A water-oil integrated temperature control system for new energy motor testing

Abstract

The utility model discloses a new energy motor test water oil integrated temperature control system, include: water temperature control subsystem is used for connecting and adjusting the coolant temperature of motor controller, oil temperature control subsystem is used for connecting and adjusting the lubricating oil temperature of motor body, ice water system is used for cooling coolant and lubricating oil, and water temperature control subsystem and oil temperature control subsystem all are linked with ice water system, and the measurement and control system is used for connecting and controlling water temperature control subsystem and oil temperature subsystem, through above -mentioned mode, the utility model can significantly reduce the equipment cost and space occupation of new energy motor test bench, and the carbonization failure problem that avoids lubricating oil because direct heating leads to simultaneously.

Description

Technical Field

[0001] This utility model relates to the technical field of testing systems for new energy vehicle motors, and in particular to a water-oil integrated temperature control system for testing new energy motors. Background Technology

[0002] In the field of new energy vehicle motor performance testing, precise temperature control of the new energy motor body and the new energy motor controller is required to ensure the accuracy and reliability of the test. With the widespread application of motor oil cooling technology, test benches need to be equipped with a dedicated oil temperature control subsystem for the motor body to regulate the working temperature of its lubricating oil. At the same time, the motor controller usually uses water cooling, so the test bench also needs to be equipped with an independent water temperature control system. This conventional dual independent system mode of "oil temperature control and water temperature control" has become the standard configuration of current motor test benches. However, this mode has significant drawbacks: First, it requires the purchase, installation, commissioning, and maintenance of two independent temperature control devices, resulting in high equipment purchase costs; second, each system occupies valuable test site space, increasing the overall footprint of the equipment; making the construction process of the test bench more complex and time-consuming, and correspondingly increasing the subsequent operation and maintenance costs. Utility Model Content

[0003] The main technical problem solved by this utility model is to provide an integrated water and oil temperature control system for testing new energy motors, which can significantly reduce the equipment cost and space occupation of new energy motor test benches, while avoiding the carbonization failure of lubricating oil caused by direct heating.

[0004] To solve the above-mentioned technical problems, the present invention adopts the following technical solution: A new energy motor testing water and oil integrated temperature control system is provided, comprising: a water temperature control subsystem for connecting and regulating the coolant temperature of the motor controller; an oil temperature control subsystem for connecting and regulating the lubricating oil temperature of the motor body; an ice water system for cooling the coolant and lubricating oil; both the water temperature control subsystem and the oil temperature control subsystem are connected to the ice water system; and a measurement and control system for connecting and controlling the water temperature control subsystem and the oil temperature subsystem; the water temperature control subsystem includes a variable frequency water pump, a tubular heater, and... The system includes a water-cooled plate heat exchanger, a first three-way proportional valve, and a motor controller. The coolant flows through the tubular heater and the water-cooled plate heat exchanger, and under the regulation of the first three-way proportional valve, it flows into and out of the motor controller, thereby regulating the temperature of the motor controller. The variable frequency water pump provides power for the coolant circulation. The oil temperature control subsystem includes a variable frequency oil pump, an intermediate medium oil heater, an oil-cooled plate heat exchanger, and a second three-way proportional valve. The lubricating oil flows through the intermediate medium oil heater and the oil-cooled plate heat exchanger, and under the regulation of the second three-way proportional valve, it flows into and out of the motor body, thereby regulating the temperature of the motor body. The variable frequency oil pump provides power for the lubricating oil circulation.

[0005] Preferably, the water temperature control subsystem also includes an expansion tank, which is located between the variable frequency water pump and the motor controller. The coolant flowing out of the motor controller flows into the expansion tank, and the variable frequency water pump is connected to the expansion tank.

[0006] Preferably, the water temperature control subsystem also includes a blower system, which is connected to the water inlet of the motor controller. After the test is completed, the coolant in the motor controller can be blown back to the expansion tank through the blower system.

[0007] Preferably, the oil temperature control subsystem also includes an oil replenishment tank, which includes an oil supply line and an oil return line. The oil supply line is connected to the variable frequency oil pump, and the oil return line is connected to the oil outlet of the motor body.

[0008] Preferably, the intermediate medium oil heater is filled with heat transfer medium oil, and the intermediate medium oil heater indirectly heats the lubricating oil by exchanging heat with the lubricating oil through the intermediate medium oil.

[0009] The beneficial effects of this utility model are as follows: By integrating the originally independent oil temperature control subsystem and water temperature control subsystem into the same temperature control equipment and allowing them to share the resources of the measurement and control system and the chilled water system, the system significantly reduces the equipment purchase cost and the space occupied by the test site; its modular design supports three working modes: water temperature control, oil temperature control, and integrated water and oil temperature control, greatly improving equipment utilization and testing flexibility; the oil temperature control subsystem uses an intermediate medium oil heater to indirectly exchange heat with the lubricating oil, combined with a three-way proportional valve to dynamically distribute the flow of the hot and cold paths, completely solving the problem of local carbonization failure of lubricating oil caused by direct contact with the heating element; the automatic oil supply and return pipeline design of the expansion tank and venting system in the water temperature subsystem and the oil replenishment tank in the oil temperature subsystem further simplifies the operation process, realizes automatic venting, recovery, and level control of coolant and lubricating oil, effectively reduces the intensity of manual intervention and maintenance complexity, and comprehensively improves the efficiency and reliability of new energy motor testing. Attached Figure Description

[0010] Figure 1 This is a schematic diagram of the overall process of this utility model.

[0011] The components in the attached diagram are labeled as follows:

[0012] 11. Variable frequency water pump; 12. Tube heater; 13. Water-cooled plate heat exchanger; 14. First three-way proportional valve; 15. Expansion tank; 16. Blow-out system;

[0013] 21. Variable frequency oil pump; 22. Intermediate medium oil heater; 23. Oil-cooled plate heat exchanger; 24. Second three-way proportional valve; 25. Oil replenishment tank;

[0014] 30. Chilled water system; 40. Measurement and control system; 50. Motor controller; 60. Motor body. Detailed Implementation

[0015] To make the above-mentioned objects, features, and advantages of this utility model more apparent and understandable, the specific embodiments of this utility model will be described in detail below with reference to the accompanying drawings. Many specific details are set forth in the following description to provide a full understanding of this utility model. However, this utility model can be implemented in many other ways different from those described herein, and those skilled in the art can make similar modifications without departing from the spirit of this utility model. Therefore, this utility model is not limited to the specific embodiments disclosed below.

[0016] In the description of this utility model, 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", "axial", "radial", "circumferential", etc., indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this utility model and simplifying the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model.

[0017] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this utility model, "a plurality of" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0018] In this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," "joining," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components, unless otherwise explicitly limited. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0019] In this utility model, unless otherwise explicitly specified and limited, "above" or "below" the second feature can mean that the first feature is in direct contact with the second feature, or that the first feature is in indirect contact with the second feature through an intermediate medium. Furthermore, "above," "on top of," and "over" the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature.

[0020] It should be noted that when an element is referred to as being "fixed to" or "set on" another element, it can be directly on the other element or there may be an intervening element. When an element is considered to be "connected to" another element, it can be directly connected to the other element or there may be an intervening element. The terms "vertical," "horizontal," "upper," "lower," "left," "right," and similar expressions used herein are for illustrative purposes only and do not represent the only possible implementation.

[0021] Unless otherwise specified, physical quantities in formulas should be understood as basic quantities of SI base units, or derived quantities derived from basic quantities through mathematical operations such as multiplication, division, differentiation, or integration.

[0022] Example:

[0023] refer to Figure 1 A new energy motor testing water and oil integrated temperature control system includes: a water temperature control subsystem for connecting and regulating the coolant temperature of a motor controller 50; an oil temperature control subsystem for connecting and regulating the lubricating oil temperature of a motor body 60; an ice-water system 30 for cooling the coolant and lubricating oil; both the water temperature control subsystem and the oil temperature control subsystem are connected to the ice-water system 30; and a measurement and control system 40 for connecting and controlling the water temperature control subsystem and the oil temperature control subsystem. Thus, the water temperature control subsystem and the oil temperature control subsystem share the same measurement and control system 40, enabling the measurement and control system 40 to monitor the water temperature, flow rate, and pressure of the water temperature control subsystem and the oil temperature, flow rate, and pressure of the oil temperature control subsystem in real time, thereby achieving overall control of both subsystems.

[0024] refer to Figure 1The water temperature control subsystem includes a variable frequency water pump 11, a tubular heater 12, a water-cooled plate heat exchanger 13, and a first three-way proportional valve 14. Coolant flows through the tubular heater 12 and the water-cooled plate heat exchanger 13, and under the regulation of the first three-way proportional valve 14, flows into and out of the motor controller 50, thereby regulating the temperature of the motor controller 50 through heat exchange. The variable frequency water pump 11 provides power for the circulation of coolant in the loop. The monitoring and control system 40 controls the opening and closing of the first three-way proportional valve 14 and the temperature of the tubular heater 12 based on the detected operating temperature of the motor controller 50, thereby controlling the operating temperature of the motor controller 50 within a specified range. The tubular heater 12 is used to heat the coolant, and the water-cooled plate heat exchanger 13 is used to cool the coolant.

[0025] When it is necessary to heat up the motor controller 50, and only the coolant needs to be heated, the valve connected to the water-cooled plate heat exchanger 13 via the first three-way proportional valve 14 is closed, and only the valve connected to the tubular heater 12 is allowed to connect. The tubular heater 12 is running, and the coolant flows into the motor controller 50 through the inlet via the tubular heater 12 and the first three-way proportional valve 14, and flows out of the motor controller 50 through the outlet, thereby rapidly heating up the motor controller 50. The coolant circulates under the drive of the variable frequency water pump 11.

[0026] Similarly, when it is necessary to cool down the motor controller 50, and only the coolant is needed for cooling, the valve connected to the tubular heater 12 of the first three-way proportional valve 14 is closed, and only the valve connected to the water-cooled plate heat exchanger 13 is allowed to connect. The tubular heater 12 is not running, and the coolant flows into the motor controller 50 through the inlet of the non-operating tubular heater 12, water-cooled plate heat exchanger 13, and first three-way proportional valve 14, and flows out of the motor controller 50 through the outlet of the motor controller 50, thereby quickly cooling down the motor controller 50. The coolant circulates under the drive of the variable frequency water pump 11.

[0027] Similarly, when the required temperature is the result of neutralizing the cooling and heating coolants, the coolant flowing from the operating tubular heater 12 flows into the first three-way proportional valve 14 and the water-cooled plate heat exchanger 13, then back to the first three-way proportional valve 14. The monitoring and control system 40 adjusts the opening and closing degrees of the valve connected to the tubular heater 12 and the valve connected to the water-cooled plate heat exchanger 13 based on the measured state, thereby neutralizing the different temperatures of the coolants to achieve the desired coolant temperature.

[0028] refer to Figure 1The water temperature control subsystem also includes an expansion tank 15, which is connected between the variable frequency water pump 11 and the motor controller 50. The coolant flowing out of the motor controller 50 flows into the expansion tank 15. The variable frequency water pump 11 is connected to the expansion tank 15, thereby enabling the air in the coolant to be discharged.

[0029] refer to Figure 1 The water temperature control subsystem also includes a blower system 16, which is connected to the water inlet of the motor controller 50. After the test is completed, the coolant in the motor controller 50 can be blown back into the expansion tank 15 through the blower system 16.

[0030] refer to Figure 1 The oil temperature control subsystem includes a variable frequency oil pump 21, an intermediate medium oil heater 22, an oil-cooled plate heat exchanger 23, and a second three-way proportional valve 24. Lubricating oil flows through the intermediate medium oil heater 22 and the oil-cooled plate heat exchanger 23, and under the regulation of the second three-way proportional valve 24, flows into and out of the motor body 60, thereby regulating the temperature of the motor body 60. The variable frequency oil pump 21 provides power for the lubricating oil circulation. The monitoring and control system 40 controls the opening and closing of the second three-way proportional valve 24 and the temperature of the intermediate medium oil heater 22 based on the detected operating temperature of the motor body 60, thereby controlling the operating temperature of the motor body 60 within a specified range. The intermediate medium oil heater 22 is used to heat the lubricating oil, and the oil-cooled plate heat exchanger 23 is used to cool the lubricating oil.

[0031] When it is necessary to heat up the motor body 60, and only the lubricating oil needs to be heated, the valve connected to the oil-cooled plate heat exchanger 23 via the second three-way proportional valve 24 is closed, and only the valve connected to the intermediate medium oil heater 22 is allowed to connect. The intermediate medium oil heater 22 is running, and the lubricating oil flows into the motor body 60 through the inlet of the motor body 60 via the intermediate medium oil heater 22 and the second three-way proportional valve 24, and flows out of the motor body 60 through the outlet of the motor body 60, thereby rapidly heating up the motor body 60. The lubricating oil circulates under the drive of the variable frequency oil pump 21.

[0032] Similarly, when it is necessary to cool down the motor body 60, and only the lubricating oil needs to be cooled, the valve connected to the intermediate medium oil heater 22 of the second three-way proportional valve 24 is closed, and only the valve connected to the oil-cooled plate heat exchanger 23 is allowed to connect. The intermediate medium oil heater 22 does not operate. The lubricating oil flows into the motor body 60 through the inlet of the motor body 60 via the oil-cooled plate heat exchanger 23 and the second three-way proportional valve 24, and flows out of the motor body 60 through the outlet of the motor body 60, thereby quickly cooling down the motor body 60. The lubricating oil circulates under the drive of the variable frequency oil pump 21.

[0033] Similarly, when the required temperature is the result of neutralizing the cooled and heated lubricating oil, the lubricating oil flows through the oil-cooled plate heat exchanger 23 and the operating intermediate medium oil heater 22, both ending in the second three-way proportional valve 24. The monitoring and control system 40 adjusts the opening and closing degree of the valve connected to the intermediate medium oil heater 22 and the valve connected to the oil-cooled plate heat exchanger 23 within the second three-way proportional valve 24 based on the measured state, thereby neutralizing the lubricating oils of different temperatures to achieve the desired lubricating oil temperature.

[0034] refer to Figure 1 The oil temperature control subsystem also includes an oil replenishment tank 25, which includes an oil supply line and an oil return line. The oil supply line is connected to the variable frequency oil pump 21, and the oil return line is connected to the oil outlet of the motor body 60. When the oil temperature control subsystem starts, the oil return line of the oil replenishment tank 25 is first shut off, and the oil supply line of the oil replenishment tank 25 is opened. The variable frequency oil pump 21 draws lubricating oil from the oil replenishment tank 25, thereby providing an initial amount of lubricating oil to the oil temperature control subsystem and supplying it to the motor body 60. During the circulation process, the air in the circuit is discharged from the exhaust valve of the motor body 60. When the oil level in the tested motor body 60 reaches the expected height, the pipeline between the oil replenishment tank 25 and the oil circuit is shut off. At this time, the lubricating oil flow rate is adjusted in real time by the variable frequency oil pump 21. The temperature of the motor body 60 can be dynamically adjusted by the second three-way proportional valve 24 to achieve the ratio of lubricating oil passing through the oil-cooled plate heat exchanger 23 and the intermediate medium oil heater 22. After the test is completed, open the return oil line of the oil replenishment tank 25, and draw the lubricating oil from the motor body 60 and pump it into the oil replenishment tank 25.

[0035] refer to Figure 1 The intermediate medium oil heater 22 is filled with heat transfer medium oil. The intermediate medium oil heater 22 indirectly heats the lubricating oil by exchanging heat with the lubricating oil through the intermediate medium oil. This indirect heating method of lubricating oil solves the problem of carbonization and failure caused by long-term local overheating of lubricating oil.

[0036] The above description is merely an embodiment of this utility model and does not limit the patent scope of this utility model. Any equivalent structural or procedural transformations made based on the description and drawings of this utility model, or direct or indirect applications in other related technical fields, are similarly included within the patent protection scope of this utility model.

Claims

1. A water-oil integrated temperature control system for testing new energy motors, characterized in that, include: A water temperature control subsystem is used to connect to and regulate the coolant temperature of the motor controller (50); An oil temperature control subsystem is used to connect to and regulate the lubricating oil temperature of the motor body (60); The chilled water system (30) is used to cool the coolant and lubricating oil; the water temperature control subsystem and the oil temperature control subsystem are both connected to the chilled water system (30); The measurement and control system (40) is used to connect and control the water temperature control subsystem and the oil temperature subsystem; The water temperature control subsystem includes a variable frequency water pump (11), a tubular heater (12), a water-cooled plate heat exchanger (13), and a first three-way proportional valve (14). The coolant flows through the tubular heater (12) and the water-cooled plate heat exchanger (13) and flows into and out of the motor controller (50) under the regulation of the first three-way proportional valve (14), thereby regulating the temperature of the motor controller (50). The variable frequency water pump (11) provides power for the circulation of the coolant. The oil temperature control subsystem includes a variable frequency oil pump (21), an intermediate medium oil heater (22), an oil-cooled plate heat exchanger (23), and a second three-way proportional valve (24). The lubricating oil flows through the intermediate medium oil heater (22) and the oil-cooled plate heat exchanger (23) and flows into and out of the motor body (60) under the regulation of the second three-way proportional valve (24), thereby regulating the temperature of the motor body (60). The variable frequency oil pump (21) provides power for the circulation of lubricating oil.

2. The integrated water and oil temperature control system for testing new energy motors according to claim 1, characterized in that: The water temperature control subsystem also includes an expansion tank (15), which is located between the variable frequency water pump (11) and the motor controller (50). The coolant flowing out of the motor controller (50) flows into the expansion tank (15), and the variable frequency water pump (11) is connected to the expansion tank (15).

3. The integrated water and oil temperature control system for testing new energy motors according to claim 2, characterized in that: The water temperature control subsystem also includes a blower system (16), which is connected to the water inlet of the motor controller (50). After the test is completed, the coolant in the motor controller (50) can be blown back to the expansion tank (15) through the blower system (16).

4. The integrated water and oil temperature control system for testing new energy motors according to claim 1, characterized in that: The oil temperature control subsystem also includes an oil replenishment tank (25), which includes an oil supply line and an oil return line. The oil supply line is connected to the variable frequency oil pump (21), and the oil return line is connected to the oil outlet of the motor body (60).

5. A new energy motor testing water-oil integrated temperature control system according to claim 1 or 4, characterized in that: The intermediate medium oil heater (22) is filled with heat-conducting medium oil, and the intermediate medium oil heater (22) indirectly heats the lubricating oil by exchanging heat with the lubricating oil through the intermediate medium oil.

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