CN108776025B - Thermal management system test platform of electric drive system - Google Patents
Thermal management system test platform of electric drive system Download PDFInfo
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- CN108776025B CN108776025B CN201810594817.4A CN201810594817A CN108776025B CN 108776025 B CN108776025 B CN 108776025B CN 201810594817 A CN201810594817 A CN 201810594817A CN 108776025 B CN108776025 B CN 108776025B
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
- G01M17/00—Testing of vehicles
- G01M17/007—Wheeled or endless-tracked vehicles
Abstract
The invention discloses a test platform of a thermal management system of an electric drive system, which comprises a water pump, an electronic control unit, a flow control module, an upper computer, a filter, a heat exchanger, a heater, a temperature control module, a motor controller, a dynamometer, a first three-way electronic valve, a second three-way electronic valve, a first valve and a third valve, wherein the water pump, the heater and the heat exchanger are sequentially connected in a circulating manner, the motor controller is connected with the water pump, the motor and the upper computer, the third valve is used for adjusting the pressure of cooling liquid entering the test platform, the upper computer is used for setting target values of cooling liquid pressure, temperature and flow, the cooling liquid enters the test platform from the first valve, and the heat exchanger, the temperature control module, the first three-way electronic valve and the second three-way electronic valve jointly realize temperature control. The invention can solve the problem that the prior art can not comprehensively test the performance of the electric drive heat management system under the condition of variable working conditions (different pressures, temperatures and flows).
Description
Technical Field
The invention relates to the technical field of automobile testing, in particular to a thermal management system testing platform of an electric drive system.
Background
With the rapid development of the automobile industry and the continuous improvement and promotion of living conditions of people, automobiles become one of indispensable vehicles for people. The automobile keeping amount is increased year by year, more and more people own private automobiles, and the traditional fuel oil automobile is gradually changed to a new energy automobile along with the exhaustion of petroleum resources and the enhancement of environmental awareness of people.
The new energy automobile comprises a pure electric automobile, a hybrid automobile, a fuel cell automobile and the like, wherein an electric drive system of the new energy automobile which uses a motor and a storage battery as an electric drive and energy recovery device generally comprises a drive motor, a motor controller and the like, wherein the drive motor is the active power of the new energy automobile, and therefore various tests need to be carried out on the drive motor.
However, in the existing test items of the motor test system applied to the new energy automobile, the test items of the heat management system are lacked, so that the performance of the electric drive heat management system under the variable working conditions (different pressures, temperatures and flows) cannot be comprehensively tested, and the development of the electric drive system is influenced.
Disclosure of Invention
The invention aims to provide a test platform for a thermal management system of an electric drive system, which solves the problem that the prior art cannot comprehensively test the performance of the electric drive thermal management system under variable working conditions (different pressures, temperatures and flows).
The utility model provides a thermal management system test platform of electric drive system, includes water pump, electronic control unit, flow control module, host computer, filter, heat exchanger, heater, temperature control module, motor, machine controller, dynamometer machine, first tee bend electronic valve, second tee bend electronic valve, first valve, third valve, the water pump the heater heat exchanger is circulation connection in proper order, machine controller with the water pump the motor with the host computer is connected, the motor with heat exchanger with the dynamometer machine is connected, first tee bend electronic valve with the water pump the machine controller with the motor with heat exchanger's tie point is connected, second tee bend electronic valve with heat exchanger, the heater with the motor is connected, temperature control module with first tee bend electronic valve, The second tee bend electronic valve the heater the electronic control unit connects, the electronic control unit with flow control module the host computer is connected, the host computer with machine controller with the motor is connected, the third valve is connected the filter, the third valve is used for adjusting the pressure size that gets into test platform's coolant liquid, the host computer is used for setting for the target value of coolant liquid pressure, temperature, flow, and the coolant liquid is followed first valve gets into test platform, heat exchanger the temperature control module first tee bend electronic valve and the temperature control is realized jointly to the second tee bend electronic valve.
According to the test platform for the thermal management system of the electric drive system, which is provided by the invention, the test platform can be used for testing the thermal management effect in the development process of the electric drive system, the thermal management system of the electric drive system can be optimized, the performance of the electric drive system can be effectively improved and promoted, the influence of a single factor on the performance parameters of the electric drive system can be tested through the mutual cooperation of the temperature control module, the flow control module and the pressure control system, the influence of multiple factors on the performance parameters of the electric drive system can be tested, the functions of cooling/heating, temperature control, flow regulation and pressure regulation of cooling liquid of the electric drive system can be realized, the performance of the electric drive system under different pressures, temperatures and flows of the cooling liquid can be tested, the guarantee is provided for the development of the electric drive system, and the high-temperature cooling liquid at the outlet of the motor can be controlled to enter The proportion of (b) saves the energy required by the heater/heat exchanger to heat or cool the cooling liquid, and the test cost is low.
In addition, the thermal management system test platform of the electric drive system provided by the invention can also have the following additional technical characteristics:
furthermore, the test platform further comprises a second temperature sensor, one end of the second temperature sensor is connected with the temperature control module, the other end of the second temperature sensor is connected between the heat exchanger and the motor, the second temperature sensor enables the opening degree of the second three-way electronic valve to be changed through the temperature control module, after cooling liquid passes through the motor and the motor controller, two loops are formed, and one loop passes through the heat exchanger to become low-temperature cooling liquid; and the other path of the high-temperature cooling liquid directly flows back through the first three-way electronic regulating valve to form high-temperature cooling liquid, and the first three-way electronic regulating valve regulates the proportion of the high-temperature cooling liquid flowing back to the motor according to the set temperature to realize the control of constant temperature.
Further, test platform still includes first temperature sensor and third temperature sensor, first temperature sensor's one end with heater connection, the other end with temperature control module connects, third temperature sensor's one end is connected the water pump with between the motor controller, the other end with temperature control module connects.
Further, the test platform further comprises an electronic valve, a first flowmeter and a second flowmeter, the electronic valve is connected between the motor and the heat exchanger, the electronic valve is connected with the flow control module, one end of the first flowmeter is connected with the flow control module, the other end of the first flowmeter is connected between the motor controller and the water pump, one end of the second flowmeter is connected with the flow control module, the other end of the second flowmeter is connected between the motor and the heat exchanger, the flow of cooling liquid entering the motor and the motor controller is adjusted through the electronic valve, and the flow control module is used for adjusting the flow of the cooling liquid in the test platform according to signals of the first flowmeter and the second flowmeter.
Further, the test platform still includes the second valve, the second valve with heat exchanger connects, just the export is connected to the second valve, the second valve is arranged in the pressure release of pipeline in the test platform, prevents that the pressure of coolant liquid is too big in the test procedure.
Further, test platform still includes first pressure sensor, second pressure sensor, third pressure sensor, fourth pressure sensor, first pressure sensor sets up test platform's exit, just first pressure sensor with heat exchanger connects, second pressure sensor connects the water pump with between the motor controller, third pressure sensor sets up test platform's entrance, just third pressure sensor with the filter is connected, fourth pressure sensor sets up heat exchanger with between the motor.
Further, the way that the test platform tests the performance parameters of the motor and the motor controller under different flows by changing the flow is as follows:
the upper computer is used for setting a target value of the temperature of the cooling liquid in the test platform, the pressure of the cooling liquid is adjusted to a pressure target value by adjusting the opening degrees of the second valve and the third valve, and the temperature control module is combined to receive a temperature set value signal of the electronic control unit and control the heater to work so as to enable the cooling liquid to reach a temperature set value, and the opening degree of the first three-way electronic valve is adjusted in the test process, the proportion of high and low cooling liquid entering the reflux circulation loop is controlled to realize the constancy of the temperature set value, different flow values are set through the upper computer, the flow control module receives control signals of the electronic control unit, the opening of the electronic valve is controlled, and the flow of cooling liquid entering the motor and the motor controller in a control loop is controlled, so that performance parameters of the motor and the motor controller under different flows are tested.
Further, the test platform tests the temperature rise and the efficiency of the motor under different flows through changing the temperature size in the following mode:
the upper computer is used for setting a target value of the flow of the cooling liquid in the pipeline of the test platform, the opening degrees of the second valve and the third valve are adjusted to adjust the pressure of the cooling liquid to a pressure target value, meanwhile, the flow control module receives a control signal of the electronic control unit, controls the opening of the electronic valve, controls the flow of the cooling liquid entering the motor and the motor controller in a loop, different temperature values are set by the upper computer, the upper computer is combined with the temperature control module to receive a temperature set value signal of the electronic control unit and control the heater to work so that the cooling liquid reaches a temperature set value, and the opening of the first three-way electronic valve is adjusted in the test process, the proportion of high and low cooling liquid entering the reflux circulation loop is controlled, the constancy of a temperature set value is realized, and the temperature rise and the efficiency of the motor under different flow rates are tested.
Further, the way that the test platform tests the performance parameters of the motor and the motor controller under different flow rates by changing the pressure is as follows:
the upper computer sets the target values of the flow and the temperature of the cooling liquid in the pipeline of the test platform, and the upper computer is combined with the temperature control module to receive the temperature set value signal of the electronic control unit to control the heater to work so that the cooling liquid reaches the temperature set value, and the opening degree of the first three-way electronic valve is adjusted in the test process, the proportion of high and low cooling liquid entering the reflux circulation loop is controlled to realize the constancy of the temperature set value, the flow control module receives the control signal of the electronic control unit, controls the opening of the electronic valve, controls the flow of the cooling liquid entering the motor and the motor controller in a loop, the opening degrees of the second valve and the third valve are adjusted to set different pressures, and when all the set parameters reach a stable state, testing the performance parameters of the motor and the motor controller under different pressures.
Furthermore, the test platform is provided with an RS232 communication interface, the RS232 communication interface is communicated with a control system, and automatic control and test are realized through the control system.
Additional aspects and advantages of the invention will be set forth in part in the description which follows and, in part, will be obvious from the description, or may be learned by practice of the invention.
Drawings
The above and/or additional aspects and advantages of the present invention will become apparent and readily appreciated from the following description of the embodiments, taken in conjunction with the accompanying drawings of which:
fig. 1 is a block diagram of a thermal management system test platform of an electric drive system according to an embodiment of the present invention.
Detailed Description
In order to make the objects, features and advantages of the present invention comprehensible, embodiments accompanied with figures are described in detail below. Several embodiments of the invention are presented in the drawings. This invention may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete.
It will be understood that when an element is referred to as being "secured to" another element, it can be directly on the other element or intervening elements may also be present. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present. As used herein, the terms "vertical," "horizontal," "left," "right," "up," "down," and the like are for illustrative purposes only and do not indicate or imply that the referenced device or element must be in a particular orientation, constructed or operated in a particular manner, and is not to be construed as limiting the present invention.
In the present invention, unless otherwise expressly specified or limited, the terms "mounted," "connected," "secured," and the like are to be construed broadly and can, for example, be fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations. As used herein, the term "and/or" includes any and all combinations of one or more of the associated listed items.
Referring to fig. 1, a thermal management system testing platform of an electric drive system according to an embodiment of the present invention includes a water pump 1, an electronic control unit 2, a flow control module 3, an upper computer 4, a filter 5, a heat exchanger 6, a heater 7, a temperature control module 8, a motor 9, a motor controller 10, a dynamometer 11, a first three-way electronic valve ES1, a second three-way electronic valve ES2, a first valve S1, and a third valve S3.
The water pump 1, the heater 7 and the heat exchanger 6 are sequentially connected in a circulating manner, the motor controller 10 is connected with the water pump 1, the motor 9 and the upper computer 4, the motor 9 is connected with the heat exchanger 6 and the dynamometer 11, the first three-way electronic valve ES1 is connected with the water pump 1, the motor controller 10 and the connection point of the motor 9 and the heat exchanger 6, the second three-way electronic valve ES2 is connected with the heat exchanger 6, the heater 7 and the motor 9, the temperature control module 8 is connected with the first three-way electronic valve ES1, the second three-way electronic valve ES2, the heater 7 and the electronic control unit 2, the electronic control unit 2 is connected with the flow control module 3 and the upper computer 4, the upper computer 4 is connected with the motor controller 10 and the motor 9, the third valve S3 is connected to the filter 5, and the third valve S3 is used to adjust the pressure of the cooling liquid entering the testing platform, so that the heating value of the motor 9 is small, and the rapid temperature rise under the special test requirements is difficult to meet, and the target value of the temperature setting is achieved rapidly. Therefore, a heater 7 is provided in the circuit for directly heating the coolant. The heat exchanger 6 is used to transfer heat from the hot fluid to the cold fluid, so that the high temperature coolant becomes the low temperature coolant. The flow control module 3 is mainly used for controlling the flow of the cooling liquid, so that the flow of the cooling liquid reaches a flow set value.
The upper computer 4 is used for setting target values of pressure, temperature and flow of cooling liquid, the first valve S1 is connected with the filter 5, the cooling liquid enters the testing platform from the first valve S1, and the heat exchanger 6, the temperature control module 8, the first three-way electronic valve ES1 and the second three-way electronic valve ES2 jointly realize temperature control.
In this embodiment, the testing platform further includes a first temperature sensor T1, a second temperature sensor T2, and a third temperature sensor T3.
One end of the second temperature sensor T2 is connected to the temperature control module 8, and the other end is connected between the heat exchanger 6 and the motor 9, the second temperature sensor T2 changes the opening of the second three-way electronic valve ES2 through the temperature control module 8, after the cooling liquid passes through the motor 9 and the motor controller 10, two loops are formed, and one loop passes through the heat exchanger 6 to become low-temperature cooling liquid; the other path of the high-temperature cooling liquid directly flows back through the first three-way electronic regulating valve ES1 to form high-temperature cooling liquid, and the first three-way electronic regulating valve ES1 regulates the proportion of the high-temperature cooling liquid flowing back to the motor 9 according to the set temperature, so that the constant temperature control is realized.
One end of the first temperature sensor T1 is connected with the heater 7, and the other end is connected with the temperature control module 8, and is used for monitoring the temperature of the heater 7.
One end of the third temperature sensor T3 is connected between the water pump 1 and the motor controller 10, and the other end of the third temperature sensor T3 is connected with the temperature control module 8 and used for monitoring the temperature of a pipeline between the water pump 1 and the motor controller 10.
In this embodiment, the test platform further comprises an electronic valve E1, a first flow meter M1, and a second flow meter M2, the electronic valve E1 is connected between the motor 9 and the heat exchanger 6, the electronic valve E1 is connected to the flow control module 3, one end of the first flowmeter M1 is connected to the flow control module 3, and the other end is connected between the motor controller 10 and the water pump 1, one end of the second flow meter M2 is connected with the flow control module 3, the other end is connected between the motor 9 and the heat exchanger 6, the flow rate of the cooling liquid into the motor 9 and the motor controller 10 is regulated by the electronic valve E1, the flow control module 3 is used for adjusting the flow of the cooling liquid in the test platform according to the signals of the first flow meter M1 and the second flow meter M2.
In this embodiment, the testing platform further includes a second valve S2, the second valve S2 is connected to the heat exchanger 6, the second valve S2 is connected to the outlet, and the second valve S2 is used for relieving pressure of the pipeline in the testing platform, so as to prevent the pressure of the cooling liquid from being too high during the testing process.
In this embodiment, the testing platform further includes a first pressure sensor P1, a second pressure sensor P2, a third pressure sensor P3 and a fourth pressure sensor P4, the first pressure sensor P1 is disposed at the outlet of the testing platform, the first pressure sensor P1 is connected to the heat exchanger 6, the second pressure sensor P2 is connected between the water pump 1 and the motor controller 10, the third pressure sensor P3 is disposed at the inlet of the testing platform, the third pressure sensor P3 is connected to the filter 5, and the fourth pressure sensor P4 is disposed between the heat exchanger 6 and the motor 9. And four pressure sensors are arranged for monitoring the pressure in the test platform.
The way of testing the performance parameters of the motor 9 and the motor controller 10 at different flow rates by changing the flow rate of the test platform in this embodiment is as follows:
the upper computer 4 is used for setting a target value of the temperature of the cooling liquid in the test platform, adjusting the pressure of the cooling liquid to a pressure target value by adjusting the opening degrees of the second valve S2 and the third valve S3, receiving a temperature set value signal of the electronic control unit 2 by combining the temperature control module 8, controlling the heater 7 to work to enable the cooling liquid to reach the temperature set value, adjusting the opening degree of the first three-way electronic valve ES1 in the test process, controlling the proportion of high and low cooling liquid entering a backflow circulation loop to realize the constancy of the temperature set value, setting different flow values by the upper computer 4, receiving a control signal of the electronic control unit 2 by the flow control module 3, controlling the opening degree of the electronic valve E1, and controlling the flow rate of the cooling liquid entering the motor 9 and the motor controller 10 in the control loop, to test the performance parameters of the motor 9 and the motor controller 10 at different flow rates.
The test platform of this embodiment is through the mode that changes the temperature rise and the efficiency of motor 9 under the different flow of temperature size test:
the upper computer 4 is used for setting a target value of the flow of the cooling liquid in a pipeline of the test platform, adjusting the pressure of the cooling liquid to a pressure target value by adjusting the opening degrees of the second valve S2 and the third valve S3, receiving a control signal of the electronic control unit 2 by the flow control module 3, controlling the opening degree of the electronic valve E1, controlling the flow of the cooling liquid entering the motor 9 and the motor controller 10 in a control loop, setting different temperature values by the upper computer 4, receiving a temperature set value signal of the electronic control unit 2 by combining the temperature control module 8, controlling the heater 7 to work, enabling the cooling liquid to reach a temperature set value, adjusting the opening degree of the first three-way electronic valve ES1 in the test process, controlling the proportion of the high-low cooling liquid entering a backflow circulation loop, and realizing the constancy of the temperature set value, to test the temperature rise and efficiency of the motor 9 at different flow rates.
The test platform of this embodiment tests the performance parameters of the motor 9 and the motor controller 10 at different flow rates by changing the pressure:
the upper computer 4 sets target values of flow and temperature of cooling liquid in a pipeline of a test platform, the upper computer is combined with the temperature control module 8 to receive a temperature set value signal of the electronic control unit 2, the heater 7 is controlled to work, the cooling liquid reaches a temperature set value, the opening degree of the first three-way electronic valve ES1 is adjusted in the test process, the proportion of the high-low cooling liquid entering a backflow circulation loop is controlled, the temperature set value is constant, the flow control module 3 receives a control signal of the electronic control unit 2 to control the opening degree of the electronic valve E1, the flow of the cooling liquid entering the motor 9 and the motor controller 10 in the control loop is controlled, the opening degrees of the second valve S2 and the third valve S3 are adjusted to set different pressures, and when all set parameters reach a stable state, the performance parameters of the motor 9 and the motor controller 10 at different pressures were tested.
Through the test method, the performance of the electric drive system can be tested by a method of simultaneously controlling a single variable and changing parameter values of other two variables. Through an optimization design method, uniform design and optimization of test parameters, the optimal combination of flow, temperature and pressure under the performance parameters of motor temperature rise, efficiency and the like is selected.
In addition, the test platform of this embodiment has an RS232 communication interface, and communicates with the control system through the RS232 communication interface, and automatic control and test are realized through the control system. The control system may be an industrial computer.
According to the thermal management system test platform of the electric drive system provided by the embodiment, the thermal management effect in the development process of the electric drive system can be tested, the thermal management system of the electric drive system can be optimized, the performance of the electric drive system can be effectively improved and promoted, the influence of a single factor on the performance parameters of the electric drive system can be tested through the mutual matching of the temperature control module, the flow control module and the pressure control system, the influence of multiple factors on the performance parameters of the electric drive system can be tested, the cooling/heating and temperature control, flow regulation and pressure regulation functions of cooling liquid of the electric drive system can be realized, the performance of the electric drive system under different pressures, temperatures and flows of the cooling liquid can be tested, the development guarantee is provided for the electric drive system, and the high-temperature cooling liquid at the outlet of the motor can be controlled to enter a circulation system in a motor and motor controller loop through the temperature The proportion of the system is reduced, the energy required by the heater/heat exchanger for heating or cooling the cooling liquid is saved, and the test cost is low.
The above-mentioned embodiments only express several embodiments of the present invention, and the description thereof is more specific and detailed, but not construed as limiting the scope of the present invention. It should be noted that, for a person skilled in the art, several variations and modifications can be made without departing from the inventive concept, which falls within the scope of the present invention. Therefore, the protection scope of the present patent shall be subject to the appended claims.
In the description herein, references to the description of the term "one embodiment," "some embodiments," "an example," "a specific example," or "some examples," etc., mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.
The above-mentioned embodiments only express several embodiments of the present invention, and the description thereof is more specific and detailed, but not construed as limiting the scope of the present invention. It should be noted that, for a person skilled in the art, several variations and modifications can be made without departing from the inventive concept, which falls within the scope of the present invention. Therefore, the protection scope of the present patent shall be subject to the appended claims.
Claims (10)
1. The utility model provides a thermal management system test platform of electric drive system, its characterized in that includes water pump, electronic control unit, flow control module, host computer, filter, heat exchanger, heater, temperature control module, motor controller, dynamometer machine, first tee bend electronic valve, second tee bend electronic valve, first valve, third valve, the water pump the heater, heat exchanger is circulation connection in proper order, motor controller with the water pump, the motor with the host computer is connected, the motor with heat exchanger with the dynamometer machine is connected, first tee bend electronic valve with the water pump, motor controller with the motor with the tie point of heat exchanger is connected, second tee bend electronic valve with heat exchanger, the heater with the motor is connected, temperature control module with first tee bend electronic valve, The second three-way electronic valve, the heater and the electronic control unit are connected, the electronic control unit is connected with the flow control module and the upper computer, the upper computer is connected with the motor controller and the motor, the third valve is connected with the filter, the third valve is used for adjusting the pressure of the cooling liquid entering the test platform, the upper computer is used for setting target values of the pressure, the temperature and the flow of the cooling liquid, the cooling liquid enters the test platform from the first valve, the heat exchanger, the temperature control module, the first three-way electronic valve and the second three-way electronic valve jointly realize temperature control, the test platform further comprises an electronic valve, the electronic valve is connected between the motor and the heat exchanger and is connected with the flow control module, the flow of coolant into the motor and motor controller is regulated by the electronic valve.
2. The thermal management system test platform of the electric drive system according to claim 1, further comprising a second temperature sensor, wherein one end of the second temperature sensor is connected to the temperature control module, and the other end of the second temperature sensor is connected between the heat exchanger and the motor, the second temperature sensor changes the opening of the second three-way electronic valve through the temperature control module, and after the cooling liquid passes through the motor and the motor controller, two loops are formed, and one loop passes through the heat exchanger to become the low-temperature cooling liquid; and the other path of the high-temperature cooling liquid directly flows back through the first three-way electronic regulating valve to form high-temperature cooling liquid, and the first three-way electronic regulating valve regulates the proportion of the high-temperature cooling liquid flowing back to the motor according to the set temperature to realize the control of constant temperature.
3. The thermal management system test platform of an electric drive system of claim 2, further comprising a first temperature sensor and a third temperature sensor, wherein one end of the first temperature sensor is connected to the heater and the other end is connected to the temperature control module, and wherein one end of the third temperature sensor is connected between the water pump and the motor controller and the other end is connected to the temperature control module.
4. The thermal management system test platform of an electric drive system according to claim 1, wherein the test platform comprises a first flow meter and a second flow meter, one end of the first flow meter is connected with the flow control module, the other end of the first flow meter is connected between the motor controller and the water pump, one end of the second flow meter is connected with the flow control module, the other end of the second flow meter is connected between the motor and the heat exchanger, and the flow control module is used for adjusting the flow of the cooling liquid in the test platform according to signals of the first flow meter and the second flow meter.
5. The thermal management system test platform of an electric drive system of claim 4, further comprising a second valve coupled to the heat exchanger and coupled to the outlet, the second valve configured to vent the tubing in the test platform to prevent excess coolant pressure during testing.
6. The thermal management system test platform of the electric drive system of claim 1, further comprising a first pressure sensor disposed at an outlet of the test platform and coupled to the heat exchanger, a second pressure sensor coupled between the water pump and the motor controller, a third pressure sensor disposed at an inlet of the test platform and coupled to the filter, and a fourth pressure sensor disposed between the heat exchanger and the motor.
7. The thermal management system test platform of the electric drive system of claim 5, wherein the test platform tests the performance parameters of the motor and the motor controller at different flow rates by changing the flow rate size by:
the upper computer is used for setting a target value of the temperature of the cooling liquid in the test platform, the pressure of the cooling liquid is adjusted to a pressure target value by adjusting the opening degrees of the second valve and the third valve, and the temperature control module is combined to receive a temperature set value signal of the electronic control unit and control the heater to work so as to enable the cooling liquid to reach a temperature set value, and the opening degree of the first three-way electronic valve is adjusted in the test process, the proportion of high and low cooling liquid entering the reflux circulation loop is controlled to realize the constancy of the temperature set value, different flow values are set through the upper computer, the flow control module receives control signals of the electronic control unit, the opening of the electronic valve is controlled, and the flow of cooling liquid entering the motor and the motor controller in a control loop is controlled, so that performance parameters of the motor and the motor controller under different flows are tested.
8. The thermal management system test platform of an electric drive system according to claim 5, wherein the test platform tests the temperature rise and efficiency of the motor at different flow rates by changing the temperature:
the upper computer is used for setting a target value of the flow of the cooling liquid in the pipeline of the test platform, the opening degrees of the second valve and the third valve are adjusted to adjust the pressure of the cooling liquid to a pressure target value, meanwhile, the flow control module receives a control signal of the electronic control unit, controls the opening of the electronic valve, controls the flow of the cooling liquid entering the motor and the motor controller in a loop, different temperature values are set by the upper computer, the upper computer is combined with the temperature control module to receive a temperature set value signal of the electronic control unit and control the heater to work so that the cooling liquid reaches a temperature set value, and the opening of the first three-way electronic valve is adjusted in the test process, the proportion of high and low cooling liquid entering the reflux circulation loop is controlled, the constancy of a temperature set value is realized, and the temperature rise and the efficiency of the motor under different flow rates are tested.
9. The thermal management system test platform of an electric drive system according to claim 5, wherein the test platform tests performance parameters of the motor and the motor controller at different flow rates by changing the pressure magnitude:
the upper computer sets the target values of the flow and the temperature of the cooling liquid in the pipeline of the test platform, and the upper computer is combined with the temperature control module to receive the temperature set value signal of the electronic control unit to control the heater to work so that the cooling liquid reaches the temperature set value, and the opening degree of the first three-way electronic valve is adjusted in the test process, the proportion of high and low cooling liquid entering the reflux circulation loop is controlled to realize the constancy of the temperature set value, the flow control module receives the control signal of the electronic control unit, controls the opening of the electronic valve, controls the flow of the cooling liquid entering the motor and the motor controller in a loop, the opening degrees of the second valve and the third valve are adjusted to set different pressures, and when all the set parameters reach a stable state, testing the performance parameters of the motor and the motor controller under different pressures.
10. The thermal management system test platform of an electric drive system of claim 1, wherein the test platform has an RS232 communication interface through which to communicate with a control system through which to implement automated control and testing.
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| CN201810594817.4A CN108776025B (en) | 2018-06-11 | 2018-06-11 | Thermal management system test platform of electric drive system |
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| CN113029549A (en) * | 2021-04-29 | 2021-06-25 | 重庆长安新能源汽车科技有限公司 | New energy automobile thermal management system test device |
| CN113851674A (en) * | 2021-09-28 | 2021-12-28 | 上海捷氢科技有限公司 | Thermal management system for testing fuel cell system |
| CN113984316B (en) * | 2021-12-24 | 2022-04-05 | 苏州英特模汽车科技有限公司 | Automobile part pressure pulsation test device |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| JP2011145126A (en) * | 2010-01-13 | 2011-07-28 | Sumitomo Chemical Co Ltd | Abnormality detection method of heat exchange process |
| US9217690B2 (en) * | 2012-01-25 | 2015-12-22 | GM Global Technology Operations LLC | Coolant loss detection and remediation in a liquid cooled battery pack |
| JP5862460B2 (en) * | 2012-05-31 | 2016-02-16 | 三菱電機株式会社 | Air conditioner |
| US10449830B2 (en) * | 2013-06-04 | 2019-10-22 | Denso Corporation | Vehicular heat management system |
| CN205930310U (en) * | 2016-05-10 | 2017-02-08 | 比亚迪股份有限公司 | Electric automobile thermal management system and electric automobile |
| CN106335340A (en) * | 2016-08-29 | 2017-01-18 | 博耐尔汽车电气系统有限公司 | Heat pump automobile air conditioner |
| KR101866523B1 (en) * | 2016-09-30 | 2018-06-12 | (주)선두솔루션 | Testing device and the method thereof that the water's temperature change having gradient to time can be carried out |
| CN207045140U (en) * | 2017-04-25 | 2018-02-27 | 上海思致汽车工程技术有限公司 | A kind of intelligent multiloop thermal management system of electric automobile |
| CN107298001A (en) * | 2017-06-30 | 2017-10-27 | 浙江合众新能源汽车有限公司 | A kind of thermal management system of whole pure electric vehicle and control method |
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