# US 9,517,699 B2 · Motor vehicle having a storage for electric energy

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- Number: US 9,517,699 B2
- Document ID: US9517699B2
- Status: Granted
- Kind: B2
- Application number: 14/124,481
- Filed: 2012-02-01
- Published: 2014-04-10
- Granted: 2016-12-13
- Earliest claimed: 2011-06-07
- Assignees: Audi AG
- Applicants: Björn Elias; Reinhard Peer
- Inventors: Björn Elias; Reinhard Peer
- Web page: https://patentgrep.com/patent/US9517699B2

## CPC

- B60L 53/12: Inductive energy transfer
- B60L 3/0069: {relating to the isolation, e.g. ground fault or leak current}
- B60L 3/04: Cutting off the power supply under fault conditions (protective devices and circuit arrangements in general H01H; H02H)
- B60L 53/36: by positioning the vehicle
- B60L 53/39: with position-responsive activation of primary coils
- 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
- Y02T: CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION

## Abstract

The invention relates to a motor vehicle having a storage for electrical energy, which store is coupled to a coil into which electrical energy can be induced from outside the motor vehicle during a charging process. The vehicle includes a housing in which the coil is arranged, the housing being made of plastic toward the underside of the motor vehicle, and an optical waveguide is arranged in particular between two walls of the housing. When light from a light source is coupled into the optical waveguide and a detector detects the light, damage to the housing can be detected and the induction of electrical energy into the coil at a charging station can optionally be interrupted in order to avoid hazards to persons.

## Claims

### Claim 1

A motor vehicle, comprising:
a storage for electric energy;
a housing including a plastic material towards an underside of the motor vehicle;
a coil received in the housing and coupled with the storage for electric energy, said coil being constructed for introducing energy into the coil during a charging process from outside the motor vehicle;
at least one optical waveguide arranged in or on the plastic material into which light from a light source can be coupled;
a detector for receiving the light emitted by the light source; and
a control device configured to carry out the charging process and to prevent the charging process when the detector does not receive light in an expected manner.

### Claim 2 (depends on 1)

The motor vehicle of claim 1, wherein the at least one optical waveguide is arranged between two plastic walls of the housing.

### Claim 3 (depends on 1)

The motor vehicle of claim 1, wherein the at least one optical waveguide includes a glass fiber.

### Claim 4 (depends on 1)

The motor vehicle of claim 1, wherein the at least one optical waveguide forms a grid across the bottom side of the housing.

### Claim 5 (depends on 1)

The motor vehicle of claim 1, further comprising a cover closing the housing towards a topside of the motor vehicle, said cover comprising at least one of metal and electronic components.

### Claim 6 (depends on 5)

The motor vehicle of claim 5, wherein the electronic components are used during the charging process.

### Claim 7

A system, comprising:
a housing having two walls made of plastic;
an optical waveguide arranged between the two walls; and
a coil received in the housing.