CN109849892A - Power dividing type hybrid vehicle pure electric vehicle drive mode method for handover control - Google Patents
Power dividing type hybrid vehicle pure electric vehicle drive mode method for handover control Download PDFInfo
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- CN109849892A CN109849892A CN201910226657.2A CN201910226657A CN109849892A CN 109849892 A CN109849892 A CN 109849892A CN 201910226657 A CN201910226657 A CN 201910226657A CN 109849892 A CN109849892 A CN 109849892A
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Abstract
The present invention provides a kind of power dividing type hybrid vehicle pure electric vehicle drive mode method for handover control, preliminary filling is carried out to second brake (B2) first, the first brake (B1) torque is reduced with certain gradient △ V1 simultaneously, when second brake (B2) preliminary filling is completed, increase second brake (B2) torque to given threshold A with certain gradient △ V2, the first brake (B1) torque is reduced to 0 with certain gradient △ V3 simultaneously, when the first brake (B1) torque is 0, maintain second brake (B2) torque constant, and keep the first brake (B1) negative sense locking, it is zero reduction revolving speed that small machine (E1), which is controlled, with rotating speed of target, when small machine (E1) revolving speed absolute value is less than given threshold B, increase second brake (B2) with certain gradient △ V4 to turn round Square is until the complete locking of second brake, and vehicle pure electric vehicle drive mode switches to EV-2 at this time.The method of the present invention simple possible, vehicle is smooth in drive mode handoff procedure, and driver comfort is good.
Description
Technical field
The present invention relates to the control field of hybrid vehicle, in particular to a kind of power dividing type hybrid vehicle is pure
Electric Drive Mode method for handover control.
Background technique
Hybrid vehicle in the process of moving, can be cut between hybrid power drive mode according to different situations
Change or pure battery drive mode between switch over, it is also possible to from hybrid power drive mode switch to pure electric vehicle driving mould
Formula, and for different hybrid power transmission systems, mode switch control method may be different, and how to control, so that vehicle
It is more smooth in drive mode handoff procedure, drive safety, comfort are improved, then becomes one of hybrid vehicle
Research direction.
Summary of the invention
The present invention is intended to provide vehicle is more smooth in a kind of simple possible, drive mode handoff procedure, drive safety,
The preferable power dividing type hybrid vehicle pure electric vehicle drive mode method for handover control of comfort.
The present invention is realized by the following scheme:
A kind of power dividing type hybrid vehicle pure electric vehicle drive mode method for handover control is in EV-1 in vehicle and drives
When speed will be more than 40km/h in dynamic model formula and vehicle acceleration, vehicle carries out the switching of pure electric vehicle drive mode, by following
Step carries out:
S1: entire car controller to second brake B2 carry out preliminary filling, while keep the first brake B1 negative sense locking and with
Certain gradient △ V1 reduces the first brake B1 torque, when second brake B2 preliminary filling is completed, executes step S2；
S2: with certain gradient △ V2 increase second brake B2 torque to given threshold A, while the first brake B1 is kept
Negative sense locking and the first brake B1 torque is reduced to 0 with certain gradient △ V3, when the first brake B1 torque is 0, executed
Step S3；
S3: maintaining second brake B2 torque constant, and keeps the first brake B1 negative sense locking, vehicle control unit controls
Small machine E1 is zero reduction revolving speed with rotating speed of target, when small machine E1 revolving speed absolute value is less than given threshold B, executes step
S4；
S4: second brake B2 torque is increased until the complete locking of second brake with certain gradient △ V4, at this time vehicle
Pure electric vehicle drive mode switches to EV-2.
The gradient △ V1 is 5~10Nm/10ms, and the gradient △ V2 is 2~5Nm/10ms, and the gradient △ V3 is 30
~80Nm/10ms, the gradient △ V4 are 30~50Nm/10ms.
The given threshold A is 30~50Nm, and the given threshold B is 30~100rpm.
Power dividing type hybrid vehicle pure electric vehicle drive mode method for handover control of the invention, simple possible are driven
In dynamic mode handover procedure, the first brake B1, second brake B2 are accordingly controlled respectively under different conditions, made
It obtains vehicle and smoothly switches to EV-2 drive mode from EV-1 drive mode, meet vehicle acceleration request, mode handover procedure is compact
Continuously, mode switch time is shortened.
Detailed description of the invention
Fig. 1 is the structural schematic diagram for the hybrid power transmission system that the present invention uses；
Fig. 2 is the equivalent lever figure of the EV-1 drive mode for the hybrid power transmission system that the present invention uses；
Fig. 3 is the equivalent lever figure of the EV-2 drive mode for the hybrid power transmission system that the present invention uses；
Fig. 4 is the control of power dividing type hybrid vehicle pure electric vehicle drive mode method for handover control in embodiment 1
Flow chart.
Specific embodiment
The invention will be further described with reference to embodiments, but the invention is not limited to the statements of embodiment.
The structural schematic diagram for the hybrid power transmission system that the present invention uses is as shown in Figure 1, its main component includes small electricity
Machine E1, big motor E2, the first brake B1, first clutch C0, second clutch C1, the first single planetary row PG1 and second are single
The planetary gear coupling mechanism and third single planetary row PG3, the first single planetary row PG1 of planet row PG2 composition include the first planet
Frame PC1, the first planetary gear P1, the first sun gear S1 and the first gear ring R1, the second single planetary row PG2 include the second planet carrier PC2,
The the first sun gear S1 and small machine E1 of second planetary gear P2, the second sun gear S2 and the second gear ring R2, the first single planetary row PG1
The first rotor axis 2 be connected, the second armature spindle 3 of the second sun gear S2 and big motor E2 of the second single planetary row PG2 are connected
It connects, third single planetary row PG3 includes third planet carrier PC3, the third line star-wheel P3, third sun gear S3 and third gear ring R3, defeated
Enter axis 1 to be connected with the output shaft of engine ICE, one end of first clutch C0 is connected on first planet carrier PC1, first from
The other end of clutch C0 is connected on input shaft 1；One end of second clutch C1 is connected to the second armature spindle 3 of big motor E2
On, the other end of second clutch C1 is connected on input shaft 1, and one end of the first brake B1 is connected to first planet carrier PC1
On, one end of second brake B2 is connected on the first rotor axis 2 of small machine E1.The hybrid powertrain that the present invention uses
System, structure is in the speed changer (publication number CN108105358A) that patent name is for preposition forerunner's hybrid vehicle
It is open.
The hybrid power transmission system that the present invention uses has multiple-working mode, between each operating mode and shifting element
Control planning it is as shown in table 1, wherein 〇 indicate opening state, ● indicate closed state.
Control planning between each operating mode of table 1 and shifting element
Wherein, the first gear pure electric vehicle drive mode, that is, fixed drive ratio electric-only mode (abbreviation EV-1 drive mode)
Equivalent lever figure as shown in Fig. 2, the second gear pure electric vehicle drive mode (abbreviation EV-2 drive mode) equivalent lever figure such as Fig. 3
Shown, in Fig. 2, Fig. 3, left side ordinate indicates that revolving speed, nS1 indicate that the first sun wheel speed, nS2 indicate second sun rotation
Speed, nPC1 indicate that first planet carrier revolving speed, nR1 indicate the first gear ring revolving speed.
Embodiment 1
A kind of power dividing type hybrid vehicle pure electric vehicle drive mode method for handover control is in EV-1 in vehicle and drives
When speed will be more than 40km/h in dynamic model formula and vehicle acceleration, vehicle carries out the switching of pure electric vehicle drive mode, control
Flow chart as indicated at 4, sequentially includes the following steps:
S1: entire car controller to second brake B2 carry out preliminary filling, while keep the first brake B1 negative sense locking and with
Certain gradient △ V1 reduces the first brake B1 torque, gradient △ V1 value in 5~10Nm/10ms, as second brake B2
When preliminary filling is completed, step S2 is executed；
S2: second brake B2 torque is increased to given threshold A with certain gradient △ V2, gradient △ V2 is in 2~5Nm/
Value in 10ms, given threshold A value in 30~50Nm, while keeping the first brake B1 negative sense locking and with certain gradient
△ V3 reduces the first brake B1 torque to 0, gradient △ V3 value in 30~80Nm/10ms, when the first brake B1 torque
When being 0, step S3 is executed；
S3: maintaining second brake B2 torque constant, and keeps the first brake B1 negative sense locking, vehicle control unit controls
Small machine E1 is zero reduction revolving speed with rotating speed of target, when small machine E1 revolving speed absolute value is less than given threshold B, given threshold B
The value in 30~100rpm executes step S4；
S4: second brake B2 torque is increased with certain gradient △ V4 until the complete locking of second brake, gradient △ V4
The value in 30~50Nm/10ms, vehicle pure electric vehicle drive mode switches to EV-2 at this time.
Claims (3)
1. a kind of power dividing type hybrid vehicle pure electric vehicle drive mode method for handover control, it is characterised in that: in vehicle
When speed will be more than 40km/h in EV-1 drive mode and vehicle acceleration, vehicle carries out pure electric vehicle drive mode and cuts
It changes, sequentially includes the following steps:
S1: entire car controller to second brake (B2) carry out preliminary filling, while keep the first brake (B1) negative sense locking and with
Certain gradient △ V1 reduces the first brake (B1) torque, when second brake (B2) preliminary filling is completed, executes step S2；
S2: with certain gradient △ V2 increase second brake (B2) torque to given threshold A, while the first brake (B1) is kept
Negative sense locking and the first brake (B1) torque is reduced to 0 with certain gradient △ V3, when the first brake (B1) torque is 0,
Execute step S3；
S3: maintaining second brake (B2) torque constant, and keeps the first brake (B1) negative sense locking, vehicle control unit controls
Small machine (E1) is zero reduction revolving speed with rotating speed of target, when small machine (E1) revolving speed absolute value is less than given threshold B, executes step
Rapid S4；
S4: second brake (B2) torque is increased with certain gradient △ V4 until the complete locking of second brake, vehicle is pure at this time
Electric Drive Mode switches to EV-2.
2. power dividing type hybrid vehicle pure electric vehicle drive mode method for handover control as described in claim 1, special
Sign is: the gradient △ V1 is 5~10Nm/10ms, and the gradient △ V2 is 2~5Nm/10ms, and the gradient △ V3 is 30
~80Nm/10ms, the gradient △ V4 are 30~50Nm/10ms.
3. power dividing type hybrid vehicle pure electric vehicle drive mode method for handover control as claimed in claim 1 or 2,
Be characterized in that: the given threshold A is 30~50Nm, and the given threshold B is 30~100rpm.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201910226657.2A CN109849892B (en) | 2019-03-25 | 2019-03-25 | Pure electric drive mode switching control method of power split type hybrid vehicle |
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| CN201910226657.2A CN109849892B (en) | 2019-03-25 | 2019-03-25 | Pure electric drive mode switching control method of power split type hybrid vehicle |
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| CN109849892A true CN109849892A (en) | 2019-06-07 |
| CN109849892B CN109849892B (en) | 2020-08-28 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2021062927A1 (en) * | 2019-09-30 | 2021-04-08 | 苏州益高电动车辆制造有限公司 | Hybrid vehicle, control method, computer apparatus, and readable storage medium |
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| CN108674407A (en) * | 2018-05-22 | 2018-10-19 | 浙江吉利控股集团有限公司 | A kind of the power method for handover control and system of automobile |
| CN109131307A (en) * | 2018-08-08 | 2019-01-04 | 同济大学 | The H ∞ robust control method of hybrid power shunting hybrid power system pattern switching |
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| JP2015085906A (en) * | 2013-11-01 | 2015-05-07 | トヨタ自動車株式会社 | Drive device for hybrid vehicle |
| CN108394403A (en) * | 2018-04-28 | 2018-08-14 | 吉林大学 | A kind of power dividing type hybrid vehicle mode switch control method |
| CN108674407A (en) * | 2018-05-22 | 2018-10-19 | 浙江吉利控股集团有限公司 | A kind of the power method for handover control and system of automobile |
| CN108556836A (en) * | 2018-05-30 | 2018-09-21 | 科力远混合动力技术有限公司 | The control method of power dividing hybrid vehicle brake auxiliary starter engine |
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Effective date of registration: 20220830 Address after: No.16 Gongxin Avenue, industrial park, Yifeng County, Yichun City, Jiangxi Province Patentee after: Jiangxi Dingsheng New Material Technology Co.,Ltd. Address before: 528000 601-604 room, block A, 1 floor, 131 Ji Hua Xi Road, Chancheng District, Foshan, Guangdong. Patentee before: CORUN HYBRID POWER TECHNOLOGY Co.,Ltd. |