Battery information processing apparatus, battery manufacturing support apparatus, battery assembly, battery information processing method, and method of manufacturing battery assembly

Patent metadata

Field	Value
Publication number	US-10921382-B2
Application number	US-201816225940-A
Country	US
Kind code	B2
Filing date	Dec 19, 2018
Priority date	Dec 25, 2017
Publication date	Feb 16, 2021
Grant date	Feb 16, 2021

Abstract

A management server obtains information on a use history of a battery assembly used in a vehicle. The management server calculates an amount of material deterioration Dm and an amount of high-rate deterioration Dh by using the information on the use history of the battery assembly. When a ratio Dm/Dh is higher than a threshold value Th, the management server generates first assembly information indicating selection of a cell highly resistant against material deterioration and a spacer highly resistant against material deterioration (a cell A and a spacer A). When the ratio Dm/Dh is lower than the threshold value Th, the management server generates second assembly information indicating selection of a cell highly resistant against high-rate deterioration and a spacer highly resistant against high-rate deterioration (a cell B and a spacer B).

First claim

What is claimed is:

1. A battery information processing apparatus which processes information for manufacturing a battery assembly constructed by alternately stacking a plurality of cells and a plurality of spacers, the battery information processing apparatus comprising:
a battery information obtaining device configured to obtain information on a use history of the battery assembly used in a vehicle; and
an assembly information generator configured to generate assembly information for selecting a cell and a spacer to be used for manufacturing the battery assembly,
the assembly information generator being configured to generate any one of first assembly information and second assembly information by using the information on the use history,
the first assembly information indicating selection of a cell and a spacer determined as being higher in resistance against deterioration of a material for the cell than resistance against high-rate deterioration of the cell based on a prescribed indicator, and
the second assembly information indicating selection of a cell and a spacer determined as being higher in resistance against high-rate deterioration of the cell than resistance against deterioration of the material for the cell based on the indicator.

2. The battery information processing apparatus according to claim 1 , the battery information processing apparatus further comprising:
a material deterioration amount calculator configured to calculate an amount of material deterioration by using the information on the use history; and
a high-rate deterioration amount calculator configured to calculate an amount of high-rate deterioration by using the information on the use history, wherein
the amount of material deterioration is an amount of increase in resistance of the cell due to deterioration of the material for the cell under influence by heat,
the amount of high-rate deterioration is an amount of increase in resistance of the cell due to high-rate deterioration of the cell, and
when a ratio of the amount of material deterioration to the amount of high-rate deterioration is higher than a threshold value, the assembly information generator is configured to generate the first assembly information, and when the ratio is lower than the threshold value, the assembly information generator is configured to generate the second assembly information.

3. The battery information processing apparatus according to claim 1 , wherein
the information on the use history includes at least one of an environment of use of the battery assembly, a condition for traveling of the vehicle, a time period of traveling of the vehicle, and a frequency of traveling of the vehicle, and
when the information on the use history satisfies a prescribed condition, the assembly information generator is configured to generate the first assembly information, and when the information on the use history does not satisfy the prescribed condition, the assembly information generator is configured to generate the second assembly information.

4. The battery information processing apparatus according to claim 3 , wherein
at least one of a condition that a temperature of use representing the environment of use is higher than a prescribed value, a condition that a load in traveling representing the condition for traveling is lower than a prescribed value, a condition that a time period of traveling per one day representing the time period of traveling is shorter than a prescribed value, and a condition that a frequency representing the frequency of traveling is lower than a prescribed value is defined as the prescribed condition that is necessary.

5. The battery information processing apparatus according to claim 1 , wherein
the indicator includes a weight per unit area of a negative electrode of the cell and a BET specific surface area of the negative electrode of the cell, and
a cell of which weight per unit area of the negative electrode is smaller than a prescribed value and of which BET specific surface area of the negative electrode is smaller than a prescribed value is determined as being higher in resistance against deterioration of the material than resistance against the high-rate deterioration.

6. The battery information processing apparatus according to claim 1 , wherein
the spacer used for manufacturing the battery assembly includes a plate-shaped main body and a protrusion which protrudes from the main body toward the cell,
the indicator includes an area of contact between the protrusion and the cell, and
a spacer of which area of contact is greater than a prescribed value is determined as being higher in resistance against deterioration of the material than resistance against the high-rate deterioration.

7. A battery manufacturing support apparatus for manufacturing a battery assembly by replacing a cell and a spacer which constitute the battery assembly, the battery manufacturing support apparatus comprising:
an obtaining device configured to obtain assembly information generated by the battery information processing apparatus according to claim 1 ; and
a selector configured to select a cell and a spacer to be used for manufacturing the battery assembly in accordance with the assembly information obtained by the obtaining device.

8. A battery assembly manufactured in accordance with assembly information generated by the battery information processing apparatus according to claim 1 .

9. A battery information processing method of processing information for manufacturing a battery assembly constructed by alternately stacking a plurality of cells and a plurality of spacers, the battery information processing method comprising:
obtaining information on a use history of the battery assembly used in a vehicle; and
generating assembly information, by a server, for selecting a cell and a spacer to be used for manufacturing the battery assembly,
the generating assembly information including generating any one of first assembly information and second assembly information by using the information on the use history,
the first assembly information indicating selection of a cell and a spacer determined as being higher in resistance against deterioration of a material for the cell than resistance against high-rate deterioration of the cell based on a prescribed indicator, and
the second assembly information indicating selection of a cell and a spacer determined as being higher in resistance against high-rate deterioration of the cell than resistance against deterioration of the material for the cell based on the indicator.

10. A method of manufacturing a battery assembly constructed by alternately stacking a plurality of cells and a plurality of spacers, the method comprising:
obtaining assembly information for selecting a cell and a spacer to be used for manufacturing the battery assembly; and
manufacturing the battery assembly by using the cell and the spacer selected in accordance with the obtained assembly information,
the assembly information being any one of first assembly information and second assembly information generated by using information on a use history of the battery assembly used in a vehicle,
the first assembly information indicating selection of a cell and a spacer determined as being higher in resistance against deterioration of a material for the cell than resistance against high-rate deterioration of the cell based on a prescribed indicator, and
the second assembly information indicating selection of a cell and a spacer determined as being higher in resistance against high-rate deterioration of the cell than resistance against deterioration of the material for the cell based on the indicator.

Assignees

• Toyota Motor Co Ltd

Inventors

• Komiyama Keita

Classifications

• H01M10/482

  for several batteries or cells simultaneously or sequentially · CPC title

• H01M10/54

  Reclaiming serviceable parts of waste accumulators · CPC title

• H01M2010/4271

  Battery management systems including electronic circuits, e.g. control of current or voltage to keep battery in healthy state, cell balancing · CPC title

• Y02E60/10

  Energy storage using batteries · CPC title

• G01R31/392 Primary

  Determining battery ageing or deterioration, e.g. state of health · CPC title