoir 2.

[0038] The guide plate 1 includes a central main plate 101 and plate wings 102 distributed at both ends of the central main plate 101. The surface of the plate wings 102 is fixed with pipe groove guards 103 that are evenly spaced, and the edges of the plate wings 102 are provided with flow channels 104.

[0039] In this embodiment, such as 1, Figure 2 and Figure 3 As shown, the central main board 101 and the plate wings 102 are an integral structure. The plate wings 102 are distributed at both ends of the central main board 101 at an angle of 30°-45° and are in the shape of an "eight". The drainage groove 104 is located at the lower end of the plate wings 102, and the protective groove 6 and the cable tie 7 are fixed to the top and bottom of the central main board 101, respectively.

[0040] Through the above structure, the integrated structure of the central main board 101 and the plate wing 102 improves the overall rigidity. The plate wing 102 is tilted in a 30°-45° "eight" shape, which can use gravity to efficiently guide the antifreeze that has leaked due to accident to converge to the drainage channel 104 at the lower end, ensuring that the liquid flows in a directional manner without stagnation.

[0041] In this embodiment, as Figure 1 and Figure 3 As shown, the fixing plate 5 consists of two symmetrically distributed arc-shaped components. The bottom of the arc-shaped component is slidably connected to the sliding groove corresponding to the surface of the central main plate 101 through a slider. The inner wall of the sliding groove is provided with a return spring connected to the slider. The inner side of the arc-shaped component is attached to both ends of the antifreeze reservoir 2.

[0042] With the above structure, the two symmetrical arc-shaped components of the fixing plate 5 are slidably connected to the slide groove through the slider, and with the elastic closing of the return spring, it can adapt to antifreeze reservoirs 2 with different diameters. It can achieve a tight fit through the spring force without manual adjustment, thus realizing the quick installation of antifreeze reservoir 2.

[0043] In this embodiment, as Figure 2 and Figure 5 As shown, the protective groove 6 includes a U-shaped component and a baffle. The U-shaped component is fixed to the bottom of the central main board 101, and the baffle is rotatably connected to one side of the U-shaped component through a damping hinge.

[0044] With the above structure, the baffle connected to the U-shaped part of the protective groove 6 and the damping hinge has both storage stability and operation convenience. The cavity of the U-shaped part can provide a stable bearing space for heavy electrical components such as high-voltage connectors. The baffle can be easily flipped up / down through the damping hinge to form an open operation port. When placing or taking out heavy components with cables, there is no need to force them in. Just put the component smoothly into the cavity of the U-shaped part from the opening. The baffle not only prevents the component from falling, but also simplifies the picking and placing process, and enhances the storage and protective isolation effect of heavy electrical components.

[0045] In this embodiment, as Figure 2 and Figure 5 As shown, multiple cable bundlers 7 are located between the protective grooves 6 and are arranged at equal intervals. Each cable bundler 7 includes two semi-circular parts. One end of each semi-circular part is rotatably connected, and the other end is open and spaced apart from each other. One side of each semi-circular part is connected to the bottom of the central main board 101 by a spring. The two semi-circular parts form an openable and closable structure and form an elastic reset structure by the spring.

[0046] Through the above structure, the cable bundler 7 disperses and fixes single strands or a small number of cables through the elastic opening and closing structure to avoid scattered wear, while the protective groove 6 concentrates heavy components, such as high-voltage connectors, in a closed space to bear the weight. The two work together to form a layered management system of dispersed binding + centralized protection, ensuring that the cables are arranged neatly under the guide plate 1.

[0047] In this embodiment, as Figure 4As shown, the recycling component 4 includes a box 401 and a cover plate 402. The bottom of the cover plate 402 is tightly fitted to the top of the box 401 and forms a sliding connection with the box 401. One side of the box 401 is provided with a guide 403 for connecting with the plate wing 102. Metal parts 407 are fixed at both ends of the box 401 corresponding to the guide 403. The surface of the cover plate 402 is provided with magnetic sheets that are magnetically attracted to the metal parts 407 at the corresponding positions. Each of the four corners of the inner wall of the box 401 is provided with a snap-fit ​​seat 404. The snap-fit ​​seats 404 are connected by adhesive strips 405. Each snap-fit ​​seat 404 has a slot for inserting the filter plate 406.

[0048] Through the above structure, the sliding connection between the cover plate 402 and the housing 401, combined with the magnetic adsorption of the metal part 407 and the magnetic sheet, not only ensures the sealing of the housing 401, preventing external dust and impurities from entering the housing 401 and contaminating the antifreeze to be filtered, thus ensuring the cleanliness of the filtered medium, but also facilitates quick opening and closing for maintenance of the filter plate 406. The magnetic adsorption between the cover plate 402 and the metal part 407 can achieve a tight fit between the cover plate 402 and the housing 401, effectively preventing accidental sliding of the sliding structure.

[0049] In this embodiment, as Figure 4 As shown, the filter plate 406 is a metal grid plate, and the box 401 is divided into upper and lower cavities by the filter plate 406. The lower cavity is trapezoidal in shape, wider at the top and narrower at the bottom, and has a drain port for connecting to one end of the return pipe 8. The other end of the return pipe 8 is inclined at an angle of 15°-30° relative to the horizontal plane and is symmetrically distributed on both sides of the center point of the antifreeze supply box 3.

[0050] Through the above structure, the filter plate 406 adopts a metal grid plate, which not only has good structural strength and corrosion resistance, but also can effectively intercept impurities in the leaked antifreeze, ensuring the cleanliness of the recovered medium. In the upper and lower chambers of the housing 401 separated by the filter plate 406, the trapezoidal design of the lower chamber, which is wider at the top and narrower at the bottom, can use gravity to accelerate liquid convergence, avoid residue and reduce impurity deposition. With the connection between the drain port and the return pipe 8, it is ensured that the filtered antifreeze flows quickly into the recovery path. The 15°-30° tilt angle between the return pipe 8 and the antifreeze supply tank 3 can improve the liquid flow efficiency by using the slope. From filtration to flow guidance to recovery, an efficient closed loop is formed, which not only strengthens the safety of short-circuit isolation, but also improves the effectiveness of recovery.

[0051] In this embodiment, as Figure 1 , Figure 3 and Figure 4 As shown, the drainage groove 104 is inclined, and one end of the drainage groove 104 passes through the through hole opened at the center of the guide member 403 and extends to the top of the filter plate 406. The surface of the filter plate 406 is provided with a rim to limit the flow range of the antifreeze, and the rim has a three-sided enclosed structure.

[0052] Through the above structure, the inclined distribution of the diversion channel 104 and the cooperation of the through hole of the guide 403 can guide the leaked antifreeze into the recovery component 4 by gravity, avoiding the medium from being stuck or overflowing during the transmission process. The three-sided enclosed edge of the filter plate 406 can precisely limit the flow range of the antifreeze, preventing the liquid from entering the lower cavity directly from the edge without filtration, improving filtration efficiency and recovery stability. Together with the guiding effect of the diversion channel 104, it not only ensures the thoroughness of the collection of leaked medium, but also ensures the cleanliness of the recovered medium through the filtration process, further laying the foundation for the device's short-circuit isolation and recovery functions.

[0053] In this embodiment, as Figure 1 , Figure 2 and Figure 3 As shown, both plate wings 102 have slots for installing pipes through them at the positions of the corresponding pipe groove guards 103, and the pipe groove guards 103 are enclosed and covered on the outer ring of the slots.

[0054] With the above structure, the enclosing structure of the pipe groove guard 103 can form a surrounding protection for the pipe passing through the groove opening. In the event of antifreeze leakage, it can prevent the leaking antifreeze flowing on the surface of the plate wing 102 from seeping into the lower part from the gap between the groove opening and the pipe, further strengthening the physical isolation effect of the guide plate 1, reducing the risk of liquid contacting the electrical components below the guide plate 1, and making the pipe layout more regular.

[0055] In another embodiment, a strain gauge load cell (model YZC-133) can be bonded to the mounting position at the bottom of the antifreeze reservoir 2 on the central main board 101. The sensor is tightly attached to the bottom of the antifreeze reservoir 2 to collect the reservoir weight signal in real time. A small PLC controller (model S7-200SMART) is fixed in the protective groove 6. The input end of the controller is connected to the load cell through a shielded wire, and the output end is connected to a solenoid valve through a relay module. A solenoid directional valve (model 2W-160-15) is connected in series in the middle section of the supply pipe 9. The solenoid valve is electrically connected to the PLC controller to control the on / off state of the supply pipe 9. During the test, the weighing sensor continuously collected the weight data of the antifreeze reservoir 2 and uploaded it to the PLC controller in real time. When the detected weight is lower than the preset threshold, the controller determines that "liquid level is insufficient" and immediately sends an opening signal to the solenoid valve. The solenoid valve opens, and the medium in the antifreeze supply tank 3 flows into the antifreeze reservoir 2 through the supply pipe 9 under the power of the diaphragm pump. When the weighing sensor detects that the weight of the antifreeze reservoir 2 has risen back to the initial threshold, the controller sends a shutdown signal, the solenoid valve is de-energized and reset, the supply pipe 9 is cut off, and the supply process ends.

[0056] By linking strain gauge load cells with PLC controllers and solenoid valves, fully automatic control of antifreeze replenishment is achieved without manual intervention. Threshold settings can be flexibly adapted to the media consumption rate of different test scenarios. Furthermore, an anomaly protection mechanism avoids safety risks caused by replenishment failures. In conjunction with the device's original short-circuit isolation function, the automation level and operational safety of the thermal management test bench are improved.

[0057] The specific operation process of the present invention is as follows: The bottom of the guide plate 1 is equipped with a bracket, which can be used to install the guide plate 1 at the highest point of the test bench. The fixing plate 5 is symmetrically distributed along the central axis of the central main plate 101, and its individual arc plate forms an elastic closing structure through springs, which can be used to temporarily fix the antifreeze reservoir 2, and adjust the opening and closing degree according to the diameter specification of the antifreeze reservoir 2, while also ensuring that the antifreeze reservoir 2 is in the center position on the surface of the central main plate 101.

[0058] To ensure the accuracy of thermal management testing, the relevant electrical components need to be the same as those in the actual vehicle. These components, including electrical parts such as the compressor that need to be connected to the antifreeze reservoir 2 via pipes, can be placed below the deflector plate 1. The deflector plate 1 can then physically isolate the antifreeze from the electrical components.

[0059] The outlet of the antifreeze reservoir 2 is connected to the compressor, radiator and other cooling components below the guide plate 1 through the through hole of the pipe groove guard 103 via a pipe, forming a closed circulation system. The supply pipe 9 is connected to the supply port of the antifreeze reservoir 2 via the antifreeze supply tank 3.

[0060] In thermal management test benches, high-voltage wiring harnesses for high-power electrical components such as compressors are typically equipped with heavy-duty waterproof connectors, metal shielding layers, and anti-loosening clips to ensure the safety and sealing performance of high-voltage transmission. The protective groove 6 can centrally store these components, preventing them from dangling or being exposed. This not only prevents these components from having poor contact due to their own weight, but also enhances safety by isolating them through the enclosed space. Furthermore, it can be combined with the cable bundler 7 to fix the cables of electrical components into bundles and store them uniformly, preventing the cables from drooping.

[0061] When the test is started, the antifreeze flows from the antifreeze reservoir 2 through the cooling components below the baffle plate 1, absorbs heat, and then returns to the antifreeze reservoir 2, forming a circulation. At this time, the baffle plate 1 acts as a physical barrier, completely isolating the antifreeze path above from the electrical components below. Since the antifreeze reservoir 2 is mostly made of engineering plastics, long-term contact with high-temperature antifreeze will cause material aging and cracks. At the same time, the connection between its side drain and the pipeline may also be poorly sealed due to long-term vibration and temperature changes, resulting in leakage or seepage. If leakage occurs in the antifreeze reservoir 2 during the test, the leaked antifreeze will flow into the drainage groove 104 along the surface of the inclined wing 102. The medium will flow along the inclined drainage groove 104 under the action of gravity and flow into the housing 401 through the axial through hole of the guide 403.

[0062] The antifreeze is filtered through filter plate 406, and the metal grid structure can intercept impurities. At the same time, the filtered liquid enters the lower chamber and finally flows into the antifreeze replenishment tank 3 through the drain port at the bottom of the lower chamber and the return pipe 8. This allows the accidentally leaked medium to mix with the original storage medium in the antifreeze replenishment tank 3. Compared with the traditional experimental monitoring process, this effectively avoids the problem of short circuit caused by the medium coming into contact with the electrical components below due to the inability of personnel to intercept the leak in time.

[0063] The filter plate 406 can be removed and cleaned by opening the cover plate 402.

[0064] After personnel repair or replace the antifreeze reservoir 2, the testing process can continue. During normal use, the medium in the thermal management system will evaporate due to high temperature, causing the medium inside the antifreeze reservoir 2 to gradually decrease. Personnel can open the valve of the antifreeze supply pipe 9. The diaphragm pump set between the antifreeze reservoir 2 and the antifreeze supply tank 3 can replenish the medium inside the antifreeze reservoir 2 through the antifreeze supply pipe 9.

[0065] The present invention has been described by way of example in conjunction with the accompanying drawings. Obviously, the specific implementation of the present invention is not limited to the above-described manner. Any non-substantial improvement made by adopting the inventive concept and technical solution of the present invention, or the direct application of the inventive concept and technical solution of the present invention to other occasions without modification, shall be within the protection scope of the present invention.

Claims

1. A short-circuit isolation water supply device for a thermal management test bench, comprising a guide plate (1). Its features are, Also includes: Antifreeze reservoir (2), located above the baffle plate (1), is used to store antifreeze required for thermal management testing; The antifreeze replenishment tank (3), located below the baffle plate (1), is used to store the antifreeze to be replenished and to receive the recovered medium; The recovery component (4) is fixed to one end of the guide plate (1) and is used to filter the leaked antifreeze and guide it to the recovery path; A fixing plate (5) is provided on top of the guide plate (1) to fix the antifreeze reservoir (2) to prevent it from shifting. The protective groove (6) is fixed to the bottom of the guide plate (1) and is used to store and protect the electrical components and connectors below; Cable bundler (7), fixed to the bottom of the guide plate (1) and located between the protective grooves (6), is used to organize and secure the cables below to prevent them from becoming tangled; The return pipe (8) is connected between the recovery component (4) and the antifreeze supply tank (3) and is used to transport the antifreeze filtered by the recovery component (4) to the antifreeze supply tank (3). The supply pipe (9) is connected to one side of the antifreeze reservoir (2) and the antifreeze supply tank (3) to supply antifreeze from the antifreeze supply tank (3) to the antifreeze reservoir (2). The guide plate (1) includes a central main plate (101) and plate wings (102) distributed at both ends of the central main plate (101). The surface of the plate wings (102) is fixed with pipe groove guards (103) distributed at equal intervals, and the edges of the plate wings (102) are provided with drainage grooves (104).

2. The short-circuit isolation and water replenishment device for a thermal management test bench according to claim 1, characterized in that: The central main board (101) and the plate wing (102) are an integral structure. The plate wing (102) is distributed at both ends of the central main board (101) at an angle of 30°-45° and is in the shape of an "eight". The drainage groove (104) is located at the lower end of the plate wing (102), and the protective groove (6) and the wire harness (7) are respectively fixed to the top and bottom of the central main board (101).

3. The short-circuit isolation and water replenishment device for a thermal management test bench according to claim 1, characterized in that: The fixing plate (5) consists of two symmetrically distributed arc-shaped components. The bottom of the arc-shaped component is slidably connected to the corresponding groove on the surface of the central main board (101) via a slider. The inner wall of the groove is provided with a reset spring connected to the slider. The inner side of the arc-shaped component is attached to both ends of the antifreeze reservoir (2).

4. The short-circuit isolation and water replenishment device for a thermal management test bench according to claim 1, characterized in that: The protective groove (6) includes a U-shaped component and a baffle. The U-shaped component is fixed to the bottom of the central main board (101), and the baffle is rotatably connected to one side of the U-shaped component through a damping hinge.

5. The short-circuit isolation and water replenishment device for a thermal management test bench according to claim 1, characterized in that: The cable bundle (7) is located between the protective grooves (6) and is arranged at equal intervals. The cable bundle (7) includes two semi-circular parts. One end of the two semi-circular parts is rotatably connected, and the other end is open and spaced apart from each other. One side of the two semi-circular parts is connected to the bottom of the central main board (101) by springs. The two semi-circular parts form an openable and closable structure and form an elastic reset structure by springs.

6. The short-circuit isolation and water replenishment device for a thermal management test bench according to claim 1, characterized in that: The recycling component (4) includes a box (401) and a cover plate (402). The bottom of the cover plate (402) is tightly attached to the top of the box (401) and forms a sliding connection with the box (401). One side of the box (401) is provided with a guide (403) for connecting with the plate wing (102). Metal parts (407) are fixed at both ends of the box (401) corresponding to the guide (403). The surface of the cover plate (402) is provided with magnetic sheets that are magnetically attracted to the metal parts (407) at the corresponding positions. Each of the four corners of the inner wall of the box (401) is provided with a snap-fit ​​seat (404). The snap-fit ​​seats (404) are connected by adhesive strips (405). Each snap-fit ​​seat (404) has a slot for inserting the filter plate (406).

7. A short-circuit isolation and water replenishment device for a thermal management test bench according to claim 6, characterized in that: The filter plate (406) is a metal grid plate, and the box (401) is divided into upper and lower cavities by the filter plate (406). The lower cavity is trapezoidal in shape with a wider top and a narrower bottom, and has a drain port for connecting to one end of the return pipe (8). The other end of the return pipe (8) is inclined at an angle of 15°-30° relative to the horizontal plane and is symmetrically distributed on both sides of the center point of the antifreeze replenishment box (3).

8. The short-circuit isolation and water replenishment device for a thermal management test bench according to claim 1, characterized in that: The drainage groove (104) is inclined, and one end of the drainage groove (104) passes through the through hole opened at the center of the guide (403) and extends to the top of the filter plate (406). The surface of the filter plate (406) is provided with a rim to limit the flow range of the antifreeze, and the rim has a three-sided enclosure structure.

9. A short-circuit isolation and water replenishment device for a thermal management test bench according to claim 1, characterized in that: Both of the plate wings (102) have slots for installing pipes through the corresponding pipe groove guard (103) positions. The pipe groove guard (103) is enclosed and covers the outer ring of the slot.

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