CN118758627B - Light whole vehicle energy flow and multi-physical field integrated test method and system - Google Patents
Light whole vehicle energy flow and multi-physical field integrated test method and system Download PDFInfo
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Abstract
The invention discloses a method and a system for testing energy flow and multi-physical field integration of a light whole vehicle, wherein the light whole vehicle is a new energy vehicle, and a testing environment is a complex mountain working condition of a plateau, and relates to the technical field of performance testing of the new energy vehicle; according to the driving information, a power system energy equation for testing the energy flow of the new energy automobile and a whole automobile heat conduction equation for testing the heat conduction of the new energy automobile are set, wherein the power system energy equation comprises a plurality of physical field functions for testing the influence on the new energy automobile under the condition of multi-physical field coupling.
Description
Technical Field
The invention belongs to the technical field of performance test of new energy automobiles, and particularly relates to a test method and a test system for light whole-vehicle energy flow and multi-physical-field integration.
Background
In the process of developing and industrialization of new energy automobiles at home and abroad, a test evaluation system and technology are always the focus of research of great attention. Among them, developed countries and regions of the automobile industry including the united states, japan, europe, etc., are focusing on new energy automobile development technologies, and are also continuously improving test and evaluation technologies to promote the development of new energy automobile industries. Generally, the conventional test evaluation work is mainly developed around the test contents required by the national standards organization, and mainly relates to the whole vehicle-level test of power performance, economy and the like, and the performance test of key parts of a power battery, a motor and an electric control system.
However, due to the independence and the difference of the whole vehicle and the system/component development verification system, the performance of the whole vehicle often cannot reach the development expectation, i.e. the phenomenon that the excellent system/component is not equal to the excellent whole vehicle exists. On the working condition level, the whole vehicle power economy development verification is based on the whole vehicle driving working condition, such as focusing energy consumption dimension, adopting WLTC, CLTP, NEDC, actual road working conditions and the like. The system/component development verification is based on corresponding national/line/enterprise standards, and is carried out on a single rack/device according to standard agreed working conditions for single/system-level working conditions and target systems such as motor efficiency, transmission efficiency, DC/DC efficiency, battery charging and discharging performance and the like, and is influenced by the working states (such as temperature, pressure, flow, load and the like) of vehicle-mounted components, control strategies, system integration level and the like on a state level, and the performance of the system/component in the whole vehicle integrated state and the single state is greatly different, such as the influence of temperature on battery performance, motor efficiency and transmission efficiency, the influence of low-voltage system power (load rate) on DCDC efficiency and the like.
Aiming at the problems, from the whole vehicle energy management point of view, an evaluation system capable of comprehensively inspecting the whole vehicle performance, the system/key component performance and the control strategy relevance is established.
Disclosure of Invention
In order to solve the technical problems, the invention provides a method for testing energy flow and multi-physical-field integration of a light whole vehicle, wherein the light whole vehicle is a new energy vehicle, and the test environment is a complex mountain working condition of a plateau, and the method comprises the following steps:
Acquiring running information of a new energy automobile when the new energy automobile runs under the working condition of a complex mountain area on a plateau, wherein the running information comprises motor power, battery temperature, current, voltage, battery power, speed and gradient angle of a road;
According to the driving information, a power system energy equation for testing the energy flow of the new energy automobile and a whole automobile heat conduction equation for testing the heat conduction of the new energy automobile are set, wherein the power system energy equation comprises a plurality of physical field functions for testing the influence on the new energy automobile under the condition of multi-physical field coupling.
Further, the power system energy equation includes:
,
wherein, For the motor power of the new energy automobile,Is the battery temperatureCurrent flowSum voltage ofAn impact function on the power of the battery,For the battery power of the new energy automobile,For the speed of the new energy automobileAnd slope angle of roadThe function of the influence on the drive power,For the driving power of the new energy automobile,As an impact function of the auxiliary system power,For the auxiliary system power of the new energy automobile,And (5) losing power for the system of the new energy automobile.
Further, the whole vehicle heat conduction equation comprises:
,
wherein, In order to be the temperature of the battery,In order to be able to take time,As a first adjustment factor for the temperature of the material,Is the heat generated in unit volume when the battery is charged and discharged,For the density of the battery material,Is the specific heat capacity of the battery material,As a second adjustment factor for the temperature of the liquid,And the environmental temperature of the new energy automobile is set.
Further, the battery temperatureCurrent flowSum voltage ofInfluence function on battery powerComprising the following steps:
,
wherein, As the reference power of the battery,As a weight of the temperature,For the optimal operating temperature of the battery,As a weight of the current flow,Is the voltage weight.
Further, the speed of the new energy automobileAnd slope angle of roadInfluence function on driving powerComprising the following steps:
,
wherein, As the reference driving power, it is possible to obtain,As a weight of the velocity of the object,For the slope angle weight,Weights are integrated for speed and grade angle.
Further, the auxiliary system power influence functionComprising the following steps:
,
wherein, As a reference to assist in system power,In order to assist in the weighting of the system voltage,For an optimal operating voltage of the auxiliary system,In order to assist in the system temperature weighting,As a weight of the load-factor,In order to assist in the load factor of the system,For the optimum operating temperature of the auxiliary system,Is the operating temperature of the auxiliary system.
Further, the driving power of the new energy automobileComprising the following steps:
,
wherein, For the first adjustment factor of the velocity,For the second adjustment factor of the velocity,For the third adjustment factor of the speed,For the fourth adjustment factor of the speed,As the first adjustment factor for the slope angle,For the second adjustment factor of the slope angle,For the first adjustment factor of altitude,For the second adjustment factor of altitude,The altitude of the new energy automobile is the altitude.
The invention also provides a test system for integrating the energy flow and the multiple physical fields of the light whole vehicle, wherein the light whole vehicle is a new energy vehicle, the test environment is a complex mountain working condition of a plateau, and the test system comprises:
The data acquisition module is used for acquiring running information of the new energy automobile when the new energy automobile runs under the working condition of the complex mountain area on the plateau, wherein the running information comprises motor power, battery temperature, current, voltage, battery power, speed and gradient angle of a road;
The testing module is used for setting a power system energy equation for testing the energy flow of the new energy automobile and a whole automobile heat conduction equation for testing the heat conduction of the new energy automobile according to the driving information, wherein the power system energy equation comprises a plurality of physical field functions and is used for testing the influence on the new energy automobile under the condition of multi-physical field coupling.
Further, the power system energy equation includes:
,
wherein, For the motor power of the new energy automobile,Is the battery temperatureCurrent flowSum voltage ofAn impact function on the power of the battery,For the battery power of the new energy automobile,For the speed of the new energy automobileAnd slope angle of roadThe function of the influence on the drive power,For the driving power of the new energy automobile,As an impact function of the auxiliary system power,For the auxiliary system power of the new energy automobile,And (5) losing power for the system of the new energy automobile.
Further, the whole vehicle heat conduction equation comprises:
,
wherein, In order to be the temperature of the battery,In order to be able to take time,As a first adjustment factor for the temperature of the material,Is the heat generated in unit volume when the battery is charged and discharged,For the density of the battery material,Is the specific heat capacity of the battery material,As a second adjustment factor for the temperature of the liquid,And the environmental temperature of the new energy automobile is set.
Compared with the prior art, the technical scheme of the invention has the following beneficial effects:
The invention provides a power system energy equation for testing the energy flow of the new energy automobile and a whole automobile heat conduction equation for testing the heat conduction of the new energy automobile, wherein the power system energy equation comprises a plurality of physical field functions for testing the influence on the new energy automobile under the condition of multi-physical field coupling. The method can test the influence of the energy flow and multiple physical fields of the new energy automobile on the performance of the new energy automobile under the condition of complex mountain road conditions on the highland, thereby efficiently providing test data for research personnel and providing data support for subsequent development and adjustment.
Drawings
FIG. 1 is a flow chart of the method of embodiment 1 of the present invention;
fig. 2 is a system configuration diagram of embodiment 2 of the present invention.
Detailed Description
In order to better understand the above technical solutions, the following detailed description will be given with reference to the accompanying drawings and specific embodiments.
The method provided by the invention can be implemented in a terminal environment that can include one or more of a processor, a storage medium, and a display screen. Wherein the storage medium has stored therein at least one instruction that is loaded and executed by the processor to implement the method described in the embodiments below.
The processor may include one or more processing cores. The processor connects various parts within the overall terminal using various interfaces and lines, performs various functions of the terminal and processes data by executing or executing instructions, programs, code sets, or instruction sets stored in the storage medium, and invoking data stored in the storage medium.
The storage medium may include a random access Memory (Random Access Memory, RAM) or a Read-Only Memory (ROM). The storage medium may be used to store instructions, programs, code sets, or instructions.
The display screen is used for displaying the interaction section of each application program.
All subscripts in the formula of the invention are only used for distinguishing parameters and have no practical meaning.
In addition, it will be appreciated by those skilled in the art that the structure of the terminal described above is not limiting and that the terminal may include more or fewer components, or may combine certain components, or a different arrangement of components. For example, the terminal further includes components such as a radio frequency circuit, an input unit, a sensor, an audio circuit, a power supply, and the like, which are not described herein.
Example 1
As shown in fig. 1, the embodiment of the invention provides a method for testing energy flow and multi-physical-field integration of a light whole vehicle, wherein the light whole vehicle is a new energy vehicle, and a test environment is a complex mountain working condition of a plateau, and the method comprises the following steps:
Step 101, acquiring driving information of a new energy automobile when the new energy automobile drives under the working condition of a complex mountain area on a plateau, wherein the driving information comprises motor power, battery temperature, current, voltage, battery power, speed and gradient angle of a road;
and 102, setting a power system energy equation for testing the energy flow of the new energy automobile and a whole automobile heat conduction equation for testing the heat conduction of the new energy automobile according to the driving information, wherein the power system energy equation comprises a plurality of physical field functions for testing the influence on the new energy automobile under the condition of multi-physical field coupling.
Specifically, the power system energy equation includes:
,
wherein, For the motor power of the new energy automobile,Is the battery temperatureCurrent flowSum voltage ofAn impact function on the power of the battery,For the battery power of the new energy automobile,For the speed of the new energy automobileAnd slope angle of roadThe function of the influence on the drive power,For the driving power of the new energy automobile,As an impact function of the auxiliary system power,For the auxiliary system power of the new energy automobile,And (5) losing power for the system of the new energy automobile.
Specifically, the whole vehicle heat conduction equation comprises:
,
wherein, In order to be the temperature of the battery,In order to be able to take time,As a first adjustment factor for the temperature of the material,Is the heat generated in unit volume when the battery is charged and discharged,For the density of the battery material,Is the specific heat capacity of the battery material,As a second adjustment factor for the temperature of the liquid,And the environmental temperature of the new energy automobile is set.
Specifically, the battery temperatureCurrent flowSum voltage ofInfluence function on battery powerComprising the following steps:
,
wherein, As the reference power of the battery,As a weight of the temperature,For the optimal operating temperature of the battery,As a weight of the current flow,Is the voltage weight.
Specifically, the speed of the new energy automobileAnd slope angle of roadInfluence function on driving powerComprising the following steps:
,
wherein, As the reference driving power, it is possible to obtain,As a weight of the velocity of the object,For the slope angle weight,Weights are integrated for speed and grade angle.
Specifically, the influence function of the auxiliary system powerComprising the following steps:
,
wherein, As a reference to assist in system power,In order to assist in the weighting of the system voltage,For an optimal operating voltage of the auxiliary system,In order to assist in the system temperature weighting,As a weight of the load-factor,In order to assist in the load factor of the system,For the optimum operating temperature of the auxiliary system,Is the operating temperature of the auxiliary system.
The auxiliary system is 1. The electric system comprises an illumination system, including lights, signal lights and the like inside and outside the vehicle.
2. Sound systems, car audio, navigation systems, etc.
3. The vehicle-mounted entertainment system comprises a display screen, audio and video playing equipment and the like.
4. Sensors and controllers various sensors and control units for vehicle operating condition monitoring and control.
5. The air conditioning system comprises an air conditioning compressor, a refrigerant circulation system and the like, and is used for cooling the interior of the vehicle.
6. Heating, namely a heater used for heating up the interior of the vehicle.
7. Ventilation, namely a fan and an air circulation system, which are used for ventilation in the vehicle.
8. The auxiliary driving system comprises a power steering system, a power steering motor, a related control system, a brake power assisting system, an ABS system, a brake power assisting pump and the like.
Specifically, the driving power of the new energy automobileComprising the following steps:
,
wherein, For the first adjustment factor of the velocity,For the second adjustment factor of the velocity,For the third adjustment factor of the speed,For the fourth adjustment factor of the speed,As the first adjustment factor for the slope angle,For the second adjustment factor of the slope angle,For the first adjustment factor of altitude,For the second adjustment factor of altitude,The altitude of the new energy automobile is the altitude.
Example 2
As shown in fig. 2, the embodiment of the invention further provides a test system for integrating energy flow and multiple physical fields of a light whole vehicle, wherein the light whole vehicle is a new energy vehicle, and the test environment is a complex mountain working condition of a plateau, and the test system comprises:
The data acquisition module is used for acquiring running information of the new energy automobile when the new energy automobile runs under the working condition of the complex mountain area on the plateau, wherein the running information comprises motor power, battery temperature, current, voltage, battery power, speed and gradient angle of a road;
The testing module is used for setting a power system energy equation for testing the energy flow of the new energy automobile and a whole automobile heat conduction equation for testing the heat conduction of the new energy automobile according to the driving information, wherein the power system energy equation comprises a plurality of physical field functions and is used for testing the influence on the new energy automobile under the condition of multi-physical field coupling.
Specifically, the power system energy equation includes:
,
wherein, For the motor power of the new energy automobile,Is the battery temperatureCurrent flowSum voltage ofAn impact function on the power of the battery,For the battery power of the new energy automobile,For the speed of the new energy automobileAnd slope angle of roadThe function of the influence on the drive power,For the driving power of the new energy automobile,As an impact function of the auxiliary system power,For the auxiliary system power of the new energy automobile,And (5) losing power for the system of the new energy automobile.
Specifically, the whole vehicle heat conduction equation comprises:
,
wherein, In order to be the temperature of the battery,In order to be able to take time,As a first adjustment factor for the temperature of the material,Is the heat generated in unit volume when the battery is charged and discharged,For the density of the battery material,Is the specific heat capacity of the battery material,As a second adjustment factor for the temperature of the liquid,And the environmental temperature of the new energy automobile is set.
Specifically, the battery temperatureCurrent flowSum voltage ofInfluence function on battery powerComprising the following steps:
,
wherein, As the reference power of the battery,As a weight of the temperature,For the optimal operating temperature of the battery,As a weight of the current flow,Is the voltage weight.
Specifically, the speed of the new energy automobileAnd slope angle of roadInfluence function on driving powerComprising the following steps:
,
wherein, As the reference driving power, it is possible to obtain,As a weight of the velocity of the object,For the slope angle weight,Weights are integrated for speed and grade angle.
Specifically, the influence function of the auxiliary system powerComprising the following steps:
,
wherein, As a reference to assist in system power,In order to assist in the weighting of the system voltage,For an optimal operating voltage of the auxiliary system,In order to assist in the system temperature weighting,As a weight of the load-factor,In order to assist in the load factor of the system,For the optimum operating temperature of the auxiliary system,Is the operating temperature of the auxiliary system.
The auxiliary system is 1. The electric system comprises an illumination system, including lights, signal lights and the like inside and outside the vehicle.
2. Sound systems, car audio, navigation systems, etc.
3. The vehicle-mounted entertainment system comprises a display screen, audio and video playing equipment and the like.
4. Sensors and controllers various sensors and control units for vehicle operating condition monitoring and control.
5. The air conditioning system comprises an air conditioning compressor, a refrigerant circulation system and the like, and is used for cooling the interior of the vehicle.
6. Heating, namely a heater used for heating up the interior of the vehicle.
7. Ventilation, namely a fan and an air circulation system, which are used for ventilation in the vehicle.
8. The auxiliary driving system comprises a power steering system, a power steering motor, a related control system, a brake power assisting system, an ABS system, a brake power assisting pump and the like.
Specifically, the driving power of the new energy automobileComprising the following steps:
,
wherein, For the first adjustment factor of the velocity,For the second adjustment factor of the velocity,For the third adjustment factor of the speed,For the fourth adjustment factor of the speed,As the first adjustment factor for the slope angle,For the second adjustment factor of the slope angle,For the first adjustment factor of altitude,For the second adjustment factor of altitude,The altitude of the new energy automobile is the altitude.
Example 3
The embodiment of the invention also provides a storage medium which stores a plurality of instructions, wherein the instructions are used for realizing the light whole vehicle energy flow and multi-physical field integrated test method.
Alternatively, in this embodiment, the storage medium may be located in any one of the computer terminals in the computer terminal group in the computer network, or in any one of the mobile terminals in the mobile terminal group.
Optionally, in the present embodiment, the storage medium is configured to store program code for performing the steps of step 101 of obtaining driving information of the new energy automobile when the new energy automobile is driving under the complex mountain working condition of the altitude, wherein the driving information includes motor power, battery temperature, current, voltage, battery power, speed, and gradient angle of the road;
and 102, setting a power system energy equation for testing the energy flow of the new energy automobile and a whole automobile heat conduction equation for testing the heat conduction of the new energy automobile according to the driving information, wherein the power system energy equation comprises a plurality of physical field functions for testing the influence on the new energy automobile under the condition of multi-physical field coupling.
Specifically, the power system energy equation includes:
,
wherein, For the motor power of the new energy automobile,Is the battery temperatureCurrent flowSum voltage ofAn impact function on the power of the battery,For the battery power of the new energy automobile,For the speed of the new energy automobileAnd slope angle of roadThe function of the influence on the drive power,For the driving power of the new energy automobile,As an impact function of the auxiliary system power,For the auxiliary system power of the new energy automobile,And (5) losing power for the system of the new energy automobile.
Specifically, the whole vehicle heat conduction equation comprises:
,
wherein, In order to be the temperature of the battery,In order to be able to take time,As a first adjustment factor for the temperature of the material,Is the heat generated in unit volume when the battery is charged and discharged,For the density of the battery material,Is the specific heat capacity of the battery material,As a second adjustment factor for the temperature of the liquid,And the environmental temperature of the new energy automobile is set.
Specifically, the battery temperatureCurrent flowSum voltage ofInfluence function on battery powerComprising the following steps:
,
wherein, As the reference power of the battery,As a weight of the temperature,For the optimal operating temperature of the battery,As a weight of the current flow,Is the voltage weight.
Specifically, the speed of the new energy automobileAnd slope angle of roadInfluence function on driving powerComprising the following steps:
,
wherein, As the reference driving power, it is possible to obtain,As a weight of the velocity of the object,For the slope angle weight,Weights are integrated for speed and grade angle.
Specifically, the influence function of the auxiliary system powerComprising the following steps:
,
wherein, As a reference to assist in system power,In order to assist in the weighting of the system voltage,For an optimal operating voltage of the auxiliary system,In order to assist in the system temperature weighting,As a weight of the load-factor,In order to assist in the load factor of the system,For the optimum operating temperature of the auxiliary system,Is the operating temperature of the auxiliary system.
The auxiliary system is 1. The electric system comprises an illumination system, including lights, signal lights and the like inside and outside the vehicle.
2. Sound systems, car audio, navigation systems, etc.
3. The vehicle-mounted entertainment system comprises a display screen, audio and video playing equipment and the like.
4. Sensors and controllers various sensors and control units for vehicle operating condition monitoring and control.
5. The air conditioning system comprises an air conditioning compressor, a refrigerant circulation system and the like, and is used for cooling the interior of the vehicle.
6. Heating, namely a heater used for heating up the interior of the vehicle.
7. Ventilation, namely a fan and an air circulation system, which are used for ventilation in the vehicle.
8. The auxiliary driving system comprises a power steering system, a power steering motor, a related control system, a brake power assisting system, an ABS system, a brake power assisting pump and the like.
Specifically, the driving power of the new energy automobileComprising the following steps:
,
wherein, For the first adjustment factor of the velocity,For the second adjustment factor of the velocity,For the third adjustment factor of the speed,For the fourth adjustment factor of the speed,As the first adjustment factor for the slope angle,For the second adjustment factor of the slope angle,For the first adjustment factor of altitude,For the second adjustment factor of altitude,The altitude of the new energy automobile is the altitude.
Example 4
The embodiment of the invention also provides electronic equipment, which comprises a processor and a storage medium connected with the processor, wherein the storage medium stores a plurality of instructions, and the instructions can be loaded and executed by the processor so that the processor can execute a light whole vehicle energy flow and multi-physical field integrated test method.
In particular, the electronic device of the present embodiment may be a computer terminal that may include one or more processors and a storage medium.
The storage medium can be used for storing software programs and modules, such as a test method for light whole vehicle energy flow and multi-physical-field integration in the embodiment of the invention, corresponding program instructions/modules, and the processor executes various functional applications and data processing by running the software programs and modules stored in the storage medium, thereby realizing the test method for light whole vehicle energy flow and multi-physical-field integration. The storage medium may include a high-speed random access storage medium, and may also include a non-volatile storage medium, such as one or more magnetic storage systems, flash memory, or other non-volatile solid-state storage medium. In some examples, the storage medium may further include a storage medium remotely located with respect to the processor, and the remote storage medium may be connected to the terminal through a network. Examples of such networks include, but are not limited to, the internet, intranets, local area networks, mobile communication networks, and combinations thereof.
Step 101, obtaining running information of a new energy automobile when the new energy automobile runs under the working condition of a complex mountain area on a plateau, wherein the running information comprises motor power, battery temperature, current, voltage, battery power, speed and gradient angle of a road;
and 102, setting a power system energy equation for testing the energy flow of the new energy automobile and a whole automobile heat conduction equation for testing the heat conduction of the new energy automobile according to the driving information, wherein the power system energy equation comprises a plurality of physical field functions for testing the influence on the new energy automobile under the condition of multi-physical field coupling.
Specifically, the power system energy equation includes:
,
wherein, For the motor power of the new energy automobile,Is the battery temperatureCurrent flowSum voltage ofAn impact function on the power of the battery,For the battery power of the new energy automobile,For the speed of the new energy automobileAnd slope angle of roadThe function of the influence on the drive power,For the driving power of the new energy automobile,As an impact function of the auxiliary system power,For the auxiliary system power of the new energy automobile,And (5) losing power for the system of the new energy automobile.
Specifically, the whole vehicle heat conduction equation comprises:
,
wherein, In order to be the temperature of the battery,In order to be able to take time,As a first adjustment factor for the temperature of the material,Is the heat generated in unit volume when the battery is charged and discharged,For the density of the battery material,Is the specific heat capacity of the battery material,As a second adjustment factor for the temperature of the liquid,And the environmental temperature of the new energy automobile is set.
Specifically, the battery temperatureCurrent flowSum voltage ofInfluence function on battery powerComprising the following steps:
,
wherein, As the reference power of the battery,As a weight of the temperature,For the optimal operating temperature of the battery,As a weight of the current flow,Is the voltage weight.
Specifically, the speed of the new energy automobileAnd slope angle of roadInfluence function on driving powerComprising the following steps:
,
wherein, As the reference driving power, it is possible to obtain,As a weight of the velocity of the object,For the slope angle weight,Weights are integrated for speed and grade angle.
Specifically, the influence function of the auxiliary system powerComprising the following steps:
,
wherein, As a reference to assist in system power,In order to assist in the weighting of the system voltage,For an optimal operating voltage of the auxiliary system,In order to assist in the system temperature weighting,As a weight of the load-factor,In order to assist in the load factor of the system,For the optimum operating temperature of the auxiliary system,Is the operating temperature of the auxiliary system.
The auxiliary system is 1. The electric system comprises an illumination system, including lights, signal lights and the like inside and outside the vehicle.
2. Sound systems, car audio, navigation systems, etc.
3. The vehicle-mounted entertainment system comprises a display screen, audio and video playing equipment and the like.
4. Sensors and controllers various sensors and control units for vehicle operating condition monitoring and control.
5. The air conditioning system comprises an air conditioning compressor, a refrigerant circulation system and the like, and is used for cooling the interior of the vehicle.
6. Heating, namely a heater used for heating up the interior of the vehicle.
7. Ventilation, namely a fan and an air circulation system, which are used for ventilation in the vehicle.
8. The auxiliary driving system comprises a power steering system, a power steering motor, a related control system, a brake power assisting system, an ABS system, a brake power assisting pump and the like.
Specifically, the driving power of the new energy automobileComprising the following steps:
,
wherein, For the first adjustment factor of the velocity,For the second adjustment factor of the velocity,For the third adjustment factor of the speed,For the fourth adjustment factor of the speed,As the first adjustment factor for the slope angle,For the second adjustment factor of the slope angle,For the first adjustment factor of altitude,For the second adjustment factor of altitude,The altitude of the new energy automobile is the altitude.
The foregoing embodiment numbers of the present invention are merely for the purpose of description, and do not represent the advantages or disadvantages of the embodiments.
In the foregoing embodiments of the present invention, the descriptions of the embodiments are emphasized, and for a portion of this disclosure that is not described in detail in this embodiment, reference is made to the related descriptions of other embodiments.
In the embodiments provided in the present invention, it should be understood that the disclosed technology may be implemented in other manners. The system embodiments described above are merely exemplary, and for example, the division of the units is merely a logic function division, and there may be another division manner in actual implementation, for example, multiple units or components may be combined or integrated into another system, or some features may be omitted or not performed. Alternatively, the coupling or direct coupling or communication connection shown or discussed with each other may be through some interfaces, units or modules, or may be in electrical or other forms.
The units described as separate units may or may not be physically separate, and units shown as units may or may not be physical units, may be located in one place, or may be distributed on a plurality of network units. Some or all of the units may be selected according to actual needs to achieve the purpose of the solution of this embodiment.
In addition, each functional unit in the embodiments of the present invention may be integrated in one processing unit, or each unit may exist alone physically, or two or more units may be integrated in one unit. The integrated units may be implemented in hardware or in software functional units.
The integrated units, if implemented in the form of software functional units and sold or used as stand-alone products, may be stored in a computer readable storage medium. Based on such understanding, the technical solution of the present invention may be embodied essentially or partly in the form of a software product or all or part of the technical solution, which is stored in a storage medium, and includes several instructions for causing a computer device (which may be a personal computer, a server, or a network device, etc.) to perform all or part of the steps of the method according to the embodiments of the present invention. The storage medium includes a usb disk, a Read-Only Memory (ROM), a random-access Memory (RAM, random Access Memory), a removable hard disk, a magnetic disk, or a compact disk, etc. which can store the program code.
It is apparent that the above examples are given by way of illustration only and are not limiting of the embodiments. Other variations or modifications of the above teachings will be apparent to those of ordinary skill in the art. It is not necessary here nor is it exhaustive of all embodiments. While still being apparent from variations or modifications that may be made by those skilled in the art are within the scope of the invention.
Claims (2)
1. A light whole vehicle energy flow and multi-physical field integrated test method is provided, wherein the light whole vehicle is a new energy vehicle, and the test environment is a plateau complex mountain working condition, and the method is characterized by comprising the following steps:
Acquiring running information of a new energy automobile when the new energy automobile runs under the working condition of a complex mountain area on a plateau, wherein the running information comprises motor power, battery temperature, current, voltage, battery power, speed and gradient angle of a road;
According to the driving information, a power system energy equation for testing the energy flow of the new energy automobile and a whole automobile heat conduction equation for testing the heat conduction of the new energy automobile are set, wherein the power system energy equation comprises a plurality of physical field functions, a plurality of physical field functions and a plurality of physical field parameters, wherein the physical field functions are used for testing the influence on the new energy automobile under the condition of multi-physical field coupling;
The power system energy equation includes:
,
wherein, For the motor power of the new energy automobile,Is the battery temperatureCurrent flowSum voltage ofAn impact function on the power of the battery,For the battery power of the new energy automobile,For the speed of the new energy automobileAnd slope angle of roadThe function of the influence on the drive power,For the driving power of the new energy automobile,As an impact function of the auxiliary system power,For the auxiliary system power of the new energy automobile,Losing power for the system of the new energy automobile;
the whole car heat conduction equation comprises:
,
wherein, In order to be the temperature of the battery,In order to be able to take time,As a first adjustment factor for the temperature of the material,Is the heat generated in unit volume when the battery is charged and discharged,For the density of the battery material,Is the specific heat capacity of the battery material,As a second adjustment factor for the temperature of the liquid,The environmental temperature of the new energy automobile is;
The battery temperature Current flowSum voltage ofInfluence function on battery powerComprising the following steps:
,
wherein, As the reference power of the battery,As a weight of the temperature,For the optimal operating temperature of the battery,As a weight of the current flow,Is the voltage weight;
the speed of the new energy automobile And slope angle of roadInfluence function on driving powerComprising the following steps:
,
wherein, As the reference driving power, it is possible to obtain,As a weight of the velocity of the object,For the slope angle weight,Comprehensive weights for speed and grade angle;
Influence function of the auxiliary system power Comprising the following steps:
,
wherein, As a reference to assist in system power,In order to assist in the weighting of the system voltage,For an optimal operating voltage of the auxiliary system,In order to assist in the system temperature weighting,As a weight of the load-factor,In order to assist in the load factor of the system,For the optimum operating temperature of the auxiliary system,Is the working temperature of the auxiliary system;
driving power of the new energy automobile Comprising the following steps:
,
wherein, For the first adjustment factor of the velocity,For the second adjustment factor of the velocity,For the third adjustment factor of the speed,For the fourth adjustment factor of the speed,As the first adjustment factor for the slope angle,For the second adjustment factor of the slope angle,For the first adjustment factor of altitude,For the second adjustment factor of altitude,The altitude of the new energy automobile is the altitude.
2. The utility model provides a light-duty whole car energy flows and integrated test system in many physical fields, light-duty whole car is new energy automobile, and test environment is the complicated mountain region operating mode in plateau, its characterized in that includes:
The data acquisition module is used for acquiring running information of the new energy automobile when the new energy automobile runs under the working condition of the complex mountain area on the plateau, wherein the running information comprises motor power, battery temperature, current, voltage, battery power, speed and gradient angle of a road;
The testing module is used for setting a power system energy equation for testing the energy flow of the new energy automobile and a whole automobile heat conduction equation for testing the heat conduction of the new energy automobile according to the driving information, wherein the power system energy equation comprises a plurality of physical field functions and a plurality of physical field functions, wherein the physical field functions are used for testing the influence on the new energy automobile under the condition of multi-physical field coupling;
The power system energy equation includes:
,
wherein, For the motor power of the new energy automobile,Is the battery temperatureCurrent flowSum voltage ofAn impact function on the power of the battery,For the battery power of the new energy automobile,For the speed of the new energy automobileAnd slope angle of roadThe function of the influence on the drive power,For the driving power of the new energy automobile,As an impact function of the auxiliary system power,For the auxiliary system power of the new energy automobile,Losing power for the system of the new energy automobile;
the whole car heat conduction equation comprises:
,
wherein, In order to be the temperature of the battery,In order to be able to take time,As a first adjustment factor for the temperature of the material,Is the heat generated in unit volume when the battery is charged and discharged,For the density of the battery material,Is the specific heat capacity of the battery material,As a second adjustment factor for the temperature of the liquid,The environmental temperature of the new energy automobile is;
The battery temperature Current flowSum voltage ofInfluence function on battery powerComprising the following steps:
,
wherein, As the reference power of the battery,As a weight of the temperature,For the optimal operating temperature of the battery,As a weight of the current flow,Is the voltage weight;
the speed of the new energy automobile And slope angle of roadInfluence function on driving powerComprising the following steps:
,
wherein, As the reference driving power, it is possible to obtain,As a weight of the velocity of the object,For the slope angle weight,Comprehensive weights for speed and grade angle;
Influence function of the auxiliary system power Comprising the following steps:
,
wherein, As a reference to assist in system power,In order to assist in the weighting of the system voltage,For an optimal operating voltage of the auxiliary system,In order to assist in the system temperature weighting,As a weight of the load-factor,In order to assist in the load factor of the system,For the optimum operating temperature of the auxiliary system,Is the working temperature of the auxiliary system;
driving power of the new energy automobile Comprising the following steps:
,
wherein, For the first adjustment factor of the velocity,For the second adjustment factor of the velocity,For the third adjustment factor of the speed,For the fourth adjustment factor of the speed,As the first adjustment factor for the slope angle,For the second adjustment factor of the slope angle,For the first adjustment factor of altitude,For the second adjustment factor of altitude,The altitude of the new energy automobile is the altitude.
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