Combined type battery frame assembly of electric automobile

Abstract

A combined type battery frame assembly of an electric automobile comprises two side battery frames radially fixed to the outer sides of a left longitudinal beam and a right longitudinal beam of an automobile frame and a middle battery frame fixed between the left longitudinal beam and the right longitudinal beam of the automobile frame. A supporting frame used for fixing and connecting the middle battery frame and the side battery frames is further arranged between the middle battery frame and the two side battery frames. The battery frame assembly has the advantages that the layout is reasonable, the number of contained battery packs is large, the structure is simple, the manufacturing and maintaining cost is low, the weight is small, the structural stability is good, and bearing capacity is high; and the battery frame assembly has prominent practicability.

Description

technical field [0001] The invention relates to a battery frame assembly for a power battery of an electric vehicle, in particular to a combined battery frame assembly including an inner battery frame and an outer battery frame of the left and right longitudinal beams of a vehicle frame, and belongs to the technical field of vehicle power device accessories. Background technique [0002] At present, the power battery packs of existing pure electric vehicles have the characteristics of large number of batteries and heavy weight. At the same time, due to the limitation of vehicle parameters, the battery frame for installing the battery pack has very strict requirements in terms of structural size, weight and reliability. . [0003] The Chinese utility model patent "Authorized Announcement Number: CN 205326785 U, Authorized Announcement Date: June 22, 2016, Name: Electric Truck Power Battery Pack Support Frame" discloses a The battery pack support frame has the following probl...

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Problems solved by technology

[0002] At present, the power battery packs of existing pure electric vehicles have the characteristics of large number of batteries and heavy weight. At the same time, due to the limitation of vehicle parameters, the battery frame for installing the battery pack has very strict requirements in terms of structural size, weight and reliability.

[0003] The Chinese utility model patent "Authorized Announcement Number: CN 205326785 U, Authorized Announcement Date: June 22, 2016, Name: Electric Truck Power Battery Pack Support Frame" discloses a The battery pack support frame has the following problems: 1. There are many parts, the overall structure is complex, the weight is large, and the manufacturing cost is high; 2. It is a single-layer design, which does not make full use of the vertical space in the frame. The ability is weak; 3. The baffle is welded on the connecting plate, and the connecting plate is connected by welding the baffle and the fixing plate of the bottom plate. The unreasonable structural design and fixing method together lead to poor structural stability of the support frame and poor overall support. Weakness

[0004] The Chinese utility model patent "Authorized Announcement Number: CN 2205439952 U, Authorized Announcement Date: August 10, 2016, Name: A Bracket for Electric Truck Power Battery Box" discloses a battery frame fixed on the upper part of the frame longitudinal beam , the battery frame has multiple layers, and multiple power battery packs can be placed at the same time. The space below not only causes tension in the upper space of the frame, but also does not effectively use the idle space, and the layout design is extremely unreasonable

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