Battery pack protective frame and battery pack

A battery pack, wherein the battery pack comprises:

• a lower box body comprising a battery pack protective frame, the battery pack protective frame comprises a plurality of frame components securely connected together, each frame component comprises a sealing portion extending in an up-down direction for sealing a plurality of battery assemblies to be mounted, a battery fixed portion protruding from a lower portion of the sealing portion toward an inner side in an inner-outer direction for fixing the plurality of battery assemblies to be mounted, and a protective portion protruding from the lower portion of the sealing portion toward an outer side in the inner-outer direction for connecting with a vehicle fixing member;
• a plurality of battery assemblies received in the battery pack protective frame and each battery assembly is securely connected to the corresponding battery fixed portion of the frame component;
• a box cover provided above the battery pack protective frame and securely connected to the sealing portions of the plurality of frame component;
• a gasket interposed between the box cover and the sealing portions of the plurality of frame components;
• a bottom plate provided under the battery pack protective frame and securely connected to the battery fixed portions of the plurality of frame components;
• and
• a protective plate provided under the bottom plate and securely connected to the protective portions of the plurality of frame components;
• wherein the sealing portion, the battery fixed portion and the protective portion of each frame component are integrally formed;
• wherein the protective portion has:
• a protective portion outer wall forming an external profile of the protective portion and a protective portion cavity inside the protective portion outer wall;
• and a plurality of protective portion ribbed plates positioned inside the protective portion cavity, supporting the protective portion outer wall and dividing the protective portion cavity into a plurality of sub-cavities;
• wherein two ends of each protective portion ribbed plate are connected to the protective portion outer wall;
• and
• wherein, in the plurality of protective portion ribbed plates, there are two protective portion ribbed plates which are provided at an outer end of the protective portion cavity in the inner-outer direction;
• in the two protective portion ribbed plates, an end of one protective portion ribbed plate and an end of the other one protective portion ribbed plate are connected together and are connected to an outer part of the protective portion outer wall in the inner-outer direction, and the other end of the one protective portion ribbed plate and the other end of the other one protective portion ribbed plate are respectively connected to two opposite parts of the protective portion outer wall in the up-down direction.