Low-voltage electric appliance optimization framework of light bus

Abstract

The utility model discloses a light bus low-voltage electric appliance optimization framework, which belongs to the technical field of vehicle-mounted electronics, comprises a main control BCM (Body Control Module), a main driving door slave control module, a co-driving door slave control module and a rear door slave control module, solves the technical problems of modular framework design of light bus low-voltage electric appliances and reduction of wire consumption, and adopts an LIN (Local Interconnect Network) bus and a CAN (Controller Area Network) bus for communication. The total length of wires needing to be laid is reduced, the use of wires can be reduced by about 10% in advance, different functions are integrated in respective slave control modules, each module independently controls the corresponding door electric appliance function, the complexity and length of the wire harness are reduced, and the whole wire harness system becomes lighter and more convenient due to the fact that fewer wires and thinner wire harnesses are adopted. The fuel efficiency of the vehicle is improved, the production and installation cost is reduced, standardized interfaces and connectors are used, the production and maintenance process is simplified, and meanwhile the compatibility and interchangeability between modules are improved.

Description

Technical Field

[0001] The utility model belongs to the technical field of vehicle-mounted electronics, and in particular relates to an optimized architecture of low-voltage electrical appliances for light passenger vehicles. Background Art

[0002] At present, automotive electronic technology has made significant progress, but the low-voltage electrical technology of passenger cars is already very mature. However, in terms of light bus electrical systems, the design concepts and technologies still have the following obvious shortcomings:

[0003] Limitations of traditional control methods: Many light buses still use traditional control methods of relays and switches. This method has complex circuits, difficult fault diagnosis, and many designs are still imitating the electrical system of Toyota Coaster in the 1990s, lacking modern improvements and optimization.

[0004] Structural and lightweight requirements: Light buses are generally between 5 and 7 meters long and more than 2 meters high. The wiring harness of the traditional low-voltage electrical architecture is heavy, which is outdated in the current trend of pursuing lightweight. This not only affects the energy efficiency of the vehicle, but also increases the complexity of manufacturing and maintenance.

[0005] Challenges brought by diversified configurations: Light bus customers often have multiple optional configuration requirements, which requires frequent revisions of low-voltage wiring harness designs, which greatly increases the workload of technicians. At the same time, frequent revisions of drawings also increase the possibility of errors, affecting production efficiency and product quality.

[0006] Supply chain and after-sales service issues: Light bus OEMs are often prone to changing suppliers, which leads to frequent changes in the electrical architecture and constant adjustments to the drawings. After-sales service personnel need to constantly learn new knowledge to maintain their service capabilities, which poses a challenge to the knowledge inheritance of new and old employees, easily creates knowledge blind spots, and affects service quality. Utility Model Content

[0007] The utility model aims to provide an optimized architecture of low-voltage electrical appliances for light buses, which solves the technical problems of modular architecture design of low-voltage electrical appliances for light buses and reducing the amount of wire material used.

[0008] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0009] An optimized architecture of low-voltage electrical appliances for a light passenger vehicle includes a main control BCM, a main driver door slave control module, a co-driver door slave control module and a rear door slave control module, wherein the main driver door slave control module, the co-driver door slave control module and the rear door slave control module are connected to the main control BCM via different LIN buses respectively;

[0010] The master control BCM is connected to the instrument, EDR, VCU and ECU via the CAN bus;

[0011] The main driver door slave control module is used to control the main driver door components and collect signals generated by the main driver door components; the main driver door slave control module is connected to the main driver door components via a LIN bus, a CAN bus or a wire for transmitting switch signals;

[0012] The passenger door slave control module is used to control the passenger door components and collect signals generated by the passenger door components; the passenger door slave control module and the passenger door components are connected via a LIN bus, a CAN bus or a wire for transmitting switch signals;

[0013] The backdoor slave control module is used to control the backdoor components and collect signals generated by the backdoor components; the backdoor slave control module and the backdoor components are connected via a LIN bus, a CAN bus or a wire for transmitting switch signals.

[0014] Preferably, the main driver door components include a main driver door glass control component, a main driver rearview mirror control component, a main driver step light, a main driver turn signal light and a main driver small light;

[0015] The signals generated by the main driver's door components include the main driver's door glass lifting signal, the main driver's door glass unlocking signal, the main driver's door glass locking signal, the main driver's door mirror replacement signal, the main driver's door mirror heating signal, the main driver's door mirror folding signal, the main driver's door step light status signal, the main driver's door turn signal status signal and the main driver's door low light status signal.

[0016] Preferably, the passenger door components include a passenger door glass control component, a passenger rearview mirror control component, a passenger step light, a passenger turn signal light and a passenger small light;

[0017] The signals generated by the passenger door components include the passenger door glass lifting signal, passenger door glass unlocking signal, passenger door glass locking signal, passenger rearview mirror replacement signal, passenger rearview mirror heating signal, passenger rearview mirror folding signal, passenger step light status signal, passenger turn signal status signal and passenger low light status signal.

[0018] Preferably, the rear door components include a rear door lock, a rear wiper motor, a reversing light, a brake light, a rear turn signal light, a rear small light, a rear fog light, a trunk light and a rear roof light;

[0019] The signals generated by the rear door components include rear door unlocking signal, rear door locking signal, rear wiper motor status signal, reversing light status signal, brake light status signal, rear turn signal status signal, rear small light status signal, rear fog light status signal, trunk light status signal and rear roof light status signal.

[0020] Preferably, the master control BCM is deployed below the instrument panel or in the center console area, the main driver door slave control module is deployed inside the main driver door, the passenger door slave control module is deployed inside the passenger door, and the rear door slave control module is deployed inside the rear door or the trunk lid.

[0021] The utility model discloses an optimized architecture of low-voltage electrical appliances for light buses, which solves the technical problems of modular architecture design and wire usage reduction of low-voltage electrical appliances for light buses. The utility model replaces the traditional point-to-point wiring method by adopting LIN bus and CAN bus communications, thereby reducing the total length of wires to be laid, and is estimated to reduce wire usage by about 10%. Different functions are integrated in their respective slave control modules, so that each module independently controls its corresponding door electrical function, reducing the complexity and length of the wiring harness. Due to the use of fewer wires and thinner wiring harnesses, the entire wiring harness system becomes lighter, which helps to improve the fuel efficiency of the vehicle and reduce production and installation costs. The use of standardized interfaces and connectors helps to simplify the production and maintenance process, while improving the compatibility and interchangeability between modules. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 It is a system architecture diagram of the present utility model. DETAILED DESCRIPTION

[0023] Depend on Figure 1 The illustrated example shows an optimized architecture of low-voltage electrical appliances for a light passenger vehicle, including a main control BCM, a main driver door slave control module, a co-driver door slave control module, and a rear door slave control module. The main driver door slave control module, the co-driver door slave control module, and the rear door slave control module are connected to the main control BCM via different LIN buses.

[0024] The master BCM is connected to the instrument panel, EDR, VCU and ECU via the CAN bus; the master BCM is deployed under the instrument panel or in the center console area to facilitate centralized management and connection with other main control units.

[0025] The main control BCM is connected to the instrument via the CAN bus and is responsible for exchanging data with the instrument panel.

[0026] The master BCM and EDR are connected via the CAN bus for recording and processing event data.

[0027] The main control BCM is connected to the VCU and ECU via the CAN bus to perform vehicle control and engine management.

[0028] In this embodiment, the main control BCM serves as the core control module of the entire low-voltage electrical system. It is responsible for communicating and exchanging data with components such as instruments, EDR (event data recorder), VCU (body control unit), ECU (engine control unit), and controlling the main electrical functions in the vehicle.

[0029] The model of the master BCM can be Delphi F2BCM or Bosch's BCM 7 series.

[0030] The main driver's door slave control module is used to control the main driver's door components and collect signals generated by the main driver's door components; the main driver's door slave control module is connected to the main driver's door components via a LIN bus, a CAN bus or a wire that transmits a switch signal; the main driver's door slave control module is deployed inside the main driver's door and can be located close to the door lock and the glass lifter, which is conducive to reducing the length of the wiring harness and simplifying the wiring.

[0031] The main driver door components include a main driver door glass control component, a main driver rearview mirror control component, a main driver step light, a main driver turn signal light and a main driver small light;

[0032] The signals generated by the main driver's door components include the main driver's door glass lifting signal, the main driver's door glass unlocking signal, the main driver's door glass locking signal, the main driver's door mirror replacement signal, the main driver's door mirror heating signal, the main driver's door mirror folding signal, the main driver's door step light status signal, the main driver's door turn signal status signal and the main driver's door low light status signal.

[0033] In this embodiment, the main driver door glass control component is a glass lifter, and the main driver door slave control module is directly connected to the motor that controls the glass lifter through a wire that transmits a switch signal.

[0034] The main driver's door slave control module is connected to the rearview mirror adjustment, heating and folding motors through wires that transmit switch signals.

[0035] The main driver's door slave control module is connected to the corresponding lamps through wires that transmit switch signals.

[0036] The main driver's door slave control module controls all electrical components of the main driver's door and collects signals generated by these components, including glass lifting, electric rearview mirror adjustment, heating and folding, step lights, turn signals and small lights, etc.

[0037] The model of the master door slave control module can be Continental's door control module DCM 5 or Delphi's DCS-600 series.

[0038] The passenger door slave control module is used to control the passenger door components and collect signals generated by the passenger door components; the passenger door slave control module and the passenger door components are connected via a LIN bus, a CAN bus or a wire that transmits switch signals; the passenger door slave control module is deployed inside the passenger door, which may be close to the door lock and the window lifter.

[0039] The passenger door components include a passenger door glass control component, a passenger rearview mirror control component, a passenger step light, a passenger turn signal light and a passenger small light;

[0040] The signals generated by the passenger door components include the passenger door glass lifting signal, passenger door glass unlocking signal, passenger door glass locking signal, passenger rearview mirror replacement signal, passenger rearview mirror heating signal, passenger rearview mirror folding signal, passenger step light status signal, passenger turn signal status signal and passenger low light status signal.

[0041] In this embodiment, the passenger door glass control component is also a glass lifter, and the passenger door slave control module is directly connected to the motor of the glass lifter that controls the passenger door glass control component through a wire that transmits a switch signal.

[0042] The passenger door slave control module is connected to the passenger rearview mirror adjustment, heating and folding motor via a wire that transmits switch signals.

[0043] The passenger door slave control module is connected to corresponding lamps through wires that transmit switch signals.

[0044] The passenger door slave control module is similar to the main driver door slave control module, which is responsible for controlling all the electrical components of the passenger door and collecting the signals generated by these components, including glass lifting, electric rearview mirror adjustment, heating and folding, step lights, turn signals and small lights, etc.

[0045] The model of the passenger door slave module can be Bosch's passenger door module PMM 2 or Continental's DCM 3 series.

[0046] The rear door slave control module is used to control the rear door components and collect signals generated by the rear door components; the rear door slave control module and the rear door components are connected via a LIN bus, a CAN bus or a wire that transmits switch signals; the rear door slave control module is deployed inside the rear door or the trunk lid, and can be located close to the rear wiper motor and the taillights, so as to facilitate the control of the rear electrical components and reduce the length and complexity of the wiring harness.

[0047] The rear door components include rear door locks, rear wiper motors, reversing lights, brake lights, rear turn signals, rear small lights, rear fog lights, trunk lights and rear roof lights;

[0048] The signals generated by the rear door components include rear door unlocking signal, rear door locking signal, rear wiper motor status signal, reversing light status signal, brake light status signal, rear turn signal status signal, rear small light status signal, rear fog light status signal, trunk light status signal and rear roof light status signal.

[0049] In this embodiment, the rear door glass control component is also a glass lifter, and the rear door slave control module is directly connected to the motor of the glass lifter that controls the rear door glass control component through a wire that transmits a switch signal.

[0050] The rear door slave control module is connected to the rear door mirror adjustment, heating and folding motors via wires that transmit switch signals.

[0051] The rear door slave control modules are connected to corresponding lamps through wires that transmit switch signal.

[0052] The rear door slave control module is connected to the door lock controller via a wire that transmits a switch signal.

[0053] The rear door slave control module controls all electrical components of the rear door and collects the signals generated by these components, including the rear wiper motor, reversing lights, brake lights, rear turn signals, small lights, fog lights, trunk lights and ceiling lights.

[0054] The model of the rear door slave control module can be Magna's rear door control module RDM 4 or Valeo's RTM 300 series.

[0055] In actual application, if the light bus has a middle door, since the electrical functions of the middle door of a light bus are generally simple, such as only glass upgrades, door locks, and step lights, the same module as the front side door can be used, or the main control module can be used for control, depending on the overall vehicle layout and cost budget.

[0056] The utility model adopts a distributed control module design and connects to the main control BCM through the LIN bus, replacing the traditional star wiring structure and reducing the complexity of the wiring harness. Each control module is responsible for a group of functionally related components, and the wiring becomes more centralized and orderly, which is convenient for installation and maintenance.

[0057] The utility model discloses an optimized architecture of low-voltage electrical appliances for light buses, which solves the technical problems of modular architecture design and wire usage reduction of low-voltage electrical appliances for light buses. The utility model replaces the traditional point-to-point wiring method by adopting LIN bus and CAN bus communications, thereby reducing the total length of wires to be laid, and is estimated to reduce wire usage by about 10%. Different functions are integrated in their respective slave control modules, so that each module independently controls its corresponding door electrical function, reducing the complexity and length of the wiring harness. Due to the use of fewer wires and thinner wiring harnesses, the entire wiring harness system becomes lighter, which helps to improve the fuel efficiency of the vehicle and reduce production and installation costs. The use of standardized interfaces and connectors helps to simplify the production and maintenance process, while improving the compatibility and interchangeability between modules.

Claims

1. An optimized architecture of low-voltage electrical appliances for light passenger vehicles, characterized in that: It includes a main control BCM, a main driver door slave control module, a co-driver door slave control module and a rear door slave control module. The main driver door slave control module, the co-driver door slave control module and the rear door slave control module are connected to the main control BCM through different LIN buses respectively; The master control BCM is connected to the instrument, EDR, VCU and ECU via the CAN bus; The main driver door slave control module is used to control the main driver door components and collect signals generated by the main driver door components; the main driver door slave control module is connected to the main driver door components via a LIN bus, a CAN bus or a wire for transmitting switch signals; The passenger door slave control module is used to control the passenger door components and collect signals generated by the passenger door components; the passenger door slave control module and the passenger door components are connected via a LIN bus, a CAN bus or a wire for transmitting switch signals; The backdoor slave control module is used to control the backdoor components and collect signals generated by the backdoor components; the backdoor slave control module and the backdoor components are connected via a LIN bus, a CAN bus or a wire for transmitting switch signals.

2. The optimized architecture of low-voltage electrical appliances for light passenger vehicles as claimed in claim 1, characterized in that: The main driver door components include a main driver door glass control component, a main driver rearview mirror control component, a main driver step light, a main driver turn signal light and a main driver small light; The signals generated by the main driver's door components include the main driver's door glass lifting signal, the main driver's door glass unlocking signal, the main driver's door glass locking signal, the main driver's door mirror replacement signal, the main driver's door mirror heating signal, the main driver's door mirror folding signal, the main driver's door step light status signal, the main driver's door turn signal status signal and the main driver's door low light status signal.

3. The optimized architecture of low-voltage electrical appliances for light passenger vehicles as claimed in claim 1, characterized in that: The passenger door components include a passenger door glass control component, a passenger rearview mirror control component, a passenger step light, a passenger turn signal light and a passenger small light; The signals generated by the passenger door components include the passenger door glass lifting signal, passenger door glass unlocking signal, passenger door glass locking signal, passenger rearview mirror replacement signal, passenger rearview mirror heating signal, passenger rearview mirror folding signal, passenger step light status signal, passenger turn signal status signal and passenger low light status signal.

4. The optimized architecture of low-voltage electrical appliances for light passenger vehicles as claimed in claim 1, characterized in that: The rear door components include rear door locks, rear wiper motors, reversing lights, brake lights, rear turn signals, rear small lights, rear fog lights, trunk lights and rear roof lights; The signals generated by the rear door components include rear door unlocking signal, rear door locking signal, rear wiper motor status signal, reversing light status signal, brake light status signal, rear turn signal status signal, rear small light status signal, rear fog light status signal, trunk light status signal and rear roof light status signal.

5. The optimized architecture of low-voltage electrical equipment for a light passenger vehicle as claimed in claim 1, characterized in that: The master control BCM is deployed under the instrument panel or in the center console area, the main driver door slave control module is deployed inside the main driver door, the passenger door slave control module is deployed inside the passenger door, and the rear door slave control module is deployed inside the rear door or the trunk lid.

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