To provide a vehicle body lower part structure which can sufficiently absorb energy of an impact load with a battery cross member and stably protect battery cells with the battery cross member when the impact load is input from the vehicle body lateral side.SOLUTION: A vehicle body lower part structure includes: a pair of left and right side sills 14; a battery pack 28; and battery cross members 45. The battery pack 28 is coupled to the side sills 14 at end parts as seen in a vehicle with direction in a state where the battery pack 28 houses battery cells 51 therein and is disposed below a floor panel. Each battery cross member 45 is disposed substantially along the vehicle width direction at an interior of the battery pack 28 and extends to the outer side as seen in the vehicle width direction further than the battery cells 51. The battery cross member 45 includes: a first cross member 45A; and a second cross member 45B extending to the outer side as seen in the vehicle width direction further than the first cross member 45A.SELECTED DRAWING: Figure 6

    【課題】車体側方からの衝撃荷重の入力時に、衝撃荷重のエネルギーをバッテリクロスメンバによって充分に吸収でき、かつ、バッテリクロスメンバによってバッテリセルを安定して保護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、左右一対のサイドシル14と、バッテリパック28と、バッテリクロスメンバ45と、を備えている。バッテリパック28は、内部にバッテリセル51を収納し、フロアパネルの下方に配置された状態で、車幅方向の端部がサイドシル14に結合される。バッテリクロスメンバ45は、バッテリパック28の内部に車幅方向に略沿って配置され、バッテリセル51よりも車幅方向外側に延びている。バッテリクロスメンバ45は、第1クロスメンバ45Aと、第1クロスメンバ45Aよりも車幅方向外側に延出する第2クロスメンバ45Bと、を備えている。【選択図】図6


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    Title :

    VEHICLE BODY LOWER PART STRUCTURE


    Additional title:

    車体下部構造


    Contributors:

    Publication date :

    2019-11-28


    Type of media :

    Patent


    Type of material :

    Electronic Resource


    Language :

    Japanese


    Classification :

    IPC:    B62D MOTOR VEHICLES , Motorfahrzeuge / B60K Anordnung oder Einbau von Antriebseinheiten oder von Kraft- bzw. Drehmomentübertragungen in Fahrzeugen , ARRANGEMENT OR MOUNTING OF PROPULSION UNITS OR OF TRANSMISSIONS IN VEHICLES / H01M Verfahren oder Mittel, z.B. Batterien, für die direkte Umwandlung von chemischer in elektrische Energie , PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY



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