The lower vehicle body structure comprises a vehicle body front cabin, a vehicle body rear floor, a left longitudinal beam and a right longitudinal beam, the vehicle body front cabin, the vehicle body rear floor, the left longitudinal beam and the right longitudinal beam are all die castings, and the front end and the rear end of the left longitudinal beam are fixed to the left rear portion of the vehicle body front cabin and the left front portion of the vehicle body rear floor respectively. The front and rear ends of the right longitudinal beam are respectively fixed on the right rear part of the vehicle body front cabin and the right front part of the vehicle body rear floor; a frame structure with a rectangular installation space in the middle is defined by the vehicle body front cabin, the vehicle body rear floor, the left longitudinal beam and the right longitudinal beam, and the battery box upper cover can be fixedly installed in the rectangular installation space to form a vehicle body floor. The lower vehicle body structure is formed by assembling four die castings together, and structural light weight is achieved. And the middle floor panel is also an upper cover of the power battery box, so that the battery box is convenient to mount, fix and seal. The four die castings are connected together through bolts and in a welding mode, the assembly process is simple, and the structural strength is high.
本发明公开了一种全采用压铸工艺的下车体结构,包括车身前舱、车身后地板、左边纵梁和右边纵梁,车身前舱、车身后地板、左边纵梁和右边纵梁均为压铸件,左边纵梁的前后两端分别固定于车身前舱的左后部和车身后地板的左前部,右边纵梁的前后两端分别固定于车身前舱的右后部和车身后地板的右前部;车身前舱、车身后地板、左边纵梁和右边纵梁围成一中部具有长方形安装空间的框架结构,电池箱上盖可安装固定于长方形安装空间内形成车身地板。下车体结构由四个压铸件组装在一起,实现了结构轻量化。中部地板面板同时也是动力电池箱的上盖,便于电池箱的安装、固定和密封。四个压铸件之间采用螺栓加上焊接的方式连接在一起,装配工艺简单,结构强度高。
Lower vehicle body structure completely adopting die-casting process
一种全采用压铸工艺的下车体结构
2022-10-11
Patent
Electronic Resource
Chinese
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 / B60L PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES , Antrieb von elektrisch angetriebenen Fahrzeugen |
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