Diagnosis system and diagnosis method for lithium ion secondary battery

• US 9,147,913 B2
• Filed: 11/08/2010
• Issued: 09/29/2015
• Est. Priority Date: 11/09/2009
• Status: Expired due to Fees

• Current Assignee: Hitachi, Ltd.
• Original Assignee: Hitachi, Ltd.
• Inventors: Miwa, Toshiharu, Ishikawa, Seiji, Matsumoto, Chizu
• Primary Examiner(s): Bui, Bryan
• Application Number:
  US13/508,750
• Publication Number:
  US 20120259569A1
• Time in Patent Office: 1,786 Days
• Field of Search: 702/63
• US Class Current: 1/1
• CPC Class Codes: G01R 31/3865 related to manufacture, e.g. testing after manufacture
• 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 10/058 Construction or manufacture
• CPC Class Codes: H01M 10/4207 for several batteries or cells simultaneously or sequentially
• CPC Class Codes: H01M 10/4221 with battery type recognition
• CPC Class Codes: H01M 10/4285 Testing apparatus
• CPC Class Codes: H01M 10/441 for several batteries or cells simultaneously or sequentially
• CPC Class Codes: H01M 10/482 for several batteries or cells simultaneously or sequentially
• 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

Manufacturing management information relating to a module battery and single battery mounted therein which are obtained in a battery manufacturing process (1) is collected by a manufacturing quality information collection processing unit (4) and stored in a database (6). In a battery diagnosis system (3), when the module battery (2) under a usage environment is charged, an operation result processing unit (5) collects operation result information relating to the module (2) and stores the operation result information in a database (7). An operation result monitoring processing unit (8) determines whether the operation result information is abnormal, and supplies the result of the determination to a manufacturing/usage environment factor classification processing unit (9). When the result of the determination indicates that the operation result information is abnormal, the manufacturing/usage environment factor classification processing unit (9) diagnoses, on the basis of the manufacturing management information relating to the module battery in the database (6), whether the abnormality of the operation result information is caused by a manufacturing factor or a usage environment factor, and the result of the diagnosis is created and displayed by the diagnosis result creation processing unit (10).

Claims

1. A diagnosis system for a lithium ion secondary battery comprising:

a manufacturing quality information collection processing unit which collects manufacturing quality information from manufacturing processes of a single battery and module battery using the single battery of a lithium ion secondary battery;

a manufacturing quality management database which stores the manufacturing quality information collected by the manufacturing quality information collection processing unit;

an operation result information collection processing unit which collects operation result information from the module battery in operation under a usage environment;

an operation result database which stores the operation result information collected by the operation result information collection processing unit;

an operation result monitoring processing unit which monitors an operation condition of the module battery by using the operation result information;

a manufacturing/usage environment factor classification processing unit which determines, based on the manufacturing quality information in the manufacturing quality management database and the operation result information in the operation result database, whether an abnormality factor of an operation result detected by the operation result monitoring processing unit is caused by a usage environment factor or a manufacturing factor; and

a diagnosis result creation processing unit which creates a diagnosis result of the module battery to be diagnosed based on a processing result of the operation result monitoring processing unit and a processing result of the manufacturing/usage environment factor classification processing unit.

2. The diagnosis system for a lithium ion secondary battery according to claim 1, wherein:

the operation result information collection processing unit collects the operation result information of the module battery after a charging completion of the module battery; and

when the operation result monitoring processing unit detects, based on the operation result information collected by the operation result information collection processing unit, that abnormality of operation results is present, the manufacturing/usage environment factor classification processing unit determines whether an abnormality factor of the operation result is caused by the usage environment factor or the manufacturing factor.

3. The diagnosis system for a lithium ion secondary battery according to claim 2, wherein:

the manufacturing quality information collection processing unit and the manufacturing quality management database are provided in a battery manufacturing management system having a manufacturing process for manufacturing the module;

the operation result information collection processing unit is provided in a charging system which charges the module battery, and the operation result database, the operation result monitoring processing unit, the manufacturing/usage environment factor classification processing unit, and the diagnosis result creation processing unit configure a battery diagnosis system; and

the battery manufacturing management system, the charging system, and the battery diagnosis system are connected via a network.

4. The diagnosis system for a lithium ion secondary battery according to claim 2, wherein:

the manufacturing quality information collection processing unit and the manufacturing quality management database are provided in a battery manufacturing management system having a manufacturing process for manufacturing the module;

the operation result database is provided in a battery operation result management system;

the operation result information collection processing unit, the operation result monitoring processing unit, the manufacturing/usage environment factor classification processing unit, and the diagnosis result creation processing unit are provided in a charging system which charges the module battery; and

the battery manufacturing management system, the battery operation result management system, and the charging system are connected via a network.

5. The diagnosis system for a lithium ion secondary battery according to claim 1, wherein:

the manufacturing quality information collection processing unit and the manufacturing quality management database are provided in a battery manufacturing management system having a manufacturing process for manufacturing the module;

the operation result information collection processing unit is provided in a charging system which charges the module battery, and the operation result database, the operation result monitoring processing unit, the manufacturing/usage environment factor classification processing unit, and the diagnosis result creation processing unit configure a battery diagnosis system; and

the battery manufacturing management system, the charging system, and the battery diagnosis system are connected via a network.

6. The diagnosis system for a lithium ion secondary battery according to claim 1, wherein:

the manufacturing quality information collection processing unit and the manufacturing quality management database are provided in a battery manufacturing management system having a manufacturing process for manufacturing the module;

the operation result database is provided in a battery operation result management system; and

the operation result information collection processing unit, the operation result monitoring processing unit, the manufacturing/usage environment factor classification processing unit, and the diagnosis result creation processing unit are provided in a charging system which charges the module battery; and

the battery manufacturing management system, the battery operation result management system, and the charging system are connected via a network.

7. A diagnosis method for a lithium ion secondary battery comprising:

a first step of collecting operation result information of a module battery of a lithium ion secondary battery in operation by using an operation result information collection unit;

a second step of determining, based on an operation result monitoring unit, whether abnormality is present in the operation result information of the acquired module battery;

a third step of acquiring manufacturing quality information of the module battery in which the abnormality is present in the operation result information and the manufacturing quality information of single batteries thereof by using a manufacturing/usage environment factor classification unit and determining, based on comparison processing of product inspection information of the manufacturing quality information, whether a significant difference of a manufacturing factor is present; and

a fourth step of creating a diagnosis result of the module battery based on processing results of the operation result monitoring unit and the manufacturing/usage environment factor classification unit, and

wherein a series of processing including the first to fourth steps is performed.