CN106249070B - System and method for testing electric vehicle heat management pipeline - Google Patents
System and method for testing electric vehicle heat management pipeline Download PDFInfo
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- CN106249070B CN106249070B CN201610545918.3A CN201610545918A CN106249070B CN 106249070 B CN106249070 B CN 106249070B CN 201610545918 A CN201610545918 A CN 201610545918A CN 106249070 B CN106249070 B CN 106249070B
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- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R31/00—Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
Abstract
The embodiment of the invention discloses a system and a method for testing a thermal management pipeline of an electric automobile. The test system comprises a first test device, a second test device and a first actuator, wherein: first testing means for generating a first analog sensing signal based on a first sensing quantity input value; the second testing device is connected with the first testing device and the first actuator and used for generating a first simulation control instruction for controlling the first actuator based on the first simulation sensing signal and sending the first simulation control instruction to the first actuator; and the first actuator is used for executing the first simulation control command. By applying the embodiment of the invention, the control test can be carried out on the pipeline without a sensor and a controller, thereby saving the test time and promoting the development progress of the finished automobile product.
Description
Technical Field
The invention relates to the technical field of automobiles, in particular to a system and a method for testing a thermal management pipeline of an electric automobile.
Background
The shortage of energy, the petroleum crisis and the environmental pollution are getting more and more severe, which brings great influence to the life of people and is directly related to the sustainable development of national economy and society. New energy technologies are actively developed in all countries of the world. An electric vehicle is considered as an important approach to solve energy crisis and environmental deterioration as a new energy vehicle with reduced oil consumption, low pollution and low noise. The hybrid electric vehicle has the advantages of both a pure electric vehicle and a traditional internal combustion engine vehicle, effectively improves fuel economy and reduces emission on the premise of meeting the requirements of vehicle dynamic property and driving range, and is considered to be one of the effective paths of energy conservation and emission reduction at present.
Thermal management circuits used in electric vehicle applications typically contain sensors, actuators, and controllers. The controller controls the actuator of the thermal management pipeline according to the sensing signal provided by the sensor.
In the prior art, in order to test whether a controller can control an actuator of a thermal management pipeline, various types of sensor products and developed controller products are generally selected to perform control tests on the pipeline. However, since the development cycle of the controller is long, the developed and molded controller product is used for executing the test, so that the test time is long, and the development progress of the whole vehicle product is not facilitated. Moreover, the variety of sensors used in pipeline testing is large, which also results in lengthy and costly testing if a real sensor product is used to perform the test.
Disclosure of Invention
The invention aims to provide a system and a method for testing a thermal management pipeline of an electric automobile, so that the testing time is saved, the cost is reduced, and the development progress of a finished automobile product is promoted.
The technical scheme of the embodiment of the invention is as follows:
the utility model provides a test system of electric automobile thermal management pipeline, includes first testing arrangement, second testing arrangement and first executor, wherein:
first testing means for generating a first analog sensing signal based on a first sensing quantity input value;
the second testing device is connected with the first testing device and the first actuator and used for generating a first simulation control instruction for controlling the first actuator based on the first simulation sensing signal and sending the first simulation control instruction to the first actuator;
and the first actuator is used for executing the first simulation control command.
In one embodiment, a second actuator is also included;
the second testing device is further connected with the second actuator and is also used for generating a second simulation control instruction for controlling the second actuator based on the first simulation sensing signal and sending the second simulation control instruction to the second actuator;
and the second actuator is used for executing the second simulation control command.
In one embodiment, a third actuator is also included;
the second testing device is further connected with the third actuator and is also used for generating a third simulation control instruction for controlling the third actuator based on the first simulation sensing signal and sending the third simulation control instruction to the third actuator;
and the third actuator is used for executing the third simulation control command.
In one embodiment, the first actuator is a water pump of an electric vehicle thermal management pipeline, the second actuator is an electromagnetic valve of the electric vehicle thermal management pipeline, and the third actuator is a cooling fan of the electric vehicle thermal management pipeline;
the first sensing quantity input value is a temperature input value;
the first analog sensing signal is a temperature analog signal in a thermal management pipeline of the electric automobile;
the first analog control instruction is a water pump starting instruction;
the second analog control instruction is an electromagnetic valve opening instruction;
the third analog control instruction is a cooling fan starting instruction.
In one embodiment, the first actuator is a water pump of an electric vehicle thermal management pipeline, the second actuator is an electromagnetic valve of the electric vehicle thermal management pipeline, and the third actuator is a cooling fan of the electric vehicle thermal management pipeline;
the first sensing quantity input value is a flow input value;
the first analog sensing signal is a flow analog signal in a thermal management pipeline of the electric automobile;
the first analog control instruction is a water pump stopping instruction;
the second analog control instruction is an electromagnetic valve closing instruction;
the third analog control command is a radiator fan stop command.
In one embodiment, further comprising:
third testing means for generating a second analog sensing signal based on the second sensing quantity input value;
and the controller is also connected with a third testing device and used for generating the first analog control instruction based on the first analog sensing signal and the second analog sensing signal.
In one embodiment, the first testing device comprises:
an input semaphore module for receiving a first sensing input value;
the analog module is used for converting a first sensing quantity input value into an analog voltage signal and digitally converting the analog voltage signal into a digital voltage signal serving as the first analog sensing signal;
and the output port is used for outputting the first analog sensing signal to a second testing device.
In one embodiment, the second testing device comprises:
the sensing signal receiving module is used for receiving the first analog sensing signal;
the control instruction generation module is used for storing preset logic for generating an analog control instruction based on a sensing signal, generating a first analog control instruction based on the first analog sensing signal by using the preset logic and packaging the format of the first analog control instruction to be compatible with the first actuator;
and the output port is used for outputting the packaged first analog control instruction to the first actuator.
A test method of an electric vehicle thermal management pipeline comprises the following steps:
the first test device generates a first analog sensing signal based on the first sensing quantity input value and sends the first analog sensing signal to the second test device;
the second testing device generates a first simulation control instruction for controlling the first actuator based on the first simulation sensing signal and sends the first simulation control instruction to the first actuator;
and the first actuator executes the first simulation control command.
In one embodiment, further comprising:
the second testing device generates a second analog control instruction for controlling the second actuator and a third analog control instruction for controlling the third actuator based on the first analog sensing signal, and sends the second analog control instruction to the second actuator and the third analog control instruction to the third actuator,
a second actuator executes the second analog control command, and a third actuator executes the third analog control command;
wherein: the first sensing quantity input value is a temperature input value, the first analog sensing signal is a temperature analog signal in a heat management pipeline of the electric automobile, the first actuator is a water pump, the second actuator is an electromagnetic valve, the third actuator is a cooling fan, the first analog control instruction is a water pump opening instruction, the second analog control instruction is an electromagnetic valve opening instruction, and the third analog control instruction is a cooling fan starting instruction; or the first sensing quantity input value is a flow input value, the first analog sensing signal is a flow analog signal in a thermal management pipeline of the electric vehicle, the first actuator is a water pump of the thermal management pipeline of the electric vehicle, the second actuator is an electromagnetic valve of the thermal management pipeline of the electric vehicle, the third actuator is a cooling fan of the thermal management pipeline of the electric vehicle, the first analog control instruction is a water pump stop instruction, and the second analog control instruction is an electromagnetic valve close instruction; the third analog control command is a radiator fan stop command.
As can be seen from the above technical solutions, in an embodiment of the present invention, a test system includes a first test device, a second test device, and a first actuator, wherein: first testing means for generating a first analog sensing signal based on a first sensing quantity input value; the second testing device is connected with the first testing device and the first actuator and used for generating a first simulation control instruction for controlling the first actuator based on the first simulation sensing signal and sending the first simulation control instruction to the first actuator; and the first actuator is used for executing the first simulation control command. By applying the embodiment of the invention, the control test can be carried out on the pipeline without a sensor and a controller, thereby saving the test time and promoting the development progress of the finished automobile product.
In addition, the embodiment of the invention can simulate the environment of the thermal management system by simulating the sensor signal, can realize control function tests under different environmental conditions in a normal temperature environment, can also reduce the time for using the environmental chamber and achieves the effect of saving the cost.
Drawings
The following drawings are only schematic illustrations and explanations of the present invention, and do not limit the scope of the present invention.
Fig. 1 is a structural diagram of a test system of a thermal management pipeline of an electric vehicle in the prior art.
Fig. 2 is a structural diagram of a test system of an electric vehicle thermal management pipeline according to the invention.
FIG. 3 is an exemplary block diagram of a test system for an electric vehicle thermal management pipeline according to the present invention.
Fig. 4 is a structural view of a first test apparatus according to the present invention.
Fig. 5 is a structural view of a second test apparatus according to the present invention.
FIG. 6 is a flowchart of a method for testing a thermal management pipeline of an electric vehicle according to the present invention.
Detailed Description
In order to more clearly understand the technical features, objects, and effects of the present invention, embodiments of the present invention will now be described with reference to the accompanying drawings, in which like reference numerals refer to like parts throughout.
For simplicity and clarity of description, the invention will be described below by describing several representative embodiments. Numerous details of the embodiments are set forth to provide an understanding of the principles of the invention. It will be apparent, however, that the invention may be practiced without these specific details. Some embodiments are not described in detail, but rather are merely provided as frameworks, in order to avoid unnecessarily obscuring aspects of the invention. Hereinafter, "including" means "including but not limited to", "according to … …" means "at least according to … …, but not limited to … … only". In view of the language convention of chinese, the following description, when it does not specifically state the number of a component, means that the component may be one or more, or may be understood as at least one.
Fig. 1 is a structural diagram of a test system of a thermal management pipeline of an electric vehicle in the prior art.
As can be seen from FIG. 1, the testing system for the thermal management pipeline of the electric vehicle in the prior art comprises a plurality of sensors, a plurality of actuators and a thermal management system controller. And the thermal management system controller controls each actuator of the thermal management pipeline according to the sensing signals provided by each sensor.
However, since the development period of the controller is long, if a real mature controller is used for executing the test, the test time is shortened, and the development progress of the whole vehicle product is not facilitated.
Furthermore, there is a need in the art to select various types of sensor products for performing control tests on pipelines. However, due to the variety of sensors used for testing, if a real sensor product is used for testing, the testing time is long, the cost is high, and the development progress of the whole vehicle product is not facilitated.
In addition, when a real sensor is used for testing, expensive equipment such as an environmental chamber is used, and the cost is further increased.
In fact, the purpose of the test is to verify that the circuit is working properly and that the actuator is working properly. The sensor in the pipeline test is used for generating a sensing signal for the controller to generate a control command, and the controller in the pipeline test is used for generating the control command for controlling the actuator. Therefore, the sensor and the controller can be simulated, whether the pipeline works normally or not and whether the actuator works normally or not can be verified, and the aim of testing the pipeline is fulfilled.
The embodiment of the invention adopts the simulated sensing signals, can conveniently provide various types of sensing signals, can save the cost of the sensor and save the test time, and can also save valuable equipment such as an environmental chamber and the like. Furthermore, in embodiments of the present invention, the actuator may be tested without the use of a controller.
Fig. 2 is a structural diagram of a test system of an electric vehicle thermal management pipeline according to the invention.
As shown in fig. 2, the system 200 includes: comprising a first testing device 201, a second testing device 202 and a first actuator 203, wherein:
a first testing means 201 for generating a first analog sensing signal based on a first sensing quantity input value;
the second testing device 202 is connected with the first testing device 201 and the first actuator 203, and is used for generating a first analog control command for controlling the first actuator based on the first analog sensing signal and sending the first analog control command to the first actuator 203;
and the first actuator 203 is used for executing the first simulation control command.
In this embodiment, the actuator comprises only the first actuator 203.
The test person enters a first sensor input value on the first test device 201, and the first test device 201 generates a first analog sensor signal based on the first sensor input value. Specifically, the first testing device 201 receives a first sensing input value input by a human detector, converts the first sensing input value into an analog voltage signal, digitally converts the analog voltage signal into a digital voltage signal as a first analog sensing signal, and outputs the digital voltage signal as the first analog sensing signal to the second testing device 202.
The second testing device 202 generates a first analog control command for controlling the first actuator 203 based on the first analog sensing signal. Specifically, the second testing device 202 holds predetermined logic that generates control instructions based on the sensing signals. The second testing device 202 receives the first analog sensing signal. The second testing device 202 generates a first analog control command based on the first sensing signal by using the predetermined logic, packages the format of the first analog control command to be compatible with the first actuator 203, and outputs the packaged first analog control command to the first actuator 203.
The inspector can inspect whether the thermal management pipeline (for example, the pipeline between the first testing device 201 (replaced by the real sensor after inspection) and the second testing device 202 (replaced by the real controller after inspection) and the pipeline between the second testing device 202 (replaced by the real controller after inspection) and the first actuator 203) is working normally by observing whether the first actuator 203 executes the first simulation control command correctly. When the first actuator 203 correctly executes the first control command, the thermal management pipeline is determined to pass the test. When the first actuator 203 cannot correctly execute the first control command, the thermal management pipeline test is determined not to pass.
It can be seen that the first testing device 201 can simulate a sensor of the thermal management system and the second testing device 202 simulates a controller. After the embodiment of the invention is applied, real sensing equipment and a controller are not adopted, and valuable equipment such as an environmental chamber and the like is not used.
In one embodiment, the system 200 further comprises a second actuator 203;
the second testing device 202 is further connected with the second actuator 203, and is further configured to generate a second analog control command for controlling the second actuator 203 based on the first analog sensing signal, and send the second analog control command to the second actuator 203;
and the second actuator 203 is used for executing a second simulation control command.
In this embodiment, the actuators include a first actuator 203 and a second actuator 204.
First, the inspector inputs a first sensing value input into the first testing device 201, and the first testing device 201 generates a first analog sensing signal based on the first sensing value input. Specifically, the first testing device 201 receives a first sensing input value input by a human detector, converts the first sensing input value into an analog voltage signal, digitally converts the analog voltage signal into a digital voltage signal as a first analog sensing signal, and outputs the digital voltage signal as the first analog sensing signal to the second testing device 202.
The second testing device 202 generates a first analog control command for controlling the first actuator 203 based on the first analog sensor signal and a second analog control command for controlling the second actuator 204 based on the first analog sensor signal. Specifically, the second testing device 202 holds predetermined logic that generates control instructions based on the sensing signals. The second testing device 202 receives the first analog sensing signal. The second testing device 202 generates a first analog control command based on the first sensing signal by using the predetermined logic, packages the format of the first analog control command to be compatible with the first actuator 203, and outputs the packaged first analog control command to the first actuator 203. The second testing device 202 further generates a second analog control command based on the first sensing signal by using the predetermined logic, packages the format of the second analog control command to be compatible with the second actuator 204, and outputs the packaged second analog control command to the second actuator 204.
The inspector can inspect whether the thermal management pipeline (for example, the pipeline between the first testing device 201 (replaced by the real sensor after inspection) and the second testing device 202 (replaced by the real controller after inspection) and the pipeline between the second testing device 202 (replaced by the real controller after inspection) and the first actuator 203) works normally by observing whether the first actuator 203 executes the first simulation control command correctly. Wherein, when the first actuator 203 correctly executes the first simulation control command, the test of the detection thermal management pipeline reaching the first actuator 203 is determined to pass. When the first actuator 203 fails to properly execute the first simulated control command, the test thermal management pipeline test to the first actuator 203 is deemed to fail. Moreover, the inspector can inspect whether the thermal management pipeline (for example, the pipeline between the first testing device 201 (replaced by the real sensor after inspection) and the second testing device 202 (replaced by the real controller after inspection) and the pipeline between the second testing device 202 (replaced by the real controller after inspection) and the second actuator 204) is working normally by observing whether the second actuator 204 executes the second simulation control command correctly. Wherein, when the second actuator 204 correctly executes the second simulation control command, the test of the detected thermal management pipeline reaching the second actuator 204 is determined to pass. When the second actuator 204 fails to properly execute the second simulated control command, the test thermal management circuit test to the second actuator 204 is deemed to fail.
In one embodiment, the system 200 further includes a third actuator 205;
the second testing device 202 is further connected to the third actuator 205, and is further configured to generate a third analog control command for controlling the third actuator 205 based on the first analog sensing signal, and send the third analog control command to the third actuator 205;
and a third actuator 205 for executing a third analog control command.
In this embodiment, the actuators include a first actuator 203, a second actuator 204, and a third actuator 205.
First, the inspector inputs a first sensing value input into the first testing device 201, and the first testing device 201 generates a first analog sensing signal based on the first sensing value input. Specifically, the first testing device 201 receives a first sensing input value input by a human detector, converts the first sensing input value into an analog voltage signal, digitally converts the analog voltage signal into a digital voltage signal as a first analog sensing signal, and outputs the digital voltage signal as the first analog sensing signal to the second testing device 202.
The second testing device 202 generates a first analog control command for controlling the first actuator 203 based on the first analog sensor signal, and generates a second analog control command for controlling the second actuator 204 based on the first analog sensor signal, and generates a third analog control command for controlling the third actuator 205 based on the first analog sensor signal. Specifically, the second testing device 202 holds predetermined logic that generates control instructions based on the sensing signals. The second testing device 202 receives the first analog sensing signal. The second testing device 202 generates a first analog control command based on the first sensing signal by using the predetermined logic, packages the format of the first analog control command to be compatible with the first actuator 203, and outputs the packaged first analog control command to the first actuator 203. The second testing device 202 further generates a second analog control command based on the first sensing signal by using the predetermined logic, packages the format of the second analog control command to be compatible with the second actuator 204, and outputs the packaged second analog control command to the second actuator 204. The second testing device 202 further generates a third analog control command based on the first sensing signal by using the predetermined logic, packages the format of the third analog control command to be compatible with the third actuator 205, and outputs the packaged third analog control command to the third actuator 205.
The inspector can inspect whether the thermal management pipeline (for example, the pipeline between the first testing device 201 (replaced by the real sensor after inspection) and the second testing device 202 (replaced by the real controller after inspection) and the pipeline between the second testing device 202 (replaced by the real controller after inspection) and the first actuator 203) is working normally by observing whether the first actuator 203 executes the first simulation control command correctly. Wherein, when the first actuator 203 correctly executes the first simulation control command, the test of the detection thermal management pipeline reaching the first actuator 203 is determined to pass. When the first actuator 203 fails to properly execute the first simulated control command, the test thermal management pipeline test to the first actuator 203 is deemed to fail. Moreover, the inspector can inspect whether the thermal management pipeline (for example, the pipeline between the first testing device 201 (replaced by the real sensor after inspection) and the second testing device 202 (replaced by the real controller after inspection) and the pipeline between the second testing device 202 (replaced by the real controller after inspection) and the second actuator 204) is working normally by observing whether the second actuator 204 executes the second simulation control command correctly. Wherein, when the second actuator 204 correctly executes the second simulation control command, the test of the detected thermal management pipeline reaching the second actuator 204 is determined to pass. When the second actuator 204 fails to properly execute the second simulated control command, the test thermal management circuit test to the second actuator 204 is deemed to fail. Moreover, the inspector can inspect whether the thermal management pipeline (for example, the pipeline between the first testing device 201 (replaced with the real sensor after inspection) and the second testing device 202 (replaced with the real controller after inspection) and the pipeline between the second testing device 202 (replaced with the real controller after inspection) and the third actuator 205) is working normally by observing whether the third actuator 205 executes the third simulation control command correctly. Wherein a test of the detected thermal management circuit to third actuator 205 is deemed to have passed when third actuator 205 correctly executes the third control command. When the third actuator 205 is unable to properly execute the third simulated control command, the test thermal management circuit to the third actuator 205 is deemed to fail.
While a representative example having three actuators is described above in detail, one skilled in the art will recognize that embodiments of the present invention may include more actuators, and embodiments of the present invention are not limited thereto.
In one embodiment, the first testing device 201 is used for simulating a temperature sensor, the first actuator 203 is a water pump of an electric vehicle thermal management pipeline, the second actuator is an electromagnetic valve 204 of the electric vehicle thermal management pipeline, and the third actuator 205 is a cooling fan of the electric vehicle thermal management pipeline; the first analog sensing signal is a temperature analog signal in a thermal management pipeline of the electric automobile; the first analog control instruction is a water pump starting instruction; the second analog control instruction is an electromagnetic valve opening instruction; the third analog control command is a cooling fan starting command.
For example, the first testing device 201 receives a first temperature input value (e.g., 35 degrees celsius) manually input by a user, converts the first temperature input value into an analog voltage signal, and digitally converts the analog voltage signal into a digital voltage signal as a temperature analog signal. Then, the first test apparatus 201 outputs the temperature analog signal to the second test apparatus 202 interface.
The second test apparatus 202 has processing logic stored therein in advance as follows: when the temperature is higher than a preset threshold value (for example, 30 ℃), a water pump opening instruction, an electromagnetic valve opening instruction and a cooling fan starting instruction are respectively generated. When the temperature is lower than a preset threshold value (such as 30 degrees centigrade), no instruction is generated. In this example, since the temperature analog signal is greater than 30 degrees, the second testing device 202 generates a water pump opening command, an electromagnetic valve opening command, and a radiator fan starting command, respectively.
Moreover, the second testing device 202 sends a water pump opening instruction to the water pump, an electromagnetic valve opening instruction to the electromagnetic valve, and a cooling fan starting instruction to the cooling fan. Then, the observer observes the performance of the water pump, the electromagnetic valve, and the cooling fan. When the water pump is started smoothly, the water pump is determined to pass the test, and an observer can determine that the water pump is normal and a pipeline reaching the water pump is normal; when the water pump cannot be started smoothly, the water pump test is determined not to pass, and an observer can determine that the water pump is abnormal or a pipeline reaching the water pump is abnormal; when the electromagnetic valve is opened smoothly, the electromagnetic valve is determined to pass the test, an observer can determine that the electromagnetic valve is normal and a pipeline reaching the electromagnetic valve is normal, and when the electromagnetic valve cannot be opened smoothly, the electromagnetic valve is determined not to pass the test, and the observer can determine that the electromagnetic valve or the pipeline reaching the electromagnetic valve is abnormal; when the cooling fan is started smoothly, the cooling fan is determined to pass the test, and an observer can determine that the cooling fan is normal and a pipeline reaching the cooling fan is normal; when the cooling fan can not be started smoothly, the cooling fan is determined not to pass the test, and an observer can determine that the cooling fan or a pipeline reaching the cooling fan is abnormal.
Similarly, when the temperature value of the temperature analog signal needs to be adjusted, the user only needs to manually adjust the first sensor input value on the first testing device 201, and thus the pipeline can be tested without expensive equipment such as an environmental chamber. Similarly, when processing logic needs to be adjusted, the user is only required to manually write the latest processing logic on the second testing device 202, without replacing expensive control equipment.
In one embodiment, the first testing device 201 is used for simulating a flow sensor, the first actuator 203 is a water pump of an electric vehicle thermal management pipeline, the second actuator 204 is an electromagnetic valve of the electric vehicle thermal management pipeline, and the third actuator 205 is a cooling fan of the electric vehicle thermal management pipeline; the first analog sensing signal is a flow analog signal in a thermal management pipeline of the electric automobile; the first analog control instruction is a water pump stop instruction; the second analog control instruction is an electromagnetic valve closing instruction; the third analog control command is a stop command of the heat dissipation fan.
For example, the first testing device 201 receives a first flow input value (for example, 0) manually input by a user, converts the first flow input value into an analog voltage signal, and digitally converts the analog voltage signal into a digital voltage signal as a temperature analog signal. Then, the first testing device 201 outputs a flow rate analog signal to the sensing signal input interface of the controller.
The second test apparatus 202 has processing logic stored therein in advance as follows: and when the flow is zero, respectively generating a water pump stop instruction, an electromagnetic valve closing instruction and a cooling fan stop instruction. When the flow is not zero, no instruction is generated. In this example, since the flow rate is 0, the controller 202 generates a water pump stop command, an electromagnetic valve closing command, and a radiator fan stop command, respectively. Preferably, an interface is arranged at the second testing device 202, through which the processing logic can be flashed.
The second testing device 202 sends a water pump stop command to the water pump, a solenoid valve close command to the solenoid valve, and a radiator fan stop command to the radiator fan. Then, the observer observes the performance of the water pump, the electromagnetic valve, and the cooling fan. When the water pump stops smoothly, the water pump is determined to pass the test, and an observer can determine that the water pump is normal and a pipeline reaching the water pump is normal; when the water pump can not be stopped smoothly, the water pump test is determined not to pass, and observers can determine that the water pump is abnormal or the pipeline reaching the water pump is abnormal. When the electromagnetic valve is successfully closed, the electromagnetic valve is determined to pass the test, and an observer can determine that the electromagnetic valve is normal; when the electromagnetic valve can not be closed smoothly, the electromagnetic valve test is determined not to pass, and an observer can determine that the electromagnetic valve is abnormal or a pipeline reaching the electromagnetic valve is abnormal; when the cooling fan stops smoothly, the cooling fan is determined to pass the test, and an observer can determine that the cooling fan is normal; when the cooling fan can not be stopped smoothly, the cooling fan is determined not to pass the test, and an observer can determine that the cooling fan is abnormal or the pipeline reaching the cooling fan is abnormal.
In one embodiment, further comprising:
third testing means 206 for generating a second analog sensing signal based on the second sensing quantity input value;
the second testing device 202 is further connected to the third testing device 206 for generating the first analog control command based on the first analog sensing signal and the second analog sensing signal.
For example, the first testing device 201 is used for simulating a temperature sensor, the third testing device 206 is used for simulating a flow sensor, and the first actuator 203 is a water pump of a thermal management pipeline of an electric vehicle. When the temperature analog signal provided by the first testing device 201 is lower than a predetermined threshold (for example, 20 degrees) and the flow analog signal provided by the third testing device 206 is lower than a predetermined threshold (for example, the flow is zero), the second testing device 202 generates a water pump stop command.
In one embodiment, further comprising:
a third testing device 207 for generating a third analog sensing signal based on the third sensing quantity input value;
the controller 202 is further connected to the third testing device 207 for generating a first analog control command based on the first analog sensing signal, the second analog sensing signal and the third analog sensing signal.
Fig. 3 is a first exemplary structure diagram of a test system of an electric vehicle thermal management pipeline according to the invention.
In fig. 3, a first testing device simulates sensors and provides respective sensor simulation signals to a second testing device; the second testing device simulates the processor and issues control commands for controlling the actuator based on the sensor simulation signal, so that real sensors and real controllers shown in dashed boxes are not required.
The following specifically describes specific configurations of the first test apparatus and the second test apparatus according to the embodiment of the present invention.
Fig. 4 is a structural view of a first test apparatus according to the present invention.
As shown in fig. 4, the first test apparatus 400 includes:
an input semaphore module 401 for receiving a first sensing quantity input value;
an analog module 402, configured to convert a first sensing quantity input value into an analog voltage signal, and digitally convert the analog voltage signal into a digital voltage signal serving as the first analog sensing signal;
an output port 403 for outputting the first analog sensing signal to a sensing signal input interface of the controller.
Fig. 5 is a structural view of a second test apparatus according to the present invention.
As shown in fig. 5, the second testing apparatus 500 includes:
a sensing signal receiving module 501, configured to receive the first analog sensing signal;
a control command generating module 502, storing predetermined logic for generating an analog control command based on a sensing signal, and configured to generate a first analog control command based on the first analog sensing signal by using the predetermined logic, and package a format of the first analog control command to be compatible with the first actuator;
and an output port 503, configured to output the packaged first analog control command to the first actuator.
Based on the above description, the embodiment of the invention further provides a test method for the electric vehicle thermal management pipeline.
The testing method for the heat management system pipeline at least has the following advantages:
(1) the test method of the embodiment is suitable for testing functions of a heat management system pipeline and a controller of a new energy vehicle, and can shorten a development cycle.
(2) The embodiment of the invention simulates the environment of the thermal management system by simulating the sensor signal, and can realize the test of the control function of the controller under different environmental conditions in the normal temperature environment, thereby reducing the time for using the environmental chamber and achieving the effect of saving the cost.
(3) The embodiment of the invention can save the mature controller by simulating the controller, thereby reducing the cost and accelerating the development progress.
FIG. 6 is a flowchart of a method for testing a thermal management pipeline of an electric vehicle according to the present invention.
As shown in fig. 6, the method includes:
step 601: the first test device generates a first analog sensing signal based on the first sensing quantity input value and transmits the first analog sensing signal to the second test device.
Step 602: the second testing device generates a first analog control command for controlling the first actuator based on the first analog sensing signal and sends the first analog control command to the first actuator.
Step 603: and the first actuator executes the first simulation control command.
In one embodiment, further comprising:
the second testing device generates a second analog control instruction for controlling the second actuator and a third analog control instruction for controlling the third actuator based on the first analog sensing signal, and sends the second analog control instruction to the second actuator and the third analog control instruction to the third actuator,
a second actuator executes the second analog control command, and a third actuator executes the third analog control command;
wherein: the first sensing quantity input value is a temperature input value, the first analog sensing signal is a temperature analog signal in a heat management pipeline of the electric automobile, the first actuator is a water pump, the second actuator is an electromagnetic valve, the third actuator is a cooling fan, the first analog control instruction is a water pump opening instruction, the second analog control instruction is an electromagnetic valve opening instruction, and the third analog control instruction is a cooling fan starting instruction; or the first sensing quantity input value is a flow input value, the first analog sensing signal is a flow analog signal in a thermal management pipeline of the electric vehicle, the first actuator is a water pump of the thermal management pipeline of the electric vehicle, the second actuator is an electromagnetic valve of the thermal management pipeline of the electric vehicle, the third actuator is a cooling fan of the thermal management pipeline of the electric vehicle, the first analog control instruction is a water pump stop instruction, and the second analog control instruction is an electromagnetic valve close instruction; in summary, in an embodiment of the present invention, the test system includes a first sensor, a test device, and a first actuator, wherein: the first sensor is used for detecting a first sensing signal in a thermal management pipeline of the electric automobile; the testing device is connected with the first actuator and the first sensor and used for generating a first control instruction for controlling the first actuator based on the first sensing signal and sending the first control instruction to the first actuator; and the first actuator is used for executing the first control command.
By applying the embodiment of the invention, the control test can be carried out on the pipeline without a sensor and a controller, thereby saving the test time and promoting the development progress of the finished automobile product. In addition, the embodiment of the invention simulates the environment of the thermal management system by simulating the sensor signal, and can realize the test of the control function under different environmental conditions in the normal temperature environment, thereby reducing the time for using the environmental chamber and achieving the effect of saving the cost.
The above-listed detailed description is only a specific description of a possible embodiment of the present invention and is not intended to limit the scope of the present invention, and equivalent embodiments or modifications such as combinations, divisions or repetitions of the features without departing from the technical spirit of the present invention are included in the scope of the present invention.
Claims (10)
1. The utility model provides a test system of electric automobile thermal management pipeline which characterized in that, includes first testing arrangement, second testing arrangement and first executor, wherein:
the first testing device is used for receiving an input first sensing quantity input value, converting the first sensing quantity input value into an analog voltage signal and digitally converting the analog voltage signal into a digital voltage signal serving as a first analog sensing signal;
the second testing device is connected with the first testing device and the first actuator and used for generating a first simulation control instruction for controlling the first actuator based on the first simulation sensing signal and sending the first simulation control instruction to the first actuator;
the first actuator is used for executing the first simulation control command;
when the first actuator correctly executes the first simulation control instruction, the thermal management pipeline is determined to pass the test; and when the first actuator cannot correctly execute the first simulation control command, determining that the thermal management pipeline test does not pass.
2. The system for testing the thermal management pipeline of the electric vehicle of claim 1, further comprising a second actuator;
the second testing device is further connected with the second actuator and is also used for generating a second simulation control instruction for controlling the second actuator based on the first simulation sensing signal and sending the second simulation control instruction to the second actuator;
and the second actuator is used for executing the second simulation control command.
3. The system for testing the thermal management pipeline of the electric vehicle of claim 2, further comprising a third actuator;
the second testing device is further connected with the third actuator and is also used for generating a third simulation control instruction for controlling the third actuator based on the first simulation sensing signal and sending the third simulation control instruction to the third actuator;
and the third actuator is used for executing the third simulation control command.
4. The system for testing the electric vehicle thermal management pipeline according to claim 3, wherein the first actuator is a water pump of the electric vehicle thermal management pipeline, the second actuator is an electromagnetic valve of the electric vehicle thermal management pipeline, and the third actuator is a cooling fan of the electric vehicle thermal management pipeline; the first sensing quantity input value is a temperature input value; the first analog sensing signal is a temperature analog signal in a thermal management pipeline of the electric automobile; the first analog control instruction is a water pump starting instruction; the second analog control instruction is an electromagnetic valve opening instruction; the third analog control instruction is a cooling fan starting instruction.
5. The system for testing the electric vehicle thermal management pipeline according to claim 3, wherein the first actuator is a water pump of the electric vehicle thermal management pipeline, the second actuator is an electromagnetic valve of the electric vehicle thermal management pipeline, and the third actuator is a cooling fan of the electric vehicle thermal management pipeline; the first sensing quantity input value is a flow input value; the first analog sensing signal is a flow analog signal in a thermal management pipeline of the electric automobile; the first analog control instruction is a water pump stopping instruction; the second analog control instruction is an electromagnetic valve closing instruction; the third analog control command is a radiator fan stop command.
6. The system for testing the thermal management pipeline of the electric vehicle according to claim 1, further comprising:
third testing means for generating a second analog sensing signal based on the second sensing quantity input value;
the second testing device is further connected with a third testing device and used for generating the first analog control instruction based on the first analog sensing signal and the second analog sensing signal.
7. The system for testing the electric vehicle thermal management pipeline according to any one of claims 1 to 6, wherein the first testing device comprises:
an input semaphore module for receiving a first sensing input value;
the analog module is used for converting a first sensing quantity input value into an analog voltage signal and digitally converting the analog voltage signal into a digital voltage signal serving as the first analog sensing signal;
and the output port is used for outputting the first analog sensing signal to a second testing device.
8. The system for testing the electric vehicle thermal management pipeline according to any one of claims 1 to 6, wherein the second testing device comprises:
the sensing signal receiving module is used for receiving the first analog sensing signal;
the control instruction generation module is used for storing preset logic for generating an analog control instruction based on a sensing signal, generating a first analog control instruction based on the first analog sensing signal by using the preset logic and packaging the format of the first analog control instruction to be compatible with the first actuator;
and the output port is used for outputting the packaged first analog control instruction to the first actuator.
9. A method for testing a thermal management pipeline of an electric automobile is characterized by comprising the following steps:
the first test device generates a first analog sensing signal based on the first sensing quantity input value and sends the first analog sensing signal to the second test device;
the second testing device generates a first simulation control instruction for controlling the first actuator based on the first simulation sensing signal and sends the first simulation control instruction to the first actuator;
a first actuator executes the first simulation control command;
wherein the first testing device generating the first analog sensing signal based on the first sensing quantity input value includes:
receiving an input first sensing quantity input value;
converting the first sensing quantity input value into an analog voltage signal;
digitally converting the analog voltage signal to a digital voltage signal as a first analog sensing signal;
when the first actuator correctly executes the first simulation control instruction, the thermal management pipeline is determined to pass the test; and when the first actuator cannot correctly execute the first simulation control command, determining that the thermal management pipeline test does not pass.
10. The method for testing the thermal management pipeline of the electric vehicle according to claim 9, further comprising:
the second testing device generates a second analog control instruction for controlling the second actuator and a third analog control instruction for controlling the third actuator based on the first analog sensing signal, and sends the second analog control instruction to the second actuator and the third analog control instruction to the third actuator,
a second actuator executes the second analog control command, and a third actuator executes the third analog control command;
wherein: the first sensing quantity input value is a temperature input value, the first analog sensing signal is a temperature analog signal in a heat management pipeline of the electric automobile, the first actuator is a water pump, the second actuator is an electromagnetic valve, the third actuator is a cooling fan, the first analog control instruction is a water pump opening instruction, the second analog control instruction is an electromagnetic valve opening instruction, and the third analog control instruction is a cooling fan starting instruction; or the first sensing quantity input value is a flow input value, the first analog sensing signal is a flow analog signal in a thermal management pipeline of the electric vehicle, the first actuator is a water pump of the thermal management pipeline of the electric vehicle, the second actuator is an electromagnetic valve of the thermal management pipeline of the electric vehicle, the third actuator is a cooling fan of the thermal management pipeline of the electric vehicle, the first analog control instruction is a water pump stop instruction, and the second analog control instruction is an electromagnetic valve close instruction; the third analog control command is a radiator fan stop command.
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| CN108074466B (en) * | 2018-01-12 | 2020-02-04 | 北京车和家信息技术有限公司 | Simulation method of new energy vehicle thermal management system |
| CN114486283A (en) * | 2022-01-05 | 2022-05-13 | 阿尔特汽车技术股份有限公司 | Method and system for testing heat balance of whole vehicle and test bench |
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