Battery pack, vehicle and energy storage device

Abstract

The invention discloses a battery pack, a vehicle and an energy storage device. The battery pack comprises a battery array and a support member, wherein the battery array includes a plurality of single batteries, the single batteries have a first size, and the first size is the maximum value of the distance between two parallel planes virtually clamping the single battery; at least one single battery satisfies the following conditions: the first size is greater than or equal to 600mm and less than or equal to 2500mm, and the single battery is supported on the support member; the normal direction of the two parallel planes corresponding to the first size is the Q-direction, the battery pack is internally provided with a battery placement area, the battery array is located in the battery placement area, and the single battery extends from one side of the battery placement area to the other side of the battery placement area in the Q-direction. According to the battery pack of the invention, the plurality of long single batteries form the battery pack, so that the battery capacity of the battery pack is improved. Meanwhile, the first size within the specific range is adopted, and thusthe space utilization ratio of the battery pack can be improved.

Description

[0001] Cross References to Related Applications [0002] This application claims the priority of the Chinese patent application numbers "201910021244.0", "201910020967.9", "201910021246.X", "201910021248.9", "201910021247.4" and "201910020925.5" submitted by BYD Co., Ltd. on January 9, 2019. The entire contents are incorporated by reference in this application. technical field [0003] The present application belongs to the technical field of vehicle manufacturing, and in particular, relates to a battery pack, a vehicle with the battery pack, and an energy storage device with the battery pack. Background technique [0004] In the related art, such as battery packs used in electric vehicles, mainly include a battery pack and a plurality of battery modules installed in the battery pack, wherein each battery module is assembled from a plurality of single cells. [0005] Specifically, such as figure 1 As shown, the battery pack includes a battery pack casing, and multiple beam...

AI Technical Summary

Problems solved by technology

[0007] As the user's requirements for the battery life of the electric vehicle gradually increase, and in the case of limited space at the bottom of the vehicle body, the battery pack provided by the above-mentioned related technical embodiment, the end plate and the side plate of the battery module 400, and the internal parts of the battery pack Connection and installation methods, etc., all reduce the utilization rate of the internal space of the battery pack; as a result, the ratio of the volume of the single cells in the battery pack to the volume of the battery pack is too low, and its energy density cannot meet the above-mentioned demand. Important Factors Restricting the Development of Electric Vehicles

In addition, there is a cumbersome assembly process, and the assembly process is complicated. It needs to be assembled into a battery module first, and then the battery module is installed in the battery pack, which increases the cost of manpower and material resources. During the assembly process, the probability of defective rate is increased. Repeated assembly increases the possibility of the battery pack being loose and not firmly installed, which will have a negative impact on the quality of the battery pack, and the stability of the battery pack will decrease. reduce

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