CN113212418B - Planetary hybrid system working mode arbitration method - Google Patents

Abstract

The invention discloses a method for arbitrating the working mode of a planetary hybrid system, which comprises the following steps: receiving an engine state message sent by an engine controller in the planetary hybrid system through a vehicle control unit in the planetary hybrid system to arbitrate the actual working state of the engine; performing arbitration of the driver demand working mode through the switching condition state of the driver demand working mode; and obtaining the working mode of the planetary hybrid system according to the actual working state of the engine and the working mode required by the driver by joint arbitration. The power system of the invention has more comprehensive mode division, relates to an inactive mode, a neutral mode, a driving mode and a failure mode, and covers the whole process from the condition that an engine of the whole vehicle is not started to the condition that the vehicle is driven to run normally and then to the condition that the vehicle is stopped.

Description

Planetary hybrid system working mode arbitration method

Technical Field

The invention relates to the technical field of hybrid electric vehicles, in particular to a planetary hybrid system working mode arbitration method.

Background

The planetary hybrid system can decouple the rotating speed and the torque of the engine, so that the working point of the engine is optimized through a control strategy, and the fuel economy is improved. Compared with the traditional power system, the planetary hybrid system structurally increases the components such as a motor, a power battery and a planetary gear train, so that the control of the whole vehicle power system becomes complicated, and in order to facilitate the energy management and the torque distribution of the whole vehicle power system, the working mode of the whole vehicle power system needs to be arbitrated according to the operation input of a driver and the running states of the components.

Currently, there are few researches on arbitration of the operating modes of the planetary hybrid system, and the mode division is not comprehensive. Patent publication No. CN108394403A discloses a mode switching control method, which aims at a double-clutch power split type hybrid power system and performs driving mode and braking mode switching control according to a characteristic curve of a three-power source in the power system, an accelerator pedal, a brake pedal and an SOC signal. Patent publication No. CN109624982A discloses a method for selecting a drive mode of a plug-in hybrid electric vehicle, which selects modes among HEV, EV, HEV-SPORT (power mode), pure oil limping and pure electric limping according to state information of the vehicle speed, fuel conditions, a battery, a motor and DCDC. The power system modes related in the two mode selection switching control methods are only aiming at the driving or braking state, the states of neutral gear, parking and the like are not considered, and the mode division is not comprehensive.

Disclosure of Invention

The embodiment of the application provides a method for arbitrating working modes of a planetary hybrid system, so as to at least solve the problems that in the related art, arbitration research on working modes of the planetary hybrid system is less, and mode division is not comprehensive.

The embodiment of the application provides a method for arbitrating working modes of a planetary hybrid system, which comprises the following steps:

arbitration step of actual working state of the engine: receiving an engine state message sent by an engine controller in a planetary hybrid system through a vehicle control unit in the planetary hybrid system to arbitrate the actual working state of the engine;

driver demand work mode arbitration step: arbitrating the driver demand working mode through the switching condition state of the driver demand working mode;

arbitration step of system working mode: and obtaining the working mode of the planetary hybrid system according to the actual working state of the engine and the driver demand working mode by joint arbitration.

The arbitration method for the operating mode of the planetary hybrid system, wherein the engine status message includes: fault state, start state, running state, stop stage state, running end state.

The arbitration method for the operating modes of the planetary hybrid system comprises the following steps of starting the engine, operating the engine, stopping the engine in a phase and stopping the engine.

The arbitration method for the operating mode of the planetary hybrid system, wherein the arbitration for the operating mode required by the driver further comprises:

judging the mode switching condition state: and judging the state of the switching condition of the work mode required by the driver through the operation input signal of the driver.

The arbitration method for the working mode of the planetary hybrid system, wherein the switching condition state of the working mode required by the driver comprises: the method comprises the following steps of switching an inactive mode to an active mode condition state, switching an active mode to an inactive mode condition state, switching a neutral mode to a driving mode condition state, switching a driving mode to a neutral mode condition state and switching a neutral engine operation requirement condition state.

The method for arbitrating the operating modes of a planetary hybrid system as described above, wherein the driver demand operating modes comprise an inactive mode and an active mode, wherein the active modes comprise a neutral engine off mode, a neutral engine on mode and a drive mode.

The method for arbitrating the operating modes of the planetary hybrid system comprises a fault mode, an inactive mode and an active mode, wherein the active mode comprises a neutral engine off mode, an engine start mode, a neutral engine running mode, a driving mode and an engine stop phase mode.

The arbitration method for the working mode of the planetary hybrid system comprises the following steps:

a fault mode judging step: judging whether a power system has a fault, if so, entering a working mode of the planetary hybrid system into a fault mode; and if not, entering the non-activation mode.

The arbitration method for the working mode of the planetary hybrid system comprises the following steps:

and an inactive mode judging step: in the non-activation mode, when the driver demand working mode is the activation mode, the working mode of the planetary hybrid system is switched to the activation mode;

an activation mode judging step: and under the activation mode, when the working mode required by the driver is the non-activation mode, the working mode of the planetary hybrid system is switched to the non-activation mode.

The arbitration method for the working mode of the planetary hybrid system comprises the following steps:

and judging the closing mode of the neutral engine: the planetary hybrid system operating mode is initialized to the neutral engine off mode in the active mode, and the planetary hybrid system operating mode is switched to the engine start mode if the driver demand operating mode is the neutral engine operating mode and the engine is in the engine off state;

an engine starting mode judging step: when the engine is in the engine starting mode and the engine is in the engine running state, if the driver required working mode is the neutral engine running mode or the neutral engine closing mode, the planetary hybrid system working mode is switched to the neutral engine running mode; or; when the engine is in the engine start mode and the engine is in the engine off state, if the driver-demanded operating mode is the neutral engine off mode, the planetary hybrid system operating mode is switched to the neutral engine off mode;

judging the running mode of the neutral gear engine: in the neutral engine operation mode, when the engine is in the engine stop state or the engine off state, or when the driver-demanded operating mode is the neutral engine off mode, the planetary hybrid system operating mode is switched to the engine stop stage mode; or; in the neutral engine operation mode, if the engine is in the engine operation state and the driver required operation mode is the driving mode, the planetary hybrid system operation mode is switched to the driving mode;

judging the mode of the engine in the stop stage: in the engine stop stage mode, if the engine is in the engine off state and the driver-demanded operating mode is the neutral engine operating mode or the neutral engine off mode, the planetary hybrid system operating mode is switched to the neutral engine off mode;

a driving mode judging step: and under the driving mode, if the driver required working mode is the neutral engine running mode or the neutral engine closing mode, the planetary hybrid system working mode is switched to the neutral engine running mode.

Compared with the prior art, the invention has the advantages and positive effects that:

compared with the prior art, the method has more comprehensive mode division of the power system, relates to an inactive mode, a neutral mode, a driving mode and a failure mode, and covers the whole process from the condition that the engine is not started to the condition that the vehicle is driven normally to the condition that the vehicle is stopped.

Drawings

FIG. 1 is a schematic diagram illustrating steps of a method for arbitrating operating modes of a planetary hybrid system according to the present invention;

FIG. 2 is a schematic structural diagram of a planetary hybrid system according to the present invention;

fig. 3 is a schematic flowchart illustrating an embodiment of a method for arbitrating operating modes of a planetary hybrid system according to the present invention;

FIG. 4 is a schematic flow chart of the engine actual operating state arbitration provided by the present invention;

FIG. 5 is a flow chart illustrating driver demand mode arbitration provided by the present invention;

fig. 6 is a schematic flow chart of the arbitration of the planetary hybrid system operating mode according to the present invention.

Detailed Description

In order to make the objects, technical solutions and advantages of the present application more apparent, the present application will be described and illustrated below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present application and are not intended to limit the present application. All other embodiments obtained by a person of ordinary skill in the art based on the embodiments provided in the present application without any inventive step are within the scope of protection of the present application.

It is obvious that the drawings in the following description are only examples or embodiments of the application, and that it is also possible for a person skilled in the art to apply the application to other similar contexts on the basis of these drawings without inventive effort. Moreover, it should be appreciated that in the development of any such actual implementation, as in any engineering or design project, numerous implementation-specific decisions must be made to achieve the developers' specific goals, such as compliance with system-related and business-related constraints, which may vary from one implementation to another.

Reference in the specification to "an embodiment" means that a particular feature, structure, or characteristic described in connection with the embodiment can be included in at least one embodiment of the specification. The appearances of the phrase in various places in the specification are not necessarily all referring to the same embodiment, nor are separate or alternative embodiments mutually exclusive of other embodiments. Those of ordinary skill in the art will explicitly and implicitly appreciate that the embodiments described herein may be combined with other embodiments without conflict.

Unless otherwise defined, technical or scientific terms referred to herein should have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs. Reference to "a," "an," "the," and similar words throughout this application are not to be construed as limiting in number, and may refer to the singular or the plural. The use of the terms "including," "comprising," "having," and any variations thereof herein, is meant to cover a non-exclusive inclusion; for example, a process, method, system, article, or apparatus that comprises a list of steps or modules (elements) is not limited to the listed steps or elements, but may include other steps or elements not expressly listed or inherent to such process, method, article, or apparatus. Reference to "connected," "coupled," and the like in this application is not intended to be limited to physical or mechanical connections, but rather can include electrical connections, whether direct or indirect. The term "plurality" as referred to herein means two or more. "and/or" describes an association relationship of associated objects, meaning that three relationships may exist, for example, "A and/or B" may mean: a exists alone, A and B exist simultaneously, and B exists alone. The character "/" generally indicates that the former and latter associated objects are in an "or" relationship. Reference herein to the terms "first," "second," "third," and the like, are merely to distinguish similar objects and do not denote a particular ordering for the objects.

The present invention is described in detail with reference to the embodiments shown in the drawings, but it should be understood that these embodiments are not intended to limit the present invention, and those skilled in the art should understand that functional, methodological, or structural equivalents or substitutions made by these embodiments are within the scope of the present invention.

Before describing in detail the various embodiments of the present invention, the core inventive concepts of the present invention are summarized and described in detail by the following examples.

The invention provides a method for arbitrating the working mode of a planetary hybrid system by using the actual working state of an engine and the working mode required by a driver, wherein the actual working state judgment logic of the engine and the working mode required by the driver are elaborated, and the method relates to various modes such as an inactive mode, a neutral mode, a driving mode, a fault mode and the like.

Referring to fig. 2, the planetary hybrid system of the present invention includes an engine, an engine controller, a planetary gear train, a motor 1 controller, a motor 2 controller, a power battery management system, a vehicle controller, etc., wherein the engine is rigidly connected to a planetary carrier of the planetary gear train, the motor 1 is designed as a hollow shaft motor and is rigidly connected to a sun gear of the planetary gear train, the motor 2 is coaxially and rigidly connected to an output shaft, positive and negative poles of direct current terminals of the motor 1 controller and the motor 2 controller are connected to positive and negative poles of the power battery, and the engine controller, the motor 1 controller, the motor 2 controller, and the power battery management system are respectively connected to the vehicle controller through CAN lines.

The planetary hybrid system comprises N, D, R three gears, wherein the N gear is a neutral gear, the D gear is a forward gear, the R gear is a reverse gear, the key comprises four gears of LOCK, ACC, ON and S, signals of KeyAcc, keyOn and KeyS are all set to be 0 under the LOCK gear, signals of KeyAcc and KeyS are set to be 1 and KeyOn and KeyS are set to be 0 under the ACC gear, signals of KeyAcc and KeyOn are set to be 1 and KeyS are set to be 0 under the ON gear, under the S gear, a KeyAcc signal is set to be 0, keyOn, a KeyS signal is set to be 1, a KeyAcc signal is set to be 1, the driver has an accessory power-ON demand, a KeyOn signal is set to be 1, the driver has an engine starting demand, the hand brake comprises two gears of ON and Off, wherein the hand brake execution device provides mechanical braking force when the hand brake is in the ON gear, and the hand brake execution device does not provide mechanical braking force when the hand brake is in the Off gear.

As shown in fig. 1 and fig. 3, the present embodiment discloses a specific implementation of a planetary hybrid system operating mode arbitration method (hereinafter referred to as "method").

The planetary hybrid system operating modes of the present invention include a fault mode, an inactive mode and an active mode, and the active mode includes a neutral engine off mode, an engine start mode, a neutral engine run mode, a drive mode and an engine off phase mode.

The invention relates to a working mode arbitration method of a planetary hybrid system, which mainly comprises the following three steps: step one, arbitrating the actual working state of the engine; step two, arbitrating a driver demand working mode; step three is to obtain the working mode of the planetary hybrid system according to the actual working state of the engine and the working mode required by the driver obtained in the step one and the step two by combined arbitration, and the general flow is shown in fig. 3.

Specifically, the method disclosed in this embodiment mainly includes the following steps:

step S1: and receiving an engine state message sent by an engine controller in the planetary hybrid system through a vehicle controller in the planetary hybrid system to arbitrate the actual working state of the engine.

Specifically, the actual operating state of the engine in step S1 includes four states, i.e., an engine start state, an engine operation state, an engine stop state and an engine shutdown state, the actual operating state of the engine receives an engine state message sent by the engine controller through the vehicle control unit for arbitration, the engine state message (CoEng _ st) uploaded by the engine controller includes a fault state (ENG _ ERR), a start state (ENG _ CRANKING), an operating state (ENG _ RUNNING), a stop state (ENG _ stop), and an operation end state (ENG _ FINISH), and referring to fig. 4, the specific processing steps are as follows:

(1) Judging whether the engine has a fault, if CoEng _ st = ENG _ ERR, the engine enters a fault state, and if not, executing the step (2);

(2) The engine defaults to be in a closed state under a non-fault state, if CoEng _ st = ENG _ CRANKING, the engine enters a starting state, and otherwise, the engine maintains the closed state; when the engine is in a starting state, if CoEng _ st = ENG _ RUNNING, the engine enters an operating state, if CoEng _ st = ENG _ STOPPING, the engine is not started successfully, the engine enters a stop stage state, otherwise, the engine maintains the starting state; when the engine is in an operating state, if CoEng _ st = ENG _ STOPPING, the engine enters a stop stage state, otherwise, the engine maintains the operating state; when the engine is in the stop stage state, the engine enters the off state if CoEng _ st = ENG _ FINISH, the engine restarts if CoEng _ st = ENG _ CRANKING, the engine enters the start state, otherwise the engine maintains the stop stage state.

Step S2: and arbitrating the driver demand working mode through the switching condition state of the driver demand working mode.

Specifically, the driver demand operating mode of step S2 includes an inactive mode and an active mode, wherein the active mode includes a neutral engine off mode, a neutral engine running mode and a driving mode. Referring to fig. 5, the driver demand mode arbitration process steps are as follows:

(1) The method comprises the following steps of judging the switching condition state of a driver required working mode according to a driver operation input signal, wherein the switching of the driver required working mode comprises the switching from an inactive mode to an active mode and the switching from the active mode to the inactive mode, the switching of the driver required working mode under the active mode comprises the switching from a neutral mode to a driving mode and the switching from the driving mode to a neutral mode, the switching of the driver required working mode under the neutral mode comprises the switching from the neutral engine off mode to the neutral engine running mode and the switching from the neutral engine running mode to the neutral engine off mode, the switching condition state of the driver required working mode comprises the switching from the inactive mode to the active mode condition state, the switching from the active mode to the inactive mode condition state, the switching from the neutral mode to the driving mode condition state, the switching from the driving mode to the neutral mode condition state and the neutral engine running requirement condition state, if each driver required working mode switching condition is met, the corresponding condition state mark position 1 is obtained, otherwise, the condition state mark position 0 is obtained, and the specific flow of each driver required working mode switching condition state judgment is as follows:

(1) the condition state of the non-activated mode is switched to the activated mode is judged, a KeyOn signal is set to 1 after a key is turned to an ON gear by an ACC, the whole vehicle controller is powered ON, a power system starts to carry out low-voltage power-ON and high-voltage power-ON, the gear is set to an N gear after the high-voltage power-ON and the low-voltage power-ON are successful, the condition that the driver needs to work is met by switching the non-activated mode to the activated mode is marked to be 1;

(2) judging the condition state of switching the active mode to the inactive mode, 1) setting a KeyOn signal to be 0 after the key is switched to an ACC gear by KeyOn, starting high voltage reduction and low voltage reduction by a power system, switching the working mode required by a driver from the active mode to the inactive mode after the high voltage reduction and the low voltage reduction are completed, and marking the position 1,2) switching the gear to a D gear or an R gear from an N gear when the key is switched to an ON gear by the ACC and the engine is in an off state after the high voltage reduction and the low voltage reduction are successfully powered, wherein the condition state marks the position 1;

(3) judging the condition state of switching the neutral gear mode to the driving mode, switching the gear from N gear to D gear or R gear, keeping the engine in the running state, and marking the condition state as position 1 when the working mode required by the driver is switched from the neutral gear mode to the driving mode;

(4) judging the condition state of switching the driving mode to the neutral mode, switching the gear from the D gear or the R gear to the N gear, enabling the engine to be in an operating or closing state, and marking the condition state as a position 1 when the working mode required by a driver is switched to the neutral mode from the driving mode;

(5) the method comprises the steps of 1) judging the running requirement condition state of a neutral gear engine, wherein 1) when the engine is in a closed state and a hand brake is in an On gear in a neutral gear mode, a key is hit to an S gear by KeyOn and the opening degree of a brake pedal is higher than a set threshold value C1, the condition state mark position 1,2) placing the hand brake in the On gear in the neutral gear mode, if the SOC of a power battery is lower than a set threshold value C2, the condition state mark position 1 is determined, and if the SOC of the power battery is higher than a set threshold value C3, the condition state mark position 0,3) when the hand brake is in an Off gear and the engine is in a running state, the condition state mark position 1 is determined.

(2) Performing arbitration of the driver demand working mode according to the switching condition state of the driver demand working mode obtained in the step (1), wherein the specific processing flow is as follows:

(1) the driver demand working mode is initialized to be an inactive mode, if the current demand working mode of the driver is the inactive mode, whether the inactive mode is switched to an active mode state flag bit is set to be 1 or not is judged, if the state flag bit is 1, the driver demand working mode is switched from the inactive mode to the active mode, if the state flag bit is 0, the driver demand working mode is kept to be the inactive mode, and similarly, if the driver demand working mode is the active mode, whether the active mode is switched to the inactive mode state flag bit is set to be 1 or not is judged, if the state flag bit is 1, the driver demand working mode is switched from the active mode to the inactive mode, and if the state flag bit is 0, the driver demand working mode is kept to be the active mode;

(2) when the driver demand working mode is an activation mode, whether the mode is a neutral mode or a driving mode needs to be further judged, the initial driver demand working mode in the activation mode is default to the neutral mode, if the driver demand working mode is the neutral mode, whether the state flag bit of the neutral mode switched to the driving mode is set to be 1 or not is judged, when the state flag bit is set to be 1, the driver demand working mode is switched from the neutral mode to the driving mode, when the state flag bit is set to be 0, the driver demand working mode is kept to be the neutral mode, and similarly, if the driver demand working mode is the driving mode, whether the state flag bit of the driving mode switched to the neutral mode is set to be 1 or not is judged, when the state flag bit is set to be 1, the driver demand working mode is switched from the driving mode to the neutral mode, and when the state flag bit is set to be 0, the driver demand working mode is kept to be the driving mode;

(3) when the driver demand working mode is the neutral mode, whether the mode is the neutral engine off mode or the neutral engine running mode needs to be further judged, if the neutral engine running demand state mark position 1 exists, the driver demand working mode is the neutral engine running mode, and otherwise, the driver demand working mode is the neutral engine off mode.

And step S3: and obtaining the working mode of the planetary hybrid system according to the actual working state of the engine and the driver demand working mode by joint arbitration.

In step S3, the operating modes of the planetary hybrid system include a fault mode, an inactive mode and an active mode, and the active mode includes a neutral engine off mode, an engine start mode, a neutral engine operating mode, a drive mode and an engine stop phase mode, and referring to fig. 6, the arbitration process of the operating modes of the planetary hybrid system is as follows:

(1) Judging whether the power system has faults, wherein the faults comprise engine faults, engine controller faults, motor 1 controller faults, motor 2 controller faults, power battery faults and power battery management system faults, all the faults are regarded as the power system faults and enter a fault mode, meanwhile, arbitration of a system working mode is not carried out any more, and if the power system has no faults, the step (2) is executed;

(2) The system operating mode is initialized to a non-active mode in a non-failure mode, the system operating mode is switched to the active mode when the driver demand mode is the active mode, the system operating mode is initialized to a neutral engine shutdown mode in the active mode, the system operating mode is switched to the engine starting mode if the driver demand mode is the neutral engine operating mode and the engine is in the shutdown state in the neutral engine shutdown mode, otherwise the system operating mode remains the neutral engine shutdown mode unchanged, the system mode is switched to the neutral engine operating mode if (the driver demand mode is neutral engine operating or the neutral engine shutdown mode) & & the engine is in the operating state) in the engine starting mode, otherwise the system operating mode remains the engine starting mode if the driver demand mode is the neutral engine shutdown mode | (the engine is in the shutdown state) or the system operating mode remains the engine starting mode unchanged, the system operating mode is switched to the engine shutdown mode if the driver demand mode is the neutral engine shutdown mode | | (the engine is in the shutdown state or the shutdown state) in the system operating mode, the system operating mode is switched to the engine shutdown mode if the driver demand mode is the engine shutdown mode | | (the engine is in the engine shutdown state or the engine shutdown state) or the system operating mode remains the engine operating mode if the system operating mode is the engine shutdown mode or the engine shutdown mode, and under the driving mode, if the driver demand mode is a neutral engine running mode or a neutral engine closing mode, the system mode is switched to the neutral engine running mode, otherwise, the system working mode keeps the driving mode unchanged.

The power system provided by the invention has more comprehensive mode division, relates to an inactive mode, a neutral mode, a driving mode and a fault mode, and covers the whole process from the time that an engine of a whole vehicle is not started to the time that the whole vehicle is driven to run normally and then to the time that the whole vehicle is stopped; and the arbitration of the power system mode takes more factors into consideration, including gear signals, key signals, hand brake signals, engine states, power battery SOC, brake pedal signals and the like.

The technical features of the embodiments described above may be arbitrarily combined, and for the sake of brevity, all possible combinations of the technical features in the embodiments described above are not described, but should be considered as being within the scope of the present specification as long as there is no contradiction between the combinations of the technical features.

The above-mentioned embodiments only express several embodiments of the present application, and the description thereof is specific and detailed, but not to be understood as limiting the scope of the invention. It should be noted that, for a person skilled in the art, several variations and modifications can be made without departing from the concept of the present application, and these are all within the scope of protection of the present application. Therefore, the protection scope of the present patent application shall be subject to the appended claims.

Claims (6)

1. A method for arbitrating the working mode of a planetary hybrid system is characterized by comprising the following steps:

arbitration step of actual working state of the engine: receiving an engine state message sent by an engine controller in a planetary hybrid system through a vehicle control unit in the planetary hybrid system to arbitrate the actual working state of the engine; the planetary hybrid system comprises N, D, R gears, the key comprises four gears of LOCK, ACC, ON and S, wherein KeyAcc, keyOn and KeyS signals are all set to be 0 under the LOCK gear, keyAcc signals are set to be 1, keyOn and KeyS signals are set to be 0 under the ACC gear, keyAcc and KeyOn signals are set to be 1 and KeyS signals are set to be 0 under the ON gear, keyAcc signals are set to be 0, keyOn and KeyS signals are set to be 1 and KeyAcc signals are set to be 1 under the S gear, the KeyOn signals are set to be 1 and the KeyAcc signals are set to be 1, the KeyOn signals are set to be 1 and indicate that the driver has the power system to be electrified, the KeyS signals are set to be 1 and indicate that the driver has the engine to be started, and the hand brake comprises two gears of ON and Off;

driver demand work mode arbitration step: performing arbitration of the driver demand working mode through the switching condition state of the driver demand working mode;

arbitration step of system working mode: jointly arbitrating to obtain a planetary hybrid system working mode according to the actual working state of the engine and the driver demand working mode; the planetary hybrid system comprises a fault mode, an inactive mode and an active mode, wherein the active mode comprises a neutral engine closing mode, an engine starting mode, a neutral engine running mode, a driving mode and an engine stopping phase mode;

wherein the driver demand working mode arbitration step further comprises:

judging the mode switching condition state: judging the state of the switching condition of the working mode required by the driver through the operation input signal of the driver; the driver demand operation mode switching condition state includes: the method comprises the following steps that an inactive mode is switched to an active mode condition state, an active mode is switched to an inactive mode condition state, a neutral mode is switched to a driving mode condition state, a driving mode is switched to a neutral mode condition state and a neutral engine running requirement condition state;

when a key is turned into an ON gear by an ACC, a KeyOn signal is set to be 1, the vehicle controller is powered ON, a power system starts to carry out low-voltage power-ON and high-voltage power-ON, the gear is set to be N gear after the low-voltage power-ON and the high-voltage power-ON are both successful, and the non-active mode is switched to a condition state mark position 1 of an active mode condition state;

when a key is in an ACC gear by KeyOn, a KeyOn signal is set to be 0, a power system starts to conduct high-voltage power-down and low-voltage power-down, and after the high-voltage power-down and the low-voltage power-down are completed, an activation mode is switched to a condition state mark position 1 of a condition state of a non-activation mode; or; the key is in an ON gear by an ACC, after high-voltage electrification and low-voltage electrification are successful, the engine is in a closed state, and when the gear is switched from an N gear to a D gear or an R gear, the activated mode is switched to a condition state mark position 1 of a condition state of the non-activated mode;

when the gear is switched from the N gear to the D gear or the R gear and the engine is in a running state, the neutral gear mode is switched to a condition state mark position 1 of a driving mode condition state;

when the gear is switched from the D gear or the R gear to the N gear, the engine is in an operation or closing state, and the driving mode is switched to a condition state mark position 1 of a neutral mode condition state;

when the engine is in a closed state and the hand brake is placed in an On gear in a neutral mode, the key is driven to an S gear by KeyOn, and the opening degree of a brake pedal is higher than a set threshold value C1, and the condition state mark position 1 of the condition state of the neutral engine running demand condition state is determined; or; the hand brake is arranged in an On gear under a neutral mode, if the SOC of the power battery is lower than a set threshold value C2, a condition state mark position 1 of a neutral engine operation demand condition state is arranged, and if the SOC of the power battery is higher than a set threshold value C3, a condition state mark position 0 of the neutral engine operation demand condition state is arranged; or; the condition state mark position 1 of the condition state of the neutral gear engine operation demand condition state when the hand brake is placed in the Off gear and the engine is in the operation state in the neutral gear mode;

the arbitration step of the system working mode further comprises:

and judging the closing mode of the neutral engine: the planetary hybrid system operating mode is initialized to the neutral engine off mode in the active mode, and is switched to the engine start mode if the driver demanded operating mode is the neutral engine operating mode and the engine is in an engine off state;

an engine start mode judging step: when the engine is in the engine starting mode and the engine is in the engine running state, if the driver required working mode is the neutral engine running mode or the neutral engine closing mode, the planetary hybrid system working mode is switched to the neutral engine running mode; or; when the engine is in the engine start mode and the engine is in the engine off state, if the driver demand operating mode is the neutral engine off mode, the planetary hybrid system operating mode is switched to the neutral engine off mode;

judging the running mode of the neutral gear engine: in the neutral engine operation mode, when the engine is in an engine stop state or an engine off state, or when the driver-demanded operating mode is the neutral engine off mode, the planetary hybrid system operating mode is switched to the engine stop stage mode; or; in the neutral engine operation mode, if the engine is in the engine operation state and the driver required operation mode is the driving mode, the planetary hybrid system operation mode is switched to the driving mode;

judging the mode of the engine in the stop stage: in the engine stop stage mode, if the engine is in the engine off state and the driver-demanded operating mode is the neutral engine operating mode or the neutral engine off mode, the planetary hybrid system operating mode is switched to the neutral engine off mode;

a driving mode judging step: in the driving mode, if the driver-demanded operating mode is the neutral engine operating mode or the neutral engine off mode, the planetary hybrid system operating mode is switched to the neutral engine operating mode.

2. The planetary hybrid system operating mode arbitration method according to claim 1, wherein said engine status message comprises: fault state, start state, running state, stop stage state, running end state.

3. The planetary hybrid system operating mode arbitration method according to claim 2, wherein said engine actual operating states comprise an engine start state, an engine running state, an engine off phase state and an engine off state.

4. A planetary hybrid system operating mode arbitration method according to claim 3, characterized in that said driver demand operating modes comprise an inactive mode and an active mode, wherein the active modes comprise a neutral engine off mode, a neutral engine running mode and a driving mode.

5. The arbitration method for planetary hybrid system according to claim 4, wherein the arbitration method for system operation mode comprises:

a fault mode judging step: judging whether a power system has a fault, if so, entering a working mode of the planetary hybrid system into a fault mode; and if not, entering the non-activation mode.

6. The arbitration method for planetary hybrid system according to claim 5, wherein the arbitration method for system operation mode further comprises:

and an inactive mode judging step: in the non-activation mode, when the driver demand working mode is the activation mode, the working mode of the planetary hybrid system is switched to the activation mode;

an activation mode judging step: and under the activation mode, when the working mode required by the driver is the non-activation mode, the working mode of the planetary hybrid system is switched to the non-activation mode.

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