Member for measurement of cell voltage and temperature in battery pack

• US 20060091891A1
• Filed: 11/01/2005
• Published: 05/04/2006
• Est. Priority Date: 11/02/2004
• Status: Active Grant

• Current Assignee: LG Energy Solution Limited (LG Corporation)
• Original Assignee: LG Chem Limited (LG Corporation)
• Inventors: Namgoong, John E., Ahn, Jaesung, Park, JongMin, Jung, Do Yang, Woo, Hyosang
• Granted Patent: US 7,479,786 B2
• Time in Patent Office: Days
• US Class Current: 324/430
• CPC Class Codes: B60L 2240/545 Temperature
• CPC Class Codes: B60L 2240/547 Voltage
• CPC Class Codes: B60L 2240/549 Current
• CPC Class Codes: B60L 50/64 Constructional details of batteries specially adapted for electric vehicles
• CPC Class Codes: B60L 58/21 having the same nominal voltage
• CPC Class Codes: G01R 1/04 Housings; Supporting members; Arrangements of terminals
• 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 10/0565 Polymeric materials, e.g. gel-type or solid-type
• CPC Class Codes: H01M 10/482 for several batteries or cells simultaneously or sequentially
• CPC Class Codes: H01M 10/486 for measuring temperature
• CPC Class Codes: H01M 50/505 comprising a single busbar
• CPC Class Codes: H01M 50/569 Constructional details of current conducting connections for detecting conditions inside cells or batteries, e.g. details of voltage sensing terminals battery terminal connectors with integrated measuring arrangements G01R31/364
• CPC Class Codes: Y02E 60/10 Energy storage using batteries
• CPC Class Codes: Y02T 10/70 Energy storage systems for electromobility, e.g. batteries

Abstract

A member for measurement of cell voltage and temperature in a battery pack comprises temperature measuring elements (a) attached to the surfaces of unit cells, and a printed circuit board (b) having protrusions formed at the upper end thereof such that the protrusions are connected to electrode lead connection members that connect electrode leads of the unit cells, connection parts formed at the lower part thereof for allowing the temperature measuring elements to be attached to the printed circuit board, and a circuit through which electric current for voltage measurement of the unit cells and electric current for temperature measurement of the temperature measuring elements flow.

Claims

1. A member for measurement of cell voltage and temperature in a battery pack, comprising:

temperature measuring elements (a) attached to the surfaces of unit cells; and

a printed circuit board (b) having protrusions formed at the upper end thereof such that the protrusions are connected to electrode lead connection members that connect electrode leads of the unit cells, connection parts formed at the lower part thereof for allowing the temperature measuring elements to be attached to the printed circuit board, and a circuit through which electric current for voltage measurement of the unit cells and electric current for temperature measurement of the temperature measuring elements flow.

2. The member as set forth in claim 1, wherein each of the temperature measuring elements is a thermistor, the resistance of which is changed according to the temperature.

3. The member as set forth in claim 1, wherein the protrusions are fixed to the electrode lead connection members by soldering.

4. The member as set forth in claim 1, wherein each of the connection part has through-holes, through which two connection feet of each of the temperature measuring elements are inserted, the connection feet of each of the temperature measuring elements being fixed to the printed circuit board by soldering while the connection feet of each of the temperature measuring elements are inserted in the through-holes.

5. The member as set forth in claim 1, wherein the printed circuit board is provided at one end thereof with a connector, which is connected a battery management system (BMS), at which a voltage measuring device and a temperature measuring device are mounted.

6. The member as set forth in claim 1, wherein the electrode lead connection members, to which the protrusions are connected, are bus bars.