ELECTRODE MANUFACTURING APPARATUS

• Main Authors: KITAYOSHI MASANORI, ENOHARA KATSUSHI, ISHIYAMA AKIRA, MIMURA TETSUYA
• Format: Patent
• Language: English; Japanese
• Published: 29.09.2022
• Subjects: APPARATUS FOR APPLYING LIQUIDS OR OTHER FLUENT MATERIALS TOSURFACES, IN GENERAL; APPLYING LIQUIDS OR OTHER FLUENT MATERIALS TO SURFACES, IN GENERAL; BASIC ELECTRIC ELEMENTS; ELECTRICITY; PERFORMING OPERATIONS; PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSIONOF CHEMICAL INTO ELECTRICAL ENERGY; SPRAYING OR ATOMISING IN GENERAL; TRANSPORTING

To provide a method for manufacturing an electrode that can stably manufacture an electrode including an electrode mixture layer having a desired film thickness.SOLUTION: An electrode manufacturing apparatus 100 includes a first roll 10, a second roll 20, and a third roll 30. A rolling gap G1 is formed between the first roll 10 and the second roll 20 to roll an electrode material A and form a mixture coating film B, and a crimping gap G2 for crimping the mixture coating film B and an electrode current collector C is formed between the second roll 20 and the third roll 30. The electrode manufacturing apparatus 100 includes a spring-like mechanism 40 for energizing the third roll 30 to the second roll 20, the crimping gap G2 fluctuates according to change of reaction force from the mixture coating film B. As a result, it can be prevented that the third roll 30 cannot follow the reaction force from the mixture coating film B, resulting in occurrence of pressing failure, and variation in film thickness of the electrode mixture layer D2 after manufacturing.SELECTED DRAWING: Figure 1 【課題】所望の膜厚の電極合材層を有した電極を安定的に製造できる電極の製造方法を提供する。【解決手段】ここに開示される電極製造装置１００は、第１ロール１０と、第２ロール２０と、第３ロール３０とを備えており、第１ロール１０と第２ロール２０との間に、電極材料Ａを圧延して合材塗膜Ｂを形成する圧延ギャップＧ１が形成され、かつ、第２ロール２０と第３ロール３０との間に、合材塗膜Ｂと電極集電体Ｃとを圧着する圧着ギャップＧ２が形成されている。そして、ここに開示される電極製造装置１００では、第３ロール３０を第２ロール２０に向かって付勢するバネ状機構４０を備えており、合材塗膜Ｂからの反力の変動に応じて圧着ギャップＧ２が変動する。これによって、合材塗膜Ｂからの反力に第３ロール３０が追従できずに押圧不良が生じることを防止し、製造後の電極合材層Ｄ２の膜厚のバラつきを低減できる。【選択図】図１