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Regenerative control device for electrically driven vehicles

A regenerative control and electric drive technology, applied in control devices, DC motor reduction devices, battery/fuel cell control devices, etc., can solve problems such as reducing vehicle operability or comfort

Active Publication Date: 2019-09-17
MITSUBISHI MOTORS CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

It is therefore feared that the operation is very burdensome, which in turn reduces the operability or comfort of the vehicle

Method used

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  • Regenerative control device for electrically driven vehicles
  • Regenerative control device for electrically driven vehicles
  • Regenerative control device for electrically driven vehicles

Examples

Experimental program
Comparison scheme
Effect test

Embodiment approach 1

[0020] Such as figure 1 As shown, for example, an electrically driven vehicle 1 is an electric vehicle provided with a battery 2 and a drive motor (rotating motor) 3 . Battery 2 is a rechargeable battery. The driving motor 3 is operated by electric power supplied from the battery 2 . The drive motor 3 is connected to drive wheels (front wheels in the embodiment) 5 through a drive mechanism 4 . Examples of the drive mechanism 4 include CVT (Continuously Variable Transmission), differential gears, and the like. During a so-called regenerative operation, while driving the driving wheels 5 by the driving mechanism 4 , the driving motor 3 receives rotation from the driving wheels 5 to generate electric power and supplies the electric power to the battery 2 . This supply / reception of electric power between the drive motor 3 and the battery 2 is controlled by an ECU (Electronic Control Unit) 6 .

[0021] Incidentally, the ECU 6 is formed as an LSI device integrating a CPU (microp...

Embodiment approach 2

[0045] The present embodiment is an example designed so that when the predetermined regeneration level restricting condition is satisfied, even if the switch lever 81 is operated two or more times within a predetermined time, the stage to which the regeneration level can be limited is changed.

[0046] Such as Figure 5 As shown, the motor control unit 60 constituting the regeneration control device 10 according to Embodiment 2 is provided with a drive motor control unit 61, a regeneration level setting unit 62, and a regeneration execution unit 63, and is also provided with a charge state detection unit 64, a route information detection unit unit 65 and a conditional establishment determination unit 66 .

[0047] The state of charge detection unit 64 detects the state of charge (SOC) of the battery 2 provided in the electrically driven vehicle 1 . For example, charge state detection unit 64 calculates the SOC of battery 2 from an initially stored map (map) based on voltage i...

Embodiment approach 3

[0068] This embodiment is a modification of the second embodiment. Specifically, the present embodiment is an example designed such that when the electrically driven vehicle travels on a curve, it is determined that the regeneration level restriction condition holds.

[0069] Such as Figure 8 As shown, the motor control unit 60 constituting the regeneration control device 10 according to Embodiment 3 is not only provided with a driving motor control unit 61, a regeneration level setting unit 62, a regeneration execution unit 63, and a condition determination unit 66, but also provided with a running state Detection unit 67.

[0070] The running state detection unit 67 detects the running state of the electrically driven vehicle 1 . For example, in the present embodiment, the electrically driven vehicle 1 is provided with various sensors such as a vehicle speed sensor (vehicle speed detection unit) 32 which can be used to detect the vehicle speed and a steering angle sensor ...

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Abstract

A regeneration control device for an electrically driven vehicle configured to control a regeneration operation in which rotational energy of a wheel is converted and regenerated into electric energy by a rotating electric motor, including: a regeneration level selection unit manually operated to select a regeneration level in the regeneration operation; a regeneration level setting unit that changes the regeneration level to a certain stage according to an operation on the regeneration level selection unit; and a regeneration execution unit that executes according to the stage of the regeneration level changed by the regeneration level setting unit regeneration operation. When a specific operation is performed on the reproduction level selection unit, the reproduction level setting unit changes the reproduction level to a highest stage in one of an upward direction and a downward direction.

Description

technical field [0001] The present invention relates to a regeneration control device that controls regeneration operation in an electrically driven vehicle using a rotating electric motor as a driving source. Background technique [0002] For example, in an electrically driven vehicle such as an electric vehicle (EV) or a hybrid electric vehicle (HEV), a technique of controlling a rotating electric motor to generate electric power during deceleration of the vehicle or the like is available, that is, performing a regenerative operation so that while using the generated Electricity charges the battery and at the same time obtains braking power. [0003] There is concern that the braking force (regenerative braking force) caused by such a regenerative operation will affect the behavior of the vehicle, thereby reducing the operability or comfort of the vehicle. To solve this problem, there is a technology devised to be able to appropriately adjust the regenerative braking forc...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B60L7/10B60L53/00B60L15/20B60L50/15
CPCB60L50/61B60L7/10B60L7/26F16H2059/0252B60L58/12Y02T10/62Y02T10/72Y02T10/70Y02T10/7072Y02T90/14B60L7/14B60L7/18B60L2240/12B60L2240/24B60L2240/36B60L2240/425B60L2240/525B60L2240/642H02P3/14
Inventor 水井俊文
Owner MITSUBISHI MOTORS CORP
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