Apparatus and method for implementing predictive energy management for a vehicle during indoor testing

Abstract

The application relates to a device and method for realizing automobile predictive energy management during indoor testing. The method comprises the following steps: a vehicle is operated in a vehicle drum mode during indoor testing, a special program is operated by using a device for realizing automobile predictive energy management, map information and traffic information coupled with a specified speed curve are sent in a fixed period, in the case that the geographical position of the vehicle is unchanged, the vehicle receives the front road information when running on the road, the automobile predictive energy management is realized during indoor testing, and automobile energy saving is realized. The application greatly shortens the time length of the test of the energy saving effect of the predictive energy management, reduces the test cost, improves the test precision, and is favorable for the development and test authentication of the predictive energy management.

Description

Technical Field

[0001] This invention belongs to the field of automotive new technology research and development, and in particular relates to a device and method for realizing predictive energy management of automobiles during indoor testing. Background Technology

[0002] The rapid development of new energy vehicles, intelligent connected vehicles, and autonomous driving technologies has brought new ideas and provided broad possibilities for the innovative research and development of automotive energy-saving technologies. Predictive energy management (REM) is an intelligent energy management technology developed based on road information ahead of the vehicle, including road map information such as slope, curvature, and speed limits, as well as traffic information such as average speed and congestion index. Depending on the vehicle type, powertrain, and road map information used, REM achieves energy savings of 5-8%, making it a highly effective new technology. However, road testing of REM results in long testing cycles, high costs, and inaccurate results. Therefore, how to implement REM in indoor testing and accurately assess its energy-saving effects is a crucial issue that urgently needs to be addressed in the research, development, and evaluation of this technology. Summary of the Invention

[0003] Based on the shortcomings pointed out in the background art, the purpose of this invention is to provide a device and method for achieving predictive energy management of a vehicle during indoor testing. This method addresses the issue of vehicles entering a drum mode during indoor testing according to their specific operating procedures. It employs a device for predictive energy management that runs a dedicated program. This device and program periodically send map information and traffic information coupled with a predetermined speed curve. While maintaining the vehicle's geographical location, it simulates the vehicle's operation on a road, receiving road information ahead to guide the vehicle's operation on a predetermined speed curve during indoor testing, thereby achieving energy-saving effects.

[0004] To achieve the above objectives, the technical solution utilized in this invention is as follows:

[0005] on the one hand

[0006] This invention provides a method for implementing predictive energy management of a vehicle during indoor testing. The method is performed using a device for implementing predictive energy management of a vehicle during indoor testing. The device includes a specialized program that runs a simulated road driving program that transmits map information, traffic information, and a specified communication protocol to the vehicle. When the vehicle enters the drum mode, the device uses the communication protocol to transmit the map information and traffic information to the vehicle, and the vehicle automatically selects to receive the map and traffic information.

[0007] The method includes the following:

[0008] Step 1: Based on the vehicle speed-condition curve characteristics specified in the vehicle energy consumption test, convert the vehicle speed-condition curve characteristics into traffic information for simulated road testing;

[0009] Step 2: Based on the map information collected from the road test, extract appropriate map information and couple it with the vehicle speed and operating condition curves;

[0010] Step 3: Run the vehicle on the drum test bench using the speed-performance curve with traffic and map information, and revise the traffic and map information to ensure that the vehicle runs normally on the drum test bench according to the prescribed speed-performance curve.

[0011] Step 4: Write traffic information and map information into a special program running on the device. When the vehicle is in drum mode, the vehicle automatically selects to receive data sent by this special program.

[0012] Step 5: When the vehicle is running in drum mode, the device runs a special program to send a map and traffic information of a fixed distance or time length of the road to be traveled at a fixed period. The vehicle automatically selects to receive the map and traffic information.

[0013] Step 6: The vehicle completes the specified speed and operating conditions and the energy consumption results are calculated. The results are compared with the original energy consumption results to obtain the energy-saving effect of predictive energy management and ensure the normal operation of predictive energy management.

[0014] Furthermore, the map information includes slope, curvature, and speed limit, and the traffic information includes multiple segment distances and the estimated travel time for each segment distance, congestion index, traffic light phases, and the countdown time for each phase.

[0015] Furthermore, the vehicle drum mode is entered by performing special operations on the vehicle before the test. The special program running the device communicates with the vehicle to transmit map information and traffic information. When the vehicle drum mode is running, the vehicle automatically selects to receive the communication data.

[0016] Furthermore, the vehicle operates according to a speed-condition curve that matches the data provided by the device's specialized program. This speed-condition curve provides corresponding resistance to the vehicle wheels second by second through a rotary drum test bench according to pre-set values. The driver's assistant on the rotary drum bench displays the speed indication value of the speed-condition curve and the current actual vehicle speed. The driver uses the accelerator / brake to make the tire tread speed equal to the preset operating speed. The resistance includes wind resistance, rolling resistance, and gradient resistance simulating road driving. The gradient resistance is coupled with the gradient in the map information.

[0017] Furthermore, the effect of the vehicle predictive energy management is achieved by turning the device's dedicated program on and off: when the dedicated program is on, the vehicle predictive energy management is ready to take effect, and the vehicle automatically selects to receive data sent by the dedicated program when it enters the drum mode. This effect reduces the vehicle's energy consumption when the vehicle is traveling on the specified operating speed curve. When the dedicated program is off, the vehicle predictive energy management is not ready to take effect, the vehicle cannot receive simulated traffic information and map information ahead, and the vehicle maintains its original energy consumption level when traveling on the specified operating speed curve.

[0018] on the other hand

[0019] This invention provides a device for predictive energy management of a vehicle during indoor testing. The device includes a specialized program that runs a simulated road driving program, which transmits map information, traffic information, and a specified communication protocol to the vehicle. When the vehicle enters the drum mode, the device uses the communication protocol to transmit the map information and traffic information to the vehicle, and the vehicle automatically selects to receive the map and traffic information.

[0020] Compared with the prior art, the beneficial effects of the present invention are as follows:

[0021] For vehicles undergoing indoor testing, a special operating procedure is followed to enter the vehicle's drum mode. A dedicated program is used to implement vehicle predictive energy management. This program sends map information and traffic information coupled with a specified speed curve at fixed intervals. With the vehicle's geographical location remaining unchanged, it simulates the vehicle receiving road information while running on the road. In indoor testing, this replaces the road information receiving device required for vehicle predictive energy management. The vehicle runs on a specified speed operating curve to test and evaluate energy-saving effects. The use of indoor testing for predictive energy management in automobiles facilitates the development, testing, and evaluation of this technology. Compared to road testing, it significantly shortens the testing cycle for the energy-saving effects of predictive energy management: road testing typically requires about one month of repeated testing to obtain reliable results, while drum testing generally only requires two days to obtain accurate and reliable results; it also significantly reduces the testing cost for energy-saving effects: road testing consumes a lot of fuel, manpower, and prototype vehicle space, while drum testing significantly reduces testing costs due to its extremely short testing time; and it significantly improves the accuracy of energy-saving effect testing: energy consumption test results based on laboratory drum testing typically have an error of less than 0.5%, while energy consumption test results from road testing usually use the average of long-term, multiple test results, and the error in the test results may cover the energy-saving effect of the technology. Attached Figure Description

[0022] The accompanying drawings, which form part of this invention, are used to provide a further understanding of the invention. The illustrative embodiments of the invention and their descriptions are used to explain the invention and do not constitute an improper limitation of the invention.

[0023] In the attached diagram:

[0024] Figure 1 This is a flowchart illustrating a method for implementing predictive energy management of a vehicle during indoor testing, according to an embodiment of the present invention.

[0025] Figure 2 This is a test principle diagram of a method for implementing predictive energy management of automobiles during indoor testing, according to an embodiment of the present invention.

[0026] Figure 3 This is a schematic diagram of a device for implementing predictive energy management of automobiles during indoor testing, according to an embodiment of the present invention. Detailed Implementation

[0027] It should be noted that, unless otherwise specified, the embodiments and features described in the present invention can be combined with each other.

[0028] The present invention will now be described in detail with reference to the accompanying drawings and embodiments.

[0029] like Figures 1-3 As shown, this embodiment provides a method for implementing predictive energy management of a vehicle during indoor testing, the method being performed using a device for implementing predictive energy management of a vehicle during indoor testing.

[0030] The device for predictive energy management of a vehicle during indoor testing includes traffic information, map information, and a communication protocol. The traffic information originates from the characteristics of a specified operating condition curve. This characteristic is converted into traffic information and then written into the device. Preferably, the vehicle speed operating condition curve uses the Chinese operating condition speed curve for vehicle energy consumption testing, including urban speed curves, suburban speed curves, and highway speed curves, and also includes idling time. The traffic information includes multiple segment distances of the road ahead, the estimated travel time for each segment distance, the congestion index of the road ahead, the traffic light phases of the road ahead, and the countdown time of each phase. The map information preferably comes from data collected through road experiments or data collected by map navigation software. This data needs to be coupled with a fixed operating condition curve, and after the data design is completed, it is written into the device. The map information preferably includes the slope, curvature, and speed limit of the road ahead. The communication protocol is a dedicated protocol for data communication between the device and the vehicle. Preferably, the communication protocol is the HTTP protocol. Using this protocol, the test vehicle automatically selects to receive the map information and traffic information sent by the device after entering its drum mode.

[0031] The method includes the following steps:

[0032] Step 1: Based on the vehicle speed-condition curve characteristics specified in the vehicle energy consumption test, the vehicle speed-condition curve characteristics are converted into traffic information for simulated road tests; the idling time of the preferred Chinese operating condition curve is converted into the traffic light phase and phase countdown time of the road ahead; the preferred Chinese operating condition urban speed curve, suburban speed curve and highway speed curve are converted into multiple distances to be traveled ahead and their corresponding estimated travel time.

[0033] Step 2: Based on the map information collected from the road test, extract appropriate map information and couple it with the vehicle speed and operating condition curve; preferably, the map information includes the slope, curvature, and speed limit of the road ahead; preferably, the slope, curvature, and speed limit of the road ahead are obtained from the road test data; the map information is coupled with the Chinese operating condition vehicle speed curve, and the simulation software is used for preliminary verification, and the drum test is used for actual verification to ensure that the coupled map information does not affect the characteristics of the Chinese operating condition vehicle speed curve.

[0034] Step 3: Run the vehicle on the drum test bench using the speed-performance curve with traffic and map information, and revise the traffic and map information to ensure that the vehicle operates normally on the drum test bench according to the specified speed-performance curve. Preferably, the vehicle trial run adopts a hot-engine state test, which allows for continuous testing, shortens the test cycle, and reduces test costs. Preferably, the judgment requirement for normal operation of the speed-performance curve with traffic and map information is that the operation of the test vehicle meets the requirements of energy consumption test for speed curve following.

[0035] Step 4: Write traffic information and map information into a special program running on the device. When the vehicle is in drum mode, the vehicle automatically selects to receive data from the special program. Preferably, after the vehicle enters drum mode through specific operations specified by the manufacturer, the vehicle automatically selects to receive data sent from the special program running on the device when in drum mode. Preferably, the vehicle does not need to specifically set the starting and destination positions for navigation.

[0036] Step 5: When the vehicle is running in drum mode, a special program running on the device sends maps and traffic information of a fixed distance or time duration for the road to be traveled at a fixed interval. The vehicle receives the maps and traffic information while running in drum mode. Preferably, the fixed interval is consistent with the interval at which the vehicle receives map navigation while traveling on the road. Preferably, the device on which the vehicle receives the map and traffic information is consistent with the device on which the vehicle receives map navigation while traveling on the road. Preferably, the device on which the vehicle receives map and traffic information while traveling on the road is generally a cockpit navigation map device or system.

[0037] Step 6: The vehicle operates at the specified speed and the energy consumption is calculated. The result is compared with the original energy consumption to obtain the energy-saving effect of the predicted energy management, ensuring its normal operation. Preferably, the vehicle's energy consumption is calculated using the method specified in national standards, expressed as energy consumption per 100 kilometers (L / 100km). The energy-saving effect is the difference between the energy consumption per 100 kilometers under normal predicted energy management operation and the energy consumption per 100 kilometers when predicted energy management is not operating.

[0038] In addition, this embodiment also provides a device for realizing predictive energy management of a car during indoor testing. The device includes a special program that runs a simulated road driving program that transmits map information, traffic information and a specified communication protocol to the vehicle. When the vehicle enters the drum mode, the device uses the communication protocol to transmit the map information and traffic information to the vehicle, and the vehicle automatically selects to receive the map and traffic information.

[0039] The traffic information is derived from the characteristics of a specified operating condition curve. After the characteristics of the specified operating condition curve are converted into traffic information, the information is written into the device. The vehicle speed operating condition curve adopts the operating condition vehicle speed curve in the vehicle energy consumption test, including urban vehicle speed curve, suburban vehicle speed curve and highway vehicle speed curve, and also includes idling time.

[0040] The traffic information includes multiple segments of the road ahead, the estimated travel time for each segment, the congestion index of the road ahead, the traffic light phases and the countdown time for each phase.

[0041] The map information comes from data collected through road experiments or data collected by map navigation software. This data needs to be coupled with a fixed operating condition curve. After the data is designed, it is written into the device. The map information preferably includes the slope of the road ahead, the curvature of the road ahead, and the speed limit of the road ahead.

[0042] The communication protocol is a specialized protocol for data communication between the device and the vehicle; preferably, the communication protocol is the HTTP protocol, which allows the test vehicle to automatically select and receive map information and traffic information sent by the device after entering its drum mode.

[0043] The above are merely preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A method for implementing predictive energy management of a vehicle during indoor testing, characterized by: The method is performed using a device for predictive energy management of a vehicle during indoor testing. The device includes a specialized program that runs a simulated road driving program that transmits map information, traffic information, and a specified communication protocol to the vehicle. When the vehicle enters the drum mode, the device uses the communication protocol to transmit the map information and traffic information to the vehicle, and the vehicle automatically selects to receive the map and traffic information. The method includes the following steps: Step 1: Based on the vehicle speed-condition curve specified in the vehicle energy consumption test, convert the characteristics of the vehicle speed-condition curve into traffic information for simulated road testing; Step 2: Based on the data collected from road tests or obtained from map navigation, extract appropriate map information and couple it with the vehicle speed and operating condition curve; Step 3: Run the vehicle on the drum test bench using the vehicle speed and condition curve with traffic and map information, verify and revise the coupled traffic and map information to ensure that the vehicle can operate normally on the drum test bench according to the specified vehicle speed and condition curve. Step 4: Write traffic information and map information into a special program that runs the device. When the vehicle enters the drum mode, the vehicle automatically receives data sent by the special program that runs the device. Step 5: When the vehicle is running in drum mode, the device runs a special program to send a map and traffic information of a fixed distance or time length of the road to be traveled at a fixed period. The vehicle automatically receives the map and traffic information. Step 6: The vehicle completes the specified speed operation and the energy consumption results are calculated. The results are compared with the original energy consumption results to obtain the energy-saving effect of predictive energy management and ensure the normal operation of predictive energy management. The vehicle operates according to a speed-condition curve that matches the data provided by the specialized program. The speed-condition curve provides corresponding resistance to the vehicle wheels second by second through a rotary drum test bench according to a pre-set value. The driver's assistant on the rotary drum bench displays the speed indication value of the speed-condition curve and the current actual vehicle speed. The driver uses the accelerator / brake to make the tire tread speed of the vehicle equal to the preset operating speed. The resistance includes wind resistance, rolling resistance, and gradient resistance that simulate the vehicle's road driving. The gradient resistance is coupled with the gradient in the map information. The effect of the vehicle predictive energy management is achieved by turning the device's dedicated program on and off: when the dedicated program is on, the vehicle automatically receives data from the program while running in drum mode, and the vehicle predictive energy management is ready to take effect. This effect reduces the vehicle's energy consumption when the vehicle is running the specified speed-condition curve. When the dedicated program is off, the vehicle predictive energy management is not ready to take effect, and the vehicle cannot automatically receive simulated traffic and map information ahead while running in drum mode. The vehicle's energy consumption remains at the original level when the vehicle is running the specified speed-condition curve.

2. The method for predictive energy management of a vehicle during indoor testing according to claim 1, characterized in that: The map information includes slope, curvature, and speed limit, while the traffic information includes multiple segment distances and the estimated travel time for each segment distance, congestion index, traffic light phases, and phase countdown time.

3. The method for predictive energy management of a vehicle during indoor testing according to claim 1, characterized in that: The vehicle drum mode is entered by performing special operations on the vehicle before the test. The special program running the device communicates with the vehicle to transmit map information and traffic information. When the vehicle drum mode is running, the vehicle automatically receives map and traffic information.

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