MOTOR DRIVE UNIT AND VEHICLE INCLUDING THE SAME

• US 20110116235A1
• Filed: 11/12/2010
• Published: 05/19/2011
• Est. Priority Date: 11/13/2009
• Status: Abandoned Application

• Current Assignee: LG Electronics, Inc. (LG Corporation)
• Original Assignee: LG Electronics, Inc. (LG Corporation)
• Inventors: Park, Jinsoo, Lee, Dongcheol, RYU, Seunghee, Kim, Jungbum, Lim, Junyoung, Lee, Dongwoo
• Application Number:
  US12/945,056
• Publication Number:
  US 20110116235A1
• Time in Patent Office: Days
• US Class Current: 361/699
• CPC Class Codes: B60L 2240/36 Temperature of vehicle components or parts
• CPC Class Codes: B60L 2240/525 Temperature of converter or components thereof
• CPC Class Codes: B60L 3/00 Electric devices on electrically-propelled vehicles for safety purposes; Monitoring operating variables, e.g. speed, deceleration or energy consumption methods or circuit arrangements for monitoring or controlling batteries or fuel cells B60L58/00
• CPC Class Codes: B60L 3/003 relating to inverters
• CPC Class Codes: B60L 50/51 characterised by AC-motors
• CPC Class Codes: B60L 50/66 Arrangements of batteries
• CPC Class Codes: B60L 58/10 for monitoring or controlling batteries
• CPC Class Codes: H02M 7/003 Constructional details, e.g. physical layout, assembly, wiring or busbar connections
• CPC Class Codes: H05K 7/209 Heat transfer by conduction from internal heat source to heat radiating structure H05K7/20909 takes precedence
• CPC Class Codes: H05K 7/20927 Liquid coolant without phase change
• CPC Class Codes: H05K 7/20936 Liquid coolant with phase change
• CPC Class Codes: Y02T 10/70 Energy storage systems for electromobility, e.g. batteries

Abstract

Disclosed is a motor drive unit. The motor drive unit includes a case, a capacitor provided in the case and generating heat, an inverter provided in the case and configured to convert Direct Current (DC) power into Alternating Current (AC) power, and a water cooling jacket provided in the case and configured to radiate heat generated by the inverter to the outside. The case includes a radiating plate to radiate the heat generated by the capacitor to the outside.

Claims

1. A motor drive unit comprising:

a case;

a capacitor provided in the case;

a radiating plate at the case to radiate heat generated by the capacitor to an outside of the case;

an inverter provided in the case to convert Direct Current (DC) power into Alternating Current (AC) power; and

a water cooling jacket provided at the case to radiate heat generated by the inverter to the outside of the case.

2. The motor drive unit according to claim 1, wherein the radiating plate includes a plurality of protruding radiating fins.

3. The motor drive unit according to claim 1, wherein the radiating plate is placed on an outer surface of an upper wall of the case.

4. The motor drive unit according to claim 1, wherein the capacitor comes into contact with an inner surface of an upper wall of the case.

5. The motor drive unit according to claim 1, wherein the water cooling jacket is disposed at a lower region of the case.

6. The motor drive unit according to claim 1, wherein the water cooling jacket radiates the heat to the outside of the case via heat exchange of cooling medium moving therein.

7. The motor drive unit according to claim 1, further comprising:

a plate provided at least at a portion of the capacitor to receive the heat generated by the capacitor; and

a heat pipe provided at a portion of the plate to transfer the heat from the plate.

8. A motor drive unit comprising:

a case;

a capacitor provided in the case;

a plate provided at least at a portion of the capacitor to receive heat generated by the capacitor;

a heat pipe provided at a portion of the plate to transfer the heat from the plate; and

a water cooling jacket provided at the case to radiate the heat transferred from the heat pipe to an outside of the case.

9. The motor drive unit according to claim 8, wherein the capacitor is disposed at an upper region of the case.

10. The motor drive unit according to claim 8, wherein the plate is provided at a lower surface of the capacitor.

11. The motor drive unit according to claim 8, further comprising an inverter to convert DC power into AC power and provided below the capacitor.

12. The motor drive unit according to claim 8, wherein the water cooling jacket is disposed at a lower region of the case.

13. The motor drive unit according to claim 8, wherein the water cooling jacket radiates the heat to the outside of the case via heat exchange of cooling medium moving therein.

14. The motor drive unit according to claim 8, further comprising an inverter to convert DC power into AC power and provided at an upper side of the water cooling jacket.

15. The motor drive unit according to claim 14, wherein the water cooling jacket radiates the heat generated from the inverter to the outside of the case.

16. The motor drive unit according to claim 8, wherein the heat pipe is provided between the plate and the water cooling jacket such that one side portion of the heat pipe comes into contact with the plate and an opposite side portion of the heat pipe comes into contact with the water cooling jacket.

17. A vehicle comprising:

a motor drive unit to convert DC power into AC power;

a motor that rotates upon receiving the AC power from the motor drive unit; and

wheels that are rotated by the motor,

wherein the motor drive unit includes;

a case;

a capacitor provided in the case;

a radiating plate at the case to radiate heat generated by the capacitor to an outside of the case;

an inverter provided in the case to convert DC power into AC power; and

a water cooling jacket provided at the case to radiate heat generated by the inverter to the outside of the case.

18. The vehicle according to claim 17, wherein the radiating plate includes a plurality of protruding radiating fins.

19. The vehicle according to claim 17, wherein the radiating plate is disposed on an outer surface of an upper wall of the case.

20. The vehicle according to claim 17, wherein the motor drive unit further includes:

a plate provided at least at a portion of the capacitor to receive the heat generated by the capacitor; and

a heat pipe provided at a portion of the plate to transfer the heat from the plate.