BATTERY TEMPERATURE ADJUSTING SYSTEM AND OPERATING METHOD THEREOF

• US 20130127420A1
• Filed: 01/14/2013
• Published: 05/23/2013
• Est. Priority Date: 07/14/2011
• Status: Active Grant

• Current Assignee: LG Energy Solution Limited (LG Corporation)
• Original Assignee: LG Chem Limited (LG Corporation)
• Inventors: CHO, Seung Su, CHOI, Seung Don, CHOI, Dae Sik, YOON, You Rim, JEONG, Chang Moon, KIM, Hong Sin
• Granted Patent: US 8,624,553 B2
• Time in Patent Office: Days
• US Class Current: 320/128
• CPC Class Codes: G05D 23/19 characterised by the use of electric means G05D23/1393 takes precedence
• CPC Class Codes: H01M 10/052 Li-accumulators
• CPC Class Codes: H01M 10/615 Heating or keeping warm
• CPC Class Codes: H01M 10/625 Vehicles
• CPC Class Codes: H01M 10/647 Prismatic or flat cells, e.g. pouch cells
• CPC Class Codes: H01M 10/6571 Resistive heaters arrangements for heating the battery by its resistance to the internal current H01M10/637
• CPC Class Codes: H01M 2220/20 Batteries in motive systems, e.g. vehicle, ship, plane
• CPC Class Codes: H02J 7/00 Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
• CPC Class Codes: H05B 1/0236 for vehicles
• CPC Class Codes: Y02E 60/10 Energy storage using batteries

Abstract

The present invention relates to a battery temperature adjusting system including: a battery unit having a heating pad; a leading wire connected to the battery unit; and a current induction unit surrounding the leading wire, wherein the current induction unit is electrically connected to the heating pad. The battery temperature adjusting system according to the present invention generates the induced current by applying the current induction unit surrounding the leading wire connected to the battery unit, and increases the temperature of the battery unit by supplying the induced current to the heating pad, thereby obtaining a desired battery output in a low-temperature region even without the use of an external power source.

Claims

1. A battery temperature adjusting system, comprising:

a battery unit including a heating pad;

a leading wire connected to the battery unit; and

a current induction unit surrounding the leading wire,

wherein the current induction unit is electrically connected to the heating pad.

2. The system of claim 1, wherein the battery temperature adjusting system comprises:

a motor unit;

a battery unit including a heating pad;

a leading wire connecting the motor unit and the battery unit; and

a current induction unit surrounding the leading wire,

wherein the current induction unit is electrically connected to the heating pad.

3. The system of claim 1, wherein the battery unit comprises a plurality of cells and a plurality of heating pads.

4. The system of claim 3, wherein the cell is a lithium secondary battery.

5. The system of claim 1, wherein the battery unit is used as at least one power source for a middle- or large-sized device from among an electrically driven vehicle including an electric vehicle (EV), a hybrid electric vehicle (HEV) and a plug-in hybrid electric vehicle (PHEV);

an electric truck;

an electric commercial vehicle; and

a power storage system.

6. The system of claim 1, wherein the heating pad comprises a heating wire.

7. The system of claim 1, wherein the current induction unit comprises a solenoid coil.

8. The system of claim 7, wherein the solenoid coil is made of metal or metal alloy having a conductivity of 5.80×

10⁶ mhos/m or more.

9. The system of claim 1, further comprising a control unit for controlling the temperature of the battery unit.

10. The system of claim 9, wherein the control unit is a solid state relay switch unit.

11. The system of claim 1, further comprising a device for increasing the temperature of the battery unit by using power of the battery itself.

12. The system of claim 1, further comprising a device for increasing the temperature of the battery unit by using an extra power source.

13. A method for operating a battery temperature adjusting system, the method comprising:

(a) charging and discharging a battery unit by generating a current in a leading wire connected to the battery unit, and generating a magnetic force around the leading wire;

(b) generating an induced current in a current induction unit surrounding the leading wire through the magnetic force generated in operation (a); and

(c) supplying the induced current generated in operation (b).

14. The method of claim 13, wherein the method comprises:

(a) charging and discharging the battery unit by generating an electric current in the leading wire connecting a motor unit and the battery unit having the heating pad, and generating a magnetic force around the leading wire;

(b) generating an induced current inside the current induction unit which surrounds the leading wire through the magnetic force generated in operation (a); and

(c) supplying the induced current generated in operation (b) to the heating pad.

15. The method of claim 13, further comprising cutting off the induced current supplied in operation (c) when the temperature of the battery unit is increased over a reference temperature.