Sony to take over 100,000 batteries for laptop computers to voluntary collection due to overheating accident

Today announced that Sony will collect 100,000 lithium-ion battery packs for notebook PCs that were offered for other companies.

An accident of overheating including smoking and ignition occurred, and 2000 is said to be collected in Japan as well.

Details are as follows.
Sony Japan | Press Release | Cooperation on Voluntary Collection of Notebook Computer Battery Pack by Some PC Manufacturers

According to this release, in response to a specific model of battery pack for laptop computers that Sony supplies to other companies, 40 smoking and ignition accidents occurred worldwide, some PC manufacturers and American consumer It seems to cooperate in collecting 100,000 battery packs for laptop computers released by the Product Safety Committee.

In addition, the battery pack of the target model is not used for "VAIO", which is our company's product, and no accident report has been made for about 2,000 batteries to be collected in the Japanese market Thing.

Regarding the cause of concern, it is estimated that the manufacturing line adjustment during the specific period from October 2004 to June 2005 affected the quality of some battery cells, and in a very small number There is an accident which is thought to be caused by a member failure on some of the things.

OnceSony is also raising a similar accident, Matsushita Battery Industry (now Panasonic Energy)Collect 46 million battery packs supplied for NOKIA mobile phone, Furthermore, Sanyo Electric made battery packThe release of Mitsubishi Electric's FOMA terminal "D903i" is delayed significantly due to abnormal heat generation and bursting problemAlthough it is a lithium-ion battery that caused various problems, such as high energy density, it is inherently dangerous, and details are summarized in the following link.

Abnormal heat generation problem of lithium ion secondary battery - Wikipedia