An electric vehicle thermal management test bench

Abstract

The present invention relates to an electric vehicle thermal management test bench, which belongs to the field of automobile thermal management system testing, including a compressor mounting part, a water-cooled condenser mounting part, an external heat exchanger mounting part, a battery cooler mounting part, and an air conditioning box mounting part; the electric vehicle thermal management test bench is set along the three axes of the positive three-axis coordinate system XYZ arranged at 90 degrees to each other; it can fully simulate the layout of the actual vehicle, including the coordinate positions of the compressor, plate heat exchanger, condenser, air conditioning box, and electronic expansion valve, and more realistically simulate the working conditions of each heat exchanger of the actual vehicle, so that its verification performance is more in line with the actual situation. It can optimize and avoid in advance, greatly reduce development costs, and shorten the development cycle. It can independently manage and control the temperature and flow of the antifreeze in the coolant circuit, improve the accuracy of the test data, and can manage the direction and connection of the high and low voltage wiring harnesses in different zones to ensure the safety of the test.

Description

Technical Field

[0001] The invention belongs to the field of automobile thermal management system testing and relates to an electric vehicle thermal management test bench. Background Art

[0002] As electric vehicles are becoming more and more popular at home and abroad, the comfort and safety of electric vehicles have become more and more concerned, and the research and development of thermal management systems has become an indispensable part of electric vehicle development. At present, the actual vehicle bench test of the thermal management system is relatively random, with poor water insulation, mixed installation of high and low voltage lines, and large differences in location from the actual vehicle, resulting in low test accuracy and low safety. Summary of the invention

[0003] In view of this, an object of the present invention is to provide an electric vehicle thermal management test bench to meet the thermal management system testing requirements of the entire vehicle.

[0004] In order to achieve the above object, the present invention provides the following technical solutions:

[0005] An electric vehicle thermal management test bench comprises a compressor mounting portion, a water-cooled condenser mounting portion, an external heat exchanger mounting portion, a battery cooler mounting portion, and an air conditioning box mounting portion; the electric vehicle thermal management test bench is arranged along three axes of a positive three-axis coordinate system XYZ arranged at 90 degrees to each other;

[0006] The compressor mounting portion comprises a first fixed shaft arranged along the Z axis and a mounting plate movably arranged along the first fixed shaft, wherein the mounting plate is movably arranged along the axial direction and the circumferential direction of the first fixed shaft;

[0007] The water-cooled condenser mounting portion includes a second fixed axis arranged along the Z axis, a third fixed axis intersecting the second fixed axis and arranged along the X axis, and a fourth fixed axis intersecting the second fixed axis and arranged along the Y axis;

[0008] The external heat exchanger mounting portion includes a fifth fixed shaft and a sixth fixed shaft arranged along the Z axis; the fifth fixed shaft and the sixth fixed shaft are slidably arranged along the fourth fixed shaft;

[0009] The battery cooler mounting portion includes a seventh fixed shaft arranged along the Y axis, and the third fixed shaft is slidably arranged along the seventh fixed shaft;

[0010] The air conditioning box mounting portion includes an eighth fixed shaft arranged along the Z axis, a ninth fixed shaft slidably arranged on the eighth fixed shaft and arranged along the Y axis, and a tenth fixed shaft disposed on the ninth fixed shaft and arranged along the X axis.

[0011] Optionally, a plurality of fixed axes are arranged in a staggered manner to form a rectangular support frame.

[0012] Optionally, the battery cooler mounting portion further includes pipe clamps disposed on different fixed axes for respectively fixing a cooling circuit and a heating circuit of the battery cooler.

[0013] Optionally, the high voltage electricity for the compressor and the low voltage electricity for the control power supply are arranged on different fixed shafts.

[0014] Optionally, the air conditioning box installation part also includes a coolant collection box.

[0015] Optionally, the first fixed axis is fixedly arranged.

[0016] Optionally, the fourth fixed axis is fixedly arranged, and the second fixed axis is movably arranged along the fourth fixed axis.

[0017] Optionally, the eighth fixed shaft is fixedly arranged.

[0018] Optionally, insulating shells are provided outside the locations where the high voltage electricity and the low voltage electricity are arranged.

[0019] The beneficial effects of the present invention are:

[0020] The present invention can completely simulate the layout of the actual vehicle, including the coordinate positions of the compressor, plate heat exchanger, condenser, air conditioning box, and electronic expansion valve, and more realistically simulate the working conditions of each heat exchanger of the actual vehicle, so that its verification performance is more in line with the actual situation, and in the initial bench verification, it can find areas that can be optimized and avoid them in advance, greatly reducing development costs and shortening development cycles. It can independently manage and control the temperature and flow of the antifreeze in the coolant circuit, improve the accuracy of the test data, and manage the direction and connection of the high and low voltage harnesses in different zones to ensure the safety of the test.

[0021] Other advantages, objectives and features of the present invention will be described in the following description to some extent, and to some extent, will be obvious to those skilled in the art based on the following examination and study, or can be taught from the practice of the present invention. The objectives and other advantages of the present invention can be realized and obtained through the following description. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] In order to make the purpose, technical solutions and advantages of the present invention more clear, the present invention will be described in detail below in conjunction with the accompanying drawings, wherein:

[0023] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0024] Figure 2 This is a schematic diagram of the Z-axis adjustment of the compressor;

[0025] Figure 3It is a schematic diagram of the Y-axis movement and Z-axis rotation of the compressor;

[0026] Figure 4 This is a schematic diagram of the Z-axis adjustment of the water-cooled condenser;

[0027] Figure 5 It is a schematic diagram of the X-axis and Y-axis adjustment of the water-cooled condenser;

[0028] Figure 6 It is a schematic diagram of the Z-axis adjustment of the external heat exchanger;

[0029] Figure 7 It is a schematic diagram of the Y-axis adjustment of the external heat exchanger;

[0030] Figure 8 This is a schematic diagram of the X-axis adjustment of the battery cooler;

[0031] Fig. 9 It is a schematic diagram of the Y-axis and Z-axis adjustment of the battery cooler;

[0032] Fig.10 It is the schematic diagram of the X-axis and Z-axis adjustment of the air conditioning box;

[0033] Fig.11 This is a schematic diagram of the Y-axis adjustment of the air conditioning box;

[0034] Fig.12 It is a schematic diagram of the fixing positions of the cooling circuit and the heating circuit respectively;

[0035] Fig.13 It is a schematic diagram of the structure after the air conditioning components are installed in the present invention.

[0036] Figure numerals: compressor 1, water-cooled condenser 2, external heat exchanger 3, battery cooler 4, air conditioning box 5, cooling circuit 6, heating circuit 7, condensate collection box 8, low voltage electricity 9, high voltage electricity 10, first fixed shaft 11, mounting plate 12, second fixed shaft 13, third fixed shaft 14, seventh fixed shaft 15, fourth fixed shaft 16, sixth fixed shaft 17, fifth fixed shaft 18, eighth fixed shaft 19, tenth fixed shaft 20, ninth fixed shaft 21. DETAILED DESCRIPTION

[0037] The following describes the embodiments of the present invention by specific examples, and those skilled in the art can easily understand other advantages and effects of the present invention from the contents disclosed in this specification. The present invention can also be implemented or applied through other different specific embodiments, and the details in this specification can also be modified or changed in various ways based on different viewpoints and applications without departing from the spirit of the present invention. It should be noted that the illustrations provided in the following embodiments only illustrate the basic concept of the present invention in a schematic manner, and the following embodiments and features in the embodiments can be combined with each other without conflict.

[0038] Among them, the drawings are only used for illustrative explanations, and they only represent schematic diagrams rather than actual pictures, and should not be understood as limitations on the present invention. In order to better illustrate the embodiments of the present invention, some parts of the drawings may be omitted, enlarged or reduced, and do not represent the size of actual products. For those skilled in the art, it is understandable that some well-known structures and their descriptions in the drawings may be omitted.

[0039] The same or similar numbers in the drawings of the embodiments of the present invention correspond to the same or similar parts; in the description of the present invention, it should be understood that if the terms "upper", "lower", "left", "right", "front", "rear", etc. indicate the orientation or position relationship, they are based on the orientation or position relationship shown in the drawings, which is 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 operate in a specific orientation. Therefore, the terms describing the position relationship in the drawings are only used for illustrative purposes and cannot be understood as limiting the present invention. For ordinary technicians in this field, the specific meanings of the above terms can be understood according to specific circumstances.

[0040] See also Figures 1 to 13 , is an electric vehicle thermal management test bench, used for the installation and fixation of the compressor 1, water-cooled condenser 2, external heat exchanger 3, battery cooler 4, and air conditioning box 5, and can be adjusted to different positions corresponding to different models. The installation method of the compressor 1 on the whole vehicle is generally that the axis is parallel to the X-axis or Y-axis of the vehicle body coordinate system, rotates around the Z-axis and is adjustable in height on the Z-axis. This solution can simulate the actual situation and adjust the compressor 1 to the mounting plate 12, and adjust the height and rotation of the compressor 1 by adjusting the height and rotation of the mounting plate 12 on the first fixed axis 11.

[0041] The water-cooled condenser 2 is generally used in the heat pump mode of new energy vehicles. The water-cooled condenser 2 is used to heat the antifreeze and then transport the heat source to the passenger compartment. The arrangement is generally parallel to any one of the X, Y, and Z axes, and can be moved freely in three directions. The water-cooled condenser mounting portion includes a second fixed axis 13 arranged along the Z axis, a third fixed axis 14 intersecting the second fixed axis 13 and arranged along the X axis, and a fourth fixed axis 16 intersecting the second fixed axis 13 and arranged along the Y axis. The height of the water-cooled condenser 2 can be adjusted along the second fixed axis 13, and its relative position on the X axis and the Y axis can be adjusted by moving the third fixed axis 14 and the fourth fixed axis 16. The lower part of the water-cooled condenser 2 is fixed to the second fixed axis 13 by an angle steel.

[0042] The external heat exchanger 3 is installed on the whole vehicle in a manner that the manifold direction is parallel to the Z axis. The test bench of this solution can realize the movement and adjustment of the condenser in the Y axis and Z axis directions. The external heat exchanger installation part includes a fifth fixed axis 18 and a sixth fixed axis 17 arranged along the Z axis; the fifth fixed axis 18 and the sixth fixed axis 17 are slidably arranged along the fourth fixed axis 16 to adjust their Y axis position, and the fixed points of the external heat exchanger on the fifth fixed axis 18 and the sixth fixed axis 17 are adjusted to adjust their relative position on the Z axis.

[0043] Since new energy vehicles need to cool or heat the battery, they are almost all equipped with a battery cooler 4. The battery cooler 4 of this solution can be installed in all directions and moved in three axial directions. The battery cooler installation part includes a seventh fixed axis 15 arranged along the Y axis, and the third fixed axis 14 is arranged along the seventh fixed axis 15 for sliding. The relative position of the third fixed axis 14 on the X axis is adjusted by adjusting the installation point of the third fixed axis 14, and the position of the third fixed axis 14 and the seventh fixed axis 15 on the Y axis and Z axis is adjusted by sliding.

[0044] The air conditioning box 5 is used to manage the temperature of the passenger compartment. This solution also designs the installation position of the air conditioning box 5. The air conditioning box 5 basically only has three axial movements that need to be adjusted in the vehicle, so the bench simulation of the actual vehicle is open to the degrees of freedom in these three directions. The air conditioning box installation portion includes an eighth fixed shaft 19 arranged along the Z axis, a ninth fixed shaft 21 slidably arranged on the eighth fixed shaft 19 and arranged along the Y axis, and a tenth fixed shaft 20 arranged on the ninth fixed shaft 21 and arranged along the X axis.

[0045] Once the use of water-cooled condenser 2 and battery cooler 4 is involved in new energy vehicles, the use of coolant will be involved. Comprehensive and centralized management of coolant can effectively improve test efficiency and data accuracy. This solution classifies and constrains the cooling and heating dual circuits of coolant. Pipe clamps are used to constrain and fix the water pipes. The cooling circuit 6 water pipes are connected to the cooling medium equipment, and the heating circuit 7 water pipes are connected to the heating medium equipment. In addition, a condensate collection box 8 is arranged to collect air conditioning condensate to prevent condensate from flowing out and ensure test safety.

[0046] The starting power supply used by the compressor 1 of the new energy vehicle is basically 350V high voltage electricity 10, and the control power supply is 12V low voltage electricity 9. This scheme divides the two electrical circuits into zones, and insulates them with insulating glue. At the same time, it avoids the common area with the water channel. The wiring harness goes on the upper part of the test bench and the coolant circuit goes on the bottom to prevent water leakage from dripping on the wiring harness, so as to ensure the safety of the test.

[0047] This solution solves the problem of the lack of management of coolant circuits and electrical circuits in traditional test benches, and can be used for the layout and adjustment of various vehicle models. It adds verification of plate heat exchangers that are often used in new energy vehicles, and realizes zoning management of heating circuits 7 and cooling circuits 6. It can meet the test needs of most domestic vehicle models, and also manages high-voltage electricity 10 and low-voltage electricity 9 in zoning isolation, ensuring the safety and reliability of the test.

[0048] Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of the present invention rather than to limit it. Although the present invention has been described in detail with reference to the preferred embodiments, those skilled in the art should understand that the technical solution of the present invention can be modified or replaced by equivalents without departing from the purpose and scope of the technical solution, which should be included in the scope of the claims of the present invention.

Claims

1. An electric vehicle thermal management test bench, characterized by: It includes a compressor mounting part, a water-cooled condenser mounting part, an external heat exchanger mounting part, a battery cooler mounting part, and an air conditioning box mounting part; the electric vehicle thermal management test bench is set along the three axes of the positive three-axis coordinate system XYZ arranged at 90 degrees to each other; The compressor mounting portion comprises a first fixed shaft (11) arranged along the Z axis and a mounting plate (12) movably arranged along the first fixed shaft, wherein the mounting plate is movably arranged along the axial direction and the circumferential direction of the first fixed shaft; The water-cooled condenser mounting portion comprises a second fixed axis (13) arranged along the Z axis, a third fixed axis (14) intersecting the second fixed axis and arranged along the X axis, and a fourth fixed axis (16) intersecting the second fixed axis and arranged along the Y axis; The external heat exchanger mounting portion comprises a fifth fixed shaft (18) and a sixth fixed shaft (17) arranged along the Z axis; the fifth fixed shaft (18) and the sixth fixed shaft (17) are slidably arranged along the fourth fixed shaft (16); The battery cooler mounting portion comprises a seventh fixed shaft (15) arranged along the Y axis, and the third fixed shaft (14) is slidably arranged along the seventh fixed shaft (15); The air conditioning box mounting portion comprises an eighth fixed shaft (19) arranged along the Z axis, a ninth fixed shaft (21) slidably arranged on the eighth fixed shaft and arranged along the Y axis, and a tenth fixed shaft (20) arranged on the ninth fixed shaft and arranged along the X axis; The first fixed shaft (11) is fixedly arranged; the fourth fixed shaft (16) is fixedly arranged, and the second fixed shaft (13) is movably arranged along the fourth fixed shaft (16).

2. The electric vehicle thermal management test bench according to claim 1, characterized in that: A plurality of fixed shafts are arranged in a staggered manner to form a rectangular support frame.

3. The electric vehicle thermal management test bench according to claim 2, characterized in that: The battery cooler mounting portion further comprises pipe clamps which are arranged on different fixed axes and are used to respectively fix the cooling circuit and the heating circuit of the battery cooler.

4. The electric vehicle thermal management test bench according to claim 2, characterized in that: The high voltage electricity for the compressor and the low voltage electricity for the control power supply are arranged on different fixed shafts.

5. The electric vehicle thermal management test bench according to claim 1, characterized in that: The air conditioning box installation part also includes a coolant collection box.

6. The electric vehicle thermal management test bench according to claim 1, characterized in that: The eighth fixed shaft (22) is fixedly arranged.

7. The electric vehicle thermal management test bench according to claim 4, characterized in that: Insulating shells are provided outside the arrangement positions of the high voltage electricity and the low voltage electricity.

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