# US 9,751,413 B2 · Electric vehicle charging apparatus for controlling heat during charging

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- Number: US 9,751,413 B2
- Document ID: US9751413B2
- Status: Granted
- Kind: B2
- Application number: 14/788,280
- Filed: 2015-06-30
- Published: 2016-03-17
- Granted: 2017-09-05
- Earliest claimed: 2014-09-15
- Assignees: Lsis Co., Ltd.
- Applicants: Lsis Co., Ltd.
- Inventors: Chang Jun Im
- Web page: https://patentgrep.com/patent/US9751413B2

## CPC

- B60L 53/14: Conductive energy transfer
- B60L 53/16: Connectors, e.g. plugs or sockets, specially adapted for charging electric vehicles
- B60L 53/18: Cables specially adapted for charging electric vehicles
- H01R 13/7137: {with thermal interrupter (H01R13/7132 takes precedence)}
- H01R 13/6683: {with built-in sensor}
- H01R 2201/26: for vehicles
- 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
- H01R: ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
- Y02T: CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION

## Abstract

A charging apparatus is provided. The charging apparatus includes a plug supplying electrical energy to an electric vehicle (EV) through a plurality of plug pins; a plurality of temperature sensors disposed in the plug and measuring the temperatures of the plurality of plug pins; and a control unit determining the presence or absence of the overheating of the plug based on the temperatures measured from the plurality of temperature sensors.

## Claims

### Claim 1

A charging apparatus comprising:
a plug supplying electrical energy to an electric vehicle (EV) through a plurality of plug pins;
a plurality of temperature sensors located in the plug and measuring temperatures of the plurality of plug pins; and
a control unit determining whether the plug overheats based on the measured temperatures,
wherein the plug comprises a magnetic sensor measuring a magnetic field, and
wherein the control unit determines a charging mode based on the magnetic field measured by the magnetic sensor.

### Claim 2 (depends on 1)

The charging apparatus according to claim 1, wherein the plurality of temperature sensors are located vertically between the plug pins at specific intervals from the plug pins.

### Claim 3 (depends on 1)

The charging apparatus according to claim 1, wherein the plurality of temperature sensors are located between the plug pins at specific intervals from the plug pins such that the plurality of temperature sensors have bilateral symmetry.

### Claim 4 (depends on 1)

The charging apparatus according to claim 1, wherein the plug further comprises a plurality of resistors each connected to one end of the magnetic sensor.

### Claim 5 (depends on 1)

The charging apparatus according to claim 1, wherein the plug further comprises resistors connected to one end of each of the plurality of temperature sensors.

### Claim 6 (depends on 5)

The charging apparatus according to claim 5, wherein the resistors each have a different resistance.

### Claim 7 (depends on 6)

The charging apparatus according to claim 6, wherein the control unit further determines a short between circuits by using the resistors.

### Claim 8 (depends on 1)

The charging apparatus according to claim 1, wherein the control unit further determines that the plug overheats when the measured temperatures are equal to or higher than a specific level.

### Claim 9 (depends on 8)

The charging apparatus according to claim 8, wherein the control unit further decreases an amount of charging or stops charging when it is determined that the plug overheats.

### Claim 10 (depends on 9)

The charging apparatus according to claim 9, wherein the control unit further decreases the amount of charging before stopping charging.