BATTERY STATE NOTIFYING UNIT, BUS BAR MODULE, BATTERY PACK, AND BATTERY STATE MONITORING SYSTEM

• US 20120323511A1
• Filed: 06/06/2012
• Published: 12/20/2012
• Est. Priority Date: 06/14/2011
• Status: Active Grant

• Current Assignee: Yazaki Corporation
• Original Assignee: Yazaki Corporation
• Inventors: Kanazawa, Akiyoshi, Saigo, Tsutomu
• Granted Patent: US 9,461,342 B2
• Time in Patent Office: Days
• US Class Current: 702/63
• CPC Class Codes: G01R 31/364 Battery terminal connectors with integrated measuring arrangements
• CPC Class Codes: G01R 31/371 with remote indication, e.g. on external chargers
• CPC Class Codes: G01R 31/396 Acquisition or processing of data for testing or for monitoring individual cells or groups of cells within a battery
• CPC Class Codes: G06F 17/00 Digital computing or data processing equipment or methods, specially adapted for specific functions information retrieval, database structures or file system structures therefor G06F16/00
• 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 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 2220/20 Batteries in motive systems, e.g. vehicle, ship, plane
• CPC Class Codes: H01M 50/507 comprising an arrangement of two or more busbars within a container structure, e.g. busbar modules
• CPC Class Codes: H02J 7/0013 acting upon several batteries simultaneously or sequentially H02J7/1423 takes precedence
• CPC Class Codes: H02J 7/0047 with monitoring or indicating devices or circuits
• 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

[Problem to be Solved]

To provide a battery state notifying unit, a bus bar module, a battery pack and a battery state monitoring system allowing the number of electric wires guided to a unit monitoring a battery state to reduce, and signal voltage applied to the electric wires to lower.

[Solution]

A battery power source system 1 is provided with a battery state notifying unit 40 corresponding to each the battery pack 10, wherein the battery state notifying unit 40 generating battery state information of digital signal including information indicating electrode voltage and temperature of the battery cells 21, and transmitting the battery state to the battery state monitoring unit 60, the information being based on cell voltage signal corresponding to electrode voltage outputted from terminal fittings 33 of the battery pack 10, and cell temperature signal corresponding to voltage outputted from temperature sensor 34.

Claims

1. A battery state monitoring system comprising:

(a) at least a battery pack having a plurality of battery cells, and a plurality of battery state output devices, each battery state output device outputting an analog signal data corresponding to a state of each of the plurality of the battery cells, each of the at least a battery pack having a battery state notifying unit including

(i) an information generator generating a digital signal battery state data including information indicating the state of each of the plurality of battery cells in response to the analog signal data outputted via the battery state output device, and

(ii) an information transmitter; and

(b) a battery state monitoring unit monitoring the state of each of the plurality of the battery cells,

wherein the information transmitter transmits the digital signal battery state data generated by the information generator to the battery state monitoring unit.

2. The battery state monitoring system as claimed in claim 1, wherein the information transmitter is configured to transmit the digital signal battery state data to the battery state monitoring unit by serial communication.

3. The battery state monitoring system as claimed in claim 1 further comprising;

a common signal line brought into connection with the battery state monitoring unit, and the battery sate notifying unit disposed in the at least a battery pack, wherein communication protocol of the information transmitter is multiplex communication protocol via the common signal line.

4. The battery state monitoring system as claimed in claim 2 further comprising;

a common signal line brought into connection with the battery state monitoring unit, and the battery sate notifying unit disposed in the at least a battery pack, wherein communication protocol of the information transmitter is multiplex communication protocol via the common signal line.

5. The battery state monitoring system as claimed in claim 1, wherein the at least a battery pack is provided with a bus bar module having a plurality of bas bars connecting electrodes of the plurality of battery cells to each other, and the battery state notifying unit is disposed in the bas bar module.

6. The battery state monitoring system as claimed in claim 2, wherein the at least a battery pack is provided with a bus bar module having a plurality of bas bars connecting electrodes of the plurality of battery cells to each other, and the battery state notifying unit is disposed in the bas bar module.

7. The battery state monitoring system as claimed in claim 3, wherein the at least a battery pack is provided with a bus bar module having a plurality of bas bars connecting electrodes of the plurality of battery cells to each other, and the battery state notifying unit is disposed in the bas bar module.

8. The battery state monitoring system as claimed in claim 4, wherein the at least a battery pack is provided with a bus bar module having a plurality of bas bars connecting electrodes of the plurality of battery cells to each other, and the battery state notifying unit is disposed in the bas bar module.

9. The battery state monitoring system as claimed in claim 1, wherein the battery state monitoring unit is attached to the at least a battery pack.

10. The battery state monitoring system as claimed in claim 2, wherein the battery state monitoring unit is attached to the at least a battery pack.

11. The battery state monitoring system as claimed in claim 3, wherein the battery state monitoring unit is attached to the at least a battery pack.

12. The battery state monitoring system as claimed in claim 4, wherein the battery state monitoring unit is attached to the at least a battery pack.

13. The battery state monitoring system as claimed in claim 5, wherein the battery state monitoring unit is attached to the at least a battery pack.

14. The battery state monitoring system as claimed in claim 6, wherein the battery state monitoring unit is attached to the at least a battery pack.

15. The battery state monitoring system as claimed in claim 7, wherein the battery state monitoring unit is attached to the at least a battery pack.

16. The battery state monitoring system as claimed in claim 8, wherein the battery state monitoring unit is attached to the at least a battery pack.

17. A battery state notifying unit disposed in a battery pack having a plurality of battery cells, and a plurality of battery state output devices, each of the plurality of battery state output devices outputting an analog signal data corresponding to a state of each of the plurality of battery cells, comprising:

an information generator generating a digital signal battery state data including information indicating the state of each of the plurality of battery cells corresponding to the analog signal data outputted via each of the plurality of battery state output devices; and

an information transmitter transmitting the digital signal battery state data generated by the information generator to outside the battery pack.

18. A bas bar module disposed in a battery pack having a plurality of battery cells, comprising:

a plurality of bas bars connecting electrodes of the plurality of battery cells to each other;

a plurality of battery state output devices, each battery state output device outputting an analog signal data corresponding to a state of each of the plurality of battery cells; and

the battery state notifying unit as claimed in claim 17.

19. A battery pack comprising:

a plurality of battery cells;

a plurality of battery state output devices, each battery state output device outputting an analog signal data corresponding to a state of each of the plurality of battery cells; and

the battery state notifying unit as claimed in claim 17.