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Heating control device

A technology of a control device and a control unit, which is applied in the directions of control devices, battery/fuel cell control devices, circuit devices, etc., can solve problems such as power consumption, and achieve the effect of reducing power consumption and improving performance

Active Publication Date: 2018-05-11
HONDA MOTOR CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In this way, when the electric vehicle is parked, the energy used to warm the battery is electric power, and regardless of whether the electric vehicle is plugged in or not plugged in, power consumption is required to warm the battery

Method used

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Examples

Experimental program
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Effect test

no. 1 approach

[0049]The heating control device according to the first embodiment is mounted on plug-in electric vehicles such as EV (Electric Vehicle) and HEV (Hybrid Electric Vehicle) installed with an electric motor driven by electric power supplied from a battery as a drive source. vehicle. figure 1 It is a block diagram showing the configuration of the heating control device of the first embodiment. Such as figure 1 As shown, the heating control device of the first embodiment includes a motor 101, a battery 103, a PCU (Power Control Unit: power control unit) 105, a current sensor 107, a voltage sensor 109, a temperature sensor 111, a charger 113, a heater 115, Switching units 117 and 119 and an ECU (Electric Control Unit: Electronic Control Unit) 121 .

[0050] The electric motor 101 is a drive source that generates power for running the electric vehicle.

[0051] The storage battery 103 has a plurality of storage cells such as lithium-ion batteries and nickel-metal hydride batteri...

Embodiment 1

[0059] figure 2 It is a block diagram showing the internal configuration of ECU 121 in Example 1 of the first embodiment. Such as figure 2 As shown, the ECU 121 has a current / voltage acquisition unit 151 , a differential calculation unit 153 , an internal resistance calculation unit 155 , an open circuit voltage calculation unit 157 , an SOC derivation unit 159 , a temperature acquisition unit 161 , an effective capacity derivation unit 163 , and an SOC change estimation unit 165 , The effective capacity change estimation unit 167 and the energization control unit 169 .

[0060] The current / voltage acquisition unit 151 acquires the charging and discharging current Ib detected by the current sensor 107 and the terminal voltage Vb detected by the voltage sensor 109 . The differential calculation unit 153 performs differential calculations on the charge and discharge current Ib and the terminal voltage Vb acquired by the current / voltage acquisition unit 151 . The internal re...

Embodiment 2

[0071] Figure 4 It is a figure which shows the control related to the heating of the storage battery 103 using the heater 115 in Example 2 of 1st Embodiment. exist Figure 4 In the example shown, it is assumed that after the electric vehicle is driven in a very cold temperature environment, the plug 123 is not connected to the external power supply, and the state in which the electric vehicle is parked in the same temperature environment continues. Even if the temperature Tba of the battery 103 in the electric vehicle just finished running is 0°C, the temperature Tbat of the battery 103 falls because the outside air temperature To is extremely low (eg -40°C) lower than 0°C. However, if the battery 103 drops to the outside air temperature To, the output of the battery 103 will drop significantly and the electric vehicle cannot run. Therefore, it is necessary to keep the battery 103 at an absolute lower limit temperature T1 higher than the outside air temperature To (for examp...

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PUM

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Abstract

A heating control device comprising: a storage cell that supplies power to an electric motor in an electric vehicle; a heat-generation unit that heats the storage cell by using heat generated by current supplied thereto; an estimation unit that estimates change in effective capacitance when the heat-generation unit generates heat and heats the storage cell to a target temperature by using currentsupplied thereto as a result of power supply from the storage cell said estimation being on the basis of the effective capacitance corresponding to the temperature and state of charge of the storage cell; and a control unit that supplies current from the storage cell to the heat-generation unit only when an increase is expected in the effective capacitance estimated by the estimation unit.

Description

technical field [0001] The present invention relates to a heating control device for a storage battery mounted on an electric vehicle. Background technique [0002] Patent Document 1 describes an electric vehicle charging system that, when charging a battery of an electric vehicle, heats the battery by heat transfer from a heat storage material provided on the electric vehicle according to the temperature of the battery. According to this system, the storage battery can be heated by using the heat storage material installed in the electric vehicle, and there is no need to set aside part of the charging power to ensure heating power during charging. When the battery temperature is low, it is necessary to heat the battery in order to prevent performance degradation of the battery due to charging. However, by supplying the heat source at this time from the heat storage material of the electric vehicle, the power supplied by the household can be effectively used for the storage ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01M10/633B60L11/18H01M10/615H01M10/625H01M10/6571H02J7/00
CPCH01M10/625H01M10/615H01M10/633H01M10/6571H02J7/0063B60L1/02B60L2240/545B60L2240/547B60L2240/549B60L2240/80B60L2260/44B60L58/12B60L58/27B60L2240/36H01M2220/20B60L50/60Y02T10/70Y02T10/7072Y02T90/14Y02E60/10H02J7/007194H02J7/00H02J7/0068
Inventor 大垣彻釜谷英城见目由和藤卷圭祐
Owner HONDA MOTOR CO LTD
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