Method for protecting charging cable, and charging device
First Claim
Patent Images
1. A method for protecting a charging cable for a charging device for charging a traction battery of an electrically drivable vehicle, comprising:
- receiving, at an interface of the charging device, a physical connection to a charging cable, the charging cable comprising a set of contacts including at least;
at least one current transmission contact configured to communicate a charging current from the charging device, a pilot contact configured to communicate information between the charging device and the vehicle, and a pair of additional contacts connected to each other within the charging cable by a conductive path having an electrical resistance;
wherein the physical connection of the charging cable to the charging device establishes a connection of a resistance measuring device of the charging device and the pair of additional contacts of the charging cable;
in response to the physical connection of the charging cable to the charging cable, the resistance measuring device of the charging device determining a resistance value corresponding to a magnitude of the defined electrical resistance between the pair of additional contacts of the charging cable, the magnitude of the electrical resistance indicating current-carrying capacity of the charging cable; and
the resistance measuring device of the charging device generating and communicating, to a switching device of the charging device, a signal based on the resistance value determined; and
in response to receiving the signal from the resistance measuring device, the switching device of the charging device switching one of a plurality of line protection devices arranged in the charging device into the charging current path depending on the resistance value determined.
1 Assignment
0 Petitions
Accused Products
Abstract
A driving battery of a vehicle that can be electrically driven is charged by determining a resistance value that corresponds to the size of the electrical resistance between two contacts of the charging cable, where the size of the electrical resistance specifies the current-carrying capacity of the charging cable. As a function of the determined resistance value, one of a plurality of line protection devices which are disposed on the charging device is switched into the charge current path.
14 Citations
14 Claims
-
1. A method for protecting a charging cable for a charging device for charging a traction battery of an electrically drivable vehicle, comprising:
-
receiving, at an interface of the charging device, a physical connection to a charging cable, the charging cable comprising a set of contacts including at least;
at least one current transmission contact configured to communicate a charging current from the charging device, a pilot contact configured to communicate information between the charging device and the vehicle, and a pair of additional contacts connected to each other within the charging cable by a conductive path having an electrical resistance;wherein the physical connection of the charging cable to the charging device establishes a connection of a resistance measuring device of the charging device and the pair of additional contacts of the charging cable; in response to the physical connection of the charging cable to the charging cable, the resistance measuring device of the charging device determining a resistance value corresponding to a magnitude of the defined electrical resistance between the pair of additional contacts of the charging cable, the magnitude of the electrical resistance indicating current-carrying capacity of the charging cable; and the resistance measuring device of the charging device generating and communicating, to a switching device of the charging device, a signal based on the resistance value determined; and in response to receiving the signal from the resistance measuring device, the switching device of the charging device switching one of a plurality of line protection devices arranged in the charging device into the charging current path depending on the resistance value determined. - View Dependent Claims (2, 3, 4, 5, 6, 7)
-
-
8. A charging device for charging a traction battery of an electrically drivable vehicle using a charging cable, the charging device comprising:
-
an interface providing an electrical connection to the charging cable, the charging cable comprising a set of contacts including at least;
at least one current transmission contact configured to communicate a charging current from the charging device, a pilot contact configured to communicate information between the charging device and the vehicle, and a pair of additional contacts connected to each other within the charging cable by a conductive path having an electrical resistance;a measuring device that becomes connected to the pair of additional contacts of the charging cable upon connection of the charging cable to the interface of the charging device, the measuring device configured to determine a resistance value corresponding to a magnitude of the defined electrical resistance between the pair of additional contacts of the charging cable, the magnitude of the electrical resistance indicating current-carrying capacity of the charging cable, and to generate and transmit a signal based on the resistance value determined; at least two line protection devices having rated current intensities with different magnitudes; a switching device configured to switch one of the line protection devices into the charging current path; and a switching actuation device configured to receive the signal from the resistance measuring device and actuate the switching device to switch a selected one of the line protection devices into the charging current path depending on the resistance value determined. - View Dependent Claims (9, 10, 11, 12, 13, 14)
-
Specification