VEHICLE BODY LOWER PART STRUCTURE

• Main Authors: YASUI TAKESHI, IEMURA YU, KAWABE SATORU, TATEWAKI MASAAKI, YASAKA SATOSHI
• Format: Patent
• Language: English; Japanese
• Published: 11.04.2024
• Subjects: ARRANGEMENT OR MOUNTING OF PLURAL DIVERSE PRIME-MOVERS INVEHICLES; ARRANGEMENT OR MOUNTING OF PROPULSION UNITS OR OFTRANSMISSIONS IN VEHICLES; ARRANGEMENTS IN CONNECTION WITH COOLING, AIR INTAKE, GASEXHAUST OR FUEL SUPPLY OF PROPULSION UNITS, IN VEHICLES; AUXILIARY DRIVES FOR VEHICLES; INSTRUMENTATION OR DASHBOARDS FOR VEHICLES; LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS; MOTOR VEHICLES; PERFORMING OPERATIONS; TRAILERS; TRANSPORTING; VEHICLES IN GENERAL

To provide a vehicle body lower part structure which can efficiently absorb collision energy while preventing damage of a battery mounted theron when a buffer load is input.SOLUTION: A vehicle body lower part structure includes: side frames 50 each connecting a battery pack 20 disposed below a floor part 13 with a side sill 12; and a battery frame 38 supporting a battery 27 in the battery pack 20. A first joint flange 55, which is joined to a case bottom part 41, of the side frame 50 is arranged so that a second joint flange 75, which is joined to the case bottom part 41, of the battery frame 38 overlaps with the upper side of the first joint flange in a vertical direction.SELECTED DRAWING: Figure 2 【課題】衝突荷重の入力時に、搭載するバッテリの損傷を防止しつつ、衝突エネルギーを効率良く吸収することができる車体下部構造を提供する。【解決手段】車体下部構造は、フロア部１３の下方に配置されるバッテリパック２０とサイドシル１２とを連結するサイドフレーム５０と、バッテリパック２０の内部でバッテリ２７を支持するバッテリフレーム３８と、を備える。サイドフレーム５０のうちケース底部４１に接合する第１接合フランジ５５は、バッテリフレーム３８のうちケース底部４１に接合する第２接合フランジ７５が上下方向において上側に重なるように配置される。【選択図】図２