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Battery pack box body, battery pack and electric vehicle

A battery pack and box technology, applied in the field of batteries, can solve the problems of deviation in manufacturing and assembly, lack of versatility and flexibility, cumbersome assembly process, etc., to reduce design and manufacturing costs, achieve flexibility and versatility , Improve the effect of space utilization

Pending Publication Date: 2021-12-10
BYD CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Due to the addition of structural parts such as end plates, side plates, beams, longitudinal beams, and fasteners, the weight of the entire battery pack is relatively large, and the utilization rate of the internal space of the battery pack is also reduced, making its energy density unable to meet the needs of users for electric vehicles. The needs of the car's battery life
Moreover, this structure also has a cumbersome assembly process and complicated assembly procedures. The battery needs to be assembled into a battery module first, and then the battery module is installed in the battery pack box, resulting in an increase in manpower and material costs.
[0003] In addition, the battery pack box is usually composed of a tray and an upper cover. The tray is assembled and welded by multiple side beams and bottom plates. In order to ensure that the tray has sufficient structural strength, some reinforcing beams and longitudinal beams are generally welded inside the tray Beam structure, however, this design leads to too many parts of the battery pack box, complex structure, low space utilization, and the need to connect the parts through welding and other processes, which will also lead to higher manufacturing costs
In addition, most battery pack boxes are single-layer structures, and the space utilization rate of single-layer battery pack boxes is low
In addition, the battery pack case and thermal management structure are designed independently, resulting in deviations in the manufacturing and assembly process, resulting in low thermal management efficiency and difficult manufacturing process and quality control
In addition, the battery pack box has not been designed in a standardized manner, and it cannot be combined and matched according to actual needs, so as to realize rapid assembly according to different needs
The existing battery pack box does not have the versatility and flexibility of use

Method used

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  • Battery pack box body, battery pack and electric vehicle
  • Battery pack box body, battery pack and electric vehicle
  • Battery pack box body, battery pack and electric vehicle

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Embodiment Construction

[0041] The following description is the preferred implementation of the application, it should be pointed out that for those skilled in the art, without departing from the principle of the application, some improvements and modifications can also be made, and these improvements and modifications are also considered For the scope of protection of this application.

[0042] In the description of the present application, it should be understood that the terms "length", "width", "upper", "lower", "front", "rear", "left", "right", "vertical", The orientation or positional relationship indicated by "horizontal", "top", "bottom", "inner", "outer", etc. are based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the application and simplifying the description, rather than Nothing to indicate or imply that a referenced device or element must have a particular orientation, be constructed, and operate in a particular orien...

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Abstract

The invention provides a battery pack box body, a battery pack and an electric vehicle. The battery pack box body comprises at least one box body and a mounting piece which is connected with the box body and is used for being connected with an external load; the box body is provided with at least one heat management partition plate, the heat management partition plate divides the box body into multiple layers of accommodating units, the multiple layers of accommodating units are arranged in a stacked mode in the first direction, and the first direction is the height direction of the battery pack box body; and at least one structural beam is arranged in the accommodating unit, and the accommodating unit is divided into a plurality of accommodating cavities for accommodating pole core components by the structural beams. The battery pack box body disclosed by the invention has the advantages of higher space utilization rate, higher structural strength, better heat management performance, simple structure and high production efficiency. In addition, combination and assembly can be carried out according to design requirements, and high flexibility and universality are achieved.

Description

Technical field [0001] This application relates to the field of batteries, and specifically relates to a battery pack box, a battery pack and an electric vehicle. Background technique [0002] With the continuous popularity of new energy vehicles, the requirements for the use of power batteries in new energy vehicles are becoming higher and higher. Traditional battery packs use battery modules installed in the battery pack box to form a battery pack structure. The battery module includes a battery pack composed of a plurality of single cells arranged in sequence, side plates disposed on both sides of the battery pack, and end plates disposed on both ends of the battery pack. The side plates and end plates are connected by bolts, tie rods, or welding to secure the battery pack. After the battery module is assembled, it is installed in the battery pack box through bolts and other fasteners. In order to improve the strength of the battery pack, it is usually necessary to set ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01M50/244H01M50/249H01M50/291H01M10/613H01M10/615H01M10/625H01M10/6551H01M10/6555H01M10/6556B60K1/04
CPCH01M10/613H01M10/615H01M10/625H01M10/6551H01M10/6555H01M10/6556B60K1/04H01M2220/20Y02E60/10
Inventor 王晓鹏彭青波鲁志佩朱建华朱燕孙华军
Owner BYD CO LTD
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