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Charge control device for vehicle

By introducing a scheduled charging reservation unit into electric vehicles, the charging start time can be determined in advance and extended, combined with battery heating, to solve the problems of extended battery charging time and high heater capacity requirements, achieving dual optimization of charging efficiency and cost.

Active Publication Date: 2013-09-25
NISSAN MOTOR CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] However, in order to complete the heating of the battery before charging starts, it is necessary to heat the battery to a predetermined temperature in a short time. When heating a battery with a large capacity such as that used as a power source for driving, there is a problem that the heater Higher capacity requirements lead to higher costs

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0022] figure 1 It is an overall system diagram showing the charging control device for a vehicle according to the first embodiment. The vehicle of Example 1 is an electric vehicle that runs using only a battery as energy. Electric vehicle 100 has chargeable and dischargeable battery 11 , and drives the vehicle by converting DC power stored in battery 11 into AC power by inverter 32 and supplying it to drive motor 31 . In addition, the external power supply 50 is connected to the electric vehicle 100 by the charging cable 40, whereby the battery 11 receives electric power from the external power supply and is charged. For the type of external power supply 50, it is generally a commercial power supply in the case of ordinary charging, and a fast charger in the case of fast charging. figure 1 The way of normal charging is shown in . The commercial power supply 52 is generally powered through the power socket 51 .

[0023] The charging cable 40 is composed of a power plug 4...

Embodiment 2

[0049] Next, Example 2 will be described. The basic structure is the same as that of Embodiment 1, so only the differences will be described. Figure 5 It is a flowchart showing the timed charging control process executed in the charging control device of the second embodiment. The difference is that in Embodiment 1, it is judged whether to advance the start time of regular charging according to whether the battery heater 15 is in operation, but in Embodiment 2, it is judged whether to advance the start time of regular charging according to the battery temperature.

[0050] In step S1, it is judged whether there is a reservation for the timed charging time slot. If there is no reservation, this control flow ends, and if there is a reservation, it proceeds to step S2.

[0051] In step S2, the amount of insufficient charging electric power when the battery heater is operated is calculated. Specifically, the amount of power consumption obtained by multiplying the power consumpt...

Embodiment 3

[0063] Next, Example 3 will be described. The basic structure is the same as that of Embodiment 1, so only the differences will be described. Figure 7 It is a flowchart showing the timed charging control process executed in the charging control device of the third embodiment. In Embodiments 1 and 2, the required charging time extension amount is set as a time earlier than the timing charging start time based on the fact that the battery heater 15 continues to operate during charging. In other words, the timing advanced by the required charging time extension coincides with the check timing of the operating state and battery temperature. On the other hand, the third embodiment is different in that the operation of the battery heater 15 is estimated with high precision and the required charging time extension amount is calculated based on the estimated operation state.

[0064] In step S1, it is judged whether there is a reservation for the timed charging time slot, and if th...

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PUM

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Abstract

When a user sets a timed charge time slot using a timed charge reservation means in which a prescribed charge time slot and target charge amount can be arbitrarily defined, and a timed charge is to be carried out from a predefined timed charge initiation time, the present invention determines whether or not to advance the timed charge initiation time to a prescribed time before the timed charge initiation time. Thus enabled is the complete charging of a battery in a prescribed time without increasing the demand capacity of a heater.

Description

technical field [0001] The present invention relates to a charge control device for a vehicle capable of running using electric power from a battery. Background technique [0002] Patent Document 1 discloses a technique for controlling charging of a battery in a vehicle capable of running using electric power of the battery. In this publication, when it is judged that the charging of the battery cannot be completed within the specified time due to the decrease in battery temperature and the charging time becomes longer, the battery should be heated by a heater before the charging start time specified in advance so that the battery can be charged within the specified time. Complete charging. [0003] However, in order to complete the heating of the battery before charging starts, it is necessary to heat the battery to a predetermined temperature in a short time. When heating a battery with a large capacity such as that used as a power source for driving, there is a problem t...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02J7/04H01M10/50H02J7/00H01M10/44H01M10/48H01M10/60H01M10/615H01M10/625H01M10/633H01M10/6571
CPCH01M10/443H01M10/486Y02T90/14Y04S10/126H01M10/63H01M10/615H01M10/66Y02T10/7072B60L53/63B60L58/12B60L58/27Y02E60/00Y02T10/70Y02T90/12Y02E60/10H02J7/04H02J7/92H02J7/977H02J7/00H01M10/60H02J7/0071H02J7/007194B60L53/20Y02T90/16
Owner NISSAN MOTOR CO LTD
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