CN1769665B - Driving device and control method thereof, and hybrid electric vehicle - Google Patents

Abstract

Translated fromChinese

本发明涉及一种驱动装置及其控制方法和混合动力汽车。本发明涉及一种防止起动内燃机之际使用的驱动电路的破损，同时更可靠更迅速地起动内燃机的技术。在驱动起动电机的逆变器的开关元件的温度成为容许温度的上限附近时，通过接通的加热失败信号表明发动机的转动曲轴失败时(步骤S140)，停止起动电机的驱动，等待经过以冷却逆变器的开关元件的温度所需的时间和将发动机的转动曲轴位置返回通常的停止位置所需的时间中较长的时间设定的规定时间(步骤S180)，再次开始发动机的转动曲轴操作。

The invention relates to a driving device, a control method thereof and a hybrid electric vehicle. The present invention relates to a technique for more reliably and quickly starting an internal combustion engine while preventing damage to a drive circuit used when starting an internal combustion engine. When the temperature of the switching element of the inverter that drives the starter motor becomes near the upper limit of the allowable temperature, when the heating failure signal that is turned on indicates that the crankshaft of the engine fails (step S140), the drive of the starter motor is stopped and waits for cooling. The time required for the temperature of the switching element of the inverter and the time required for returning the cranking position of the engine to the normal stop position are set for a predetermined time (step S180), and the cranking operation of the engine is restarted. .

Description

Translated fromChinese

驱动装置及其控制方法和混合动力汽车Driving device and its control method and hybrid electric vehicle

技术领域technical field

本发明涉及一种驱动装置及其控制方法和混合动力汽车，更详细地说，涉及一种可将来自内燃机的动力和来自驱动用电动机的动力向驱动轴输出的驱动装置及其控制方法和装载有如此驱动装置的混合动力汽车。The present invention relates to a driving device and its control method and a hybrid electric vehicle, more specifically, to a driving device capable of outputting power from an internal combustion engine and a driving motor to a drive shaft, its control method and a loading A hybrid car with such a drive.

背景技术Background technique

以往，作为这种驱动装置，提出了一种装载于在停车状态下自动停止发动机而在驾驶员操作行驶时自动起动发动机的汽车上的技术(例如，日本特开昭58-18538号公报等)。在这种装置中，通过起动电(动)机使发动机曲轴转动期间发动机停止时，起动电机的转速要等待到发动机的转速(大致为0)，才使发动机再起动。In the past, as such a driving device, a technology mounted on a car that automatically stops the engine in a parked state and automatically starts the engine when the driver operates the drive has been proposed (for example, Japanese Patent Application Laid-Open No. 58-18538, etc.) . In this device, when the engine stops during the crankshaft rotation of the engine by the starter electric (moving) machine, the rotation speed of the starter motor will wait until the rotation speed (approximately 0) of the engine before the engine is restarted.

发明内容Contents of the invention

在如此驱动装置中，即使起动电机等待到与发动机的转速一致，驱动起动电机的驱动电路因过热成为高温状态时，也会发生再起动发动机时因过热会破损驱动电路的情况。另外，内燃机的曲轴位置没有返回到通常的停止位置时，或发动机的内部压力较高时，存在着发动机的再起动困难、即使起动而发动机也会停止的情况。In such a driving device, even if the starter motor waits until the rotation speed of the engine is the same, if the drive circuit driving the starter motor becomes high temperature due to overheating, the drive circuit may be damaged due to overheating when the engine is restarted. In addition, when the crankshaft position of the internal combustion engine has not returned to the normal stop position, or when the internal pressure of the engine is high, it may be difficult to restart the engine, and the engine may stop even if it is started.

本发明的驱动装置及其控制方法和混合动力汽车的一个目的在于，防止起动内燃机之际使用的驱动电路的破损。本发明的驱动装置及其控制方法和混合动力汽车的另一目的在于，可进一步可靠地起动内燃机。本发明的驱动装置及其控制方法和混合动力汽车的再一个目的在于，可更迅速地起动内燃机。One object of the drive device, its control method, and hybrid vehicle according to the present invention is to prevent damage to a drive circuit used when starting an internal combustion engine. Another object of the drive device, its control method, and the hybrid vehicle of the present invention is to start the internal combustion engine more reliably. Another object of the driving device, its control method, and the hybrid vehicle of the present invention is to start the internal combustion engine more quickly.

本发明的驱动装置及其控制方法和混合动力汽车为了实现上述目的的至少一部分，采用了如下的技术方案。In order to achieve at least part of the above objects, the driving device, its control method and the hybrid vehicle of the present invention adopt the following technical solutions.

本发明的第1种驱动装置为，一种可将来自内燃机的动力和来自驱动用电动机的动力向驱动轴输出的驱动装置，其中，具有：带有可使所述内燃机曲轴转动的起动用电动机和驱动该起动用电动机的驱动电路、可使该内燃机起动的起动装置；为了防止该驱动电路过热，在所述内燃机的起动开始后的规定的定时进行该内燃机的起动的停止指令的停止指令装置；在产生所述内燃机的起动指令时、以起动该内燃机的方式控制所述起动装置，在该内燃机的起动期间、通过所述停止指令装置产生该内燃机的起动停止指令时，以停止该内燃机的起动的方式控制所述起动装置，将从该停止指令起作为充分冷却所述驱动电路以允许再起动的时间来设定的可再起动时间的经过作为再起动的条件之一，以起动该内燃机的方式控制所述起动装置的起动控制装置。The first driving device of the present invention is a driving device capable of outputting power from an internal combustion engine and a driving motor to a drive shaft, wherein: a starter motor that can rotate the crankshaft of the internal combustion engine is provided. and a drive circuit for driving the starter motor, a starter device capable of starting the internal combustion engine; in order to prevent overheating of the drive circuit, a stop command device for giving a stop command to start the internal combustion engine at a predetermined timing after starting the start of the internal combustion engine ; when the starting command of the internal combustion engine is generated, the starting device is controlled to start the internal combustion engine, and during the starting period of the internal combustion engine, when the starting stop command of the internal combustion engine is generated by the stop command device, to stop the internal combustion engine The starting device is controlled in a manner of starting, and the elapse of the restartable time set from the stop command as the time for sufficiently cooling the drive circuit to allow restarting is used as one of the restarting conditions to start the internal combustion engine The starting control means for controlling the starting means in a manner.

在本发明的第1种驱动装置中，在产生内燃机的起动指令时、以起动内燃机的方式控制具有起动用电动机和其驱动电路的起动装置，在该内燃机的起动期间、为了防止驱动电路的过热，在产生内燃机的起动的停止指令时，以停止该内燃机的起动的方式控制起动装置，从该停止指令起，经过作为冷却驱动电路以允许再起动的时间设定的可再起动时间的经过作为再起动的条件之一，以起动内燃机的方式再次控制起动装置。因此，在内燃机的起动和再起动之际，能够防止驱动内燃机的转动曲轴用的起动用电动机的驱动电路因过热受到的破损。结果，能够更可靠地起动内燃机。并且，由于可再起动时间为冷却驱动电路以允许再起动的时间，与等待经过该时间以上的时间再起动相比，能够迅速地起动内燃机。在此，对于“作为再起动的条件之一”意思为，作为再起动的条件考虑有多个必要条件，可再起动时间的经过为包含在该多个必要条件中的一个。In the first driving device of the present invention, when a starting command of the internal combustion engine is generated, the starting device having the electric motor for starting and the driving circuit thereof is controlled to start the internal combustion engine. During the starting of the internal combustion engine, in order to prevent overheating of the driving circuit , when a stop command for starting the internal combustion engine is generated, the starting device is controlled in such a manner as to stop the starting of the internal combustion engine, and from the stop command, the passage of the restartable time set as the time for cooling the drive circuit to allow restart is taken as One of the conditions for restarting is to control the starting device again in a manner to start the internal combustion engine. Therefore, when the internal combustion engine is started and restarted, it is possible to prevent the drive circuit of the starter motor for driving the crankshaft of the internal combustion engine from being damaged due to overheating. As a result, the internal combustion engine can be started more reliably. In addition, since the restartable time is the time for cooling the drive circuit to allow restarting, the internal combustion engine can be started quickly compared to waiting for a restart after this time or more has elapsed. Here, "as one of the restarting conditions" means that a plurality of necessary conditions are considered as the restarting condition, and the elapse of the restartable time is one of the plurality of necessary conditions.

在如此本发明的第1种驱动装置中，所述可再起动时间可设定为冷却所述驱动电路以可再起动的时间和所述内燃机的曲轴位置恢复通常的停止位置所需的时间中较长的时间。如此，由于等待内燃机的曲轴位置恢复到通常的停止位置才再起动内燃机，能够更可靠地起动内燃机。In the first driving device of the present invention, the restartable time can be set as the time required to cool the driving circuit so that it can be restarted and the time required for the crankshaft position of the internal combustion engine to return to the normal stop position. longer time. In this way, since the internal combustion engine is restarted after waiting for the crankshaft position of the internal combustion engine to return to the normal stop position, the internal combustion engine can be started more reliably.

另外，在本发明的第1种驱动装置中，所述可再起动时间可设定为冷却所述驱动电路以可再起动的时间和所述内燃机的内部压力恢复通常的压力所需的时间中较长的时间。如此，由于等待内燃机的内部压力恢复到通常的压力才再起动内燃机，能够更可靠地起动内燃机。In addition, in the first driving device of the present invention, the restartable time may be set as the time required to cool the driving circuit so that the restart is possible and the time required for the internal pressure of the internal combustion engine to return to the normal pressure. longer time. In this way, since the internal combustion engine is restarted after waiting for the internal pressure of the internal combustion engine to return to the normal pressure, the internal combustion engine can be started more reliably.

此外，在本发明的第1种驱动装置中，可具有检测出所述驱动电路的至少一部分的温度的温度检测装置，所述停止指令装置为：将根据由所述温度检测装置检测出的温度的定时作为所述规定的定时，以进行所述内燃机的起动的停止指令的装置。如此，可根据驱动电路的温度进行内燃机的起动的停止。In addition, in the driving device according to the first aspect of the present invention, there may be a temperature detecting device that detects the temperature of at least a part of the driving circuit, and the stop instruction device is configured to set The timing is used as the predetermined timing to perform a start-stop command of the internal combustion engine. In this way, starting and stopping of the internal combustion engine can be performed according to the temperature of the drive circuit.

在根据该驱动电路的温度进行内燃机的起动的停止指令形式的本发明的第1种驱动装置中，所述停止指令装置可以为：将由所述温度检测装置检测出规定温度以上的温度的定时作为所述规定的定时，以进行所述内燃机的起动的停止指令的装置。如此，可将驱动电路抑制在规定温度以上。In the drive device according to the first aspect of the present invention, which is a stop command form for starting the internal combustion engine based on the temperature of the drive circuit, the stop command means may use the timing when the temperature detection means detects a temperature equal to or higher than a predetermined temperature as The predetermined timing is a device for performing a start-stop command of the internal combustion engine. In this way, the temperature of the drive circuit can be suppressed to be higher than a predetermined temperature.

另外，在根据驱动电路的温度进行内燃机的起动的停止指令形式的本发明的第1种驱动装置中，所述停止指令装置可以为：具有所述内燃机的起动指令时，根据由所述温度检测装置检测出的温度设定可转动曲轴时间，将从开始所述内燃机的起动起经过该可转动曲轴时间的定时作为所述规定的定时，以进行所述内燃机的起动的停止指令的装置。如此，由于根据内燃机的起动指令之际的驱动电路的温度，设定转动曲轴的时间，能够防止驱动电路因过热所致的破损。In addition, in the first driving device of the present invention in the form of a stop command for starting the internal combustion engine based on the temperature of the drive circuit, the stop command means may be: when there is a start command for the internal combustion engine, based on the The temperature detected by the device sets the crankable time, and the timing at which the crankable time has elapsed since the starting of the internal combustion engine is set as the predetermined timing to command the start and stop of the internal combustion engine. In this way, since the cranking time is set according to the temperature of the drive circuit at the start command of the internal combustion engine, damage to the drive circuit due to overheating can be prevented.

或者，在本发明的第1种驱动装置中，可具有设定包含有将根据所述驱动装置的驱动状态至少使来自所述内燃机的动力的一部分向所述驱动轴输出的内燃机运转模式和停止该内燃机并只将来自所述电动机的动力向所述驱动轴输出的电动机驱动模式的多个模式中的任意一个模式的模式设定装置。Alternatively, in the driving device according to the first aspect of the present invention, the setting may include an internal combustion engine operation mode that outputs at least a part of the power from the internal combustion engine to the drive shaft according to the driving state of the driving device and stop. A mode setting device for any one of a plurality of motor drive modes in which the internal combustion engine outputs only power from the electric motor to the drive shaft.

本发明的第1种混合动力汽车的特征为，装载有上述任意一种形态的本发明的第1种驱动装置，即，基本上驱动装置为一种可将来自内燃机的动力和来自驱动用电动机的动力向驱动轴输出的驱动装置，其中，具有带有可使所述内燃机曲轴转动的起动用电动机和驱动该起动用电动机的驱动电路、可使该内燃机起动的起动装置；为了防止该驱动电路过热，在所述内燃机的起动开始后的规定的定时进行该内燃机的起动的停止指令的停止指令装置；在产生所述内燃机的起动指令时、以起动该内燃机的方式控制所述起动装置，在该内燃机的起动期间、通过所述停止指令装置产生该内燃机的起动停止指令时，以停止该内燃机的起动的方式控制所述起动装置，将从该停止指令起作为冷却所述驱动电路以允许再起动的时间设定的可再起动时间的经过作为再起动的条件之一，以起动该内燃机的方式控制所述起动装置的起动控制装置；所述驱动轴与车轴连接。The first hybrid vehicle of the present invention is characterized in that it is equipped with the first driving device of the present invention in any one of the above-mentioned forms, that is, basically the driving device is a kind of power from the internal combustion engine and from the driving motor. A driving device that outputs the power of the internal combustion engine to the drive shaft, wherein there is a starter motor that can rotate the crankshaft of the internal combustion engine, a drive circuit that drives the starter motor, and a starter device that can start the internal combustion engine; in order to prevent the drive circuit from overheating, a stop command device that issues a stop command to start the internal combustion engine at a predetermined timing after the start of the internal combustion engine; During the starting of the internal combustion engine, when the start stop command of the internal combustion engine is generated by the stop command device, the starting device is controlled in such a manner as to stop the starting of the internal combustion engine, and the drive circuit is cooled from the stop command to allow restarting. The elapse of the restartable time set by the starting time is used as one of the restarting conditions, and the starting control device of the starting device is controlled to start the internal combustion engine; the driving shaft is connected to the axle.

在本发明的混合动力汽车中，由于装载有上述任一形态的本发明的第1种驱动装置，能够具有本发明的第1种驱动装置的效果，例如能够具有防止在内燃机的起动和再起动之际，转动内燃机的曲轴用的起动用电动机的驱动电路因过热所致的破损的效果、能够更可靠地起动内燃机的效果、以及能够更迅速地起动内燃机的效果等同样的效果。In the hybrid electric vehicle of the present invention, since the first driving device of the present invention of any of the above-mentioned forms is loaded, the effect of the first driving device of the present invention can be obtained, for example, the starting and restarting of the internal combustion engine can be prevented. At the same time, the effect of damage to the drive circuit of the starter motor for turning the crankshaft of the internal combustion engine due to overheating, the effect of starting the internal combustion engine more reliably, and the effect of starting the internal combustion engine more quickly are the same effects.

本发明的第2种驱动装置为，一种可将来自内燃机的动力和来自驱动用电动机的动力向驱动轴输出的驱动装置，其中，具有：带有可使所述内燃机曲轴转动的起动用电动机和驱动该起动用电动机的驱动电路、可使该内燃机起动的起动装置；检测出所述驱动电路的至少一部分的温度的温度检测装置；产生所述内燃机的起动指令时，根据由所述温度检测装置检测出的温度，设定可转动曲轴时间的可转动曲轴时间设定装置；和产生所述内燃机的起动指令时，以起动所述内燃机的方式控制所述起动装置，从开始该内燃机的起动起经过所述设定的可转动曲轴时间时，停止该内燃机的起动的起动控制装置。The second driving device of the present invention is a driving device capable of outputting power from an internal combustion engine and a driving motor to a drive shaft, wherein: a starter motor capable of rotating the crankshaft of the internal combustion engine is provided. and a drive circuit for driving the starter motor, a starter device capable of starting the internal combustion engine; a temperature detection device for detecting the temperature of at least a part of the drive circuit; the temperature detected by the device, the rotatable crankshaft time setting means for setting the rotatable crankshaft time; A start control device that stops the start of the internal combustion engine when the set crankshaft time has elapsed.

在本发明的第2种驱动装置中，产生内燃机的起动指令时，检测出内燃机的起动用电动机的驱动电路的温度，以设定可转动曲轴时间的同时，以起动内燃机的方式控制具有起动用电动机和其驱动电路的起动装置，从开始该内燃机的起动起经过设定的可转动曲轴时间时，停止该内燃机的起动。因此，能够防止起动用电动机的驱动电路因过热所致的破损。在此，所述可转动曲轴时间设定装置可以为：以由所述温度检测装置检测出的温度越高则越短的倾向设定可转动曲轴时间的装置。In the 2nd driving device of the present invention, when generating the starting command of the internal combustion engine, detect the temperature of the drive circuit of the electric motor for starting the internal combustion engine, while setting the crankshaft rotatable time, to start the mode of the internal combustion engine to control the starting function. The starting device of the electric motor and its drive circuit stops the starting of the internal combustion engine when the set crankshaft time has elapsed from the start of the internal combustion engine. Therefore, damage to the drive circuit of the starter motor due to overheating can be prevented. Here, the crankable time setting means may be a device that sets the crankable time in a tendency to be shorter as the temperature detected by the temperature detection means is higher.

另外，在本发明的第2种驱动装置中，可具有设定包含有将根据所述驱动装置的驱动状态至少使来自所述内燃机的动力的一部分向所述驱动轴输出的内燃机运转模式和停止该内燃机并只将来自所述电动机的动力向所述驱动轴输出的电动机驱动模式的多个模式中的任意一个模式的模式设定装置。In addition, in the second driving device of the present invention, the setting may include an internal combustion engine operation mode that outputs at least part of the power from the internal combustion engine to the drive shaft according to the driving state of the driving device and stop. A mode setting device for any one of a plurality of motor drive modes in which the internal combustion engine outputs only power from the electric motor to the drive shaft.

本发明的第2种混合动力汽车的特征在于，装载有上述任一形态的本发明的第2种驱动装置，即，基本上该驱动装置为一种可将来自内燃机的动力和来自驱动用电动机的动力向驱动轴输出的驱动装置，其中，具有：带有可使所述内燃机曲轴转动的起动用电动机和驱动该起动用电动机的驱动电路、可使该内燃机起动的起动装置；检测出所述驱动电路的至少一部分的温度的温度检测装置；产生所述内燃机的起动指令时，根据由所述温度检测装置检测出的温度，设定可转动曲轴时间的可转动曲轴时间设定装置；和产生所述内燃机的起动指令时，以起动所述内燃机的方式控制所述起动装置，从开始该内燃机的起动起经过所述设定的可转动曲轴时间时，停止该内燃机的起动的起动控制装置；所述驱动轴与车轴连接。The second hybrid electric vehicle of the present invention is characterized in that it is equipped with the second driving device of the present invention in any of the above-mentioned forms, that is, basically the driving device is a kind of power from the internal combustion engine and from the driving motor. A driving device that outputs the power of the internal combustion engine to the drive shaft, wherein it has: a starter motor that can rotate the crankshaft of the internal combustion engine, a drive circuit that drives the starter motor, and a starter device that can start the internal combustion engine; temperature detecting means for the temperature of at least a part of the drive circuit; rotatable crank time setting means for setting the rotatable crank time based on the temperature detected by the temperature detecting means when a starting command of the internal combustion engine is generated; and generating When the start command of the internal combustion engine is commanded, the starting device is controlled to start the internal combustion engine, and the start control device stops the starting of the internal combustion engine when the set crankshaft time has elapsed since the starting of the internal combustion engine; The drive shaft is connected to the axle.

在本发明的混合动力汽车中，由于装载有上述任一形态的本发明的第2种驱动装置，能够具有本发明的第2种驱动装置的效果，例如能够具有防止在内燃机的起动和再起动之际，转动内燃机的曲轴用的起动用电动机的驱动电路因过热所致的破损的效果、能够更可靠地起动内燃机的效果、以及能够更迅速地起动内燃机的效果等同样的效果。In the hybrid electric vehicle of the present invention, since the second driving device of the present invention in any of the above-mentioned forms is loaded, the effect of the second driving device of the present invention can be obtained, for example, it can prevent the starting and restarting of the internal combustion engine. At the same time, the effect of damage to the drive circuit of the starter motor for turning the crankshaft of the internal combustion engine due to overheating, the effect of starting the internal combustion engine more reliably, and the effect of starting the internal combustion engine more quickly are the same effects.

本发明的第1种驱动装置的控制方法为，该驱动装置具有：可向驱动轴输出动力的内燃机；可向所述驱动轴输出动力的驱动用电动机；带有可使所述内燃机曲轴转动的起动用电动机和驱动该起动用电动机的驱动电路、可使该内燃机起动的起动装置；为了防止该驱动电路过热在所述内燃机的起动开始后的规定的定时内，进行该内燃机的起动的停止指令的停止指令装置，在该控制方法中，产生所述内燃机的起动指令时，以起动该内燃机的方式控制所述起动装置，在该内燃机的起动期间、由所述停止指令装置产生该内燃机的起动的停止指令时，以停止该内燃机的起动的方式控制所述起动装置，将从该停止指令起作为冷却所述驱动电路以允许再起动的时间设定的可再起动时间的经过作为再起动的条件之一，以起动该内燃机的方式控制所述起动装置。The control method of the first driving device of the present invention is that the driving device has: an internal combustion engine capable of outputting power to a drive shaft; a driving electric motor capable of outputting power to the driving shaft; A starter motor, a drive circuit for driving the starter motor, and a starter device capable of starting the internal combustion engine; in order to prevent overheating of the drive circuit, a stop command for starting the internal combustion engine is issued within a predetermined timing after starting the start of the internal combustion engine In the control method, when a start command of the internal combustion engine is generated, the start device is controlled to start the internal combustion engine, and the start of the internal combustion engine is generated by the stop command device during the start of the internal combustion engine. When a stop command is issued, the starting device is controlled to stop the starting of the internal combustion engine, and the restartable time set as the time for cooling the drive circuit to allow restart is taken as the restart time from the stop command. One of the conditions, the starting device is controlled in such a way as to start the internal combustion engine.

根据该本发明的第1种驱动装置的控制方法，在产生内燃机的起动指令时、以起动内燃机的方式控制具有起动用电动机和其驱动电路的起动装置，在该内燃机的起动期间、为了防止驱动电路的过热，在产生内燃机的起动的停止指令时，以停止该内燃机的起动的方式控制起动装置，将从该停止指令起作为冷却驱动电路以允许再起动的时间设定的可再起动时间的经过作为再起动的条件之一，以起动内燃机的方式再次控制起动装置，因此，在内燃机的起动和再起动之际，能够防止转动内燃机的曲轴用的起动用电动机的驱动电路因过热受到的破损。结果，能够更可靠地起动内燃机。并且，由于可再起动时间为冷却驱动电路以可成为可再起动的时间，与等待经过该时间以上的时间再起动相比，能够迅速地起动内燃机。在此，对于“作为再起动的条件之一”意思为，作为再起动的条件考虑有多个必要条件，可再起动时间的经过为包含在该多个必要条件中的一个。According to the first driving device control method of the present invention, when a starting command of the internal combustion engine is generated, the starting device having the starting electric motor and its drive circuit is controlled in a manner to start the internal combustion engine. During the starting period of the internal combustion engine, in order to prevent driving Overheating of the circuit, when a stop command for starting the internal combustion engine is generated, the starting device is controlled to stop the starting of the internal combustion engine, and the restartable time is set as the time for cooling the driving circuit to allow restarting from the stop command As one of the conditions for restarting, the starter device is re-controlled in a manner of starting the internal combustion engine. Therefore, when the internal combustion engine is started and restarted, damage to the drive circuit of the starter motor for rotating the crankshaft of the internal combustion engine due to overheating can be prevented. . As a result, the internal combustion engine can be started more reliably. In addition, since the restartable time is the time when the drive circuit is cooled so that the restart is possible, the internal combustion engine can be quickly started compared to waiting for a restart after this time or more has elapsed. Here, "as one of the restarting conditions" means that a plurality of necessary conditions are considered as the restarting condition, and the elapse of the restartable time is one of the plurality of necessary conditions.

本发明的第2种驱动装置的控制方法为，该驱动装置具有：可向驱动轴输出动力的内燃机；可向所述驱动轴输出动力的驱动用电动机；带有可使所述内燃机曲轴转动的起动用电动机和驱动该起动用电动机的驱动电路、可使该内燃机起动的起动装置；检测出所述驱动电路的至少一部分的温度的温度检测装置，在该控制方法中，产生所述内燃机的起动指令时，根据所述温度检测装置检测出的温度，设定可转动曲轴时间的同时，以起动所述内燃机的方式控制所述起动装置，从开始所述内燃机的起动起经过所述设定的可转动曲轴时间时，停止该内燃机的起动。The control method of the second driving device of the present invention is that the driving device has: an internal combustion engine capable of outputting power to the drive shaft; a driving electric motor capable of outputting power to the driving shaft; A starter motor, a drive circuit for driving the starter motor, a starter device capable of starting the internal combustion engine, and a temperature detection device for detecting the temperature of at least a part of the drive circuit. In the control method, the start of the internal combustion engine is generated. When commanding, according to the temperature detected by the temperature detection device, while setting the crankshaft rotatable time, the starting device is controlled in a manner to start the internal combustion engine, and the set period of time has elapsed since the start of the internal combustion engine is started. When the crankshaft time can be turned, the starting of the internal combustion engine is stopped.

根据该本发明的第2种驱动装置的控制方法，由于产生内燃机的起动指令时，检测出内燃机的起动用电动机的驱动电路的温度，设定可转动曲轴时间的同时，以起动内燃机的方式控制具有起动用电动机和其驱动电路的起动装置，从开始该内燃机的起动起经过设定的可转动曲轴时间时，停止该内燃机的起动，因此，能够防止起动用电动机的驱动电路因过热所致的破损。According to the control method of the second driving device of the present invention, when the starting command of the internal combustion engine is generated, the temperature of the drive circuit of the starting motor of the internal combustion engine is detected, and the crankshaft can be rotated. Time is set, and the internal combustion engine is controlled in a manner of starting. The starter device having the starter motor and its drive circuit stops the start of the internal combustion engine when the set crankshaft time has elapsed since starting the start of the internal combustion engine, so that the drive circuit of the starter motor can be prevented from being damaged due to overheating. damaged.

附图说明Description of drawings

图1为示意地示出装载有本发明一实施例的驱动装置的混合动力汽车20的构成的构成图；FIG. 1 is a structural diagram schematically showing the composition of ahybrid vehicle 20 equipped with a driving device according to an embodiment of the present invention;

图2为示出由混合动力用电子控制单元70输入发动机22的起动指令的发动机ECU29执行的、发动机22的起动处理例程的一例的流程图；FIG. 2 is a flowchart showing an example of a start processing routine of theengine 22 executed by theengine ECU 29 that receives a start command of theengine 22 from the hybridelectronic control unit 70;

图3为说明使发动机22的曲轴转动失败、再起动发动机22之际的状况的说明图；FIG. 3 is an explanatory diagram for explaining the situation when the cranking of theengine 22 fails and theengine 22 is restarted;

图4为示出变形例的起动处理例程的一例的流程图；FIG. 4 is a flowchart showing an example of a start-up processing routine of a modified example;

图5为示出转动曲轴时间设定用图表的一例的说明图；Fig. 5 is an explanatory diagram showing an example of a graph for setting crankshaft rotation time;

图6为示意地示出变形例的混合动力汽车120的构成的构成图；FIG. 6 is a configuration diagram schematically showing the configuration of a hybrid vehicle 120 according to a modified example;

图7为示意地示出变形例的混合动力汽车220的构成的构成图。FIG. 7 is a configuration diagram schematically showing the configuration of a hybrid vehicle 220 according to a modified example.

具体实施形式Specific implementation form

下面，对本发明的具体实施方式用实施例进行说明。图1为示意地示出装载有本发明一实施例的驱动装置的混合动力汽车20的构成的构成图。实施例的混合动力汽车20正如图示，具有：发动机22，与作为发动机22的输出轴的曲轴24连接的行星齿轮30，与行星齿轮30连接的可发电的电机40，与行星齿轮30连接的同时、通过差动齿轮64而与驱动轮66a、66b连接的、作为无级变速器的CVT50，和控制整个装置的混合动力用电子控制单元70。Next, specific embodiments of the present invention will be described using examples. FIG. 1 is a configuration diagram schematically showing the configuration of ahybrid vehicle 20 equipped with a drive device according to an embodiment of the present invention. Thehybrid vehicle 20 of the embodiment has, as shown in the figure, anengine 22, aplanetary gear 30 connected to acrankshaft 24 as an output shaft of theengine 22, apower generating motor 40 connected to theplanetary gear 30, and amotor 40 connected to theplanetary gear 30. Meanwhile, aCVT 50 serving as a continuously variable transmission connected to drivewheels 66 a and 66 b via adifferential gear 64 , and anelectronic control unit 70 for hybrid power that controls the entire device.

发动机22为通过汽油或轻油等的碳氢化合物类燃料输出动力的内燃机，在发动机22的曲轴24上，通过皮带28装有发电以产生向未图示的辅机供给的电力的同时、起动发动机22的起动电机26。发动机22的运转控制例如燃料喷射控制或点火控制、吸入空气量调节控制等由发动机用电子控制单元(以下称作发动机ECU)29进行。起动电机26通过发动机ECU29，根据检测出其旋转位置的旋转位置传感器26a来的信号，通过开关控制驱动与二次电池44的电力线连接的逆变器27的6个开关元件。设置在逆变器27的6个开关元件各自附近的多个温度传感器的任意一个(检测出温度)在开关元件的容许温度的上限附近的温度以上时，将加热失败(フエイル，失效)信号向发动机ECU29输出。发动机ECU29与混合动力用电子控制单元70通信连通，通过来自混合动力用电子控制单元70的控制信号运转控制发动机22，同时，根据需要向混合动力用电子控制单元70输出与发动机22的运转状态有关的数据。Theengine 22 is an internal combustion engine that outputs power by hydrocarbon fuels such as gasoline or light oil. A generator is installed on thecrankshaft 24 of theengine 22 through abelt 28 to generate electric power supplied to auxiliary machines (not shown) and start Thestarter motor 26 of theengine 22 . Operation control of theengine 22 , such as fuel injection control, ignition control, intake air volume adjustment control, etc., is performed by an engine electronic control unit (hereinafter referred to as engine ECU) 29 . Thestarter motor 26 drives six switching elements of theinverter 27 connected to the power line of thesecondary battery 44 through switch control by theengine ECU 29 based on a signal from arotational position sensor 26 a that detects its rotational position. When any one (detected temperature) of a plurality of temperature sensors provided near each of the six switching elements of theinverter 27 is above the temperature near the upper limit of the allowable temperature of the switching element, a heating failure (fail) signal is sent to Engine ECU29 output. Theengine ECU 29 communicates with theelectronic control unit 70 for hybrid power, and controls the operation of theengine 22 through the control signal from theelectronic control unit 70 for hybrid power. The data.

行星齿轮30具有外齿齿轮的太阳齿轮31、与该太阳齿轮31同轴设置的内齿齿轮的齿圈32、与太阳齿轮31啮合的第1小齿轮33、与该第1小齿轮33和齿圈32啮合的第2小齿轮34、以及将第1小齿轮33和第2小齿轮34保持可自由地自转和公转的行星齿轮架35，太阳齿轮31和齿圈32以及行星齿轮架35作为旋转要素而进行差动作用。行星齿轮30的太阳齿轮31与发动机22的曲轴24连接，行星齿轮架35与电机40的旋转轴41连接，发动机22的输出向太阳齿轮31输入的同时，通过行星齿轮架35可进行与电机40的输出的交换/交替使用。行星齿轮架35通过离合器C1，齿圈32通过离合器C2，而与CVT50的输入轴51连接，通过离合器C1和离合器C2的连接状态，成为禁止太阳齿轮31和齿圈32以及行星齿轮架35这3个旋转要素所致的差动而成为一体的旋转体，即，将发动机22的曲轴24和电机40的旋转轴41以及CVT50的输入轴51成一体的旋转体。另外，在行星齿轮30上将齿圈32固定到壳体39上、也设有禁止其旋转的制动器B1。Theplanetary gear 30 has asun gear 31 of an external tooth gear, aring gear 32 of an internal tooth gear arranged coaxially with thesun gear 31, afirst pinion gear 33 meshing with thesun gear 31, and thefirst pinion gear 33 and the teeth. Thesecond pinion 34 meshing with thering 32, and theplanetary gear carrier 35 that keeps thefirst pinion 33 and thesecond pinion 34 free to rotate and revolve freely, and thesun gear 31, thering gear 32 and theplanetary gear carrier 35 as the rotation Elements perform differential action. Thesun gear 31 of theplanetary gear 30 is connected with thecrankshaft 24 of theengine 22, and theplanetary gear carrier 35 is connected with the rotatingshaft 41 of themotor 40. The swap/alternate use of the output. Theplanetary gear carrier 35 is connected to theinput shaft 51 of theCVT 50 through the clutch C1 and thering gear 32 through the clutch C2, and the connection state of the clutch C1 and the clutch C2 prevents thesun gear 31, thering gear 32, and theplanetary gear carrier 35. The rotating body that is integrated by the differential caused by each rotating element, that is, the rotating body that integrates thecrankshaft 24 of theengine 22, the rotatingshaft 41 of themotor 40, and theinput shaft 51 of the CVT50. In addition, aring gear 32 is fixed to acase 39 on theplanetary gear 30 and a brake B1 for preventing its rotation is also provided.

电机40例如可作为发电机驱动并且可作为电动机驱动的公知的同步发电电动机的结构，通过逆变器43与二次电池44进行电力的交换。电机40由电机用电子控制单元(以下称作电机ECU)49驱动控制，向电机ECU49输入为了驱动控制电机40的必要的信号或管理二次电池44的必要信号，例如检测出电机40的转子的旋转位置的旋转位置传感器45来的信号或通过未图示的电流传感器检测出的施加到电机40上的相电流、设置于二次电池44的端子间的电压传感器46来的端子间电压、安装在二次电池44的电力线上的电流传感器47来的充放电电流、安装在二次电池44上的温度传感器48来的电池温度等，由电机ECU49向逆变器43输出开关控制信号。在电机ECU49中，为了管理二次电池44，根据由电流传感器47检测出的充放电电流的积算值，计算剩余容量(SOC)。另外，电机ECU49与混合动力用电子控制单元70通信连通，根据来自混合动力用电子控制单元70的控制信号驱动控制电机40的同时，根据需要将与电机40的运转状态或二次电池44的状态有关的数据向混合动力用电子控制单元70输出。Themotor 40 has a structure of a known synchronous generator motor that can be driven as a generator or a motor, for example, and exchanges electric power with asecondary battery 44 through aninverter 43 . Themotor 40 is driven and controlled by a motor electronic control unit (hereinafter referred to as a motor ECU) 49, and a necessary signal for driving and controlling themotor 40 or a necessary signal for managing thesecondary battery 44 is input to themotor ECU 49, for example, the rotor of themotor 40 is detected. The signal from therotational position sensor 45 of the rotational position, the phase current applied to themotor 40 detected by a current sensor not shown in the figure, the inter-terminal voltage from avoltage sensor 46 provided between the terminals of thesecondary battery 44 , and the mounting Themotor ECU 49 outputs switching control signals to theinverter 43 , such as the charge and discharge current from thecurrent sensor 47 on the power line of thesecondary battery 44 , the battery temperature from thetemperature sensor 48 mounted on thesecondary battery 44 , and the like. In order to manage thesecondary battery 44 , themotor ECU 49 calculates a remaining capacity (SOC) based on the integrated value of the charging and discharging current detected by thecurrent sensor 47 . In addition, themotor ECU 49 communicates with theelectronic control unit 70 for hybrid power, and drives and controls themotor 40 according to the control signal from theelectronic control unit 70 for hybrid power. The relevant data is output to the hybridelectronic control unit 70 .

CVT50具有槽幅可变地与输入轴51连接的初级皮带轮53，以同样槽幅可变地与作为驱动轴的输出轴52连接的次级皮带轮54，架设在初级皮带轮53和次级皮带轮54的槽上的皮带55，以及可变更初级皮带轮53和次级皮带轮54的槽幅的第1致动器56和第2致动器57，通过由第1致动器56和第2致动器57变更初级皮带轮53和次级皮带轮54的槽幅，将输入轴51的动力无级变速地向输出轴52输出。CVT50的变速比的控制由CVT用电子控制单元(以下称作CVTECU)59执行。向该CVTECU59中输入安装在输入轴51上的转速传感器61来的输入轴51的转速和安装到输出轴52上的转速传感器62来的输出轴52的转速，由CVTECU59向第1致动器56和第2致动器57输出驱动信号。另外，CVTECU59与混合动力用电子控制单元70通信连通，根据来自混合动力用电子控制单元70的控制信号控制CVT50的变速比的同时，根据需要将与CVT50的运转状态有关的数据向混合动力用电子控制单元70输出。TheCVT 50 has aprimary pulley 53 whose groove width is variably connected to aninput shaft 51, and a secondary pulley 54 which is also variably connected to anoutput shaft 52 serving as a drive shaft. Thebelt 55 on the groove, and thefirst actuator 56 and thesecond actuator 57 that can change the groove width of theprimary pulley 53 and the secondary pulley 54, through thefirst actuator 56 and thesecond actuator 57 The groove widths of theprimary pulley 53 and the secondary pulley 54 are changed, and the power of theinput shaft 51 is output to theoutput shaft 52 in a continuously variable manner. Control of the gear ratio of theCVT 50 is executed by an electronic control unit for CVT (hereinafter referred to as CVTECU) 59 . The rotation speed of theinput shaft 51 from the rotation speed sensor 61 mounted on theinput shaft 51 and the rotation speed of theoutput shaft 52 from the rotation speed sensor 62 mounted on theoutput shaft 52 are input into theCVTECU 59, and thefirst actuator 56 is sent from theCVTECU 59. And thesecond actuator 57 outputs a driving signal. In addition, the CVTECU59 communicates with theelectronic control unit 70 for hybrid power, controls the gear ratio of the CVT50 according to the control signal from theelectronic control unit 70 for hybrid power, and sends the data related to the operating state of the CVT50 to the electronic control unit for hybrid power as needed. Thecontrol unit 70 outputs.

混合动力用电子控制单元70由以CPU72为中心的微处理器构成，除了CPU72，还具有记忆处理程序的ROM74，暂时记忆数据的RAM76，未图示的输入和输出端口和通信端口。来自转速传感器61的输入轴51的转速Ni和来自转速传感器62的输出轴52的转速No，从检测出变速杆80的操作位置的变速位置传感器81来的变速位置SP，从检测出加速踏板82的踩下量的加速踏板位置传感器83来的加速踏板开度Acc，从检测出制动踏板84的踩下量的制动踏板位置传感器85来的制动踏板位置BP，来自车速传感器86的车速V等通过输入端口向混合动力用电子控制单元70输入。混合动力用电子控制单元70通过输出端口输出对离合器C1或离合器C2的驱动信号或对制动器B1的驱动信号，对设置在驾驶席前方的仪表板上的异常灯88的点亮信号。另外，混合动力用电子控制单元70正如前述，通过通信端口，与发动机ECU29或电机ECU49，CVTECU59连接，与发动机ECU29或电机ECU49，CVTECU59进行各种控制信号或数据的交换。The hybridelectronic control unit 70 is composed of a microprocessor centered on aCPU 72. In addition to theCPU 72, it also has aROM 74 for storing processing programs, aRAM 76 for temporarily storing data, input and output ports and communication ports not shown. The rotational speed Ni of theinput shaft 51 from the rotational speed sensor 61 and the rotational speed No of theoutput shaft 52 from the rotational speed sensor 62 are detected from the shift position SP from theshift position sensor 81 that detects the operating position of theshift lever 80 , and from theaccelerator pedal 82 . Accelerator opening Acc from the acceleratorpedal position sensor 83 of the depressing amount of thebrake pedal 84, brake pedal position BP from the brakepedal position sensor 85 detecting the depressing amount of thebrake pedal 84, vehicle speed from the vehicle speed sensor 86 V and the like are input to the hybridelectronic control unit 70 through the input port. The hybridelectronic control unit 70 outputs a drive signal to the clutch C1 or clutch C2 or a drive signal to the brake B1 through an output port, and a signal to turn on anabnormal lamp 88 provided on the instrument panel in front of the driver's seat. In addition, the hybridelectronic control unit 70 is connected to theengine ECU 29 ,motor ECU 49 , andCVTECU 59 through communication ports as described above, and exchanges various control signals or data with theengine ECU 29 ,motor ECU 49 , andCVTECU 59 .

在如此结构的本实施例的混合动力汽车20中，起步时，在使离合器C1接合的同时使离合器C2和制动器B1松开，在停止发动机22运转的状态下只由来自电机40的动力起步，起步后，通过起动电机26使发动机22起动，同时，使离合器C2边打滑边接合(在打滑的过程中接合)，发动机22的曲轴24与电机40的旋转轴41以及CVT50的输入轴51成一体的旋转体，在来自发动机22的动力下行驶。In thehybrid vehicle 20 of the present embodiment having such a structure, when starting, the clutch C2 and the brake B1 are released while the clutch C1 is engaged, and only the power from themotor 40 is started while theengine 22 is stopped. After starting, theengine 22 is started by thestarter motor 26, and at the same time, the clutch C2 is slipped and engaged (engaged in the process of slipping), thecrankshaft 24 of theengine 22 is integrated with the rotatingshaft 41 of themotor 40 and theinput shaft 51 of the CVT50 The revolving body travels under the power from theengine 22.

下面，对实施例的混合动力汽车20中发动机22的起动时的动作进行说明。图2为示出由混合动力用电子控制单元70输入发动机22的起动指令的发动机ECU29执行的、发动机22的起动处理例程的一例的流程图。Next, the operation when theengine 22 is started in thehybrid vehicle 20 of the embodiment will be described. FIG. 2 is a flowchart showing an example of a start processing routine of theengine 22 executed by theengine ECU 29 that receives a start command of theengine 22 from the hybridelectronic control unit 70 .

执行起动处理例程时，发动机ECU29，首先，驱动起动电机26，执行开始使发动机22的曲轴转动的处理(步骤S100)。然后，输入发动机22的转速Ne(步骤S110)，判定输入的转速Ne是否为阈值Nset(步骤S120)。在此，阈值Nset作为开始发动机22的燃料喷射控制或点火控制的发动机22的转速设定，例如设定成1000转等。转速Ne不足阈值Nset时，判断为还没有到达进行燃料喷射或点火的转速，输入驱动起动电机26的逆变器27来的加热失败信号(步骤S130)，判定加热失败信号是否接通(on)(步骤S140)。正如前述，加热失败信号在设置于逆变器27的开关元件附近的多个温度传感器的任意一个处于开关元件的容许温度的上限附近的温度以上时，为成为接通的信号。加热失败信号断开(off)时，判断为逆变器27的开关元件处于正常范围的温度，返回步骤S110的发动机22的转速Ne的输入处理。在如此步骤S110～S140之间的处理反复进行期间，判定为由步骤S120输入的转速Ne为阈值Nset以上时，开始发动机22的燃料喷射控制或点火控制(步骤S150)，结束该起动处理例程。When the startup processing routine is executed, theengine ECU 29 first drives thestarter motor 26 to execute a process of starting the cranking of the engine 22 (step S100 ). Then, the rotational speed Ne of theengine 22 is input (step S110), and it is determined whether the input rotational speed Ne is the threshold value Nset (step S120). Here, the threshold Nset is set as the rotational speed of theengine 22 at which the fuel injection control or the ignition control of theengine 22 is started, for example, 1000 revolutions or the like. When the rotational speed Ne is less than the threshold value Nset, it is determined that the rotational speed for fuel injection or ignition has not been reached, and the heating failure signal from theinverter 27 for driving thestarter motor 26 is input (step S130), and it is determined whether the heating failure signal is turned on (on). (step S140). As described above, the heating failure signal is turned on when any one of the plurality of temperature sensors provided near the switching elements of theinverter 27 is at or above the upper limit of the allowable temperature of the switching elements. When the heating failure signal is turned off (off), it is determined that the temperature of the switching element of theinverter 27 is in the normal range, and the process returns to the input process of the rotational speed Ne of theengine 22 in step S110. While the processing between steps S110 to S140 is repeated, if it is determined that the rotational speed Ne input in step S120 is equal to or greater than the threshold value Nset, the fuel injection control or ignition control of theengine 22 is started (step S150), and the startup processing routine is terminated. .

另外，在步骤S110～S140之间的处理反复进行期间，通过步骤S140判定为加热失败信号接通时，判断为因任何事情使转动曲轴失败、逆变器27的开关元件的任意一个到达正常范围的上限附近的温度、会产生破损，停止起动电机26的驱动的同时(步骤S160)，将计数发动机22的再起动次数的再起动计数器C的数值只增加数值1(步骤S170)。在此，通过传送由混合动力用电子控制单元70来的发动机22的起动指令，在执行该起动处理例程之际，再起动计数器C的初始值设定为数值0。然后，在再起动计数器C没有达到阈值Cref的条件下(步骤S190)，等待到经过规定的时间(步骤S180)，返回由步骤S100的起动电机26进行的开始转动曲轴的处理。在此，作为等待时间的规定时间，在本实施例中，设定为将逆变器27的开关元件的温度通过放热在经过起动发动机22的必要时间(例如1秒或2秒等)降低到可驱动起动电机26的程度所需时间、和通过起动电机26的驱动移动的发动机22的曲轴位置返回到通常的停止位置所需的时间中、时间较长的一方，可相对发动机22的构造或起动电机26的性能、逆变器27的开关元件的种类通过实验等求出。另外，阈值Cref可以设定为确定容许转动曲轴失败的次数的数值，例如，只容许1次失败时设定的数值为2，容许2次失败时设定的数值为3。此外，容许转动曲轴的失败的次数可以是任何数值，但是可以根据由电机40进行的起步过渡为由发动机22的动力进行的行驶所容许的时间所确定。另外，在本实施例中，转动曲轴失败时，等待经过规定时间以返回起动电机26所致的转动曲轴的开始的处理，但上述所意味的规定时间的经过为发动机22的再起动的条件之一，其他条件例如通过安装到发动机22上的各种传感器(未图示)没有检测出任何异常等的条件成立也为再起动发动机22的必要条件。由于这并不是本发明的核心，省略了对流程图的图示和详细说明。In addition, when the process between steps S110 to S140 is repeated, if it is determined in step S140 that the heating failure signal is on, it is determined that the crankshaft has failed to rotate due to any event, and any one of the switching elements of theinverter 27 has reached the normal range. The temperature in the vicinity of the upper limit will cause damage, and while the drive of thestarter motor 26 is stopped (step S160), the value of the restart counter C counting the number of restarts of theengine 22 is only increased by 1 (step S170). Here, the initial value of the restart counter C is set to a value of 0 when the start processing routine is executed by transmitting the start command of theengine 22 from the hybridelectronic control unit 70 . Then, under the condition that the restart counter C has not reached the threshold value Cref (step S190), wait until a predetermined time elapses (step S180), and return to the process of starting the crankshaft by thestarter motor 26 in step S100. Here, as the predetermined time of the waiting time, in this embodiment, the temperature of the switching element of theinverter 27 is set so that the temperature of the switching element of theinverter 27 is lowered by the time necessary for starting the engine 22 (for example, 1 second or 2 seconds). The time required to drive thestarter motor 26 and the time required for the crankshaft position of theengine 22 moved by the drive of thestarter motor 26 to return to the normal stop position, whichever is longer, can be determined with respect to the structure of theengine 22. Or the performance of thestarter motor 26 and the type of switching elements of theinverter 27 are determined by experiments or the like. In addition, the threshold Cref can be set as a numerical value that determines the allowable number of failures to rotate the crankshaft, for example, the set value is 2 when only one failure is allowed, and the set value is 3 when two failures are allowed. In addition, the number of times of allowable failure to turn the crankshaft may be any value, but may be determined according to the allowable time for transition from start by themotor 40 to travel by power of theengine 22 . In addition, in the present embodiment, when the cranking fails, the process of starting the cranking by returning to thestarter motor 26 after a predetermined time has elapsed, but the elapse of the predetermined time as mentioned above is one of the conditions for restarting theengine 22. First, other conditions such as the fact that no abnormality is detected by various sensors (not shown) attached to theengine 22 are also necessary conditions for restarting theengine 22 . Since this is not the core of the present invention, the illustration and detailed description of the flowchart are omitted.

图3为示出发动机22的转动曲轴失败、再起动发动机22之际的起动电机26的动作、逆变器27的温度、加热失败信号的状态、再起动许可的判定的状态的时间变化的说明图。正如图示，时间t1为发动机22的起动指令时，驱动起动电机26，开始发动机22的转动曲轴(操作)(步骤S100)，但起动电机26只稍许旋转就止住。此时，由于在起动电机26中通过逆变器27成为电流流动的状态，构成逆变器27的开关元件中成为接通状态的元件的温度上升。该开关元件处于容许温度的上限附近时，从逆变器27向发动机ECU29输出的加热失败信号成为接通状态。此时(时间t2)，起动电机26的驱动被停止(步骤S160)。然后，在经过逆变器27的开关元件的温度被冷却并且发动机22的曲轴位置返回通常的停止位置所需时间(t3-t2)的时间t3时，容许发动机22的再起动，再次驱动起动电机26，开始发动机22的转动曲轴。图3中，表示起动电机26的转速一旦在时间t2以下成为负侧后再次成为正侧而成为0值，即发动机22的曲轴位置返回通常的停止位置的状况。3 is an illustration showing time changes of the operation of thestarter motor 26, the temperature of theinverter 27, the state of the heating failure signal, and the state of the determination of the restart permission when theengine 22 fails to crank and theengine 22 is restarted. picture. As shown in the figure, when time t1 is a starting command of theengine 22, thestarter motor 26 is driven to start cranking (operation) of the engine 22 (step S100), but thestarter motor 26 only rotates slightly and then stops. At this time, since the current flows through theinverter 27 in thestarter motor 26 , the temperature of the on-state element among the switching elements constituting theinverter 27 rises. When the switching element is near the upper limit of the allowable temperature, the heating failure signal output from theinverter 27 to theengine ECU 29 is turned on. At this time (time t2), the drive of thestarter motor 26 is stopped (step S160). Then, when the temperature of the switching element of theinverter 27 is cooled and the time t3 required for the crankshaft position of theengine 22 to return to the normal stop position (t3-t2), the restart of theengine 22 is allowed, and the starter motor is driven again. 26. Start cranking of theengine 22. In FIG. 3 , the rotational speed of thestarter motor 26 once becomes negative at time t2 or less, and then becomes positive again to zero, that is, the crankshaft position of theengine 22 returns to the normal stop position.

再次开始发动机22的转动曲轴、并且在步骤S120中发动机22的转速Ne成为阈值Nset以上(包括其本数)时，开始发动机22的燃料喷射控制或点火控制(步骤S150)，结束本例程。另外，即使再次开始发动机22的转动曲轴，如转动曲轴也失败，则直到再起动计数器C到达阈值Cref为止，等待到作为冷却逆变器27的开关元件的温度并且发动机22的曲轴位置返回通常的停止位置所需时间加以设定的规定经过时间，再次重复起动。然后，在步骤S190中，判定为再起动计数器C与阈值Cref相等时，判断为转动曲轴的失败超过容许次数，安装于驾驶席前方的仪表板上的异常灯88点亮(步骤S200)，结束本例程。When the cranking of theengine 22 is resumed and the rotational speed Ne of theengine 22 becomes equal to or greater than the threshold value Nset (including the original number) in step S120, fuel injection control or ignition control of theengine 22 is started (step S150), and this routine ends. In addition, even if the cranking of theengine 22 is started again, if the cranking fails, the restart counter C reaches the threshold value Cref, waits until the temperature of the switching element that cools theinverter 27 and the crank position of theengine 22 returns to the usual The time required for the stop position is set for the specified elapsed time, and the start is repeated again. Then, in step S190, when it is determined that the restart counter C is equal to the threshold value Cref, it is determined that the failure to turn the crankshaft exceeds the allowable number of times, and theabnormal lamp 88 mounted on the instrument panel in front of the driver's seat is turned on (step S200), and the end This routine.

根据上述实施例的混合动力汽车20，由于在发动机22的转动曲轴失败时，将冷却逆变器27的开关元件的温度所需时间与发动机22的曲轴位置返回通常的停止位置所需时间中较长一方的时间设定为规定时间，等待该规定时间经过才再次开始发动机22的转动曲轴，从而能够防止逆变器27的开关元件因过热所致的破损，同时，能够更可靠地进行发动机22再起动之际的转动曲轴操作。结果，与在比经过如此等待时间的定时要早的定时再次开始发动机22的转动曲轴相比，能够更可靠地起动发动机22，并且，与在比经过如此等待时间的定时要迟的定时再次开始发动机22的转动曲轴相比，能够更迅速地起动发动机22。According to thehybrid vehicle 20 of the above-described embodiment, since the time required to cool the temperature of the switching element of theinverter 27 and the time required for the crankshaft position of theengine 22 to return to the usual stop position are shorter when the crankshaft rotation of theengine 22 fails, The longer time is set as a predetermined time, and the crankshaft of theengine 22 is restarted after waiting for the predetermined time to pass, thereby preventing the switching element of theinverter 27 from being damaged due to overheating, and at the same time, theengine 22 can be operated more reliably. Crankshaft operation at the time of restart. As a result, theengine 22 can be started more reliably than restarting the cranking of theengine 22 at a timing earlier than the timing at which such a waiting time has elapsed, and restarting at a timing later than the timing at which such a waiting time has elapsed Theengine 22 can be started more quickly than the crankshaft of theengine 22 can be turned.

在实施例的混合动力汽车20中，发动机22的转动曲轴失败时，将冷却逆变器27的开关元件的温度所需时间与发动机22的曲轴位置返回通常的停止位置所需时间中较长一方的时间设定为(要经过的)规定时间，等待该规定时间经过才再次开始发动机22的转动曲轴，但也可以不考虑发动机22的曲轴位置返回通常的停止位置所需的时间，只考虑冷却逆变器27的开关元件的温度所需的时间，等待经过该时间，才再次开始发动机22的曲轴转动。In thehybrid vehicle 20 of the embodiment, when the cranking of theengine 22 fails, the time required to cool the temperature of the switching element of theinverter 27 and the time required for the crankshaft position of theengine 22 to return to the normal stop position are longer. The time set to (to pass) the specified time, wait for the specified time to elapse before restarting the crankshaft of theengine 22, but it is also possible to ignore the time required for the crankshaft position of theengine 22 to return to the usual stop position, and only consider cooling The time required for the temperature of the switching element of theinverter 27 is reached, and the cranking of theengine 22 is restarted after waiting for the elapse of this time.

在实施例的混合动力汽车20中，因发动机22的转动曲轴失败，停止起动电机26驱动的定时是根据从逆变器27输出的加热失败信号进行的，但也可以在设有检测出逆变器27的各开关元件的温度的温度传感器的同时，将来自各温度传感器的信号向发动机ECU29输入，由任意一个温度传感器检测出的温度达到设定在容许温度的上限附近的规定温度时，停止起动电机26的驱动。此时，代替冷却逆变器27的开关元件的温度所需的时间，可考虑由各温度传感器检测出的温度的任意一个在起动发动机22的必要时间(例如1秒或2秒等)内、下降到可驱动起动电机26程度的温度时，经过发动机22的曲轴位置返回通常的停止位置所需的时间，而再次开始发动机22的转动曲轴。另外，在如此情况下，并不限于在逆变器27的各个开关元件上设置温度传感器，可以具有检测出逆变器27的温度的温度传感器。In the hybridelectric vehicle 20 of the embodiment, the timing of stopping the drive of thestarter motor 26 due to the failure of theengine 22 to turn the crankshaft is performed based on the heating failure signal output from theinverter 27, but it is also possible to detect the failure of the inverter when the inverter is installed. Simultaneously with the temperature sensors of the temperature of each switching element of thecontroller 27, the signals from each temperature sensor are input to theengine ECU 29, and when the temperature detected by any one of the temperature sensors reaches a predetermined temperature set near the upper limit of the allowable temperature, the engine stops. The drive ofstarter motor 26. At this time, instead of the time required to cool the temperature of the switching elements of theinverter 27, it is conceivable that any one of the temperatures detected by each temperature sensor falls within the time necessary to start the engine 22 (for example, 1 second, 2 seconds, etc.), When the temperature drops to a level at which thestarter motor 26 can be driven, the time required for the crankshaft position of theengine 22 to return to the normal stop position elapses, and the cranking of theengine 22 starts again. In addition, in such a case, it is not limited to provide a temperature sensor for each switching element of theinverter 27 , but a temperature sensor that detects the temperature of theinverter 27 may be provided.

在具有如此设有检测出逆变器27的各开关元件的温度或检测出逆变器27的温度的温度传感器的同时、将来自温度传感器的信号向发动机ECU29输入的构成的情况下，在开始起动电机26的驱动之际，可根据逆变器27的温度或开关元件的温度，设定继续转动曲轴的时间。此时的起动处理例程的一例由图4示出。在该变形例的起动处理例程中，首先，输入逆变器27的温度(步骤S300)，根据输入的逆变器27的温度，设定继续转动曲轴的转动曲轴时间Tc(步骤S310)。在本实施例中，转动曲轴时间Tc的设定为：预先通过实验等求出逆变器27的温度和转动曲轴时间Tc的关系，并作为转动曲轴时间设定用图表记忆在ROM74中，给予逆变器27的温度时，导出与记忆的图表相对应的转动曲轴时间Tc而获得。图5示出转动曲轴时间设定用图表的一例。正如图示，在本实施例中，转动曲轴时间Tc从防止因逆变器27的各开关元件的过热所致的破损的观点考虑，设定成逆变器27的温度越高则越短的倾向。In the case of a configuration in which a temperature sensor for detecting the temperature of each switching element of theinverter 27 or a temperature sensor for detecting the temperature of theinverter 27 is provided in this way, and a signal from the temperature sensor is input to theengine ECU 29 , at the beginning When thestarter motor 26 is driven, the time for continuing to rotate the crankshaft can be set according to the temperature of theinverter 27 or the temperature of the switch element. An example of the startup processing routine at this time is shown in FIG. 4 . In the startup processing routine of this modification, first, the temperature of theinverter 27 is input (step S300), and the cranking time Tc for continuing to crank is set based on the input temperature of the inverter 27 (step S310). In this embodiment, the setting of the cranking time Tc is as follows: the relationship between the temperature of theinverter 27 and the cranking time Tc is obtained in advance through experiments, etc., and stored in theROM 74 as a table for setting the cranking time. The temperature of theinverter 27 is obtained by deriving the cranking time Tc corresponding to the memorized map. FIG. 5 shows an example of a graph for setting the cranking time. As shown in the figure, in this embodiment, the cranking time Tc is set to be shorter as the temperature of theinverter 27 is higher, from the viewpoint of preventing damage caused by overheating of each switching element of theinverter 27. tendency.

如此设定转动曲轴时间Tc后，驱动起动电机26，开始发动机22的转动曲轴操作(步骤S320)，从开始转动曲轴后，直到经过转动曲轴时间Tc，判定发动机22的转速Ne是否到达阈值Nset(步骤S330～S350)，如转速Ne到达阈值Nset，开始发动机22的燃料喷射控制或点火控制(步骤S360)，结束本例程，在转速Ne没有到达阈值Nset且经过转动曲轴时间Tc时，进行与图2的起动处理例程中加热失败信号接通时的处理相同的处理，即，停止起动电机26的驱动的同时，使再起动计数器C递增(步骤S370，S380)，通过将再起动计数器C与阈值Cref比较，以转动曲轴的失败不超过容许次数的条件下，等待作为冷却逆变器27的开关元件的温度所需的时间和发动机22的曲轴位置返回到通常的停止位置所需时间中较长一方的时间设定的规定时间的经过(步骤S390，S400)，再次开始起动电机26所致的发动机22的转动曲轴的处理。After the cranking time Tc is set in this way, thestarter motor 26 is driven to start the cranking operation of the engine 22 (step S320). After starting the cranking until the cranking time Tc passes, it is determined whether the rotational speed Ne of theengine 22 reaches the threshold value Nset( Steps S330-S350), if the rotational speed Ne reaches the threshold value Nset, the fuel injection control or ignition control of theengine 22 is started (step S360), and this routine is ended. In the start processing routine of Fig. 2, the processing when the heating failure signal is turned on is the same, that is, while stopping the driving of thestarter motor 26, the restart counter C is incremented (steps S370, S380). Compared with the threshold value Cref, the time required to cool the temperature of the switching element of theinverter 27 and the time required for the crankshaft position of theengine 22 to return to the normal stop position are waited under the condition that the failure to turn the crankshaft does not exceed the allowable number of times. The process of cranking theengine 22 by thestarter motor 26 is restarted upon the lapse of the predetermined time set to the longer one (steps S390, S400).

即使在执行如此变形例的起动处理例程(图4)的混合动力汽车中，也可获得与实施例的混合动力汽车20相同的效果。Even in a hybrid vehicle that executes the startup processing routine ( FIG. 4 ) of such a modified example, the same effects as those of thehybrid vehicle 20 of the embodiment can be obtained.

在实施例的混合动力汽车20或变形例的混合动力汽车中，是由发动机ECU29执行起动处理例程的，但由混合动力用电子控制单元70执行起动处理例程而无妨。In thehybrid vehicle 20 of the embodiment or the hybrid vehicle of the modified example, theengine ECU 29 executes the startup processing routine, but the hybridelectronic control unit 70 may execute the startup processing routine.

在实施例的混合动力汽车20或变形例的混合动力汽车中，设有制动器B1的结构为，将来自发动机22或电机40的动力通过行星齿轮30经差动齿轮64向与驱动轮66a、66b连接的CVT50传递的同时，在停止发动机22的状态下以可只由来自电机40的动力行驶，并且可由发动机22的动力行驶的方式将行星齿轮30的行星齿轮架35或齿圈32与输入轴51连接并解除连接的离合器C1、C2或齿圈32固定到壳体39上，但只要是可在行驶期间或暂时停止之际自动地停止发动机和起动发动机的结构，任何结构均无妨。例如，可如图6所示的变形例的混合动力汽车120那样，适用于使用行星齿轮130的3个旋转要素(太阳齿轮、齿圈、行星齿轮架)中的2个与发动机122的曲轴和连接车轴的驱动轴连接，将可发电的电机MG1安装到行星齿轮130的剩余的旋转要素上，而在驱动轴上装有电机MG2的结构。在这种变形例的混合动力汽车120中，在停止发动机122的状态下，来自蓄电池144的电力通过逆变器142向电机MG2供给，从而可只由来自电机MG2的动力行驶，从该状态起，驱动电机MG1，可转动发动机122的曲轴。因此，通过电机MG1转动发动机122的曲轴之际，为了保护驱动电机MG1的逆变器141的开关元件，可执行图2的起动处理例程或图4的起动处理例程。另外，可如图7所例示的变形例的混合动力汽车220那样，适用于包括具有安装到发动机222的曲轴上的内转子232和安装到与车轴连接的驱动轴上的外转子234，将发动机222的动力的一部分向驱动轴传递的同时、将其余的动力变换为电力的成对转子电动机230；和安装到驱动轴上的电机MG2的结构。即使是在该变形例的混合动力汽车220中，也可在停止发动机22的状态下，通过将来自蓄电池244的电力经逆变器242向电机MG2供给，只由来自电机MG2的动力行驶，从该状态起，可驱动成对转子电动机230，转动发动机222的曲轴。因此，通过成对转子电动机230转动发动机222的曲轴之际，为了保护驱动成对转子电动机230的逆变器241的开关元件，可执行图2的起动处理例程或图4的起动处理例程。In the hybridelectric vehicle 20 of the embodiment or the hybrid electric vehicle of the modified example, the structure of the brake B1 is to transfer the power from theengine 22 or themotor 40 to thedrive wheels 66a, 66b through theplanetary gear 30 through thedifferential gear 64. While the connectedCVT 50 transmits, theplanetary carrier 35 or thering gear 32 of theplanetary gear 30 and the input shaft can be driven only by the power from themotor 40 and can be driven by the power of theengine 22 in the state where theengine 22 is stopped. 51. The clutches C1, C2 or thering gear 32 that are connected and disconnected are fixed to thehousing 39, but any structure is fine as long as the engine can be automatically stopped and started during running or when the engine is temporarily stopped. For example, like the hybrid vehicle 120 of the modified example shown in FIG. The driving shaft connecting the axle is connected, and the motor MG1 capable of generating electricity is attached to the remaining rotating elements of the planetary gear 130, and the structure in which the motor MG2 is mounted on the driving shaft. In the hybrid vehicle 120 of this modified example, in the state where the engine 122 is stopped, the electric power from the battery 144 is supplied to the motor MG2 through the inverter 142, so that it can run only by the power from the motor MG2. , to drive the motor MG1 to rotate the crankshaft of the engine 122 . Therefore, when the crankshaft of engine 122 is rotated by motor MG1, the startup processing routine of FIG. 2 or the startup processing routine of FIG. 4 may be executed in order to protect the switching elements of inverter 141 driving motor MG1. In addition, it can be applied to include an inner rotor 232 attached to the crankshaft of the engine 222 and an outer rotor 234 attached to the drive shaft connected to the axle, as in the hybrid vehicle 220 of the modified example shown in FIG. A paired rotor motor 230 that converts the rest of the power into electric power while transmitting part of the power at 222 to the drive shaft; and a structure of the motor MG2 attached to the drive shaft. Even in the hybrid vehicle 220 of this modified example, by supplying electric power from the battery 244 to the motor MG2 through the inverter 242 with theengine 22 stopped, it is possible to travel only with the power from the motor MG2, and from From this state, the paired rotor motors 230 can be driven to rotate the crankshaft of the engine 222 . Therefore, when the crankshaft of the engine 222 is rotated by the paired rotor motors 230, in order to protect the switching elements of the inverter 241 that drives the paired rotor motors 230, the startup processing routine of FIG. 2 or the startup processing routine of FIG. 4 may be executed. .

在实施例或其变形例中，向驱动轴输出动力的驱动装置装载于汽车上，但也可装载于汽车外的车辆上，可装载于车辆以外的船舶或航空器等移动体上，或装配于工程机械等的不移动的机器或设备中。另外，在实施例或其变形例中，对装载于混合动力汽车上的驱动装置进行了说明，不用说，也包括驱动装置的控制方法的形态。In the embodiment or its modified example, the driving device that outputs power to the drive shaft is mounted on the automobile, but it can also be mounted on a vehicle other than the automobile, can be mounted on a moving body such as a ship or an aircraft other than a vehicle, or be mounted on a vehicle. In non-moving machines or equipment such as construction machinery. In addition, in the embodiment or its modified example, the driving device mounted on the hybrid vehicle has been described, and needless to say, an aspect of the control method of the driving device is also included.

以上，用实施例对本发明的具体实施方式进行了说明，但本发明并不限于这些实施例，不用说，在不脱离本发明的要旨的范围内，可采用各种形态实施。As mentioned above, although the concrete embodiment of this invention was demonstrated using an Example, this invention is not limited to these Examples, It goes without saying that various forms can be implemented within the range which does not deviate from the summary of this invention.

Claims (9)

1. one kind can is characterized in that having with from the power of internal-combustion engine with from the power of the driving motor drive unit to live axle output:

Have can make starting that described I. C. engine crankshaft rotates with motor and this starting of driving with the drive circuit of motor, can make the starting arrangement of this engine starting;

Overheated in order to prevent this drive circuit, the predetermined timing after the starting of described internal-combustion engine begins is carried out the halt instruction device of halt instruction of the starting of this internal-combustion engine; With

When producing the starting order of described internal-combustion engine, control described starting arrangement in the mode of starting this internal-combustion engine, this internal-combustion engine during starts, when producing the starting halt instruction of this internal-combustion engine by described halt instruction device, mode with the starting that stops this internal-combustion engine is controlled described starting arrangement, will from this halt instruction as the abundant described drive circuit of cooling with restarted time of the time set that allows to restart through as one of condition of restarting, control the start-control device of described starting arrangement in the mode of starting this internal-combustion engine.

2. according to the described drive unit of claim 1, it is characterized in that the described time set of restarting recovers common stop position long time in the required time for the described drive circuit of cooling with the crank position of the time that allows to restart and described internal-combustion engine.

3. according to the described drive unit of claim 1, it is characterized in that the described time set of restarting recovers common pressure long time in the required time for the described drive circuit of cooling with the internal pressure of the time that allows to restart and described internal-combustion engine.

4. according to the described drive unit of claim 1, it is characterized in that, temperature-detecting device with temperature of at least a portion that detects described drive circuit, described halt instruction device is: will according to by the timing of the detected temperature of described temperature-detecting device as described predetermined timing, with the device of the halt instruction of the starting of carrying out described internal-combustion engine.

5. according to the described drive unit of claim 4, it is characterized in that, described halt instruction device is: the timing that will detect the temperature more than the set point of temperature by described temperature-detecting device is as described predetermined timing, with the device of the halt instruction of the starting of carrying out described internal-combustion engine.

6. according to the described drive unit of claim 4, it is characterized in that, described halt instruction device is: when having the starting order of described internal-combustion engine, according to setting the rotatable crankshaft time by the detected temperature of described temperature-detecting device, will be from the starting that begins described internal-combustion engine through the timing of this rotatable crankshaft time as described predetermined timing, and the device of halt instruction that carries out the starting of described internal-combustion engine.

7. according to the described drive unit of claim 1, it is characterized in that having and set the drive condition include according to described drive unit and make at least from the part of the power of described internal-combustion engine to the internal combustion engine operation pattern of described live axle output with stop this internal-combustion engine and only will be from the mode setting device of any one pattern of power in a plurality of patterns of the motor drive mode of described live axle output of described motor.

8. a hybrid vehicle is characterized in that, is mounted with according to each described drive unit in the claim 1～7, and described live axle is connected with axletree.

9. the controlling method of a drive unit, this drive unit has: can be to the internal-combustion engine of live axle outputting power; Can be to the driving motor of described live axle outputting power; Have can make starting that described I. C. engine crankshaft rotates with motor and this starting of driving with the drive circuit of motor, can make the starting arrangement of this engine starting; In order to prevent the predetermined timing after the overheated starting at described internal-combustion engine of this drive circuit begins, carry out the halt instruction device of halt instruction of the starting of this internal-combustion engine, this controlling method is characterised in that,

When producing the starting order of described internal-combustion engine, control described starting arrangement in the mode of starting this internal-combustion engine,

This internal-combustion engine during starts, when producing the halt instruction of starting of this internal-combustion engine by described halt instruction device, control described starting arrangement in the mode of the starting that stops this internal-combustion engine,

Will from this halt instruction as the described drive circuit of cooling with restarted time of the time set that allows to restart through as one of condition of restarting, control described starting arrangement in the mode of starting this internal-combustion engine.

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