BATTERY SEPARATOR, POWER STORAGE BATTERY, BATTERY PACK, ELECTRIC VEHICLE, AND MANUFACTURING METHOD FOR BATTERY SEPARATOR

• Main Authors: MURAMATSU MASANORI, TAKEBE TOMONORI
• Format: Patent
• Language: English; Japanese
• Published: 01.09.2022
• Subjects: BASIC ELECTRIC ELEMENTS; ELECTRICITY; PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSIONOF CHEMICAL INTO ELECTRICAL ENERGY

To provide a battery separator, a power storage battery, a battery pack, an electric vehicle, and a manufacturing method for the battery separator capable of preventing joint defects in joints even when ribs are provided.SOLUTION: A battery separator includes: a base having a first main part located on one end side in a first direction and a second main part located on the other end side in the first direction; a joint part that joins one end part of the first main part and one end part of the second main part in a second direction perpendicular to the first direction, and extends in a third direction perpendicular to the first direction and the second direction; and a plurality of first ribs that protrude from the first main part in the first direction, extends in the third direction, and are periodically arranged in the second direction. In a first area where the joint part is formed in the first main part, one or less of the plurality of first ribs is arranged.SELECTED DRAWING: Figure 7 【課題】リブが設けられる場合であっても接合部の接合不良を抑制可能な電池用セパレータ、蓄電池、組電池、電動車及び電池用セパレータの製造方法を提供する。【解決手段】電池用セパレータは、第１方向における一端側に位置する第１主部、及び第１方向における他端側に位置する第２主部を有する基部と、第１方向に直交する第２方向における第１主部の一端部と第２主部の一端部とを接合すると共に、第１方向及び第２方向に直交する第３方向に延びる接合部と、第１方向において第１主部から突出すると共に第３方向に延び、第２方向において周期的に配列される複数の第１リブと、を備える。第１主部において接合部が形成される第１領域には、複数の第１リブのうち１列以下の第１リブが配置される。【選択図】図７