Battery Cell interconnect and Voltage Sensing Assembly and Method for Coupling a Battery Cell Assembly Thereto

• US 20090325042A1
• Filed: 06/30/2008
• Published: 12/31/2009
• Est. Priority Date: 06/30/2008
• Status: Active Grant

• Current Assignee: LG Energy Solution Limited (LG Corporation)
• Original Assignee: LG Chem Limited (LG Corporation)
• Inventors: Yang, Heekook, Koetting, William, Robertson, David C., Tom, Kwok, Klein, Martin J.
• Granted Patent: US 8,163,412 B2
• Time in Patent Office: Days
• US Class Current: 429/90
• CPC Class Codes: H01M 10/0413 Large-sized flat cells or batteries for motive or stationary systems with plate-like electrodes
• CPC Class Codes: H01M 10/0525 Rocking-chair batteries, i.e. batteries with lithium insertion or intercalation in both electrodes; Lithium-ion batteries
• CPC Class Codes: H01M 10/0585 of accumulators having only flat construction elements, i.e. flat positive electrodes, flat negative electrodes and flat separators
• CPC Class Codes: H01M 10/425 Structural combination with electronic components, e.g. electronic circuits integrated to the outside of the casing printed circuits H05K1/00
• CPC Class Codes: H01M 10/482 for several batteries or cells simultaneously or sequentially
• CPC Class Codes: H01M 10/613 Cooling or keeping cold
• CPC Class Codes: H01M 10/647 Prismatic or flat cells, e.g. pouch 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 50/204 Racks, modules or packs for multiple batteries or multiple cells
• CPC Class Codes: H01M 50/284 with incorporated circuit boards, e.g. printed circuit boards [PCB]
• CPC Class Codes: H01M 50/516 by welding, soldering or brazing
• CPC Class Codes: H01M 50/522 Inorganic material
• CPC Class Codes: H01M 50/526 having a layered structure
• 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

Abstract

A battery cell interconnect and voltage sensing assembly and a method for coupling a battery cell assembly thereto are provided. The battery cell interconnect and voltage sensing assembly includes a frame member holding a plurality of electrical interconnect members and a circuit board with an electrical connector. The assembly routes an electrical current from battery cell assemblies through the electrical interconnect members and can allow a voltage at each of the electrical interconnect members to be sensed at the electrical connector.

Claims

1. A battery cell interconnect and voltage sensing assembly, comprising:

a frame member having a first and a second side, the frame member further having first, second, and third panel members, first and second end members, and first and second mounting members, the first, second, and third panel members being substantially parallel to one another and being spaced apart from one another, the second panel member being disposed between the first and third panel members, the first end member being coupled to a first end of the first, second, and third panel members, the second end member being coupled to a second end of the first, second, and third panel members, the first mounting member being coupled between the first and second panel members, the second mounting member being coupled between the second and third panel members;

a first electrical interconnect member coupled to the first mounting member between the first and second panel members;

a second electrical interconnect member coupled to the second mounting member between the second and third panel members;

the first electrical interconnect member being configured to contact a first electrical terminal of a first battery cell, the second electrical interconnect member being configured to contact a second electrical terminal of the first battery cell, the second electrical interconnect being further configured to contact a third electrical terminal of a second battery cell, such that the first and second electrical interconnect members electrically couple the first battery cell to the second battery cell;

a circuit board disposed on the first side of the frame member on the second panel member; and

an electrical connector disposed on the circuit board, the circuit board having a first electrical trace extending between the electrical connector and the first electrical interconnect member for sensing a voltage of the first electrical interconnect member.

2. The battery cell interconnect and voltage sensing assembly of claim 1, wherein the circuit board further has a second electrical trace extending between the electrical connector and the second electrical interconnect member for sensing a voltage of the second electrical interconnect member.

3. The battery cell interconnect and voltage sensing assembly of claim 1, wherein the first electrical interconnect member has a first rectangular plate, first and second side walls, and a first tab, the first rectangular plate being coupled to the first mounting member, the first rectangular plate having first, second, third, and fourth edges, the first and second side walls extending from the first and second edges, respectively, upwardly from the first rectangular plate, the first tab extending from the third edge and through a portion of the circuit board, the first tab being electrically coupled to the first electrical trace.

4. The battery cell interconnect and voltage sensing assembly of claim 1, wherein the frame member is constructed from plastic.

5. A method for coupling a battery cell to a battery cell interconnect and voltage sensing assembly, the battery cell interconnect and voltage sensing assembly having a frame member with first, second, and third panel members, first and second end members, and first and second mounting members, the first, second, and third panel members being substantially parallel to one another and being spaced apart from one another, the second panel member being disposed between the first and third panel members, the first end member being coupled to a first end of the first, second, and third panel members, the second end member being coupled to a second end of the first, second, and third panel members, the first mounting member being coupled between the first and second panel members, the second mounting member being coupled between the second and third panel members, the battery cell interconnect and voltage sensing assembly further having first and second electrical interconnect members disposed on the first and second mounting members, respectively, the method comprising:

disposing a first electrical terminal of the battery cell through a space between the first and second panel members such that the first electrical terminal is adjacent to the first electrical interconnect member;

disposing a second electrical terminal of the battery cell through a space between the second and third panel members such that the second electrical terminal is adjacent to the second electrical interconnect member;

ultrasonically welding the first electrical terminal to the first electrical interconnect member; and

ultrasonically welding the second electrical terminal to the second electrical interconnect member.