SECONDARY BATTERY CELL, BATTERY PACK, AND ELECTRICITY CONSUMPTION DEVICE

• US 20130234721A1
• Filed: 11/17/2011
• Published: 09/12/2013
• Est. Priority Date: 11/19/2010
• Status: Active Grant

• Current Assignee: Murata Manufacturing Co Limited
• Original Assignee: Murata Manufacturing Co Limited
• Inventors: Nakamura, Kazuo, Uesaka, Shinichi, Ozawa, Atsushi
• Granted Patent: US 9,766,294 B2
• Time in Patent Office: Days
• US Class Current: 324/434
• CPC Class Codes: G01R 31/371 with remote indication, e.g. on external chargers
• CPC Class Codes: G01R 31/382 Arrangements for monitoring battery or accumulator variables, e.g. SoC
• CPC Class Codes: H01M 10/0422 Cells or battery with cylindrical casing
• 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 10/48 Accumulators combined with arrangements for measuring, testing or indicating the condition of cells, e.g. the level or density of the electrolyte constructional details of current conducting connections for detecting conditions inside cells or batteries, e.g. details of voltage sensing terminals, H01M50/569
• CPC Class Codes: H01M 2010/4271 Battery management systems including electronic circuits, e.g. control of current or voltage to keep battery in healthy state, cell balancing
• CPC Class Codes: H01M 2010/4278 Systems for data transfer from batteries, e.g. transfer of battery parameters to a controller, data transferred between battery controller and main controller
• CPC Class Codes: H01M 50/103 prismatic or rectangular H01M50/109, H01M50/11 take precedence
• CPC Class Codes: H01M 50/107 having curved cross-section, e.g. round or elliptic H01M50/103, H01M50/109, H01M50/11 take precedence
• CPC Class Codes: H01M 50/213 adapted for cells having curved cross-section, e.g. round or elliptic H01M50/209, H01M50/216 take precedence
• 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: Y02P 70/50 Manufacturing or production processes characterised by the final manufactured product

Abstract

There are provided a secondary battery cell, a battery pack, and an electric power consumption device having a configuration and structure capable of accurately and easily detecting the state of the secondary battery cell in the battery pack.

A secondary battery cell 20 of the present invention includes an integrated circuit (an IC chip) 60 having a measuring function to measure a battery status, the battery pack has a plurality of secondary battery cells of the present invention, and the electric power consumption device includes the battery pack of the present invention having the plurality of secondary battery cells of the present invention.

Claims

1. A secondary battery cell comprising:

an integrated circuit having a measuring function to measure a battery status.

2. The secondary battery cell according to claim 1, wherein the integrated circuit has stored individual information.

3. The secondary battery cell according to claim 1 or 2, wherein the battery status measured by the integrated circuit is at least one of physical quantities selected from the group consisting of a battery temperature, a battery current, and a battery terminal voltage.

4. The secondary battery cell according to claim 2, wherein the integrated circuit operates by an electric power based on an electrical signal from outside the secondary battery cell and transmits the individual information and/or the measured battery status to the outside.

5. The secondary battery cell according to claim 4, wherein the integrated circuit receives the electrical signal from outside the secondary battery cell and obtains the electric power by rectifying the electrical signal.

6. The secondary battery cell according to claim 4, wherein the integrated circuit wirelessly transmits the individual information and/or the measured battery status to the outside of the secondary battery cell.

7. The secondary battery cell according to claim 4, wherein the integrated circuit transmits the individual information and/or the measured battery status to the outside of the secondary battery cell through wire transmission.

8. The secondary battery cell according to claim 7, wherein the integrated circuit is connected to an information input/output terminal provided in the secondary battery cell.

9. The secondary battery cell according to claim 7, wherein the integrated circuit is connected to an electric power line provided in the secondary battery cell to supply the electric power to the outside.

10. The secondary battery cell according to claim 9, wherein a bandpass filter is provided between the integrated circuit and the electric power line.

11. A battery pack comprising a plurality of secondary battery cells each including an integrated circuit having a measuring function to measure a battery status.

12. An electric power consumption device comprising a battery pack including a plurality of secondary battery cells each including an integrated circuit having a measuring function to measure a battery status.