# US 2014/0197793 A1 · Charging Apparatus for a Vehicle with Seven Electrical Contacts

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- Number: US 2014/0197793 A1
- Document ID: US20140197793A1
- Status: Published application
- Kind: A1
- Application number: 14/212,248
- Filed: 2014-03-14
- Published: 2014-07-17
- Earliest claimed: 2011-09-16
- Assignees: Bayerische Motoren Werke Aktiengesellschaft
- Applicants: Bayerische Motoren Werke Aktiengesellschaft
- Inventors: Torsten HERZOG; Josef KRAMMER; Michael RESPONDEK; Robert WEBER
- Web page: https://patentgrep.com/patent/US20140197793A1

## CPC

- B60L 53/16: Connectors, e.g. plugs or sockets, specially adapted for charging electric vehicles
- B60L 53/11: {DC charging controlled by the charging station, e.g. mode 4}
- B60L 53/18: Cables specially adapted for charging electric vehicles
- B60L 53/20: characterised by converters located in the vehicle
- H02J 4/25: for transfer of electric power between AC and DC networks, e.g. for supplying the DC section within a load from an AC mains system
- H02J 7/02: for charging batteries from AC mains by converters
- H02J 2105/37: exchanging power with electric vehicles [EV] or with hybrid electric vehicles [HEV]
- H02J 2207/40: adapted for charging from various sources, e.g. AC, DC or multivoltage
- Y02T 10/70: Energy storage systems for electromobility, e.g. batteries
- Y02T 10/7072: Electromobility specific charging systems or methods for batteries, ultracapacitors, supercapacitors or double-layer capacitors
- Y02T 90/12: Electric charging stations
- Y02T 90/14: Plug-in electric vehicles
- B60L: PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES (arrangements or mounting of electrical propulsion units or of plural diverse prime-movers for mutual or common propulsion in vehicles B60K1/00, B60K6/20; arrangements or mounting of electrical gearing in vehicles B60K17/12, B60K17/14; preventing wheel slip by reducing power in rail vehicles B61C15/08; dynamo-electric machines H02K; control or regulation of electric motors H02P); SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES (electric coupling devices combined with mechanical couplings of vehicles B60D1/64; electric heating for vehicles B60H1/00); ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL (control or regulation of electric motors H02P); MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
- H02J: ELECTRIC POWER NETWORKS; CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- Y02T: CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION

## Abstract

A vehicle charging apparatus includes a charging source, a charging plug, a charging socket, a charging control device, an alternating-current charging device and a power switching device. The charging socket has seven electrically assignable contacts, the first contact being connected as a pilot contact by way of a pilot line with the charging control device, the second contact being connected as proximity contact by way of a proxy line with the charging control device, the third contact being connected as a protective grounding conductor contact by way of a ground line with the vehicle ground, the fourth contact being connected as a neutral conductor contact by way of a neutral line with the alternating-current charging device, the fifth contact being connected as a phase 1 contact by way of a phase 1 line with the alternating-current charging device, the sixth contact being connectable as a positive direct-current contact by way of a DC+ line and by way of the power separating device with an energy accumulator, and the seventh contact being connectable as a negative direct-current contact by way of a DC− line and by way of the power separating device with the energy accumulator. The DC+ line is connected by way of a first electric branch line with the neutral line or the phase 1 line, and the DC− line is connected by way of a second electric branch line with the neutral line or the phase 1 line.

## Claims

### Claim 1

A charging apparatus for charging an energy accumulator of a vehicle via a charging source having a charging plug, the charging apparatus comprising:
a charging control device of the vehicle;
an alternating-current charging device of the vehicle;
a power switching device of the vehicle,
a charging socket of the vehicle, the charging socket comprising seven electrically assignable contacts, wherein
a first contact is connected as a pilot contact by way of a pilot line with the charging control device,
a second contact is connected as a proximity contact by way of a proxy line with the charging control device,
a third contact is connected as a protective grounding conductor contact by way of a ground line with vehicle ground,
a fourth contact is connected as a neutral conductor contact by way of a neutral line with the alternating-current charging device,
a fifth contact is connected as a phase 1 contact by way of a phase 1 line with the alternating-current charging device,
a sixth contact is connectable as a positive direct-current contact by way of a DC+ line and by way of the power separating device with the energy accumulator,
a seventh contact is connectable as a negative direct-current contact by way of a DC− line and by way of the power separating device with the energy accumulator,
the DC+ line is connected via a first electric branch line with one of the neutral line or the phase 1 line, and
the DC− line is connected by way of a second electric branch line with the other of the neutral line or the phase 1 line.

### Claim 2 (depends on 1)

The vehicle charging apparatus according to claim 1, further comprising:
a protective cap configured for the charging socket, wherein
the protective cap is openable into an opened position and closeable to provide a closed position, and
in the closed position, the positive direct-current contact and the negative direct-current contact are covered.

### Claim 3 (depends on 2)

The vehicle charging apparatus according to claim 2, further comprising:
a sensor configured to detect a position of the protective cap;
a data connection arranged between the sensor and the charging control device, wherein
a detected position of the protective cap is transmitted via the data connection from the sensor to the charging control device.

### Claim 4 (depends on 3)

The vehicle charging apparatus according to claim 3, wherein
a first charging plug is attachable to the charging socket to form a plug-socket connection when the protective cap is in the opened position or the closed position,
the first charging plug comprises at least three poles and no more than five poles, at least three core poles of the first charging plug being electrically assigned,
when the plug-socket connection is established via the first charging plug, the first, second, and third contacts of the charging socket are connected with same assignments with the three core poles of the first charging plug,
when the plug-socket connection is establish via the first charging plug and the charging socket, the no more than five poles are connected with associated ones of the first, second, third, fourth, and fifth contacts of the charging socket, and
when the plug-socket connection is establish with the first charging plug, the protective cap is in a closed position or an opened position.

### Claim 5 (depends on 4)

The vehicle charging apparatus according to claim 4, wherein when the plug-socket connection is establish with the first charging plug, in a case of an electric assignment of the fourth contact and the fifth contact with alternating current from the charging source, the energy accumulator is chargeable via the alternating-current charging device while a power connection is separated by the power switching device.

### Claim 6 (depends on 4)

The vehicle charging apparatus according to claim 4, wherein
when the plug-socket connection is established with the first charging plug, in a case of an electric assignment of the fourth contact and fifth contact with direct current from the charging source, the energy accumulator is chargeable when a power connection is established by a power switching device and the protective cap is in the closed position.

### Claim 7 (depends on 3)

The vehicle charging apparatus according to claim 3, wherein
a second charging plug is attachable to the charging socket when the protective cap is in an open condition to form a plug-socket connection,
the second charging plug comprises at least three poles and no more than seven poles,
at least three core poles of the second charging plug are electrically assigned,
when the plug-socket is established via the second charging plug, the first, second, and third contacts of the charging socket are connected with associated ones of the at least three core poles of the second charging plug, and
when the plug-socket connection is established with the second charging plug, the no more than seven poles are connected with associated ones of the first through seventh contacts of the charging socket.

### Claim 8 (depends on 7)

The vehicle charging apparatus according to claim 7, wherein
when the plug-socket connection is established with the second charging plug, with the electric assignment of the sixth contact and the seventh contact with direct current from the charging source, the energy accumulator is chargeable when the power connection is established by the power switching device.

### Claim 9 (depends on 7)

The vehicle charging apparatus according to claim 7, wherein
when the plug-socket connection is established with the second charging plug, in a case of an electric assignment of the fourth contact and a fifth contact with alternating current from the charging source, the energy accumulator is chargeable by way of the alternating-current charging device while the power connection is separated by the power switching device.