New energy automobile low-voltage domain control system and automobile

Abstract

The utility model discloses a new energy automobile low-voltage domain control system which comprises an all-in-one low-voltage domain controller and low-voltage related vehicle-mounted components, and the all-in-one low-voltage domain controller is connected to each low-voltage related vehicle-mounted component through a CAN network and used for information interaction and control between the all-in-one low-voltage domain controller and each low-voltage related vehicle-mounted component. The low-voltage controller has the advantages that the low-voltage related controllers are integrated together to form the low-voltage controller for uniformly controlling the low-voltage related functions, so that the cost is saved, the integration requirement is met, the use of wire harnesses, connectors and the like can be saved, the layout is optimized, and the use cost of the wire harnesses, the connectors and the like is reduced.

Description

Technical Field

[0001] The utility model relates to the automotive electrical field, and in particular to a new energy vehicle low-voltage domain control system and a vehicle. Background Art

[0002] The architecture of the vehicle controller in the prior art adopts a distributed architecture design, such as the patent application number 201610216421.7, a controller with a distributed architecture and a redundant power supply electric intelligent automobile electrical system, comprising a power supply unit, a key switch (16), a vehicle controller unit, a wire-controlled power unit and an automobile component controller interconnected by a power supply line, the power supply unit comprising a main battery (12) and an auxiliary battery (11), the power supply line comprising a main normal power line, an auxiliary normal power line, a main ACC line, an auxiliary ACC line, an ON line and a START line respectively connected to the key switch (16), the vehicle controller unit comprising a vehicle controller (18) and a redundant vehicle controller (20), the wire-controlled power unit comprising a wire-controlled booster and a redundant wire-controlled booster, and the automobile component controller connecting the main ACC line and the auxiliary ACC line via a single-pole double-throw relay. Compared with the prior art, the present invention solves the redundancy requirements of electric intelligent automobiles and improves the safety of automobile operation.

[0003] In the traditional distributed automotive electronic and electrical architecture, information transmission and control of various electronic and electrical systems in the vehicle are completed by the distributed automotive electronic controller (ECU). With the increasing degree of automotive electronics and the diversification of functions, the limitations of the distributed architecture and ECU have posed challenges to the production cost, function realization and future development of the vehicle.

[0004] With the rapid development of automobile intelligence, traditional distributed solutions can no longer meet the requirements of the new generation of smart cars. In the traditional distributed solution, each electronic control unit (ECU) is responsible for different systems of the vehicle. With the development of automobile electronics, the number of electronic control units in automobiles is increasing, which makes the bus bandwidth limited and the data transmission speed slow, making it difficult to meet the high-speed communication requirements of the new generation of smart cars. The traditional distributed architecture also has problems such as high coupling between software and hardware, difficulty in vehicle maintenance, and difficulty in OTA updates. Utility Model Content

[0005] The purpose of the utility model is to overcome the deficiencies of the prior art, to provide a new energy vehicle low-voltage domain control system and a vehicle, to change the distributed architecture to an integrated one, and to realize the low-voltage control system by integrating an all-in-one low-voltage domain controller.

[0006] In order to achieve the above-mentioned purpose, the technical solution adopted by the utility model is: a low-voltage domain control system for new energy vehicles, including an all-in-one low-voltage domain controller and low-voltage related vehicle-mounted components. The all-in-one low-voltage domain controller is connected to each low-voltage related vehicle-mounted component through a CAN network, and is used for information exchange and control with each low-voltage related vehicle-mounted component.

[0007] The all-in-one low-voltage domain controller integrates multiple control modules to achieve low-voltage control of the vehicle.

[0008] The control modules integrated in the all-in-one low-voltage domain controller include: one or more combinations of a battery management module, a body control module, a vehicle control module, a wireless communication module, a gateway module and a pedestrian reminder module.

[0009] The pedestrian reminder module is connected to the vehicle speed sensor based on the CAN network, and the pedestrian reminder module drives the vehicle prompt sound system to emit a prompt sound.

[0010] The prompt sound system has multiple built-in sound sources.

[0011] The gateway module is used for data exchange in the vehicle network, with one end connected to the CAN network and the other end connected to the LIN network.

[0012] The wireless communication module is connected to the Internet of Vehicles TSP platform to achieve remote data interaction.

[0013] The all-in-one low-voltage domain controller also includes a positioning module and a clock correction module for achieving positioning and time calibration.

[0014] The all-in-one low-voltage domain controller also includes a thermal management module, which is used to access the vehicle thermal management system, electric drive cooling control system, battery thermal management system and air conditioning system through CAN.

[0015] A new energy vehicle comprises a new energy vehicle low-voltage domain control system.

[0016] The advantages of the utility model are: low-voltage related controllers are integrated together to form a lower-than-domain controller to uniformly control low-voltage related functions, saving costs while meeting the requirements of integration, and can also save on the use of wiring harnesses, connectors, etc., optimize the layout, and reduce the cost of using wiring harnesses, connectors, etc. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] The following is a brief description of the contents expressed in the drawings of the present invention and the symbols in the drawings:

[0018] Figure 1 It is a network topology diagram of the low voltage domain control system of the utility model;

[0019] The Chinese and English symbols in the above figure are as follows:

[0020] MCU motor controller, EPS electric power steering system, ABS anti-lock braking system, ICM ignition system, OBC on-board charger, DCDC DC converter, RADAR radar, EAC electronic acceleration control. DETAILED DESCRIPTION

[0021] The specific implementation of the present invention will be further explained in detail below by describing the optimal embodiment with reference to the accompanying drawings.

[0022] This embodiment provides an all-in-one low-voltage domain controller for new energy vehicles, based on which the low-voltage components of the vehicle are controlled, breaking the inertia of the traditional automotive industry and leading the trend of intelligence. Low-voltage ECUs are integrated together to form an all-in-one low-voltage domain controller.

[0023] like Figure 1 As shown, a new energy vehicle low-voltage domain control system includes an all-in-one low-voltage domain controller and low-voltage related vehicle-mounted components. The all-in-one low-voltage domain controller is connected to each low-voltage related vehicle-mounted component through a CAN network, and is used for information exchange and control with each low-voltage related vehicle-mounted component.

[0024] The low-voltage related components include but are not limited to MCU motor controller, EPS electric power steering system, ABS anti-lock braking system, ICM ignition system, OBC on-board charger, DCDC DC converter, RADAR radar, EAC electronic acceleration control. The all-in-one low-voltage domain controller is used to connect with various low-voltage related components through the CAN bus, and is used to control various low-voltage related components and receive information uploaded by various low-voltage related components.

[0025] In this application, multiple control modules are integrated in the all-in-one low-voltage domain controller to achieve low-voltage control of the vehicle. The control modules integrated in the all-in-one low-voltage domain controller include: one or more combinations of a battery management module, a body control module, a vehicle control module, a wireless communication module, a gateway module, and a pedestrian reminder module.

[0026] The pedestrian reminder module is connected to the vehicle speed sensor based on the CAN network. The pedestrian reminder module drives the car prompt sound system to issue a prompt sound. The prompt sound system has multiple built-in sound sources. When the driving speed is lower than a certain value, the prompt sound issued by the car prompt sound system reminds pedestrians. The system will remind pedestrians according to the gear position and speed of the vehicle. In addition, the system has a variety of sound source switching functions, and the sound source can be set according to your preferences.

[0027] The gateway module GW is used for data exchange in the vehicle network. One end of the module is connected to the CAN network and the other end is connected to the LIN network. It can serve as a data exchange hub for the vehicle network and route network data such as CAN and LIN in different networks.

[0028] The wireless communication module TBOX is connected to the Internet of Vehicles TSP platform to achieve remote data interaction. The wireless communication module TBOX has a built-in 4G / 3G / 2G communication chip and a full-network compatible module (using LTE CAT1 / CAT4 module), which can realize remote data interaction and control. Through the 4G network, real-time data collection, calculation, and storage of vehicle body information and location information are realized, and communication with the network service platform through the mobile network is realized to realize low-latency, high-speed safety information services such as vehicle data monitoring, alarm warning, fault diagnosis, and remote vehicle operation.

[0029] The all-in-one low-voltage domain controller also includes a positioning module and a clock correction module for positioning and time calibration. It has GPS and Beidou positioning functions, time and date calibration functions, and 4G / 3G / 2G communication functions. It needs to have a full network compatible module (using LTE CAT1 / CAT4 module), an open solution, TBOX integrated 4G antenna, and an external GPS antenna (GPS positioning data is uploaded in 1S frame).

[0030] The all-in-one low-voltage domain controller also includes a thermal management module TMU, which is used to access the vehicle thermal management system, electric drive cooling control system, battery thermal management system and air conditioning system through CAN. It has functions such as vehicle thermal management, electric drive cooling system control, battery heating and cooling, and can control the functions of air conditioning and PTC.

[0031] The present application also provides a new energy vehicle, which includes a new energy vehicle low-voltage domain control system in the above-mentioned embodiment.

[0032] like Figure 1 As shown in the figure, it is a schematic diagram of the principle of an all-in-one low-voltage domain controller. The low-voltage domain controller integrates functional modules such as battery management (BMS), body control (BCM), vehicle control (VCU), wireless communication system T-BOX, gateway system (GW), pedestrian reminder, etc. These functional modules are integrated into the low-voltage controller to form a new low-voltage controller topology, such as Figure 1 As shown, this approach can improve integration while reducing the costs of distributed wiring harnesses, plug-ins, etc. in the prior art.

[0033] The low-voltage domain controller of the present application is set at a reasonable position in the front half of the vehicle and is arranged at the front end. Because the low-voltage control-related device components of the entire vehicle are close to the front end of the vehicle, better control can be achieved.

[0034] The main functions of the low-voltage domain controller include the following aspects:

[0035] Integrate various modules to realize low-voltage power up and down control of the whole vehicle, high-voltage management of the whole vehicle, vehicle mode management, charging management, energy management, component monitoring, fault diagnosis, driving safety, etc.

[0036] The functions that can be expanded through the low-voltage domain controller of this application are as follows: related low-voltage accessory control includes: combination light input, double flash switch input, horn input, main driver's window lift switch input, radar control, ignition switch, accelerator pedal, shifter, brake switch, low-voltage main relay, MCU, water pump relay, fan relay, air conditioner, PTC relay, DCDC relay controller; left front door lock / central control, left front headlight control, left turn signal control, left position light control, left front door electric window control, blower control, horn control, etc.;

[0037] Low-speed warning sound function: When the driving speed is lower than a certain value, the car warning sound system will issue a warning sound to remind pedestrians. The system will remind pedestrians according to the gear position and speed of the vehicle. In addition, the system has a variety of sound source switching functions, and the sound source can be set according to your preferences.

[0038] It can serve as the data exchange hub of the entire vehicle network and can route CAN, LIN and other network data in different networks.

[0039] Through the 4G network, the real-time data collection, calculation and storage of vehicle body location information can be realized, and through the mobile network and the network service platform communication, low-latency and high-speed safety information services such as vehicle data monitoring, alarm warning, fault diagnosis and remote vehicle operation can be realized;

[0040] It has GPS and Beidou positioning functions, time and date calibration functions, and 4G / 3G / 2G communication functions. It must have a full network compatible module (using LTE CAT1 / CAT4 module), an open solution, TBOX integrated 4G antenna, and an external GPS antenna (GPS positioning data is uploaded in 1S frame);

[0041] It has remote function, UDS online diagnosis function, EMMC (8G) function, SMS reset function, reserved Bluetooth, APP scheduled charging, communication with vehicle computer, etc.

[0042] It has functions such as vehicle body fault alarm data cloud reporting, event reporting, self-speed limit function, vehicle condition reporting, network management, electronic fence, cloud diagnosis, vehicle physical examination, etc.

[0043] Advantages of low voltage domain controller:

[0044] Compared with the traditional distributed ECU solution, the domain controller solution has the following advantages:

[0045] Lightweight, high efficiency

[0046] In the traditional distributed ECU solution, each additional new function will bring a corresponding ECU and wiring harness, resulting in a complicated wiring harness. This design concept does not conform to the lightweight rules in automobile design and will reduce the energy efficiency and mileage of the car. With the domain controller solution and integrated ECU, the vehicle can remove multiple microcontrollers, power supplies, housings and copper wires, greatly simplifying the automotive electronic structure, realizing integration and manufacturing automation, reducing the weight of electronic components, and improving driving efficiency.

[0047] Cost reduction

[0048] It is unsustainable to add an extra ECU module for new functions. The dedicated MCU, memory, power supply, PCB and other electronic components corresponding to the new ECU module will greatly increase the cost of production and manufacturing. Through the all-in-one integration method, some housings, brackets, wiring harnesses, corresponding connectors and some chips can be omitted, which can further reduce the cost of the whole vehicle.

[0049] Data Delay

[0050] Real-time processing of large amounts of data and ensuring low data latency require high-performance computing capabilities and high-bandwidth network communications. In a domain controller with high-performance computing capabilities, data only needs to be processed once and can be shared among different cores. In solutions that use a large number of ECU modules, data needs to be communicated and transmitted multiple times in different networks and calculated multiple times. Traditional distributed ECU solutions result in low computing efficiency and high data latency, which cannot guarantee the rapid response capabilities of the car in the face of various emergencies and are not safe enough.

[0051] Upgradability

[0052] As cars continue to evolve from mechanical products to digital electronic products, software level has become the core competitiveness of cars. The amount of code in car software is increasing exponentially. As the code continues to accumulate, security vulnerabilities need to be patched in a timely manner. Functional maintenance and complex software upgrades for cars will become more important. Compared with traditional distributed ECU solutions, the domain controller has scalable computing power and more flexible implementation of vehicle-free OTA, enabling automakers to provide users with a continuously iterative and upgraded functional experience.

[0053] Obviously, the specific implementation of the present invention is not limited to the above-mentioned methods. As long as various non-substantial improvements are made using the method concept and technical solution of the present invention, they are all within the protection scope of the present invention.

Claims

1. A low-voltage control system for new energy vehicles, characterized in that: It includes an all-in-one low-voltage domain controller and low-voltage related vehicle-mounted components. The all-in-one low-voltage domain controller is connected to each low-voltage related vehicle-mounted component through a CAN network, and is used for information exchange and control with each low-voltage related vehicle-mounted component.

2. A new energy vehicle low voltage domain control system as claimed in claim 1, characterized in that: The all-in-one low-voltage domain controller integrates multiple control modules to achieve low-voltage control of the vehicle.

3. A new energy vehicle low voltage control system as claimed in claim 2, characterized in that: The control modules integrated in the all-in-one low-voltage domain controller include: one or more combinations of a battery management module, a body control module, a vehicle control module, a wireless communication module, a gateway module and a pedestrian reminder module.

4. A new energy vehicle low voltage control system as claimed in claim 3, characterized in that: The pedestrian reminder module is connected to the vehicle speed sensor based on the CAN network, and the pedestrian reminder module drives the vehicle prompt sound system to emit a prompt sound.

5. A new energy vehicle low voltage control system as claimed in claim 4, characterized in that: The prompt sound system has multiple built-in sound sources.

6. A new energy vehicle low voltage control system as claimed in claim 3, characterized in that: The gateway module is used for data exchange in the vehicle network, with one end connected to the CAN network and the other end connected to the LIN network.

7. A new energy vehicle low voltage control system as claimed in claim 3, characterized in that: The wireless communication module is connected to the Internet of Vehicles TSP platform to achieve remote data interaction.

8. A new energy vehicle low voltage control system as claimed in claim 3, characterized in that: The all-in-one low-voltage domain controller also includes a positioning module and a clock correction module for achieving positioning and time calibration.

9. A new energy vehicle low voltage domain control system as described in any one of claims 1 to 8, characterized in that: The all-in-one low-voltage domain controller also includes a thermal management module, which is used to access the vehicle thermal management system, electric drive cooling control system, battery thermal management system and air conditioning system through CAN.

10. A new energy vehicle, characterized in that: The automobile includes a new energy automobile low-voltage domain control system as described in any one of claims 1-8.

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