Yes, electric car batteries usually have a bottom cover. The role of the bottom cover is to protect the battery chip and wire connection inside the battery to prevent external dust, moisture and other substances from entering the battery, so as to ensure the normal operation and safety of the battery.
The bottom cover is usually made of high temperature resistant, waterproof and dustproof materials, which can effectively isolate the battery from the external environment and improve the service life and stability of the battery. In addition, the bottom cover can also play a role in fixing the battery to ensure that the battery will not loose or fall off during driving. Therefore, the bottom cover of the electric vehicle battery is a very important component.
The cover on the top of the battery is the press of the battery interface. With it can prevent the battery QQ failure caused by falling. The phone doesn't turn on or can't be charged