发表于 2013/5/27 15:36:23 阅读（40568）
Mitsubishi reports fire in i-MiEV battery pack, melting in Outlander PHEV pack
Mitsubishi Motors reported two separate incidents with Li-ion battery packs: one, a fire in a i-MiEV battery pack at the Mizushima battery pack assembly plant; the other, heating and melting in a pack installed in an Outlander plug-in hybrid electric vehicle.
In the Mizushima event, the pack was connected to charge-discharge test equipment. There was no injury to personnel, or damage to the main plant building and equipment.
Mitsubishi noted that the supplier, GS Yuasa, had made a change in its manufacturing process, and that since there is a possibility of failures that may occur in this context, it is investigating in collaboration with GS Yuasa. Mitsubishi has shipped 45 units (for specified corporations) and 68 units of that type of pack for the domestic market as spare parts.
The incident with the Outlander PHEV occurred after the vehicle had been fully charged and stood for one day. Upon trying to move the vehicle, the driver detected an odor, which was traced to melting of part of the battery pack.
The melting was traced to the overheating of some of the battery cells—also supplied by GS Yuasa.
官方通告：Mitsubishi Motors Reports Instance of a Battery Pack Fire at its Mizushima Plant, Investigation
Mitsubishi asks customers not to charge Outlander
Li-ion Batteries from GS Yuasa Involved in Two Overheating Incidents in Mitsubishi EVs
Lithium-Ion Batteries Overheated in Mitsubishi Vehicles
Battery Issue Solved, Mitsubishi Outlander Plug-In Hybrid Production To Double
初步调查事故的时候，发现电池组的一部分有熔毁痕迹，对熔毁的电池实物进行确认后发现，配备的80个电池单元中有一个单元因故过热，导致周边单元熔毁。电池组将80个单元分三组设置，只有其中一组有熔毁痕迹。出现问题的电池组配备的都是Lithium Energy Japan公司生产的50Ah电池单元。起火的EV电池单元的生产线进行过工序变更，可能是由此引发了故障。
Mitsubishi Motors Announces Findings of Investigations into Drive Battery Issues in Outlander PHEV and Other Electric Vehicles
1. Conclusion of Findings
The joint investigation revealed that the battery cell defect originated from a part of the supplier's manufacturing line, resulting in short-circuited battery cells. The defect occurred in a screening process that was added to the manufacturing line in December 2012. It was found that during this screening process the shape of an internal part of the battery cell was altered and some microscopic contaminants were generated as a result of battery cells being exposed to excessive force.
2. Removal of Screening Process
The screening process where the defect was occurring has been removed.
A new screening process introduced at the supplier production line was reported to cause malfunction in the batteries.
Mitsubishi Motors will announce recalls of all 4,305 of the Outlander plug-in hybrids it has sold since the vehicle went on sale in January, as well as 115 electric vehicles including the i-MiEV, once it decides how to prevent the manufacturing error.
In addition, Mitsubishi announced several other recalls this week for the Outlander PHEV that are unrelated to the battery issues. Among them is a recall of 3,839 vehicles due to potential problems with the control programs for the Front Power Drive Unit (PDU) and Rear Motor Control Unit (MCU), see right. It is possible the vehicle will not start, or it may depress the accelerator pedal causing the vehicle to move suddenly. The ECU also needs to be reprogrammed to address various issues.