Fuel cell component having a retrieval code

• US 7,754,358 B2
• Filed: 07/31/2002
• Issued: 07/13/2010
• Est. Priority Date: 08/01/2001
• Status: Expired due to Fees

• Current Assignee: Toyota Jidosha Kabushiki Kaisha (Toyota Motor Corporation)
• Original Assignee: Toyota Jidosha Kabushiki Kaisha (Toyota Motor Corporation)
• Inventors: Suzuki, Toshiyuki, Takahashi, Tsuyoshi, Asai, Yasuyuki, Wada, Mikio, Zeng, Yixin, Ochi, Tsutomu, Hibino, Kouetsu, Niimi, Haruhisa, Kajio, Katsuhiro, Yagami, Yuichi, Inagaki, Toshiyuki
• Primary Examiner(s): Ryan; Patrick
• Assistant Examiner(s): APICELLA, KARIE O
• Application Number:
  US10/485,471
• Publication Number:
  US 20040247951A1
• Time in Patent Office: 2,904 Days
• Field of Search: 429/12, 429/30
• US Class Current: 429/437
• CPC Class Codes: H01M 8/02 Details electrodes H01M4/86 - H01M4/98
• CPC Class Codes: H01M 8/0271 Sealing or supporting means around electrodes, matrices or membranes
• CPC Class Codes: H01M 8/2425 High-temperature cells with solid electrolytes
• CPC Class Codes: H01M 8/247 Arrangements for tightening a stack, for accommodation of a stack in a tank or for assembling different tanks
• CPC Class Codes: Y02E 60/50 Fuel cells

Abstract

A fuel cell (10) includes a lamination (11) of a plurality of unit cells (30), current collector plates (12, 12) arranged at both ends of the lamination (11), end plates 16, 16 respectively provided outside the current collector plates (12, 12) with 5 insulating plates (14, 14) interposed therebetween, and fastening members (18) for fastening the end plates (16, 16) in the laminating direction to apply desired pressing force to the lamination (11). A barcode (41) corresponding to particular information relating to a unit cell (30) is provided on the exposed side surface of a separator (38) of the unit cell (30). According to this fuel cell (10), the barcode 41 can be easily read requiring no disassembly of the fuel cell (10). Moreover, as the information relating to the fuel cell can be obtained from the barcode (41), the information that cannot be determined from outer appearance can be obtained, resulting in improved service operations.

Claims

1. A fuel cell assembly, comprising:

a plurality of unit cells, each of which is formed by interposing a solid electrolyte membrane between separators, which are laminated and fastened,

at least one sensor which measures an output voltage of a unit cell, and

a retrieval code containing particular information relating to a unit cell and being directly attached to and located on an exposed surface of at least one of the separators so as to be accessible from outside of the fuel cell, the particular information including accumulated measurement of the output voltage by the sensor and being updated with each measurement of the output voltage by the sensor

wherein the retrieval code comprises an integrated circuit chip.

2. A fuel cell assembly according to claim 1, wherein each retrieval code comprises at least one of an optically readable code, a magnetically readable code, an electrically readable code, and a mechanically readable code.

3. A fuel cell assembly according to claim 1, wherein the particular information is provided by a specific information indicator that is correlated to the particular information relating to the unit cell, the specific information indicator being provided with each of the separators so as to be accessible from outside of the fuel cell.

4. A fuel cell assembly according to claim 1, wherein the particular information is provided by a specific information identifying element that is correlated to the particular information relating to the unit cell, the specific information identifying element being provided with each of the separators so as to be accessible from outside of the fuel cell.

5. A fuel cell assembly according to claim 1, wherein the particular information contains at least one of output characteristics, charging/discharging characteristics, past usage record, manufacturing record, maintenance record, and chronological change in behavior.

6. A fuel cell assembly according to claim 1, wherein the particular information is information which effects unit cell output performance.

7. A fuel cell assembly according to claim 1, wherein the particular information is updated or added at prescribed intervals during normal operation.

12. A hybrid vehicle equipped with the fuel cell assembly according to claim 1.

13. The hybrid vehicle according to claim 12, further comprising:

a controller that reads the measured output voltage from each sensor and writes the measured output voltage to each corresponding retrieval code.

8. A fuel cell assembly, comprising:

a plurality of unit cells, each of which is formed by interposing a solid electrolyte membrane between separators, which are laminated and fastened; and

a retrieval code containing particular information relating to the fuel cell is directly attached to and located on an exposed surface of at least one of the separators so as to be accessible from outside of the fuel cell,

a retrieval code containing particular information relating to the fuel cell directly attached to and located on an exposed surface of at least one of the separators so as to be accessible from outside of the fuel cell,

wherein the retrieval code comprises an integrated circuit chip and an electrode, the integrated circuit chip is embedded in a portion of at least one of the separators and the electrode is provided on the exposed surface of the at least one of the separators, and

wherein the particular information is information which effects unit cell output performance.

9. A fuel cell assembly according to claim 8, wherein the particular information contains at least one of output characteristics, charging/discharging characteristics, past usage record, manufacturing record, maintenance record, and chronological change in behavior.

10. A hybrid vehicle equipped with the fuel cell assembly according to claim 8.

11. The hybrid vehicle according to claim 10, further comprising:

a controller that reads the measured output voltage from each sensor at prescribed intervals and writes the measured output voltage to each corresponding integrated circuit chip.