Charging in Electric Vehicles (EV) - DexPatent · One-way communication may be ... reservation certificate is authentic using the access device to activate the electric vehicle charger

Charging in

Electric Vehicles (EV)

April 2019

Technology Innovation Alert

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Technology Innovation Alert – Charging in Electric Vehicles

Technology Innovation Alert for the month of April 2019 2

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Charging in Electric Vehicles (EV)

• An Electric Vehicle (EV) uses

electric motors or traction motors

for propulsion

• An electric vehicle charging

station is an element in an

infrastructure that supplies

electric energy for the recharging

of plug-in electric vehicles

including electric cars,

neighborhood electric vehicles

and plug-in hybrids.


Highlights


Interesting innovation

Automatically parked to

charging portChina (54%)

Most active jurisdiction

Grant3

Applications

Expired4

19

April 2019


Highlights


• Audi

• Beijing Automotive group

• BMW

• Ford

• GM Global Technology

Operations

• Nissan

• Shenzhen Sunway

Communication

• NEC

Large companies• Amitelecom

• Beijing New Energy Automobile

• Guizhou Changjiang

Automobile

• Hummingbird EV

• Liberty Plugins

• LSIS Co Ltd

• New Flyer Industries

• Sichuan Yaochengxin

Technology

• Witricity Corporation

Small and Medium Enterprises

Key players


Highlights


Individual Inventor

• Dongfeng

• Ren Rongyuan

• Yu Tao

• Zhao Yongtao• Chongqing Vocational

College Of Transportation

• Jiangsu University

• Nanjing Normal University

Universities / Research Centers

State owned enterprises

• State Grid

Key players


Highlights


WIPO (4%)

United States (42%)

China (54%)

Geographical distribution of innovations


Highlights

Technology Innovation Alert for the month of April 2019

Key features and technical innovations in Electric Vehicle charging covered in this report

8

• Wireless charging• Charging schedule

management• Capacitive plates• Coupling principle• Lifting mechanism • Parallel charging • Information sharing• Reservation system • Real-time monitoring• Power grid management

• Speech control system• Automatic pilot system• Charging control system• Charging station paring• Server computer system• EV intelligent charging• Overhead charging system• Battery management system• Vehicle monitoring system• Information sharing system• Vehicle-side charging interface


Highlights


Key features and technical innovations in Electric Vehicle charging covered in this report

9

• Conductive tracks on roadway• Image or video data analysis• Real-time monitoring battery• Robots for wireless charging• Vehicle distance positioning• Map navigation • On-vehicle charging interface• WIFI enabled charging station• Charging compatibility of WIFI• Charging time controlling

system

• Vehicle to vehicle charge sharing• Charging and traction control

system• Continuous wireless charging

method• Data sharing between charging

stations• Vehicle and charging port

monitoring system• Switching mechanism for coupling

and decoupling


Problems and proposed solutions


Charging of large scale vehicle in

peak time will lead to inefficiency in

power back up

Real time power grid load management

system

The charging is inefficient due to

small number of charging pile Power sharing between two electric vehicles

The wireless charging is done in the

rest modThe wireless charging is done during the

running mode


Problems and proposed solutions


One-way communication may be

insufficient to facilitate efficient

charging

WiFi enabled charging station with

neighborhood aware network (NaN)

Mismatching of transmitter and

receiver coils and missing of accurate

positioning

Two dimension dissymmetry loop

constructions

https://www.dexpatent.com/contactus.php

Technology Innovation Alert – Charging in Electric Vehicle


Overview of Key Patents


Patent Family Count

DexPatent Abstract

Individual inventor

Innovation Involves


Innovation Involves

13

EV wireless charging system, automatically

identify mileage remaining is insufficient,

using map to find nearest wireless charging

station & charged, perform real time

monitoring of the charging procedure

Innovation Involves

C N 1 0 9 5 9 1 6 2 8 0

Wireless charging system

✓ Automatic pilot system

✓ Map navigation

✓ Wireless charging module

✓ Real-time monitoring

battery

Dongfeng

https://worldwide.espacenet.com/publicationDetails/biblio?CC=CN&NR=109591628A&KC=A&FT=D&ND=3&date=20190409&DB=&locale=en_EP


Patent Family Count

DexPatent Abstract

Company

Innovation Involves


Innovation Involves

14

Innovation Involves

U S 2 0 1 9 0 1 0 6 0 0 5 3

Electric Vehicle

A motor vehicle comprises an energy

storage device coupled to first & second

vehicle-side charging interface for parallel

charging of the electrical energy storage

device using charging stations

✓ Parallel charging

✓ On-vehicle charging

interface

✓ Vehicle-side charging

interface

✓ Coupling principle

http://appft.uspto.gov/netacgi/nph-Parser?Sect1=PTO1&Sect2=HITOFF&p=1&u=/netahtml/PTO/srchnum.html&r=1&f=G&l=50&d=PG01&s1=20190106005.PGNR.

https://worldwide.espacenet.com/publicationDetails/inpadocPatentFamily?CC=US&NR=2019106005A1&KC=A1&FT=D&ND=&date=20190411&DB=&locale=

https://www.audi.com/en.html


Patent Family Count

DexPatent Abstract

Small and medium enterprises

Innovation Involves


Innovation Involves

15

EV charging system includes plurality of

parallel arrangements of charger connected

to the corresponding charging device, charge

management system coordinating the

current to each of the parallel charger to

charge the battery

Innovation Involves

C N 1 0 9 5 7 2 4 5 6

✓ Parallel arrangements of charger

✓ charge management device

0

Charging systemGuizhou Changjiang Automobile

http://worldwide.espacenet.com/textdoc?IDX=CN109270600

https://worldwide.espacenet.com/publicationDetails/inpadocPatentFamily?CC=CN&NR=109270600A&KC=A&FT=D&ND=3&date=20190125&DB=EPODOC&locale=en_EP

http://www.changjiangev.com/


Patent Family Count

DexPatent Abstract

Company

Innovation Involves


Innovation Involves

16

Innovation Involves

C N 1 0 9 5 5 2 0 8 6 0


Wireless charging system for electric

automobile includes RF transmitter and

receiver, four inductances, four capacitors,

triodes, transistor and power supply for high

efficiency of transmission

✓ Wireless charging system

✓ RF transmitter / receiver

✓ Inductive coupling

✓ Capacitance

Shenzhen Sunway Communication

https://worldwide.espacenet.com/publicationDetails/biblio?II=0&ND=3&adjacent=true&locale=en_EP&FT=D&date=20190402&CC=CN&NR=109552086A&KC=A


http://www.sz-sunway.com.cn/


Patent Family Count

DexPatent Abstract

Company

Innovation Involves


Innovation Involves

17

Innovation Involves

U S 2 0 1 9 0 1 0 5 9 9 5 1

Wireless charging

Wireless charging of EV include the EV

performing service discovery and negotiation

via a neighborhood aware network (NaN) to

determine charging compatibility of a WiFi

enabled charging station or another EV with

the EV.

✓ Neighborhood aware network

✓ Charging compatibility of WiFi

✓ WiFi enabled charging station

✓ Reservation request



https://www.gm.com/


Patent Family Count

DexPatent Abstract

University / research institute

Innovation Involves


Innovation Involves

18

Wireless charging system in an electric

automobile during traveling, including strip

conductor of the road pavement on runway

and the charging mechanism being installed

below the chassis of electric car

Innovation Involves

C N 1 0 9 6 0 6 1 4 7 0



✓ Conductive tracks on roadway

✓ Lifting mechanism

✓ Capacitive plates

Chongqing Vocational College of Public

Transportation

https://worldwide.espacenet.com/publicationDetails/biblio?CC=CN&NR=109606147A&KC=A&FT=D

https://worldwide.espacenet.com/publicationDetails/inpadocPatentFamily?CC=DE&NR=102017212451A1&KC=A1&FT=D&ND=3&date=20190124&DB=EPODOC&locale=en_EP

http://www.cqgyzy.com/


Patent Family Count

DexPatent Abstract


Innovation Involves


Innovation Involves

19

Smart phone activates EV charger using a

server computer system, a reservation

request is accepted from server, a

reservation certificate is authentic using the

access device to activate the electric vehicle

charger.

Innovation Involves

U S 2 0 1 9 0 1 0 8 6 9 8

✓ Server computer system

✓ Reservation request

✓ Reservation certificate

✓ Authentication

11

Smart phone app



https://www.libertyplugins.com/


Patent Family Count

DexPatent Abstract


Innovation Involves


Innovation Involves

20

Electric car wireless charging positioning

system based on two dimension dissymmetry

loop, the balance coil generates difference

current & detection device obtains the

difference current, respective offsets distance is

found out in difference current database and the

coil positioning under the precision is completed

Innovation Involves

C N 1 0 9 6 0 6 1 7 6 0

Positioning system


✓ Vehicle distance positioning



http://www.njnu.edu.cn/


Patent Family Count

DexPatent Abstract

Individual inventor

Innovation Involves


Innovation Involves

21

EV charging system in overhead arrangement,

power supply trolley is installed at the top of

charging robot with the current-collector and its

bottom is connected with auto-folder charging

mechanical arm which is connected with

charging plug adapted with the charging

interface at the top of electromobile.

Innovation Involves

C N 1 0 9 5 9 1 6 3 6 0

Charging robot

✓ Overhead charging system

✓ Robots for wireless charging

✓ Charging schedule management

✓ Information sharing system

Zhao Yongtao



Patent Family Count

DexPatent Abstract


Innovation Involves


Innovation Involves

22

EV charging in charging mode, inverter is

coupled to second DC power & first motor is run

at a speed in first direction, second motor with

negative torque to generate current; traction

system in traction mode, inverter is coupled to

rechargeable DC power and first & second

motors are run with nonzero torque in a same

torque direction.

Innovation Involves

U S 2 0 1 9 0 0 9 2 1 8 0

✓ Charging and traction control system

✓ Switching mechanism for coupling and

decoupling

✓ Speech control system

3

Charging control system




Patent Family Count

DexPatent Abstract

State owned enterprises

Innovation Involves


Innovation Involves

23

Innovation Involves

C N 1 0 9 5 5 2 0 8 3 0

Power grid system

EV charging system reduce the load impact

on the whole power grid system when the

large-scale electric vehicle is connected to

the charging pile during the peak of power

consumption by real-time load monitoring,

thereby ensuring the safety and stability of

the power grid operation.

✓ Power grid management system

✓ Real-time monitoring

✓ EV intelligent charging

✓ Battery Management System

✓ Controller area network interface



http://www.sgcc.com.cn/ywlm/index.shtml


Patent Family Count

DexPatent Abstract

Company

Innovation Involves


Innovation Involves

24

Innovation Involves

C N 1 0 9 5 9 1 6 3 8 0

Vehicle communication

A charging method for an electric vehicle by

request from a second electric vehicle that

controlling a battery of a first electric vehicle

when a charging needs to be charged then

the system is unlocking the battery of the first

electric vehicle to supply power to the second

electric vehicle.

✓ Information sharing

✓ Charging control system

✓ Vehicle to Vehicle charge

sharing


Beijing New Energy

Automobile Co., Ltd.




Patent Family Count

DexPatent Abstract

Company

Innovation Involves


Innovation Involves

25

Innovation Involves

U S 2 0 1 9 0 1 0 5 9 9 4 2


Wireless charging system includes first

cluster of charging pads connected with first

base station which is programmed to receive

information from EV and transmit the

information to a second base station in

communication with a second cluster of

charging pads for the continuous charging

✓ Wireless charging


✓ Continuous wireless charging

method



https://www.ford.com/


Patent Family Count

DexPatent Abstract

Individual inventor

Innovation Involves


Innovation Involves

26

Controlling method is monitoring the number of

charging vehicles, the power required to be

charged and verifying the total output power of

the nodes. After verification the result is shared

to the adjacent charging station and power

sharing is performed between the charging

stations.

Innovation Involves

C N 1 0 9 5 7 2 4 7 5 0

Power sharing

✓ Vehicle monitoring system

✓ Data sharing between charging

stations

✓ Charging control system

Yu Tao



Patent Family Count

DexPatent Abstract

Company

Innovation Involves


Innovation Involves

27

Innovation Involves

U S 2 0 1 8 0 1 4 7 9 5 0 4

Charging station control

A charging station control unit determines

whether the electric vehicles are coupled to

the respective charging ports and calculates

the charging time and departure time for

every coupled ports.

✓ Power grid management

system

✓ Charging time controlling

system

✓ Vehicle and Charging port

monitoring system



https://www.nissan-global.com/EN/index.html


Patent Family Count

DexPatent Abstract

Company

Innovation Involves


U S 2 0 1 9 0 0 3 9 4 6 2

Non-contact charging apparatus charging

plurality of EV using power receiving coil on

the vehicle, information acquisition part

acquires information whether to allow

charging on the vehicle, charging control

apparatus control a charging operation,

vehicle movement part move a vehicle that

has been charged from a place.

Charging plurality of vehicles

✓ Parking lot system

✓ Non-contact charging

✓ Information acquiring

✓ Power receiving coil

✓ Vehicle movement part

2


https://www.nec.com/



Patent Family Count

DexPatent Abstract

Company

Innovation Involves


U S 2 0 1 9 0 0 0 1 8 2 9

The energy storage unit of the vehicle is

charged inductively by use two coils are

oriented in relation to each other which

generates magnetic force.

✓ Inductive Charging System

✓ Magnetic force

✓ Coil unit

✓ Positioning unit

3

Energy storage unit



https://www.bmwgroup.com/en.html


Patent Family Count

DexPatent Abstract

Company

Innovation Involves


Charging post control system comprises

video monitoring device to analyse the

acquired image/video data of parking places

& send the data to a multifunctional charging

post which analyse the position of EV &

control the EV to be automatically parked

W O 2 0 1 7 1 6 1 7 4 7

✓ Charging post control system

✓ Image or video data analysis

✓ Automatic parking system

✓ Parking control device

Le mobile Information Technology

Parking control

2

https://worldwide.espacenet.com/publicationDetails/biblio?CC=WO&NR=2017161747A1&KC=A1&FT=D

https://worldwide.espacenet.com/publicationDetails/inpadocPatentFamily?CC=WO&NR=2017161747A1&KC=A1&FT=D&ND=&date=20170928&DB=&locale=


Patent Family Count

DexPatent Abstract


Innovation Involves


Innovation Involves

31

Electric Vehicle charging control system for

multiple batteries using single converter, the

charging system charges a plurality of batteries

up to a first preset voltage which is lower than a

full charge voltage and charges the plurality of

batteries up to a second preset voltage that is

the full charge voltage.

Innovation Involves

U S 2 0 1 7 0 3 0 5 2 9 1

✓ EV charging control


✓ Voltage and Current control

3

Charging control system

LSIS Company Limited




Patent Family Count

DexPatent Abstract


Innovation Involves


Innovation Involves

32

A method of pairing a charging station with

an electric vehicle using two intensity

signals, the first signal for wireless power

transmission and the second signal for

information content to identifies the charging

station among plurality of charging stations.

Innovation Involves

U S 9 5 0 5 3 1 4

✓ Charging station paring


✓ Power grid management

5

Pairing charging station

http://patft.uspto.gov/netacgi/nph-Parser?Sect1=PTO1&Sect2=HITOFF&p=1&u=/netahtml/PTO/srchnum.html&r=1&f=G&l=50&d=PALL&s1=9505314.PN.

https://worldwide.espacenet.com/publicationDetails/inpadocPatentFamily?CC=US&NR=9505314B2&KC=B2&FT=D&ND=&date=20161129&DB=&locale=

http://witricity.com/


Patent Family Count

DexPatent Abstract


Innovation Involves


Innovation Involves

33

Dynamic-adjusting wireless charging system

contains information collection unit for

collecting vehicle driving information, road

conditions and magnetic field information of

a charging coil, an execution unit for

charging

Innovation Involves

C N 1 0 6 7 4 0 1 6 7 2


✓ Dynamic-adjusting wireless

charging system

✓ Information acquisition unit

✓ Electronic control unit

✓ Two-stage scissors-type lifting

mechanism

Jiangsu University

https://worldwide.espacenet.com/publicationDetails/biblio?CC=CN&NR=106740167A&KC=A&FT=D&ND=3&date=20170531&DB=&locale=en_EP


http://www.ujs.edu.cn/


Patent Family Count

DexPatent Abstract


Innovation Involves


U S 1 0 2 7 0 2 6 5

An onboard charging system for EV is

communicate with a power supply through

exchange of control signals on a power supply

line. The power supply may convert AC into

DC & supplied directly to EV for charging

✓ Charge control system

✓ Energy storage device

✓ Charge controller

✓ Communication subsystem

✓ Power supply line

2

Charging system

http://patft.uspto.gov/netacgi/nph-Parser?Sect1=PTO1&Sect2=HITOFF&p=1&u=/netahtml/PTO/srchnum.html&r=1&f=G&l=50&d=PALL&s1=10270265.PN.

https://www.newflyer.com/

https://worldwide.espacenet.com/publicationDetails/inpadocPatentFamily?CC=US&NR=6654527B2&KC=B2&FT=D&ND=&date=20031125&DB=&locale=


Patent Family Count

DexPatent Abstract


Innovation Involves


C N 1 0 9 1 5 9 7 1 4

Plurality of solar panels installed on road for

supplying power to charging station. EV is

replaced by fully charged lithium battery &

unloaded battery of the EV is plugged to the

charging station to charge another EV.

✓ Road system

✓ Plurality of solar panels

✓ Energy storage device

✓ Power generation system

Sichuan Yaochengxin Technology

Charging solar panel

1

Legal Status

Invention patent application withdrawn after publication


https://worldwide.espacenet.com/publicationDetails/inpadocPatentFamily?CC=CN&NR=109159714A&KC=A&FT=D&ND=&date=20190108&DB=&locale=


Patent Family Count

DexPatent Abstract


Innovation Involves


C N 1 0 2 6 4 8 1 1 0

Wireless charging system for EV comprising a

power control device control all wireless

power transmission apparatus which is

connected with ground short-range wireless

communication module & mounted on ground

of parking area, wireless receiving panel is

mounted at EV for charging

✓ Wireless power transmission control

device

✓ Ground near field wireless communication

module

✓ Wireless transmitting panels

✓ Electronic payment

Amitelecom

3


Legal Status

Termination of patent right due to non-payment of annual fee

https://worldwide.espacenet.com/publicationDetails/biblio?CC=CN&NR=102648110B&KC=B&FT=D

https://worldwide.espacenet.com/publicationDetails/inpadocPatentFamily?CC=CN&NR=102648110B&KC=B&FT=D&ND=&date=20150624&DB=&locale=


Patent Family Count

DexPatent Abstract

Company

Innovation Involves


C N 1 0 7 0 8 9 1 6 6

If the low-voltage storage battery in EV is in

the undervoltage condition, acquiring AC from

a charging device & converting the AC to DC

required by the low-voltage storage battery

✓ On-vehicle low-voltage battery

✓ AC to DC conversion

✓ Auxiliary charging device

0

AC-DC conversion

Legal Status

Invention patent application withdrawn after publication


http://www.baicgroup.com.cn/


Patent Family Count

DexPatent Abstract

Individual inventor

Innovation Involves


C N 1 0 5 6 3 4 0 9 0

All-in-one integrated charging system comprises

a GPS locator to detect position of charging

system, LED lamp tube & LED drive equipment

for providing street lamp lighting for the

neighborhood and charging voltage change ratio

detection for determining whether the EV is

charged or not.

✓ Integrated charging system

✓ GPS locator

✓ LED

✓ Charge voltage change-rate calculation

device

Ren Rongyuan

0

Integrated charging systemRejection of invention patent

application after publication

Legal Status



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Charging in Electric Vehicles (EV) - DexPatent · One-way communication may be ... reservation certificate is authentic using the access device to activate the electric vehicle charger