Regenerative control device for hybrid vehicle

Patent metadata

Field	Value
Publication number	US-2016059857-A1
Application number	US-201514836460-A
Country	US
Kind code	A1
Filing date	Aug 26, 2015
Priority date	Aug 27, 2014
Publication date	Mar 3, 2016
Grant date	—

Abstract

A regenerative control device for a hybrid vehicle includes a regenerative braking power control unit prohibiting or limiting execution of first regenerative braking to charge the battery with power generated by the regenerative power generation of the traveling motor generator during deceleration when it is determined that it is necessary to restrict charging of the battery. Under condition where the execution of the first regenerative braking is prohibited or limited, the regenerative braking power control unit causes second regenerative braking to transmit rotary driving power to the engine by rotating the power generation motor generator by the power generated by the regenerative power generation, to be executed when the operation unit is set to a regeneration level in an increasing direction, and causes the second regenerative braking to be stopped when the operation unit is set to a regeneration level in a decreasing direction.

First claim

What is claimed is:

1 . A regenerative control device for a hybrid vehicle comprising:
a power generation motor generator that is driven by an engine to perform power generation and is configured to function as a motor for driving the engine; a traveling motor generator that is configured to perform driving of a driving wheel of the vehicle and is configured to perform regenerative power generation; a battery that is connected to the power generation motor generator and the traveling motor generator and is configured to perform transfer of power; a first regenerative braking control unit that is configured to control execution of first regenerative braking to charge the battery with a power generated by the regenerative power generation of the traveling motor generator during deceleration of the vehicle; a second regenerative braking control unit that is configured to control execution of second regenerative braking to transmit a rotary driving power to the engine by rotating the power generation motor generator by the power generated by the regenerative power generation of the traveling motor generator during the deceleration of the vehicle; an operation unit that is configured to adjust a regeneration level indicative of a strength of a regenerative braking power of the vehicle; a battery state detection unit that is configured to detect a state of the battery; and a regenerative braking power control unit that is configured to determine whether it is necessary to restrict charging of the battery or not based on the state of the battery detected by the battery state detection unit and is configured to prohibit or limit the execution of the first regenerative braking when it is determined that it is necessary to restrict charging of the battery, the regenerative braking power control unit, under a condition where the regenerative braking power control unit prohibits or limits the execution of the first regenerative braking, is configured to cause the second regenerative braking to be executed when the operation unit is set to a regeneration level in a regenerative braking power increasing direction, and cause the second regenerative braking to be stopped when the operation unit is set to a regeneration level in a regenerative braking power decreasing direction.

2 . The regenerative control device for the hybrid vehicle according to claim 1 , wherein,
under the condition where the regenerative braking power control unit prohibits or limits the execution of the first regenerative braking, the regenerative braking power control unit causes the second regenerative braking to be executed when the operation unit is set to a regeneration level in the regenerative braking power increasing direction from a predetermined regeneration level, and causes the second regenerative braking to be stopped when the operation unit is set to the predetermined regeneration level or a regeneration level in the regenerative braking power decreasing direction from the predetermined regeneration level thereafter.

3 . The regenerative control device for the hybrid vehicle according to claim 1 , wherein
the operation unit is a first operation unit having a plurality of steps of settings in the regenerative braking power increasing direction and in the regenerative braking power decreasing direction, and for the first regenerative braking, the regenerative braking power control unit executes a plurality of steps of settings according to setting by the first operation unit, and, for the second regenerative braking, the regenerative braking power control unit executes two steps of settings of execution and stopping.

4 . The regenerative control device for the hybrid vehicle according to claim 2 , wherein
the operation unit is a first operation unit having a plurality of steps of settings in the regenerative braking power increasing direction and in the regenerative braking power decreasing direction, and for the first regenerative braking, the regenerative braking power control unit executes a plurality of steps of settings according to setting by the first operation unit, and, for the second regenerative braking, the regenerative braking power control unit executes two steps of settings of execution and stopping.

5 . The regenerative control device for the hybrid vehicle according to claim 1 , wherein
the operation unit is a second operation unit capable of adjusting the regenerative braking power of the vehicle only in the regenerative braking power increasing direction with respect to an initial setting, and, under the condition where the regenerative braking power control unit prohibits or limits the execution of the first regenerative braking, the regenerative braking power control unit causes the second regenerative braking to be executed when the second operation unit is operated from the initial setting in the regenerative braking power increasing direction, and causes the second regenerative braking to be stopped when the second operation unit is returned to the initial setting thereafter.

6 . The regenerative control device for the hybrid vehicle according to claim 2 , wherein
the operation unit is a second operation unit capable of adjusting the regenerative braking power of the vehicle only in the regenerative braking power increasing direction with respect to an initial setting, and, under the condition where the regenerative braking power control unit prohibits or limits the execution of the first regenerative braking, the regenerative braking power control unit causes the second regenerative braking to be executed when the second operation unit is operated from the initial setting in the regenerative braking power increasing direction, and causes the second regenerative braking to be stopped when the second operation unit is returned to the initial setting thereafter.

7 . The regenerative control device for the hybrid vehicle according to claim 3 , wherein
the operation unit is a second operation unit capable of adjusting the regenerative braking power of the vehicle only in the regenerative braking power increasing direction with respect to an initial setting, and, under the condition where the regenerative braking power control unit prohibits or limits the execution of the first regenerative braking, the regenerative braking power control unit causes the second regenerative braking to be executed when the second operation unit is operated from the initial setting in the regenerative braking power increasing direction, and causes the second regenerative braking to be stopped when the second operation unit is returned to the initial setting thereafter.

8 . The regenerative control device for the hybrid vehicle according to claim 4 , wherein
the operation unit is a second operation unit capable of adjusting the regenerative braking power of the vehicle only in the regenerative braking power increasing direction with respect to an initial setting, and, under the condition where the regenerative braking power control unit prohibits or limits the execution of the first regenerative braking, the regenerative braking power control unit causes the second regenerative braking to be executed when the second operation unit is operated from the initial setting in the regenerative braking power increasing direction, and causes the second regenerative braking to be stopped when the second operation unit is returned to the initial setting thereafter.

9 . The regenerative control device for the hybrid vehicle according to claim 1 , wherein
the battery state detection unit is a charge state detection unit configured to detect a state of charge of the battery, and the regenerative braking power control unit determines that it is nec

Assignees

• Mitsubishi Motors Corp

Inventors

• Ikedaya Hisakazu
• Ueda Katsunori
• Honda Kentaro
• Hirano Shigetoshi
• Hirao Tadayoshi
• Oguma Takahiro
• Sato Takuya

Classifications

• B60W10/18

  including control of braking systems · CPC title

• B60L50/61

  by batteries charged by engine-driven generators, e.g. series hybrid electric vehicles · CPC title

• B60W30/18127 Primary

  Regenerative braking · CPC title

• B60W2710/086

  Power · CPC title

• B60L2270/145

  Structure borne vibrations · CPC title