The invention relates to the technical field of power batteries, and particularly discloses a power battery pack and an electric vehicle, the power battery pack and the electric vehicle comprise a battery module, a protective shell and a pressurization assembly, the battery module comprises a plurality of battery cells, and the plurality of battery cells are sequentially stacked in the vertical direction; the protective shell is provided with a mounting cavity; the battery module is arranged in the mounting cavity; the pressurizing assembly comprises a top plate, a bottom plate and an elastic part, the bottom plate is arranged in the mounting cavity and laid on the bottom wall of the mounting cavity, the battery module is arranged on the bottom plate, the top plate is arranged on the side, away from the bottom plate, of the battery module, the elastic part is arranged between the top plate and the top wall of the mounting cavity, and the elastic part enables the top plate to tend to approach the bottom plate. When part of the battery cells expand, the position of the top plate can be adjusted along with the expansion of the part of the battery cells, so that the expansion of the part of the battery cells is buffered, and meanwhile, the pressurizing assembly has a restraining effect on the expansion of the battery cells. Therefore, the pressurizing assembly can avoid damage to the battery module, avoids deformation of the protective shell, and improves the cycling stability of the power battery pack.
本发明涉及动力电池技术领域,具体公开了动力电池包及电动车,该动力电池包及电动车包括电池模组、保护壳和加压组件,电池模组包括多个电芯,多个电芯沿竖直方向依次叠设;保护壳设置有安装腔;电池模组设置于安装腔内;加压组件包括顶板、底板和弹性件,底板设置于安装腔内且铺设于安装腔的底壁,电池模组设置于底板上,顶板设置于电池模组远离底板的一侧,弹性件设置于顶板和安装腔的顶壁之间,弹性件使顶板具有向底板靠近的趋势。部分电芯发生膨胀时,顶板会随之调整位置,进而对部分电芯的膨胀进行缓冲,同时,加压组件对电芯的膨胀具有约束的作用。因此,该加压组件可以避免造成电池模组的损坏,避免保护壳的变形,提升动力电池包的循环稳定性。
Power battery pack and electric vehicle
动力电池包及电动车
2024-07-02
Patent
Electronic Resource
Chinese
IPC: | B60L PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES , Antrieb von elektrisch angetriebenen Fahrzeugen / H01M Verfahren oder Mittel, z.B. Batterien, für die direkte Umwandlung von chemischer in elektrische Energie , PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY |
Power battery pack shell structure, power battery pack and electric vehicle
European Patent Office | 2020
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