Method, device and equipment for rapid testing of driving range of pure electric vehicles under multiple working conditions

Abstract

The present invention provides a method, device and equipment for quickly testing the driving range of a pure electric vehicle under multiple working conditions. The method for quickly testing the driving range of a pure electric vehicle under multiple working conditions includes: controlling a fully charged test vehicle to run in sequence under each test working condition and then quickly discharge; recording test data of the test vehicle under each test working condition; based on the test data, calculating the total amount of electricity that can be discharged by the power battery corresponding to the test vehicle under each test working condition and the power consumption per kilometer; based on the total amount of electricity that can be discharged by the power battery corresponding to the test vehicle under each test working condition and the power consumption per kilometer, calculating the driving range of the test vehicle under each test working condition. The present invention can combine each test working condition to complete the test in one discharge cycle, and its test cycle is short, and the corresponding manpower and resource costs of its test are also low. On the basis of achieving the goal of quickly testing the driving range under each working condition, the accuracy of the determined driving range data under each working condition is also guaranteed.

Description

Technical Field

[0001] The present invention relates to the technical field of driving range testing of pure electric vehicles, and in particular to a method, device and equipment for quickly testing the driving range of a pure electric vehicle under multiple working conditions. Background Art

[0002] The current electric vehicle range test method EV-test, GB / T18386.1-2021 tests the range under different speed scenarios such as normal temperature, low temperature, high temperature, and high speed separately, and each requires a complete discharge cycle. At present, the shortening method can only be used when conducting normal temperature range tests. The shortening method greatly shortens the test time by introducing two sections of high-speed driving rapid discharge during the test. The conventional working condition method is used for low-temperature and high-temperature range tests. Since the average vehicle speed of the conventional working condition method is about 30km / h, the test time of low-temperature and high-temperature single tests is very long. If the normal temperature, low temperature, high temperature, and high-speed range are tested separately, the overall test cycle is very long. It takes 12 days for a vehicle to complete the above test, which takes up a lot of testing resources and manpower, and the testing cost is relatively high. Summary of the invention

[0003] The main purpose of the present invention is to provide a method, device and equipment for quickly testing the driving range of a pure electric vehicle under multiple working conditions, aiming to solve the technical problems in the prior art of testing the driving range under various working conditions, which results in a long test cycle and high test cost due to the separate testing of each test condition.

[0004] In a first aspect, the present invention provides a method for quickly testing the driving range of a pure electric vehicle under multiple operating conditions, and the method for quickly testing the driving range of a pure electric vehicle under multiple operating conditions comprises the following steps:

[0005] Control the fully charged test vehicle to run under each test condition in sequence and then discharge it quickly;

[0006] Record the test data of the test vehicle under each test condition;

[0007] Based on the test data, the total dischargeable power of the power battery corresponding to the test vehicle and the power consumption per kilometer under each test condition are calculated;

[0008] Based on the total dischargeable power of the power battery corresponding to the test vehicle under each test condition and the power consumption per kilometer, the driving range of the test vehicle under each test condition is calculated.

[0009] Optionally, the step of controlling the fully charged test vehicle to run in sequence under each test condition and then perform rapid discharge comprises:

[0010] Controlling the fully charged test vehicle to operate under a first test condition;

[0011] Controlling the test vehicle that has completed the first test condition to be immersed in a second preset temperature range at a preset humidity and a preset light intensity for a first preset time and then to be operated under a second test condition, wherein the lower limit of the second preset temperature range is greater than the upper limit of the first preset temperature range;

[0012] Controlling the test vehicle that has completed the second test condition to cool down for a second preset time with a fan at a preset wind speed within a first preset temperature range and then to operate under a third test condition;

[0013] Controlling the test vehicle that has completed the third test condition to cool the vehicle at a third preset temperature with a fan at a preset wind speed for a second preset time and to operate under a fourth test condition after the vehicle is immersed until the reducer oil temperature reaches a fourth preset temperature, wherein the third preset temperature is lower than the fourth preset temperature, and the fourth preset temperature is lower than the lower limit of the first preset temperature range;

[0014] After the test vehicle has completed the fourth test condition, the test vehicle is controlled to turn off the air conditioner and then operate under the first discharge condition;

[0015] The ambient temperature of the test vehicle after the first discharge condition is controlled to rise to the first preset temperature range within a third preset time, and the vehicle is operated under the second discharge condition after the ambient temperature is within the first preset temperature range for a fourth preset time.

[0016] Optionally, the first test condition is: the ambient temperature of the test vehicle is within a first preset temperature range, and the test vehicle repeatedly runs a preset CLTC-P speed condition;

[0017] The second test condition is: the ambient temperature of the test vehicle is within a second preset temperature range, the ambient light intensity is a preset light intensity, the ambient humidity is a preset humidity, the air conditioner of the test vehicle is turned on in a first preset manner, and the test vehicle repeatedly runs a preset number of CLTC-P speed conditions;

[0018] The third test condition is: the ambient temperature of the test vehicle is within a first preset temperature range, and the test vehicle runs at a preset speed for a first preset time;

[0019] The fourth test condition is: the ambient temperature of the test vehicle is a fourth preset temperature, the air conditioner of the test vehicle is turned on in a second preset manner, and the test vehicle repeatedly runs a preset CLTC-P speed condition;

[0020] The first discharge condition is: the ambient temperature of the test vehicle is a fourth preset temperature, and the test vehicle runs at a preset speed until the vehicle speed cannot be maintained at a speed less than a preset threshold value than the preset vehicle speed;

[0021] The second discharge condition is: the ambient temperature of the test vehicle is within a first preset temperature range, and the test vehicle runs at a preset speed until the vehicle speed cannot be maintained at a speed that is less than a preset threshold value than the preset speed.

[0022] Optionally, the step of calculating the total dischargeable power and power consumption per kilometer of the power battery corresponding to the test vehicle under each test condition based on the test data includes:

[0023] The total dischargeable power of the power battery corresponding to the test vehicle under each test condition is calculated based on the power battery charge change under each test condition, wherein the total dischargeable power of the power battery corresponding to the test vehicle under the first / second / third test condition is the sum of the power battery charge change under each test condition and each discharge condition, and the total dischargeable power of the power battery corresponding to the test vehicle under the fourth test condition is the sum of the power battery charge change under each test condition and the first discharge condition;

[0024] Based on the power battery charge change of the test vehicle corresponding to each CLTC-P speed condition in the first / second / fourth test condition, the mileage, and the total dischargeable power of the power battery corresponding to the test vehicle under the first / second / fourth test condition, the power consumption per kilometer corresponding to the test vehicle under the first / second / fourth test condition is calculated;

[0025] Based on the change in power level of the power battery of the test vehicle corresponding to the third test condition and the mileage, the power consumption per kilometer corresponding to the test vehicle under the third test condition is calculated.

[0026] Optionally, the step of calculating the power consumption per kilometer corresponding to the test vehicle under the first / second / fourth test condition based on the power battery power change amount of the test vehicle corresponding to each CLTC-P speed condition in the first / second / fourth test condition, the mileage, and the total dischargeable power of the power battery corresponding to the test vehicle under the first / second / fourth test condition comprises:

[0027] The power battery power change, mileage, and total power that can be discharged from the power battery of the test vehicle corresponding to each CLTC-P speed condition in the first / second / fourth test condition are input into a preset calculation model to calculate the power consumption per kilometer of the test vehicle under the first / second / fourth test condition, wherein the preset calculation model is:

[0028]

[0029]

[0030] Where c is one of the CLTC-P speed conditions under the first / second / fourth test conditions, E battery(c) is the change in the power battery charge of the test vehicle corresponding to one of the CLTC-P speed conditions in the first / second / fourth test conditions, D(c) is the mileage of the test vehicle corresponding to one of the CLTC-P speed conditions in the first / second / fourth test conditions, k(c) is the power consumption weighting coefficient corresponding to one of the CLTC-P speed conditions in the first / second / fourth test conditions, E battery (all) is the total dischargeable power of the power battery corresponding to the test vehicle under the first / second / fourth test conditions, n is the number of CLTC-P speed conditions, 3≤n≤5.

[0031] Optionally, the step of calculating the power consumption per kilometer corresponding to the test vehicle under the third test condition based on the power change of the power battery of the test vehicle under the third test condition and the mileage includes:

[0032] The power consumption per kilometer of the test vehicle under the third test condition is calculated by inputting the power change of the power battery of the test vehicle under the third test condition and the mileage into the first formula, where the first formula is:

[0033]

[0034] Among them, EC is the power consumption per kilometer of the test vehicle under the third test condition, E battery (CS) is the change in charge of the power battery of the test vehicle under the third test condition, and D(CS) is the mileage of the test vehicle under the third test condition.

[0035] Optionally, the step of calculating the driving range of the test vehicle under each test condition based on the total dischargeable power of the power battery corresponding to the test vehicle under each test condition and the power consumption per kilometer includes:

[0036] The total dischargeable power of the power battery corresponding to the test vehicle under each test condition and the power consumption per kilometer are input into the second formula to calculate the driving range of the test vehicle under each test condition, wherein the second formula is:

[0037]

[0038] Among them, D R is the driving range of the test vehicle under each test condition, E battery (all) is the total dischargeable power of the power battery corresponding to the test vehicle under each test condition, and EC is the power consumption per kilometer corresponding to the test vehicle under each test condition.

[0039] Optionally, after the step of controlling the fully charged test vehicle to run in sequence under each test condition, the method further includes:

[0040] Control the external AC charging pile to charge the test vehicle to full power, and record the total amount of electricity charged by the external charging pile;

[0041] Substitute the total power and the driving range of the test vehicle under the first / second / third / fourth test conditions into the third formula to calculate the power consumption per kilometer of the test vehicle under each test condition based on the external power grid, wherein the third formula is:

[0042]

[0043] Among them, EC PG E is the power consumption per kilometer of the test vehicle under various test conditions based on the external power grid, AC It represents the total amount of electricity charged by the external charging pile after the test. R Indicates the driving range of the test vehicle under each test condition.

[0044] In a second aspect, the present invention further provides a device for rapidly testing the driving range of a pure electric vehicle under multiple operating conditions, the device comprising:

[0045] A control module is used to control the fully charged test vehicle to run in sequence under various test conditions and then discharge quickly;

[0046] A recording module, used to record the test data of the test vehicle under various test conditions;

[0047] A first calculation module is used to calculate the total dischargeable power and power consumption per kilometer of the power battery corresponding to the test vehicle under each test condition based on the test data;

[0048] The second calculation module is used to calculate the driving range of the test vehicle under each test condition based on the total dischargeable power of the power battery corresponding to the test vehicle under each test condition and the power consumption per kilometer.

[0049] Optionally, the control module is specifically used to:

[0050] Controlling the fully charged test vehicle to operate under a first test condition;

[0051] Controlling the test vehicle that has completed the first test condition to be immersed in a second preset temperature range at a preset humidity and a preset light intensity for a first preset time and then to be operated under a second test condition, wherein the lower limit of the second preset temperature range is greater than the upper limit of the first preset temperature range;

[0052] Controlling the test vehicle that has completed the second test condition to cool down for a second preset time with a fan at a preset wind speed within a first preset temperature range and then to operate under a third test condition;

[0053] Controlling the test vehicle that has completed the third test condition to cool the vehicle at a third preset temperature with a fan at a preset wind speed for a second preset time and to operate under a fourth test condition after the vehicle is immersed until the reducer oil temperature reaches a fourth preset temperature, wherein the third preset temperature is lower than the fourth preset temperature, and the fourth preset temperature is lower than the lower limit of the first preset temperature range;

[0054] After the test vehicle has completed the fourth test condition, the test vehicle is controlled to turn off the air conditioner and then operate under the first discharge condition;

[0055] The ambient temperature of the test vehicle after the first discharge condition is controlled to rise to the first preset temperature range within a third preset time, and the vehicle is operated under the second discharge condition after the ambient temperature is within the first preset temperature range for a fourth preset time.

[0056] Optionally, the first test condition is: the ambient temperature of the test vehicle is within a first preset temperature range, and the test vehicle repeatedly runs a preset number of CLTC-P speed conditions;

[0057] The second test condition is: the ambient temperature of the test vehicle is within a second preset temperature range, the ambient light intensity is a preset light intensity, the ambient humidity is a preset humidity, the air conditioner of the test vehicle is turned on in a first preset manner, and the test vehicle repeatedly runs a preset number of CLTC-P speed conditions;

[0058] The third test condition is: the ambient temperature of the test vehicle is within a first preset temperature range, and the test vehicle runs at a preset speed for a first preset time;

[0059] The fourth test condition is: the ambient temperature of the test vehicle is a fourth preset temperature, the air conditioner of the test vehicle is turned on in a second preset manner, and the test vehicle repeatedly runs a preset CLTC-P speed condition;

[0060] The first discharge condition is: the ambient temperature of the test vehicle is a fourth preset temperature, and the test vehicle runs at a preset speed until the vehicle speed cannot be maintained at a speed less than a preset threshold value than the preset vehicle speed;

[0061] The second discharge condition is: the ambient temperature of the test vehicle is within a first preset temperature range, and the test vehicle runs at a preset speed until the vehicle speed cannot be maintained at a speed that is less than a preset threshold value than the preset speed.

[0062] Optionally, the first computing module is specifically configured to:

[0063] The total dischargeable power of the power battery corresponding to the test vehicle under each test condition is calculated based on the power battery charge change under each test condition, wherein the total dischargeable power of the power battery corresponding to the test vehicle under the first / second / third test condition is the sum of the power battery charge change under each test condition and each discharge condition, and the total dischargeable power of the power battery corresponding to the test vehicle under the fourth test condition is the sum of the power battery charge change under each test condition and the first discharge condition;

[0064] Based on the power battery charge change of the test vehicle corresponding to each CLTC-P speed condition in the first / second / fourth test condition, the mileage, and the total dischargeable power of the power battery corresponding to the test vehicle under the first / second / fourth test condition, the power consumption per kilometer corresponding to the test vehicle under the first / second / fourth test condition is calculated;

[0065] Based on the change in power level of the power battery of the test vehicle corresponding to the third test condition and the mileage, the power consumption per kilometer corresponding to the test vehicle under the third test condition is calculated.

[0066] Optionally, the first calculation module is further specifically used for:

[0067] The power battery power change, mileage, and total power that can be discharged from the power battery of the test vehicle corresponding to each CLTC-P speed condition in the first / second / fourth test condition are input into a preset calculation model to calculate the power consumption per kilometer of the test vehicle under the first / second / fourth test condition, wherein the preset calculation model is:

[0068]

[0069]

[0070] Where c is one of the CLTC-P speed conditions under the first / second / fourth test conditions, E battery (c) is the change in the power battery charge of the test vehicle corresponding to one of the CLTC-P speed conditions in the first / second / fourth test conditions, D(c) is the mileage of the test vehicle corresponding to one of the CLTC-P speed conditions in the first / second / fourth test conditions, k(c) is the power consumption weighting coefficient corresponding to one of the CLTC-P speed conditions in the first / second / fourth test conditions, E battery (all) is the total dischargeable power of the power battery corresponding to the test vehicle under the first / second / fourth test conditions, n is the number of CLTC-P speed conditions, 3≤n≤5.

[0071] Optionally, the first calculation module is further specifically used for:

[0072] The power consumption per kilometer of the test vehicle under the third test condition is calculated by inputting the power change of the power battery of the test vehicle under the third test condition and the mileage into the first formula, where the first formula is:

[0073]

[0074] Among them, EC is the power consumption per kilometer of the test vehicle under the third test condition, E battery (CS) is the change in charge of the power battery of the test vehicle under the third test condition, and D(CS) is the mileage of the test vehicle under the third test condition.

[0075] Optionally, the second computing module is specifically configured to:

[0076] The total dischargeable power of the power battery corresponding to the test vehicle under each test condition and the power consumption per kilometer are input into the second formula to calculate the driving range of the test vehicle under each test condition, wherein the second formula is:

[0077]

[0078] Among them, D R is the driving range of the test vehicle under each test condition, E battery (all) is the total dischargeable power of the power battery corresponding to the test vehicle under each test condition, and EC is the power consumption per kilometer corresponding to the test vehicle under each test condition.

[0079] Optionally, the device for rapidly testing the driving range of a pure electric vehicle under multiple working conditions further includes a third calculation module, which is used to:

[0080] Control the external AC charging pile to charge the test vehicle to full power, and record the total amount of electricity charged by the external charging pile;

[0081] Substitute the total power and the driving range of the test vehicle under the first / second / third / fourth test conditions into the third formula to calculate the power consumption per kilometer of the test vehicle under each test condition based on the external power grid, wherein the third formula is:

[0082]

[0083] Among them, EC PG E is the power consumption per kilometer of the test vehicle under various test conditions based on the external power grid, AC It represents the total amount of electricity charged by the external charging pile after the test. R Indicates the driving range of the test vehicle under various test conditions.

[0084] In a third aspect, the present invention also provides a device for rapidly testing the driving range under multiple operating conditions of a pure electric vehicle, the device comprising a processor, a memory, and a program for rapidly testing the driving range under multiple operating conditions of a pure electric vehicle stored in the memory and executable by the processor, wherein when the program for rapidly testing the driving range under multiple operating conditions of a pure electric vehicle is executed by the processor, the steps of the method for rapidly testing the driving range under multiple operating conditions of a pure electric vehicle as described above are implemented.

[0085] The present invention provides a method, device and equipment for quickly testing the driving range of a pure electric vehicle under multiple working conditions. The method for quickly testing the driving range of a pure electric vehicle under multiple working conditions includes: controlling a fully charged test vehicle to run in sequence under each test working condition and then quickly discharge; recording test data of the test vehicle under each test working condition; based on the test data, calculating the total amount of electricity that can be discharged by the power battery corresponding to the test vehicle under each test working condition and the power consumption per kilometer; based on the total amount of electricity that can be discharged by the power battery corresponding to the test vehicle under each test working condition and the power consumption per kilometer, calculating the driving range of the test vehicle under each test working condition. The present invention combines each test working condition and completes the test in one discharge cycle, and its test cycle is short, and the corresponding manpower and resource costs of its test are also low. On the basis of achieving the goal of quickly testing the driving range under each working condition, the accuracy of the determined driving range data under each working condition is also guaranteed. BRIEF DESCRIPTION OF THE DRAWINGS

[0086] Figure 1 It is a schematic diagram of the hardware structure of a device for rapidly testing the driving range of a pure electric vehicle under multiple working conditions involved in an embodiment of the present invention;

[0087] Figure 2 It is a flow chart of an embodiment of a method for quickly testing the driving range of a pure electric vehicle under multiple working conditions according to the present invention;

[0088] Figure 3 It is a flow chart of another embodiment of a method for quickly testing the driving range of a pure electric vehicle under multiple working conditions of the present invention;

[0089] Figure 4 A schematic diagram of a single discharge cycle rapid test process of an embodiment of a method for rapid testing the driving range of a pure electric vehicle under multiple working conditions of the present invention;

[0090] Figure 5 It is a flow chart of another embodiment of a method for quickly testing the driving range of a pure electric vehicle under multiple working conditions according to the present invention;

[0091] Figure 6 The figure is a functional module diagram of an embodiment of a device for rapidly testing the driving range of a pure electric vehicle under multiple working conditions according to the present invention.

[0092] The realization of the purpose, functional features and advantages of the present invention will be further explained in conjunction with embodiments and with reference to the accompanying drawings. DETAILED DESCRIPTION

[0093] It should be understood that the specific embodiments described herein are only used to explain the present invention, and are not used to limit the present invention.

[0094] In a first aspect, an embodiment of the present invention provides a device for quickly testing the driving range of a pure electric vehicle under multiple working conditions.

[0095] Reference Figure 1 , Figure 1 The hardware structure diagram of the pure electric vehicle's driving range rapid test equipment under multiple working conditions involved in the embodiment of the present invention. In the embodiment of the present invention, the pure electric vehicle's driving range rapid test equipment under multiple working conditions may include a processor 1001 (such as a central processing unit, CPU), a communication bus 1002, a user interface 1003, a network interface 1004, and a memory 1005. Among them, the communication bus 1002 is used to realize the connection and communication between these components; the user interface 1003 may include a display screen (Display), an input unit such as a keyboard (Keyboard); the network interface 1004 may optionally include a standard wired interface, a wireless interface (such as a wireless fidelity WIreless-FIdelity, WI-FI interface); the memory 1005 may be a high-speed random access memory (random access memory, RAM), or a stable memory (non-volatile memory), such as a disk storage, and the memory 1005 may optionally be a storage device independent of the aforementioned processor 1001. Those skilled in the art will understand that Figure 1 The hardware structure shown in the figure does not constitute a limitation of the present invention, and may include more or less components than those shown in the figure, or combine certain components, or arrange the components differently.

[0096] Continue to refer to Figure 1 , Figure 1 The memory 1005 as a computer storage medium may include an operating system, a network communication module, a user interface module, and a pure electric vehicle driving range rapid test program under multiple working conditions. The processor 1001 may call the pure electric vehicle driving range rapid test program under multiple working conditions stored in the memory 1005, and execute the pure electric vehicle driving range rapid test method under multiple working conditions provided by the embodiment of the present invention.

[0097] In a second aspect, an embodiment of the present invention provides a method for quickly testing the driving range of a pure electric vehicle under multiple operating conditions.

[0098] Reference Figure 2 , Figure 2 The present invention is a flowchart of an embodiment of a method for quickly testing the driving range of a pure electric vehicle under multiple working conditions.

[0099] In one embodiment of a method for rapidly testing the driving range of a pure electric vehicle under multiple operating conditions of the present invention, the method for rapidly testing the driving range of a pure electric vehicle under multiple operating conditions comprises:

[0100] Step S10, controlling the fully charged test vehicle to run in sequence under each test condition and then perform rapid discharge;

[0101] Step S20, recording the test data of the test vehicle under each test condition;

[0102] Step S30, based on the test data, calculating the total dischargeable power and power consumption per kilometer of the power battery corresponding to the test vehicle under each test condition;

[0103] Step S40, based on the total dischargeable power of the power battery corresponding to the test vehicle under each test condition and the power consumption per kilometer, the driving range of the test vehicle under each test condition is calculated.

[0104] In this embodiment, considering the existing technology of pure electric vehicle mileage test under multiple working conditions, the test cycle is long, and a large amount of test resources and manpower are required during the period, resulting in a relatively high test cost. This leads to the fact that only normal temperature mileage tests are generally carried out at present, while the mileage tests under the use scenarios of low temperature heating, high temperature air conditioning, high speed and constant speed, which drivers are more concerned about in actual driving, are rare, and cannot meet the needs of consumers. Therefore, this application uses the above-mentioned scenario conditions as test conditions, and the vehicle is prepared for the corresponding test and fully charged. The specific test preparation includes: (1) road resistance drum simulation setting, the simulated resistance is the resistance of the vehicle sliding on the road under normal temperature conditions, and the chassis dynamometer can simulate and load the drum road resistance according to GB / T18386.1-2021; (2) current sensor and voltage sensor layout, including current and voltage monitoring of the power battery bus, motor controller, DCDC output, PTC and electric compressor, and the current measurement device adopts a high-precision current clamp with a test accuracy of ≤0.3% rdg, and the voltage measurement device has a test accuracy of ≤0.1% rdg. The current and voltage test frequency is ≥20HZ, and it has the functions of multiple channel current and voltage synchronous testing and integral calculation; (3) temperature sensor layout, in accordance with GB / T18386.1-2021, the temperature measurement point on the headrest side of the cockpit is arranged, and the air outlet is equipped after closing, and the temperature sensors of the four air-conditioning outlets and the reducer oil temperature sensor are arranged. The four front air-conditioning outlets are opened to the maximum, and the wind direction is centered. The temperature sensor test accuracy is ≤0.5℃.

[0105] After the test preparation is completed and the battery is fully charged, the fully charged vehicle is controlled to run in sequence under each test condition in a single discharge cycle and then discharged quickly. Among them, each test condition corresponds to the CLTC-P speed condition driving power consumption test in a normal temperature environment, the CLTC-P speed condition driving power consumption test in a high temperature environment, the normal temperature environment high-speed constant speed driving power consumption test, and the low temperature environment CLTC-P speed condition driving power consumption test. The time cycle of the overall test can be shortened by the subsequent low temperature environment discharge test and the normal temperature environment remaining discharge capacity test. The test data of the test vehicle under the above test conditions are recorded throughout the test. Based on the above test data, the total power and power consumption per kilometer corresponding to the test vehicle under each test condition can be calculated. The above test data include vehicle speed, mileage, power battery bus, motor controller, DCDC output, and voltage and current of the electric compressor, cockpit temperature measurement point, air conditioning outlet temperature, etc. Based on the total power and power consumption per kilometer under the above test conditions, the driving range of the test vehicle under each test condition can be calculated. Among them, the above-mentioned testing method can complete various test conditions in one discharge cycle, and its test cycle is short and the corresponding test cost is also low.

[0106] Further, in one embodiment, referring to Figure 3 , the step S10 comprises:

[0107] Step S101, controlling a fully charged test vehicle to operate under a first test condition;

[0108] Step S102, controlling the test vehicle that has completed the first test condition to operate under a second test condition after being immersed in a second preset temperature range at a preset humidity and preset light intensity for a first preset time, wherein the lower limit of the second preset temperature range is greater than the upper limit of the first preset temperature range;

[0109] Step S103, controlling the test vehicle that has completed the second test condition to cool down with a fan at a preset wind speed within a first preset temperature range for a second preset time and then to operate under a third test condition;

[0110] Step S104, controlling the test vehicle after running the third test condition to cool the test vehicle at a third preset temperature with a fan at a preset wind speed for a second preset time and to operate under a fourth test condition after the vehicle is immersed until the reducer oil temperature reaches a fourth preset temperature, wherein the third preset temperature is lower than the fourth preset temperature, and the fourth preset temperature is lower than the lower limit of the first preset temperature range;

[0111] Step S105, controlling the test vehicle that has completed the fourth test condition to turn off the air conditioner and then operate under the first discharge condition;

[0112] Step S106, controlling the ambient temperature of the test vehicle after running the first discharge condition to rise to the first preset temperature range within the third preset time, and running under the second discharge condition after the ambient temperature is within the first preset temperature range for a fourth preset time.

[0113] In this embodiment, since the environmental control conditions of each test condition are different, the fully charged test vehicle is controlled to run in sequence under each test condition and then quickly discharged, and the switching of the test environment temperature, humidity, and light intensity of the vehicle corresponding to different test conditions needs to be completed. Among them, the switching of the environmental temperature includes heating and cooling. The vehicle switches from a normal temperature environment to a high temperature environment by adjusting the ambient temperature and humidity of the environmental chamber in the test environment, turning on the sunlight simulation device to simulate the light intensity, and immersing the vehicle for a period of time. The vehicle switches from a high temperature environment to a normal temperature environment by adjusting the ambient temperature of the environmental chamber in the test environment, turning off the sunlight simulation device, and forced cooling by a fan for a period of time. The vehicle switches from a normal temperature environment to a low temperature environment by adjusting the ambient temperature of the environmental chamber in the test environment, and forced cooling by a fan for a period of time, and then immersing the vehicle for a period of time. The vehicle switches from a low temperature environment to a normal temperature environment by adjusting the ambient temperature of the environmental chamber in the test environment and immersing the vehicle for a period of time.

[0114] The environmental chamber can simulate the ambient temperature and humidity during vehicle testing. The simulated temperature range is -20°C to 40°C, and the relative humidity is 20% to 80%. It has the ability to quickly cool down, and the temperature can drop from 23°C to -10°C within 10 minutes. The sunlight simulation device can simulate the ambient light of the vehicle during high temperature testing. The maximum light intensity simulated by the sunlight simulation device is ≥1200w / m 2 The fan can simulate the air flow of the vehicle during driving. The maximum wind speed of the fan is ≥120km / h and the outlet area is ≥0.5m 2 , width or diameter greater than 1m, the fan speed should follow the vehicle speed. During the vehicle immersion process, the temperature of the test environment chamber, the light intensity based on the top of the vehicle, and the humidity will be controlled, and the window glass, doors, trunk door, and sunroof shades will remain closed during the vehicle immersion process.

[0115] Reference Figure 4, this embodiment scheme is tested in the order of normal temperature environment standard working condition driving power consumption test, high temperature environment standard working condition driving power consumption test, normal temperature environment high-speed constant speed driving power consumption test, low temperature environment standard working condition driving power consumption test, low temperature environment discharge test, normal temperature environment discharge test. Therefore, the specific steps of controlling the fully charged test vehicle to run in each test condition in sequence include: firstly controlling the fully charged test vehicle to run in the first test condition, then controlling the test vehicle that has run the first test condition to run in the second test condition after being immersed in a second preset temperature range with a preset humidity and a preset light intensity for a first preset time (such as immersing the vehicle for 1h at 30±2℃, humidity (50±5)%, and light intensity (850±45)w / m^2), and then controlling the test vehicle that has run the second test condition to cool the vehicle with a fan at a preset wind speed within the first preset temperature range for a first preset time. After the second preset time (such as at 23±3℃, the fan speed is maintained at 60km / h, and the vehicle is forced to cool for 30min), it is operated under the third test condition. Finally, the test vehicle that has completed the third test condition is controlled to cool the fan at the third preset temperature with the preset wind speed for the second preset time and soak the vehicle until the reducer oil temperature reaches the fourth preset temperature (such as in a -10℃ environment, the fan speed is maintained at 60km / h, the vehicle is forced to cool for 30min, and then soak the vehicle for 0.5-1.5h until the reducer oil temperature reaches -7℃), and then it is operated under the fourth test condition (such as -7±2℃). Among them, the lower limit value of the second preset temperature range is greater than the upper limit value of the first preset temperature range, the third preset temperature is lower than the fourth preset temperature, and the fourth preset temperature is less than the lower limit value of the first preset temperature range.

[0116] After the fully charged test vehicle is controlled to run in each test condition in sequence, a rapid discharge is performed. Specifically, the test vehicle that has run the fourth test condition is first controlled to turn off the air conditioner and then run under the first discharge condition. Then, the ambient temperature of the test vehicle that has run the first discharge condition is controlled to rise to the first preset temperature range within the third preset time, and after the vehicle is immersed in the ambient temperature of the first preset temperature range for the fourth preset time (such as slowly raising the temperature of the environmental chamber where the vehicle is located from -7°C to 23°C within 4 hours, and immersing the vehicle at 23°C for 6 hours), it is operated under the second discharge condition. In the above manner, each test condition can be combined and tested in one discharge cycle. The overall test cycle is shorter than testing multiple test conditions separately in multiple discharge cycles, and the manpower and resource costs of the test are less, so that the mileage data under multiple usage scenarios such as normal temperature, high temperature, low temperature, normal temperature and high speed can be obtained more easily to better meet user needs.

[0117] Furthermore, in one embodiment, the first test condition is: the ambient temperature of the test vehicle is within a first preset temperature range, and the test vehicle repeatedly runs a preset number of CLTC-P speed conditions;

[0118] The second test condition is: the ambient temperature of the test vehicle is within a second preset temperature range, the ambient light intensity is a preset light intensity, the ambient humidity is a preset humidity, the air conditioner of the test vehicle is turned on in a first preset manner, and the test vehicle repeatedly runs a preset number of CLTC-P speed conditions;

[0119] The third test condition is: the ambient temperature of the test vehicle is within a first preset temperature range, and the test vehicle runs at a preset speed for a first preset time;

[0120] The fourth test condition is: the ambient temperature of the test vehicle is a fourth preset temperature, the air conditioner of the test vehicle is turned on in a second preset manner, and the test vehicle repeatedly runs a preset CLTC-P speed condition;

[0121] The first discharge condition is: the ambient temperature of the test vehicle is a fourth preset temperature, and the test vehicle runs at a preset speed until the vehicle speed cannot be maintained at a speed less than a preset threshold value than the preset vehicle speed;

[0122] The second discharge condition is: the ambient temperature of the test vehicle is within a first preset temperature range, and the test vehicle runs at a preset speed until the vehicle speed cannot be maintained at a speed that is less than a preset threshold value than the preset speed.

[0123] In this embodiment, the first test condition corresponds to the power consumption test of the standard operating condition under normal temperature environment, the second test condition corresponds to the power consumption test of the standard operating condition of air conditioning under high temperature environment, the third test condition corresponds to the power consumption test of high-speed constant speed driving under normal temperature environment, the fourth test condition corresponds to the power consumption test of the standard operating condition of heating under low temperature environment, the first discharge condition corresponds to the rapid discharge under low temperature environment, and the second discharge condition corresponds to the rapid discharge under normal temperature environment. Among them, the standard operating condition of passenger cars is the CLTC-P speed condition.

[0124] Therefore, the first test condition is that the ambient temperature of the test vehicle is within the first preset temperature range (23±3°C), and the test vehicle repeatedly runs the preset CLTC-P speed condition. At this time, the vehicle driving mode is the most economical driving mode that can maintain the CLTC-P speed condition vehicle speed, and the braking energy recovery intensity is the maximum. After running under the above first test condition, record the power battery charge change E corresponding to each CLTC-P speed condition test cycle battery (c) The recovered power E at the motor controller end recovery (c), cycle mileage D(c), c is the number of cycles. Among them, the recovered power E at the motor controller end corresponding to each CLTC-P speed condition test cycle recovery (c), when (E recovery (c+1)-E recovery (c)) / Erecovery (c) < 5%, then the number of CLTC-P speed conditions is determined to be C+1. After C+1 CLTC-P speed conditions are completed, the power consumption test under the first test condition is stopped, and 3≤C+1≤5. When the first test condition is completed, the total power battery charge change E under the power consumption test under the first test condition is obtained. battery (NT).

[0125] The second test condition is, for example, that the ambient temperature of the test vehicle is in the second preset temperature range (30±2°C), the ambient light intensity is the preset light intensity (light intensity (850±45)w / m^2), the ambient humidity is the preset humidity (humidity (50±5)%), and the air conditioner of the test vehicle is turned on in the first preset mode. The first preset mode of turning on the air conditioner is, for example, the initial setting is the strongest cooling mode, the lowest temperature, the largest air volume, the air circulation, and the air conditioner outlet blowing mode is blowing on the face. After the initial setting is completed, the test vehicle is controlled to repeatedly run the preset CLTC-P speed conditions. When the test vehicle is controlled to repeatedly run the preset CLTC-P speed conditions, when the average temperature of the headrest side measuring point reaches 25°C, the air conditioner setting is adjusted to keep the average temperature of the measuring point at 23-25°C. At this time, the vehicle driving mode is the most economical driving mode that can maintain the CLTC-P speed condition vehicle speed and can ensure the cooling requirements in the cockpit, and the braking energy recovery intensity is the maximum. After running under the above second test condition, record the power battery charge change E of each CLTC-P speed condition corresponding to the test cycle battery (c) The recovered power E at the motor controller end recovery (c), power consumption of compressor E EAC (c), cycle mileage D(c), c is the number of cycles. Among them, the recovered power E at the motor controller end corresponding to each CLTC-P speed condition test cycle recovery (c), when (E recovery (c+1)-E recovery (c)) / E recovery (c)<5% and (E EAC (c+1)-E EAC (c)) / E EAC (c) < 5%, then the number of CLTC-P speed conditions is determined to be C+1. After C+1 CLTC-P speed conditions are completed, the power consumption test under the second test condition is stopped, and 3≤C+1≤5. When the second test condition is completed, the total power battery charge change E under the power consumption test under the second test condition is obtained. battery (HT).

[0126] The third test condition is that the ambient temperature of the test vehicle is within the first preset temperature range (23±3°C), and the test vehicle runs at a preset speed (such as 100 km / h) for a first preset time. Record the total power battery charge change E of the power consumption test under the third test condition. battery (CS), mileage traveled D(CS).

[0127] The fourth test condition is, for example, that the ambient temperature of the test vehicle is the fourth preset temperature (-7±2℃), and the air conditioner of the test vehicle is turned on in the second preset mode. The second preset mode of turning on the air conditioner is, for example, initially set to the strongest heating mode, the highest temperature, the largest air volume, the air circulation outside, and the air-conditioning outlet blowing mode is foot blowing. After the initial setting is completed, the test vehicle is controlled to repeatedly run the preset CLTC-P speed conditions. When the test vehicle is controlled to repeatedly run the preset CLTC-P speed conditions, when the average temperature of the measuring point on the headrest side reaches 20℃, the air conditioning setting is adjusted to keep the average temperature of the measuring point at 20-22℃. At this time, the vehicle driving mode is the most economical driving mode that can maintain the CLTC-P speed condition speed and ensure the heating requirements in the cockpit, and the braking energy recovery intensity is the maximum. After running under the above-mentioned fourth test condition, record the power battery charge change E corresponding to each CLTC-P speed condition test cycle. battery (c) The recovered power E at the motor controller end recovery (c) Power consumption E of heat pump air conditioner compressor or high pressure heating component PTC EAC (c), cycle mileage D(c), c is the number of cycles. Among them, the recovered power E at the motor controller end corresponding to each CLTC-P speed condition test cycle recovery (c), when (E recovery (c+1)-E recovery (c)) / E recovery (c)<5% and (E EAC (c+1)-E EAC (c)) / E EAC (c) < 5%, then the number of CLTC-P speed conditions is determined to be C+1. After C+1 CLTC-P speed conditions are completed, the power consumption test under the fourth test condition is stopped, and 3≤C+1≤5. When the fourth test condition is completed, the total power battery charge change E under the power consumption test under the fourth test condition is obtained. battery (LT).

[0128] In the first discharge condition, if the ambient temperature of the test vehicle is the fourth preset temperature (-7±2°C), the test vehicle runs at a preset speed (such as 100 km / h) until the vehicle speed cannot be maintained at a speed less than the preset threshold value, and the total power battery charge change E under the first discharge condition is recorded. battery(HS). In the second discharge condition, if the ambient temperature of the test vehicle is within the first preset temperature range (23±3°C), the test vehicle runs at a preset speed (such as 100km / h) until the vehicle speed cannot be maintained at a speed less than the preset threshold value, and the total power battery charge change E under the second discharge condition is recorded. battery (RM).

[0129] Among them, under the fourth test condition and the first discharge condition, the road resistance simulated by the drum is the resistance of the vehicle sliding on the road under normal temperature conditions multiplied by 1.1 times. The speed error between the actual vehicle speed under the first / second / fourth test conditions and the standard CLTC-P speed condition is ≤1.5km / h, the allowable error of the actual vehicle speed under the third test condition is <2km / h, and the speed threshold of the first discharge condition and the second discharge condition is 10km / h.

[0130] Further, in one embodiment, referring to Figure 5 , the step S30 comprises:

[0131] Step S301, calculating the total dischargeable power of the power battery corresponding to the test vehicle under each test condition based on the power battery power change under each test condition, wherein the total dischargeable power of the power battery corresponding to the test vehicle under the first / second / third test condition is the sum of the power battery power change under each test condition and each discharge condition, and the total dischargeable power of the power battery corresponding to the test vehicle under the fourth test condition is the sum of the power battery power change under each test condition and the first discharge condition;

[0132] Step S302, based on the power battery charge change of the test vehicle corresponding to each CLTC-P speed condition in the first / second / fourth test condition, the mileage, and the total dischargeable power of the power battery corresponding to the test vehicle under the first / second / fourth test condition, calculate the power consumption per kilometer corresponding to the test vehicle under the first / second / fourth test condition;

[0133] Step S303, based on the power change of the power battery of the test vehicle under the third test condition and the mileage, the power consumption per kilometer corresponding to the test vehicle under the third test condition is calculated.

[0134] In this embodiment, the first test condition corresponds to driving under the CLTC-P speed condition at normal temperature, the second test condition corresponds to driving under the CLTC-P speed condition at high temperature, the third test condition is high-speed constant-speed driving at normal temperature, and the fourth test condition corresponds to driving under the CLTC-P speed condition at low temperature. The total dischargeable amount of the power battery corresponding to the test vehicle under the first / second / third test conditions is the sum of the change in the power battery amount under each test condition and each discharge condition, and the total dischargeable amount of the power battery corresponding to the test vehicle under the fourth test condition is the sum of the change in the power battery amount under each test condition and the first discharge condition.

[0135] Based on the power battery charge change and mileage of the test vehicle corresponding to each CLTC-P speed condition in the first / second / fourth test condition and the total dischargeable power of the power battery corresponding to the test vehicle under the first / second / fourth test condition, the power consumption per kilometer of the test vehicle under the first / second / fourth test condition can be calculated. Based on the power battery charge change and mileage of the test vehicle corresponding to the third test condition, the power consumption per kilometer of the test vehicle under the third test condition can be calculated.

[0136] Furthermore, in one embodiment, the step of calculating the power consumption per kilometer of the test vehicle under the first / second / fourth test condition based on the power battery power change amount of the test vehicle corresponding to each CLTC-P speed condition in the first / second / fourth test condition, the mileage, and the total dischargeable power of the power battery corresponding to the test vehicle under the first / second / fourth test condition comprises:

[0137] The power battery power change, mileage, and total power that can be discharged from the power battery of the test vehicle corresponding to each CLTC-P speed condition in the first / second / fourth test condition are input into a preset calculation model to calculate the power consumption per kilometer of the test vehicle under the first / second / fourth test condition, wherein the preset calculation model is:

[0138]

[0139]

[0140] Where c is one of the CLTC-P speed conditions under the first / second / fourth test conditions, E battery (c) is the change in the power battery charge of the test vehicle corresponding to one of the CLTC-P speed conditions in the first / second / fourth test conditions, D(c) is the mileage of the test vehicle corresponding to one of the CLTC-P speed conditions in the first / second / fourth test conditions, k(c) is the power consumption weighting coefficient corresponding to one of the CLTC-P speed conditions in the first / second / fourth test conditions, E battery(all) is the total dischargeable power of the power battery corresponding to the test vehicle under the first / second / fourth test conditions, n is the number of CLTC-P speed conditions, 3≤n≤5.

[0141] In this embodiment, since the power battery charge change of the test vehicle corresponding to each CLTC-P speed condition in the first / second / fourth test condition is different, when calculating the total dischargeable power of the power battery corresponding to the test vehicle under the first / second / fourth test condition, weighted processing is required to improve the accuracy of the power consumption calculation. Specifically, the above-mentioned step of calculating the power consumption per kilometer corresponding to the test vehicle under the first / second / fourth test condition based on the power battery charge change of the test vehicle corresponding to each CLTC-P speed condition in the first / second / fourth test condition, the mileage, and the total dischargeable power of the power battery corresponding to the test vehicle under the first / second / fourth test condition specifically includes: inputting the power battery charge change of the test vehicle corresponding to each CLTC-P speed condition in the first / second / fourth test condition, the mileage, and the total dischargeable power of the power battery corresponding to the test vehicle under the first / second / fourth test condition into a preset calculation model, and calculating the power consumption per kilometer corresponding to the test vehicle under the first / second / fourth test condition, wherein the preset calculation model is:

[0142]

[0143]

[0144] Where c is one of the CLTC-P speed conditions under the first / second / fourth test conditions, E battery (c) is the change in the power battery charge of the test vehicle corresponding to one of the CLTC-P speed conditions in the first / second / fourth test conditions, D(c) is the mileage of the test vehicle corresponding to one of the CLTC-P speed conditions in the first / second / fourth test conditions, k(c) is the power consumption weighting coefficient corresponding to one of the CLTC-P speed conditions in the first / second / fourth test conditions, E battery (all) is the total dischargeable power of the power battery corresponding to the test vehicle under the first / second / fourth test conditions, n is the number of CLTC-P speed conditions, 3≤n≤5.

[0145] Furthermore, in one embodiment, the step of calculating the power consumption per kilometer corresponding to the test vehicle under the third test condition based on the power change amount and the mileage of the power battery of the test vehicle under the third test condition comprises:

[0146] The power consumption per kilometer of the test vehicle under the third test condition is calculated by inputting the power change of the power battery of the test vehicle under the third test condition and the mileage into the first formula, where the first formula is:

[0147]

[0148] Among them, EC is the power consumption per kilometer of the test vehicle under the third test condition, E battery (CS) is the change in charge of the power battery of the test vehicle under the third test condition, and D(CS) is the mileage of the test vehicle under the third test condition.

[0149] In this embodiment, since the third test condition is high-speed constant speed driving under normal temperature, the power consumption per kilometer of the test vehicle under the third test condition is calculated based on the power change of the power battery of the test vehicle under the third test condition and the mileage. Specifically, the total dischargeable power of the power battery of the test vehicle under the third test condition and the mileage are input into the first formula to calculate the power consumption per kilometer of the test vehicle under the third test condition, wherein the first formula is:

[0150]

[0151] Among them, EC is the power consumption per kilometer of the test vehicle under the third test condition, E battery (CS) is the change in charge of the power battery of the test vehicle under the third test condition, and D(CS) is the mileage of the test vehicle under the third test condition.

[0152] Further, in one embodiment, the step S40 includes:

[0153] The total dischargeable power of the power battery corresponding to the test vehicle under each test condition and the power consumption per kilometer are input into the second formula to calculate the driving range of the test vehicle under each test condition, wherein the second formula is:

[0154]

[0155] Among them, D R is the driving range of the test vehicle under each test condition, E battery (all) is the total dischargeable power of the power battery corresponding to the test vehicle under each test condition, and EC is the power consumption per kilometer corresponding to the test vehicle under each test condition.

[0156] In this embodiment, the step of calculating the driving range of the test vehicle under each test condition specifically includes: inputting the total dischargeable power of the power battery corresponding to the test vehicle under each test condition and the power consumption per kilometer into a second formula to calculate the driving range of the test vehicle under each test condition, wherein the second formula is:

[0157]

[0158] Among them, D R is the driving range of the test vehicle under each test condition, E battery (all) is the total dischargeable power of the power battery corresponding to the test vehicle under each test condition, and EC is the power consumption per kilometer corresponding to the test vehicle under each test condition. Compared with the existing conventional test method, the driving range test method of the present embodiment is based on the realization of rapid testing, and the overall error of the driving range data determined by the conventional test method can be controlled within 5% based on the driving range data under multiple use scenarios such as normal temperature, high temperature, low temperature, normal temperature and high speed, etc., that is, the accuracy can also be guaranteed. Specifically, the driving range data obtained by the conventional test method and the rapid test method of the present embodiment are shown in Table 1 below.

[0159] Table 1

[0160]

[0161]

[0162] Further, in one embodiment, after step S10, the following steps are included:

[0163] Control the external AC charging pile to charge the test vehicle to full power, and record the total amount of electricity charged by the external charging pile;

[0164] Substitute the total power and the driving range of the test vehicle under the first / second / third / fourth test conditions into the third formula to calculate the power consumption per kilometer of the test vehicle under each test condition based on the external power grid, wherein the third formula is:

[0165]

[0166] Among them, EC PG E is the power consumption per kilometer of the test vehicle under various test conditions based on the external power grid, AC It represents the total amount of electricity charged by the external charging pile after the test. R Indicates the driving range of the test vehicle under various test conditions.

[0167] In this embodiment, since there will be a certain error between the power consumption per 100 kilometers based on the charging amount of the charging pile and the power consumption per 100 kilometers based on the discharge amount of the power battery, the power consumption based on the charging pile is more valuable for reference for consumers. Therefore, after controlling the fully charged test vehicle to run in sequence under each test condition and then perform a quick discharge step, not only the mileage under each test condition in the battery discharge cycle will be calculated, but also the external AC charging pile will be controlled to charge the test vehicle to a fully charged state, and the total amount of electricity charged by the external charging pile will be recorded. The total amount of electricity and the mileage of the test vehicle under the first / second / third / fourth test condition are substituted into the third formula to calculate the power consumption per kilometer of the test vehicle under each test condition based on the external power grid, wherein the third formula is:

[0168]

[0169] Among them, EC PG E is the power consumption per kilometer of the test vehicle under various test conditions based on the external power grid, AC It represents the total amount of electricity charged by the external charging pile after the test. R Indicates the driving range of the test vehicle under various test conditions.

[0170] In this embodiment, a method for rapidly testing the driving range of a pure electric vehicle under multiple working conditions is provided, including: controlling a fully charged test vehicle to run in sequence under each test condition and then rapidly discharge; recording the test data of the test vehicle under each test condition; based on the test data, calculating the total amount of electricity that can be discharged from the power battery corresponding to the test vehicle under each test condition and the power consumption per kilometer; based on the total amount of electricity that can be discharged from the power battery corresponding to the test vehicle under each test condition and the power consumption per kilometer, calculating the driving range of the test vehicle under each test condition. The present invention combines each test condition and completes the test in one discharge cycle, and its test cycle is short, and the corresponding manpower and resource costs of its test are also low. In addition, on the basis of achieving rapid testing of the driving range under each working condition, the accuracy of the determined driving range data under each working condition is also guaranteed.

[0171] In a third aspect, an embodiment of the present invention further provides a device for quickly testing the driving range of a pure electric vehicle under multiple working conditions.

[0172] Reference Figure 6 , a schematic diagram of the functional modules of an embodiment of a device for rapidly testing the driving range of a pure electric vehicle under multiple working conditions.

[0173] In this embodiment, the device for rapidly testing the driving range of a pure electric vehicle under multiple working conditions comprises:

[0174] The control module 10 is used to control the fully charged test vehicle to run in sequence under each test condition and then perform rapid discharge;

[0175] The recording module 20 is used to record the test data of the test vehicle under various test conditions;

[0176] A first calculation module 30 is used to calculate the total dischargeable power and power consumption per kilometer of the power battery corresponding to the test vehicle under each test condition based on the test data;

[0177] The second calculation module 40 is used to calculate the driving range of the test vehicle under each test condition based on the total dischargeable power of the power battery corresponding to the test vehicle under each test condition and the power consumption per kilometer.

[0178] Among them, the functional implementation of each module in the above-mentioned pure electric vehicle's driving range rapid testing device under multiple working conditions corresponds to the various steps in the above-mentioned pure electric vehicle's driving range rapid testing method under multiple working conditions embodiment, and its functions and implementation processes will not be repeated here one by one.

[0179] It should be noted that, in this article, the terms "include", "comprises" or any other variations thereof are intended to cover non-exclusive inclusion, so that a process, method, article or system including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or system. In the absence of further restrictions, an element defined by the sentence "comprises a ..." does not exclude the existence of other identical elements in the process, method, article or system including the element.

[0180] The serial numbers of the above embodiments of the present invention are only for description and do not represent the advantages or disadvantages of the embodiments.

[0181] Through the description of the above implementation methods, those skilled in the art can clearly understand that the above-mentioned embodiment methods can be implemented by means of software plus a necessary general hardware platform, and of course by hardware, but in many cases the former is a better implementation method. Based on such an understanding, the technical solution of the present invention is essentially or the part that contributes to the prior art can be embodied in the form of a software product, which is stored in a storage medium (such as ROM / RAM, magnetic disk, optical disk) as described above, and includes a number of instructions for a terminal device to execute the methods described in each embodiment of the present invention.

[0182] The above are only preferred embodiments of the present invention, and are not intended to limit the patent scope of the present invention. Any equivalent structure or equivalent process transformation made using the contents of the present invention specification and drawings, or directly or indirectly applied in other related technical fields, are also included in the patent protection scope of the present invention.

Claims

1. A method for quickly testing the driving range of a pure electric vehicle under multiple working conditions, characterized in that: The method for rapidly testing the driving range of a pure electric vehicle under multiple working conditions comprises: Control the fully charged test vehicle to run under each test condition in sequence and then discharge it quickly; Record the test data of the test vehicle under each test condition; Based on the test data, the total dischargeable power of the power battery corresponding to the test vehicle and the power consumption per kilometer under each test condition are calculated; Based on the total dischargeable power of the power battery corresponding to the test vehicle under each test condition and the power consumption per kilometer, the driving range of the test vehicle under each test condition is calculated; The step of controlling the fully charged test vehicle to run in sequence under each test condition and then perform rapid discharge comprises: Controlling the fully charged test vehicle to operate under a first test condition; Controlling the test vehicle that has completed the first test condition to be immersed in a second preset temperature range at a preset humidity and a preset light intensity for a first preset time and then to be operated under a second test condition, wherein the lower limit of the second preset temperature range is greater than the upper limit of the first preset temperature range; Controlling the test vehicle that has completed the second test condition to cool down for a second preset time with a fan at a preset wind speed within a first preset temperature range and then to operate under a third test condition; Controlling the test vehicle that has completed the third test condition to cool the vehicle at a third preset temperature with a fan at a preset wind speed for a second preset time and to operate under a fourth test condition after the vehicle is immersed until the reducer oil temperature reaches a fourth preset temperature, wherein the third preset temperature is lower than the fourth preset temperature, and the fourth preset temperature is lower than the lower limit of the first preset temperature range; After the test vehicle has completed the fourth test condition, the test vehicle is controlled to turn off the air conditioner and then operate under the first discharge condition; The ambient temperature of the test vehicle after the first discharge condition is controlled to rise to the first preset temperature range within a third preset time, and the vehicle is operated under the second discharge condition after the ambient temperature is within the first preset temperature range for a fourth preset time.

2. The method for rapidly testing the driving range of a pure electric vehicle under multiple operating conditions as claimed in claim 1, characterized in that: The first test condition is: the ambient temperature of the test vehicle is within a first preset temperature range, and the test vehicle repeatedly runs a preset CLTC-P speed condition; The second test condition is: the ambient temperature of the test vehicle is within a second preset temperature range, the ambient light intensity is a preset light intensity, the ambient humidity is a preset humidity, the air conditioner of the test vehicle is turned on in a first preset manner, and the test vehicle repeatedly runs a preset number of CLTC-P speed conditions; The third test condition is: the ambient temperature of the test vehicle is within a first preset temperature range, and the test vehicle runs at a preset speed for a first preset time; The fourth test condition is: the ambient temperature of the test vehicle is a fourth preset temperature, the air conditioner of the test vehicle is turned on in a second preset manner, and the test vehicle repeatedly runs a preset CLTC-P speed condition; The first discharge condition is: the ambient temperature of the test vehicle is a fourth preset temperature, and the test vehicle runs at a preset speed until the vehicle speed cannot be maintained at a speed less than a preset threshold value than the preset vehicle speed; The second discharge condition is: the ambient temperature of the test vehicle is within a first preset temperature range, and the test vehicle runs at a preset speed until the vehicle speed cannot be maintained at a speed that is less than a preset threshold value than the preset speed.

3. The method for rapidly testing the driving range of a pure electric vehicle under multiple operating conditions as claimed in claim 2, characterized in that: The step of calculating the total dischargeable power and power consumption per kilometer of the power battery corresponding to the test vehicle under each test condition based on the test data comprises: The total dischargeable power of the power battery corresponding to the test vehicle under each test condition is calculated based on the power battery charge change under each test condition, wherein the total dischargeable power of the power battery corresponding to the test vehicle under the first / second / third test condition is the sum of the power battery charge change under each test condition and each discharge condition, and the total dischargeable power of the power battery corresponding to the test vehicle under the fourth test condition is the sum of the power battery charge change under each test condition and the first discharge condition; Based on the power battery charge change of the test vehicle corresponding to each CLTC-P speed condition in the first / second / fourth test condition, the mileage, and the total dischargeable power of the power battery corresponding to the test vehicle under the first / second / fourth test condition, the power consumption per kilometer corresponding to the test vehicle under the first / second / fourth test condition is calculated; Based on the change in power level of the power battery of the test vehicle corresponding to the third test condition and the mileage, the power consumption per kilometer corresponding to the test vehicle under the third test condition is calculated.

4. The method for rapidly testing the driving range of a pure electric vehicle under multiple operating conditions as claimed in claim 3, characterized in that: The step of calculating the power consumption per kilometer of the test vehicle under the first / second / fourth test condition based on the power battery power change amount of the test vehicle corresponding to each CLTC-P speed condition in the first / second / fourth test condition, the mileage, and the total dischargeable power of the power battery corresponding to the test vehicle under the first / second / fourth test condition comprises: The power battery power change, mileage, and total power that can be discharged from the power battery of the test vehicle corresponding to each CLTC-P speed condition in the first / second / fourth test condition are input into a preset calculation model to calculate the power consumption per kilometer of the test vehicle under the first / second / fourth test condition, wherein the preset calculation model is: Where c is one of the CLTC-P speed conditions under the first / second / fourth test conditions, E battery (c) is the change in the power battery charge of the test vehicle corresponding to one of the CLTC-P speed conditions in the first / second / fourth test conditions, D(c) is the mileage of the test vehicle corresponding to one of the CLTC-P speed conditions in the first / second / fourth test conditions, k(c) is the power consumption weighting coefficient corresponding to one of the CLTC-P speed conditions in the first / second / fourth test conditions, E battery (all) is the total dischargeable power of the power battery corresponding to the test vehicle under the first / second / fourth test conditions, n is the number of CLTC-P speed conditions, 3≤n≤5.

5. The method for rapidly testing the driving range of a pure electric vehicle under multiple operating conditions as claimed in claim 3, characterized in that: The step of calculating the power consumption per kilometer corresponding to the test vehicle under the third test condition based on the power change of the power battery of the test vehicle under the third test condition and the mileage comprises: The power consumption per kilometer of the test vehicle under the third test condition is calculated by inputting the power change of the power battery of the test vehicle under the third test condition and the mileage into the first formula, where the first formula is: Among them, EC is the power consumption per kilometer of the test vehicle under the third test condition, E battery (CS) is the change in charge of the power battery of the test vehicle under the third test condition, and D(CS) is the mileage of the test vehicle under the third test condition.

6. The method for rapidly testing the driving range of a pure electric vehicle under multiple operating conditions as claimed in claim 1, characterized in that: The step of calculating the driving range of the test vehicle under each test condition based on the total dischargeable power of the power battery corresponding to the test vehicle under each test condition and the power consumption per kilometer includes: The total dischargeable power of the power battery corresponding to the test vehicle under each test condition and the power consumption per kilometer are input into the second formula to calculate the driving range of the test vehicle under each test condition, wherein the second formula is: Among them, D R is the driving range of the test vehicle under each test condition, E battery (all) is the total dischargeable power of the power battery corresponding to the test vehicle under each test condition, and EC is the power consumption per kilometer corresponding to the test vehicle under each test condition.

7. The method for rapidly testing the driving range of a pure electric vehicle under multiple operating conditions as claimed in claim 6, characterized in that: After the step of controlling the fully charged test vehicle to run in sequence under each test condition, the method further includes: Control the external AC charging pile to charge the test vehicle to full power, and record the total amount of electricity charged by the external charging pile; Substitute the total power and the driving range of the test vehicle under the first / second / third / fourth test conditions into the third formula to calculate the power consumption per kilometer of the test vehicle under each test condition based on the external power grid, wherein the third formula is: Among them, EC PG E is the power consumption per kilometer of the test vehicle under various test conditions based on the external power grid, AC It represents the total amount of electricity charged by the external charging pile after the test. R Indicates the driving range of the test vehicle under various test conditions.

8. A device for rapidly testing the driving range of a pure electric vehicle under multiple working conditions, characterized in that: The device for rapidly testing the driving range of a pure electric vehicle under multiple working conditions comprises: A control module is used to control the fully charged test vehicle to run in sequence under various test conditions and then discharge quickly; A recording module, used to record the test data of the test vehicle under various test conditions; A first calculation module is used to calculate the total dischargeable power and power consumption per kilometer of the power battery corresponding to the test vehicle under each test condition based on the test data; A second calculation module is used to calculate the driving range of the test vehicle under each test condition based on the total dischargeable power of the power battery corresponding to the test vehicle under each test condition and the power consumption per kilometer; The step of controlling the fully charged test vehicle to run in sequence under each test condition and then perform rapid discharge comprises: Controlling the fully charged test vehicle to operate under a first test condition; Controlling the test vehicle that has completed the first test condition to be immersed in a second preset temperature range at a preset humidity and a preset light intensity for a first preset time and then to be operated under a second test condition, wherein the lower limit of the second preset temperature range is greater than the upper limit of the first preset temperature range; Controlling the test vehicle that has completed the second test condition to cool down for a second preset time with a fan at a preset wind speed within a first preset temperature range and then to operate under a third test condition; Controlling the test vehicle that has completed the third test condition to cool the vehicle at a third preset temperature with a fan at a preset wind speed for a second preset time and to operate under a fourth test condition after the vehicle is immersed until the reducer oil temperature reaches a fourth preset temperature, wherein the third preset temperature is lower than the fourth preset temperature, and the fourth preset temperature is lower than the lower limit of the first preset temperature range; After the test vehicle has completed the fourth test condition, the test vehicle is controlled to turn off the air conditioner and then operate under the first discharge condition; The ambient temperature of the test vehicle after the first discharge condition is controlled to rise to the first preset temperature range within a third preset time, and the vehicle is operated under the second discharge condition after the ambient temperature is within the first preset temperature range for a fourth preset time.

9. A rapid test device for the driving range of a pure electric vehicle under multiple working conditions, characterized in that: The pure electric vehicle's driving range rapid testing device under multiple operating conditions includes a processor, a memory, and a pure electric vehicle's driving range rapid testing program under multiple operating conditions stored in the memory and executable by the processor. When the pure electric vehicle's driving range rapid testing program under multiple operating conditions is executed by the processor, the steps of the pure electric vehicle's driving range rapid testing method under multiple operating conditions as described in any one of claims 1 to 7 are implemented.

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