# US 11,440,428 B2 · Power management system for a motor vehicle

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- Number: US 11,440,428 B2
- Document ID: US11440428B2
- Status: Granted
- Kind: B2
- Application number: 16/633,760
- Filed: 2018-07-25
- Published: 2021-05-27
- Granted: 2022-09-13
- Earliest claimed: 2017-07-26
- Assignees: Sono Motors GmbH
- Applicants: Sono Motors GmbH
- Inventors: Jona Christians; Laurin Hahn
- Web page: https://patentgrep.com/patent/US11440428B2

## CPC

- B60L 53/62: in response to charging parameters, e.g. current, voltage or electrical charge
- B60L 8/003: {Converting light into electric energy, e.g. by using photo-voltaic systems}
- B60L 50/60: using power supplied by batteries (in combination with fuel cells B60L50/75)
- B60L 53/16: Connectors, e.g. plugs or sockets, specially adapted for charging electric vehicles
- B60L 53/22: Constructional details or arrangements of charging converters specially adapted for charging electric vehicles
- B60L 53/305: {Communication interfaces}
- B60L 53/51: Photovoltaic means
- B60L 53/53: Batteries
- B60L 53/665: {Methods related to measuring, billing or payment}
- B60L 53/68: Off-site monitoring or control, e.g. remote control
- B60L 55/00: Arrangements for supplying energy stored within a vehicle to a power network, i.e. vehicle-to-grid [V2G] arrangements
- B60L 58/12: responding to state of charge [SoC]
- G05B 15/02: electric
- G06Q 30/04: Billing or invoicing
- G06Q 50/06: Energy or water supply
- H02J 7/35: with light sensitive cells
- H02J 7/90: Regulation of charging or discharging current or voltage
- B60L 53/18: Cables specially adapted for charging electric vehicles
- B60L 2210/10: DC to DC converters
- H02J 2207/20: Charging or discharging characterised by the power electronics converter
- Y02E 60/00: Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02T 10/92: Energy efficient charging or discharging systems for batteries, ultracapacitors, supercapacitors or double-layer capacitors specially adapted for vehicles
- Y02T 90/16: Information or communication technologies improving the operation of electric vehicles
- Y02T 90/167: Systems integrating technologies related to power network operation and communication or information technologies for supporting the interoperability of electric or hybrid vehicles, i.e. smartgrids as interface for battery charging of electric vehicles [EV] or hybrid vehicles [HEV]
- Y04S 10/126: the energy generation units being or involving electric vehicles [EV] or hybrid vehicles [HEV], i.e. power aggregation of EV or HEV, vehicle to grid arrangements [V2G]
- Y04S 30/12: Remote or cooperative charging
- 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
- G05B: CONTROL OR REGULATING SYSTEMS IN GENERAL; FUNCTIONAL ELEMENTS OF SUCH SYSTEMS; MONITORING OR TESTING ARRANGEMENTS FOR SUCH SYSTEMS OR ELEMENTS (systems for controlling or regulating non-electric variables G05D; systems for regulating electric or magnetic variables G05F; control devices or systems insofar as characterised by mechanical features only G05G)
- G06Q: INFORMATION AND COMMUNICATION TECHNOLOGY [ICT] SPECIALLY ADAPTED FOR ADMINISTRATIVE, COMMERCIAL, FINANCIAL, MANAGERIAL OR SUPERVISORY PURPOSES; SYSTEMS OR METHODS SPECIALLY ADAPTED FOR ADMINISTRATIVE, COMMERCIAL, FINANCIAL, MANAGERIAL OR SUPERVISORY PURPOSES, NOT OTHERWISE PROVIDED FOR
- H02J: ELECTRIC POWER NETWORKS; CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- Y02E: REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02T: CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y04S: SYSTEMS INTEGRATING TECHNOLOGIES RELATED TO POWER NETWORK OPERATION, COMMUNICATION OR INFORMATION TECHNOLOGIES FOR IMPROVING THE ELECTRICAL POWER GENERATION, TRANSMISSION, DISTRIBUTION, MANAGEMENT OR USAGE, i.e. SMART GRIDS

## Abstract

The present disclosure relates to a power management system for a motor vehicle, the motor vehicle including at least one energy storage device and at least one solar cell for generating electrical energy, the system being provided with a charging device which is designed to both charge the energy storage device with electrical energy from an external energy source and to supply an external consumer with electrical energy from the energy storage device and/or from the solar cell, the charging device including a DC-DC converter, an inverter and a rectifier.

## Claims

### Claim 1

A power management system for a motor vehicle, the motor vehicle comprising at least one energy storage device and at least one solar cell for generating electrical energy, said power management system being provided with a charging device which is designed to both charge the energy storage device with electrical energy from an external energy source and to supply an external consumer with electrical energy from at least one of the energy storage device and the solar cell, wherein:
the charging device comprises a DC-DC converter, by means of which both a voltage of a direct current supplied from the external energy source to the energy storage device may be converted and by means of which a voltage of a direct current supplied from the energy storage device and/or the solar cell to the external consumer may be converted; and
the charging device comprises an inverter and a rectifier, by means of which an alternating current supplied by the external energy source to the energy storage device may be converted into a direct current and by means of which a direct current supplied by the at least one of energy storage device and the solar cell to the external consumer may be converted from a direct current into an alternating current, characterised in that
the power management system comprises a control apparatus by means of which an energy supply of the external consumer can be enabled by the charging device, and
the control apparatus is configured to connect to at least one control device provided as a smartphone, by means of which an enable command to enable the charging of the external consumer can be transmitted to the control apparatus, wherein depending on the enabling of the energy supply to the external consumer the control apparatus unlocks a cover element for an electrical connection of the charging device to the external consumer, in particular a plug and/or a socket.

### Claim 2 (depends on 1)

The power management system according to claim 1, wherein at least one of the DC-DC converter, the inverter and the rectifier are formed by a common power converter component.

### Claim 3 (depends on 1)

The power management system according to claim 1, wherein at least one of the DC-DC converter, the inverter and the rectifier are permanently integrated in the vehicle.

### Claim 4 (depends on 1)

The power management system according to claim 1, wherein at least one of the DC-DC converter, the inverter and rectifier are external to the vehicle.

### Claim 5 (depends on 1)

The power management system according claim 1, wherein the charging device is of modular design and at least one of the DC-DC converter, the inverter and the rectifier are designed as modular elements of the charging device which may be assembled by the vehicle owner.

### Claim 6 (depends on 1)

The power management system according claim 1, wherein:
the charging device is designed to deliver only so much electrical energy that a state of charge of the energy storage device does not fall below a definable minimum state of charge, and
the charging device is designed to deliver energy only during at least one of a definable charging period and a definable charging duration.

### Claim 7 (depends on 1)

The power management system according claim 1, wherein:
the minimum state of charge, charging period and charging duration may be set by means of the control apparatus.

### Claim 8 (depends on 7)

The power management system according to claim 7, the external energy source is an additional motor vehicle equipped with a power management system and/or the external consumer is an additional motor vehicle.

### Claim 9 (depends on 7)

The power management system according to claim 7, wherein:
the control apparatus comprises a reader, in particular a card reader and/or a biometric reader, by means of which the energy supply of the external consumer may be enabled depending on a read operation.

### Claim 10 (depends on 1)

The power management system according to claim 1, wherein the power management system includes a billing device which calculates a price amount for the energy delivered to the external consumer based on a definable price, with information about at least the amount of energy delivered, the price and the price amount being transmitted to the smartphone as the control device.

### Claim 11 (depends on 9)

The power management system according to claim 9, wherein the control apparatus is designed to transmit at least one of a query regarding enabling, a definable minimum state of charge and a definable price to the at least one control device after the vehicle has been parked.

### Claim 12 (depends on 1)

A Network with at least two power management systems according to claim 1, the two power management systems being electrically interconnected, wherein at least a first one of the two power management systems (12) acts at least temporarily as an external consumer for the other power management system, and at least one other of the two power management systems acts at least temporarily as a power source for the first power management system.