KR-102962993-B1 - DRIVING CONTROL APPARATUS AND METHOD FOR VEHICLE

KR102962993B1KR 102962993 B1KR102962993 B1KR 102962993B1KR-102962993-B1

Abstract

The present invention relates to a driving control device and method for an automobile, wherein the driving of the automobile is controlled using two control units, and the operation according to the control signals of the two control units is registered and processed in a register, and the signal applied from the two control units is selected according to the mode to control the voltage of the battery applied to the motor, thereby allowing the automobile to be easily controlled even if a malfunction occurs in either of the control units, preventing interference or operational errors between control signals, preventing safety accidents, and improving safety during the driving of the vehicle.

Inventors

김영석
박형민

Assignees

현대모비스 주식회사

Dates

Publication Date: 20260511
Application Date: 20210901

Claims (20)

A battery that provides operating power for a vehicle; A battery management system (BMS) that manages the state of the battery and provides state information of the battery; A first control unit that controls the operation of the vehicle based on the operating power of the battery; and A second control unit that performs emergency operation when an abnormality is detected in the first control unit; comprising The battery management system (BMS) receives a first control signal from the first control unit and a second control signal from the second control unit, and supplies or cuts off the operating power of the battery to a load in response to either the first control signal or the second control signal based on the state of the first control unit and a set mode. The above battery management system is, Process the first control signal based on the data registered in the first register, and A driving control device for an automobile characterized by processing the second control signal based on data registered in the second register and delay setting data registered in the third register.
In Article 1, The above battery management system (BMS) is, A switching unit connected to the above battery to supply or cut off the operating power of the above battery to a load; and A driving control device for an automobile comprising: a driving control unit that receives and processes the first control signal and the second control signal and applies an operation signal to the switching unit based on one of the control signals according to a mode.
In Article 2, The above drive control unit includes a monitoring unit that detects an abnormality in the first control unit based on data from the first control unit and outputs a detection result; A first signal processing unit connected to the first control unit and processing the first control signal; A second signal processing unit connected to the second control unit and processing the second control signal; and A driving control device for an automobile comprising: a signal control unit that generates an operation signal according to the mode based on the detection result and the signal output from the first signal processing unit and the second signal processing unit.
In Paragraph 3, The first signal processing unit transmits and receives signals based on a serial interface with the first control unit, and A driving control device for an automobile, characterized in that the second signal processing unit receives a pin driving signal from the second control unit.
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In Paragraph 3, The above signal control unit is, A first judgment unit that ignores the second control signal and generates an operation signal for controlling driving based on the detection result of the monitoring unit and the first control signal processed through the first signal processing unit; A second judgment unit that ignores the first control signal and generates an operation signal that controls driving in response to the second control signal processed through the second signal processing unit; A third judgment unit that generates an operation signal controlling driving based on a preset priority, based on the detection result, the first control signal, and the second control signal; and A driving control device for an automobile comprising: a switching signal unit that applies an operation signal of any one of the first judgment unit, the second judgment unit, and the third judgment unit to the switching unit according to the set mode.
In Article 6, The second judgment unit operates to maintain the preset setting if it determines that the first control unit is uncontrollable based on the detection result, and A driving control device for an automobile characterized by generating an operation signal to cut off the operating power of the battery according to the second control signal above.
In Article 6, A driving control device for an automobile, characterized in that the third judgment unit sequentially controls driving according to the first control signal and the second control signal in response to the received time.
In Article 6, A driving control device for an automobile, characterized in that the third judgment unit controls driving by selecting one of the control signals according to the priority when the first control signal and the second control signal are received simultaneously or when the first control signal and the second control signal are different.
In Article 6, If the third judgment unit determines that the first control unit is uncontrollable based on the detection result, it maintains the preset setting, and A driving control device for an automobile characterized by generating an operation signal to cut off the operating power of the battery according to the second control signal above.
In Article 7 or Article 10, A driving control device for an automobile, characterized in that the signal control unit applies an operation signal to the switching unit to cut off the operating power of the battery after a certain period of time has elapsed in response to a delay setting.
A step in which a first control signal of a first control unit controlling the operation of a vehicle and a second control signal of a second control unit performing emergency operation when an abnormality is detected by the first control unit are input to a battery management system (BMS); A step of processing the first control signal and the second control signal, respectively; A step of detecting whether the first control unit is abnormal based on the data of the first control unit and generating a detection result; Based on the detection result and the set mode, a step of generating an operation signal that controls driving in correspondence with either the first control signal or the second control signal; and The method includes the step of supplying or cutting off the operating power of the battery according to the above operating signal; The above signal processing step is, A step of processing the first control signal based on data registered in the first register; and A control method for an automobile drive control device comprising the step of processing the second control signal based on data registered in the second register and delay setting data registered in the third register.
In Article 12, The above signal processing step is, The step of receiving the first control signal through a serial interface; and A control method for an automobile drive control device further comprising the step of receiving the second control signal as a pin driving signal.
In Article 12, The step of generating the above operation signal is, When the above mode is the first mode, the operation signal is generated in response to the first control signal, and If the above mode is the second mode, the operation signal is generated in response to the second control signal, and A control method for an automobile drive control device characterized by generating the operation signal in response to either the first control signal or the second control signal when the above mode is the third mode.
In Article 14, The step of generating the above operation signal is, A control method for an automobile drive control device characterized by setting the second mode when the first control unit is determined to be uncontrollable according to the detection result above.
In Article 12, The step of generating the above operation signal is, A control method for an automobile drive control device characterized by, in response to the above detection result, when the first control unit is normal, ignoring the second control signal and generating the operation signal that controls driving in response to the first control signal.
In Article 12, The step of generating the above operation signal is, In response to the detection result above, if the first control unit is determined to be uncontrollable, the step of ignoring the first control signal and maintaining the preset setting; and A control method for an automobile drive control device further comprising the step of generating an operation signal to cut off the operating power of the battery when the second control signal is received.
In Article 12, The step of generating the above operation signal is, A step of generating the operation signal that sequentially controls the driving in correspondence with the time of reception among the first control signal and the second control signal; and A control method for an automobile drive control device further comprising: a step of generating an operation signal that controls driving by selecting one of the control signals according to a preset priority when the first control signal and the second control signal are received simultaneously or when the first control signal and the second control signal are different.
In Article 18, A step of maintaining the preset setting if the first control unit is determined to be uncontrollable according to the detection result above; and A control method for an automobile drive control device further comprising the step of generating an operation signal to cut off the operating power of the battery according to the second control signal.
In Article 12, When the operating power of the above battery is cut off, A step of waiting for a certain period of time in response to a delay setting; and A control method for an automobile drive control device further comprising the step of cutting off the operating power of the battery by applying the operation signal after the above predetermined time has elapsed.

Description

Driving Control Apparatus and Method for Vehicle The present invention relates to a driving control device for a vehicle and a method thereof, which uses two control units to control the vehicle even if a malfunction occurs in either of the control units. An automobile is composed of multiple processors, driving means, and multiple auxiliary systems, and these multiple components are combined and organically connected to operate in conjunction with each other. Such vehicles are configured to stop and become inoperable if a malfunction occurs in the main controller controlling their operation, as the vehicle can no longer be driven. Accordingly, active research is being conducted on measures to enable vehicles to maintain driving or stop safely even if a malfunction occurs while driving. For example, an automobile may be equipped with multiple control means for controlling a motor or engine, or with multiple control means for a brake system for stopping the vehicle, or with multiple brake systems. Korean Published Patent No. 10-2019-0016824 describes a dual-type vehicle control device configured such that, in the event of an error in one electronic control unit, the other electronic control unit is activated and the unit with the error is reset to eliminate the error. However, simply having two control units is insufficient; recovery via reset is only possible for simple errors, and there is a problem in that it cannot handle major errors, such as motor operation. Accordingly, a method to control the vehicle more stably is needed. FIG. 1 is a block diagram briefly illustrating the configuration of a driving control device of an automobile according to one embodiment of the present invention. FIG. 2 is a block diagram briefly illustrating the configuration of the drive control unit of FIG. 1. FIG. 3 is a block diagram briefly illustrating the configuration of the signal control unit of FIG. 2. FIG. 4 is a flowchart illustrating a control method of a driving control device of an automobile according to an embodiment of the present invention. The present invention will be described below with reference to the attached drawings. In this process, the thickness of lines or the size of components depicted in the drawings may be exaggerated for the sake of clarity and convenience of explanation. Furthermore, the terms described below are defined considering their functions in the present invention, and these may vary depending on the intent or convention of the user or operator. Therefore, the definitions of these terms should be based on the content throughout this specification. FIG. 1 is a block diagram briefly illustrating the configuration of a driving control device of an automobile according to one embodiment of the present invention. As illustrated in FIG. 1, the automobile (10) includes a first control unit (110), a second control unit (120), a battery (160), a battery management system (BMS) (130), a relay (170), a motor (not shown), a motor drive unit (not shown), and a memory (not shown). The vehicle includes various other components such as a steering system, braking system, charging unit, regulator, transformer unit, and sensor unit, but a description thereof will be omitted below. It is specified that the vehicle (10) is an electric vehicle or a hybrid vehicle that drives by using the charging power of a battery to drive a motor. The battery (160) is composed of multiple battery cells, is charged through an external power source or power generated within the vehicle, and supplies operating power to each component of the vehicle including the motor. The battery (160) supplies an operating voltage to the motor and can be charged by regenerative energy recovered through the motor in a regenerative braking mode by brake braking, or by a charging current supplied from the outside. In some cases, the battery (160) may be composed of a high-voltage battery (not shown) and a low-voltage battery (not shown). A battery management system (BMS) (130) is connected to a battery (160) and detects and manages the state of the battery (160). The battery management system (BMS) (130) manages the charging and discharging of the battery (130) and comprehensively detects information such as the voltage, current, and temperature of the battery (160) to manage and control the state of charge (SOC) and the amount of charging and discharging current. The battery management system (BMS) (130) includes a drive control unit (140) and a switching unit (150). Additionally, the battery management system (BMS) (130) further includes means such as sensors for checking and managing the state of the battery. The switching unit (150) is connected to the battery (160) and controls the ON/OFF state of the operating power of the battery being applied to the relay (170). The switching unit (150) may include at least one switching means including a transistor such as a BJT, FET, MOSFET, or a relay. The drive control unit (140) is connected t