Connecting frame for vehicle fuel cell system

Abstract

The invention discloses a connecting frame for a vehicle fuel cell system, which comprises a plate-shaped body, a front suspension mounting structure is arranged on the outer wall of one side of the plate-shaped body, and a middle suspension mounting structure and a rear suspension mounting structure are arranged on the two opposite side walls adjacent to the front suspension mounting structure; the front suspension mounting structure comprises a lug plate, wherein the lug plate is provided with a first kidney-shaped hole. A connecting line of two circle centers of the first waist-shaped hole is vertical to the plate-shaped body; the middle suspension mounting structure comprises a first inclined plate and a first placement plate; one end of the first inclined plate is connected with the plate-shaped body, and the other end is connected with the first placement plate; the first placement plate is parallel to the plate-shaped body; a round hole is formed in the first placement plate; the rear suspension mounting structure comprises a second inclined plate and a second placement plate; one end of the second inclined plate is connected with the plate-shaped body, and the other end is connected with the second placing plate. Cast aluminum materials are adopted, the suspension support is cast at the same time, and the number of parts and installation procedures are reduced. The whole system is mounted on the suspension rubber, the pre-tightening bolt can complete the mounting with the whole vehicle, and the operation is simple and easy.

Description

technical field [0001] The invention belongs to the technical field of automobiles, and in particular relates to a fuel cell installation structure. Background technique [0002] As a power generation device, the fuel cell system is mounted on the vehicle. The interior of the electric stack is formed by superposition of multiple single cells. The single cells rely on mutual friction to keep relatively static, and there is no physical structure to prevent the mutual dislocation of the single cells. Therefore, the vehicle fuel cell system needs to resist the vibration load from the running process of the car to avoid the dislocation of the single cells from causing the power generation system. Low temperature will reduce the life of the stack membrane. Therefore, the vehicle fuel cell needs to design a reasonable suspension damping system. The weight of the fuel cell system is generally 180 kg. In the case of emergency braking, the inertial force is relatively large, which ...

AI Technical Summary

Problems solved by technology

[0005] 1. The weight of the whole frame is heavy, the welding precision is not high, and the welding strength is unstable

[0006] 2. The material of the frame itself has small damping effect and poor vibration absorption effect

[0007] 3. Considering that multiple BOP accessories need to be installed, the welded frame structure is more complicated, and the structural size of the whole system is too large

[0008] 4. The existing fuel cell system generally adopts four-point connection, the four points mainly share the gravity, and the influence of the braking inertia force is not taken into account, especially for the situation where the gravity is large and the center of gravity of the fuel cell system is higher than the horizontal plane of the vehicle frame , the overturning moment generated during braking is relatively large, and the force on the four installation points is seriously uneven

In the case of a larger stress pair at the installation point, the fatigue life is seriously reduced

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