Here is a rough google-translation of most of the nicely painted text
Serious incident investigation aviation
• All Nippon Airways Co., Ltd. plant genus (Flight 692)
• The expression of type type Boeing 787-8 formula
• JA804A registration symbol
• January 16, 2013 date and time of occurrence at around 08:26 (Wed)
• FL 320 near Airport Takamatsu
February 5, 2013
1. Overview of the main battery
• the machine is equipped with two battery
● Main Battery
● APU Battery (APU: Auxiliary Power Unit)
• battery lithium ion both the same
• eight cells connected in series
• The performance is as follows:
Lithium-ion battery
· Nominal voltage: DC 29.6V (3.7V × 8 cell)
Nominal capacity and nominal capacity of: (at An'a) 75Ah
• Weight: 28.5kg
· Size: 215H × 280W × 335L (mm)
(According to the manufacturer's documentation)
2. Location of the battery
3. Survey Battery
■ APU battery and the main battery
· Japan Aerospace Exploration Agency (JAXA, Mitaka), carried out the
CT scan
· The main battery manufacturer in Kyoto performed scan
CT for each cell, the decomposition study
■ Battery Battery Monitoring Unit (BMU)
-Manufacturer in (Fujisawa), conducted a survey
■ Battery Charger
-Manufacturer in USA, conducted a survey
■ contactor and battery diode module (BDM)
-Manufacturer in France, will study
4. CT scan image
CT scans into 3D images taken with the APU battery JAXA
5. Degradation of the battery in the manufacturer's
6. Appearance of the cell (main battery)
7. Appearance of each cell (main battery)
8. CT scan image of each cell
9. The status of the battery cell (Summary)
■ damage seen in all eight cells.
cell 3 and cell 6 damage is particularly large
■ thermal damage can be seen in all cells
■ can be seen before thermal runaway
■ The positive electrode of the cell 3 large damage
and large damage cells 8 and 1
Damage is great for other cells 7, 8, 2
■ Except for cell 4 and cell 5
Cell 6 Six positive electrode of the cell
Observed in the internal fusing
10. Other
Ground wire of the battery casing is cut
Summary
■ Need study in more detail the circumstances of the cord, a battery-cell damage further investigate the situation further damage battery
Research and degradation
■ Need to continue to find the cause of the damage
analysis and data recording device, such as flight, Battery charger etc.
■ Need to continue the investigation of the disconnection of the grounding wire enclosure, timing and causes.
If somebody can do it better or an english version is available feel free to ammend.