US 11,654,784 B2
Electrically driven automobile with a power pack and retrofit thereof
Mads Bang, Stovring (DK); Peter Leander Jensen, Svenstrup (DK); Anders Risum Korsgaard, Aalborg (DK); and Martin Stenild Gron, Skals (DK)
Assigned to BLUE WORLD TECHNOLOGIES HOLDING APS, Aalborg Ost (DK)
Appl. No. 17/769,915
Filed by BLUE WORLD TECHNOLOGIES HOLDING APS, Aalborg Ost (DK)
PCT Filed Oct. 8, 2020, PCT No. PCT/DK2020/050277
§ 371(c)(1), (2) Date Apr. 18, 2022,
PCT Pub. No. WO2021/078343, PCT Pub. Date Apr. 29, 2021.
Claims priority of provisional application 62/923,677, filed on Oct. 21, 2019.
Prior Publication US 2022/0379742 A1, Dec. 1, 2022
Int. Cl. B60K 1/04 (2019.01); B60K 15/03 (2006.01); B60L 50/70 (2019.01); H01M 8/2475 (2016.01)
CPC B60L 50/70 (2019.02) [B60K 1/04 (2013.01); H01M 8/2475 (2013.01); B60K 2001/0438 (2013.01); B60K 2015/03315 (2013.01); B60L 2200/46 (2013.01)] 8 Claims
OG exemplary drawing
 
1. A method of extending the range of an electrically powered automobile by retrofitting an electric power pack in the automobile, the power pack of the automobile, prior to retrofit, comprising a casing and batteries but no fuel cell inside the casing for providing power to electrical motors that rotate wheels of the automobile only by the batteries, the batteries of the power pack being dimensioned to provide power enough for electrically propelling the automobile over a minimum range of a distance of more than 100 km, wherein the method comprises retrofitting the power pack by either modifying the power pack of the automobile or by removing the power pack from the automobile and installing an exchange power pack into the automobile; wherein the retrofitted power pack has electrical connectors for delivering electrical power to the electrical motors; wherein a fuel tank is provided as part of the automobile separate from the retrofitted power pack;
wherein the method, as part of the retrofit, comprises providing a fuel cell system inside the casing of the modified power pack or inside the casing of a similarly dimensioned retrofit casing of the exchange power pack, the fuel cell system being provided in addition to the batteries inside the casing and being electrically connected to the batteries in the casing for charging the batteries inside the casing by the fuel cell system and for providing electrical power by the fuel cell for the electrical motors,
wherein the method further comprises propelling the automobile after retrofit with a hybrid power system inside the casing, the hybrid power system comprising batteries inside the casing and the fuel cell system inside the casing; wherein the retrofitted power pack has fuel connectors for receiving fuel for the fuel cell through a fuel pipe from the fuel tank and coolant connectors for connecting to a cooling radiator of the automobile and for circulation of cooling liquid through the power pack;
wherein the casing of the power pack after retrofit comprises a first compartment that contains the batteries and at least one further compartment containing the fuel cell system with a thermally insulating wall between the first compartment and the at least one further compartment for thermally separating the first compartment from the at least one further compartment of fuel cell system by the first thermally insulating wall, wherein the at least one further compartment comprises at least two further compartments with thermally insulating walls for separating the at least two further compartments in the casing from each other by the further thermally insulating walls, wherein one of the further compartments contains the fuel cell and another compartment contains a power management system, which is an electronic control system for power management of the fuel cell and the batteries;
wherein the fuel cell is a high temperature polymer electrolyte membrane HT-PEM fuel cell, wherein the retrofitted power pack contains a reformer for catalytic reaction of alcohol and water into syngas for the fuel cell;
wherein the method comprises after retrofitting
providing alcohol in the fuel tank,
receiving the alcohol from the fuel tank by the power pack,
using the reformer for catalytic reaction of an evaporated mix of the alcohol and water into syngas, and providing the syngas to the fuel cell,
operating the fuel cell at a temperature in the range of 120-200° C.