Charge Control System
First Claim
1. A charge control system for use in an electric vehicle that is mounted thereon for controlling charging of an in-vehicle battery by an external power source, the system comprising:
- an SOC detection unit that detects an SOC of the in-vehicle battery;
a battery temperature detection unit that detects a battery temperature of the in-vehicle battery;
a battery temperature control unit that controls a cooling device that cools the in-vehicle battery with a predetermined cooling capacity and a heating device that heats the in-vehicle battery with a predetermined heating capacity based on the battery temperature detected by the battery temperature detection unit;
a charge control unit that controls a charge current and a charge voltage upon charging the in-vehicle battery by the external power source;
whereinthe charge control unit switches between a first charging mode in which the charge current is controlled so as to reach a constant value and a second charging mode in which the charge voltage is controlled so as to reach a constant value based on the SOC detected by the SOC detection unit, andthe battery temperature control unit controls at least one of the cooling device and the heating device such that the cooling capacity and/or the heating capacity in the second charging mode are higher than the cooling capacity and/or the heating capacity in the first charging mode.
1 Assignment
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Accused Products
Abstract
The charge control system includes at least a battery temperature control device, a cooling device, a heating device, and an integrated control device. The battery control device detects SOC of a battery. Based on the detected SOC, the integrated control device switches between a first charging mode in which the battery is charged at a substantially constant current and a second charging mode in which the battery is charged at a substantially constant voltage. In the second charging mode, the battery temperature control device performs rapid cooling control to control the cooling device such that it has a cooling capacity in the second charging mode higher than a cooling capacity in the first charging mode. Thus, the battery temperature is appropriately controlled to increase a cruising distance even when the electric vehicle is run immediately after completion of charging.
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Citations
17 Claims
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1. A charge control system for use in an electric vehicle that is mounted thereon for controlling charging of an in-vehicle battery by an external power source, the system comprising:
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an SOC detection unit that detects an SOC of the in-vehicle battery; a battery temperature detection unit that detects a battery temperature of the in-vehicle battery; a battery temperature control unit that controls a cooling device that cools the in-vehicle battery with a predetermined cooling capacity and a heating device that heats the in-vehicle battery with a predetermined heating capacity based on the battery temperature detected by the battery temperature detection unit; a charge control unit that controls a charge current and a charge voltage upon charging the in-vehicle battery by the external power source;
whereinthe charge control unit switches between a first charging mode in which the charge current is controlled so as to reach a constant value and a second charging mode in which the charge voltage is controlled so as to reach a constant value based on the SOC detected by the SOC detection unit, and the battery temperature control unit controls at least one of the cooling device and the heating device such that the cooling capacity and/or the heating capacity in the second charging mode are higher than the cooling capacity and/or the heating capacity in the first charging mode. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17)
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Specification