CN101364111B - Fault detecting and processing method for hybrid vehicle - Google Patents

Fault detecting and processing method for hybrid vehicle Download PDF

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Publication number
CN101364111B
CN101364111B CN 200710075553 CN200710075553A CN101364111B CN 101364111 B CN101364111 B CN 101364111B CN 200710075553 CN200710075553 CN 200710075553 CN 200710075553 A CN200710075553 A CN 200710075553A CN 101364111 B CN101364111 B CN 101364111B
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fault
system
control unit
hybrid
failure
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CN101364111A (en
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邹海斌
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奇瑞汽车股份有限公司
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Abstract

The invention discloses a fault detecting and handling method for a hybrid vehicle and a fault detecting and handling system using the method. The technical proposal is as follows: the method adopts the intelligent control modules of the hybrid vehicle, wherein the intelligent control modules include a hybrid power control unit, an electrical control unit, a battery management system and an engine management system; the fault handling system of the hybrid power control unit is adopted as the fault handling decision center, and the fault handling units of the electrical control unit, the battery management system and the engine management system are adopted as the sub-systems; the decision center and the subsystems cooperate to detect and handle the fault. The system and the method are applicable in the control system of the vehicle (particularly hybrid vehicle) to enhance the fault detection and handling capability.

Description

一种混合动力汽车故障检测及处理方法 A hybrid electric vehicle fault detection and treatment

技术领域 FIELD

[0001] 本发明涉及故障检测及处理的方法,尤其是涉及混合动力汽车中针对汽车的故障进行检测,确定故障性质和位置以及对故障进行相应处理的方法。 [0001] The present invention relates to a method of fault detection and treatment, particularly to a method for detecting a failure in the automotive hybrid vehicles, determine a fault position and the nature of the fault and the corresponding processing.

背景技术 Background technique

[0002] 混合动力汽车作为新一代的清洁节能型汽车既提高了车辆的驾驶性能,充分发挥了内燃机汽车和电动汽车的优点,是当今最具实际开发意义的低排放和低油耗汽车。 [0002] As a new generation of hybrid vehicles clean fuel-efficient vehicles not only improves the drivability of the vehicle, give full play to the advantages of the internal combustion engine and electric cars, it is today the most practical significance of the development of low emission and fuel efficient vehicles. 但是混合动力汽车控制比较复杂,与普通车相比需要考虑特殊的安全控制问题,主要有以下几点:①在动力系统接合时启动发动机;②发动机意外停机或失速;③发动机意外启动•'④发动机无法重新启动;⑤意外的驱动扭矩增大;⑥意外的驱动扭矩减小;⑦意外的制动扭矩减小。 But the hybrid vehicle control is more complex, with ordinary cars need to consider special security control problems compared to, the following main points: ① start the engine when the power system is engaged; ② engine stall or unplanned downtime; ③ engine accidental activation • '④ the engine can not be restarted; ⑤ unexpected increase driving torque; ⑥ unexpected driving torque reduction; ⑦ unexpected braking torque reduction. 因此混合动力系统的开发的关键技术除了整车控制策略、发动机控制、电机及电池控制之外,关键的技术还在于对各系统故障的监测及做出相应的处理措施来保护各个系统。 Therefore, the key technology to develop hybrid vehicle control system in addition to the strategy, the engine control, motor control and battery, further characterized by monitoring key techniques for each system failure and make the appropriate treatment measures to protect each system. 现有技术中还没有对汽车各系统故障的监测及处理的系统,只有对汽车中某些局部故障进行检测并报警,由人工干预完成故障处理的系统,专利号为ZL022^885. 6的中国实用新型专利就公布了这样一种汽车用综合报警控制器,利用一个综合报警器控制器控制汽车尾灯自动检测的灯丝自动检测电路、安全带提醒电路、车门未闭和灯光未闭报警电路。 The prior art has not been treated and the monitoring system of each vehicle system failure, only on some local car alarm and fault detection, manual intervention is completed by the processing system failure, Patent No. ZL022 ^ 885. 6 in China utility Model Patent publication such a car on an integrated alarm controller using an integrated automatic alarm controller controls the filament detection circuit taillights automatic detection, seat belt reminders circuit, the door is not closed and lights the alarm circuit is not closed. 使用该专利可以提高综合报警的性能及实用性,大减少汽车因此而导致的事故,但是该专利不能解决对汽车各系统故障检测和处理。 Using this patent can improve the performance and practicality of the integrated alarm, thereby greatly reduced car accidents caused by, this patent does not solve the fault detection system of each car and process.

发明内容 SUMMARY

[0003] 本发明要解决的技术问题在于,为了弥补现有汽车综合报警控制器的不足,而提供一种检测到汽车特别是混合动力汽车各系统故障的方法和提出一种实现该方法的系统。 [0003] The present invention is to solve the technical problem that in order to make up conventional integrated car alarm control, to provide a method for detecting vehicles, especially a hybrid vehicle of each system failure and a system for realizing the proposed method .

[0004] 本发明为解决上述技术问题而采用如下的技术方案:一种混合动力汽车故障检测及处理的方法,其特征在于:该方法利用混合动力汽车的各智能控制模块:混合动力控制单元、电机控制单元、电池管理系统、发动机管理系统,以混合动力控制单元的故障处理系统为故障处理决策中心并且该单元通过控制冷却泵、风扇直接对混合动力电机、逆变器及DC-DC进行热管理,以电机控制单元、电池管理系统、发动机管理系统中的故障处理单元为子系统,按下列步骤进行汽车故障检测和处理: [0004] The present invention solves the above technical problems, the following technical solutions: A hybrid vehicle for fault detection and treatment, characterized in that: the method uses a hybrid vehicle of each intelligent control module: hybrid control unit, motor control unit, a battery management system, the engine management system to a fault management system for the hybrid control unit and the fault handling unit decision center, directly to the hybrid fan motor, and a DC-DC inverter by controlling the cooling heat pump management, motor control unit, a battery management system, the engine management system failure in the processing unit subsystems, and fault detection process for automobiles according to the following steps:

[0005] a.各子系统利用本身拥有的传感器对本系统内的各单元状态进行监测,并判断其是否处于正常工作状态,若处于正常工作状态,则继续监测,若发现有单元工作状态在非正常情况下即进入步骤从b开始的故障处理模式; [0005] a. Each subsystem uses the sensor itself has the respective cell states within the system to monitor, and determine whether it is in normal operating state, if the normal operation state, then continues to monitor, if found to have unit operational state in a non- normally enters into failure mode step process starting from b;

[0006] b.子系统对故障的情况进行判别,若为本系统可自行恢复的故障,则启动故障恢复系统恢复有故障的单元,同时将故障情况上报混合动力控制单元,若为本系统不能自行恢复的故障,则将故障内容上报混合动力控制单元; [0006] b. Subsystems case of a failure to discriminate, if the system fault-based self-healing, the boot failure recovery system faulty recovery unit, while a fault report the hybrid control means, if the present system is not self-healing failure, then the fault information report hybrid control unit;

[0007] c.混合动力控制单元接收子系统的故障报告,对该故障报告进行分析,并根据具体情况进行处理。 [0007] c. The hybrid control subsystem failure report receiving unit, the fault report is analyzed, and processed according to the specific circumstances. [0008] 更进一步的,步骤c中混合动力控制单元对故障报告进行分析,并根据具体情况进行处理包括以下步骤: [0008] Further, the step c hybrid control unit reports fault analysis, and process steps depending on the circumstances comprising:

[0009] Cl.若故障是所述上报故障的系统自己恢复的,则记入混合动力控制单元系统日志; . [0009] Cl when the fault is a fault report their recovery system, the hybrid control unit entered the system log;

[0010] C2.若故障是可由其它子系统恢复的,则混合动力控制单元协调其它子系统或者利用本身控制的资源恢复故障,并记入混合动力控制单元系统日志; . [0010] C2 if the failure is restored by the other subsystems, the hybrid control means to coordinate other subsystems or resources fault recovery control itself, and recorded in the system log hybrid control unit;

[0011] C3.若故障为不可自行恢复的,则通知驾驶员,并记入混合动力控制单元系统日 [0011] C3. If the fault is a non-self-healing, the driver is notified and recorded in the hybrid system control unit Day

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[0012] 进一步的,子系统向混合动力控制单元上报告故障报告是通过发送数据包实现的,该数据包中的数据至少包括故障标示码。 Report in [0012] Further, the control subsystem to the hybrid unit by sending the fault report is implemented in a packet, the data packet including at least failure identification code. 所述故障标示码包括6位数字,第一位为该子系统代码,第二位故障起因代码,第三位到第五位为故障代码,第六位为所述故障的等级代码。 The failure identification code comprises six digits, the first sub-codes for a second bit failures cause codes, the third to fifth bit fault code, said sixth fault class code.

[0013] 另外,本发明还设计了一种实现该方法的系统,其技术方案为:一种混合动力汽车故障检测及处理系统,其特征在于,包括混合动力控制单元、电机控制单元、电池管理系统、 发动机管理系统的故障检测和处理子单元,电机控制单元、电池管理系统、发动机管理系统的故障检测和处理子单元通过CAN总线与混合动力控制单元进行通信,混合动力控制单元通过控制冷却泵、风扇直接对混合动力电机、逆变器及DC—DC进行热管理。 [0013] Further, the present invention also contemplates a system for implementing the method, which is a technical solution: a hybrid electric vehicle fault detection and processing system, comprising a hybrid control unit, the motor control unit, a battery management fault detection and processing sub-unit system, fault detection and processing sub-unit of the engine management system, the motor control unit, a battery management system, the engine management system to communicate, the hybrid control unit controlling the cooling pump via CAN bus and the hybrid control unit , direct hybrid fan motor, inverter, and DC-DC thermal management.

[0014] 本发明的积极效果是在现有汽车特别是混合动力汽车的控制系统中增加故障检测和处理功能的方法和利用该方法的系统,对本方法进一步的可以对检测到的故障进行分类,并记载在系统的存储系统中供事后进行处理和分析。 [0014] The positive effect of the present invention is to increase the fault detection and processing functions in the control system of the existing vehicles, especially the hybrid vehicle in a method and use of the process system, the method further may classify the detected fault, and it is described for post-processing and analysis system in the storage system.

[0015] 下面结合实施例和附图来进一步说明本发明。 [0015] The following Examples and accompanying drawings further illustrate the invention.

附图说明 BRIEF DESCRIPTION

[0016] 图1为混合动力汽车故障检测及处理系统框图。 [0016] FIG. 1 is a electric vehicle fault detection system block diagram and the mixing process.

[0017] 图2为故障标示代码。 [0017] FIG. 2 is a fault code is indicated.

[0018] 图3为电池管理系统中高压电池故障监测及处理流程图。 [0018] FIG. 3 is a flowchart showing the failure monitoring processing high-voltage battery and a battery management system.

[0019] 图4为混合动力控制单元中高压电池故障监测及处理流程图。 [0019] FIG. 4 is a high-voltage battery in a hybrid fault monitoring and control unit processing flowchart.

[0020] 图中,1.混合动力控制单元,11.冷却系统,12.DC/DC,2.电机控制单元,21.混合动力电机,3.电池管理系统,31.高压电池,4.发动机管理系统,41.发动机系统。 [0020] FIG, 1 hybrid control unit 11 cooling system, 12.DC / DC, 2. The motor control unit 21. The hybrid motor, three battery management system, 31 high-voltage battery 4 engine management system 41 of the engine system.

具体实施方式 Detailed ways

[0021] 如图1所示,一种混合动力汽车故障检测及处理系统,包括混合动力控制单元1、 电机控制单元2、电池管理系统3、发动机管理系统4的故障检测和处理子单元,混合动力控制单元1、电机控制单元2、电池管理系统3、发动机管理系统4的英文简称分别为:HCU、 MCU、BMS、EMS,以下称HCU1、MCU2、BMS3、EMS4, MCU2、BMS3、EMS4 的故障检测禾口处理子单元通过CAN总线与HCUl进行通信,HCUl通过控制冷却泵、风扇等冷却系统11直接对混合动力电机21 (又称ISG21)、逆变器及DC/DC12进行热管理。 [0021] As shown, a hybrid electric vehicle fault detection and processing system 1, comprising a hybrid control unit 1, the motor control unit 2, the battery management system 3, the engine management system fault detection and processing sub-unit 4, mixed a power control unit 1, the motor control unit 2, the battery management system 3, the engine management system English abbreviation 4 respectively: HCU, MCU, BMS, EMS, hereinafter HCU1, MCU2, BMS3, EMS4, MCU2, fault BMS3, EMS4 of Wo mouth detection processing sub-unit and communicate via the CAN bus HCUl, HCUl directly to the hybrid motor 21 (also known as ISG21), inverters and DC / DC12 thermal management by controlling the cooling pumps, fans and other cooling system 11. MCU2对ISG21的各单元进行控制和检测,BMS3对高压电池31进行控制的同时,还利用一些传感器等对电池的健康状态进行检测,EMS4对发动机系统41进行控制的同时还要检测发动机系统的各部份工作状态是否正常,MCU2、BMS3、EMS4与HCUl通过汽车的CAN总线交换数据。 ISG21 MCU2 each unit is controlled and detected, while the high voltage battery 31 BMS3 controlling, also use a number of sensors for detecting the state of health of the battery, but also each of the detection system of the engine for controlling the engine EMS4 system 41 are most of the work is normal, MCU2, BMS3, EMS4 and HCUl CAN bus data exchange through the car.

[0022] 图1所示的混合动力汽车故障检测及处理系统主要工作流程以BMS与HCU对故障检测和处理为例加以说明,EMS和MCU与HCU对故障检测和处理方式相似。 The main workflow hybrid vehicle fault detection and processing system shown in FIG. 1 [0022] In the BMS HCU and fault detection process will be described as an example, EMS and the HCU MCU failure detection and processing similar manner.

[0023] BMS与HCU对故障检测和处理按下列步骤工作的: [0023] BMS HCU and fault detection and processing of the following steps:

[0024] BMS利用本身拥有的传感器对高压电池内的各单元状态进行监测,主要是高压电池的电流、电压、温度、电池容量等,判断其是否处于正常工作状态,若处于正常工作状态, 则继续监测,若发现有单元工作状态在非正常情况下即进入故障处理模式; [0024] BMS the sensor itself has a high voltage state of each cell pool monitoring, mainly high-voltage battery current, voltage, temperature, battery capacity, it is determined whether it is in normal working condition, if in a normal working state, continue to monitor, if found to have unit operating state enters into failure mode in the process abnormal condition;

[0025] BMS进入故障处理模式、BMS的故障处理单元故障的情况进行判别,若为本系统可自行恢复的故障,则启动故障恢复系统恢复有故障的单元,同时将故障情况上报混合动力控制单元,若为本系统不能自行恢复的故障,则将故障内容上报混合动力控制单元。 [0025] BMS enters the fault processing mode, the processing unit where the fault to discriminate the BMS failure, if the system fault-based self-healing, the boot failure recovery system faulty recovery unit, while a fault report the hybrid control unit If the present system is not self-healing failure, then the fault information report hybrid control unit. 在BMS 内部按下面的程序完成故障检测和处理。 BMS internal fault detection and processing is completed by the following procedure.

[0026] 对于BMS,高压电池工作模式包括:不可用状态、休眠状态、运行但空闲状态、连接断开状态、强制断开、预充电状态、警示状态及连接状态。 [0026] For the BMS, high-voltage battery operation comprising: unavailable state, sleep state, but run idle, disconnected state, forcibly disconnected, the pre-charge state, the alert state and the connected state. 各种工作模式之间的工作关系见如图3。 Working relationship between the various operating modes are shown in Figure 3.

[0027] 系统复位后高压电池工作模式进入不可用状态,在不可用状态经过系统充分准备就可以进入运行但空闲状态。 [0027] After a reset voltage battery operation mode into an unusable state in the unavailable state through the system can be fully prepared to enter the running but idle.

[0028] 在运行但空闲状态时,插入汽车钥匙为TRUE,当休眠禁止为FALSE,就进入休眠状态,在休眠状态,当插入汽车钥匙为TRUE则进入到不可用状态;当休眠禁止为TURE时,进入连接断开状态。 [0028] In operation, but the idle state, into the car key is TRUE, when the sleep prohibition is FALSE, enters the sleep state, the sleep state, when the inserted car key is TRUE into an unusable state; when TURE Sleep prohibit into the disconnected state.

[0029] 在连接断开状态时,当插入汽车钥匙为FALSE时又返回运行但空闲状态,当连接指令和允许充电指令均为TURE时则进入到预充电状态。 [0029] When disconnected state, when the car key is inserted into the time and return FALSE but idle running, and when a connection command instructions are TURE allowing charging proceeds to pre-charge state.

[0030] 在预充电状态时,收到预充电完成命令则进入连接状态;当插入汽车钥匙为FALSE或者预充电失败,则进入警示状态。 [0030] In the precharge state, the precharge completion command is received into a connected state; when the car key is inserted or pre-charging failure is FALSE, the process proceeds to a warning state.

[0031] 在警示状态,当出现有严重故障则进入强制断开状态,若连接失败则进入到连接断开状态,若插入汽车钥匙、连接指令、超过预警时间者为TURE,而预充电完成,系统故障为FALSE,则进入连接状态 [0031] In the alert state, occurs when severe failure proceeds forcibly disconnected state, if the connection fails to enter the disconnection state, when the car key is inserted, the connection instruction, warning time than those of TURE, precharge is completed, system failure is FALSE, into a connected state

[0032] 在连接状态,系统正常工作,当插入汽车钥匙为FALSE和出现系统故障时返回警示状态;当连接指令为FALSE时进入连接断开状态。 [0032] In the connected state, the system is working properly, return alarm status when the car key is inserted into a system failure and to FALSE; enters the disconnected state when the connection instruction to FALSE.

[0033] 在强制断开状态,当连接指令为FALSE时进入连接断开状态;若CAN信息丢失为TURE,插入汽车钥匙为FALSE和预充电状态为INACTIVE时进入运行但空闲状态。 [0033] In the forced OFF state, into the disconnected state when the connection instruction is FALSE; enters an idle state, but if the operation information is lost as CAN TURE, car key is inserted into the precharged state is FALSE and INACTIVE.

[0034] HCU接收BMS的故障报告,对该故障报告进行分析,并根据具体情况按下列方式进行处理。 [0034] HCU fault report receiving the BMS, the fault report is analyzed, and processed in the following manner depending on the circumstances.

[0035] 若故障是所述上报故障的系统自己恢复的,则记入混合动力控制单元系统日志。 [0035] If a fault is reported by the fault recovery system of its own, the hybrid control unit entered the system log.

[0036] 若故障是可由其它子系统恢复的,则混合动力控制单元协调其它子系统或者利用本身控制的资源恢复故障,并记入混合动力控制单元系统日志。 [0036] If the failure is restored by the other subsystems, the hybrid control means to coordinate other subsystems or resources fault recovery control itself, and recorded in the system log hybrid control unit.

[0037] 若故障为不可自行恢复的,则通知驾驶员,并记入混合动力控制单元系统日志。 [0037] If the fault is a non-self-healing, the driver is notified, and recorded in the system log hybrid control unit.

[0038] 对HCU高压电池具有六个故障处理模式,包括正常模式、欠充电模式、过充电模式、故障模式、失效模式及连接断开模式如图4所示。 [0038] troubleshooting mode having six HCU high voltage battery, including a normal mode, under the charging mode, the overcharge mode, failure mode, the failure mode and disconnected mode as shown in FIG.

[0039] 正常模式:是在没有发生任何故障时的运行模式;[0040] 过充电模式:这个模式是HCU软件故障模式,指高压电池SOC还没有高到让BMS切断电池的模式; [0039] Normal Mode: When no failure is occurring in the operation mode; [0040] Overcharge mode: This mode is HCU software failure mode refers to a high voltage battery SOC has not so high as to cut off the battery BMS mode;

[0041 ] 欠充电模式:与过充电模式相似,指高压电池SOC还没有低到让BMS切断电池的模式; [0041] Less charging mode: similar to the over-charging mode, high voltage battery SOC refers to allow BMS has not cut off the battery low mode;

[0042] 故障模式:非CAN通信故障模式,并且BMS没有切断高压电池; [0042] Failure Mode: Non CAN communication failure mode, high voltage battery is not cut off and BMS;

[0043] 失效模式,指HCU与BMS之间失去CAN通信,或者BMS软件故障,进入无效工作模式; [0043] Failure mode refers to the loss of CAN communication or software failure between the BMS and BMS HCU, into an inactive operating mode;

[0044] 连接断开模式:指由于故障导致BMS将电池从传动链上断开。 [0044] disconnect mode: that due to battery failure resulting BMS disconnected from the drive chain.

[0045] BMS与HCU是通过CAN通信的,BMS将故障内容按图2所示编号,第一位是表示BMS系统,这里定为1,例如,这里故障原因可能是由于长时间运行,天气比较炎热,至使电池温度太高,定为5,故障代码为233,是一个可恢复性的故障,严重程度为3,则故障编码为152334。 [0045] BMS HCU by the CAN communication, the content of the fault by BMS numbers shown in FIG. 2, the first bit is a BMS system, where as an example, where the failure may be due to long-running, meteorological hot to the battery temperature is too high, set to 5, the fault code 233, is a recoverable failure, the severity of 3, then the fault is coded as 152334. HCU接收到该编码后,通过控制制冷系统给电池降温,就可以解决了。 After the HCU has received the encoded, by controlling the cooling system to cool the battery, it can be solved.

Claims (3)

1. 一种混合动力汽车故障检测及处理方法,该方法利用混合动力汽车的各智能控制模块:混合动力控制单元、电机控制单元、电池管理系统、发动机管理系统,以混合动力控制单元的故障处理系统为故障处理决策中心并且该单元通过控制冷却泵、风扇直接对混合动力电机、逆变器及DC-DC进行热管理,以电机控制单元、电池管理系统、发动机管理系统中的故障处理单元为子系统,按下列步骤进行汽车故障检测和处理:a.各子系统利用本身拥有的传感器对本系统内的各单元状态进行监测,并判断其是否处于正常工作状态,若处于正常工作状态,则继续监测,若发现有单元工作状态在非正常情况下即进入步骤从b开始的故障处理模式;b.子系统对故障的情况进行判别,若为本系统可自行恢复的故障,则启动故障恢复系统恢复有故障的单元,同时将故障情况上 An intelligent control module for each hybrid vehicle fault detection and processing method, the method utilizes a hybrid vehicle: hybrid control unit, the motor control unit, a battery management system, the engine management system to control the failure processing unit in the hybrid Troubleshooting system and the central decision-making unit, the fan directly to the hybrid motor, the inverter and the DC-DC thermal management by controlling the cooling pump to the motor control unit, a battery management system, the engine management system fault handling unit subsystem, a vehicle fault detection and processing according to the following steps:. a respective subsystem uses the sensor itself has a state of each unit within the system to monitor, and determine whether it is in normal operating state, if the normal operation state is continued monitoring, if found to have units operating state enters into failure mode processing starts from step b in the abnormal condition;. b subsystem case of a failure to discriminate, if the system fault-based self-healing, the boot failure recovery system faulty recovery unit, while the fault 报混合动力控制单元,若为本系统不能自行恢复的故障,则将故障内容上报混合动力控制单元;c.混合动力控制单元接收子系统的故障报告,对该故障报告进行分析,并根据如下具体情况进行处理:Cl.若故障是所述上报故障的系统自己恢复的,则记入混合动力控制单元系统日志;C2.若故障是可由其它子系统恢复的,则混合动力控制单元协调其它子系统或者利用本身控制的资源恢复故障,并记入混合动力控制单元系统日志;C3.若故障为不可自行恢复的,则通知驾驶员,并记入混合动力控制单元系统日志。 Reported the hybrid control means, if the present system is not self-healing failure, then the fault information report hybrid control unit;. C hybrid control subsystem failure report receiving unit, the fault report is analyzed, and according to the following specific where processing:.. Cl if the fault is reported by the fault recovery system of their own, are credited to the hybrid control unit system log; C2 if the fault is a coordination of the other subsystems by other subsystems recovery, hybrid control unit own resources or fault recovery control, and recorded in the system log hybrid control unit;. if the fault is not a C3 self-healing, the driver is notified, and recorded in the system log hybrid control unit.
2.根据权利要求1所述的混合动力汽车故障检测及处理方法,其特征在于,所述子系统向混合动力控制单元是通过CAN总线进行通信的,子系统向混合动力控制单元上报故障报告是通过发送数据包实现的,该数据包中的数据至少包括故障标示码。 The hybrid vehicle and a fault detection processing method according to claim 1, wherein said subsystem is the subsystem fault reporting reports to the hybrid control unit communication to the hybrid control unit via a CAN bus implemented by sending data packets, the data packet including at least failure identification code.
3.根据权利要求2所述的混合动力汽车故障检测及处理方法,其特征在于,所述故障标示码包括6位数字,第一位为该子系统代码,第二位故障起因代码,第三位到第五位为故障代码,第六位为所述故障的等级代码。 The hybrid vehicle and a fault detection processing method according to claim 2, wherein said fault comprises a six-digit identification code, for a first sub-codes, the second cause of fault codes, the third to the fifth place of the fault code, said sixth fault class code.
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