| 发明名称 | Lithium ion battery having desirable safety performance | ||
| 摘要 | Provided is a lithium ion battery including a battery can, a battery core received in the battery can, electrolyte filled in the battery can, and a battery cover assembled to the battery can. The battery can or the battery cover is provided with a pressure relief valve, and the pressure relief valve is coupled with a mesh cover defining a number of through holes therein. According to the present invention, when thermal runaway occurs to the lithium ion battery, the pressure relief valve breaks timely. Only gases and electrolyte vapor can pass through the mesh cover. Solid particles cannot pass through the mesh cover. Therefore, ignition of the flammable gases, the electrolyte vapor and the high temperature solid particles in the surrounding air afar from the pressure relief valve is avoided and the safety performance of the lithium ion battery can be improved remarkably. | ||
| 申请公布号 | US9614211(B2) | 申请公布日期 | 2017.04.04 |
| 申请号 | US201414486564 | 申请日期 | 2014.09.15 |
| 申请人 | Ningde Amperex Technology Limited;Dongguan Amperex Technology Limited | 发明人 | Chen Xiao bo;Chen Wei feng;Yuan Qing feng;Deng Ping hua;Li Quan kun;Wang Xue hui;Wu Wei zhong |
| 分类号 | H01M2/12;H01M10/0525;H01M2/10 | 主分类号 | H01M2/12 |
| 代理机构 | Alston & Bird LLP | 代理人 | Alston & Bird LLP |
| 主权项 | 1. A lithium ion battery, comprising: a battery can; a battery core received in the battery can; an electrolyte filled in the battery can; and a battery cover hermetically assembled to the battery can, wherein: the battery can or the battery cover is provided with a pressure relief valve;the pressure relief valve is coupled with a mesh cover defining a plurality of through holes therein; andeach through hole define in the mesh cover has a sectional area of 0.01˜50 mm2. | ||
| 地址 | NingDe CN | ||