Battery pack

A technology of battery packs and battery modules, which is applied to battery pack parts, circuits, electric vehicles, etc., can solve the problems of increasing the weight of the whole vehicle, which is not conducive to the lightweight of the body, and increases the manufacturing cost of the bicycle, so as to avoid resonance and abnormal noise , Improve the rigidity performance and avoid the effect of durable cracking

Active Publication Date: 2017-06-23
CHERY AUTOMOBILE CO LTD
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Problems solved by technology

These improvement methods also have their shortcomings: the weight of the whole vehicle is increased, which is not conducive to the lightweight of the vehicle body; the cost of bicycle manufacturing is increased

Method used

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Embodiment Construction

[0011] combined with Figure 1~4 The present invention is further described:

[0012] A battery pack, comprising upper and lower casings 10 and 20 connected correspondingly, the upper bottom surface of the lower casing 20 is respectively provided with an inner beam 30 and an inner longitudinal beam 40 in the direction of vehicle width and vehicle length. The longitudinal beam 40 is located in the middle of the lower case 20 , the inner crossbeam 30 is arranged perpendicular to the inner longitudinal beam 40 , and the battery module bracket 50 is arranged on both sides of the inner longitudinal beam 40 and connected with the inner crossbeam 30 and fixed in the cavity of the lower case 20 indoor. Spot welding is used to connect the inner beam 30, the inner longitudinal beam 40 and the lower shell 20, and the inner beam 30 and the inner longitudinal beam 40 are vertically arranged on the upper bottom surface of the lower shell 20, forming a similar "shi" shape, which strengthens...

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Abstract

The invention discloses a battery pack. The battery pack comprises an upper shell and a lower shell which are correspondingly connected. An inner transverse beam and an inner longitudinal beam are arranged on the upper bottom face of the lower shell in the vehicle width direction and in the vehicle length direction respectively, the inner longitudinal beam is located in the middle of the lower shell, the inner transverse beam and the inner longitudinal beam are distributed in a crossed and mutually perpendicular mode, and a battery module support is distributed on the two sides of the inner longitudinal beam, connected with the inner transverse beam and fixed in a cavity of the lower shell. The inner transverse beam, the inner longitudinal beam and the lower shell are connected in a spot welding mode, and the inner transverse beam and the inner longitudinal beam are distributed on the upper bottom face of the lower shell in a crossed and mutually perpendicular mode so that the structural stability can be enhanced; the battery module support and the inner transverse beam are connected in a matched mode, installation holes are formed in installation faces and used for fixedly installing a battery module, the whole structure improves the stiffness property of the battery pack, structural stability and reliability are ensured, and the problems that a battery pack generates resonance abnormal sound and cracks after long-time use in the driving process, accordingly normal operation of a battery module is affected and accordingly driving is inconvenient are avoided.

Description

technical field [0001] The invention relates to the technical field of electric vehicles, in particular to a battery pack. Background technique [0002] With the rapid development of the automobile industry, the number of domestic automobiles has increased rapidly, which has accelerated the consumption of non-renewable resources, and at the same time, exhaust emissions have caused air pollution. Compared with traditional power vehicles, electric vehicles have good energy-saving and environmental protection effects, and have been favored by more and more people. The battery pack is the core component of electric vehicles, and a certain number of battery modules are loaded inside it to store electric energy for driving. source of power. During the driving of electric vehicles, the battery pack body will be subjected to external vibration and impact loads, which will have a certain impact on the internal battery modules and electrical components. Therefore, in order to ensure ...

Claims

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Application Information

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IPC IPC(8): B60K1/04H01M2/10H01M50/249
CPCB60K1/04B60K2001/0438H01M50/20Y02E60/10Y02T10/70
Inventor 张政蒋成武刘丽丽何文强
Owner CHERY AUTOMOBILE CO LTD
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