WO2023001038A1 - P档驻车监控方法、监控系统和电动汽车 - Google Patents

P档驻车监控方法、监控系统和电动汽车 Download PDF

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Publication number
WO2023001038A1
WO2023001038A1 PCT/CN2022/105446 CN2022105446W WO2023001038A1 WO 2023001038 A1 WO2023001038 A1 WO 2023001038A1 CN 2022105446 W CN2022105446 W CN 2022105446W WO 2023001038 A1 WO2023001038 A1 WO 2023001038A1
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WIPO (PCT)
Prior art keywords
parking
gear
signal
wheel speed
vehicle
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PCT/CN2022/105446
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English (en)
French (fr)
Inventor
张天强
张鑫
刘元治
马腾
李嘉石
周春雨
霍海涛
尚蕴志
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中国第一汽车股份有限公司
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Publication of WO2023001038A1 publication Critical patent/WO2023001038A1/zh

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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60L—PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
    • B60L15/00—Methods, circuits, or devices for controlling the traction-motor speed of electrically-propelled vehicles
    • B60L15/20—Methods, circuits, or devices for controlling the traction-motor speed of electrically-propelled vehicles for control of the vehicle or its driving motor to achieve a desired performance, e.g. speed, torque, programmed variation of speed
    • B60L15/2009—Methods, circuits, or devices for controlling the traction-motor speed of electrically-propelled vehicles for control of the vehicle or its driving motor to achieve a desired performance, e.g. speed, torque, programmed variation of speed for braking
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
    • Y02T10/00—Road transport of goods or passengers
    • Y02T10/60—Other road transportation technologies with climate change mitigation effect
    • Y02T10/72—Electric energy management in electromobility

Definitions

  • the present application relates to the technical field of pure electric vehicle parking, for example, it relates to a P-range parking monitoring method, a monitoring system and an electric vehicle.
  • pure electric vehicles are generally equipped with P gear in the gear configuration, and have a separate parking system, or a parking controller to control the locking mechanism or EPB (Electronic Parking Brake System) to realize the parking function.
  • EPB Electrical Parking Brake System
  • the P gear parking failure such as EPB or EPARK (electronic braking) system failure
  • the parking control method in the related art cannot provide timely and effective parking measures.
  • the present application provides a P-range parking monitoring method, a monitoring system and an electric vehicle, so as to avoid unsafe parking after the P-range parking fails.
  • a P file parking monitoring method comprising:
  • the vehicle controller collects the wheel speed signal, the P gear signal and the P gear parking feedback signal, and judges whether the P gear parking is normal according to the wheel speed signal, the P gear signal and the P gear parking feedback signal, Carry out vehicle parking based on the judging result that the P gear parking fails.
  • the present application also provides a P-gear parking monitoring system for realizing the P-gear parking monitoring method, and the P-gear parking monitoring system includes:
  • the gear position controller is set to collect the driver's P gear parking demand and send the P gear signal;
  • the parking controller is configured to receive the P gear signal and perform P gear parking, and at the same time send a P gear parking feedback signal;
  • the vehicle controller is configured to receive the wheel speed signal, the P gear signal, and the P gear parking feedback signal, and judge according to the wheel speed signal, the P gear signal, and the P gear parking feedback signal Whether the P gear parking is normal, based on the judgment result of the P gear parking failure, the whole vehicle is parked.
  • the present application also provides an electric vehicle, including the P-range parking monitoring system.
  • Fig. 1 is the flowchart of a kind of P file parking monitoring method of the present application
  • Fig. 2 is a schematic structural diagram of a P-range parking monitoring system of the present application.
  • connection should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integrated ; It can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediary, and it can be the internal communication of two components or the interaction relationship between two components.
  • connection can be a fixed connection, a detachable connection, or an integrated ; It can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediary, and it can be the internal communication of two components or the interaction relationship between two components.
  • a first feature being "on” or “under” a second feature may include direct contact between the first and second features, and may also include the first and second features Not in direct contact but through another characteristic contact between them.
  • “above”, “above” and “above” the first feature on the second feature include that the first feature is directly above and obliquely above the second feature, or simply means that the first feature is higher in level than the second feature.
  • “Below”, “beneath” and “under” the first feature to the second feature include that the first feature is directly below and obliquely below the second feature, or simply means that the first feature has a lower level than the second feature.
  • a P-range parking monitoring method, monitoring system and electric vehicle provided by the present application will be described in detail below with reference to FIG. 1 and FIG. 2 .
  • the embodiment of the present application firstly provides a P-range parking monitoring method, as shown in the flow chart in FIG. , and according to the wheel speed signal, the P gear signal and the P gear parking feedback signal, it is judged whether the P gear parking is normal, and based on the judgment result of the P gear parking failure, the vehicle is parked.
  • a kind of P gear parking monitoring method of the embodiment of the present application can monitor the P gear parking state by collecting the wheel speed signal, P gear signal and P gear parking feedback signal in real time. car feedback signal, it is necessary to further judge whether the P gear parking is valid through the wheel speed to ensure safe parking. If the P gear parking is effective, safe parking can be realized. Implement vehicle parking to avoid the danger of slipping. It should be noted that, in this embodiment, whether the P gear is parked is judged comprehensively by the wheel speed signal, the P gear signal and the P gear parking feedback signal, and the P gear signal reflects the driver's P gear parking demand.
  • the P gear parking feedback signal reflects the operation of P gear parking
  • the wheel speed signal reflects the wheel speed after P gear parking, and then can give a judgment on whether P gear parking is normal.
  • the vehicle controller 3 when the vehicle controller 3 receives the P gear signal and the P gear parking feedback signal, it judges the wheel speed based on the real-time received wheel speed signal, and determines the P gear parking position based on the judgment result that the wheel speed is not zero. invalidated.
  • the P gear monitoring method provided in the embodiment of the present application judges whether the P gear parking is normal through the wheel speed signal, the P gear signal and the P gear parking feedback signal. For example, if the vehicle controller 3 receives the P gear signal and After the P gear parking feedback signal, if the wheel speed is determined to be 0, it is considered that the P gear parking is effective and safe parking can be realized. If the wheel speed is not 0, it is considered that the P gear parking is invalid, and it can be implemented in time. Park the whole vehicle to avoid the danger of slipping. It should be noted that in this embodiment, whether the wheel speed is 0 is used as the judgment basis for judging whether the P gear parking is valid.
  • the vehicle determines whether the wheel speed collected in real time meets a certain The duration of the speed interval. After the vehicle is parked, it can continue to collect wheel speed signals and judge the wheel speed, and send a parking failure alarm to the driver based on the judgment result that the wheel speed is still not 0 or the duration exceeds the threshold within the specified speed range , to avoid dangerous accidents caused by slipping or insufficient parking.
  • the vehicle controller 3 sends a vehicle parking signal to the motor controller 4 , and the motor controller 4 performs vehicle parking through the power motor 5 .
  • vehicle parking is a parking method that is independent of P gear parking.
  • the torque output of the power motor 5 is controlled by the motor controller 4 to realize braking and parking of the wheels. It can be understood that according to To judge whether the P gear parking is normal, when the wheel speed is 0, it is considered that the parking is effective. Therefore, in the present embodiment, the vehicle parking signal sent by the vehicle controller 3 to the motor controller 4 is that the wheel speed is equal to zero. Torque signal, the motor controller 4 controls the power motor 5 to work according to the corresponding torque signal, so as to realize braking and parking.
  • the P file parking monitoring system includes a gear position controller 1, a parking controller 2 and The vehicle controller 3, wherein the gear controller 1 is set to collect the driver's P gear parking demand and send the P gear signal; the parking controller 2 is set to receive the P gear signal and carry out the P gear parking, and at the same time send P gear parking feedback signal; the vehicle controller 3 is set to receive the wheel speed signal, P gear signal and P gear parking feedback signal, and judge the P gear parking feedback signal according to the wheel speed signal, P gear signal and P gear parking feedback signal. Whether the vehicle is normal or not, the whole vehicle is parked based on the judgment result that the P gear parking fails.
  • a P-range parking monitoring system during the parking process, the gear position controller 1 and the parking controller 2 are connected through the vehicle controller 3, and the wheel speed signal, the P-range signal and the P-range signal are collected.
  • the parking feedback signal can monitor the P gear parking function in real time. When the P gear fails, whether it is due to the failure of the locking mechanism or the control system of the parking system, it can be found and the vehicle can be parked in time to avoid Simply relying on the danger of slipping when parking in P gear.
  • the P-range parking monitoring system further includes a motor controller 4 configured to receive a vehicle parking signal sent by the vehicle controller, and perform vehicle parking through the power motor 5 .
  • the gear position controller 1, the parking controller 2 and the motor controller 4 are all connected to the vehicle controller 3, so that the vehicle controller 3 can receive the P gear signal and the P gear parking feedback signal, and send The vehicle parking signal, the motor controller 4 controls the power motor 5 to work according to the vehicle parking signal, so as to realize the braking and parking of the wheels, realize safe parking under the condition of P gear parking failure, and avoid rolling accidents occur.
  • the vehicle parking signal is a torque signal whose wheel speed is equal to zero.
  • the wheel speed is zero as the criterion for judging whether the P gear parking is valid. After receiving the P gear signal and the P gear parking feedback signal, if the wheel speed is still not zero, it is considered that the P gear If the gear parking fails, the vehicle needs to be parked to provide a safe parking guarantee. It should be noted that after the vehicle controller 3 judges the P-range parking function according to the wheel speed signal, the P-range signal and the P-range parking feedback signal, it will calculate the required torque according to data such as wheel speed and slope, and calculate the torque The signal is sent to the motor controller 4, so that the motor controller 4 provides accurate torque parameters to the power motor 5, so as to realize fast and accurate parking.
  • the P-position parking monitoring system also includes a wheel speed sensor 6 configured to collect wheel speed signals and send the wheel speed signals to the vehicle controller 3 .
  • the vehicle is conventionally equipped with four wheel speed sensors 6, all of which are connected to the vehicle controller 3 to provide wheel speed signals.
  • wheel speed sensors 6 When judging the wheel speed, if any wheel speed is not 0, it is considered that the P gear parking is invalid. , it is necessary to send a vehicle parking signal to park the vehicle.
  • the vehicle controller 3 judges the wheel speed based on the real-time received wheel speed signal, and determines that the P gear parking is invalid based on the judgment result that the wheel speed is not zero. .
  • the P-gear parking monitoring system provided by this application can monitor or detect the function of the P-gear parking process in real time, and effectively intervene through the vehicle controller 3 to avoid the risk of the vehicle slipping and provide a redundant parking system. function, which can increase the safety performance of the P gear parking function. For the judgment of P gear parking failure, in other embodiments, it can also be based on not receiving the P gear parking feedback signal within a certain period of time after receiving the P gear signal, which can be determined according to the performance of different vehicles. Judgment to ensure that the vehicle can be parked in time when the P gear parking fails.
  • the present application also provides an electric vehicle, including a P-range parking monitoring system. Equipped with a P-position parking monitoring system, after the P-position parking fails, it can also be detected and dealt with in time, and the whole vehicle can be parked to ensure safe parking and avoid the danger of slipping.

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  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Transportation (AREA)
  • Mechanical Engineering (AREA)
  • Control Of Transmission Device (AREA)
  • Electric Propulsion And Braking For Vehicles (AREA)

Abstract

一种P档驻车监控方法、监控系统和电动汽车，P档驻车监控方法包括：通过整车控制器（3）采集轮速信号、P档信号和P档驻车反馈信号，并根据轮速信号、P档信号和P档驻车反馈信号判断P档驻车是否正常，基于P档驻车失效的判断结果，进行整车驻车。

Description

P档驻车监控方法、监控系统和电动汽车
本申请要求在2021年7月20日提交中国专利局、申请号为202110817150.1的中国专利申请的优先权，该申请的全部内容通过引用结合在本申请中。
技术领域
本申请涉及纯电动汽车驻车技术领域，例如涉及一种P档驻车监控方法、监控系统和电动汽车。
背景技术
目前，纯电动汽车在档位配置上普遍配置P档，并具有单独的驻车系统，或者有驻车控制器控制锁止机构或者由EPB(电子驻车制动系统)实现驻车功能。在驾驶过程中，如果P档驻车失效，如EPB或EPARK(电子制动)系统失效，则存在发生溜车危险，相关技术中的驻车控制方法还无法提供及时有效的驻车措施。
发明内容
本申请提供一种P档驻车监控方法、监控系统和电动汽车，以避免P档驻车失效后驻车不安全的情况。
本申请采用以下技术方案：
一种P档驻车监控方法，包括：
整车控制器采集轮速信号、P档信号和P档驻车反馈信号，并根据所述轮速信号、所述P档信号和所述P档驻车反馈信号判断P档驻车是否正常，基于所述P档驻车失效的判断结果，进行整车驻车。
本申请还提供一种P档驻车监控系统，用于实现所述P档驻车监控方法，所述P档驻车监控系统包括：
档位控制器，设置为采集驾驶员的P档驻车需求并发送P档信号；
驻车控制器，设置为接收所述P档信号并进行P档驻车，同时发送P档驻车反馈信号；
整车控制器，设置为接收轮速信号、所述P档信号和所述P档驻车反馈信号，并根据所述轮速信号、所述P档信号和所述P档驻车反馈信号判断P档驻车是否正常，基于P档驻车失效的判断结果，进行整车驻车。
本申请还提供一种电动汽车，包括所述P档驻车监控系统。
附图说明
图1是本申请的一种P档驻车监控方法的流程图；
图2是本申请的一种P档驻车监控系统的结构示意图。
具体实施方式
下面结合附图和实施例对本申请作进一步的详细说明。可以理解的是，此处所描述的具体实施例仅仅用于解释本申请，而非对本申请的限定。另外还需要说明的是，为了便于描述，附图中仅示出了与本申请相关的部分而非全部结构。
在本申请的描述中，除非另有明确的规定和限定，术语“相连”、“连接”、“固定”应做广义理解，例如，可以是固定连接，也可以是可拆卸连接，或成一体；可以是机械连接，也可以是电连接；可以是直接相连，也可以通过中间媒介间接相连，可以是两个元件内部的连通或两个元件的相互作用关系。对于本领域的普通技术人员而言，可以视具体情况理解上述术语在本申请中的具体含义。
在本申请中，除非另有明确的规定和限定，第一特征在第二特征之“上”或之“下”可以包括第一和第二特征直接接触，也可以包括第一和第二特征不是直接接触而是通过它们之间的另外的特征接触。而且，第一特征在第二特征“之上”、“上方”和“上面”包括第一特征在第二特征正上方和斜上方，或仅仅表示第一特征水平高度高于第二特征。第一特征在第二特征“之下”、“下方”和“下面”包括第一特征在第二特征正下方和斜下方，或仅仅表示第一特征水平高度小于第二特征。
在本实施例的描述中，术语“上”、“下”、“左”、“右”等方位或位置关系为基于附图所示的方位或位置关系，仅是为了便于描述和简化操作，而不是指示或暗示所指的装置或元件必须具有特定的方位、以特定的方位构造和操作，因此不能理解为对本申请的限制。此外，术语“第一”、“第二”仅仅用于在描述上加以区分，并没有特殊的含义。术语“多个”应该理解为两个以上。
下面结合图1和图2，对本申请提供的一种P档驻车监控方法、监控系统和电动汽车进行详细说明。
本申请实施例首先提供一种P档驻车监控方法，如图1所示流程，所述P档驻车监控方法，整车控制器采集轮速信号、P档信号和P档驻车反馈信号，并根据轮速信号、P档信号和P档驻车反馈信号判断P档驻车是否正常，基于P档驻车失效的判断结果，进行整车驻车。
本申请实施例的一种P档驻车监控方法，通过实时采集轮速信号、P档信号和P档驻车反馈信号，可以监控P档驻车状态，当检测到P档信号和P档驻车 反馈信号，则需要通过轮速进一步判断P档驻车是否有效，以确保安全驻车，如果P档驻车是有效的，可以实现安全驻车，如果P档驻车失效，此时可以及时实施整车驻车，避免溜车危害。需要说明的是，本实施例中，P档驻车是否整车以轮速信号、P档信号和P档驻车反馈信号进行综合判断，P档信号反映了驾驶员的P档驻车需求，P档驻车反馈信号反映了进行P档驻车的操作，而轮速信号则反映了P档驻车后轮速情况，进而可以给出P档驻车是否正常的判断。通过本申请提供的P档驻车监控方法，可以在驻车过程中，及时发现和处理P档失效情况，通过整车驻车来确保驻车安全，避免溜坡等危险发生。
例如，当整车控制器3接收到P档信号和P档驻车反馈信号后，基于实时接收的轮速信号对轮速进行判断，基于轮速不为零的判断结果，确定P档驻车失效。
本申请实施例提供的P档监控方法，通过轮速信号、P档信号和P档驻车反馈信号来判断P档驻车是否正常，例如，如果整车控制器3在接收到P档信号和P档驻车反馈信号后，确定轮速为0，则认为P档驻车是有效的，可以实现安全驻车，如果轮速不为0，则认为P档驻车失效，此时可及时实施整车驻车，避免溜车危害。需要说明的是，本实施例中以轮速是否为0作为判断P档驻车是否有效的判断依据，在其他的实施例中，根据实际情况，也可以将实时采集的轮速是否满足一定的速度区间的持续时间来判断是否驻车有效。在整车驻车后，可以继续采集轮速信号并对轮速进行判断，基于轮速仍不为0或在指定的速度区间内持续时间超过阈值的判断结果，向驾驶员发送驻车失效警报，避免造成溜车或驻车不足造成危险事故。
例如，整车驻车通过整车控制器3发送整车驻车信号给电机控制器4，电机控制器4通过动力电机5进行整车驻车。
如图2所示，整车驻车是一种独立于P档驻车的驻车方法，通过电机控制器4控制动力电机5的扭矩输出，实现对车轮的制动驻车，可以理解，根据对P档驻车是否正常的判断，当轮速为0时认为驻车有效，因此，本实施例中，整车控制器3向电机控制器4发送的整车驻车信号为轮速等于零的扭矩信号，电机控制器4按照相应的扭矩信号控制动力电机5工作，实现制动驻车。
本申请实施例还提供一种P档驻车监控系统，用于实现P档驻车监控方法，如图2所示，P档驻车监控系统包括档位控制器1、驻车控制器2和整车控制器3，其中，档位控制器1设置为采集驾驶员的P档驻车需求并发送P档信号；驻车控制器2设置为接收P档信号并进行P档驻车，同时发送P档驻车反馈信号；整车控制器3设置为接收轮速信号、P档信号和P档驻车反馈信号，并根据轮速信号、P档信号和P档驻车反馈信号判断P档驻车是否正常，基于P档驻车失效的判断结果，进行整车驻车。
本申请实施例的一种P档驻车监控系统，在驻车过程中，通过整车控制器3连接档位控制器1和驻车控制器2，采集轮速信号、P档信号和P档驻车反馈信号，可以实时监控P档驻车功能，当发生P档失效后，无论是因为驻车系统的锁止机构或是控制系统失效，都可以发现并及时进行整车驻车，从而避免单纯依靠P档驻车存在的溜车危害。
例如，P档驻车监控系统还包括电机控制器4，电机控制器4设置为接收整车控制器发送的整车驻车信号，并通过动力电机5进行整车驻车。
如图2所示，档位控制器1、驻车控制器2和电机控制器4均连接整车控制器3，便于整车控制器3接收P档信号和P档驻车反馈信号，以及发送整车驻车信号，电机控制器4根据整车驻车信号控制动力电机5工作，以便实现对车轮的制动驻车，在P档驻车失效的情况下实现安全驻车，避免溜车事故发生。
例如，整车驻车信号为轮速等于零的扭矩信号。
可以理解，本申请实施例中以轮速为零作为判断P档驻车是否有效的判断标准，在收到P档信号和P档驻车反馈信号后，如果轮速仍不为零，认为P档驻车失效，需要整车驻车提供安全驻车保证。需要说明的是，整车控制器3根据轮速信号、P档信号和P档驻车反馈信号对P档驻车功能进行判断后，会根据轮速和坡度等数据计算需求扭矩，并将扭矩信号发送给电机控制器4，便于电机控制器4提供准确的扭矩参数给动力电机5，实现快速准确的驻车。
例如，P档驻车监控系统还包括轮速传感器6，设置为采集轮速信号并将轮速信号发送给整车控制器3。
如图2所示，车辆常规设置四个轮速传感器6，均连接整车控制器3以提供轮速信号，在进行轮速判断时，任何一个轮速不为0就认为P档驻车失效，需要发送整车驻车信号进行整车驻车。
例如，整车控制器3接收到P档信号和P档驻车反馈信号后，基于实时接收轮速信号对轮速进行判断，，基于轮速不为零的判断结果，确定P档驻车失效。
本申请提供的P档驻车监控系统可以实时监控或检测P档驻车过程中的功能，并通过整车控制器3进行有效干预，避免整车的溜车风险，提供一种冗余驻车功能，可以增加P档驻车功能的安全性能。对于P档驻车失效的判断，在其他实施例中，也可以根据收到P档信号后，在一定时间内未收到P档驻车反馈信号作为判断依据，具体可以根据不同车辆的性能进行判断，确保在P档驻车失效时可以及时进行整车驻车。
本申请还提供一种电动汽车，包括P档驻车监控系统。通过配备P档驻车监控系统，在P档驻车失效后，也可以及时发现并处理，提供整车驻车以确保安全驻车，避免溜车危害。

Claims (10)

  1. 一种P档驻车监控方法，包括：
    整车控制器采集轮速信号、P档信号和P档驻车反馈信号，并根据所述轮速信号、所述P档信号和所述P档驻车反馈信号判断P档驻车是否正常，基于所述P档驻车失效的判断结果，进行整车驻车。
  2. 根据权利要求1所述的方法，还包括：
    所述整车控制器接收到所述P档信号和所述P档驻车反馈信号后，基于实时接收的所述轮速信号对轮速进行判断，基于所述轮速不为零的判断结果，确定P档驻车失效。
  3. 根据权利要求2所述的方法，其中，所述进行整车驻车，包括：
    通过所述整车控制器发送整车驻车信号给电机控制器，所述电机控制器通过动力电机进行整车驻车。
  4. 根据权利要求3所述的方法，其中，所述整车驻车信号为轮速等于零的扭矩信号，所述动力电机根据所述扭矩信号进行整车驻车。
  5. 一种P档驻车监控系统，用于实现如权利要求1-4任意一项所述的P档驻车监控方法，所述P档驻车监控系统包括：
    档位控制器，设置为采集驾驶员的P档驻车需求并发送P档信号；
    驻车控制器，设置为接收所述P档信号并进行P档驻车，同时发送P档驻车反馈信号；
    整车控制器，设置为接收轮速信号、所述P档信号和所述P档驻车反馈信号，并根据所述轮速信号、所述P档信号和所述P档驻车反馈信号判断P档驻车是否正常，基于P档驻车失效的判断结果，进行整车驻车。
  6. 根据权利要求5所述的系统，还包括电机控制器，所述电机控制器设置为接收所述整车控制器发送的整车驻车信号，并通过动力电机进行整车驻车。
  7. 根据权利要求6所述的系统，其中，所述整车驻车信号为轮速等于零的扭矩信号。
  8. 根据权利要求5所述的系统，还包括轮速传感器，设置为采集所述轮速信号并将所述轮速信号发送给所述整车控制器。
  9. 根据权利要求5所述的系统，其中，所述整车控制器，设置为接收到所述P档信号和所述P档驻车反馈信号后，基于实时接收的所述轮速信号对轮速进行判断，基于所述轮速不为零的判断结果，确定P档驻车失效。
  10. 一种电动汽车，包括权利要求5-9任意一项所述P档驻车监控系统。
PCT/CN2022/105446 2021-07-20 2022-07-13 P档驻车监控方法、监控系统和电动汽车 WO2023001038A1 (zh)

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