WO2022266877A1

WO2022266877A1 - Method and apparatus for controlling impact torque of hybrid vehicle

Info

Publication number: WO2022266877A1
Application number: PCT/CN2021/101796
Authority: WO
Inventors: 崔斌; 顾鹏翔
Original assignee: 舍弗勒技术股份两合公司; 崔斌
Priority date: 2021-06-23
Filing date: 2021-06-23
Publication date: 2022-12-29
Also published as: KR20240011168A; DE112021007874T5; CN117377604A

Abstract

A method for controlling an impact torque of a hybrid vehicle. The hybrid vehicle comprises an engine, a driving electric motor, and a clutch, which is arranged between the engine and the driving electric motor. The control method comprises: an acquisition step, which is used for acquiring the torque of an engine; and a first adjustment step, which is used for causing the torque capacity of a clutch to reduce to an impact torque capacity limit value when the torque of the engine exceeds a first torque threshold value, wherein the impact torque capacity limit value is determined on the basis of the intensity of an assembly in a torque transfer path of a hybrid vehicle. Therefore, even if an excessive impact torque occurs, an impact torque which is transferred to an assembly in a torque transfer path via a clutch can be reduced, such that the impact of the excessive impact torque on the assembly can be avoided; furthermore, the corresponding assembly of a hybrid vehicle can be prevented from cracking or breaking due to the excessive impact torque. The present application further relates to an apparatus for controlling an impact torque of a hybrid vehicle.

Description

混合动力汽车的冲击扭矩控制方法及装置Impact torque control method and device for hybrid electric vehicle

技术领域technical field

本发明涉及混合动力汽车技术领域，尤其涉及一种混合动力汽车的冲击扭矩控制方法及装置。The invention relates to the technical field of hybrid electric vehicles, in particular to a method and device for controlling impact torque of a hybrid electric vehicle.

背景技术Background technique

图1是相关技术中的一种混合动力汽车的动力总成的结构示意图。如图1所示，该混合动力汽车包括发动机、P2模块和变速箱(英文：Gearbox)。其中，P2模块包括k0离合器(英文：Clutch)和驱动电机，P2模块位于发动机和变速箱之间，并且k0离合器位于发动机和驱动电机之间。FIG. 1 is a schematic structural diagram of a powertrain of a hybrid electric vehicle in the related art. As shown in FIG. 1 , the hybrid electric vehicle includes an engine, a P2 module and a gearbox (English: Gearbox). Wherein, the P2 module includes a k0 clutch (English: Clutch) and a drive motor, the P2 module is located between the engine and the gearbox, and the k0 clutch is located between the engine and the drive motor.

车辆动力总成用于将内燃机(英文：Internal Combustion Engine，简称：ICE)或驱动电机(EM)输出的扭矩和转动可靠地传递到车辆的驱动轮。在实际应用中，由于例如路面平整度、路面摩擦力和障碍物等驾驶环境的变化或急刹车等驾驶行为的变化，车辆动力总成可能承受冲击扭矩的冲击。冲击扭矩可能对车辆动力总成中的组件造成不利影响，例如使诸如驱动半轴等的相应组件由于过大的冲击扭矩而导致开裂或折断，非常危险。The vehicle powertrain is used to reliably transmit the torque and rotation output by the internal combustion engine (English: Internal Combustion Engine, ICE) or drive motor (EM) to the drive wheels of the vehicle. In practical applications, due to changes in the driving environment such as road roughness, road friction, and obstacles, or changes in driving behavior such as sudden braking, the vehicle powertrain may be subjected to impact torque. The impact torque may have adverse effects on the components in the vehicle powertrain, for example, the corresponding components such as the driving half shaft may be cracked or broken due to the excessive impact torque, which is very dangerous.

相关技术中，采用高硬件冗余设计(以下简称方案a)和带有扭矩限制的滑动元件(以下简称方案b)来确保车辆动力总成免受上述冲击扭矩的影响。其中，方案a将轴和齿轮等组件设计得足够坚固，以承受比车辆正常行驶下的拖动扭矩大得多的冲击扭矩，然而，方案a增加了硬件成本并带来额外的封装重量，并且该冲击扭矩可能导致比正常牵引扭矩高得多的制动扭矩，从而无法实现保护。In the related art, a high hardware redundancy design (hereinafter referred to as scheme a) and a sliding element with torque limitation (hereinafter referred to as scheme b) are adopted to ensure that the vehicle powertrain is not affected by the impact torque mentioned above. Among them, option a designs components such as shafts and gears to be strong enough to withstand the impact torque much larger than the drag torque under normal driving of the vehicle, however, option a increases the hardware cost and brings additional packaging weight, and This shock torque can result in a braking torque much higher than normal traction torque, making protection impossible.

另外，方案b只能在特定的动力总成拓扑中使用，例如具有双离合器的变速箱(英文：Dual Clutch Transmission，简称：DCT)、具有液力变矩器(英文：Torque converter)的变速箱或具有扭矩限制器的双质量飞轮(英文：Double Mass Flywheel，简称：DMF。示例性的，针对图1所示的动力总成结构，由于除k0离合器以外没有其他任何扭矩跟随或滑动控制元件，因此，方案b无法适用于图1所示的动力总成结构。In addition, option b can only be used in a specific powertrain topology, such as a gearbox with a dual clutch (English: Dual Clutch Transmission, referred to as: DCT), a gearbox with a torque converter (English: Torque converter) Or a dual-mass flywheel with a torque limiter (English: Double Mass Flywheel, referred to as: DMF. Exemplary, for the powertrain structure shown in Figure 1, since there is no other torque following or slip control element except the k0 clutch, Therefore, solution b cannot be applied to the powertrain structure shown in Fig. 1 .

因此，相关技术中，可能难以确保车辆动力总成免受冲击扭矩的影响。Therefore, in the related art, it may be difficult to secure the vehicle powertrain from impact torque.

发明内容Contents of the invention

本发明的目的在于克服或至少减轻上述现有技术存在的不足，提供一种混合动力汽车的冲击扭矩控制方法及装置。The purpose of the present invention is to overcome or at least alleviate the shortcomings of the above-mentioned prior art, and to provide a method and device for controlling the impact torque of a hybrid electric vehicle.

根据本发明的一方面，提供了一种混合动力汽车的冲击扭矩控制方法，所述混合动力汽车包括发动机、驱动电机、以及设置在所述发动机和所述驱动电机之间的离合器，所述控制方法包括：获取步骤，用于获取所述发动机的扭矩；第一调整步骤，用于在所述发动机的扭矩超过第一扭矩阈值时，使所述离合器的扭矩容量降低至冲击扭矩容量限制值，其中所述冲击扭矩容量限制值是基于所述混合动力汽车的扭矩传递路径中的组件的强度而确定出的。According to one aspect of the present invention, there is provided a shock torque control method for a hybrid electric vehicle, the hybrid electric vehicle includes an engine, a drive motor, and a clutch arranged between the engine and the drive motor, the control The method includes: an obtaining step for obtaining the torque of the engine; a first adjusting step for reducing the torque capacity of the clutch to a limit value of the impact torque capacity when the torque of the engine exceeds a first torque threshold, Wherein the impact torque capacity limit value is determined based on the strength of components in the torque transmission path of the hybrid electric vehicle.

根据本发明的另一方面，提供了一种混合动力汽车的冲击扭矩控制装置，所述混合动力汽车包括发动机、驱动电机、以及设置在所述发动机和所述驱动电机之间的离合器，所述控制装置包括：获取模块，用于获取所述发动机的扭矩；第一调整模块，用于在所述发动机的扭矩超过第一扭矩阈值时，使所述离合器的扭矩容量降低至冲击扭矩容量限制值，其中所述冲击扭矩容量限制值是基于所述混合动力汽车的扭矩传递路径中的组件的强度而确定出的。According to another aspect of the present invention, a shock torque control device for a hybrid electric vehicle is provided, the hybrid electric vehicle includes an engine, a drive motor, and a clutch arranged between the engine and the drive motor, the The control device includes: an acquisition module, configured to acquire the torque of the engine; a first adjustment module, configured to reduce the torque capacity of the clutch to an impact torque capacity limit value when the engine torque exceeds a first torque threshold , wherein the surge torque capacity limit value is determined based on the strength of components in a torque transmission path of the hybrid electric vehicle.

根据本发明的混合动力汽车的冲击扭矩控制方法及装置，即使发生过大的冲击扭矩，也可通过将离合器的扭矩容量降低至与扭矩传递路径中的组件的强度相对应的冲击扭矩容量限制值，来降低经由离合器传递至扭矩传递路径中的该组件的冲击扭矩，从而可避免过大的冲击扭矩对该组件的冲击，进而能够防止混合动力汽车的诸如驱动半轴等的相应组件由于过大的冲击扭矩而导致开裂或折断。According to the shock torque control method and device of a hybrid electric vehicle of the present invention, even if excessive shock torque occurs, the shock torque capacity limit value corresponding to the strength of components in the torque transmission path can be reduced by reducing the torque capacity of the clutch , to reduce the impact torque transmitted to the component in the torque transmission path via the clutch, so as to avoid the impact of excessive impact torque on the component, and then prevent the corresponding components of the hybrid vehicle such as the drive shaft from being too large cracking or breaking due to impact torque.

根据下面参考附图对示例性实施例的详细说明，本发明的其它特征及方面将变得清楚。Other features and aspects of the present invention will become apparent from the following detailed description of exemplary embodiments with reference to the accompanying drawings.

附图说明Description of drawings

包含在说明书中并且构成说明书的一部分的附图与说明书一起示出了本发明的示例性实施例、特征和方面，并且用于解释本发明的原理。The accompanying drawings, which are incorporated in and constitute a part of the specification, illustrate exemplary embodiments, features, and aspects of the invention and together with the description, serve to explain the principles of the invention.

图1是相关技术中的一种混合动力汽车的动力总成的结构示意图。FIG. 1 is a schematic structural diagram of a powertrain of a hybrid electric vehicle in the related art.

图2是根据一示例性实施例示出的一种混合动力汽车的冲击扭矩控制方法的流程图。Fig. 2 is a flow chart of a method for controlling shock torque of a hybrid electric vehicle according to an exemplary embodiment.

图3是根据一示例性实施例示出的离合器的扭矩容量控制过程图。Fig. 3 is a process diagram showing a torque capacity control process of a clutch according to an exemplary embodiment.

图4是根据一示例性实施例示出的一种混合动力汽车的冲击扭矩控制装置的框图。Fig. 4 is a block diagram of a shock torque control device for a hybrid electric vehicle according to an exemplary embodiment.

具体实施方式detailed description

以下将参考附图详细说明本发明的各种示例性实施例、特征和方面。附图中相同的附图标记表示功能相同或相似的元件。尽管在附图中示出了实施例的各种方面，但是除非特别指出，不必按比例绘制附图。Various exemplary embodiments, features, and aspects of the invention will be described in detail below with reference to the accompanying drawings. The same reference numbers in the figures indicate functionally identical or similar elements. While various aspects of the embodiments are shown in drawings, the drawings are not necessarily drawn to scale unless specifically indicated.

在这里专用的词“示例性”意为“用作例子、实施例或说明性”。这里作为“示例性”所说明的任何实施例不必解释为优于或好于其它实施例。The word "exemplary" is used exclusively herein to mean "serving as an example, embodiment, or illustration." Any embodiment described herein as "exemplary" is not necessarily to be construed as superior or better than other embodiments.

另外，为了更好的说明本发明，在下文的具体实施方式中给出了众多的具体细节。本领域技术人员应当理解，没有某些具体细节，本发明同样可以实施。在另外一些实例中，对于本领域技术人员熟知的方法、手段、元件和电路未作详细描述，以便于凸显本发明的主旨。In addition, in order to better illustrate the present invention, numerous specific details are given in the specific embodiments below. It will be understood by those skilled in the art that the present invention may be practiced without certain of the specific details. In other instances, methods, means, components and circuits well known to those skilled in the art are not described in detail so as to highlight the gist of the present invention.

本发明的混合动力汽车可为HEV或PHEV，该混合动力汽车的动力总成的结构可采用图1所示的结构，具体地，该混合动力汽车包括发动机、驱动电机、以及设置在所述发动机和所述驱动电机之间的离合器，该控制方法可以应用于混合动力汽车的混合动力控制单元(英文：Hybrid Control Unit，简称：HCU)。也就是说，HCU可采用本实施方式中的控制方法来实现混合动力汽车的冲击扭矩的控制。如图2所示，该控制方法可以包括如下步骤。The hybrid electric vehicle of the present invention can be HEV or PHEV, and the structure of the powertrain of this hybrid electric vehicle can adopt the structure shown in Fig. 1, specifically, this hybrid electric vehicle comprises engine, driving motor, and the and the clutch between the drive motor, the control method can be applied to a hybrid control unit (English: Hybrid Control Unit, HCU for short) of a hybrid electric vehicle. That is to say, the HCU can adopt the control method in this embodiment to realize the control of the impact torque of the hybrid electric vehicle. As shown in Fig. 2, the control method may include the following steps.

在步骤S210中，获取发动机的扭矩。In step S210, the torque of the engine is obtained.

在一种可能的实现方式中，可以通过如下方式来获取发动机的扭矩：通过与发动机进行诸如CAN通讯等的通信来自发动机获取发动机的扭矩，示例性的，可实时获取发动机的扭矩。In a possible implementation manner, the torque of the engine may be obtained in the following manner: the torque of the engine may be obtained from the engine through communication such as CAN communication with the engine, for example, the torque of the engine may be obtained in real time.

在步骤S220中，在发动机的扭矩超过第一扭矩阈值时，使离合器的扭矩容量降低至冲击扭矩容量限制值，其中冲击扭矩容量限制值是基于该混合动力汽车的扭矩传递路径中的组件的强度而确定出的。In step S220, when the torque of the engine exceeds the first torque threshold, the torque capacity of the clutch is reduced to an impact torque capacity limit value, wherein the impact torque capacity limit value is based on the strength of components in the torque transmission path of the hybrid electric vehicle And determined.

应能够理解，在发动机的启动过程中可能也存在冲击扭矩，但是该冲击扭矩一般比较小，例如，可采用相关的现有技术来解决该较小的冲击扭矩，换言之，该较小的冲击扭矩处于混合动力汽车能够接受的正常的使用范围内。It should be understood that there may also be a shock torque during the starting process of the engine, but the shock torque is generally relatively small. For example, relevant prior art can be used to solve the small shock torque, in other words, the small shock torque It is within the normal range of use that hybrid vehicles can accept.

然而，如背景技术所述的，在诸如路面平整度、路面摩擦力和障碍物等驾驶环境的变化或急刹车等驾驶行为的变化的场景下，可能存在较大的冲击扭矩，本实施例所要解决的“冲击扭矩”即为前述较大的冲击扭矩。示例性的，在混合动力汽车进入混动模式以正常行驶的过程中，由于诸如路面的变化(例如路上的坑或台阶)等的驾驶环境的变化或诸如急刹车等的驾驶行为的变化，导致混合动力汽车的车轮受到路面的过大的反向扭矩带来的冲击(该反向扭矩与本实施例中的“冲击扭矩”相对应)。However, as described in the background art, in scenarios such as changes in the driving environment such as road surface roughness, road surface friction, and obstacles, or changes in driving behavior such as sudden braking, there may be a relatively large impact torque. The "impact torque" to be solved is the aforementioned larger impact torque. Exemplarily, during the process of the hybrid vehicle entering the hybrid mode for normal driving, due to changes in the driving environment such as changes in the road surface (such as potholes or steps on the road) or changes in driving behavior such as sudden braking, etc., resulting in The wheels of the hybrid vehicle are impacted by the excessive reverse torque of the road surface (the reverse torque corresponds to the "impact torque" in this embodiment).

应能够理解，混合动力汽车的扭矩传递路径中的组件可依次包括发动机、离合器、驱动电机、驱动半轴(例如法兰轴)、变速箱和车轮，因此，冲击扭矩可能被传递至扭矩传递路径中的组件之一的发动机。因此，发动机的扭矩能够在一定程度上反映冲击扭矩。示例性的，在发动机正向输出较大的扭矩、即发动机的扭矩较大时，表示存在前述较大的冲击扭矩。因此，可依据发动机的扭矩是否过大来判断是否存在过大的冲击扭矩。It should be understood that the components in the torque transmission path of a hybrid vehicle may in turn include the engine, clutch, drive motor, drive half shaft (such as a flange shaft), gearbox and wheels, and therefore, shock torque may be transmitted to the torque transmission path One of the components in the engine. Therefore, the torque of the engine can reflect the impact torque to a certain extent. Exemplarily, when the engine is outputting relatively large torque in the forward direction, that is, when the torque of the engine is relatively large, it means that there is the aforementioned large impact torque. Therefore, it can be judged whether there is an excessive impact torque according to whether the torque of the engine is excessive.

基于此，本实施例中，可以将步骤S210中获取到的发动机的扭矩与第一扭矩阈值进行比较，以判断步骤S210中获取到的发动机的扭矩是否超过第一扭矩阈值，从而根据判断的结果来确定发动机的扭矩是否过大，进而判断是否存在过大的冲击扭矩。示例性的，如果发动机的扭矩不超过第一扭矩阈值，则表示发动机的扭矩不过大，不存在过大的冲击扭矩，在该情况下，自然无需采取相应措施来降低冲击扭矩，因此无需执行步骤S220。反之，如果发动机的扭矩超过第一扭矩阈值，则表示发动机的扭矩过大，存在过大的冲击扭矩，在该情况下，如背景技术所述的，过大的冲击扭矩可能会导致混合动力汽车的扭矩传递路径中的诸如驱动半轴等的相应组件开裂或折断，因此需要执行步骤S220。Based on this, in this embodiment, the engine torque obtained in step S210 can be compared with the first torque threshold to determine whether the engine torque obtained in step S210 exceeds the first torque threshold, so that according to the result of the judgment To determine whether the torque of the engine is too large, and then judge whether there is an excessive impact torque. Exemplarily, if the torque of the engine does not exceed the first torque threshold, it means that the torque of the engine is not too large, and there is no excessive impact torque. In this case, it is naturally unnecessary to take corresponding measures to reduce the impact torque, so no steps need to be performed S220. Conversely, if the torque of the engine exceeds the first torque threshold, it means that the torque of the engine is too large, and there is an excessive impact torque. In this case, as described in the background technology, the excessive impact torque may cause the hybrid vehicle to Corresponding components in the torque transmission path such as the driving half shaft are cracked or broken, so step S220 needs to be performed.

在一种可能的实现方式中，第一扭矩阈值可以是根据发动机在冲击扭矩过大的情况下的扭矩来预先设定的值，当然，第一扭矩阈值还可以是经验值。然而，应能够理解，还可以根据实际应用需求采用其它任意合适的方式来设置第一扭矩阈值，只要通过发动机的扭矩超过所设置的第一扭矩阈值能够表征在混合动力汽车的当前行驶下发生了冲击扭矩过大(即，存在过大的冲击扭矩)即可。In a possible implementation manner, the first torque threshold may be a value preset according to the torque of the engine when the impact torque is too large, of course, the first torque threshold may also be an empirical value. However, it should be understood that the first torque threshold can also be set in any other suitable manner according to actual application requirements, as long as the torque passing through the engine exceeds the set first torque threshold, it can represent that a fault has occurred under the current driving of the hybrid vehicle. It is sufficient that the impact torque is too large (that is, there is an excessive impact torque).

本实施例中，意识到在存在过大的冲击扭矩时，可以通过降低离合器的扭矩容量来减小离合器的滑磨量，从而降低经由离合器传递至混合动力汽车的扭矩传递路径中的相应组件的冲击扭矩。In this embodiment, it is realized that when there is an excessive impact torque, the amount of slipping of the clutch can be reduced by reducing the torque capacity of the clutch, thereby reducing the friction of the corresponding components in the torque transmission path of the hybrid vehicle via the clutch. Shock torque.

另外，在发动机的扭矩超过第一扭矩阈值时，表示冲击扭矩过大，若未经处理而直接经由离合器将该过大的冲击扭矩传递至混合动力汽车的扭矩传递路径中的相应组件，则该过大的冲击扭矩所对应的强度可能超过混合动力汽车的扭矩传递路径中的相应组件的强度，从而导致前述组件开裂或折断，因此为降低冲击扭矩而使离合器的扭矩容量要降低至的值即冲击扭矩容量限制值与混合动力汽车的扭矩传递路径中的组件的强度有关，因而可基于混合动力汽车的扭矩传递路径中的组件的强度来确定冲击扭矩容量限制值。In addition, when the torque of the engine exceeds the first torque threshold, it indicates that the impact torque is too large. If the excessive impact torque is directly transmitted to the corresponding components in the torque transmission path of the hybrid vehicle through the clutch without processing, the The strength corresponding to the excessive impact torque may exceed the strength of the corresponding components in the torque transmission path of the hybrid vehicle, causing the aforementioned components to crack or break, so the torque capacity of the clutch should be reduced to a value to reduce the impact torque, namely The shock torque capacity limit value is related to the strength of the components in the torque transmission path of the hybrid electric vehicle, so the shock torque capacity limit value may be determined based on the strength of the components in the torque transmission path of the hybrid electric vehicle.

若发动机的扭矩超过第一扭矩阈值，则表示存在过大的冲击扭矩，相应地，使离合器的扭矩容量降低至基于混合动力汽车的扭矩传递路径中的组件的强度而确定出的冲击扭矩容量限制值，从而降低经由离合器传递至扭矩传递路径中的该组件的冲击扭矩，由此可避免过大的冲击扭矩对该组件的冲击，进而防止该组件由于过大的冲击扭矩而导致开裂或折断。If the engine torque exceeds the first torque threshold, indicating excessive surge torque, the clutch torque capacity is reduced accordingly to the shock torque capacity limit determined based on the strength of the components in the torque transfer path of the hybrid vehicle value, thereby reducing the impact torque transmitted to the component in the torque transmission path via the clutch, thereby avoiding the impact of excessive impact torque on the component, thereby preventing the component from cracking or breaking due to excessive impact torque.

根据本实施例的冲击扭矩控制方法，若所获取到的发动机的扭矩超过第一扭矩阈值，则使离合器的扭矩容量降低至基于混合动力汽车的扭矩传递路径中的组件的强度而确定出的冲击扭矩容量限制值，由此，即使发生过大的冲击扭矩，本实施例也可通过将离合器的扭矩容量降低至与扭矩传递路径中的组件的强度相对应的冲击扭矩容量限制值，来降低经由离合器传递至扭矩传递路径中的该组件的冲击扭矩，从而可避免过大的冲击扭矩对该组件的冲击，进而可防止混合动力汽车的诸如驱动半轴等的相应组件由于过大的冲击扭矩而导致开裂或折断。According to the shock torque control method of the present embodiment, if the acquired engine torque exceeds the first torque threshold, the torque capacity of the clutch is reduced to the shock determined based on the strength of the components in the torque transmission path of the hybrid vehicle. Torque capacity limit value, whereby, even if excessive shock torque occurs, this embodiment can reduce the torque capacity of the clutch by reducing the torque capacity of the clutch to the shock torque capacity limit value corresponding to the strength of the components in the torque transmission path. The clutch transmits the impact torque of the component in the torque transmission path, so as to avoid the impact of the excessive impact torque on the component, and then prevent the corresponding components of the hybrid vehicle such as the drive shaft from being damaged due to the excessive impact torque. result in cracking or breaking.

因此，本实施例利用混合动力汽车的现有结构即可防止混合动力汽车的扭矩传递路径中的组件受到过大的冲击扭矩的冲击而开裂或折断，而无需如背景技术所述的方案a那样需要将诸如轴和齿轮等的组件设计得足够坚固、从而导致硬件成本增减并带来额外的封装重量，因此，相较于方案a，本实施例能够降低硬件成本和封装重量。Therefore, this embodiment utilizes the existing structure of the hybrid vehicle to prevent the components in the torque transmission path of the hybrid vehicle from being cracked or broken due to the impact of excessive impact torque, without the need for solution a as described in the background art Components such as shafts and gears need to be designed to be strong enough, resulting in an increase or decrease in hardware cost and additional packaging weight. Therefore, compared with solution a, this embodiment can reduce hardware cost and packaging weight.

另外，即使是采用不具有带有扭矩限制的滑动元件的动力总成结构的混合动力汽车，采用本实施例的冲击扭矩控制方法仍然能够防止混合动力汽车的扭矩传递路径中的组件受到过大的冲击扭矩的冲击而开裂或折断，因此，相较于背景技术所述的方案b，本实施例的冲击扭矩控制方法的适用性更强，即对混合动力汽车的结构没有过多的限制要求。In addition, even if it is a hybrid electric vehicle that does not have a powertrain structure with torque limiting sliding elements, the impact torque control method of this embodiment can still prevent the components in the torque transmission path of the hybrid electric vehicle from being subjected to excessive force. Therefore, compared with solution b described in the background art, the impact torque control method of this embodiment has stronger applicability, that is, there is no excessive restriction on the structure of the hybrid electric vehicle.

在一种可能的实现方式中，冲击扭矩容量限制值可通过如下方式确定：基于与该混合动力汽车的扭矩传递路径中的组件的强度所对应的该组件能够承受的最大冲击扭矩而确定。In a possible implementation manner, the impact torque capacity limit value may be determined in the following manner: determined based on the maximum impact torque that the component can withstand corresponding to the strength of the component in the torque transmission path of the hybrid electric vehicle.

本实施例中，混合动力汽车的扭矩传递路径中的组件的强度与该组件能够承受的冲击扭矩存在对应关系，若混合动力汽车的扭转传递路径中的冲击扭矩超过该路径中的组件能够承受的最大冲击扭矩，则该组件的强度可能难以承受该冲击扭矩从而可能开裂或折断，因此可以根据该组件的强度所对应的该最大冲击扭矩来确定冲击扭矩容量限制值。In this embodiment, there is a corresponding relationship between the strength of the components in the torque transmission path of the hybrid electric vehicle and the impact torque that the components can withstand. If the impact torque in the torsion transmission path of the hybrid electric vehicle exceeds The maximum impact torque, the strength of the component may be difficult to withstand the impact torque and may crack or break, so the limit value of impact torque capacity can be determined according to the maximum impact torque corresponding to the strength of the component.

在一种可能的实现方式中，若混合动力汽车的扭转传递路径中仅存在一个组件，则可基于该组件的强度所对应的该组件能够承受的最大冲击扭矩来确定冲击扭矩容量限制值；若混合动力汽车的扭转传递路径中存在多个组件，则可基于该多个组件彼此的最大冲击扭矩并采用诸如加法、加权、方差、均方差、平均值等的相应算法来确定冲击扭矩容量限制值。例如，可基于该多个组件的平均最大冲击扭矩来确定冲击扭矩容量限制值，或者基于该多个组件的最大冲击扭矩中的最小值来确定冲击扭矩容量限制值，示例性的，可将冲击扭矩容量限制值设置为比该多个最大冲击扭矩中的最小值小的值。In a possible implementation, if there is only one component in the torsion transmission path of the hybrid electric vehicle, the impact torque capacity limit value can be determined based on the maximum impact torque that the component can withstand corresponding to the strength of the component; if If there are multiple components in the torsional transmission path of a hybrid vehicle, the impact torque capacity limit value can be determined based on the maximum impact torque of the multiple components and using corresponding algorithms such as addition, weighting, variance, mean square error, and average value . For example, the impact torque capacity limit value can be determined based on the average maximum impact torque of the multiple components, or the impact torque capacity limit value can be determined based on the minimum value among the maximum impact torques of the multiple components. Exemplarily, the impact can be The torque capacity limit value is set to a value smaller than the minimum value of the plurality of maximum impact torques.

在一种可能的实现方式中，所述冲击扭矩容量限制值是基于所述混合动力汽车的扭矩传递路径中的第一组件的强度所对应的该第一组件能够承受的最大冲击扭矩而确定出的，其中所述第一组件的强度所对应的该第一组件能够承受的最大冲击扭矩小于所述扭矩传递路径中的其它组件的强度所对应的该其它组件能够承受的最大冲击扭矩。In a possible implementation manner, the impact torque capacity limit value is determined based on the maximum impact torque that the first component can bear corresponding to the strength of the first component in the torque transmission path of the hybrid vehicle Wherein the strength of the first component corresponds to the maximum impact torque that the first component can withstand is smaller than the maximum impact torque that other components in the torque transmission path correspond to the strength of the other components.

本实施例中，混合动力汽车的扭矩传递路径中的各组件具有相应的强度，并且各组件的强度对应有该组件能够承受的最大冲击扭矩，其中，如果组件能够承受的最大冲击扭矩大于存在的冲击扭矩，则该冲击扭矩不会导致该组件开裂或折断，相应地，如果组件能够承受的最大冲击扭矩不大于存在的冲击扭矩，则该冲击扭矩可能会导致该组件开裂或折断。In this embodiment, each component in the torque transmission path of the hybrid vehicle has a corresponding strength, and the strength of each component corresponds to the maximum impact torque that the component can withstand, wherein, if the maximum impact torque that the component can withstand is greater than the existing The impact torque will not cause the component to crack or break, and correspondingly, if the maximum impact torque that the component can withstand is not greater than the existing impact torque, the impact torque may cause the component to crack or break.

如果最大冲击扭矩最小的组件(可对应于上述“第一组件”)的最大冲击扭矩大于该扭矩传递路径中的冲击扭矩，则该扭矩传递路径中的其它各个组件的最大冲击扭矩应均大于该扭矩传递路径中的冲击扭矩，因此扭矩传递路径中的所有组件均不会受到冲击扭矩的冲击而导致开裂或折断；相应地，如果最大冲击扭矩最小的组件的最大冲击扭矩不大于该扭矩传递路径中的冲击扭矩，则至少该扭矩传递路径中的最大冲击扭矩最小的组件会受到冲击扭矩的冲击而导致开裂或折断。因此，为了防止混合动力汽车的扭矩传递路径中的相应组件由于过大的冲击扭矩而导致开裂或折断，可以依据扭矩传递路径中的最大冲击扭矩最小的组件的最大冲击扭矩(即，扭矩传递路径中的多个组件的多个最大冲击扭矩中的最小值)来确定冲击扭矩容量限制值，并在发动机的扭矩大于第一扭矩阈值时使离合器的扭矩容量降低至基于最小的最大冲击扭矩所确定出的冲击扭矩容量限制值。If the maximum impact torque of the component with the smallest maximum impact torque (may correspond to the "first component") is greater than the impact torque in the torque transmission path, then the maximum impact torque of other components in the torque transmission path should be greater than the maximum impact torque The impact torque in the torque transmission path, so all components in the torque transmission path will not be impacted by the impact torque to cause cracking or breaking; correspondingly, if the maximum impact torque of the component with the smallest maximum impact torque is not greater than the torque transmission path If there is an impact torque in the torque transmission path, at least the component with the smallest maximum impact torque in the torque transmission path will be impacted by the impact torque and cause cracking or breaking. Therefore, in order to prevent the corresponding components in the torque transmission path of the hybrid vehicle from cracking or breaking due to excessive impact torque, the maximum impact torque of the component with the smallest maximum impact torque in the torque transmission path can be used (that is, the torque transmission path The minimum value of a plurality of maximum impact torques of a plurality of components in the engine) is used to determine the impact torque capacity limit value, and when the torque of the engine is greater than the first torque threshold value, the torque capacity of the clutch is reduced to be determined based on the smallest maximum impact torque The limit value of shock torque capacity.

示例性的，可确定扭矩传递路径中的各组件的强度能够承受的最大冲击扭矩，可采用相关算法来确定最小的最大冲击扭矩，可将具有最小的最大冲击扭矩的组件确定为第一组件，并基于该第一组件的强度所对应的最大冲击扭矩来确定冲击扭矩容量限制值，例如可将冲击扭矩容量限制值设置为比第一组件的强度所对应的最大冲击扭矩小的值。Exemplarily, the maximum impact torque that the strength of each component in the torque transmission path can bear can be determined, a correlation algorithm can be used to determine the smallest maximum impact torque, and the component with the smallest maximum impact torque can be determined as the first component, The impact torque capacity limit value is determined based on the maximum impact torque corresponding to the strength of the first component. For example, the impact torque capacity limit value can be set to a value smaller than the maximum impact torque corresponding to the strength of the first component.

在一种可能的实现方式中，发动机的扭矩在离合器的扭矩容量的降低的作用下而降低，进一步的，上述控制方法还可以包括：在发动机的扭矩低于第二扭矩阈值时，使离合器的扭矩容量增加至离合器完全接合时能够传递的最大扭矩容量，其中第二扭矩阈值低于第一扭矩阈值。In a possible implementation manner, the torque of the engine is reduced due to the reduction of the torque capacity of the clutch. Further, the above control method may further include: when the torque of the engine is lower than the second torque threshold, making the torque capacity of the clutch The torque capacity is increased to a maximum torque capacity transferable when the clutch is fully engaged, wherein the second torque threshold is lower than the first torque threshold.

本实施例中，在通过步骤S220使发动机的扭矩降低的过程中，可以实时监测发动机的扭矩是否过低从而影响驾驶性能，示例性的，可以监测发动机的扭矩是否低于第二扭矩阈值，若低于，则表示发动机的扭矩处于低扭矩范围，可能影响驾驶性能，在该情况下，考虑到发动机的扭矩可能受到离合器的扭矩容量的影响，因此可以通过增加离合器的扭矩容量来增加发动机的扭矩。因此，可通过使离合器的扭矩容量增加至离合器完全接合时能够传递的最大扭矩容量，来使发动机的扭矩增加至第二扭矩阈值以上，从而可实现良好的驾驶性能。In this embodiment, in the process of reducing the torque of the engine through step S220, it can be monitored in real time whether the torque of the engine is too low to affect drivability. Exemplarily, it can be monitored whether the torque of the engine is lower than the second torque threshold, if If it is lower than that, it means that the torque of the engine is in the low torque range, which may affect the driving performance. In this case, considering that the torque of the engine may be affected by the torque capacity of the clutch, the torque of the engine can be increased by increasing the torque capacity of the clutch . Therefore, by increasing the torque capacity of the clutch to the maximum torque capacity that can be transmitted when the clutch is fully engaged, the torque of the engine can be increased above the second torque threshold, thereby achieving good drivability.

在一种可能的实现方式中，步骤S220可以包括：在自发动机的扭矩超过第一扭矩阈值时起至发动机的扭矩在离合器的扭矩容量的降低的作用下而降低至第二扭矩阈值为止的时间段内，通过将离合器的执行器调整至基于冲击扭矩容量限制值而确定出的第一位置，来控制离合器的扭矩容量以使离合器的扭矩容量降低至冲击扭矩容量限制值。In a possible implementation, step S220 may include: the time from when the torque of the engine exceeds the first torque threshold to when the torque of the engine decreases to the second torque threshold due to the reduction of the torque capacity of the clutch In the segment, the torque capacity of the clutch is controlled to reduce the torque capacity of the clutch to the surge torque capacity limit value by adjusting the actuator of the clutch to a first position determined based on the surge torque capacity limit value.

在一种可能的实现方式中，在发动机的扭矩低于第二扭矩阈值时，使离合器的扭矩容量增加至离合器完全接合时能够传递的最大扭矩容量可以包括：自发动机的扭矩降低至第二扭矩阈值时起，通过将离合器的执行器调整至基于最大扭矩容量而确定出的第二位置，来控制离合器的扭矩容量以使离合器的扭矩容量增加至最大扭矩容量。In a possible implementation manner, when the torque of the engine is lower than the second torque threshold, increasing the torque capacity of the clutch to the maximum torque capacity that can be transmitted when the clutch is fully engaged may include: reducing the torque of the engine to the second torque From the threshold, the torque capacity of the clutch is controlled to increase the torque capacity of the clutch to the maximum torque capacity by adjusting the actuator of the clutch to a second position determined based on the maximum torque capacity.

本实施例中，离合器的执行器为弹性元件制成，用于调整离合器的扭矩容量。若执行器处于上述第一位置，则离合器的扭矩容量处于冲击扭矩容量限制值，相应地，若执行器处于上述第二位置，则离合器的扭矩容量处于最大扭矩容量。In this embodiment, the actuator of the clutch is made of an elastic element, which is used to adjust the torque capacity of the clutch. If the actuator is in the above-mentioned first position, the torque capacity of the clutch is at the impact torque capacity limit value; correspondingly, if the actuator is in the above-mentioned second position, the torque capacity of the clutch is in the maximum torque capacity.

图3示出离合器的执行器的位置与冲击扭矩的关系示意图，其中，横轴为执行器的位置，纵轴为执行器受到的来源于离合器的膜片弹簧强度以及***刚度的轴向负载，ILP位置表示上述第一位置，PLP位置表示上述第二位置。表1描述了在通过调整执行器的位置来调整冲击扭矩的过程中的发动机的扭矩和执行器的位置的各个状态。以下结合图3和表1来详细说明通过调整执行器的位置来控制冲击扭矩的实现过程。Figure 3 shows a schematic diagram of the relationship between the position of the actuator of the clutch and the impact torque, wherein the horizontal axis is the position of the actuator, and the vertical axis is the axial load that the actuator receives from the strength of the diaphragm spring of the clutch and the stiffness of the system, The ILP position represents the above-mentioned first position, and the PLP position represents the above-mentioned second position. Table 1 describes various states of the torque of the engine and the position of the actuator in the process of adjusting the shock torque by adjusting the position of the actuator. The implementation process of controlling the impact torque by adjusting the position of the actuator will be described in detail below in conjunction with FIG. 3 and Table 1 .

需要说明的是，由于上述轴向负载与本发明的技术方案不相关，因此可以忽略，在该情况下，图3可以去掉纵轴从而转换为一条直线。It should be noted that since the above-mentioned axial load is irrelevant to the technical solution of the present invention, it can be ignored. In this case, the vertical axis of FIG. 3 can be converted into a straight line by removing the vertical axis.

在状态1中，发动机的扭矩较低，执行器处于预压紧状态、即位于PLP位置，离合器可以传递最大扭矩容量。在状态1.1中，发动机的扭矩超过第一扭矩阈值，发动机的扭矩处于诸如软件等定义的高扭矩范围。在状态1.5中，执行器被调整至ILP位置以使得离合器的扭矩容量降低至表示冲击扭矩容量限制值的X Nm。In state 1, the torque of the engine is low, the actuator is in the preloaded state, that is, in the PLP position, and the clutch can transmit the maximum torque capacity. In state 1.1, the torque of the engine exceeds a first torque threshold, the torque of the engine is in a high torque range defined, for example by software. In state 1.5, the actuator is adjusted to the ILP position so that the torque capacity of the clutch is reduced to X Nm representing the impact torque capacity limit.

在状态2中，发动机的扭矩持续处于高扭矩范围，执行器位于ILP位置，离合器的扭矩容量一直处于X Nm以内，其对应于冲击扭矩保护模式。在状态2.1中，发动机的扭矩降低至第二扭矩阈值，发动机的扭矩处于诸如软件等定义的低扭矩范围。在状态2.5中，执行器被调整至PLP位置以使得离合器传递最大扭矩容量。在状态3中，发动机的扭矩处于低扭矩范围，执行器位于PLP位置，发动机的扭矩持续增加。In state 2, the torque of the engine is continuously in the high torque range, the actuator is in the ILP position, and the torque capacity of the clutch is always within X Nm, which corresponds to the impact torque protection mode. In state 2.1, the torque of the engine is reduced to a second torque threshold, and the torque of the engine is in a low torque range defined, for example, by software. In state 2.5, the actuator is adjusted to the PLP position so that the clutch delivers maximum torque capacity. In state 3, the engine torque is in the low torque range, the actuator is in the PLP position, and the engine torque continues to increase.

表1Table 1

根据上述描述可知，可基于发动机的扭矩所处的状态来控制执行器的位置在PLP位置和ILP位置之间切换，从而控制离合器的扭矩容量以控制发动机的扭矩。According to the above description, the position of the actuator can be controlled to switch between the PLP position and the ILP position based on the state of the engine torque, so as to control the torque capacity of the clutch to control the engine torque.

应能够理解，上述通过调整离合器的执行器的位置来控制离合器的扭矩容量的方式仅为示例，本实施例不限于此，本领域技术人员应可采用其它相关技术来实现离合器的扭矩容量的控制。It should be understood that the above method of controlling the torque capacity of the clutch by adjusting the position of the actuator of the clutch is only an example, and this embodiment is not limited thereto, and those skilled in the art can use other related technologies to realize the control of the torque capacity of the clutch .

图4是根据一示例性实施例示出的一种混合动力汽车的冲击扭矩控制装置的框图，该混合动力汽车可为HEV或PHEV，该混合动力汽车包括发动机、驱动电机、以及设置在所述发动机和所述驱动电机之间的离合器。如图4所示，该控制装置400可以包括：获取模块410和第一调整模块420。Fig. 4 is a block diagram of a shock torque control device for a hybrid electric vehicle according to an exemplary embodiment. The hybrid electric vehicle can be HEV or PHEV, and the hybrid electric vehicle includes an engine, a drive motor, and a and the clutch between the drive motor. As shown in FIG. 4 , the control device 400 may include: an acquisition module 410 and a first adjustment module 420 .

获取模块410，用于获取所述发动机的扭矩；第一调整模块420，与获取模块410连接，用于在所述发动机的扭矩超过第一扭矩阈值时，使所述离合器的扭矩容量降低至冲击扭矩容量限制值，其中所述冲击扭矩容量限制值是基于所述混合动力汽车的扭矩传递路径中的组件的强度而确定出的。An acquisition module 410, configured to acquire the torque of the engine; a first adjustment module 420, connected to the acquisition module 410, configured to reduce the torque capacity of the clutch to an impact when the torque of the engine exceeds a first torque threshold A torque capacity limit value, wherein the surge torque capacity limit value is determined based on the strength of components in a torque transmission path of the hybrid electric vehicle.

在一种可能的实现方式中，所述发动机的扭矩在所述离合器的扭矩容量的降低的作用下而降低，所述控制装置400还包括：第二调整模块(未示出)，用于在所述发动机的扭矩低于第二扭矩阈值时，使所述离合器的扭矩容量增加至所述离合器完全接合时能够传递的最大扭矩容量，其中所述第二扭矩阈值低于所述第一扭矩阈值。In a possible implementation manner, the torque of the engine is reduced due to the reduction of the torque capacity of the clutch, and the control device 400 further includes: a second adjustment module (not shown), configured to increasing the torque capacity of the clutch to a maximum torque capacity transferable when the clutch is fully engaged when the engine torque is below a second torque threshold, wherein the second torque threshold is lower than the first torque threshold .

在一种可能的实现方式中，所述第一调整模块420被配置为：在自所述发动机的扭矩超过所述第一扭矩阈值时起至所述发动机的扭矩在所述离合器的扭矩容量的降低的作用下而降低至所述第二扭矩阈值为止的时间段内，通过将所述离合器的执行器调整至基于所述冲击扭矩容量限制值而确定出的第一位置，来控制所述离合器的扭矩容量以使所述离合器的扭矩容量降低至所述冲击扭矩容量限制值。In a possible implementation manner, the first adjustment module 420 is configured to: when the torque of the engine exceeds the first torque threshold, the torque of the engine exceeds the torque capacity of the clutch controlling the clutch by adjusting an actuator of the clutch to a first position determined based on the surge torque capacity limit for a period of time until the second torque threshold is lowered under the effect of the reduction torque capacity of the clutch to reduce the torque capacity of the clutch to the impact torque capacity limit value.

在一种可能的实现方式中，所述第二调整模块被配置为：自所述发动机的扭矩降低至所述第二扭矩阈值时起，通过将所述离合器的执行器调整至基于所述最大扭矩容量而确定出的第二位置，来控制所述离合器的扭矩容量以使所述离合器的扭矩容量增加至所述最大扭矩容量。In a possible implementation manner, the second adjustment module is configured to: after the torque of the engine decreases to the second torque threshold, by adjusting the actuator of the clutch to The torque capacity of the clutch is controlled to increase the torque capacity of the clutch to the maximum torque capacity.

在一种可能的实现方式中，所述冲击扭矩容量限制值是基于所述混合动力汽车的扭矩传递路径中的第一组件的强度所对应的该第一组件能够承受的最大冲击扭矩而确定出的，其中所述第一组件的强度所对应的该第一组件能够承受的最大冲击扭矩小于所述混合动力汽车的扭矩传递路径中的其它组件的强度所对应的该其它组件能够承受的最大冲击扭矩。In a possible implementation manner, the impact torque capacity limit value is determined based on the maximum impact torque that the first component can bear corresponding to the strength of the first component in the torque transmission path of the hybrid vehicle Wherein the strength of the first component corresponds to the maximum impact torque that the first component can withstand is smaller than the maximum impact that other components in the torque transmission path of the hybrid vehicle correspond to the strength of the other components that can withstand torque.

关于上述实施例中的装置，其中各个模块执行操作的具体方式已经在有关该方法的实施例中进行了详细描述，此处将不做详细阐述说明。Regarding the apparatus in the foregoing embodiments, the specific manner in which each module executes operations has been described in detail in the embodiments related to the method, and will not be described in detail here.

以上所述，仅为本发明的具体实施方式，但本发明的保护范围并不局限于此，任何熟悉本技术领域的技术人员在本发明揭露的技术范围内，可轻易想到变化或替换，都应涵盖在本发明的保护范围之内。因此，本发明的保护范围应以所述权利要求的保护范围为准。The above is only a specific embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Anyone skilled in the art can easily think of changes or substitutions within the technical scope disclosed in the present invention. Should be covered within the protection scope of the present invention. Therefore, the protection scope of the present invention should be determined by the protection scope of the claims.

Claims

一种混合动力汽车的冲击扭矩控制方法，所述混合动力汽车包括发动机、驱动电机、以及设置在所述发动机和所述驱动电机之间的离合器，其特征在于，所述控制方法包括：A method for controlling impact torque of a hybrid electric vehicle, the hybrid electric vehicle comprising an engine, a drive motor, and a clutch arranged between the engine and the drive motor, wherein the control method comprises:

获取步骤，用于获取所述发动机的扭矩；an obtaining step for obtaining the torque of the engine;

第一调整步骤，用于在所述发动机的扭矩超过第一扭矩阈值时，使所述离合器的扭矩容量降低至冲击扭矩容量限制值，其中所述冲击扭矩容量限制值是基于所述混合动力汽车的扭矩传递路径中的组件的强度而确定出的。A first adjusting step, for reducing the torque capacity of the clutch to a surge torque capacity limit value when the torque of the engine exceeds a first torque threshold value, wherein the surge torque capacity limit value is based on the hybrid electric vehicle determined by the strength of the components in the torque transmission path.
根据权利要求1所述的控制方法，其特征在于，The control method according to claim 1, characterized in that,

所述发动机的扭矩在所述离合器的扭矩容量的降低的作用下而降低，the torque of the engine is reduced by a reduction in the torque capacity of the clutch,

所述控制方法还包括：The control method also includes:

第二调整步骤，用于在所述发动机的扭矩低于第二扭矩阈值时，使所述离合器的扭矩容量增加至所述离合器完全接合时能够传递的最大扭矩容量，其中所述第二扭矩阈值低于所述第一扭矩阈值。A second adjusting step for increasing the torque capacity of the clutch to a maximum torque capacity transferable when the clutch is fully engaged when the engine torque is below a second torque threshold, wherein the second torque threshold Below the first torque threshold.
根据权利要求2所述的控制方法，其特征在于，所述第一调整步骤包括：The control method according to claim 2, wherein the first adjusting step comprises:

在自所述发动机的扭矩超过所述第一扭矩阈值时起至所述发动机的扭矩在所述离合器的扭矩容量的降低的作用下而降低至所述第二扭矩阈值为止的时间段内，通过将所述离合器的执行器调整至基于所述冲击扭矩容量限制值而确定出的第一位置，来控制所述离合器的扭矩容量以使所述离合器的扭矩容量降低至所述冲击扭矩容量限制值。During the period from when the torque of the engine exceeds the first torque threshold to when the torque of the engine is reduced to the second torque threshold by a reduction in torque capacity of the clutch, by adjusting the actuator of the clutch to a first position determined based on the surge torque capacity limit value to control the torque capacity of the clutch to reduce the clutch torque capacity to the surge torque capacity limit value .
根据权利要求2所述的控制方法，其特征在于，所述第二调整步骤包括：The control method according to claim 2, wherein the second adjusting step comprises:

自所述发动机的扭矩降低至所述第二扭矩阈值时起，通过将所述离合器的执行器调整至基于所述最大扭矩容量而确定出的第二位置，来控制所述离合器的扭矩容量以使所述离合器的扭矩容量增加至所述最大扭矩容量。controlling the torque capacity of the clutch by adjusting the actuator of the clutch to a second position determined based on the maximum torque capacity from when the torque of the engine decreases to the second torque threshold The torque capacity of the clutch is increased to the maximum torque capacity.
根据权利要求1至4中任一项所述的控制方法，其特征在于，The control method according to any one of claims 1 to 4, characterized in that,

所述冲击扭矩容量限制值是基于所述混合动力汽车的扭矩传递路径中的第一组件的强度所对应的该第一组件能够承受的最大冲击扭矩而确定出的，其中所述第一组件的强度所对应的该第一组件能够承受的最大冲击扭矩小于所述扭矩传递路径中的其它组件的强度所对应的该其它组件能够承受的最大冲击扭矩。The impact torque capacity limit value is determined based on the maximum impact torque that the first component can bear corresponding to the strength of the first component in the torque transmission path of the hybrid electric vehicle, wherein the first component The maximum impact torque that the first component can bear according to the strength is smaller than the maximum impact torque that other components can bear according to the strength of other components in the torque transmission path.
一种混合动力汽车的冲击扭矩控制装置，所述混合动力汽车包括发动机、驱动电机、以及设置在所述发动机和所述驱动电机之间的离合器，其特征在于，所述控制装置包括：A shock torque control device for a hybrid electric vehicle, the hybrid electric vehicle includes an engine, a drive motor, and a clutch arranged between the engine and the drive motor, wherein the control device includes:

获取模块，用于获取所述发动机的扭矩；an acquisition module, configured to acquire the torque of the engine;

第一调整模块，用于在所述发动机的扭矩超过第一扭矩阈值时，使所述离合器的扭矩容量降低至冲击扭矩容量限制值，其中所述冲击扭矩容量限制值是基于所述混合动力汽车的扭矩传递路径中的组件的强度而确定出的。A first adjustment module, configured to reduce the torque capacity of the clutch to an impact torque capacity limit value when the torque of the engine exceeds a first torque threshold, wherein the impact torque capacity limit value is based on the hybrid electric vehicle determined by the strength of the components in the torque transmission path.
根据权利要求6所述的控制装置，其特征在于，The control device according to claim 6, characterized in that,

所述发动机的扭矩在所述离合器的扭矩容量的降低的作用下而降低，the torque of the engine is reduced by a reduction in the torque capacity of the clutch,

所述控制装置还包括：The control device also includes:

第二调整模块，用于在所述发动机的扭矩低于第二扭矩阈值时，使所述离合器的扭矩容量增加至所述离合器完全接合时能够传递的最大扭矩容量，其中所述第二扭矩阈值低于所述第一扭矩阈值。A second adjustment module, configured to increase the torque capacity of the clutch to a maximum torque capacity that can be transmitted when the clutch is fully engaged when the torque of the engine is lower than a second torque threshold, wherein the second torque threshold Below the first torque threshold.
根据权利要求7所述的控制装置，其特征在于，所述第一调整模块被配置为：The control device according to claim 7, wherein the first adjustment module is configured to:

在自所述发动机的扭矩超过所述第一扭矩阈值时起至所述发动机的扭矩在所述离合器的扭矩容量的降低的作用下而降低至所述第二扭矩阈值为止的时间段内，通过将所述离合器的执行器调整至基于所述冲击扭矩容量限制值而确定出的第一位置，来控制所述离合器的扭矩容量以使所述离合器的扭矩容量降低至所述冲击扭矩容量限制值。During the period from when the torque of the engine exceeds the first torque threshold to when the torque of the engine is reduced to the second torque threshold by a reduction in torque capacity of the clutch, by adjusting the actuator of the clutch to a first position determined based on the surge torque capacity limit value to control the torque capacity of the clutch to reduce the clutch torque capacity to the surge torque capacity limit value .
根据权利要求7所述的控制装置，其特征在于，所述第二调整模块被配置为：The control device according to claim 7, wherein the second adjustment module is configured to:

自所述发动机的扭矩降低至所述第二扭矩阈值时起，通过将所述离合器的执行器调整至基于所述最大扭矩容量而确定出的第二位置，来控制所述离合器的扭矩容量以使所述离合器的扭矩容量增加至所述最大扭矩容量。controlling the torque capacity of the clutch by adjusting the actuator of the clutch to a second position determined based on the maximum torque capacity from when the torque of the engine decreases to the second torque threshold The torque capacity of the clutch is increased to the maximum torque capacity.
根据权利要求6至9中任一项所述的控制装置，其特征在于，A control device according to any one of claims 6 to 9, characterized in that

所述冲击扭矩容量限制值是基于所述混合动力汽车的扭矩传递路径中的第一组件的强度所对应的该第一组件能够承受的最大冲击扭矩而确定出的，其中所述第一组件的强度所对应的该第一组件能够承受的最大冲击扭矩小于所述扭矩传递路径中的其它组件的强度所对应的该其它组件能够承受的最大冲击扭矩。The limit value of impact torque capacity is determined based on the maximum impact torque that the first component can bear corresponding to the strength of the first component in the torque transmission path of the hybrid electric vehicle, wherein the first component The maximum impact torque that the first component can bear according to the strength is smaller than the maximum impact torque that other components can bear according to the strength of other components in the torque transmission path.