BATTERY PACK AND ELECTRIC APPARATUS
This application relates to a battery pack and an electric apparatus. The battery pack includes a battery cell and a box. The box includes a body and a bottom cover disposed at the bottom of the body, where the bottom cover and the body are hermetically connected and jointly form a closed accommodating cavity, and the battery cell is accommodated in the accommodating cavity.
1 . A battery pack, comprising:
a battery cell; and
a box, the box comprising a body and a bottom cover disposed at the bottom of the body;
wherein the bottom cover and the body are hermetically connected and jointly form a closed accommodating cavity, and the battery cell is accommodated in the accommodating cavity.
2 . The battery pack according to claim 1 , wherein the bottom cover is hermetically connected to the body via a sealing member.
3 . The battery pack according to claim 1 , wherein a minimum thickness h of the bottom cover satisfies 0.2 mm<h<20 mm.
4 . The battery pack according to claim 3 , wherein a weight m of the battery cell and the minimum thickness h of the bottom cover satisfy 0.03 mm/Kg≤h/m≤100 mm/Kg.
5 . The battery pack according to claim 1 , wherein
the bottom cover comprises a cover portion and a mounting portion;
the mounting portion is connected to an edge of the cover portion in an enclosing manner;
the cover portion is configured to define the accommodating cavity; and
the mounting portion is hermetically connected to the body.
6 . The battery pack according to claim 5 , wherein the cover portion protrudes in a direction leaving the accommodating cavity with respect to the mounting portion.
7 . The battery pack according to claim 1 , wherein the bottom cover and the battery cell are spaced apart.
8 . The battery pack according to claim 1 , wherein
the body comprises a bearing member located at the top of the box;
the bearing member is configured to define the accommodating cavity; and
the battery cell is suspended under the bearing member.
9 . The battery pack according to claim 8 , wherein
an outer surface of the battery cell facing the bearing member is a first outer surface;
the battery cell comprises an electrode terminal; and
the electrode terminal is arranged on an outer surface other than the first outer surface of the battery cell.
10 . The battery pack according to claim 9 , wherein the battery cell has a second outer surface facing away from the first outer surface, and the electrode terminal is arranged on the second outer surface.
11 . The battery pack according to claim 8 , wherein the battery cell is adhered to the bearing member.
12 . The battery pack according to claim 1 , wherein
the body comprises a frame and a bearing member;
the frame encloses a cavity with two ends through in a vertical direction;
the bottom cover and the bearing member respectively cover two opposite ends of the cavity in the vertical direction; and
the bottom cover, the frame, and the bearing member jointly enclose the accommodating cavity.
13 . The battery pack according to claim 12 , wherein the bearing member and the frame are fixedly connected or integrally formed.
14 . An electric apparatus, comprising the battery pack according to claim 1 , wherein the battery pack is configured to supply electrical energy to the electric apparatus.
15 . The electric apparatus according to claim 14 , wherein the electric apparatus comprises a vehicle, and the battery pack is disposed at the bottom of a vehicle body of the vehicle.
16 . The electric apparatus according to claim 15 , wherein
the vehicle body comprises a bearing member located at the top of the box;
the bearing member is configured to define the accommodating cavity; and
the battery pack is mounted to the vehicle body via the bearing member.
17 . The electric apparatus according to claim 16 , wherein the bearing member is configured to constitute at least a part of a chassis of the vehicle body.