Thermal management air conditioning unit detection device

Abstract

The utility model discloses a thermal management air conditioning unit detection device. Comprising a detection table body, a thermal management air conditioning unit is placed on one side of the detection table body, and the detection table body comprises a cooling liquid water tank, a heater, a first water pump, a filter and a plurality of ball valves; the cooling liquid water tank, the first ball valve, the filter, the first water pump, the second ball valve, the heat management air conditioning unit, the third ball valve and the heater are sequentially connected, and the heater is connected with the cooling liquid water tank to form a closed cooling liquid circulation loop; a cooling liquid recovery device is arranged between the detection platform main body and the thermal management air conditioning unit, the cooling liquid recovery device comprises a recoverer and a second water pump, and a water outlet of the recoverer is connected with a water inlet end of the second water pump; the water outlet end of the second water pump is connected with the cooling liquid water tank and used for pumping back cooling liquid. According to the utility model, multiple detection functions are integrated, and the cooling liquid circulation loop and the cooling liquid recovery device are arranged, so that the cooling liquid after the test can be reused.

Description

Technical Field

[0001] The utility model belongs to the technical field of battery thermal management, and particularly relates to a detection device for a thermal management air-conditioning unit. Background Art

[0002] A battery thermal management air-conditioning unit is a device specifically used for managing the heat of batteries, mainly aiming at managing the heat generated during the use of batteries, so as to ensure the safety, life and performance of the batteries. In the prior art, for example, a Chinese patent with the publication number CN213845361U discloses a top-mounted battery thermal management unit, which includes a battery pack and a battery thermal management unit. The battery thermal management unit includes a base and a cover body; an electrical chamber, a condensation chamber, a first chamber and a second chamber are provided on the base; a condenser is provided in the condensation chamber, and a compressor, a heat exchanger, an expansion valve, an electrical box and a main controller are provided in the electrical chamber; the compressor, the condenser, the expansion valve and the heat exchanger are sequentially connected in a loop through pipelines to form a first medium loop; an electric heater and a water pump provided in the vehicle are also included, and the heat exchanger, the battery pack, the electric heater and the water pump are sequentially connected in a loop through pipelines to form a second medium loop; heat exchange is performed between the first medium loop and the second medium loop through the heat exchanger. The above prior art adjusts the temperature of the battery pack and controls the reduction of the temperature difference of the battery pack, so as to maintain the battery working temperature within a suitable range and ensure the reliability and safety of the battery.

[0003] In modern industrial production, as a key device, the battery thermal management air-conditioning unit is widely used in many fields such as electric vehicles, energy storage systems, and industrial automation. The stability and reliability of its performance directly affect the operation efficiency and safety of the overall system. Therefore, a comprehensive functional test of the battery thermal management air-conditioning unit to ensure that its various performance indicators meet the design requirements is an indispensable important link before the product leaves the factory.

[0004] However, the traditional testing methods for battery thermal management air-conditioning units often have problems such as high dispersion, complex operation, and low efficiency. During the testing process, it is necessary to separately detect the functions of devices such as water pumps and heaters, and different devices or instruments need to be operated to detect the status of each parameter, resulting in a long testing preparation time and very low detection efficiency. In addition, the frequent movement and adjustment of the testing equipment not only increase the labor intensity, but also may cause unnecessary wear to the equipment, affecting the accuracy and reliability of the test.

[0005] Therefore, there is an urgent need for a detection device for a thermal management air-conditioning unit that can detect various functions, is convenient to operate, and has high detection efficiency to solve the above problems. Summary of the Invention

[0006] In view of the problems in the related art, the present utility model proposes a detection device for a thermal management air conditioning unit to overcome the above-mentioned technical problems existing in the existing related art. The main body of the detection bench centrally arranges key components such as a coolant water tank, a computer, a low-voltage regulated power supply, a high-voltage regulated power supply, a first water pump, and a heater on the workbench. This integrated layout not only saves space but also makes the entire system structure compact and fully functional. The present utility model also has a coolant circulation loop and the coolant recovery device. The coolant recovery device collects the coolant in the unit after testing and pumps it back to the coolant water tank for reuse, saving resources, reducing labor intensity, and improving efficiency.

[0007] The technical solution of the present utility model is realized as follows: A detection device for a thermal management air conditioning unit includes a main body of the detection bench, and a thermal management air conditioning unit is placed on one side of the main body of the detection bench.

[0008] The main body of the detection bench includes a coolant water tank, a heater, a first water pump, a filter, and a plurality of ball valves; the coolant water tank, the first ball valve, the filter, the first water pump, the second ball valve, the thermal management air conditioning unit, the third ball valve, and the heater are connected in sequence, and the heater is connected to the coolant water tank to form a closed-loop coolant circulation loop;

[0009] Further, during detection, it is required to add more than 20L of qualified coolant into the coolant water tank; a liquid level mark is provided in the coolant water tank, and the user regularly checks whether the liquid level of the coolant meets the detection requirements; when the detection device for the thermal management air conditioning unit is not used for a long time, the coolant in the coolant water tank is drained and stored in a sealed container to prevent the coolant from absorbing too much moisture in the air;

[0010] A dust-proof cover is also provided on the outer surface of the coolant water tank;

[0011] A coolant recovery device is arranged between the main body of the detection bench and the thermal management air conditioning unit. The coolant recovery device includes a recovery device and a second water pump. The water outlet of the recovery device is connected to the water inlet end of the second water pump; the water outlet end of the second water pump is connected to the coolant water tank for pumping back the coolant.

[0012] The coolant recovery device is used to collect the coolant in the unit water pipe after testing and pump it back to the coolant water tank by using the second water pump;

[0013] The thermal management air conditioning unit is provided with a waterway interface assembly extending downward, and the waterway interface assembly is connected to the coolant circulation loop through a water pipe; the recovery device has a recovery port extending upward, and the recovery port is arranged directly below the waterway interface assembly, and the recovery device is used to receive the coolant flowing out of the waterway interface assembly;

[0014] In the present utility model, the first water pump is mainly used to provide power for the coolant, so that the coolant can circulate in the coolant circulation loop; the heater is mainly used to heat the coolant so that the temperature of the coolant meets the requirements of the thermal management air-conditioning unit system environment; the coolant water tank is mainly used to simulate the expansion water tank of the thermal management air-conditioning unit to store the coolant and supplement the coolant for the water cooling system of the thermal management air-conditioning unit.

[0015] The test bench main body further includes a computer, a low-voltage regulated power supply, and a high-voltage regulated power supply; the thermal management air-conditioning unit includes a high-voltage power supply interface and a low-voltage power supply interface, the low-voltage regulated power supply is electrically connected to the low-voltage power supply interface, and the high-voltage regulated power supply is electrically connected to the high-voltage power supply interface; the thermal management air-conditioning unit is provided with a unit controller, and the computer is connected to the unit controller;

[0016] The computer is used to simulate the vehicle to send instructions to the unit controller to check whether the thermal management air-conditioning unit can respond according to the instructions.

[0017] Further, the first water pump includes a drainage end and a water inlet end. The water inlet end of the first water pump is connected to the filter, the first ball valve, and the coolant water tank in sequence through a water pipe, and the drainage end of the first water pump is connected to the second ball valve and the thermal management air-conditioning unit in sequence through a water pipe.

[0018] Further, the heater includes an output end and an input end. The input end is connected to the third ball valve and the thermal management air-conditioning unit in sequence through a water pipe, and the output end is connected to the coolant water tank through a water pipe.

[0019] Further, the low-voltage regulated power supply is connected to the commercial power, and the low-voltage regulated power supply is used to convert the input commercial power into low-voltage direct current for output; the high-voltage regulated power supply is connected to the commercial power, and the high-voltage regulated power supply is used to convert the input commercial power into high-voltage direct current for output;

[0020] The thermal management air-conditioning unit further includes a compressor and a fan. The high-voltage regulated power supply is used to provide power for the compressor; the low-voltage regulated power supply is used to provide power for the first water pump, the second water pump, the heater, and the fan;

[0021] It should be noted that in the present utility model, the power of the low-voltage regulated power supply is 2KW, and the voltage is adjustable from 0 to 36V; the power of the high-voltage regulated power supply is 20KW, and the voltage is adjustable from 0 to 1000V.

[0022] Furthermore, the main body of the detection table further includes an operation panel, and the operation panel includes a high-voltage power-on indicator light, a high-voltage power-off indicator light, a low-voltage power-on indicator light, a low-voltage power-off indicator light, a high-voltage power-on button, a high-voltage power-off button, a low-voltage power-on button, a low-voltage power-off button, and an emergency stop switch button;

[0023] It further includes a strong electrical circuit; in the strong electrical circuit, the emergency stop switch button is connected in series with the high-voltage power-on button and the high-voltage power-off button in sequence; the low-voltage power-on button and the low-voltage power-off button are connected in series, and the low-voltage power-on button and the low-voltage power-off button are connected in parallel at both ends of the high-voltage power-on button and the high-voltage power-off button; the high-voltage power-on indicator light is connected in parallel at both ends of the high-voltage power-on button, the high-voltage power-off indicator light is connected in parallel at both ends of the high-voltage power-off button; the low-voltage power-on indicator light is connected in parallel at both ends of the low-voltage power-on button, and the low-voltage power-off indicator light is connected in parallel at both ends of the low-voltage power-off button;

[0024] Furthermore, when detecting the function of the heater, first press the low-voltage power-on button, the low-voltage power-on indicator light is on, the low-voltage regulated power supply starts to work, and the voltage of the low-voltage regulated power supply is preferably adjusted to 27V; then press the high-voltage power-on button, the high-voltage power-on indicator light is on, the high-voltage regulated power supply starts to work, and the voltage of the high-voltage regulated power supply is preferably adjusted to 600V; the user can adjust the voltage of each power supply according to the requirements of the actual detection technology.

[0025] Furthermore, a QF1 main power switch and a plurality of electrical sockets are provided at the rear side of the main body of the detection table, and the QF1 main power switch is connected to the three-phase live wire, the neutral wire N and the ground wire G through a plurality of wiring terminals respectively; among them, the three-phase live wire includes the live wire L1, the live wire L2 and the live wire L3;

[0026] The live wire L1 is electrically connected to the first fuse and the emergency stop switch button in sequence; the live wire L1, the live wire L2, the live wire L3 and the ground wire G are simultaneously electrically connected to the high-voltage regulated power supply; the live wire L3, the neutral wire N and the ground wire G are simultaneously electrically connected to the low-voltage regulated power supply; each of the electrical sockets is electrically connected to the low-voltage regulated power supply;

[0027] It should be noted that a switch box is provided at the rear side of the main body of the detection table, and a grounding point is provided inside the switch box; the QF1 main power switch is a three-phase four-wire air switch equipped with a leakage protection function;

[0028] Or the QF1 main power switch is a circuit breaker, and the rated current of the circuit breaker is greater than 32A;

[0029] Furthermore, three of the electrical sockets are provided at the rear side of the main body of the detection table, and two of the electrical sockets are provided at the front side of the main body of the detection table.

[0030] Further, the operation panel further includes a heater on indicator light, a heater controller, a heater button, a water pump on indicator light, and a manual water pump button;

[0031] It further includes a low-voltage electrical circuit; in the low-voltage electrical circuit, the positive and negative poles of the low-voltage regulated power supply are electrically connected to the positive and negative poles of the heater respectively, the positive and negative poles of the first water pump are connected in parallel with the heater, the positive pole of the low-voltage regulated power supply is also electrically connected to one end of the heater button through a second fuse in sequence, the other end of the heater button is connected to the heater controller, the CAN pins of the heater controller are respectively connected to the second pin and the third pin of the heater, and the heater on indicator light is connected in parallel at both ends of the heater controller; the water pump on indicator light is in series with the manual water pump button and is connected in parallel at both ends of the heater button and the heater on indicator light.

[0032] Further, the heat management air-conditioning unit is placed on a mobile rack, and a plurality of moving pulleys are provided at the bottoms of the mobile rack and the main body of the testing table; further, the main body of the testing table includes a first electrical cabinet, a second electrical cabinet, and a third electrical cabinet arranged in parallel; the high-voltage regulated power supply is placed in the first electrical cabinet, and the first water pump and the heater are placed in the third electrical cabinet; the main body of the testing table further includes a tabletop, and the computer, the coolant water tank, and the low-voltage regulated power supply are all arranged on the tabletop.

[0033] Further, the waterway interface assembly includes at least a water inlet interface and a water outlet interface, the water inlet interface is connected to a second ball valve through a water pipe, and the water outlet interface is connected to a third ball valve through a water pipe.

[0034] Further, the heater is a PTC heater.

[0035] Advantages of the present utility model:

[0036] (1) By constructing a closed-loop coolant circulation circuit (including a coolant water tank, a heater, a first water pump, a filter, and multiple ball valves), the present utility model realizes the recycling of the coolant, effectively reduces the consumption and waste of the coolant, and at the same time improves the heat exchange efficiency of the heat management air-conditioning unit testing device. The use of the closed-loop coolant circulation system reduces the discharge and replacement frequency of the coolant, helps to reduce environmental pollution and resource consumption. At the same time, efficient heat exchange and energy utilization also reduce energy waste, meeting the requirements of modern industry for energy conservation, emission reduction, and sustainable development.

[0037] (2) By setting a coolant recovery device to collect the coolant in the unit water pipe after testing and then using a second water pump to pump it back to the coolant water tank, the present utility model further realizes the recycling of the coolant, thereby achieving the effects of saving resources, reducing labor intensity, and improving efficiency.

[0038] (3) The utility model manufactures faults by simulating the fault occurrence mechanism to check whether the thermal management air-conditioning unit can be reliably protected. According to the quality inspection standard, a thermal management air-conditioning unit that can respond correctly can be determined as a qualified product, while a thermal management air-conditioning unit that cannot respond and protect correctly is determined as a pending product, and it is timely returned to the previous production process for inspection or repair, so as to ensure that the product can finally leave the factory qualified.

[0039] (4) In the utility model, the detection bench main body centrally arranges key components such as a coolant water tank, a computer, a low-voltage regulated power supply, a high-voltage regulated power supply, a first water pump, and a heater on the workbench. This integrated layout not only saves space but also makes the entire system compact in structure and complete in function. This design facilitates the installation, debugging, and maintenance of the equipment, and improves the overall work efficiency. Brief Description of the Drawings

[0040] Figure 1 is a schematic structural diagram of a detection device for a thermal management air-conditioning unit of the utility model;

[0041] Figure 2 is Figure 1 an enlarged view of part A of

[0042] Figure 3 is a sectional view of a detection device for a thermal management air-conditioning unit of the utility model;

[0043] Figure 4 is a schematic structural diagram of a coolant recovery device of the utility model;

[0044] Figure 5 is a schematic structural diagram of the detection bench main body with some components removed of the utility model;

[0045] Figure 6 is a schematic structural diagram of the strong electrical circuit of the utility model;

[0046] Figure 7 is a schematic structural diagram of the weak electrical circuit of the utility model;

[0047] Figure 8 is a schematic structural diagram of the coolant circulation loop of the utility model;

[0048] Figure 9 is a schematic diagram of the detection working principle of the thermal management air-conditioning unit of the utility model.

[0049] Marking Explanation:

[0050] 1. Detection table main body; 11. Electrical socket; 12. Computer; 13. Coolant water tank; 14. Heater; 15. First water pump; 2. Coolant circulation circuit; 3. Low-voltage regulated power supply; 4. High-voltage regulated power supply; 5. Operation panel; 51. High-voltage power on indicator light; 511. High-voltage power off indicator light; 52. Low-voltage power on indicator light; 521. Low-voltage power off indicator light; 53. High-voltage power on button; 531. High-voltage power off button; 54. Low-voltage power on button; 541. Low-voltage power off button; 55. Emergency stop switch button; 56. Heater on indicator light; 561. Heater controller; 562. Heater button; 57. Water pump on indicator light; 571. Manual water pump button; 6. Thermal management air-conditioning unit; 61. Waterway interface assembly; 7. Mobile rack; 8. Coolant recovery device; 81. Recovery device; 82. Second water pump. Detailed implementation manners

[0051] 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 making creative efforts shall fall within the protection scope of the present invention.

[0052] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", etc. indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation of the present invention.

[0053] As Figure 1 shown, this embodiment provides a detection device for a thermal management air-conditioning unit, including a detection table main body 1, and a thermal management air-conditioning unit 6 is placed on one side of the detection table main body 1.

[0054] As Figure 5 and Figure 8 shown, the detection table main body 1 includes a coolant water tank 13, a heater 14, a first water pump 15, a filter and a plurality of ball valves; the coolant water tank 13, the first ball valve, the filter, the first water pump 15, the second ball valve, the thermal management air-conditioning unit 6, the third ball valve and the heater 14 are connected in sequence, and the heater 14 is connected to the coolant water tank 13 to form a closed-loop coolant circulation circuit 2.

[0055] In this embodiment, by constructing a closed-loop coolant circulation circuit 2 (including a coolant water tank 13, a heater 14, a first water pump 15, a filter, and multiple ball valves), the recycling of coolant is realized, effectively reducing the consumption and waste of coolant, and at the same time improving the heat exchange efficiency of the detection device of the thermal management air-conditioning unit 6. The use of the closed-loop coolant circulation system reduces the discharge and replacement frequency of coolant, helps to reduce environmental pollution and resource consumption. At the same time, efficient heat exchange and energy utilization also reduce energy waste, meeting the requirements of modern industry for energy conservation, emission reduction, and sustainable development.

[0056] Specifically, during detection, it is required to add more than 20 L of qualified coolant into the coolant water tank 13; a liquid level mark is provided in the coolant water tank 13, and the user regularly checks whether the liquid level of the coolant meets the detection requirements; when the detection device of the thermal management air-conditioning unit 6 is not used for a long time, the coolant in the coolant water tank 13 needs to be drained and stored in a sealed container to prevent the coolant from absorbing too much moisture in the air;

[0057] A dust cover is also provided on the outer surface of the coolant water tank 13. When it is not necessary to observe the flow of the coolant inside the coolant water tank 13, the dust cover on the coolant water tank 13 should be covered to prevent dust from entering and absorbing too much moisture in the air;

[0058] As Figure 3-4 shown, a coolant recovery device 8 is provided between the detection table main body 1 and the thermal management air-conditioning unit 6. The coolant recovery device 8 includes a recovery device 81 and a second water pump 82. The water outlet of the recovery device 81 is connected to the water inlet end of the second water pump 82; the water outlet end of the second water pump 82 is connected to the coolant water tank 13 for pumping back the coolant;

[0059] The coolant recovery device 8 is used to collect the coolant in the unit water pipe after testing, and use the second water pump 82 to pump it back to the coolant water tank 13 to recycle the coolant, thereby achieving the effects of saving resources, reducing labor intensity, and improving efficiency;

[0060] The thermal management air-conditioning unit 6 is provided with a waterway interface component 61 extending downward. The waterway interface component 61 is connected to the coolant circulation circuit 2 through a water pipe; the recovery device 81 has a recovery port extending upward, and the recovery port is arranged directly below the waterway interface component 61. The recovery device 81 is used to receive the coolant flowing out of the waterway interface component 61;

[0061] In this embodiment, the first water pump 15 is mainly used to provide power for the coolant, so that the coolant can circulate in the coolant circulation loop 2; the heater 14 is mainly used to heat the coolant, so that the temperature of the coolant meets the requirements of the system environment of the thermal management air-conditioning unit 6 and satisfies the test requirements of the thermal management air-conditioning unit 6 under different working conditions. The coolant water tank 13 is mainly used to simulate the expansion water tank of the thermal management air-conditioning unit 6 to store the coolant and supplement the coolant for the water cooling system of the thermal management air-conditioning unit 6.

[0062] As Figure 1 shown, the test bench main body 1 further includes a computer 12, a low-voltage regulated power supply 3 and a high-voltage regulated power supply 4; the thermal management air-conditioning unit 6 includes a high-voltage power supply interface and a low-voltage power supply interface, the low-voltage regulated power supply 3 is electrically connected to the low-voltage power supply interface, and the high-voltage regulated power supply 4 is electrically connected to the high-voltage power supply interface; the thermal management air-conditioning unit 6 is provided with a unit controller, and the computer 12 is connected to the unit controller;

[0063] In this embodiment, the interfaces of the high- and low-voltage regulated power supplies 3 of the detection device of the thermal management air-conditioning unit 6 are directly plugged and quickly connected to the high- and low-voltage power supply interfaces of the thermal management air-conditioning unit 6, and the operation is safe, fast and convenient;

[0064] The computer 12 is used to simulate the vehicle to send instructions to the unit controller to check whether the thermal management air-conditioning unit 6 can respond according to the instructions; in this embodiment, faults are manufactured by simulating the fault occurrence mechanism to check whether the thermal management air-conditioning unit 6 can be reliably protected. According to the quality inspection standard, the thermal management air-conditioning unit 6 that can respond correctly can be determined as a qualified product, and the thermal management air-conditioning unit 6 that cannot respond and protect correctly is determined as a pending product and returned to the previous production process in time for inspection or repair, so as to ensure that the product can finally leave the factory qualified.

[0065] In this embodiment, the test bench main body 1 centrally arranges key components such as the coolant water tank 13, the computer 12, the low-voltage regulated power supply 3, the high-voltage regulated power supply 4, the first water pump 15, and the heater 14 on the workbench. This integrated layout not only saves space, but also makes the whole system structure compact and fully functional. This design is convenient for the installation, commissioning and maintenance of the equipment, and improves the overall work efficiency.

[0066] Specifically, the first water pump 15 includes a drainage end and a water inlet end. The water inlet end of the first water pump 15 is connected to the filter, the first ball valve, and the coolant water tank 13 in sequence through a water pipe, and the drainage end of the first water pump 15 is connected to the second ball valve and the thermal management air-conditioning unit 6 in sequence through a water pipe.

[0067] Specifically, the heater 14 includes an output end and an input end. The input end is sequentially connected to the third ball valve and the thermal management air-conditioning unit 6 through a water pipe, and the output end is connected to the coolant water tank 13 through a water pipe.

[0068] Specifically, the low-voltage regulated power supply 3 is connected to the commercial power. The low-voltage regulated power supply 3 is used to convert the input commercial power into low-voltage direct current for output; the high-voltage regulated power supply 4 is connected to the commercial power. The high-voltage regulated power supply 4 is used to convert the input commercial power into high-voltage direct current for output;

[0069] The thermal management air-conditioning unit 6 further includes a compressor and a blower. The high-voltage regulated power supply 4 is used to supply power to the compressor; the low-voltage regulated power supply 3 is used to supply power to the first water pump 15, the second water pump 82, the heater 14 and the blower;

[0070] It should be noted that in this embodiment, the power of the low-voltage regulated power supply 3 is 2KW, and the voltage is adjustable from 0 to 36V; the power of the high-voltage regulated power supply 4 is 20KW, and the voltage is adjustable from 0 to 1000V.

[0071] As Figure 2 shown, the test bench main body 1 further includes an operation panel 5. The operation panel 5 includes a high-voltage on indicator light 51, a high-voltage off indicator light 511, a low-voltage on indicator light 52, a low-voltage off indicator light 521, a high-voltage on button 53, a high-voltage off button 531, a low-voltage on button 54, a low-voltage off button 541 and an emergency stop switch button 55;

[0072] As Figure 6 shown, it further includes a strong electrical circuit; in the strong electrical circuit, the emergency stop switch button 55 is sequentially connected in series with the high-voltage on button 53 and the high-voltage off button 531; the low-voltage on button 54 is connected in series with the low-voltage off button 541, and the low-voltage on button 54 and the low-voltage off button 541 are connected in parallel at both ends of the high-voltage on button 53 and the high-voltage off button 531; the high-voltage on indicator light 51 is connected in parallel at both ends of the high-voltage on button 53, and the high-voltage off indicator light 511 is connected in parallel at both ends of the high-voltage off button 531; the low-voltage on indicator light 52 is connected in parallel at both ends of the low-voltage on button 54, and the low-voltage off indicator light 521 is connected in parallel at both ends of the low-voltage off button 541;

[0073] More specifically, when detecting the function of the heater 14, first press the low-voltage power-on button 54, and the low-voltage power-on indicator light 52 lights up. The low-voltage regulated power supply 3 starts to work, and the voltage display of the low-voltage regulated power supply 3 is preferably adjusted to 27V. Then press the high-voltage power-on button 53, and the high-voltage power-on indicator light 51 lights up. The high-voltage regulated power supply 4 starts to work, and the voltage display of the high-voltage regulated power supply 4 is preferably adjusted to 600V. The user can adjust the voltage of each power supply according to the requirements of the actual detection technology.

[0074] In this embodiment, the start and stop operations of multiple devices to be tested are all concentrated on the operation panel 5. The tester can complete all operations without frequent movement, greatly simplifying the operation process and improving the convenience and efficiency of the operation. At the same time, the design of centralized observation enables the tester to master the system operation status in real time, discover and solve problems in a timely manner, enhancing the intuitiveness and reliability of the test.

[0075] Specifically, a QF1 main power switch and a plurality of electrical sockets 11 are provided at the rear side of the detection table main body 1. The QF1 main power switch is connected to the three-phase live wire, the neutral wire N, and the ground wire G through a plurality of terminals respectively; among them, the three-phase live wire includes the live wire L1, the live wire L2, and the live wire L3.

[0076] The live wire L1 is sequentially electrically connected to the first fuse and the emergency stop switch button 55; the live wire L1, the live wire L2, the live wire L3, and the ground wire G are simultaneously electrically connected to the high-voltage regulated power supply 4; the live wire L3, the neutral wire N, and the ground wire G are simultaneously electrically connected to the low-voltage regulated power supply 3; each of the electrical sockets 11 is electrically connected to the low-voltage regulated power supply 3.

[0077] It should be noted that a switch box is provided at the rear side of the detection table main body 1, and a grounding point is provided inside the switch box; the QF1 main power switch is a three-phase four-wire air switch equipped with a leakage protection function.

[0078] Or the QF1 main power switch is a circuit breaker, and the rated current of the circuit breaker is greater than 32A.

[0079] Specifically, three of the electrical sockets 11 are provided at the rear side of the detection table main body 1, and two of the electrical sockets 11 are provided at the front side of the detection table main body 1.

[0080] As Figure 2 shown, the operation panel 5 further includes a heater on indicator light 56, a heater controller 561, a heater button 562, a water pump on indicator light 57, and a manual water pump button 571.

[0081] In this embodiment, through the lighting and extinguishing conditions of each indicator light on the operation panel 5, it can be directly seen whether each device is powered on. The high-voltage and low-voltage button switches respectively control the high-voltage and low-voltage regulated power supplies 3; in case of an emergency, pressing the emergency stop button switch can disconnect the high-voltage and low-voltage regulated power supplies 3 to ensure the safety of the entire detection device of the thermal management air-conditioning unit 6; pressing the heater button 562 switch, the indicator light is on and the heater 14 works. Pressing the manual water pump button 571 switch, the indicator light is on and the first water pump works. The operation panel 5 centralizes the control operation buttons, and such a design enables users to operate the detection device of the thermal management air-conditioning unit 6 more intuitively, conveniently and efficiently, thereby improving the detection efficiency of the detection device of the thermal management air-conditioning unit 6;

[0082] As Figure 7 shown, it further includes a weak-current electrical circuit; in the weak-current electrical circuit, the positive and negative electrodes of the low-voltage regulated power supply 3 are respectively electrically connected to the positive and negative electrodes of the heater 14, the positive and negative electrodes of the first water pump 15 are connected in parallel with the heater 14, the positive electrode of the low-voltage regulated power supply 3 is also electrically connected to one end of the heater button 562 in sequence through a second fuse, the other end of the heater button 562 is connected to the heater controller 561, the CAN pins of the heater controller 561 are respectively connected to the second pin and the third pin of the heater 14, and the heater on indicator light 56 is connected in parallel at both ends of the heater controller 561; the water pump on indicator light 57 is connected in series with the manual water pump button 571 and is connected in parallel at both ends of the heater button 562 and the heater on indicator light 56.

[0083] Specifically, the thermal management air-conditioning unit 6 is placed on a mobile rack 7, and multiple mobile pulleys are provided at the bottoms of the mobile rack 7 and the detection table main body 1;

[0084] More specifically, each mobile pulley is provided with a caster lock; when the caster lock is tightened, the position of the mobile rack 7 / detection table main body 1 can be fixed; when the caster lock is released, the mobile rack 7 / detection table main body 1 can be easily moved;

[0085] The design of the mobile rack 7, mobile pulleys and caster locks enables the thermal management air-conditioning unit 6 to be conveniently moved and fixed, and users can move the thermal management air-conditioning unit 6 to a suitable area for placement and fixation according to production needs.

[0086] Specifically, the detection table main body 1 includes a first electrical cabinet, a second electrical cabinet and a third electrical cabinet arranged in parallel; the high-voltage regulated power supply 4 is placed in the first electrical cabinet, and the first water pump 15 and the heater 14 are placed in the third electrical cabinet; the detection table main body 1 further includes a tabletop, and the computer 12, the coolant water tank 13 and the low-voltage regulated power supply 3 are all arranged on the tabletop.

[0087] Specifically, the waterway interface assembly 61 includes at least a water inlet interface and a water outlet interface. The water inlet interface is connected to a second ball valve through a water pipe, and the water outlet interface is connected to a third ball valve through a water pipe.

[0088] Specifically, the heater 14 is a PTC heater.

[0089] As Figure 9 shown, the detection process of a thermal management air conditioner unit detection device according to this embodiment is as follows:

[0090] First, connect the waterway and circuit of the thermal management air conditioner unit 6 and the detection device of the thermal management air conditioner unit 6. Close the main power switch QF1, release the emergency stop switch button 55, press the low-voltage power-on button 54, the low-voltage power-on indicator light 52 lights up, and the low-voltage regulated power supply 3 starts to work; then press the high-voltage power-on button 53, the high-voltage power-on indicator light 51 lights up, and the high-voltage regulated power supply 4 starts to work. Connect the thermal management air conditioner unit 6 and the computer 12 for communication and open the test software to input commands to control the first water pump 15 for self-circulation detection. During refrigeration operation, the fan and compressor start and stop, and message feedback is carried out to detect whether the unit is working properly, so as to check the functions of the unit. Press the high-voltage power-off button 531, the high-voltage power-off indicator light 511 lights up, and the high-voltage regulated power supply 4 stops working. Then unplug the water pipe connected to the waterway interface assembly 61 of the thermal management air conditioner unit 6, so that the coolant in the waterway interface assembly 61 flows into the recovery device 81 (part of the coolant can be manually assisted to be poured into the recovery device 81). Start the second water pump 82 to pump the coolant back into the coolant water tank 13. Press the low-voltage power-off button 541, the low-voltage power-off indicator light 521 lights up, and the low-voltage regulated power supply 3 stops working, thus completing the detection of the thermal management air conditioner unit 6.

[0091] When testing a thermal management air conditioner unit 6, the coolant temperature is too low to meet the starting temperature of the unit. At this time, press the manual water pump button 571 on the control panel, the water pump indicator light lights up, so that the coolant circulates in the coolant circulation loop 2. Then press the heater button 562 on the control panel, the heater 14 indicator light lights up, and heat the coolant to make the coolant temperature meet the requirements of the unit system environment. Then detect the unit according to the unit function detection process.

[0092] According to the disclosure and teachings of the above specification, those skilled in the art to which the present invention pertains can also make changes and modifications to the above embodiments. Therefore, the present invention is not limited to the specific embodiments disclosed and described above, and some modifications and changes to the present invention should also fall within the protection scope of the claims of the present invention. In addition, although some specific terms are used in this specification, these terms are only for convenience of description and do not constitute any limitation to the present invention.

Claims

1. A detection device for a thermal management air conditioning unit, comprising a main detection table, on one side of which a thermal management air conditioning unit is placed, characterized in that: The main detection table includes a coolant water tank, a heater, a first water pump, a filter and a plurality of ball valves; the coolant water tank, the first ball valve, the filter, the first water pump, the second ball valve, the thermal management air conditioning unit, the third ball valve and the heater are connected in sequence, and the heater is connected to the coolant water tank to form a closed coolant circulation loop; A coolant recovery device is arranged between the main detection table and the thermal management air conditioning unit. The coolant recovery device includes a recovery unit and a second water pump. The water outlet of the recovery unit is connected to the water inlet end of the second water pump; the water outlet end of the second water pump is connected to the coolant water tank for pumping back the coolant; The thermal management air conditioning unit is provided with a waterway interface assembly extending downward, and the waterway interface assembly is connected to the coolant circulation loop through a water pipe; The recovery unit has a recovery port extending upward, and the recovery port is arranged directly below the waterway interface assembly. The recovery unit is used for receiving the coolant flowing out of the waterway interface assembly; The main detection table further includes a computer, a low-voltage regulated power supply and a high-voltage regulated power supply; the thermal management air conditioning unit includes a high-voltage power supply interface and a low-voltage power supply interface. The low-voltage regulated power supply is electrically connected to the low-voltage power supply interface, and the high-voltage regulated power supply is electrically connected to the high-voltage power supply interface; the thermal management air conditioning unit is provided with a unit controller, and the computer is connected to the unit controller.

2. The detection device for a thermal management air conditioning unit according to claim 1, characterized in that, The first water pump includes a drainage end and a water inlet end. The water inlet end of the first water pump is connected to the filter, the first ball valve and the coolant water tank in sequence through a water pipe, and the drainage end of the first water pump is connected to the second ball valve and the thermal management air conditioning unit in sequence through a water pipe.

3. The detection device for a thermal management air conditioning unit according to claim 1, characterized in that, The heater includes an output end and an input end. The input end is connected to the third ball valve and the thermal management air conditioning unit in sequence through a water pipe, and the output end is connected to the coolant water tank through a water pipe.

4. A thermal management air conditioner unit detection device according to claim 1, characterized in that, The low-voltage regulated power supply is connected to the commercial power supply. The low-voltage regulated power supply is used for converting the input commercial power supply into low-voltage direct current for output; the high-voltage regulated power supply is connected to the commercial power supply. The high-voltage regulated power supply is used for converting the input commercial power supply into high-voltage direct current for output; The thermal management air conditioning unit further includes a compressor and a blower. The high-voltage regulated power supply is used for supplying power to the compressor; the low-voltage regulated power supply is used for supplying power to the first water pump, the second water pump, the heater and the blower.

5. The detection device for a thermal management air conditioning unit according to claim 4, characterized in that, The main detection table further includes an operation panel. The operation panel includes a high-voltage power-on indicator light, a high-voltage power-off indicator light, a low-voltage power-on indicator light, a low-voltage power-off indicator light, a high-voltage power-on button, a high-voltage power-off button, a low-voltage power-on button, a low-voltage power-off button and an emergency stop switch button; It also includes a high-voltage electrical circuit; in the high-voltage electrical circuit, the emergency stop switch button is connected in series with the high-voltage power-on button and the high-voltage power-off button in sequence; the low-voltage power-on button and the low-voltage power-off button are connected in series, and the low-voltage power-on button and the low-voltage power-off button are connected in parallel at both ends of the high-voltage power-on button and the high-voltage power-off button; the high-voltage power-on indicator light is connected in parallel at both ends of the high-voltage power-on button, and the high-voltage power-off indicator light is connected in parallel at both ends of the high-voltage power-off button; the low-voltage power-on indicator light is connected in parallel at both ends of the low-voltage power-on button, and the low-voltage power-off indicator light is connected in parallel at both ends of the low-voltage power-off button.

6. The detection device for a thermal management air conditioning unit according to claim 5, characterized in that, A QF1 main power switch and multiple electrical sockets are provided at the rear side of the detection table main body, and the QF1 main power switch is connected to the three-phase live wire, the neutral wire N and the ground wire G through multiple wiring terminals respectively; among them, the three-phase live wire includes the live wire L1, the live wire L2 and the live wire L3; The live wire L1 is electrically connected to the first fuse and the emergency stop switch button in sequence; the live wire L1, the live wire L2, the live wire L3 and the ground wire G are electrically connected to the high-voltage regulated power supply at the same time; the live wire L3, the neutral wire N and the ground wire G are electrically connected to the low-voltage regulated power supply at the same time; each of the electrical sockets is electrically connected to the low-voltage regulated power supply.

7. The detection device for a thermal management air-conditioning unit according to claim 5, characterized in that, The operation panel also includes a heater-on indicator light, a heater controller, a heater button, a water pump-on indicator light, and a manual water pump button; It also includes a low-voltage electrical circuit; in the low-voltage electrical circuit, the positive and negative poles of the low-voltage regulated power supply are electrically connected to the positive and negative poles of the heater respectively, the positive and negative poles of the first water pump are connected in parallel with the heater, the positive pole of the low-voltage regulated power supply is also electrically connected to one end of the heater button through the second fuse in sequence, the other end of the heater button is connected to the heater controller, the CAN pin of the heater controller is respectively connected to the second pin and the third pin of the heater, and the heater-on indicator light is connected in parallel at both ends of the heater controller; the water pump-on indicator light is connected in series with the manual water pump button and is connected in parallel at both ends of the heater button and the heater-on indicator light.

8. The detection device for a thermal management air conditioning unit according to claim 1, characterized in that, The thermal management air-conditioning unit is placed on a mobile rack, and multiple mobile pulleys are provided at the bottoms of the mobile rack and the detection table main body.

9. The detection device for a thermal management air conditioning unit according to claim 1, characterized in that, The waterway interface assembly includes at least a water inlet interface and a water outlet interface, the water inlet interface is connected to the second ball valve through a water pipe, and the water outlet interface is connected to the third ball valve through a water pipe.

10. The detection device for a thermal management air conditioning unit according to claim 1, characterized in that, The heater is a PTC heater.

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