Intelligent power management system and management method for commercial vehicle

Abstract

This invention relates to an intelligent power management system and method for commercial vehicles, comprising a primary power distribution architecture and a secondary power distribution architecture. The primary power distribution architecture includes a dual redundant power supply composed of a DC-DC converter and a battery, which serves as input to power the power distribution modules in the left and right areas of the driver's cab, the front and rear of the chassis, respectively. The secondary power distribution architecture provides power to the loads controlled by the power distribution modules in the left and right areas of the driver's cab, the front and rear of the chassis. The intelligent power management method has functions such as circuit abnormality fault warning, active diagnosis, and remote / cloud online diagnosis. Based on a cloud diagnostic database and combined with artificial intelligence algorithms, it analyzes abnormal vehicle data, enabling fault warnings for loads in each circuit, quickly locating fault points, and generating maintenance suggestions for repair personnel, thus shortening maintenance time.

Description

Technical Field

[0001] This invention relates to the field of commercial vehicle technology, and in particular to an intelligent power management system and management method for commercial vehicles. Background Technology

[0002] Existing commercial vehicle low-voltage systems use fuses and relays for power management. Fuses provide short-circuit and overload protection for low-voltage wiring harnesses and loads through a melting mechanism, while relays use an electromagnet and spring mechanism to control the on / off state of low-voltage load circuits via low-voltage control signals. When a power system malfunctions and needs troubleshooting, the system's operating status cannot be obtained, making repairs highly dependent on the experience of the troubleshooting personnel. This lack of proactive fault diagnosis capabilities and the inability to quickly and accurately protect circuits and loads further complicates repairs as the number of electrical devices, power consumption, and power circuits in vehicles continues to increase. Furthermore, the increasing number of electrical devices and power circuits makes the wiring of fuse-and-relay power systems chaotic and complex, easily leading to malfunctions. Summary of the Invention

[0003] The purpose of this invention is to address the shortcomings of existing technologies by providing a smart power management system and method for commercial vehicles.

[0004] This invention is achieved using the following technical solution:

[0005] A commercial vehicle intelligent power management system includes a primary power distribution architecture and a secondary power distribution architecture. The primary power distribution architecture includes a dual redundant power supply composed of a DC-DC converter and a battery. The dual redundant power supply serves as an input to power the power distribution modules in the left area of ​​the driver's cab, the right area of ​​the driver's cab, the front of the chassis, and the rear of the chassis. The secondary power distribution architecture provides power to the loads controlled by the power distribution modules in the left area of ​​the driver's cab, the right area of ​​the driver's cab, the front of the chassis, and the rear of the chassis.

[0006] Furthermore, under high-voltage power-on condition, the DC-DC converter supplies power to the left area power distribution module of the cab, the right area power distribution module of the cab, the front power distribution module of the chassis, and the rear power distribution module of the chassis; under high-voltage power-off condition, the battery supplies power to the left area power distribution module of the cab, the right area power distribution module of the cab, the front power distribution module of the chassis, and the rear power distribution module of the chassis.

[0007] When the DC-DC power input is abnormal, switch to the battery as the power input; when the battery power input is abnormal, switch to the DC-DC as the power input.

[0008] Furthermore, the left cab area power distribution module, right cab area power distribution module, front chassis power distribution module, and rear chassis power distribution module are respectively connected to the loads controlled by each area power distribution module, forming a left area power distribution circuit, a right area power distribution circuit, a front power distribution circuit, and a rear power distribution circuit. Each of the left cab area power distribution module, right cab area power distribution module, front chassis power distribution module, and rear chassis power distribution module is equipped with a domain controller. The loads of the left area power distribution circuit, the right area power distribution circuit, the front power distribution circuit, and the rear power distribution circuit are all connected to a drive chip. The drive chip communicates with the domain controllers in each area power distribution module via a bus. The domain controllers control the power supply to the loads in each circuit through the drive chip. The drive chip monitors the operating parameters of the loads in each circuit and transmits them to the domain controllers in each area power distribution module. The domain controllers transmit the operating parameters of the loads in each circuit to the T-BOX module via a bus. The T-BOX module communicates with a cloud database.

[0009] Furthermore, based on the impedance characteristics and current magnitude of the loads in the left area power distribution circuit, right area power distribution circuit, front power distribution circuit, and rear power distribution circuit, a suitable driver chip is selected.

[0010] When each power distribution circuit is below 10A, the HSD high-side driver chip is selected.

[0011] When each power distribution circuit is 10-20A, select a MOSFET driver chip;

[0012] When each power distribution circuit is above 20A, select MOS with pre-drive chip.

[0013] Furthermore, it also includes a visual graphical management interface, which displays the working status and power consumption of the loads in each circuit through the central control screen in the driver's cab or a mobile APP, and sends the working status data and power consumption data to the vehicle system or cloud database for storage. The cloud database includes a cloud load database and a cloud diagnostic database.

[0014] Furthermore, the left cab area power distribution module, the right cab area power distribution module, the front chassis power distribution module, or the rear chassis power distribution module are provided with at least one external load interface. The external load interface is used for customers to connect external loads and set parameters for the external loads through a graphical management interface.

[0015] A method for intelligent power management of commercial vehicles, applied to any of the above-described intelligent management systems for commercial vehicles, includes power analysis and optimization, wherein the power analysis and optimization comprises:

[0016] The domain controllers of each power distribution module acquire load information in each power distribution circuit. The load information includes load status, load characteristics, and temperature of each power distribution circuit. The load status includes current and voltage status, and the load characteristics are resistive, capacitive, or inductive.

[0017] Vehicle operating status information is obtained through on-board sensors, including environmental conditions, weather conditions, vehicle operating time and operating season; among which environmental conditions are temperature and humidity, weather conditions are sunny or rainy, and vehicle operating time is day or night.

[0018] Upload load information and vehicle operating information to the cloud load database;

[0019] Based on the load database and the current operating status of the vehicle, the protection parameters of each power distribution circuit load are analyzed:

[0020] On a daily basis, based on the load information of each power distribution circuit during different operating periods of the vehicle, the differences in the load power demand of each power distribution circuit during daytime or nighttime, and sunny or rainy days are analyzed.

[0021] Based on the load information of each power distribution circuit of the vehicle in each season, the impact of seasonal environmental conditions on the load operation of each power distribution circuit is analyzed.

[0022] Using the load information of each power distribution circuit in different years for vehicles and similar models, the aging of the load in each power distribution circuit is analyzed on an annual basis.

[0023] Then, the protection parameters are optimized through the cloud-based power analysis and optimization module and updated in the vehicle system or cloud-based load database.

[0024] Furthermore, it also includes cloud-based power failure diagnosis:

[0025] The domain controllers of each power distribution module obtain the load information of each power distribution circuit under the current vehicle status and feed it back to the cloud power fault diagnosis module.

[0026] The cloud-based power supply fault diagnosis module acquires historical load information of each power distribution circuit in the vehicle from the cloud-based diagnostic database, as well as historical diagnostic information of the load of each power distribution circuit in the vehicle and similar models from different years. It analyzes the load information of each power distribution circuit under the current state through artificial intelligence algorithms, realizes fault warning of each power distribution circuit under the current state, obtains diagnostic results and generates maintenance suggestions. The fault warning, diagnostic results and maintenance suggestions are displayed on the central control screen in the cab or on the mobile APP through a visual graphical management interface. Maintenance personnel perform maintenance based on the results displayed on the central control screen in the cab or on the mobile APP.

[0027] Furthermore, the repair personnel verify the diagnostic results and repair recommendations. If the diagnostic results and repair recommendations are accurate, the repairs are carried out according to the diagnostic results and repair recommendations, and the repair records are uploaded to the cloud diagnostic database for storage.

[0028] If there is a discrepancy between the diagnostic results and repair recommendations, the discrepancy information will be fed back to the cloud-based power fault diagnosis module to regenerate the diagnostic results and repair recommendations.

[0029] Compared with the prior art, the present invention has the following beneficial technical effects:

[0030] 1. By replacing the structure of fuses and relays in the traditional power management system with load and drive chips for each circuit, the load status of each circuit can be obtained in real time. Based on each vehicle, a detailed load database and power analysis optimization algorithm are established to dynamically configure suitable protection parameters for the drive chips of each circuit. The power distribution of each circuit load is accurate and the protection is rapid, which improves the reliability of the power system and can meet the functional safety requirements of the power circuit functional safety level in the functional safety requirements of L3+ autonomous driving technology.

[0031] 2. The intelligent power management system uses a domain-integrated power system architecture, which can shorten the length of the vehicle wiring harness. By using the load and drive chip of each circuit to precisely control the circuit load, the diameter of the vehicle wiring harness can be reduced, thereby reducing the overall vehicle wiring cost.

[0032] 3. The intelligent power management method has functions such as circuit abnormality fault early warning, active diagnosis and remote / cloud online diagnosis. Based on the cloud diagnostic database and combined with artificial intelligence algorithms to analyze the abnormal data of the vehicle, it can realize fault early warning of each circuit load, quickly locate the fault point and generate maintenance suggestions for maintenance personnel, thus shortening the maintenance time. Attached Figure Description

[0033] Figure 1 This is a connection diagram of the primary power distribution architecture of the intelligent power management system of the present invention;

[0034] Figure 2 This is a connection diagram of the two-level power distribution architecture of the intelligent power management system of the present invention;

[0035] Figure 3 This is a schematic diagram of the power analysis and optimization process of the intelligent power management method of the present invention;

[0036] Figure 4 This is a schematic diagram of the power fault diagnosis process of the intelligent power management method of the present invention. Detailed Implementation

[0037] To enable those skilled in the art to better understand the technical solutions of this invention, the technical solutions of the embodiments of this invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this invention, and not all embodiments. Based on the embodiments of this invention, all other embodiments obtained by those skilled in the art without creative effort should fall within the scope of protection of this invention.

[0038] Example 1

[0039] A commercial vehicle intelligent power management system includes a primary power distribution architecture and a secondary power distribution architecture. The primary power distribution architecture includes a dual redundant power supply composed of a DC-DC converter and a battery. The dual redundant power supply serves as the input to power the power distribution modules in the left area of ​​the driver's cab, the right area of ​​the driver's cab, the front power distribution module of the chassis, and the rear power distribution module of the chassis. The secondary power distribution architecture provides power to the loads controlled by the power distribution modules in the left area of ​​the driver's cab, the right area of ​​the driver's cab, the front power distribution module of the chassis, and the rear power distribution module of the chassis.

[0040] When the high voltage is on, the DC-DC converter supplies power to the left area power distribution module of the cab, the right area power distribution module of the cab, the front power distribution module of the chassis, and the rear power distribution module of the chassis; when the high voltage is off, the battery supplies power to the left area power distribution module of the cab, the right area power distribution module of the cab, the front power distribution module of the chassis, and the rear power distribution module of the chassis.

[0041] When the DC-DC power input is abnormal, switch to the battery as the power input; when the battery power input is abnormal, switch to the DC-DC as the power input.

[0042] The left-side power distribution module, right-side power distribution module, front chassis power distribution module, and rear chassis power distribution module are connected to the loads controlled by each power distribution module, forming left-side power distribution circuits, right-side power distribution circuits, front power distribution circuits, and rear power distribution circuits. Each of these modules is equipped with a domain controller. The loads in the left-side, right-side, front, and rear power distribution circuits are connected to a drive chip. The drive chip communicates with the domain controllers in each power distribution module via a bus. The domain controllers control the power supply to the loads in each circuit through the drive chip. The drive chip monitors the operating parameters of the loads in each circuit and transmits them to the domain controllers in each power distribution module. The domain controllers transmit the operating parameters of the loads in each circuit to the T-BOX module via a bus. The T-BOX module communicates with the cloud database.

[0043] Select the appropriate driver chip based on the impedance characteristics and current magnitude of the loads in the left area power distribution circuit, right area power distribution circuit, front power distribution circuit, and rear power distribution circuit.

[0044] When each power distribution circuit is below 10A, the HSD high-side driver chip is selected.

[0045] When each power distribution circuit is 10-20A, select a MOSFET driver chip;

[0046] When each power distribution circuit is above 20A, select MOS with pre-drive chip.

[0047] It also includes a visual graphical management interface, which displays the working status and power consumption of the loads in each circuit through the central control screen in the driver's cab or a mobile APP, and sends the working status data and power consumption data to the vehicle system or cloud database for storage. The cloud database includes a cloud load database and a cloud diagnostic database.

[0048] The left-side cab power distribution module, right-side cab power distribution module, front chassis power distribution module, or rear chassis power distribution module are each reserved with at least one external load interface. The external load interface is used by the customer to connect an external load and set the parameters of the external load through a graphical management interface.

[0049] Example 2

[0050] A method for intelligent power management of commercial vehicles, applied to any of the above-described intelligent management systems for commercial vehicles, includes power analysis and optimization, wherein the power analysis and optimization is as follows:

[0051] The domain controllers of each power distribution module acquire load information in each power distribution circuit. The load information includes load status, load characteristics, and temperature of each power distribution circuit. The load status includes current and voltage status, and the load characteristics are resistive, capacitive, or inductive.

[0052] Vehicle operating status information is obtained through on-board sensors, including environmental conditions, weather conditions, vehicle operating time and operating season; among which environmental conditions are temperature and humidity, weather conditions are sunny or rainy, and vehicle operating time is day or night.

[0053] Upload load information and vehicle operating information to the cloud load database;

[0054] Based on the load database and the current operating status of the vehicle, the protection parameters of each power distribution circuit load are analyzed:

[0055] On a daily basis, based on the load information of each power distribution circuit during different operating periods of the vehicle, the differences in the load power demand of each power distribution circuit during daytime or nighttime, and sunny or rainy days are analyzed.

[0056] Based on the load information of each power distribution circuit of the vehicle in each season, the impact of seasonal environmental conditions on the load operation of each power distribution circuit is analyzed.

[0057] Using the load information of each power distribution circuit in different years for vehicles and similar models, the aging of the load in each power distribution circuit is analyzed on an annual basis.

[0058] Then, the protection parameters are optimized through the cloud-based power analysis and optimization module and updated in the vehicle system or cloud-based load database.

[0059] It also includes cloud-based power failure diagnosis:

[0060] The domain controllers of each power distribution module obtain the load information of each power distribution circuit under the current vehicle status and feed it back to the cloud power fault diagnosis module.

[0061] The cloud-based power supply fault diagnosis module acquires historical load information of each power distribution circuit in the vehicle from the cloud-based diagnostic database, as well as historical diagnostic information of the load of each power distribution circuit in the vehicle and similar models from different years. It analyzes the load information of each power distribution circuit under the current state through artificial intelligence algorithms, realizes fault warning of each power distribution circuit under the current state, obtains diagnostic results and generates maintenance suggestions. The fault warning, diagnostic results and maintenance suggestions are displayed on the central control screen in the cab or on the mobile APP through a visual graphical management interface. Maintenance personnel perform maintenance based on the results displayed on the central control screen in the cab or on the mobile APP.

[0062] The repair personnel verify the diagnostic results and repair recommendations. If the diagnostic results and repair recommendations are accurate, they perform the repairs according to the diagnostic results and repair recommendations and upload the repair records to the cloud diagnostic database for storage.

[0063] If there is a discrepancy between the diagnostic results and repair recommendations, the discrepancy information will be fed back to the cloud-based power fault diagnosis module to regenerate the diagnostic results and repair recommendations.

Claims

1. A smart power management system for commercial vehicles, characterized in that, It includes a primary power distribution architecture and a secondary power distribution architecture. The primary power distribution architecture includes a dual redundant power supply composed of a DC-DC converter and a battery. The dual redundant power supply serves as the input to supply power to the power distribution modules in the left area of ​​the cab, the right area of ​​the cab, the front of the chassis, and the rear of the chassis. The secondary power distribution architecture provides power to the loads controlled by the power distribution modules in the left area of ​​the cab, the right area of ​​the cab, the front of the chassis, and the rear of the chassis.

2. The intelligent power management system for commercial vehicles according to claim 1, characterized in that, When the high voltage is on, the DC-DC converter supplies power to the left area power distribution module of the cab, the right area power distribution module of the cab, the front power distribution module of the chassis, and the rear power distribution module of the chassis; when the high voltage is off, the battery supplies power to the left area power distribution module of the cab, the right area power distribution module of the cab, the front power distribution module of the chassis, and the rear power distribution module of the chassis. When the DC-DC power input is abnormal, switch to the battery as the power input; when the battery power input is abnormal, switch to the DC-DC as the power input.

3. The intelligent power management system for commercial vehicles according to claim 2, characterized in that, The left-side power distribution module, right-side power distribution module, front chassis power distribution module, and rear chassis power distribution module are each connected to the loads controlled by their respective power distribution modules, forming a left-side power distribution circuit, a right-side power distribution circuit, a front power distribution circuit, and a rear power distribution circuit. Each of these modules is equipped with a domain controller. The loads of the left-side, right-side, front, and rear power distribution circuits are all connected to a drive chip. The drive chip communicates with the domain controllers in each power distribution module via a bus. The domain controllers control the power supply to the loads in each circuit through the drive chip. The drive chip monitors the operating parameters of the loads in each circuit and transmits them to the domain controllers in each power distribution module. The domain controllers transmit the operating parameters of the loads in each circuit to the T-BOX module via a bus. The T-BOX module communicates with a cloud database.

4. The intelligent power management system for commercial vehicles according to claim 3, characterized in that, Based on the impedance characteristics and current magnitude of the loads in the left area power distribution circuit, right area power distribution circuit, front power distribution circuit, and rear power distribution circuit, select a suitable driver chip. When each power distribution circuit is below 10A, the HSD high-side driver chip is selected. When each power distribution circuit is 10-20A, select a MOSFET driver chip; When each power distribution circuit is above 20A, select MOS with pre-drive chip.

5. The intelligent power management system for commercial vehicles according to claim 4, characterized in that, It also includes a visual graphical management interface, which displays the working status and power consumption of the loads in each circuit through the central control screen in the driver's cab or a mobile APP, and sends the working status data and power consumption data to the vehicle system or cloud database for storage. The cloud database includes a cloud load database and a cloud diagnostic database.

6. The intelligent power management system for commercial vehicles according to claim 5, characterized in that, The left cab area power distribution module, right cab area power distribution module, front chassis power distribution module, or rear chassis power distribution module are each reserved with at least one external load interface. The external load interface is used by the customer to connect an external load and set the parameters of the external load through a graphical management interface.

7. A method for intelligent power management of commercial vehicles, applied to the intelligent management system for commercial vehicles as described in any one of claims 1-6, characterized in that, This includes power analysis and optimization, which includes: The domain controllers of each power distribution module acquire load information in each power distribution circuit. The load information includes load status, load characteristics, and temperature of each power distribution circuit. The load status includes current and voltage status, and the load characteristics are resistive, capacitive, or inductive. Vehicle operating status information is obtained through on-board sensors, including environmental conditions, weather conditions, vehicle operating time and operating season; among which environmental conditions are temperature and humidity, weather conditions are sunny or rainy, and vehicle operating time is day or night. Upload load information and vehicle operating information to the cloud load database; Based on the load database and the current operating status of the vehicle, the protection parameters of each power distribution circuit load are analyzed: On a daily basis, based on the load information of each power distribution circuit during different operating periods of the vehicle, the differences in the load power demand of each power distribution circuit during daytime or nighttime, and sunny or rainy days are analyzed. Based on the load information of each power distribution circuit of the vehicle in each season, the impact of seasonal environmental conditions on the load operation of each power distribution circuit is analyzed. Using the load information of each power distribution circuit in different years for vehicles and similar models, the aging of the load in each power distribution circuit is analyzed on an annual basis. Then, the protection parameters are optimized through the cloud-based power analysis and optimization module and updated in the vehicle system or cloud-based load database.

8. The intelligent power management method for commercial vehicles according to claim 7, characterized in that, It also includes cloud-based power failure diagnosis: The domain controllers of each power distribution module obtain the load information of each power distribution circuit under the current vehicle status and feed it back to the cloud power fault diagnosis module. The cloud-based power supply fault diagnosis module acquires historical load information of each power distribution circuit in the vehicle from the cloud-based diagnostic database, as well as historical diagnostic information of the load of each power distribution circuit in the vehicle and similar models from different years. It analyzes the load information of each power distribution circuit under the current state through artificial intelligence algorithms, realizes fault warning of each power distribution circuit under the current state, obtains diagnostic results and generates maintenance suggestions. The fault warning, diagnostic results and maintenance suggestions are displayed on the central control screen in the cab or on the mobile APP through a visual graphical management interface. Maintenance personnel perform maintenance based on the results displayed on the central control screen in the cab or on the mobile APP.

9. The intelligent power management method for commercial vehicles according to claim 8, characterized in that, The repair personnel verify the diagnostic results and repair recommendations. If the diagnostic results and repair recommendations are accurate, they perform the repairs according to the diagnostic results and repair recommendations and upload the repair records to the cloud diagnostic database for storage. If there is a discrepancy between the diagnostic results and repair recommendations, the discrepancy information will be fed back to the cloud-based power fault diagnosis module to regenerate the diagnostic results and repair recommendations.

Images