Method for preheating a battery of an electrically operated motor vehicle, and charging device

Abstract

The invention relates to a method for preheating a battery (4) of an electrically driven motor vehicle (2), in particular an electric vehicle or a hybrid vehicle, wherein a charging process and a discharging process of the battery (4) are controlled in such a way that a minimum temperature (Tmin) of the battery (4) is attained at a departure time (tA) of the motor vehicle (2). The invention further relates to a charging device (6) for said type of motor vehicle (2) and to a motor vehicle (2) comprising said type of charging device (6).

Description

technical field

[0001] The invention relates to a method for preheating a battery of an electrically operated motor vehicle, in particular an electric vehicle or a hybrid vehicle. Furthermore, the invention relates to such a charging device for a motor vehicle as well as to a motor vehicle comprising such a charging device. Background technique

[0002] Rechargeable accumulators are installed in electrically driven motor vehicles, such as in electric vehicles or in hybrid vehicles including an electric drive. The accumulator is connected to the power grid by means of a charging device and charged if necessary. It is conceivable here that the charging process of the accumulator starts directly after the connection to the grid. If the vehicle has not been used for a relatively long period of time, for example at night, the charging process can therefore have ended for a relatively long period of time at the time of departure.

[0003] A method is disclosed in DE 10 2009 038...

Examples

Embodiment Construction

[0033] specific implementation plan

[0034] exist figure 1 An electrically driven motor vehicle 2 including a battery 4 is schematically shown in . The electrically driven motor vehicle 2 may be an electric vehicle or a hybrid vehicle including an electric drive. Furthermore, motor vehicle 2 has a charging device 6 with a connection 8 , by means of which charging device 6 can be connected to an electrical network 10 . Furthermore, the charging device 6 has a first connection 12 to a temperature sensor 14 . The temperature T of the battery 4 is measured by means of a temperature sensor 14 . The set departure time t is received by means of the second interface 16 of the charging device 6 A .

[0035] exist figure 1 In an exemplary embodiment, the second interface 16 is configured as a radio interface to a wireless network. In this regard, the departure time t A For example, it can be conveniently set up by means of a mobile phone for the user.

[0036] The control unit...

technical field

[0001] The invention relates to a method for preheating a battery of an electrically operated motor vehicle, in particular an electric vehicle or a hybrid vehicle. Furthermore, the invention relates to such a charging device for a motor vehicle as well as to a motor vehicle comprising such a charging device. Background technique

[0002] Rechargeable accumulators are installed in electrically driven motor vehicles, such as in electric vehicles or in hybrid vehicles including an electric drive. The accumulator is connected to the power grid by means of a charging device and charged if necessary. It is conceivable here that the charging process of the accumulator starts directly after the connection to the grid. If the vehicle has not been used for a relatively long period of time, for example at night, the charging process can therefore have ended for a relatively long period of time at the time of departure.

[0003] A method is disclosed in DE 10 2009 038...

Examples

Embodiment Construction

[0033] specific implementation plan

[0034] exist figure 1 An electrically driven motor vehicle 2 including a battery 4 is schematically shown in . The electrically driven motor vehicle 2 may be an electric vehicle or a hybrid vehicle including an electric drive. Furthermore, motor vehicle 2 has a charging device 6 with a connection 8 , by means of which charging device 6 can be connected to an electrical network 10 . Furthermore, the charging device 6 has a first connection 12 to a temperature sensor 14 . The temperature T of the battery 4 is measured by means of a temperature sensor 14 . The set departure time t is received by means of the second interface 16 of the charging device 6 A .

[0035] exist figure 1 In an exemplary embodiment, the second interface 16 is configured as a radio interface to a wireless network. In this regard, the departure time t A For example, it can be conveniently set up by means of a mobile phone for the user.

[0036] The control unit...

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