Arrangement in an electric vehicle, electric vehicle and method
The electric vehicle charging system diagnoses plug insertion and detects faults through voltage level comparisons on CC1 and CC2 lines, ensuring safe operation by preventing unplanned driving with a plugged-in charging plug.
Patent Information
- Application Number
- DE102024200750
- Authority / Receiving Office
- DE · DE
- Patent Type
- Applications
- Current Assignee / Owner
- Filing Date
- 2024-01-29
- Publication Date
- 2025-07-31
AI Technical Summary
Existing electric vehicle charging systems may fail to detect a plugged-in charging plug due to defects in the CC2 circuit, potentially allowing vehicles to be driven off with the plug still inserted, posing safety risks.
An arrangement in the electric vehicle that includes a plug socket connected to a vehicle control unit via a CC1 line, allowing for diagnosis of charging components by comparing voltage levels on the CC1 and CC2 lines, and using a redundant information system to detect faults such as short circuits or line interruptions.
Prevents unintentional vehicle operation with a plugged-in charging plug by accurately detecting plug insertion status and identifying electrical faults, enhancing safety by providing error messages for user awareness and system correction.
Smart Images
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Abstract
Claims
[1] Arrangement in an electric vehicle (1), comprising: a plug socket (6) for charging the electric vehicle (1) and a vehicle control unit (3), wherein the plug socket (6) has at least one pin which can be connected to a CC1 line, wherein the plug socket (6) further comprises a connecting line (2) which connects the pin of the plug socket (6) to an input of the vehicle control unit (3), so that the vehicle control unit (3) is electrically connectable to the CC1 line, and wherein the vehicle control unit (3) is set to perform a diagnosis for at least one component involved in charging the electric vehicle (1) based on a voltage between the CC1 line and a reference point (4) when the vehicle control unit (3) is electrically connected to the CC1 line via the connecting line (2). [2] Arrangement in an electric vehicle (1) according to claim 1, characterized bythat the vehicle control unit (3) is further set to determine, when the vehicle control unit (3) is electrically connected to the CC1 line via the connecting line, based on the voltage whose value is in a first voltage range, that a plug for charging the electric vehicle (1) is not plugged into the plug socket (6). [3] Arrangement in an electric vehicle (1) according to claim 1 or 2, characterized by that the vehicle control unit (3) is further set to determine, when the vehicle control unit (3) is electrically connected to the CC1 line via the connecting line (2), based on the voltage whose value is in a second voltage range, that the plug for charging the electric vehicle (1) is plugged into the plug socket (6). [4] Arrangement in an electric vehicle (1) according to claim 3, characterized bythat the vehicle control unit (3) is further set to determine, when the vehicle control unit (3) is electrically connected to the CC1 line via the connecting line (2), based on the voltage whose value is in a first sub-range of the second voltage range, that the plug for charging the electric vehicle (1) is plugged into the plug socket (6), and that a switch (S) provided in the plug and electrically connected to the CC1 line and to the reference point (4) is closed. [5] Arrangement in an electric vehicle (1) according to claim 3 or 4, characterized bythat the vehicle control unit (3) is further set to determine, when the vehicle control unit (3) is electrically connected to the CC1 line via the connecting line (2), based on the voltage whose value is in a second sub-range of the second voltage range, that the plug for charging the electric vehicle (1) is plugged into the plug socket (6) and that the switch (S) is open. [6] Arrangement in an electric vehicle (1) according to one of the preceding claims, characterized by that the vehicle control unit (3) is further set to determine, when the vehicle control unit (3) is electrically connected to the CC1 line via the connecting line (2), that a short circuit to the battery (5) of the electric vehicle (1) exists based on the voltage whose value is in a third voltage range. [7] Arrangement in an electric vehicle (1) according to one of the preceding claims, characterized bythat the vehicle control unit (3) is further set to determine, when the vehicle control unit (3) is electrically connected to the CC1 line via the connecting line (2), that a short circuit to ground exists based on the voltage whose value is approximately zero. [8] Arrangement in an electric vehicle (1) according to one of the preceding claims, characterized by that the vehicle control unit (3) is further set to generate an error message due to unknown errors and / or line interruptions based on the voltage whose value is greater than zero and not in the first, second and third voltage range when the vehicle control unit (3) is electrically connected to the CC1 line via the connecting line (2). [9] Electric vehicle (1) comprising a battery (5) and the arrangement according to one of the preceding claims. [10] Method for diagnosing at least one component involved in charging an electric vehicle (1), comprising the following steps: Connecting (S10) a pin of a connector socket of the electric vehicle to an input of a vehicle control unit of the electric vehicle by a connecting line; Connecting (S20) the pin to a CC1 line so that the vehicle control unit is electrically connected to the CC1 line; and Performing (S30) a diagnosis for at least one component involved in charging the electric vehicle based on a voltage between the CC1 line and a reference point.
Citation Information
Patent Citations
CN000106274533A
CN000109774528A