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battery pack

A technology of battery packs and battery modules, which is applied in the directions of battery pack components, circuits, battery/battery traction, etc., which can solve the problems that are not conducive to the lightweight of the body, increase the manufacturing cost of the bicycle, and increase the weight of the whole vehicle, etc.

Active Publication Date: 2021-06-29
CHERY AUTOMOBILE CO LTD
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  • Description
  • Claims
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AI Technical Summary

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, which comprises correspondingly connected upper and lower casings. The upper bottom surface of the lower casing is respectively provided with inner beams, inner longitudinal beams, and inner longitudinal beams in the directions of vehicle width and vehicle length. Located in the middle of the lower case, the inner cross beam and the inner longitudinal beam are vertically arranged, and the battery module bracket is arranged on both sides of the inner longitudinal beam and connected with the inner cross beam and fixed in the chamber of the lower case. Spot welding is used to connect the inner beam, the inner longitudinal beam and the lower shell. The inner beam and the inner longitudinal beam are arranged vertically on the upper bottom of the lower shell, which strengthens the structural stability. The battery module bracket is connected and installed with the inner beam. There are mounting holes on the surface for the fixed installation of the battery module. The entire structure improves the rigidity of the battery pack, ensures a stable and reliable structure, and avoids the problems of abnormal resonance and durable cracking of the battery pack during driving, which will affect the battery module. The normal operation causes traffic inconvenience.

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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Patent Type & Authority Patents(China)
IPC IPC(8): B60L50/64B60K1/04H01M50/249H01M50/244
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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