New energy passenger car chassis electrical control system, passenger car chassis and passenger car

Abstract

The utility model relates to a new energy passenger car chassis electrical control system, a passenger car chassis and a passenger car. The low-voltage distribution box is electrically connected with the vehicle control unit and is controlled by the vehicle control unit; the vehicle body slave control module is electrically connected with the power supply output port of the low-voltage distribution box and performs power supply distribution on corresponding low-voltage parts of the vehicle body; the vehicle body master control module is connected with the whole vehicle controller through a CAN bus; each vehicle body slave control module is connected with the vehicle body master control module through a CAN bus, and a power input port of each vehicle body slave control module is electrically connected with the low-voltage distribution box; each vehicle body slave control module comprises a plurality of input and output ports, and each port is connected with a corresponding low-voltage electrical device. Compared with the prior art, the scheme is high in universality, better in integration level and better in maintainability.

Description

Technical Field

[0001] The present application belongs to the field of new energy buses, and in particular to the structure of an electrical control system for a chassis of a new energy bus. Background Art

[0002] At present, the integration and modularization of electrical components of new energy vehicles is a significant trend in the development of new energy vehicles. Since new energy buses serve specific customer groups, customized demands dominate, and compared with new energy passenger cars, they cannot be met through mass production. The current new energy bus chassis electrical control system has problems such as insufficient versatility and poor scalability, making it difficult to cope with the ever-diversifying product demands. On the other hand, the wiring harness connections in the current new energy bus chassis electrical design are too complicated, and the wiring harnesses are too long and too many, resulting in reduced reliability and unnecessary cost increases.

[0003] Therefore, it is necessary to propose new technical solutions to improve the versatility and modularity of the electrical control system of the new energy bus chassis and optimize the wiring harness connection, solve the problems faced by the current system such as personalized needs, reduced reliability and technology upgrades, and promote further improvement of the system in terms of performance and cost-effectiveness. Utility Model Content

[0004] This solution aims to provide a new solution to the problems of insufficient versatility and scalability of the chassis electrical control system of new energy buses. The body slave control module has a built-in CAN communication module, which supports the free combination of up to 9 modules to meet the electrical requirements of various new energy bus chassis. In addition, the body slave control module exchanges information with the body master control module and the vehicle control unit (VCU) through the CAN network, enhancing versatility and improving module combination.

[0005] The new energy bus chassis electrical control system of the present application includes a vehicle controller, which is connected to a low-voltage distribution box and is controlled by the vehicle controller. In addition, the body slave control module is connected to the power output port of the low-voltage distribution box. The system also includes a body master control module, which is connected to the vehicle controller via a CAN bus. Multiple body slave control modules are also part of the system, and each body slave control module is connected to the body master control module via a CAN bus, and is connected to the low-voltage power bus through its power input port. Each body slave control module includes multiple input and output ports, which are respectively connected to low-voltage electrical equipment to achieve power control of these devices. Such a design ensures the coordinated operation and effective management of the entire electrical system.

[0006] Furthermore, the vehicle controller communicates with the body master control module via the CAN bus, and the body master control module communicates with each body slave control module via the internal CAN bus. The body master control module sends messages to the vehicle controller via the internal CAN bus, and the vehicle controller performs calculations and logical operations to further efficiently control the corresponding electrical equipment.

[0007] In addition, the body main control module converts the CAN bus control signal into an electrical control signal, but these electrical control signals are not directly used to drive the relevant electrical equipment. Instead, they act as control signals to drive the corresponding electrical equipment by controlling the drive device, making the entire system more low-coupled and more maintainable. This design not only improves the flexibility of control, but also optimizes the overall performance of the electrical system.

[0008] Furthermore, electrical devices connected to the same body slave control module should be as close as possible to reduce the length of the power controller harness and the total length of the vehicle harness. The advantage of this physical layout is that it not only minimizes the cable length from the power controller to the electrical device, but also reduces the harness length in the entire vehicle electrical system, effectively reducing resistance and signal attenuation, and improving system stability and reliability.

[0009] Furthermore, a POWER33S power controller module is selected, which has 20 signal output ports and 19 signal input ports and has a built-in protection function.

[0010] Compared with the prior art, this application solves the problem of low reliability in the current electrical scheme of the chassis of new energy buses. The power module adopted in the scheme can arrange the POWER33S module more reasonably, reduce the wiring harness connection and length of low-voltage electrical appliances, thereby improving the reliability of new energy buses and reducing production costs.

[0011] Compared with the prior art, this application has the following beneficial effects:

[0012] 1. Through the flexible combination of body control modules, this solution is more versatile and can adapt to the matching needs of different models, making the overall system more flexible and customizable.

[0013] 2. The POWER33S module is highly integrated, with 20 signal output ports and 19 signal input ports, and these ports have built-in protection functions. This greatly reduces the use of wiring harness connections and fuses, significantly improves the flexibility of vehicle layout, and improves the reliability of the chassis electrical system.

[0014] 3. As an improved new energy bus chassis electrical system, this solution not only improves system performance, but also enhances system safety. This helps reduce maintenance costs and failure rates, making the entire system more reliable and economical.

[0015] 4. The introduction of bus technology in electrical control significantly reduces the coupling degree of the chassis electrical system of new energy buses. By using the bus as the power supply and communication architecture, each power controller can transmit information through a shared bus, which improves the flexibility and maintainability of the system. The change of a power controller will not cause serious interference to other modules. It makes the system easier to upgrade and maintain. In addition, the use of the bus can also simplify the wiring and connection of the system, reduce the complexity of the wiring harness, and help improve the reliability of the system and reduce the failure rate. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 This is a schematic diagram of the modular structure of the chassis electrical control system of the new energy bus in this application. DETAILED DESCRIPTION

[0017] The present application is described in further detail below in conjunction with the accompanying drawings.

[0018] It should be noted that the term "vehicle controller" in this application also refers to the on-board VCU, which is an electronic control device responsible for managing and coordinating the operation of various systems and subsystems on the vehicle. It receives information from sensors (not shown in the figure), processes this information and issues corresponding instructions to achieve control and regulation of the vehicle. The term "body slave control module" refers to a device used to manage and distribute electrical energy. On the vehicle, the body master control module is responsible for managing the power distribution and status acquisition of the body's low-voltage electrical appliances to ensure that the low-voltage components of the body receive appropriate power supply. The term "CAN bus" is a network standard for communication between on-board devices or units (VCU). It is a serial communication protocol that is widely used in the field of vehicles. The term "power bus" refers to a unified wire that transfers power to various electronic and electrical devices on the vehicle. It is powered by a low-voltage distribution box and managed and distributed through distribution equipment. At the same time, this application only involves a low-voltage power bus. The term "internal CAN bus" is a communication system based on the CAN (Controller Area Network) protocol, which is used to connect various sensors and control units inside the vehicle so that they can communicate and coordinate with each other.

[0019] New energy bus chassis electrical control system 100 Figure 1 As shown, its framework structure is shown.

[0020] The system includes a vehicle control unit (VCU) 101. The vehicle control unit 101 is the core of the vehicle electrical system and is responsible for coordinating and managing the subsystems of the vehicle. It monitors the power system, braking system, energy management and other aspects to ensure that the vehicle operates under different conditions.

[0021] Figure 1 The various sensors and operating handles or buttons connected to the vehicle controller 101 are omitted, but this does not affect the understanding of the technical solution of the present application by those skilled in the art. The driver sends instructions to the vehicle controller 101 by operating the steering wheel, pedals, buttons and other devices. These control instructions are used to control the lighting system, disabled flap, defroster, driver's seat heater, door opening signal and electric brake signal, etc.

[0022] The electrical control system 100 includes a low-voltage distribution box 102, which is usually composed of a sealed housing, wiring terminals, connectors, fuses, control circuit boards, relays, switches and heat dissipation structures. Its main function is to provide stable low-voltage power supply for electrical equipment on the vehicle. The distribution box 102 includes output ports, wherein a first output port 1021 is connected to a first wire 121 of a low-voltage power bus, and a second output port 1022 is connected to a second wire 122 of the low-voltage power bus. A reasonably designed low-voltage distribution box 102 can adapt to the load power requirements of the entire vehicle, so that the entire vehicle can be powered by a unified low-voltage distribution box 102. As needed, the output voltage of the low-voltage distribution box 102 can be selected as 12V, 24V, 36V or 72V.

[0023] The low-voltage distribution box 102 further includes a power output port 1023, which is connected to the vehicle controller 101 to provide power to the vehicle controller 101. At the same time, the low-voltage distribution box 102 is also provided with a signal input port 1025, which is connected to the control port 1011 of the vehicle controller. The vehicle controller 101 communicates with the low-voltage distribution box 102 through the control port 1011 to control the switch, voltage adjustment and other operations of the distribution box 102. This design enables the vehicle control system to effectively manage and control the supply of low-voltage power to support the normal operation of the vehicle.

[0024] The low voltage power bus in the electrical control system 100 is composed of a first wire 121 (positive electrode) and a second wire 122 (negative electrode).

[0025] (POWER33S-1, 2, 3, 4) are connected to this power bus to power the entire system.

[0026] The electrical control system 100 includes a body master control module Master32, which is connected to the vehicle controller via a CAN bus. The operation instructions of the vehicle controller 101 are transmitted to the body master control module Master32 via the CAN bus, and then the body master control module Master32 controls the operation of the electrical equipment on the vehicle.

[0027] The specific vehicle controller 101 is responsible for collecting the driver's operating instructions, transmitting them to the body master control module Master32 through the CAN bus, and then the body master control module Master32 transmits the operating instructions to the body slave control module (POWER33S-1, 2, 3, 4) through the internal CAN bus. It is worth noting that the body master control module Master32 includes a mapping table of operating instructions and the body slave control module (POWER33S-1, 2, 3, 4), which stores the mapping logical relationship between the control instructions and the body master control module Master32, such as an operating instruction and CANID mapping table. When sending instructions through the internal CAN bus, the internal CAN message contains the CANID of the target power controller, so that the internal CAN message is received by the corresponding power controller.

[0028] The body slave control module POWER33S is responsible for realizing functions such as opening the door, turning lights, wipers, defrosters, high beams, low beams, and interior lights according to the operation instructions. Overall, through the coordinated work of multiple components, the collection of vehicle driver operation information and the control of various functions are realized. Each body slave control module (POWER33S-1, 2, 3, 4) is connected to the body master control module Master32 through the CAN bus, and the power input port 104 is electrically connected to the low-voltage power bus (121, 122).

[0029] The body slave control module (POWER33S-1, 2, 3, 4) realizes the power supply and control of multiple devices through functions such as power distribution, switch control, communication interface and current protection. It includes multiple independent switch channels, each of which is connected to an electrical device (such as a lamp or defroster lamp) through an output port. Each channel is equipped with an independent switch to connect or disconnect the corresponding electrical device to the power bus, thereby realizing flexible switching control of the electrical device. This design enables the power controller to effectively meet the power requirements of multiple devices and improve the efficiency and reliability of the entire electrical system.

[0030] Each switch channel of the body slave control module (POWER33S-1, 2, 3, 4) can not only directly drive electrical equipment and provide the required voltage and power, but also has the function of providing control signals. This control signal can be used to control the operation of higher-power equipment. For example, the disabled flap signal is used to control the start and stop of the disabled flap motor, thereby further controlling the operation of the disabled flap. The controlled equipment usually has an independent drive circuit with a greater power load capacity to ensure the reliable operation of high-power equipment. This structure enhances the flexibility of the power controller, enabling it to meet the power and control requirements of low-power and high-power equipment at the same time, providing more comprehensive support for the entire system.

[0031] The vehicle control system 100 is connected to the body master control module Master32 to receive instructions. The body master control module Master32 effectively manages the body slave control modules (POWER33S-1, 2, 3, 4) to improve the efficiency and overall performance of the electrical system. This design allows the vehicle to flexibly respond to various operating requirements, while simplifying the system architecture and making it highly scalable.

[0032] In this application, the vehicle-mounted electrical equipment is allocated to four body slave control modules according to different functions.

[0033] (POWER33S-1, 2, 3, 4) for control.

[0034] Specifically, the first body slave control module POWER33S-1 of the power controller includes multiple output ports, each of which is respectively connected to the position light, turn signal, electric horn, low beam and fog light. The second body slave control module POWER33S-2 includes multiple output ports, each of which is respectively connected to the side marker light, parking signal port, disabled flap signal port, defroster and passenger USB power supply. The third body slave control module POWER33S-3 includes multiple output ports, each of which is respectively connected to the door opening signal port, driver seat heating power supply, road sign power supply, driver light and parking light. The fourth body slave control module POWER33S-4 includes multiple output ports, each of which is respectively connected to the brake light, electric brake signal port, reversing light, supervision system power supply and rear door parking light.

[0035] During operation, the vehicle controller 101 mainly collects the driver's operation information, and transmits the CAN message to the body master control module Master32 through the CAN bus, and then transmits it to the body master control module Master32 through the CAN bus. The body master control module Master32 then sends the internal CAN message to the four body slave control modules (POWER33S-1, 2, 3, 4) through the internal CAN bus. The internal CAN message is transmitted to the body slave control modules (POWER33S-1, 2, 3, 4), and the four body slave control modules (POWER33S-1, 2, 3, 4) control specific channel switches to realize functions such as opening the door, turn signal, wiper, defroster, high beam, low beam, interior light and so on.

[0036] Furthermore, the body slave control module includes 19 signal input ports, which are used to collect the status of the low-voltage devices controlled by it, such as the switch status of the lamp and the display status light of the display. These collected status information can be sent to the body master control module in the form of messages.

[0037] When the vehicle controller 101 communicates with the vehicle body master control module Master32, the two can exchange information; when the master controller 101 communicates with the vehicle body slave control module (POWER33S-1, 2, 3, 4), information can also be exchanged. The main purpose of this information interaction is to transmit the working status or execution results of the electrical equipment to the vehicle controller 101 by means of messages. Subsequently, the vehicle controller 101 can convey the execution results or equipment status to the driver through interactive devices such as displays and indicator lights, so as to realize timely notification and feedback to the driver. This communication system helps to ensure the coordinated work between the various parts of the vehicle system, and improves the safety and convenience of operation of the vehicle.

[0038] Compared with previous technical solutions, this solution has the following advantages:

[0039] 1. Through the flexible combination of the vehicle body main control module, this solution has stronger versatility and can adapt to the matching requirements of different vehicle models. This flexibility makes the system more adaptable and can meet diverse vehicle application scenarios.

[0040] 2. The POWER33S body slave control module is more integrated, with 20 signal output ports and 19 signal input ports, and these ports have built-in protection functions. This significantly reduces the use of wiring harness connections and fuses, and improves the flexibility of vehicle layout and the reliability of chassis electrical.

[0041] 3. This solution represents an improved new energy bus chassis electrical system, which effectively reduces maintenance costs and failure rates by improving system performance and safety. This means that the vehicle is more economical and efficient in operation and maintenance, providing users with a more reliable experience.

[0042] In addition, this solution can be applied to new energy vehicle chassis or new energy vehicle complete vehicles.

Claims

1. New energy bus chassis electrical control system, characterized in that: include: Vehicle controller; A low-voltage distribution box, electrically connected to the vehicle controller and low-voltage electrical components and controlled by the vehicle controller; A body slave control module is electrically connected to the low-voltage power bus of the low-voltage power distribution box power supply and supplies power to the low-voltage components of the body and collects status; The vehicle body main control module is connected with the vehicle controller via the CAN bus for data exchange; A plurality of body slave control modules, wherein each body slave control module is connected to the body master control module via an internal CAN bus, and includes a power input port electrically connected to the low-voltage power bus; Each of the vehicle body slave control modules includes a plurality of input and output ports, and each of the ports is connected to a corresponding low-voltage device.

2. According to claim 1, the new energy bus chassis electrical control system is characterized in that: The vehicle body main control module includes a power input port, and the power input port is electrically connected to the power bus.

3. According to claim 1, the new energy bus chassis electrical control system is characterized in that: The output port of the vehicle body main control module outputs the voltage and current that drives the low-voltage electrical equipment or outputs a control signal, and the input port collects the status information of the low-voltage electrical equipment.

4. According to claim 1, the new energy bus chassis electrical control system is characterized in that: The first body slave control module among the multiple body slave control modules includes multiple input and output ports, wherein each port is respectively connected to a position light, a turn signal light, an electric horn light, a low beam light and a fog light.

5. According to claim 1, the new energy bus chassis electrical control system is characterized in that: The second body slave control module among the multiple body slave control modules includes multiple input and output ports, wherein each port is respectively connected to a side marker light, a parking signal port, a disabled flap signal port, a defroster and a passenger USB power supply.

6. The new energy bus chassis electrical control system according to claim 1 is characterized in that: The third body slave control module among the multiple body slave control modules includes multiple input and output ports, wherein each port is respectively connected to a door opening signal port, a driver seat heating power supply, a road sign power supply, a driver light and a parking light.

7. The new energy bus chassis electrical control system according to claim 1 is characterized in that: The fourth body slave control module among the multiple body slave control modules includes multiple input and output ports, wherein each port is respectively connected to a brake light, an electric brake signal port, a reversing light, a monitoring system power supply and a rear door parking light.

8. A passenger car chassis, characterized in that: It comprises a new energy bus chassis electrical control system as described in any one of claims 1-7.

9. A passenger car, characterized in that: It comprises a new energy bus chassis electrical control system as described in any one of claims 1-7.

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