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    • 1. 发明申请
    • METHOD FOR MANUFACTURING LITHIUM ION SECONDARY BATTERY
    • 制造锂离子二次电池的方法
    • US20140134486A1
    • 2014-05-15
    • US14078943
    • 2013-11-13
    • Yozo UchidaNobuyuki YamazakiTomohide SumiTomohiko Ishida
    • Yozo UchidaNobuyuki YamazakiTomohide SumiTomohiko Ishida
    • H01M4/62
    • H01M4/622H01M4/0404H01M4/139H01M4/1393H01M4/587H01M4/621Y02P70/54Y10T29/49115
    • The method for manufacturing a lithium ion secondary battery includes a binder coating step (18), a mixture supplying step (20), a magnetic field applying step (22), and a convection generating step (24). The binder coating step (18) is a step of coating a slurry-form binder (18a) on a metal foil (12a) (collector). The mixture supplying step (20) is a step of supplying a negative electrode mixture containing graphite so as to be superposed on the slurry-form binder (18a) coated on the metal foil (12a) in the binder coating step (18). The magnetic field applying step (22) is a step of applying a magnetic field having magnetic lines of force pointing in the direction orthogonal to the metal foil (12a), to the negative electrode mixture (20a) coated on the metal foil (12a) in the mixture supplying step (20). Further, the convection generating step (24) is a step of generating convection in the negative electrode mixture (20a) by applying heat to the negative electrode mixture (20a) to which a magnetic field has been applied in the magnetic field applying step (22).
    • 锂离子二次电池的制造方法包括粘合剂涂布工序(18),混合物供给工序(20),磁场施加工序(22)和对流生成工序(24)。 粘合剂涂布步骤(18)是在金属箔(12a)(集电体)上涂布浆料形式的粘合剂(18a)的步骤。 混合物供给步骤(20)是在粘合剂涂布步骤(18)中,供给包含石墨的负极混合物以叠加在涂覆在金属箔(12a)上的浆料形式的粘合剂(18a)上的步骤。 磁场施加步骤(22)是将具有与金属箔(12a)正交的方向指向的磁力线的磁场施加到涂覆在金属箔(12a)上的负极混合物(20a)的步骤, 在混合物供给步骤(20)中。 此外,对流生成工序(24)是通过向在磁场施加工序(22)中施加有磁场的负极合剂(20a)进行加热而在负极合剂(20a)中产生对流的工序 )。