CN106585620B

CN106585620B - A kind of powershift control method, device and HCU

Info

Publication number: CN106585620B
Application number: CN201510657992.XA
Authority: CN
Inventors: 仇杰; 孙贤安
Original assignee: SAIC Motor Corp Ltd
Current assignee: SAIC Motor Corp Ltd
Priority date: 2015-10-13
Filing date: 2015-10-13
Publication date: 2019-07-16
Anticipated expiration: 2035-10-13
Also published as: CN106585620A

Abstract

A kind of powershift control method, device and HCU, which comprises HCU determines whether that TCU shifts gears；The TCU is allowed to shift gears when the HCU is determined, and when TCU execution synchronizer pre-engagement movement, a variety of power sources are switched to a kind of power source of motor by the HCU；The HCU is consistent by the revolving speed of the rotational speed regulation of the motor to transmission input shaft corresponding with gear after shift；When the TCU completes gear shifting action, a kind of power source of the motor is switched back into a variety of power sources by the HCU.Driving ride comfort can be promoted using the above scheme, and reduces shift time.

Description

A kind of powershift control method, device and HCU

Technical field

The present invention relates to automotive field more particularly to a kind of powershift control methods, device and HCU.

Background technique

In modern society, automobile plays more and more important role, 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, abbreviation HEV) it comes into being.When hybrid vehicle is run, there are three types of modes: pure engine mode, pure motor mould Formula and hybrid mode.Wherein: pure engine mode, only engine provide power.Pure motor mode, only motor provide Power.Hybrid mode, engine and motor provide power simultaneously.And mixed movement controller (Hybrid Control Unit, HCU) be entire vehicle control core, be mainly responsible for coordinate engine management system (Engine Management System, EMS), gear box control unit (Transmission Control Unit, TCU) and electric machine controller (Motor Controller Unit, MCU) work, and it is responsible for the high and low pressure fulgurite reason and the detection of failure of entire dynamical system.

Existing hybrid vehicle is under hybrid mode, since two kinds of power sources work at the same time, in shift process, and warp Revolving speed is adjusted frequently with the mode adjusted simultaneously to two kinds of power sources.

But in this case, different with the characteristic of motor due to engine, it may result in and drive ride comfort not It is good.

Summary of the invention

Problems solved by the invention is how to promote driving ride comfort.

To solve the above problems, the present invention provides a kind of powershift control method, which comprises

HCU determines whether that TCU shifts gears；

The TCU is allowed to shift gears when the HCU is determined, and when TCU execution synchronizer pre-engagement movement, the HCU A variety of power sources are switched to a kind of power source of motor；

The HCU by the rotational speed regulation of the motor to transmission input shaft corresponding with gear after shift revolving speed one It causes；

When the TCU completes gear shifting action, a kind of power source of the motor is switched back into a variety of power by the HCU Source.

Optionally, the HCU wraps the revolving speed of the rotational speed regulation of the motor corresponding clutch of gear to after shifting gears It includes:

The torque request signal that the HCU is sent according to the TCU carries out rotational speed regulation extremely and after shift to the motor The revolving speed of the corresponding transmission input shaft of gear is consistent.

Optionally, the method also includes:

When the HCU determines the corresponding clutch transmission torque of current gear lower than preset first threshold value, according to described The torque request signal that TCU is sent carries out rotational speed regulation to transmission input shaft corresponding with gear after shift to the motor Revolving speed is consistent.

Optionally, the HCU determines whether that TCU shifts gears, comprising:

The HCU is according to the motor status, the corresponding battery charge state of the motor and mixed dynamic model block clutch shape State determines whether that TCU shifts gears.

Optionally, which comprises

When the corresponding battery charge of the motor be enough to provide a variety of power sources torque and, and the mixed dynamic model block When clutch is not in self study or adaptive model, the HCU, which is determined, allows the TCU to shift gears.

The embodiment of the present invention provides a kind of power switching control device, and described device includes:

First judging unit, suitable for determining whether that TCU shifts gears；

First switch unit is suitable for allowing the TCU to shift gears when first judging unit determines, and the TCU is executed When synchronizer pre-engagement acts, a variety of power sources are switched to a kind of power source of motor；

Unit is adjusted, turn suitable for the corresponding transmission input shaft of gear after the rotational speed regulation of the motor is extremely shifted gears Speed；

Second switch unit is suitable for that a kind of power source of the motor is switched back into institute when the TCU completes gear shifting action State a variety of power sources.

Optionally, the adjusting unit, the torque request signal suitable for being sent according to the TCU turn the motor The revolving speed that speed is adjusted to transmission input shaft corresponding with gear after shift is consistent.

Optionally, described device further include: second judgment unit is suitable for judging that the corresponding clutch transmitting of current gear turns When whether square is lower than preset first threshold value；

The adjusting unit, suitable for determining that the corresponding clutch transmission torque of current gear is low in the second judgment unit When the first threshold, by the revolving speed one of the rotational speed regulation of the motor to transmission input shaft corresponding with gear after shift It causes.

Optionally, first judging unit is suitable for according to the motor status, the corresponding battery charge shape of the motor State and mixed dynamic model block clutch state determine whether that TCU shifts gears, when the corresponding battery charge of the motor is enough to provide institute State a variety of power sources torque and and mixed dynamic model block clutch when being not in self study or adaptive model, determining allows institute State TCU shift.

The embodiment of the present invention provides a kind of HCU, including above-described power switching control device.

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

When TCU execute synchronizer pre-engagement movement when, HCU by the way that two kinds of power sources are switched to a kind of power source of motor, And the revolving speed one of the rotational speed regulation of the motor to transmission input shaft corresponding with gear after shift is shown into realization shift.By Can be convenient control in single power source, can to avoid the torque characteristics because of two kinds of power sources it is different caused by it is uncoordinated, thus Driving ride comfort can be promoted.And motor own closed loop controls, when being responded rapidly to control signal, therefore shift can also be shortened Between.Moreover, only using a kind of motor this power source can be improved the consistency of vehicle performance.

Detailed description of the invention

Fig. 1 is the process that hybrid vehicle shifts to 3 gears under mixed dynamic model formula by stepping on the gas from 2 gears in the prior art Figure；

Fig. 2 is the flow diagram of one of embodiment of the present invention powershift control method；

Fig. 3 is that one of embodiment of the present invention hybrid vehicle shifts to 3 from 2 gears by stepping on the gas under mixed dynamic model formula The procedure chart of gear；

Fig. 4 is the flow diagram of another kind powershift control method of the embodiment of the present invention；

Fig. 5 is the structural schematic diagram of one of embodiment of the present invention power switching control device.

Specific embodiment

Currently, hybrid vehicle provides institute under hybrid mode, by two kinds of power sources of motor and engine simultaneously The driving dynamics of automobile are stated, and in this case if to execute gear shifting action, it is necessary to it uses to two kinds of power sources simultaneously The mode of control adjusts the revolving speed of the revolving speed clutch corresponding with gear after shift of power source.

In order to enable those skilled in the art more fully understand that shift process, Fig. 1 show hybrid power in the prior art Automobile shifts to the procedure chart of 3 gears under mixed dynamic model formula by stepping on the gas from 2 gears.Entire shifting up operation can be divided into (1), (2) and (3) control process, in which: (1) for TCU is controlled to synchronizer pre-engagement the stage；(2) for TCU to clutch control and EMS and HCU drop turns round the control stage；(3) for TCU is controlled to synchronizer off-gear the stage.

Fig. 1 (a) is throttle signal change curve；Fig. 1 (b) is DCT rotation speed change curve graph, and solid line indicates that motor turns Speed, solid dotted line indicate that 2 revolving speed of DCT input shaft, modest dotted line indicate 1 revolving speed of DCT input shaft；Fig. 1 (c) is the request of TCU revolving speed Signal intensity curve graph；Fig. 1 (d) is DCT torque change curve, and solid line indicates TCU torque requests, and solid dotted line indicates clutch Device 2 transmits torque, and modest dotted line indicates that clutch 1 transmits torque；Fig. 1 (e) is hybrid power actual torque change curve；Figure 1 (f) is synchronizer change in location curve graph, and solid line indicates 2 gear synchronizer positions, and modest dotted line indicates 3 gear synchronizer positions；Figure 1 (g) is speed change curve.

Vehicle is in 2 gear driving processes, and driver steps on the gas, when TCU detects that the speed of the vehicle reaches upshift Synchronizer pre-engagement point when, start to execute the movement of synchronizer pre-engagement, from Fig. 1 (f) it can be seen that, in 100ms to 600ms's In period, therefrom position is shifted on the gear of 3 gears for the synchronizer position of 1,3 gears, and it is dynamic to indicate that synchronizer has completed pre-engagement Make.

And correspondingly, referring to the modest dotted line in Fig. 1 (b), due to clutch dragging torque characteristic, before 100ms, certainly The odd gear input shaft 1 of dynamic speed changer, i.e. shown in modest dotted line in Fig. 1 (b), even gear input shaft 2, i.e. in Fig. 1 (b) Solid dotted line shown in and motor revolving speed it is consistent, when 3 gear gears synchronizer completed pre-engagement movement when, according to speed ratio Between relationship, the revolving speed for obtaining the higher power source of gear is lower, thus the revolving speed of the odd gear input shaft 1 of automatic transmission drop It is low, it can see the odd number shelves of the automatic transmission of the representative of the modest dotted line in corresponding Fig. 1 (b) at or so 400ms time point The revolving speed inflection point of position input shaft 1.

Then, since gear will change to 3 gears from 2 grades, so 2 grades of corresponding clutches clutch corresponding with 3 gears The interaction for carrying out transmitting torque that is to say that the torque of the corresponding clutch transmitting of 2 gears slowly reduces, and 3 gears are corresponding Clutch transmitting torque slowly increase, for details, reference can be made to Fig. 1 (d).

When the torque that the corresponding clutch 2 of 2 gears transmits slowly reduces the torque value of the most Half engagement point of clutch, than When such as can be the transmitting torque of 3Nm, HCU can be controlled the revolving speed of motor according to the torque request signal that TCU is sent, So that the revolving speed of motor automatic transmission input shaft corresponding with 3 gears, i.e. DCT shown in modest dotted line in Fig. 1 (b) is defeated The revolving speed for entering axis 2 is consistent, with reference to the torque request signal that the TCU shown in solid in Fig. 1 (d) is sent, since 3 gears are corresponding The revolving speed of automatic transmission input shaft is lower relative to the revolving speed of the corresponding automatic transmission of 2 gears, so the torque in (d) is asked Seeking signal is downward trend.

Correspondingly, the motor speed in Fig. 1 (b) shown in solid line is correspondingly become with the torque request signal in (d) Change, until the input shaft rotating speed of the revolving speed of motor automatic transmission corresponding with 3 gears is consistent in 1600ms.At the same time, Referring to three lines in Fig. 1 (e), as the torque request signal in (d) is also correspondingly being changed, this is because EMS with HCU is in the torque for adjusting engine and motor respectively.But it can see engine shown in the modest dotted line in Fig. 1 (e) and turn Square is declining as certain slope is presented in the torque request signal in (d), but actual motor torque shown in solid dotted line is but It is basic to keep declining with the consistent shape of torque request signal in (d), that is to say, that motor is for torque request signal It responds faster and more accurate relative to response of the engine for torque request signal.

When 1600ms in Fig. 1, referring to the revolving speed automatic transmission corresponding with 3 gears of motor known to Fig. 1 (b) The revolving speed of input shaft is consistent, and due to vehicle will with power source torque size ratio that 3 gears need when driving with 2 gears when driving The power source torque needed is bigger, so then needing to increase the torque of power source can provide sufficiently large traction for vehicle Power, during 1600ms to 1900ms, it can be seen that three lines for representing power source actual torque of (e) in Fig. 1 exist As the TCU torque request signal that solid line represents in (d) constantly increases.

The song that the variation of engine actual torque is represented in the curve and (e) of actual motor torque variation is represented in comparison (e) The trend of line can see, since motor is different from the torque characteristics of engine, sound of the two to identical torque request signal Should be not identical, this will reduce the ride comfort driven.And it is opposite for the response of torque request signal to can see engine Slower in response of the motor for torque request signal, this will increase the time of shift, it is clear that this is unfavorable.

In 1900ms, the torque of power source has been enough to provide the tractive force travelled with 3 gears for the vehicle, then can be with Off-gear movement is executed, i.e., 24 grades of synchronizer positions are pushed on middle position, but since hydraulic response needs the regular hour, so As shown in Fig. 1 (f), the practical movement for just really starting to execute off-gear in 1980ms.

The movement of de- 2 gear is completed in 2100ms, the TCU, vehicle is formally travelled with 3 grades of speed, also Complete entire gear shifting action.

It can see from shift process shown in fig. 1, in such case, since engine is different with the characteristic of motor, than If response of the engine to control signal is slower relative to motor, will lead to drive ride comfort so bad and shift can be extended Time.

Further, since the mechanostructural property of engine will lead to it is larger in different vehicle shift time otherness, also without Method guarantees vehicle performance consistency.

In view of the above-mentioned problems, the embodiment of the invention provides powershift control method, device and HCU.When the TCU is held When row synchronizer pre-engagement acts, by the way that two kinds of power sources are switched to a kind of power source of motor, and by the revolving speed of the motor The revolving speed one for being adjusted to transmission input shaft corresponding with gear after shift shows realization shift.

Since single power source can be convenient synchronously control, can be to avoid the torque characteristics difference because of two kinds of power sources caused by It is uncoordinated, so as to promote driving ride comfort, and motor own closed loop controls, rapidly to the response of control signal, therefore can also To shorten shift time.Moreover, the consistency that a kind of motor this power source ensures that vehicle performance is only used.

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. 2 shows one of embodiment of the present invention powershift control methods, below with reference to Fig. 2 to powershift Specific rate-determining steps are introduced:

S21:HCU determines whether that TCU shifts gears.

In specific implementation, going on smoothly in order to ensure the whole process of follow-up driving force switching control, the HCU can be with Determine whether that TCU shifts gears.When the HCU allows the TCU to execute gear shifting action, S22 is executed；Conversely, then terminating.

In specific implementation, HCU can from judge there are many angle and decide whether allow TCU shift gears.Such as it can root It determines whether that TCU shifts gears according to motor status, can also judge whether to permit according to the corresponding battery charge state of the motor Perhaps TCU shifts gears, and can also determine whether that TCU shifts gears according to dynamic model block clutch state is mixed, the mixed dynamic model block clutch Clutch in the non-DCT.

In an embodiment of the present invention, the HCU is determining that it is described more that the corresponding battery charge of the motor is enough to provide The torque of kind of power source and, and when the mixed dynamic model block clutch is not in self study or adaptive model, determine described in allowing TCU shift.

S22: judge whether the TCU executes the movement of synchronizer pre-engagement.

In specific implementation, in order to reduce shift time, it can be determined that whether TCU executes the movement of synchronizer pre-engagement.? When determining that the TCU starts to execute the movement of synchronizer pre-engagement, S23 is executed；Conversely, then terminating.

A variety of power sources are switched to a kind of power source of motor by S23: the HCU.

In specific implementation, a variety of power sources can be switched to a kind of power source of motor by the HCU, in this way can be at it Direct torque, can be to avoid the non_uniform response of a variety of power sources the problem of, so as to mention, only are carried out to single power source afterwards Rise the ride comfort driven.Also, this power source of motor can respond rapidly to control signal due to own closed loop control system, Therefore the time of shift can also be promoted.

Moreover, for power source this for engine, due to its own mechanical property, cause individual difference big, It not can guarantee the consistency of vehicle performance, and a variety of power sources be switched to after this power source of motor, so that it may guarantee vehicle The consistency of performance.

In order to enable those skilled in the art more fully understand the above technical effect, shown herein in Fig. 3 of the invention real Apply a kind of powershift procedure chart in example.Entire shifting up operation can be divided into (1), (2) and (3) control process, in which: (1) be TCU controls the stage to synchronizer pre-engagement；(2) for TCU is turned round to clutch control and EMS and HCU drop the control stage；It (3) is TCU Stage is controlled to synchronizer off-gear.

Fig. 3 (a) is throttle signal change curve；Fig. 3 (b) is DCT rotation speed change curve graph, and solid line indicates that motor turns Speed, solid dotted line indicate that 2 revolving speed of DCT input shaft, modest dotted line indicate 1 revolving speed of DCT input shaft；Fig. 3 (c) is the request of TCU revolving speed Signal intensity curve graph；Fig. 3 (d) is DCT torque change curve, and solid line indicates TCU torque requests, and solid dotted line indicates clutch Device 2 transmits torque, and modest dotted line indicates that clutch 1 transmits torque；Fig. 3 (e) is hybrid power actual torque change curve；Figure 3 (f) be synchronizer change in location curve graph, and solid line indicates 2 grades of synchronizer positions, and modest dotted line indicates 3 gear synchronizer positions；Figure 3 (g) be speed change curve；Fig. 3 (h) is TCU shift request signal change curve；Fig. 3 (i) is HCU shift license letter Number change curve.

It should be noted that compared for clear declarative procedure and with shift process shown in fig. 1, this Wen Jun with It steps on the gas and rises to the powershift process of 3 gears from 2 gears for example, still vehicle is upshift or shift, or is driven Member steps on the gas or does not step on the gas, and does not constitute a limitation to the technical solution of powershift method of the invention.

Comparison diagram 1 (b) and Fig. 3 (b) can see, and start to carry out revolving speed control to power source also in 1100ms, make Gear pair after the revolving speed controlling value and shift that need to spend 500ms that can make motor with powershift method in the prior art The revolving speed of the input shaft for the speed changer answered is consistent, and only needs to spend using the powershift method in the embodiment of the present invention 300ms can be so that the revolving speed of the input shaft of the revolving speed controlling value of motor speed changer corresponding with gear after shift be consistent.Therefore The time of shift can also be reduced.

And can from Fig. 1 (e) as it can be seen that engine and motor both power sources carry out jointly direct torque when It waits, motor torque is slow for the response speed for controlling signal compared with motor torque for the response speed for controlling signal, and Fig. 3 (e) only a kind of revolving speed of power source of motor is controlled in, this problem is just not present, so as to promote the flat of driving It is pliable.

In specific implementation, the HCU can be adjusted to the motor torque by the way that motor torque is adjusted to zero Before adjusting the torque of the motor torque and the motor torque and mode a variety of power sources be switched to motor one kind move Power source.As shown in Fig. 3 (e), the torque of engine when 100ms slowly reduce, and the torque of motor slowly increases, until Increase to the torque of 100ms foregoing description engine and the sum of the torque of the motor.

After a variety of power sources are switched to a kind of movement of power source of motor by HCU completion, S24 is executed.

S24: the HCU by the rotational speed regulation of the motor to transmission input shaft corresponding with gear after shift revolving speed Unanimously.

Power source, the corresponding input shaft of gear after shift combines needs when in specific implementation, due to shift, therefore The HCU can be consistent by the revolving speed of the rotational speed regulation of the motor to transmission input shaft corresponding with gear after shift.It is complete At the revolving speed of the rotational speed regulation of the motor to transmission input shaft corresponding with gear after shift is consistent, execution S25.Specifically Ground, the HCU can according to the TCU torque request signal in Fig. 3 (d) shown in solid line by the rotational speed regulation of the motor to change The revolving speed of the corresponding transmission input shaft of gear is consistent after gear.

In an embodiment of the present invention, the HCU can be according to the torque request signal that the TCU is sent to the motor A kind of this revolving speed that power source carries out rotational speed regulation extremely transmission input shaft corresponding with gear after shift is consistent.

In specific implementation, to ensure to have completed torque interaction between clutch, current shelves can be determined in the HCU When the corresponding clutch transmission torque in position is lower than preset first threshold value, then execute S14.Specifically, can see from Fig. 3 (d), When 1100ms, the HCU determines that the corresponding clutch transmission torque of current gear is corresponding lower than the Half engagement point of the clutch Torque value, such as when torque value can be 3Nm, the HCU just start to execute by the rotational speed regulation of the motor extremely with shift The consistent movement of revolving speed of the corresponding transmission input shaft of gear afterwards.

S25: when the TCU completes gear shifting action, the HCU switches back into a kind of power source of the motor described a variety of Power source.

In specific implementation, in order to not influence the subsequent driving of vehicle, when determining that the TCU completes gear shifting action, institute A kind of power source of the motor can be switched back into a variety of power sources by stating HCU.For example a kind of power source of motor can be cut Gain engine and motor both power sources.Specifically it may refer to the variation of (c) after 1750ms in Fig. 3, as the TCU After completing off-gear movement, the HCU, which can start to execute, to be switched back into engine and motor a kind of power source of motor both is moved The movement in power source.

To more fully understand those skilled in the art and realizing the present invention, it is another that Fig. 4 shows the embodiment of the present invention A kind of powershift control method, the method may include:

S401: judge whether the condition for meeting synchronizer engagement.

In specific implementation, TCU may determine that whether speed meets the condition of synchronizer engagement.When determining that the speed is full The condition of sufficient synchronizer engagement, executes S402, executes S401 conversely, then recycling.

Shift request signal is set 1 and is sent to HCU by S402:TCU.

In specific implementation, shift request signal be usually 0, when the speed meet synchronizer engagement condition, it is described The shift request signal can be set 1 and be sent to the HCU by TCU.

Specifically, can be when the 80ms that Fig. 3 (h) is shown, shift request signal is set 1 and is sent to by the TCU HCU。

S403: the HCU determines whether the TCU shift.

In specific implementation, the HCU can judge according to current motor state, battery charge state and clutch state The TCU whether is allowed to shift gears.If the HCU allows the TCU to shift gears, S404 is executed；Conversely, then terminating.

Specifically, it may refer within the period of Fig. 3 (i) 80ms-100ms shown, the HCU is judging whether to permit Perhaps the described TCU shift.

Shift is allowed signal to set 1 and is sent to the TCU by S404: the HCU.

In specific implementation, the shift usually for 0 can be allowed signal to set 1 and be sent to the TCU by the HCU, with Inform that the TCU executes gear shifting action.

Specifically, can be when the 100ms that Fig. 3 (i) is shown, the HCU is determining that judging result allows institute After stating TCU execution gear shifting action, shift is allowed signal to set 1 and is sent to the TCU.

S405: the TCU start synchronizer pre-engagement movement and the HCU start powershift movement.

In specific implementation, when the TCU receive that the HCU sends when setting 1 shift and allowing signal, can start Execute the synchronizer pre-engagement movement in gear shifting action.

Specifically, can be when the 100ms that Fig. 3 (f) is shown, therefrom position is controlled and pushes 3 gears for 13 synchronizer positions The corresponding position of gear, 24 synchronizer positions are still maintained at the position of 2 gear gears.

In specific implementation, in order to save shift time, while the TCU starts the movement of synchronizer pre-engagement, institute Powershift movement can be started by stating HCU.

It is with what the movement of synchronizer pre-engagement carried out simultaneously, it is seen that described in (e) in Fig. 3, sent out shown in modest dotted line The actual torque of motivation constantly reduces, and the actual torque of motor shown in solid dotted line constantly increases, until increasing to as mixing The actual torque of power.

Specifically, in Fig. 3 when 600ms, Fig. 3 (f) shows the TCU and completes the movement of synchronizer pre-engagement, and Fig. 3 (e) shows The HCU also completes powershift movement out.Then S406 can be executed.

S406: judge whether speed meets shift condition.

In specific implementation, the TCU may determine that whether current vehicle speed meets the condition of shift, meet in current vehicle speed When the condition of shift, S407 can be executed.

S407: clutch carries out torque interaction.

In specific implementation, it was shifting gears between the corresponding clutch of current gear clutch corresponding with gear after shift Need to carry out torque interaction in journey.When the corresponding clutch transmission torque of current gear is lower than preset first threshold value, can hold Row S408.

Specifically, in Fig. 3 (d) both threads, the corresponding clutch 2 of 2 gear transmits torque and constantly reduces, 3 grades The corresponding clutch 1 in position transmits torque and constantly increases, until the clutch transmission torque of 2 gear is reduced to clutch and partly connects When chalaza, generally 3Nm, it can start to execute S408.

S408: according to the TCU send torque request signal to the motor carry out rotational speed regulation to shelves after shift The revolving speed of the corresponding transmission input shaft in position is consistent.

In specific implementation, the HCU can turn the motor according to the torque request signal that the TCU is sent The revolving speed that speed is adjusted to transmission input shaft corresponding with gear after shift is consistent.

Specifically, may refer in Fig. 3 (b) and (d), (b) torque request signal sent for TCU, and (d) in reality Line is the torque request signal change curve of motor, it can be seen that the revolving speed of motor is correspondingly become with torque request signal Change, since motor has closed feedback regulating system, motor is very accurate for the response of torque request signal, facilitate control, And the speed of response is also quickly, can reduce shift time.

S409: the TCU disengages the synchronizer of current gear.

In specific implementation, rotational speed regulation is carried out to transmission input shaft corresponding with gear after shift in the motor After revolving speed is consistent, the TCU can disengage the synchronizer of current gear.

Specifically, it may refer in Fig. 3 (f), the torque of power source has been enough to provide for the vehicle with 3 gear rows The tractive force sailed can then execute off-gear movement, i.e., 24 synchronizer positions be pushed on middle position, but since hydraulic response needs Regular hour, so the practical movement for just really starting to execute off-gear in 1680ms.

Shift request signal zero setting and is sent to the HCU by S410: the TCU.

It in specific implementation, can be by request signal of shifting gears after the TCU completes to disengage the synchronizer of current gear Zero setting is simultaneously sent to the HCU.Specifically, it may refer in Fig. 3 (h), the TCU will shift gears and request signal zero setting and be sent to The HCU.

S411: the HCU will shift allow signal zero setting and be sent to the TCU go forward side by side action edge switch.

It is being embodied, when the HCU receives the shift request signal of the zero setting from the TCU, is showing the TCU Completed shift movement, then can will shift allow signal zero setting and be sent to the TCU go forward side by side action edge switch, i.e., will A kind of power source of current motor be switched to gear shifting action before a variety of power sources.

Specifically, it may refer in Fig. 3 (i), shift is allowed signal zero setting and is sent to the TCU simultaneously by the HCU Carry out powershift.

In specific implementation, determining that the TCU has been received the shift of the zero setting that the HCU is sent and allow signal simultaneously And when completing powershift movement, it is determined that entire shift process is over.

To more fully understand those skilled in the art and realizing the present invention, it is above-mentioned that a kind of correspondence is also provided herein The device of powershift control method.

Fig. 5 shows one of embodiment of the present invention power switching control device, and described device 5 may include: first Judging unit 51, adjusts unit 53 and the second switch unit 54 at first switch unit 52, in which:

First judging unit 51, suitable for determining whether that TCU shifts gears；

First switch unit 52 is suitable for allowing the TCU to shift gears when first judging unit 51 determines, and described When TCU executes the movement of synchronizer pre-engagement, a variety of power sources are switched to a kind of power source of motor；

The adjusting unit 53, suitable for the corresponding transmission input shaft of gear after the rotational speed regulation of the motor is extremely shifted gears Revolving speed；

Second switch unit 54 is suitable for cutting a kind of power source of the motor when the TCU completes gear shifting action Gain a variety of power sources.

In an embodiment of the present invention, the adjusting unit 53, suitable for the torque request signal pair sent according to the TCU It is consistent to the revolving speed of transmission input shaft corresponding with gear after shift that the motor carries out rotational speed regulation.

In specific implementation, the power switching control device 5 can also include second judgment unit 55.Described second sentences When disconnected unit 55 is suitable for judging whether the corresponding clutch transmission torque of current gear is lower than preset first threshold value；

The adjusting unit 53 is suitable for determining that the corresponding clutch transmitting of current gear turns in the second judgment unit 55 When square is lower than the first threshold, by turning for the rotational speed regulation of the motor to transmission input shaft corresponding with gear after shift It is fast consistent.

In specific implementation, first judging unit 51 is suitable for according to the motor status, the corresponding electricity of the motor Pond state-of-charge and mixed dynamic model block clutch state determine whether that TCU shifts gears.

In an embodiment of the present invention, when the corresponding battery charge of the motor is enough to provide the power of a variety of power sources Square and and mixed dynamic model block clutch when being not in self study or adaptive model, first judging unit 51, which determines, to be allowed The TCU shift.

The embodiment of the invention also provides a kind of HCU, may include above-described power switching control device.

Those of ordinary skill in the art will appreciate that all or part of the steps in the various methods of above-described embodiment is can It is completed with instructing relevant hardware by program, which can store in computer readable storage medium, storage Medium may 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 powershift control method characterized by comprising

HCU determines whether that TCU shifts gears；

The TCU is allowed to shift gears when the HCU is determined, and when TCU control synchronizer execution pre-engagement movement, the HCU A variety of power sources are switched to a kind of power source of motor；

The HCU is consistent by the revolving speed of the rotational speed regulation of the motor to transmission input shaft corresponding with gear after shift；

When completing gear shifting action, a kind of power source of the motor is switched back into a variety of power sources by the HCU；

The HCU determines whether that TCU shifts gears, comprising:

The HCU sentences according to the motor status, the corresponding battery charge state of the motor and mixed dynamic model block clutch state It is disconnected whether TCU to be allowed to shift gears；

When the motor is in normal operating conditions, the corresponding battery charge of the motor is sufficient to make a variety of power sources to mention For enough torque, and when the mixed dynamic model block clutch is not in self study or adaptive model, the HCU, which is determined, allows institute State TCU shift.

2. powershift control method according to claim 1, which is characterized in that the HCU is by the revolving speed of the motor It is adjusted to the revolving speed of the corresponding clutch of gear after shifting gears, comprising:

The gear to after shifting gears is corresponding by the rotational speed regulation of the motor for the torque request signal that the HCU is sent according to the TCU Transmission input shaft revolving speed.

3. powershift control method according to claim 2, which is characterized in that further include:

When the HCU determines the corresponding clutch transmission torque of current gear lower than preset first threshold value, sent out according to the TCU The motor is carried out turn of rotational speed regulation corresponding transmission input shaft of gear to after shifting gears by the torque request signal sent Speed.

4. a kind of power switching control device characterized by comprising

First judging unit, suitable for determining whether that TCU shifts gears；

First switch unit is suitable for allowing the TCU to shift gears when first judging unit determines, and TCU control synchronizes When device executes pre-engagement movement, a variety of power sources are switched to a kind of power source of motor；

Unit is adjusted, the revolving speed suitable for the corresponding transmission input shaft of gear after the rotational speed regulation of the motor is extremely shifted gears；

Second switch unit is suitable for switching back into a kind of power source of the motor described more when the TCU completes gear shifting action Kind power source；

First judging unit is suitable for according to the motor status, the corresponding battery charge state of the motor and mixed dynamic model block Clutch state determines whether that TCU shifts gears, when the motor is in the corresponding battery lotus of normal operating conditions, the motor Electricity be enough to provide a variety of power sources torque and and the mixed dynamic model block clutch be not in self study or adaptive model When, determining allows the TCU to shift gears.

5. power switching control device according to claim 4, which is characterized in that the adjusting unit is suitable for according to The motor speed is adjusted to the revolving speed of the corresponding transmission input shaft of gear after shift by the torque request signal that TCU is sent.

6. power switching control device according to claim 5, which is characterized in that further include: second judgment unit is suitable for When judging whether the corresponding clutch transmission torque of current gear is lower than preset first threshold value；

The adjusting unit is suitable for determining the corresponding clutch transmission torque of current gear lower than institute in the second judgment unit It is when stating first threshold, the revolving speed of the rotational speed regulation of the motor to transmission input shaft corresponding with gear after shift is consistent.

7. a kind of HCU, which is characterized in that including the described in any item power switching control devices of claim 4-6.