Electric vehicle platform expansion structure without battery pack shell

Abstract

The invention discloses an electric vehicle platform expansion structure without a battery pack shell. The electric vehicle platform expansion structure comprises a front anti-collision beam, a rear longitudinal beam, a rear floor cross beam, a rear anti-collision beam, two front longitudinal beams, two front variable longitudinal beam connecting modules, a middle vehicle body battery frame and two rear variable longitudinal beam connecting modules. The rear floor cross beam is connected with a rear longitudinal beam, and the rear longitudinal beam is connected with a rear anti-collision beam; the plurality of front longitudinal beams are connected with the front anti-collision beam, and each front longitudinal beam is connected with one end of each front variable longitudinal beam connecting module; the other end of each variable longitudinal beam connecting module is connected with the middle vehicle body battery frame; one end of each rear variable longitudinal beam connecting module is connected with the middle vehicle body battery frame, and the other end of each rear variable longitudinal beam connecting module is connected with a rear longitudinal beam; the middle vehicle body battery frame serves as a vehicle body framework and is also used for containing the battery module, the weight of a vehicle body is reduced, the driving range of the electric vehicle is increased, and the length of the vehicle body framework and the ground clearance of a vehicle chassis are expanded.

Description

technical field [0001] The invention relates to the technical improvement of electric vehicle battery packs, in particular to an electric vehicle platform expansion structure without a battery pack casing. Background technique [0002] The electric vehicle market is changing rapidly, and consumers' requirements for battery life are increasing day by day. At present, the battery pack technology is developing rapidly. CTC (Cell to Chassis) technology, which integrates the battery cell and the chassis, can make the battery pack more flexible and more efficient. With more flexible collocation, it will become the mainstream form of electric vehicle batteries, but the current expansion form of the vehicle body structure is costly. If you need to increase the battery pack space, you need to re-mould the surrounding environment components of the original battery pack, and the scalability is very poor. , it has been unable to meet the current electric vehicle's demand for flexible ch...

AI Technical Summary

Problems solved by technology

[0002] The electric vehicle market is changing rapidly, and consumers' requirements for battery life are increasing day by day. At present, the battery pack technology is developing rapidly. More flexible matching will become the mainstream form of electric vehicle batteries, but the current expansion of the car body structure is costly. If the space of the battery pack needs to be increased, the surrounding environmental components of the original battery pack need to be re-moulded, and the expandability is very poor. , can no longer meet the needs of existing electric vehicles for flexible changes in power consumption; the frequency of electric vehicle product launches has increased, and it is particularly important to consider the expansion methods between different models

[0003] The invention patent with the publication number CN108891248A discloses a variable electric platform, a body frame and an electric vehicle. The variable electric platform mainly includes power battery components, chassis front suspension, chassis rear suspension and body frame, chassis front suspension It is connected to the front of the body frame, and the rear suspension of the chassis is connected to the rear of the body frame. The power battery assembly includes a battery box and multiple battery modules. Multiple battery modules are arranged in the battery box and connected to the battery box. The battery box is connected to the body frame. The variable electric platform and electric vehicle obtained through the above-mentioned design can arrange the number of battery modules according to different models when in use, so as to achieve the predetermined cruising range. The battery box has different electric vehicles. The versatility of cell layout, the battery box adopts a regular design to maximize the use of the internal space of the box; the patent is only for C to P (Cell to Pack battery pack without modules), although the body frame can be expanded, it still needs to be expanded. It matches the battery pack shell; the size of the battery pack shell limits the expansion range of the body frame, and the flexibility of its body expansion is not high. The car body only needs to have several adjacent expansion areas. The flexibility is compared with the CTC structure There are still certain limitations, the applicability is not high, and it cannot meet the product iteration needs of the electric vehicle market

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