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Hybrid vehicle, starting control method, distribution system and vehicle-mounted controller

A hybrid vehicle and on-board controller technology, applied in the vehicle field, can solve problems such as low battery remaining power, torque performance limitation, motor function failure, etc., to achieve the effect of improving the safety and reliability of use, and improving the starting method

Pending Publication Date: 2022-05-13
DONGFENG MOTOR GRP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] In view of this, the embodiment of the present application expects to provide a start control method of a hybrid vehicle, a hybrid power distribution system, an on-board controller and a hybrid vehicle, so as to solve situations such as low battery remaining power, motor function failure or limited torque performance, etc. Start-up issues with getting off the vehicle

Method used

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  • Hybrid vehicle, starting control method, distribution system and vehicle-mounted controller
  • Hybrid vehicle, starting control method, distribution system and vehicle-mounted controller
  • Hybrid vehicle, starting control method, distribution system and vehicle-mounted controller

Examples

Experimental program
Comparison scheme
Effect test

Embodiment approach 1

[0080] Implementation Mode 1: EV1 Mode

[0081] When the functional state of the first motor 6 is normal and the torque performance is satisfactory, the remaining power of the battery is greater than or equal to the first threshold, and the first motor 6 meets the required torque at the wheel end, the first motor 6 drives the vehicle to start.

[0082] In one embodiment, see Figure 4 , when the clutch 3 is opened, the first synchronizer 44 is opened and the second synchronizer 45 is opened, the engine 1 does not work, and the power for driving the wheels is provided by the first motor 6 . The output power of the first motor 6 is output to the fourth gear 412 through the first motor shaft 61, and transmitted to the differential through the fourth gear 412, the fifth gear 413, the fifth gear shaft 414, the sixth gear 415 and the seventh gear 416. 5, and then drive the wheels through the output shaft 8 to start.

[0083] Exemplarily, in the EV1 mode, the execution torque of th...

Embodiment approach 2

[0084] Implementation Mode 2: ECVT1 Mode

[0085] When the functional state of the first motor 6 is normal and the torque performance is satisfied, the remaining power is greater than or equal to the first threshold, or the remaining power is greater than or equal to the second threshold and less than the first threshold, and the first motor 6 does not meet the required torque, but meets the required torque When the torque is distributed, the first motor 6 is coupled with the engine 1 to drive the vehicle to start.

[0086] In one embodiment, see Figure 5, when the clutch 3 is engaged, the first synchronizer 44 is engaged and the second synchronizer 45 is opened, the engine 1 works, and the power for driving the wheels is provided by the first motor 6 and the engine 1 . The output power of the engine 1 passes through the torsional shock absorber 12, the clutch 3, the planetary gear carrier 41, the planetary gear 43, the planetary ring gear 46, the first synchronizer 44, the ...

Embodiment approach 3

[0087] Implementation Mode 3: ECVT2 Mode

[0088] In one embodiment, see Figure 6 , when the clutch 3 is engaged, the first synchronizer 44 is engaged and the second synchronizer 45 is opened, the engine 1 works, and the power for driving the wheels is provided by the first motor 6 and the engine 1 . The engine 1 can drive the second motor 7 to charge the storage battery, that is, the second motor 7 can generate electricity.

[0089] For example, in the ECVT2 mode, referring to the torque set in the vehicle torque MAP, the output torques of the engine 1 and the first motor 6 are proportionally coupled and output to the wheel ends to drive the wheels to rotate, so that the vehicle can start normally. Specifically, it is divided into two initial stages. In the first stage of starting, due to the low remaining power, the engine 1 is directly connected to the second motor 7 to drive the second motor 7 to generate electricity with the highest efficiency. The second motor 7 is d...

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Abstract

The invention discloses a starting control method for a hybrid vehicle. The starting control method comprises the steps that the required torque of a wheel end is calculated; obtaining the residual electric quantity of the storage battery; judging the functional state of the first motor, and judging the torque performance of the first motor based on the required torque; and selecting a starting mode of the vehicle according to the residual electric quantity, the function state of the first motor and the torque performance. The invention further discloses a hybrid power distribution system which comprises an engine, a clutch, a transmission device, a differential mechanism, a first motor and a second motor, and the clutch is used for connecting or disconnecting power of the engine; the engine is connected with the transmission device through the clutch; the differential is connected with the transmission device; the first motor and the second motor can be in power connection with the differential mechanism through the transmission device so as to drive the vehicle to walk. The engine can drive the second motor to generate electricity through the transmission device. The starting mode of the hybrid power vehicle is perfected, and the using safety and reliability of the system are improved.

Description

technical field [0001] The present application relates to the field of vehicles, and in particular to a start control method of a hybrid vehicle, a hybrid distribution system, an on-board controller and a hybrid vehicle. Background technique [0002] In related technologies, when the battery of a hybrid vehicle has a relatively low remaining power (that is, SOC: state of charge, battery state of charge), although the charging speed is also very fast, for the user, waiting for time may cause Anxiety, the starting torque that can be satisfied when the remaining power is used for motor starting control is small. For most ECVT (electronic continuously variable transmission, electronically controlled continuously variable transmission) hybrid transmissions, the direct drive speed of the engine is relatively small, and motor drive or auxiliary drive is required to start the vehicle. Contents of the invention [0003] In view of this, the embodiment of the present application ex...

Claims

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Application Information

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IPC IPC(8): B60W10/26B60W10/08B60W10/06B60W30/18B60W20/10B60K6/365B60K6/50B60K6/38
CPCB60W10/26B60W10/08B60W10/06B60W30/18027B60W20/10B60K6/365B60K6/50B60K6/38B60W2710/083B60W2510/244B60W2710/0666Y02T10/62
Inventor 孟斌严军周立王德伟闵立
Owner DONGFENG MOTOR GRP
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