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Power generation control device

A control device and power generation control technology, which is applied in the direction of control device, power consumption device, circuit device, etc., can solve the problem of inability to obtain energy balance and other problems, and achieve the effect of improving operation efficiency

Active Publication Date: 2015-06-10
HONDA MOTOR CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

When the state of charge of such a storage battery drops, it may not be possible to achieve energy balance for a low-output generator (internal combustion engine with a small displacement) when continuous high-load operation is required.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

no. 1 approach 》

[0058]

[0059] figure 1 It is a block diagram showing the overall configuration of the power unit PU of the vehicle.

[0060] Such as figure 1 As shown, the power unit PU mounted on a vehicle (hybrid vehicle) includes a battery 11, a first converter 12, a first power drive unit 13, an electric motor 14, an internal combustion engine 15, a generator 16, a second power drive unit 17, an electric motor A compressor 18 , an electric heater 19 , a second converter 20 , a low-voltage battery 21 , a charging device 22 , an external charging plug 23 and a control device 30 . Here, the internal combustion engine 15 , the generator 16 , and the second power drive unit 17 constitute an auxiliary power unit S that generates electric power from the driving force of the internal combustion engine 15 .

[0061] The storage battery 11 is, for example, a lithium ion (Li-ion) secondary battery, and can be charged and discharged.

[0062] One side of the first converter 12 is connected t...

no. 2 approach 》

[0198]

[0199] Next, the power unit PU of the second embodiment will be described. The overall structure of the power unit PU of the second embodiment is the same as that of the power unit PU of the first embodiment (refer to figure 1 ) are the same, so the explanation is omitted.

[0200]

[0201] Next, the operation mode determination process for the power unit PU of the second embodiment (refer to figure 2 )Be explained. The control device 30 of the power unit PU of the first embodiment and the second embodiment is figure 2 In step S27, limit processing (power generation amount limit processing) is performed on the generator power generation output PREQGEN calculated in step S26. Here, the power generation amount limit processing in the first embodiment is Figure 6 "Power generation amount limit processing (upper limit value)" shown. On the other hand, the power generation limit processing in the second embodiment is Figure 9 The "power generation amount lim...

no. 3 approach 》

[0223]

[0224] Next, the power unit PU of the third embodiment will be described. The overall structure of the power unit PU of the third embodiment is the same as that of the power unit PU of the first embodiment (refer to figure 1 ) are the same, so the explanation is omitted.

[0225]

[0226] Next, use Figure 11 , the operation mode determination process of the power unit PU according to the third embodiment will be described. Figure 11 It is a flowchart of the operation mode determination process of the power unit PU in the third embodiment.

[0227] The operation mode determination process of the first embodiment (refer to figure 2 ) calculates the amount of power generated by the generator 16, that is, the generator power generation output PREQGEN (refer to step S26), and performs limit processing on the generator power generation output PREQGEN (refer to step S27), and then obtains the rotation speed of the internal combustion engine 15, that is, the genera...

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Abstract

The purpose of the present invention is to improve the operation efficiency of an internal combustion engine while supplying a required drive force for an electric motor. A power generation control device determines the appropriateness of power generation by a power generator (16) in accordance with the state of a storage battery (11), and when allowing power generation, sets the amount of power generation equivalent to an output required for cruising in accordance with a travelling state, while setting an additional amount of power generation in accordance with the amount of power required depending on a vehicle state and the traveling state. When the amount of power generation and the additional amount of power generation are larger than a maximum amount of power generation, the power generation control device controls the internal combustion engine (15) and the power generator (16) on the basis of the maximum amount of power generation, and when the amount of power generation and the additional amount of power generation are equal to or smaller than the maximum amount of power generation, the power generation control device controls the internal combustion engine (15) and the power generator (16) on the basis of the amount of power generation and the additional amount of power generation.

Description

technical field [0001] The present invention relates to a power generation control device, and more particularly, to a power generation control device including a generator driven by an internal combustion engine, a storage battery for storing electric power generated by the generator, and a control device for controlling the internal combustion engine and the generator. Background technique [0002] Patent Document 1 (International Publication No. 2011 / 078189) discloses a hybrid vehicle capable of running in an EV running mode and a series running mode in which the electric power of an accumulator (battery) is used only. The running mode of the electric motor is a running mode in which the electric motor is driven by the power of the internal combustion engine and by the electric power generated by the generator (see claim 1). In addition, it is also disclosed that the required driving force of the electric motor is derived based on the vehicle speed and the opening degree ...

Claims

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Application Information

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IPC IPC(8): H02P9/04B60L50/15B60L50/16
CPCH02P9/04B60L1/003B60L1/06B60L3/0046B60L15/2009B60L2240/12B60L2240/34B60L2240/421B60L2240/423B60L2240/441B60L2240/443B60L2240/545B60L2240/547B60L2240/549B60L2260/44Y02T10/7072Y02T90/14Y02T10/72H02J7/1446Y02T10/92B60L53/14B60L50/61B60L50/16B60L58/14B60L58/20B60L58/24B60L58/15Y02T10/62Y02T10/64Y02T10/70B60L50/15
Inventor 中佐古享
Owner HONDA MOTOR CO LTD
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