Charging control device and method for electric vehicle
A charging control method and technology for electric vehicles, applied in the direction of electric vehicle charging technology, electric vehicles, battery/fuel cell control devices, etc., can solve the problems of reducing the charging current and not being able to eliminate the overvoltage state, so as to avoid overvoltage status effect
Active Publication Date: 2021-01-01
MITSUBISHI MOTORS CORP
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Problems solved by technology
[0004] However, it takes a certain amount of time to reduce the charging current from the external power source
Therefore, even at the point of time when the electric device stops as in the case of the above patent document, the reduction of the charging current is started, the timing of the reduction is expected to be too late, and the increase in the charging current to the traction battery cannot be sufficiently reduced, Therefore, it is not possible to eliminate this overvoltage condition
Method used
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Embodiment Construction
[0029] Hereinafter, embodiments implementing the charge control apparatus and method for electric vehicles of the present invention will be described.
[0030] figure 1 is a diagram showing the overall configuration of an electric vehicle to which the charging control device and method in this embodiment are applied.
[0031] The vehicle 1 in this embodiment is a front-wheel drive vehicle in which front wheels 3 are driven by a traction motor 2 . The reducer 4 connected with the traction motor 2 is connected with the left front wheel and the right front wheel 3 through the drive shaft 5, the rotation of the traction motor 2 is reduced by the reducer 4, and then transmitted to the front wheels 3 through the drive shaft 5, so that the vehicle 1 travels . The traction motor 2 is connected to a traction battery 7 via an inverter 6 , and direct current (DC) from the traction battery 7 is converted into a three-phase alternating current (AC) by the inverter 6 and supplied to the t...
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The present invention provides a charge control apparatus for an electric vehicle, the electric vehicle including: a traction motor (2); a traction battery (7) to which charging current is supplied from an external power source (16) and that supplies current to the traction motor; and an electric device (8) actuated by part of the charging current during charging of the traction battery (7). The charge control apparatus includes: an instruction unit to instruct decrease of load of the electric device (8) in case that the electric device (8) is actuated during charging of the traction battery; a restriction unit to restrict the charging current after instruction of the decrease of load; and a load decreasing unit for decreasing load of the electric device (8) after restricting the charging current.
Description
technical field [0001] The present invention relates to a charge control device and method for an electric vehicle, and in particular, to a charge control device and a charge control device for an electric vehicle that uses part of the charging current to actuate an electric device during charging of a traction battery by an external power source. method. Background technique [0002] In such electric vehicles, when charging of the traction battery as a power source of the traction motor is required, the traction battery is charged by an external power source at a charging station or the like. Such electric vehicles are equipped with electric devices, such as electric water heaters, whose power source is the traction battery. For example, when the interior of the vehicle needs to be heated during charging, sometimes a part of the charging current is used directly to actuate the electric device. The electric current supplied to the water heater can be increased or decreased...
Claims
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IPC IPC(8): H02J7/00B60L53/00B60L53/14
CPCB60L53/00H02J7/0026H02J7/0088B60L1/003B60L1/06B60L2240/80B60L53/11Y02T10/70Y02T10/7072Y02T90/14B60H1/00392B60L2240/34B60L2240/549B60L58/13Y02T90/12
Inventor 小池和哉藤原晋哉初见典彦田纳晃一
Owner MITSUBISHI MOTORS CORP