CN106853819B

CN106853819B - A kind of HCU and the control method of clutch operating mode switching

Info

Publication number: CN106853819B
Application number: CN201510906068.0A
Authority: CN
Inventors: 孙俊; 密刚刚; 邱国茂; 赵沂; 胡瑾瑜; 王伦珍
Original assignee: SAIC Motor Corp Ltd
Current assignee: SAIC Motor Corp Ltd
Priority date: 2015-12-09
Filing date: 2015-12-09
Publication date: 2019-05-24
Anticipated expiration: 2035-12-09
Also published as: CN106853819A

Abstract

A kind of HCU and the control method of clutch operating mode switching, which comprises when clutch is in non-parallel operation mode, judge whether the operating condition of engine and driving motor meets default first condition；When the operating condition of the engine and driving motor meets the first condition, judge power source premode cannot meet operator demand's torque in the case where, if clutch is in paralleling model, if power source can be made to provide bigger driving torque or judge whether the efficiency of power source and the noise and vibration situation of vehicle meet default second condition；When determining that clutch is in paralleling model, when power source can be made to provide the efficiency and noise and vibration situation of bigger driving torque or power source meet the second condition, clutch is switched to paralleling model work.It can guarantee that the power of vehicle is sufficient using the above scheme, improve traffic safety, avoid generating resonance, reduce noise.

Description

A kind of HCU and the control method of clutch operating mode switching

Technical field

The present invention relates to the controlling parties that clutch control field more particularly to a kind of HCU and clutch operating mode switch Method.

Background technique

Automobile plays more and more important role in modern society, it has also become in vast majority of people's daily life not The a part that can or lack.Under the background for advocating environmental protection, pure electric automobile and hybrid vehicle (Hybrid Electric Vehicle, HEV) it comes into being.When hybrid vehicle is run, there are three types of operating modes for clutch: pure electric drive mode, string Gang mould formula and paralleling model.Wherein: pure electric drive mode, clutch only corresponding with motor can be closed, therefore only motor Power is provided for automobile.Series model, driven by engine start (Integrated Starter and Generator, ISG) The electric energy of electric power generation, sending is conveyed to driving motor by electric machine controller, generates battery torque by driving motor and drives vapour Vehicle traveling realizes that power transmits by motor between reasonable match system.Paralleling model, engine and motor are same When for automobile provide power.

Currently, vehicle is when requirement drive torque quickly increases or needs the operating condition of larger driving torque in climbing etc., Clutch will be made to enter paralleling model work；And when the requirement drive torque of vehicle is smaller, will clutch be moved back Paralleling model out.

But the switching of above-mentioned clutch operating mode and unreasonable, it is be easy to cause being short of power for vehicle, influences to go Vehicle safety, and generation resonance is also resulted in, noise is very big.

Summary of the invention

Problems solved by the invention is how to guarantee that the power of vehicle is sufficient, improves traffic safety, avoids generating resonance, drop Low noise.

To solve the above problems, the present invention provides a kind of control method of clutch operating mode switching, the method packet It includes:

When the clutch is in non-parallel operation mode, it is pre- to judge whether the operating condition of engine and driving motor meets If first condition；

When the operating condition of the engine and driving motor meets the first condition, judge power source premode not In the case where being able to satisfy operator demand's torque, if the clutch is in paralleling model, if the power source can be made Bigger driving torque is provided, or judges whether the efficiency of the power source and the noise and vibration situation of vehicle meet default Article 2 Part；

When determining that the clutch is in paralleling model, the power source can be made to provide bigger driving torque or described dynamic When the efficiency and noise and vibration situation in power source meet the second condition, the clutch is switched to paralleling model work.

Optionally, the default first condition, comprising: engine is in starting state and the revolving speed of driving motor is greater than hair The idling speed of motivation.

Optionally, if the clutch is in paralleling model, if power source can be made to provide bigger driving and turned round Square, comprising:

Judge the first peak torque that power source is capable of providing when whether operator demand's torque is greater than series model；

When the first peak torque that power source is capable of providing when determining that operator demand's torque is greater than series model, judgement Whether the second peak torque that the power source is capable of providing when paralleling model is greater than first peak torque；

When determining that second peak torque is greater than first peak torque, determine that the clutch is in simultaneously gang mould Formula can make power source provide bigger driving torque.

Optionally, the second condition, comprising: when the clutch is in paralleling model, the efficiency of the power source Efficiency when present mode is in greater than the clutch, and the noise and vibration parameter of the vehicle is lower than preset threshold.

Optionally, whether the efficiency for judging power source and noise and vibration situation meet default second condition, comprising:

Judge whether the revolving speed of the driving motor is greater than default first revolving speed and is less than default second revolving speed；

When the revolving speed of the driving motor is greater than default first revolving speed and is less than default second revolving speed, determine it is described from The efficiency that clutch is in power source described in paralleling model is greater than the efficiency when clutch is in present mode, and the vehicle Noise and vibration parameter be lower than preset threshold.

The embodiment of the invention provides a kind of control methods of clutch operating mode switching, which comprises

When the operating condition of the engine and the driving motor meets the first condition, judge power source in mould before In the case that formula is not able to satisfy operator demand's torque, if the clutch is in paralleling model, if can make described dynamic Power source provides bigger driving torque；

When determining that the clutch is in paralleling model, when the power source can be made to provide bigger driving torque, by institute It states clutch and is switched to paralleling model work.

Optionally, if the judgement clutch is in paralleling model, if power source can be made to provide bigger driving and turned round Square, comprising:

When the first peak torque that power source is capable of providing when determining that operator demand's torque is greater than series model, judgement Whether the second peak torque that power source is capable of providing when paralleling model is greater than first peak torque；

When determining that second peak torque is greater than first peak torque, determine that clutch is in paralleling model, Power source can be made to provide bigger driving torque.

When the operating condition of the engine and driving motor meets the first condition, the efficiency and noise of power source are judged Whether vibration state meets default second condition；

When the efficiency and noise and vibration situation that determine the power source meet the second condition, the clutch is cut It is changed to paralleling model work.

Optionally, the default first condition, comprising: the engine is in starting state and the revolving speed of driving motor is big In the idling speed of engine.

Optionally, the second condition, comprising: the noise and vibration parameter of vehicle is lower than preset threshold.

When the revolving speed of the driving motor is greater than default first revolving speed and is less than default second revolving speed, power source is determined Efficiency and noise and vibration situation meet the second condition.

When clutch is in paralleling model, judge whether operator demand's torque meets default first condition or driving electricity The acceleration of machine is negative value, and whether the absolute value of the acceleration is greater than the revolving speed of preset first threshold value or the driving motor Whether default third revolving speed is less than；

When determining that operator demand's torque meets the first condition, if judgement clutch is in series model When, can prevent power source premode from meeting operator demand's torque in the case where, bigger driving torque is provided, or The more efficient or series model that series model is able to satisfy the power source in the case where demand torque is able to satisfy demand torque In the case of engine noise vibration meet default third condition；

When determine the driving motor acceleration be negative value, and the absolute value of the acceleration be greater than preset first threshold value Or the revolving speed of the driving motor is less than default third revolving speed, if or clutch power source can be made to mention when being in series model Meet default third condition for the more efficient or described engine noise and vibration of bigger driving torque or the power source, it will The clutch is switched to tandem working mode.

Optionally, the first condition, comprising:

The driving torque or the driving that power source is capable of providing when operator demand's torque is greater than paralleling model When the driving torque that power source is capable of providing when member's demand torque is less than series model, determine that operator demand's torque meets The first condition.

Optionally, the third revolving speed is the engine idle rotational.

Optionally, if the judgement clutch is in series model, whether the efficiency of the power source is higher, comprising:

Judge whether the revolving speed of the driving motor is less than default 4th revolving speed；

When the revolving speed of the driving motor is less than four revolving speed, the efficiency of power source when series model is determined It is higher.

Optionally, the third condition, comprising: when the clutch is in non-paralleling model, the effect of the power source Rate is greater than the efficiency when clutch is in paralleling model, and the noise of vehicle and vibration are lower than preset threshold.

Optionally, whether the efficiency for judging vehicle and noise and vibration situation meet default third condition, comprising:

Judge whether the revolving speed of the driving motor is greater than default 5th revolving speed；

When the revolving speed of the driving motor is greater than five revolving speed, determine that the noise of the vehicle and Vibration Condition are full The foot third condition.

When clutch is in paralleling model, judge whether operator demand's torque meets default first condition or driving electricity The acceleration of machine is negative value, and whether the absolute value of the acceleration is greater than the revolving speed of preset first threshold value or the driving motor Whether third revolving speed is less than；

When determining that operator demand's torque meets the first condition, if judgement clutch is in series model When, can prevent power source premode from meeting operator demand's torque in the case where bigger driving torque or string are provided Gang mould formula is able to satisfy the more efficient of the power source in the case where demand torque；

When determining that clutch is in series model, power source can be made to provide bigger driving torque or the power source The acceleration of the more efficient or described driving motor is negative value, and the absolute value of the acceleration is greater than the first threshold or institute When stating the revolving speed of driving motor less than the third revolving speed, the clutch is switched into series model by paralleling model.

Optionally, the first condition, comprising:

Optionally, the third revolving speed is the engine idle rotational.

When the clutch is in paralleling model, judge whether drive demand torque meets default first condition；

When determining that the drive demand torque meets the first condition, judge whether engine noise and vibration meet Default third condition；

When the noise and vibration that determine the engine meet the third condition, by the clutch by paralleling model Switch to series model.

Optionally, the first condition, comprising:

When the driving torque that power source is capable of providing when operator demand's torque is less than series model, described in determination Operator demand's torque meets the first condition.

Optionally, the third condition, comprising: the noise of vehicle and vibration are lower than preset threshold.

Optionally, whether the noise and vibration situation for judging vehicle meets default third condition, comprising:

Judge whether the revolving speed of driving motor is greater than default 5th revolving speed；

When the clutch is in paralleling model, judge the acceleration of driving motor for negative value, and the acceleration Whether absolute value is greater than preset first threshold value or whether the revolving speed of the driving motor is less than default third revolving speed；

When determine the driving motor acceleration be negative value, and the absolute value of the acceleration be greater than the first threshold Or the revolving speed of the driving motor be less than the third revolving speed when, the clutch is switched into series model by paralleling model.

Optionally, the third revolving speed is engine idle rotational.

When the clutch is in paralleling model, judge whether operator demand's torque meets default first condition；

When determining that the drive demand torque meets the first condition, if judgement clutch is in series model, Power source whether can be made to provide bigger driving torque；

When determining that clutch is in series model, when power source can be made to provide bigger driving torque, by the clutch Device switches to series model by paralleling model.

Optionally, the first condition, comprising:

When the driving torque that power source is capable of providing when operator demand's torque is greater than paralleling model, described in determination Operator demand's torque meets the first condition.

When determining that operator demand's torque meets the first condition, if judgement clutch is in series model When, whether the efficiency of power source is higher；

When determining that clutch is in series model, the power source it is more efficient when, by the clutch by parallel connection Pattern switching is to series model.

Optionally, the first condition, comprising:

Judge whether the revolving speed of driving motor is less than default 4th revolving speed；

When determining that operator demand's torque meets the first condition, judge whether engine noise and vibration are full The default third condition of foot；

Optionally, the first condition, comprising:

The embodiment of the invention provides a kind of HCU, the HCU includes:

First judging unit is suitable for when clutch is in non-parallel operation mode, judges engine and driving motor Whether operating condition meets default first condition；

Second judgment unit, suitable for judging when the operating condition of the engine and driving motor meets the first condition Power source premode cannot meet operator demand's torque in the case where, if the clutch is in paralleling model, be It is no that the power source can be made to provide bigger driving torque, or judge the efficiency of the power source and the noise and vibration situation of vehicle Whether satisfaction presets second condition；

First switch unit is suitable for being in paralleling model when the determining clutch, the power source can be made to provide more When the efficiency and noise and vibration situation of big driving torque or the power source meet the second condition, the clutch is switched For paralleling model work.

Optionally, the second judgment unit, comprising:

First judgment sub-unit, power source is capable of providing when suitable for judging whether operator demand's torque is greater than series model The first peak torque；

Second judgment sub-unit, suitable for determining that operator demand's torque is greater than series connection when first judgment sub-unit When the first peak torque that power source is capable of providing when mode, the second maximum torsion that power source is capable of providing when paralleling model is judged Whether square is greater than first peak torque, and when determining that second peak torque is greater than first peak torque, really Determine clutch and be in paralleling model, power source can be made to provide bigger driving torque.

Optionally, the second judgment unit, suitable for judging whether the revolving speed of the driving motor is greater than default first turn Speed is simultaneously less than default second revolving speed；

The embodiment of the invention provides a kind of HCU, the HCU includes:

Third judging unit is suitable for when clutch is in paralleling model, it is pre- to judge whether operator demand's torque meets If the acceleration of first condition or driving motor be negative value, and the absolute value of the acceleration whether be greater than preset first threshold value or Whether the revolving speed of the driving motor is less than default third revolving speed；

4th judging unit, suitable for determining that operator demand's torque meets described first when the third judging unit When condition, if judgement clutch is in series model, if power source can be made to provide bigger driving torque or the power Whether the efficiency in source higher or whether engine noise and vibration meet default third condition；

Second switch unit, suitable for that can make when the 4th judging unit determines that clutch is in series model Power source provides the noise of the more efficient or determining engine of bigger driving torque or the power source and vibration meets institute The revolving speed for stating driving motor described in third condition or the third judging unit is greater than the third revolving speed or the driving motor Revolving speed when whether being less than default third revolving speed, the clutch is switched into series model by paralleling model.

Optionally, the first condition, comprising:

Optionally, the third revolving speed is the engine idle rotational.

Optionally, the 4th judging unit, suitable for judging whether the revolving speed of the driving motor is less than default 4th turn Speed；

Optionally, the 4th judging unit, suitable for judging whether the revolving speed of the driving motor is greater than default 5th turn Speed determines that the noise of vehicle and Vibration Condition meet described the when the revolving speed of the driving motor is greater than five revolving speed Three conditions.

The embodiment of the invention provides a kind of HCU, the HCU includes:

5th judging unit is suitable for when clutch is in non-parallel operation mode, judges engine and driving motor Whether operating condition meets default first condition；

6th judging unit, suitable for judging when the operating condition of the engine and driving motor meets the first condition Power source premode cannot meet operator demand's torque in the case where, if the clutch is in paralleling model, be It is no that power source can be made to provide bigger driving torque；

Third switch unit is suitable for being in paralleling model when determining clutch, power source can be made to provide bigger driving and turned round When square, clutch is switched to paralleling model work.

The embodiment of the invention provides a kind of HCU, the HCU includes:

7th judging unit is suitable for when clutch is in non-parallel operation mode, judges engine and driving motor Whether operating condition meets default first condition；

8th judging unit, suitable for judging when the operating condition of the engine and driving motor meets the first condition Whether the efficiency and noise and vibration situation of power source meet default second condition；

4th switch unit, suitable for meeting the second condition when the efficiency and noise and vibration situation that determine the power source When, clutch is switched to paralleling model work.

The embodiment of the invention provides a kind of HCU, the HCU includes:

9th judging unit is suitable for when clutch is in paralleling model, it is pre- to judge whether operator demand's torque meets If the acceleration of first condition or driving motor be negative value, and the absolute value of the acceleration whether be greater than preset first threshold value or Whether the revolving speed of the driving motor is less than third revolving speed；

Tenth judging unit, suitable for when determining that operator demand's torque meets the first condition, if judgement from When clutch is in series model, if the efficiency of the power source bigger driving torque of offer or the power source can be made whether more It is high；

5th switch unit, suitable for power source when determining that clutch is in series model, can be made to provide bigger driving The acceleration of the more efficient or described driving motor of torque or the power source is negative value, and the absolute value of the acceleration is big When the revolving speed of the first threshold or the driving motor is less than the third revolving speed, the clutch is cut by paralleling model Shift to series model.

The embodiment of the invention provides a kind of HCU, the HCU includes:

11st judging unit is suitable for when clutch is in paralleling model, judges whether operator demand's torque meets Default first condition；

12nd judging unit, suitable for judging institute when determining that operator demand's torque meets the first condition It states engine noise and whether vibration meets default third condition；

6th switch unit, suitable for when the noise and vibration that determine the engine meet the third condition, by institute It states clutch and series model is switched to by paralleling model.

The embodiment of the invention provides a kind of HCU, the HCU includes:

13rd judging unit, be suitable for when clutch is in paralleling model, judge the acceleration of driving motor for negative value, And the absolute value of the acceleration whether is greater than preset first threshold value or whether the revolving speed of the driving motor is less than default third Revolving speed；

7th switch unit, suitable for being negative value when the acceleration for determining the driving motor, and the acceleration is absolute When value is greater than the revolving speed of the first threshold or the driving motor less than the third revolving speed, by the clutch by simultaneously gang mould Formula switches to series model.

The embodiment of the invention provides a kind of HCU, the HCU includes:

14th judging unit is suitable for when clutch is in paralleling model, judges whether operator demand's torque meets Default first condition；

15th judging unit, suitable for when determining that operator demand's torque meets the first condition, if judgement When clutch is in series model, if power source can be made to provide bigger driving torque；

8th switch unit, suitable for power source when determining that clutch is in series model, can be made to provide bigger driving When torque, the clutch is switched into series model by paralleling model.

The embodiment of the invention provides a kind of HCU, the HCU includes:

16th judging unit is suitable for when clutch is in paralleling model, judges whether operator demand's torque meets Default first condition；

17th judging unit, suitable for when determining that operator demand's torque meets the first condition, if judgement When clutch is in series model, whether the efficiency of power source is higher；

9th switch unit, suitable for when determining that clutch is in series model, the power source it is more efficient when, will The clutch switches to series model by paralleling model.

The embodiment of the invention provides a kind of HCU, the HCU includes:

18th judging unit is suitable for when clutch is in paralleling model, judges whether operator demand's torque meets Default first condition；

19th judging unit, suitable for judging to send out when determining that operator demand's torque meets the first condition Whether motivation noise and vibration meet default third condition；

Tenth switch unit, suitable for when the noise and vibration that determine the engine meet the third condition, by institute It states clutch and series model is switched to by paralleling model.

Compared with prior art, technical solution of the present invention has the advantage that

If clutch is currently at non-parallel operation mode, when determining that clutch is in paralleling model, power source can be made When bigger driving torque is provided, or when the efficiency and noise and vibration situation of power source meet second condition, cross clutch It is switched to paralleling model work.It can guarantee that clutch works under the mode that can provide more large torque for vehicle, so as to Support vehicles power is sufficient, therefore can be improved traffic safety, and can also avoid resonating, and reduces noise, improves car comfort.

If clutch is currently at parallel operation mode, if power can be made when determining clutch is in series model Source provides bigger driving torque, if or determine that clutch be in the more efficient of power source described in series model, or determination is such as Fruit clutch is in the noise of engine described in series model and vibration meets the third condition, if or determined at clutch The acceleration of the driving motor described in series model is negative value, and the absolute value of the acceleration is greater than preset first threshold value or institute When stating the revolving speed of driving motor less than the third revolving speed, by the way that clutch is switched to other operating modes.Can guarantee from Clutch works under the mode that can provide more large torque for vehicle, sufficient so as to support vehicles power, therefore can be improved row Vehicle safety, and can also avoid resonating, noise is reduced, car comfort is improved.

Detailed description of the invention

Fig. 1 is the flow diagram of the control method of one of embodiment of the present invention clutch operating mode switching；

Fig. 2 is the structural schematic diagram of one of embodiment of the present invention HCU；

Fig. 3 is the flow diagram of the control method of one of embodiment of the present invention clutch operating mode switching；

Fig. 4 is the structural schematic diagram of one of embodiment of the present invention HCU；

Fig. 5 is the flow diagram of the control method of one of embodiment of the present invention clutch operating mode switching；

Fig. 6 is the structural schematic diagram of one of embodiment of the present invention HCU；

Fig. 7 is the flow diagram of the control method of one of embodiment of the present invention clutch operating mode switching；

Fig. 8 is the structural schematic diagram of one of embodiment of the present invention HCU；

Fig. 9 is the flow diagram of the control method of one of embodiment of the present invention clutch operating mode switching；

Figure 10 is the structural schematic diagram of one of embodiment of the present invention HCU；

Figure 11 is the flow diagram of the control method of one of embodiment of the present invention clutch operating mode switching；

Figure 12 is the structural schematic diagram of one of embodiment of the present invention HCU；

Figure 13 is the flow diagram of the control method of one of embodiment of the present invention clutch operating mode switching；

Figure 14 is the structural schematic diagram of one of embodiment of the present invention HCU；

Figure 15 is the flow diagram of the control method of one of embodiment of the present invention clutch operating mode switching；

Figure 16 is the structural schematic diagram of one of embodiment of the present invention HCU；

Figure 17 is the flow diagram of the control method of one of embodiment of the present invention clutch operating mode switching；

Figure 18 is the structural schematic diagram of one of embodiment of the present invention HCU；

Figure 19 is the flow diagram of the control method of one of embodiment of the present invention clutch operating mode switching；

Figure 20 is the structural schematic diagram of one of embodiment of the present invention HCU.

Specific embodiment

There are three types of operating modes for clutch: pure electric drive mode, series model and paralleling model.Currently, clutch and Connection Working mode switching method is only when vehicle suddenly accelerates or the larger vehicle traction demand torque of needs or the required vehicles such as climbing Driving demand torque controls the clutch and enters parallel operation mode when quickly increasing.However, above-mentioned clutch Working mould The scheme that formula switches over be easy to cause being short of power for vehicle, influences traffic safety, and also results in generation resonance, noise It is very big.

To solve the above problems, the embodiment of the invention provides the control methods that HCU and clutch operating mode switch, if Clutch is currently at non-parallel operation mode, when determining that clutch is in paralleling model, power source can be made to provide bigger drive When dynamic torque, or when the efficiency and noise and vibration situation of power source meet second condition, by the way that clutch is switched to simultaneously The work of gang mould formula.It can guarantee clutch work under the mode that can provide more large torque for vehicle, so as to support vehicles Power is sufficient, therefore can be improved traffic safety, and can also avoid resonating, and reduces noise, improves car comfort.

To make the above purposes, features and advantages of the invention more obvious and understandable, with reference to the accompanying drawing to the present invention Specific embodiment be described in detail.

Fig. 1 shows the process signal of the control method of one of embodiment of the present invention clutch operating mode switching Figure.The specific steps that clutch operating mode switches when below with reference to Fig. 1 are introduced.

S11: when clutch is in non-parallel operation mode, it is pre- to judge whether the operating condition of engine and driving motor meets If first condition.

In specific implementation, when being switched to parallel operation mode in order to ensure clutch, engine will not can not start, or Person causes to stop working since revolving speed is too low, can judge engine and driving electricity when clutch is in non-parallel operation mode Whether the operating condition of machine meets default first condition.

In an embodiment of the present invention, the first condition is that engine is in starting state and the revolving speed of driving motor is big In the idling speed of engine.

When the operating condition of the engine and driving motor meets the first condition, S12 is executed；Otherwise, then terminate to follow Ring.

S12: judge power source premode cannot meet operator demand's torque in the case where, if clutch be in simultaneously When gang mould formula, if power source can be made to provide bigger driving torque or judge the efficiency of power source and the noise and vibration shape of vehicle Whether condition meets default second condition.

In specific implementation, it can remove to judge whether the operating mode of switch clutch from each consideration angle, such as: for Ensure that power source can provide bigger driving torque always for vehicle, if can judge that clutch is in paralleling model, Power source whether can be made to provide bigger driving torque.Further for example, in order to improve the comfort of driving so that the vibration of vehicle and Noise drops to lower level, and whether the noise and vibration situation of the efficiency and vehicle that can judge power source meets default Article 2 Part.

In an embodiment of the present invention, the second condition, comprising: described when the clutch is in paralleling model The efficiency of power source is greater than the efficiency when clutch is in present mode, and the noise and vibration parameter of the vehicle is lower than pre- If threshold value.

In specific implementation, it is limited to the type of the operating mode of clutch, can is by judging operator demand's torque No the first peak torque for being capable of providing of power source when being greater than series model；Then when determine operator demand's torque be greater than series connection When the first peak torque that power source is capable of providing when mode, the second maximum torsion that power source is capable of providing when paralleling model is judged Whether square is greater than first peak torque；Then when determining that second peak torque is greater than first peak torque, Determine that clutch is in paralleling model, can make power source provide bigger driving torque.

In specific implementation, it is learnt according to real vehicle experience, the second revolving speed is power source efficiency ratio string under parallel operation mode Join the high revolving speed point of operating mode, this revolving speed point is related to accelerator pedal position, indicates that the correspondence under different load is efficient Revolving speed point, when the revolving speed of driving motor be higher than this second revolving speed when, when showing parallel operation mode, power source it is more efficient. Second revolving speed generates the revolving speed point of larger noise and vibration, second revolving speed and accelerator pedal position phase when being parallel operation mode It closes, indicates the biggish revolving speed point of correspondence noise and vibration under different load, the larger (throttle of and load higher in engine speed Pedal position is deeper), it easily resonates, noise and vibration problem is obvious.According to the characteristic of power source, first revolving speed is less than institute The efficiency term and noise and vibration condition considered when stating the second revolving speed, therefore being switched to parallel operation mode does not conflict.

Operating mode is joined compared to pure motor due to tandem working mode again, engine can charge to battery to provide more More driving powers, therefore the driving torque ability for connection operating mode of connecting centainly is not less than the driving torque energy of pure motor mode Power.

Thus it can go whether the efficiency for judging power source and noise and vibration situation meet by the characteristic of engine speed Default second condition, for example can judge whether the revolving speed of the driving motor is greater than default first revolving speed and is less than default second Revolving speed；

When determining that clutch is in paralleling model, can make power source provide bigger driving torque or power source efficiency and When noise and vibration situation meets the second condition, S13 is executed；Otherwise, then terminate.

S13: clutch is switched to paralleling model work.

It in specific implementation, can be when true in order to ensure power source can provide bigger driving torque always for vehicle Determine clutch and be in paralleling model, when power source can be made to provide bigger driving torque, clutch is switched to simultaneously gang mould Formula work.And in order to promote the comfort of driving, the efficiency and noise and vibration situation for also capableing of power source meet the Article 2 When part, clutch is switched to paralleling model work.

To better understand those skilled in the art and realizing the present invention, the following provide the above-mentioned clutches of correspondence The HCU of the control method of operating mode switching.

Fig. 2 shows the structural schematic diagrams of one of embodiment of the present invention HCU.The HCU can include: the first judgement Unit 1, second judgment unit 2 and the first switch unit 3, in which:

First judging unit 1 is suitable for when clutch is in non-parallel operation mode, judges engine and driving electricity Whether the operating condition of machine meets default first condition；

The second judgment unit 2, suitable for determining the work of the engine and driving motor when first judging unit 1 When condition meets the first condition, judge power source premode cannot meet operator demand's torque in the case where, if from When clutch is in paralleling model, if power source can be made to provide bigger driving torque or judge the efficiency and vehicle of power source Whether noise and vibration situation meets default second condition；

First switch unit 3 is suitable for being in paralleling model when the determining clutch of the second judgment unit 2, can When the efficiency and noise and vibration situation of the bigger driving torque of power source offer or power source being made to meet the second condition, by clutch Device is switched to paralleling model work.

In specific implementation, the default first condition, comprising: engine is in the revolving speed of starting state and driving motor Greater than the idling speed of engine.

In specific implementation, the second judgment unit 2, comprising:

First judgment sub-unit 21, power source can mention when suitable for judging whether operator demand's torque is greater than series model The first peak torque supplied；

Second judgment sub-unit 22, suitable for determining that operator demand's torque is greater than when first judgment sub-unit 21 When the first peak torque that power source is capable of providing when series model, judge when paralleling model that power source is capable of providing second is most Whether large torque is greater than first peak torque, and when determining second peak torque is greater than first peak torque When, it determines that clutch is in paralleling model, power source can be made to provide bigger driving torque.

In specific implementation, the second condition, comprising: when the clutch is in paralleling model, the power source Efficiency be greater than the efficiency when clutch be in present mode, and the noise and vibration parameter of the vehicle is lower than presetting threshold Value.

In specific implementation, the second judgment unit 2, suitable for judging it is default whether the revolving speed of the driving motor is greater than First revolving speed is simultaneously less than default second revolving speed；

If it should be noted that when being in paralleling model due to judgement clutch, if power source can be made to provide bigger Driving torque and judge whether the efficiency of power source and the noise and vibration situation of vehicle meet default second condition, the two judge It is to go to consider whether to switch over the operating mode of clutch from different angles, so the two being capable of individualism.Not Protection scope of the present invention is caused to limit, as long as when can satisfy any one described Rule of judgment, and can accordingly hold The work of row clutch operating mode switching.

Fig. 3 shows the control method of one of embodiment of the present invention clutch operating mode switching, the method packet It includes:

S31: when clutch is in non-parallel operation mode, it is pre- to judge whether the operating condition of engine and driving motor meets If first condition.

In specific implementation, the default first condition, comprising: engine is in the revolving speed of starting state and driving motor Greater than the idling speed of engine.By judging that engine is in starting and the revolving speed of eastern motor is greater than the idling of engine Revolving speed, it can be ensured that when clutch switches to paralleling model, engine misses will not be led to since revolving speed is too low.

When the operating condition of the engine and driving motor meets the first condition, S32 is executed；Otherwise, then terminate.

S32: judge power source premode cannot meet operator demand's torque in the case where, if clutch be in simultaneously When gang mould formula, if power source can be made to provide bigger driving torque.

In specific implementation, to guarantee that power source can provide bigger power for vehicle, can when the engine and When the operating condition of driving motor meets the first condition, if judgement clutch is in paralleling model, if power source can be made Bigger driving torque is provided.

In an embodiment of the present invention, judged by following method:

The first peak torque that power source is capable of providing when whether operator demand's torque is greater than series model first, then When the first peak torque that power source is capable of providing when determining that operator demand's torque is greater than series model, paralleling model is judged When the second peak torque for being capable of providing of power source whether be greater than first peak torque, then when determining that described second is maximum It when torque is greater than first peak torque, determines that clutch is in paralleling model, power source can be made to provide bigger driving and turned round Square.

When determining that clutch is in paralleling model, when power source can be made to provide bigger driving torque, then S33 is executed, it is no Then, then terminate.

S33: clutch is switched to paralleling model work.

In specific implementation, when determining that clutch is in paralleling model, enable to vehicle more power it is sufficient when It waits, clutch operating mode can be switched to paralleling model.

To more fully understand those skilled in the art and realizing the present invention, following figure 4 is provided for showing with Fig. 3 Embodiment middle clutch method for handover control a kind of HCU, the HCU can include: that the 5th judging unit the 41, the 6th is sentenced Disconnected unit 42 and third switch unit 43, in which:

5th judging unit 41 is suitable for when clutch is in non-parallel operation mode, judges engine and driving Whether the operating condition of motor meets default first condition, the default first condition, comprising: engine is in starting state and driving The revolving speed of motor is greater than the idling speed of engine.；

6th judging unit 42, suitable for meeting the first condition when the operating condition of the engine and driving motor When, judge power source premode cannot meet operator demand's torque in the case where, if clutch is in paralleling model, Power source whether can be made to provide bigger driving torque；

The third switch unit 43 is suitable for being in paralleling model when determining clutch, power source can be made to provide bigger When driving torque, clutch is switched to paralleling model work.

Fig. 5 shows the control method of one of embodiment of the present invention clutch operating mode switching, the method energy Enough include:

S51: when clutch is in non-parallel operation mode, it is pre- to judge whether the operating condition of engine and driving motor meets If first condition.

In specific implementation, the default first condition is that engine is in starting state and the revolving speed of driving motor is greater than The idling speed of engine.

When the operating condition of the engine and driving motor meets the first condition, S52 is executed；Otherwise, then terminate.

S52: judge whether the efficiency of power source and noise and vibration situation meet default second condition.

In specific implementation, it can judge whether the efficiency of power source and noise and vibration situation meet by following method Default second condition: judge whether the revolving speed of the driving motor is greater than default first revolving speed and is less than default second revolving speed；

In an embodiment of the present invention, the second condition is that the noise and vibration parameter of the vehicle is lower than preset threshold.

When the efficiency and noise and vibration situation that determine the power source meet the second condition, S53 is executed；Otherwise, Then terminate.

S53: clutch is switched to paralleling model work.

In specific implementation, when the efficiency for determining power source can be higher, and noise and vibration situation is more reasonable It waits, clutch can be switched to paralleling model work, so as to promote the comfort of driving.

To more fully understand those skilled in the art and realizing the present invention, Fig. 6 shows the reality shown in corresponding diagram 5 The structure chart of the corresponding HCU of control method of the clutch operating mode switching in example is applied, the HCU can include: the 7th to sentence Disconnected unit 61, the 8th judging unit 62 and the 4th switch unit 63, in which:

7th judging unit 61 is suitable for when clutch is in non-parallel operation mode, judges engine and driving Whether the operating condition of motor meets default first condition, the default first condition, comprising: engine is in starting state and driving The revolving speed of motor is greater than the idling speed of engine.；

8th judging unit 62, suitable for meeting the first condition when the operating condition of the engine and driving motor When, judge whether the efficiency of power source and noise and vibration situation meet default second condition, the second condition, comprising: in institute When stating clutch and being in paralleling model, the efficiency of the power source is greater than the efficiency when clutch is in present mode, and The noise and vibration parameter of the vehicle is lower than preset threshold；

4th switch unit 63, suitable for meeting described the when the efficiency and noise and vibration situation that determine the power source When two conditions, clutch is switched to paralleling model work.

The embodiment of the invention also provides the control methods that another HCU and clutch operating mode switch, if clutch It is currently at parallel operation mode, if power source can be made to provide bigger driving when determining that clutch is in series model The noise of the more efficient or described engine of torque or the power source and vibration meet the third condition or the driving The acceleration of motor is negative value, and the absolute value of the acceleration is greater than preset first threshold value or the revolving speed of the driving motor is small When the third revolving speed, by the way that clutch is switched to other operating modes.It can guarantee that clutch work can be vehicle It is sufficient so as to support vehicles power under the mode that more large torque is provided, therefore can be improved traffic safety, and can also avoid Resonance reduces noise, improves car comfort.

Fig. 7 shows the process signal of the control method of the switching of another clutch operating mode in the embodiment of the present invention Figure.Specific steps below with reference to Fig. 7 to clutch from parallel operation pattern switching to other operating modes describe in detail.

S71: when clutch is in paralleling model, judge whether operator demand's torque meets default first condition.

In specific implementation, the control switched to clutch operating mode can be considered from multiple angles.For example, in order to protect Card engine occur as revolving speed is too low and caused by stop working problem, can judge the acceleration of driving motor for negative value, and Whether the absolute value of the acceleration is greater than preset first threshold value, for another example, can judge the driving motor revolving speed whether Less than default third revolving speed.

In specific implementation, the driving that power source is capable of providing when operator demand's torque is greater than paralleling model is turned round When the driving torque that power source is capable of providing when square or operator demand's torque are less than series model, the driver is determined Demand torque meets the first condition.

When determining that operator demand's torque meets the first condition, step S73 is executed, conversely, then terminating to flow Journey.

S72: when clutch is in paralleling model, judge the acceleration of driving motor for negative value, and the acceleration Whether absolute value is greater than preset first threshold value or whether the revolving speed of the driving motor is less than default third revolving speed.It is being embodied In, the third revolving speed is the engine idle rotational.

When the clutch handles paralleling model, determine that the acceleration of the driving motor is negative value, and the acceleration When the absolute value of degree is greater than the revolving speed of the first threshold or the driving motor less than the third revolving speed, step is executed S74；Conversely, then terminating process.

S73: if judgement clutch is when be in series model, if can prevent power source premode from meeting driving Bigger driving torque is provided in the case where member's demand torque or series model is able to satisfy the power in the case where demand torque Whether the efficiency in source higher or series model be able to satisfy the engine noise vibration in the case where demand torque whether meet it is pre- If third condition.

It should be noted that the sequence of S71 and S73 can change, S71 can be first carried out, then execute S73, no matter S71 and How is the specific order of the S73, and limiting the invention, and all within protection scope of the present invention.

In specific implementation, in order to guarantee that power source can provide bigger power for vehicle, if can judge at clutch When series model, if the efficiency of the power source bigger driving torque of offer or the power source can be made whether higher.And it is The comfort for promoting vehicle drive, can judge whether the engine noise and vibration meet default third condition.

In an embodiment of the present invention, the third condition include: when the clutch is in non-paralleling model, it is described The efficiency of power source is greater than the efficiency when clutch is in paralleling model, and the noise of the vehicle and vibration are lower than default Threshold value.

In specific implementation, it can determine that power source efficiency is than tandem working mould under parallel operation mode according to real vehicle experience The high revolving speed point of formula, this revolving speed point is related to accelerator pedal position, indicates the efficient revolving speed point of correspondence under different load, is Description is convenient, this revolving speed point is known as the 4th revolving speed.When the revolving speed of driving motor is higher than four revolving speed, show work in parallel When operation mode, power source it is more efficient.

Equally, in the presence of the revolving speed point for generating larger noise and vibration when can determine parallel operation mode according to real vehicle experience, The revolving speed point for generating larger noise and vibration is related to accelerator pedal position, the correspondence noise and vibration under expression different load compared with This revolving speed point is known as the 5th revolving speed for convenience of description by big revolving speed point.Larger (the throttle of higher and load in engine speed Pedal position is deeper), it easily resonates, noise and vibration problem is obvious.I.e. when the revolving speed of driving motor is higher than the 5th revolving speed When, show that noise and vibration situation is more than preset threshold.According to the characteristic of power source, the 4th revolving speed is less than described 5th turn Speed, therefore the efficiency term that is considered of while being switched to parallel operation mode and noise and vibration condition do not conflict.

Operating mode is joined compared to pure motor due to tandem working mode again, engine can charge to battery to provide more More driving powers, therefore for same vehicle, the driving torque ability of tandem working mode is usually not less than pure motor mode Driving torque ability, it is thus possible to the efficiency for judging power source is gone by the characteristic of engine speed and noise and vibration situation is It is no to meet default third condition.

If for example when can judge that clutch is in series model by following methods, more whether the efficiency of the power source It is high: to judge whether the revolving speed of the driving motor is less than default 4th revolving speed；When the revolving speed of the driving motor is less than described the When four revolving speeds, the more efficient of power source when series model is determined.Also the efficiency of vehicle can be judged by following methods And whether noise and vibration situation meets default third condition, comprising: judges whether the revolving speed of the driving motor is greater than default Five revolving speeds；When the revolving speed of the driving motor is greater than five revolving speed, determine that the noise of the vehicle and Vibration Condition are full The foot third condition.

When determining that clutch is in series model, power source can be made to provide bigger driving torque or the power source When the noise of the more efficient or described engine and vibration meet the third condition, otherwise executing S74 then terminates.

S74: the clutch is switched into series model by paralleling model.

In specific implementation, when determining that clutch is in series model, power source can be made to provide bigger driving torque Or the more efficient or described engine of the power source noise and vibration meet the third condition or the driving motor Acceleration be negative value, and the absolute value of the acceleration is greater than the revolving speed of preset first threshold value or the driving motor and is less than institute When stating third revolving speed, the clutch is exited into the paralleling model, switches to other operating modes, for example, allow hand over into Enter the operating mode before the paralleling model, series model or pure motor mode can be also switched to according to corresponding situation. In this way, it is possible to guarantee that clutch works in the situation for making power source more efficient, while it can also ensure that the comfortable of driving Property.

To more fully understand those skilled in the art and realizing the present invention, corresponding above-mentioned clutch also provided below The HCU of the control method of device operating mode switching.

The structural schematic diagram of another HCU in the embodiment of the present invention as shown in Figure 8.The HCU can include: third Judging unit 4, the 4th judging unit 5 and the second switch unit 6, in which:

The third judging unit 4 is suitable for when clutch is in paralleling model, judges whether operator demand's torque is full The acceleration of the default first condition of foot or driving motor is negative value, and whether the absolute value of the acceleration is greater than default first threshold Whether the revolving speed of value or the driving motor is less than default third revolving speed；

4th judging unit 5, suitable for determining that operator demand's torque meets institute when the third judging unit 4 When stating first condition, if judgement clutch is in series model, if power source can be made to provide bigger driving torque or institute State power source whether efficiency higher or whether the engine noise and vibration meet default third condition；

Second switch unit 6 described in third judging unit 4, suitable for determining that clutch is in when the 4th judging unit 5 When series model, power source can be made to provide the more efficient or determining engine of bigger driving torque or the power source Noise and vibration meet driving motor described in the third condition or the third judging unit 4 revolving speed be greater than the third When whether the revolving speed of revolving speed or the driving motor is less than default third revolving speed, the clutch is exited into the paralleling model.

In specific implementation, the first condition, comprising:

In specific implementation, the third revolving speed is the engine idle rotational.

In specific implementation, the 4th judging unit 5, suitable for judging whether the revolving speed of the driving motor is less than default Four revolving speeds；

In specific implementation, the third condition, comprising: when the clutch is in non-paralleling model, the power source Efficiency be greater than the efficiency when clutch be in paralleling model, and the noise of the vehicle and vibration are lower than preset threshold.

In specific implementation, the 4th judging unit 5, suitable for judging whether the revolving speed of the driving motor is greater than default Five revolving speeds；

If it should be noted that when being in series model due to judgement clutch, if power source can be made to provide bigger Driving torque and judge whether the efficiency of power source and the noise and vibration situation of vehicle meet default third condition, the two judge It is to go to consider whether to switch over the operating mode of clutch from different angles, in short, in specific implementation, according to need It wants, if it is in order to provide better power performance to vehicle, when only can be in series model to clutch, if can make Power source provides bigger driving torque and is judged, and takes corresponding operation；If it is the noise in order to reduce vehicle, improve The comfort of vehicle, then when only can be in series model to clutch, the efficiency of power source and the noise and vibration situation of vehicle Whether satisfaction, which presets third condition, is judged.

, it is understood that as needed, above scheme can be combined with other schemes separately or together also and answered With.Specific embodiment used by above-described embodiment is merely to illustrate the present invention, does not cause to protection scope of the present invention It limits, as long as when can satisfy any one described Rule of judgment, and can accordingly execute the work of clutch operating mode switching Work.

Fig. 9 shows the control method of one of embodiment of the present invention clutch operating mode switching, the controlling party Method can include:

S91: when clutch is in paralleling model, judge whether operator demand's torque meets default first condition.

In specific implementation, in order to guarantee to provide bigger power for vehicle, can when clutch is in paralleling model, Judge whether operator demand's torque meets default first condition

In an embodiment of the present invention, when operator demand's torque is greater than paralleling model, power source is capable of providing When the driving torque that power source is capable of providing when driving torque or operator demand's torque are less than series model, institute is determined It states operator demand's torque and meets the first condition.

When determining that operator demand's torque meets the first condition, S93 is executed；Otherwise, then terminate process.

S92: the acceleration of driving motor is judged for negative value, and whether the absolute value of the acceleration is greater than default first threshold Whether the revolving speed of value or the driving motor is less than the third revolving speed.

When driving motor acceleration be negative value, and the absolute value of the acceleration be greater than preset first threshold value or the drive When the revolving speed of dynamic motor is less than the third revolving speed, step S94 is executed；Conversely, then terminating process.

S93: if judgement clutch is when be in series model, if can prevent power source premode from meeting driving There is provided bigger driving torque in the case where member's demand torque or series model whether be able to satisfy it is described in the case where demand torque Power source it is more efficient.

In specific implementation, if can judge that clutch is in series model by the following method, the power source Whether efficiency is higher, first determines whether the revolving speed of the driving motor is less than default 4th revolving speed, then when the driving electricity When the revolving speed of machine is less than four revolving speed, the more efficient of power source when series model is determined.

When determining that clutch is in series model, power source can be made to provide bigger driving torque or the power source The acceleration of the more efficient or described driving motor is negative value, and the absolute value of the acceleration is greater than the first threshold or institute When stating the revolving speed of driving motor less than the third revolving speed, S94 is executed；Otherwise, then terminate process.

It should be noted that the sequence of S91 and S93 can change, S91 can be first carried out, then execute S93, no matter S91 and How is the specific order of the S93, and limiting the invention, and all within protection scope of the present invention.Specific In implementation, if after not will lead to engine misses, can judge when that can ensure that clutch is switched to parallel operation mode If clutch is in series model, if power source can be made to provide bigger driving torque, if can also judge at clutch When series model, whether the efficiency of the power source is higher.

S94: the clutch is switched into series model by paralleling model.

In specific implementation, the clutch is switched into series model by paralleling model, so that power source can Bigger power is provided for vehicle, guarantees the safety of vehicle.

To more fully understand those skilled in the art and realizing the present invention, Figure 10 is shown to be shown corresponding to Fig. 9 Embodiment in HCU, the HCU can include: the 9th judging unit 101, the tenth judging unit 102 and the 5th switch unit 103, in which:

9th judging unit 101 is suitable for when clutch is in paralleling model, whether judges operator demand's torque The acceleration for meeting default first condition or driving motor is negative value, and whether the absolute value of the acceleration is greater than default first Whether the revolving speed of threshold value or the driving motor is less than the third revolving speed, the first condition, comprising: when the driver needs The driving torque or operator demand's torque that power source is capable of providing when torque being asked to be greater than paralleling model are less than series model When power source be capable of providing driving torque when, determine that operator demand's torque meets the first condition；

Tenth judging unit 102, suitable for sentencing when determining that operator demand's torque meets the first condition If disconnected clutch is in series model, if can make the efficiency of the power source bigger driving torque of offer or the power source is It is no higher；

5th switch unit 103, suitable for when determining that clutch is in series model, power source can provide more The acceleration of the more efficient or described driving motor of big driving torque or the power source is negative value, and the acceleration is exhausted When being greater than the revolving speed of the first threshold or the driving motor less than the third revolving speed to value, by the clutch by parallel connection Pattern switching is to series model.

Figure 11 shows the control method of one of embodiment of the present invention clutch operating mode switching, the method energy Enough include:

S111: when clutch is in paralleling model, judge whether operator demand's torque meets default first condition.

In an embodiment of the present invention, when operator demand's torque is less than series model, power source is capable of providing When driving torque, determine that operator demand's torque meets the first condition.

When determining that operator demand's torque meets the first condition, S112 is executed；Conversely, then terminating.

S112: judge whether the engine noise and vibration meet default third condition.

In an embodiment of the present invention, the third condition, comprising: the noise of the vehicle and vibration are lower than default threshold Value.

In specific implementation, whether the noise and vibration situation for judging vehicle meets default third condition, first determines whether Whether the revolving speed of the driving motor is greater than default 5th revolving speed, then when the revolving speed of the driving motor is greater than described 5th turn When fast, determine that the noise of the vehicle and Vibration Condition meet the third condition.

When the noise and vibration that determine the engine meet the third condition, S113 is executed；Conversely, then terminating.

S113: the clutch is switched into series model by paralleling model.

It in specific implementation, can be when the noise and vibration for determining the engine in order to promote the driver comfort of vehicle It is dynamic when meeting the third condition, the clutch is switched into series model by paralleling model.

To more fully understand those skilled in the art and realizing the present invention, Figure 12 is shown to be shown corresponding to Figure 11 Embodiment in HCU structure chart, the HCU can include: the 11st judging unit 111, the 12nd judging unit 112 and 6th switch unit 113, in which:

11st judging unit 111 is suitable for when clutch is in paralleling model, judges whether operator demand's torque is full The default first condition of foot, the driving torque or institute that power source is capable of providing when operator demand's torque is greater than paralleling model When the driving torque that power source is capable of providing when stating operator demand's torque less than series model, determine that the operator demand turns round Square meets the first condition；

12nd judging unit 112, suitable for judging when determining that operator demand's torque meets the first condition Whether the engine noise and vibration meet default third condition, the third condition, comprising: are in non-in the clutch When paralleling model, the efficiency of the power source is greater than the efficiency when clutch is in paralleling model, and the vehicle is made an uproar Sound and vibration are lower than preset threshold；

6th switch unit 113, suitable for inciting somebody to action when the noise and vibration that determine the engine meet the third condition The clutch switches to series model by paralleling model.

Figure 13 shows the control method of one of embodiment of the present invention clutch operating mode switching, the method energy Enough include:

S131: when clutch is in paralleling model, judge the acceleration of driving motor for negative value, and the acceleration Whether absolute value is greater than preset first threshold value or whether the revolving speed of the driving motor is less than default third revolving speed.

When determine the driving motor acceleration be negative value, and the absolute value of the acceleration be greater than the first threshold Or the revolving speed of the driving motor be less than the third revolving speed when, execute S132；Otherwise, then terminate.

S132: the clutch is switched into series model by paralleling model.

In specific implementation, when the acceleration for determining the driving motor is negative value, and the absolute value of the acceleration is big When the revolving speed of the first threshold or the driving motor is less than the third revolving speed, the clutch is cut by paralleling model Series model is shifted to, can guarantee that engine will not cause to stop working since revolving speed is too low.

To more fully understand those skilled in the art and realizing the present invention, Figure 14 is shown corresponding to described in Figure 13 Clutch operating mode switching control method HCU, the HCU can include: that the 13rd judging unit 141 and the 7th is cut Change unit 142, in which:

13rd judging unit 141 is suitable for when clutch is in paralleling model, judges the acceleration of driving motor For negative value, and the absolute value of the acceleration whether be greater than preset first threshold value or the driving motor revolving speed whether be less than it is pre- If third revolving speed, the third revolving speed is the engine idle rotational；

7th switch unit 142, suitable for being negative value when the acceleration for determining the driving motor, and the acceleration Absolute value when being greater than the revolving speed of the first threshold or the driving motor and being less than the third revolving speed, by the clutch by Paralleling model switches to series model.

Figure 15 shows the control method of one of embodiment of the present invention clutch operating mode switching, the controlling party Method can include:

S151: when clutch is in paralleling model, judge whether operator demand's torque meets default first condition.

In specific implementation, the driving that power source is capable of providing when operator demand's torque is greater than paralleling model is turned round When square, determine that operator demand's torque meets the first condition.

When determining that operator demand's torque meets the first condition, S152 is executed；Otherwise, then terminate.

S152: if judgement clutch is in series model, if power source can be made to provide bigger driving torque.

In specific implementation, in order to enable power source provides bigger power for vehicle, if can judge, clutch is in When series model, if power source can be made to provide bigger driving torque.

When determining that clutch is in series model, when power source can be made to provide bigger driving torque, S153 is executed；Instead It, then terminate process.

S153: the clutch is switched into series model by paralleling model.

In specific implementation, the clutch can be switched to series model by paralleling model.Pass through this switching side Case can guarantee the dynamic property of vehicle drive

To more fully understand those skilled in the art and realizing the present invention, can be realized referring to Figure 16 explanation A kind of HCU of the above method, the HCU can include: that the 14th judging unit 161, the 15th judging unit 162 and the 8th are cut Change unit 163, in which:

14th judging unit 161 is suitable for when clutch is in paralleling model, judges that operator demand's torque is It is no to meet default first condition, the driving torque that power source is capable of providing when operator demand's torque is greater than paralleling model Or when operator demand's torque driving torque that power source is capable of providing when being less than series model, determine that the driver needs Torque is asked to meet the first condition；

15th judging unit 162, suitable for when determining that operator demand's torque meets the first condition, If judgement clutch is in series model, if power source can be made to provide bigger driving torque；

8th switch unit 163, suitable for when determining that clutch is in series model, power source can provide more When big driving torque, the clutch is switched into series model by paralleling model.

Figure 17 shows the control method of one of embodiment of the present invention clutch operating mode switching, the method energy Enough include:

S171: when clutch is in paralleling model, judge whether operator demand's torque meets default first condition.

In an embodiment of the present invention, when operator demand's torque is greater than paralleling model, power source is capable of providing When driving torque, it can determine that operator demand's torque meets the first condition.

When determining that operator demand's torque meets the first condition, S172 is executed；Conversely, then terminating process.

S172: if judgement clutch is in series model, whether the efficiency of the power source is higher.

In specific implementation, when can judge series model by the following method, whether the efficiency of the power source is higher: Judge whether the revolving speed of the driving motor is less than default 4th revolving speed, then when the revolving speed of the driving motor is less than described the When four revolving speeds, the more efficient of power source when series model is determined.It is described dynamic when determining that clutch is in series model Power source it is more efficient when, execute S173；Conversely, then terminating.

S173: the clutch is switched into series model by paralleling model.

In specific implementation, in order to guarantee the dynamic property of vehicle drive, can when determining that clutch is in series model, The power source it is more efficient when, the clutch is switched into series model by paralleling model.

To more fully understand those skilled in the art and realizing the present invention, Figure 18 is shown to be shown corresponding to Figure 17 Embodiment in HCU, the HCU can include: the 16th judging unit 181, the 17th judging unit 182 and the 9th switching Unit 183, in which:

16th judging unit 181 is suitable for when clutch is in paralleling model, judges that operator demand's torque is It is no to meet default first condition, the driving torque that power source is capable of providing when operator demand's torque is greater than paralleling model Or when operator demand's torque driving torque that power source is capable of providing when being less than series model, determine that the driver needs Torque is asked to meet the first condition；

17th judging unit 182, suitable for when determining that operator demand's torque meets the first condition, If judgement clutch is in series model, whether the efficiency of the power source is higher；

9th switch unit 183, suitable for when determining that clutch is in series model, the efficiency of the power source is more The clutch is switched to series model by paralleling model by Gao Shi.

The process that Figure 19 shows the control method of the switching of another clutch operating mode in the embodiment of the present invention is shown It is intended to.

S191: when clutch is in paralleling model, judge whether operator demand's torque meets default first condition.

When determining that operator demand's torque meets the first condition, S193 is executed；Otherwise, then terminate process.

S192: the acceleration of driving motor is judged for negative value, and whether the absolute value of the acceleration is greater than default first Whether the revolving speed of threshold value or the driving motor is less than the third revolving speed.

When driving motor acceleration be negative value, and the absolute value of the acceleration be greater than preset first threshold value or the drive When the revolving speed of dynamic motor is less than the third revolving speed, step S194 is executed；Conversely, then terminating process.

S193: if judgement clutch is when being in series model, if can prevent power source premode driven from meeting Bigger driving torque is provided in the case where the person's of sailing demand torque or whether series model is able to satisfy institute in the case where demand torque State the more efficient of power source.

When determining that clutch is in series model, power source can be made to provide bigger driving torque or the power source The acceleration of the more efficient or described driving motor is negative value, and the absolute value of the acceleration is greater than the first threshold or institute When stating the revolving speed of driving motor less than the third revolving speed, S194 is executed；Otherwise, then terminate process.

It should be noted that the sequence of S191 and S193 can change, no matter S191 can be first carried out, then execute S193 How are the specific order of S191 and the S193, and limiting the invention, and all within protection scope of the present invention. In specific implementation, if when that can ensure that clutch is switched to parallel operation mode, after not will lead to engine misses, energy If enough judgement clutches are when be in series model, if the bigger driving torque of power source offer can be provided, if can also judge from When clutch is in series model, whether the efficiency of the power source is higher.

S194: the clutch is switched into series model by paralleling model.

To more fully understand those skilled in the art and realizing the present invention, Figure 20 is shown to be shown corresponding to Figure 19 Embodiment in HCU, the HCU can include: the 18th judging unit 201, the 19th judging unit 202 and the tenth switching Unit 203, in which:

18th judging unit 201 is suitable for when clutch is in paralleling model, judges that operator demand's torque is The no acceleration for meeting default first condition or driving motor is negative value, and whether the absolute value of the acceleration is greater than default the Whether the revolving speed of one threshold value or the driving motor is less than the third revolving speed, the first condition, comprising: as the driver The driving torque or operator demand's torque that power source is capable of providing when demand torque is greater than paralleling model are less than series connection mould When the driving torque that power source is capable of providing when formula, determine that operator demand's torque meets the first condition；

19th judging unit 202, suitable for when determining that operator demand's torque meets the first condition, If judgement clutch is in series model, if power source can be made to provide the efficiency of bigger driving torque or the power source It is whether higher；

Tenth switch unit 203, suitable for when determining that clutch is in series model, power source can provide more The acceleration of the more efficient or described driving motor of big driving torque or the power source is negative value, and the acceleration is exhausted When being greater than the revolving speed of the first threshold or the driving motor less than the third revolving speed to value, by the clutch by parallel connection Pattern switching is to series model.

The skilled artisan will appreciate that all or part of the steps in the various methods of above-described embodiment is energy Enough that relevant hardware is instructed to complete by program, which can be stored in store in computer readable storage medium Medium can include: ROM, RAM, disk or CD etc..

Although present disclosure is as above, present invention is not limited to this.Anyone skilled in the art are not departing from this It in the spirit and scope of invention, can make various changes or modifications, therefore protection scope of the present invention should be with claim institute Subject to the range of restriction.

Claims

1. a kind of control method of clutch operating mode switching characterized by comprising

When the clutch is in non-parallel operation mode, judge whether the operating condition of engine and driving motor meets default One condition；

When the operating condition of the engine and driving motor meets the first condition, judge power source premode cannot expire In the case where sufficient operator demand's torque, if the clutch is in paralleling model, if the power source can be made to provide Bigger driving torque, or judge whether the efficiency of the power source and the noise and vibration situation of vehicle meet default second condition；

When determining that the clutch is in paralleling model, the power source can be made to provide bigger driving torque or the power source Efficiency and noise and vibration situation when meeting the second condition, the clutch is switched to paralleling model work；

The default first condition, comprising: the revolving speed that engine is in starting state and driving motor is greater than the idling of engine Revolving speed.

2. the control method of clutch operating mode according to claim 1 switching, which is characterized in that if it is described from When clutch is in paralleling model, if power source can be made to provide bigger driving torque, comprising:

When the first peak torque that power source is capable of providing when determining that operator demand's torque is greater than series model, parallel connection is judged Whether the second peak torque that the power source is capable of providing when mode is greater than first peak torque；

When determining that second peak torque is greater than first peak torque, determine that the clutch is in paralleling model, Power source can be made to provide bigger driving torque.

3. the control method of clutch operating mode switching according to claim 1, which is characterized in that the Article 2 Part, comprising: when the clutch is in paralleling model, the efficiency of the power source is greater than the clutch and is in present mode When efficiency, and the noise and vibration parameter of the vehicle be lower than preset threshold.

4. the control method of clutch operating mode switching according to claim 3, which is characterized in that the judgement power Whether the efficiency and noise and vibration situation in source meet default second condition, comprising:

When the revolving speed of the driving motor is greater than default first revolving speed and is less than default second revolving speed, determine in the clutch Efficiency in power source described in paralleling model is greater than the efficiency when clutch is in present mode, and the vehicle is made an uproar Sound vibration parameters are lower than preset threshold.

5. a kind of control method of clutch operating mode switching characterized by comprising

When the operating condition of the engine and the driving motor meets the first condition, judge power source premode not In the case where being able to satisfy operator demand's torque, if the clutch is in paralleling model, if the power source can be made Bigger driving torque is provided；

When determining that the clutch is in paralleling model, when the power source can be made to provide bigger driving torque, will it is described from Clutch is switched to paralleling model work；

6. the control method of clutch operating mode according to claim 5 switching, which is characterized in that if the judgement from When clutch is in paralleling model, if power source can be made to provide bigger driving torque, comprising:

When the first peak torque that power source is capable of providing when determining that operator demand's torque is greater than series model, parallel connection is judged Whether the second peak torque that power source is capable of providing when mode is greater than first peak torque；

When determining that second peak torque is greater than first peak torque, determine that clutch is in paralleling model, it can Power source is set to provide bigger driving torque.

7. a kind of control method of clutch operating mode switching characterized by comprising

When the operating condition of the engine and driving motor meets the first condition, the efficiency and noise and vibration of power source are judged Whether situation meets default second condition；

When the efficiency and noise and vibration situation that determine the power source meet the second condition, the clutch is switched to Paralleling model work；

The default first condition, comprising: the engine is in starting state and the revolving speed of driving motor is greater than engine Idling speed.

8. the control method of clutch operating mode switching according to claim 7, which is characterized in that the Article 2 Part, comprising: the noise and vibration parameter of vehicle is lower than preset threshold.

9. the control method of clutch operating mode switching according to claim 8, which is characterized in that the judgement power Whether the efficiency and noise and vibration situation in source meet default second condition, comprising:

When the revolving speed of the driving motor is greater than default first revolving speed and is less than default second revolving speed, the efficiency of power source is determined And noise and vibration situation meets the second condition.

10. a kind of HCU characterized by comprising

First judging unit is suitable for when clutch is in non-parallel operation mode, judges the operating condition of engine and driving motor Whether satisfaction presets first condition；

Second judgment unit, suitable for judging power when the operating condition of the engine and driving motor meets the first condition Source premode cannot meet operator demand's torque in the case where, if the clutch is in paralleling model, if energy So that the power source is provided bigger driving torque, or judge the power source efficiency and vehicle noise and vibration situation whether Meet default second condition；

First switch unit is suitable for being in paralleling model when the determining clutch, the power source can be made to provide bigger drive When the efficiency and noise and vibration situation of dynamic torque or the power source meet the second condition, the clutch is switched to simultaneously The work of gang mould formula；

11. HCU according to claim 10, which is characterized in that the second judgment unit, comprising:

First judgment sub-unit, power source is capable of providing when suitable for judging whether operator demand's torque is greater than series model One peak torque；

Second judgment sub-unit, suitable for determining that operator demand's torque is greater than series model when first judgment sub-unit When power source be capable of providing the first peak torque when, the second peak torque for judging that power source is capable of providing when paralleling model is It is no be greater than first peak torque, and when determine second peak torque be greater than first peak torque when, determine from Clutch is in paralleling model, and power source can be made to provide bigger driving torque.

12. HCU according to claim 10, which is characterized in that the second condition, comprising: be in the clutch When paralleling model, the efficiency of the power source is greater than the efficiency when clutch is in present mode, and the vehicle is made an uproar Sound vibration parameters are lower than preset threshold.

13. HCU according to claim 12, which is characterized in that the second judgment unit is suitable for judging the driving electricity Whether the revolving speed of machine is greater than default first revolving speed and is less than default second revolving speed；

14. a kind of HCU characterized by comprising

5th judging unit is suitable for when clutch is in non-parallel operation mode, judges the operating condition of engine and driving motor Whether satisfaction presets first condition；

6th judging unit, suitable for judging power when the operating condition of the engine and driving motor meets the first condition Source premode cannot meet operator demand's torque in the case where, if the clutch is in paralleling model, if energy Power source is enough set to provide bigger driving torque；

Third switch unit is suitable for being in paralleling model when determining clutch, when power source can be made to provide bigger driving torque, Clutch is switched to paralleling model work；

15. a kind of HCU characterized by comprising

7th judging unit is suitable for when clutch is in non-parallel operation mode, judges the operating condition of engine and driving motor Whether satisfaction presets first condition；

8th judging unit, suitable for judging power when the operating condition of the engine and driving motor meets the first condition Whether the efficiency and noise and vibration situation in source meet default second condition；

4th switch unit, suitable for when the efficiency and noise and vibration situation that determine the power source meet the second condition, Clutch is switched to paralleling model work；