Battery module of excellent heat dissipation property and heat exchange member

• US 9,385,404 B2
• Filed: 09/26/2013
• Issued: 07/05/2016
• Est. Priority Date: 11/09/2007
• Status: Active Grant

• Current Assignee: LG Energy Solution Limited (LG Corporation)
• Original Assignee: LG Chem Limited (LG Corporation)
• Inventors: Yoon, Hee Soo, Jinushi, Shinichi, Lee, Jin Kyu, Kang, Dal Moh, Yoon, Jongmoon
• Primary Examiner(s): Dye, Rena L
• Application Number:
  US14/038,316
• Publication Number:
  US 20140030561A1
• Time in Patent Office: 1,013 Days
• US Class Current: 1/1
• CPC Class Codes: B60L 1/003 to auxiliary motors, e.g. for pumps, compressors
• CPC Class Codes: B60L 2240/545 Temperature
• CPC Class Codes: B60L 3/0046 relating to electric energy storage systems, e.g. batteries or capacitors
• CPC Class Codes: B60L 50/64 Constructional details of batteries specially adapted for electric vehicles
• CPC Class Codes: B60L 58/18 of two or more battery modules
• CPC Class Codes: B60L 58/21 having the same nominal voltage
• CPC Class Codes: B60L 58/26 by cooling
• CPC Class Codes: H01M 10/052 Li-accumulators
• CPC Class Codes: H01M 10/30 Nickel accumulators H01M10/34 takes precedence
• CPC Class Codes: H01M 10/345 Gastight metal hydride accumulators
• CPC Class Codes: H01M 10/4207 for several batteries or cells simultaneously or sequentially
• CPC Class Codes: H01M 10/613 Cooling or keeping cold
• 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 10/651 characterised by parameters specified by a numeric value or mathematical formula, e.g. ratios, sizes or concentrations
• CPC Class Codes: H01M 10/6551 Surfaces specially adapted for heat dissipation or radiation, e.g. fins or coatings
• CPC Class Codes: H01M 10/6554 Rods or plates
• CPC Class Codes: H01M 10/6555 arranged between the cells
• CPC Class Codes: H01M 10/6556 Solid parts with flow channel passages or pipes for heat exchange closed pipes H01M10/6552
• CPC Class Codes: H01M 10/6567 Liquids
• CPC Class Codes: H01M 50/103 : prismatic or rectangular H01M50/109, H01M50/11 take precedence
• CPC Class Codes: H01M 50/119 : Metals
• CPC Class Codes: H01M 50/121 : Organic material
• CPC Class Codes: H01M 50/124 : having a layered structure
• CPC Class Codes: H01M 50/129 : with two or more layers of only organic material
• CPC Class Codes: H01M 50/211 : adapted for pouch cells
• CPC Class Codes: H01M 50/548 : on opposite sides of the cell
• CPC Class Codes: H01M 50/557 : Plate-shaped terminals
• CPC Class Codes: H01M 6/42 : Grouping of primary cells into batteries H01M6/40 takes precedence
• CPC Class Codes: Y02E 60/10 : Energy storage using batteries
• CPC Class Codes: Y02P 70/50 : Manufacturing or production processes characterised by the final manufactured product
• CPC Class Codes: Y02T 10/70 : Energy storage systems for electromobility, e.g. batteries

Abstract

Disclosed herein is a battery module including two or more plate-shaped battery cells sequentially stacked, wherein each of the plate-shaped battery cells is constructed in a structure in which an electrode assembly of a cathode/separator/anode structure is mounted in a battery case formed of a laminate sheet including a resin layer and a metal layer, and a heat exchange member, including a plurality of heat exchange plates and a frame to which the heat exchange plates are connected, is mounted at one side of a stack of the battery cells for removing heat generated from the battery cells during the charge and discharge of the battery cells.

Claims

1. A battery module including two or more plate-shaped battery cells sequentially stacked, wherein each of the plate-shaped battery cells is constructed in a structure in which an electrode assembly of a cathode/separator/anode structure is mounted in a battery case formed of a laminate sheet including a resin layer and a metal layer, and a heat exchange member, including a plurality of heat exchange plates and a frame to which the heat exchange plates are connected, is mounted at one side of a stack of the battery cells for removing heat generated from the battery cells during the charge and discharge of the battery cells,

wherein at least some of a sealing part formed at the battery case of each of the battery cells where no electrode terminals are formed extends such that the at least some of the sealing part is longer than the remaining sealing part, and the heat exchange member is located on the extending sealing part,

wherein the heat exchange plates are in face-to-face contact for thermal conduction with the respective extending sealing parts, and

wherein the frame of the heat exchange member is provided with slits through which the extending sealing parts of the respective battery cells are inserted.

2. The battery module according to claim 1, wherein the laminate sheet includes an inner resin layer, which is thermally weldable, an isolation metal layer, and an outer resin layer.

3. The battery module according to claim 1, wherein the heat exchange plates are at least partially interposed respectively between the stacked battery cells.

4. The battery module according to claim 1, wherein each of the heat exchange plates has a width equivalent to 50 to 100% of a width of each of the battery cells.

5. The battery module according to claim 1, wherein the frame is provided with one or more heat exchange medium channels through which a heat exchange medium flows.

6. The battery module according to claim 1, wherein the extending sealing parts of the respective battery cells are inserted through the corresponding slits of the heat exchange member, and the heat exchange plates of the heat exchange member are interposed between the respective battery cells.

7. The battery module according to claim 1, wherein the extending sealing parts of the respective battery cells are inserted through the corresponding slits of the heat exchange member, and the heat exchange plates of the heat exchange member are located in an outward direction to the battery cell stack.

8. The battery module according to claim 1, wherein the heat exchange member is made of a metal material or a carbon material.

9. A battery pack manufactured by combining battery modules according to claim 1 based on a desired power and capacity, wherein the battery pack is used as a power source for electric vehicles or hybrid electric vehicles.

10. A heat exchange member for heat dissipation of a battery module including a plurality of plate-shaped battery cells, comprising:

(a) two or more heat exchange plates for face-to-face contact for thermal conduction; and

(b) a frame to which one side of each of the heat exchange plates is connected, the frame having slits through which sealing parts of the respective battery cells are inserted, the slits being located between the respective heat exchange plate connection regions, the frame having one or more heat exchange medium channels through which a heat exchange medium flows.