# US 11,299,025 B2 · Motor vehicle equipped with an impact protection device for underfloor elements

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- Number: US 11,299,025 B2
- Document ID: US11299025B2
- Status: Granted
- Kind: B2
- Application number: 17/435,336
- Filed: 2020-02-05
- Published: 2022-03-17
- Granted: 2022-04-12
- Earliest claimed: 2019-03-07
- Assignees: Psa Automobiles SA
- Applicants: Psa Automobiles SA
- Inventors: Nicolas Tropee; Ludovic Meresse
- Web page: https://patentgrep.com/patent/US11299025B2

## CPC

- B60K 1/04: of the electric storage means for propulsion
- F01N 3/00: Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust (electric control F01N9/00; monitoring or diagnostic devices for exhaust-gas treatment apparatus F01N11/00)
- H01M 10/658: by thermal insulation or shielding
- B60K 13/04: concerning exhaust
- B60K 2001/0416: {Arrangement in the rear part of the vehicle}
- B60K 2001/0438: {Arrangement under the floor}
- B60R 13/0869: {for protecting heat sensitive parts, e.g. electronic components}
- B60R 13/0876: {for mounting around heat sources, e.g. exhaust pipes}
- B60Y 2306/01: Reducing damages in case of crash, e.g. by improving battery protection
- F01N 2260/20: for heat or sound protection, e.g. using a shield or specially shaped outer surface of exhaust device
- Y02E 60/10: Energy storage using batteries
- Y02T 10/12: Improving ICE efficiencies
- Y02T 10/70: Energy storage systems for electromobility, e.g. batteries
- B60K: ARRANGEMENT OR MOUNTING OF PROPULSION UNITS OR OF TRANSMISSIONS IN VEHICLES; ARRANGEMENT OR MOUNTING OF PLURAL DIVERSE PRIME-MOVERS IN VEHICLES; AUXILIARY DRIVES FOR VEHICLES; INSTRUMENTATION OR DASHBOARDS FOR VEHICLES; ARRANGEMENTS IN CONNECTION WITH COOLING, AIR INTAKE, GAS EXHAUST OR FUEL SUPPLY OF PROPULSION UNITS IN VEHICLES
- F01N: GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL-COMBUSTION ENGINES (arrangements in connection with gas exhaust of propulsion units in vehicles B60K13/00; combustion-air intake silencers specially adapted for, or arranged on, internal-combustion engines F02M35/00; protecting against, or damping, noise in general G10K11/16)
- H01M: PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- B60R: VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR
- B60Y: INDEXING SCHEME RELATING TO ASPECTS CROSS-CUTTING VEHICLE TECHNOLOGY
- Y02E: REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02T: CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION

## Abstract

A motor vehicle comprises an impact protection device for a battery (1) mounted under the floor of the vehicle and separated from an exhaust muffler (2) by an intermediate heat shield (3), wherein, the device comprises a cushion (4) fastened opposite the battery (1) on the heat shield (3), the cushion (4) being able to deform when the muffler (2) moves forward contacting the battery (1) in order to absorb the kinetic energy resulting from an impact on the vehicle.

## Claims

### Claim 1

A motor vehicle equipped with an impact protection device for a battery mounted under a floor of said motor vehicle and separated from an exhaust muffler by an intermediate heat shield, wherein said impact protection device comprises a cushion fastened opposite the battery on said intermediate heat shield, said cushion being adapted to deform when the exhaust muffler moves toward and contacts the battery in order to absorb kinetic energy resulting from an impact on said motor vehicle.

### Claim 2 (depends on 1)

The motor vehicle according to claim 1, wherein the cushion has a larger surface than a face of the battery situated opposite the cushion.

### Claim 3 (depends on 1)

The motor vehicle according to claim 1, wherein the cushion extends at least over a height of a portion of the exhaust muffler projecting toward the front of the exhaust muffler.

### Claim 4 (depends on 3)

The motor vehicle according to claim 3, wherein the cushion has an extra thickness of between 0.5 and 2.0 cm opposite the portion projecting toward the front of the exhaust muffler.

### Claim 5 (depends on 1)

The motor vehicle according to claim 1, wherein the cushion has a uniform thickness of between 0.5 and 2.0 cm.

### Claim 6 (depends on 1)

The motor vehicle according to claim 1, wherein the cushion extends over the entire height of a front face of the exhaust muffler.

### Claim 7 (depends on 1)

The motor vehicle according to claim 1, wherein the cushion is made of a deformable material, the specific gravity of which is between 0.1 and 0.65.

### Claim 8 (depends on 1)

The motor vehicle according to claim 1, wherein the cushion is fastened to a front face of said heat shield by gluing.

### Claim 9 (depends on 1)

The motor vehicle according to claim 1, wherein the cushion and the heat shield are made in one piece.

### Claim 10 (depends on 1)

The motor vehicle according to claim 1, wherein said battery is a hybrid vehicle traction battery mounted in front of the exhaust muffler, said cushion being adapted to absorb the kinetic energy resulting from an impact at a rear of said motor vehicle.