Battery unit and vehicle

1. A battery unit comprising:

a battery module;

an upper frame member that holds the battery module in a suspended state;

a battery case that contains the battery module held by the upper frame member;

a battery cover that covers an upper opening of the battery case; and

a sealing member that seals a gap between the battery case and the battery cover,

wherein the upper frame member is secured to the battery cover with a sealing bolt seated in the battery cover and thereby the battery module is held by the battery cover,

wherein the battery unit is secured to a vehicle body frame with a fixing member; and

wherein the fixing member is welded to the battery cover so as to surround the sealing bolt and has a fixing member opening through which the sealing bolt is inserted.

2. The battery unit according to claim 1 ,

wherein a reinforcing member is provided between the battery cover and the upper frame member so as to surround the sealing bolt.

3. The battery unit according to claim 2 ,

wherein the fixing member is provided with a front fixing member secured to a front cross member and a rear fixing member secured to a rear cross member.

4. A vehicle comprising:

a floor panel;

a seat disposed on the floor panel; and

the battery unit according to claim 3 ,

wherein the battery unit is disposed in a battery storage recess surrounded by a pair of left and right side frames and a pair of front and rear cross members;

wherein the battery storage recess is recessed from the floor panel so as to be located below the seat; and

wherein a load path is formed of the front fixing member, the upper frame member, the reinforcing member, and the rear fixing member so as to extend from the front cross member to the rear cross member.

5. A battery unit comprising:

a battery module;

an upper frame member from which the battery module is suspended;

a battery case having an opening to accommodate the battery module in the battery case;

a battery cover to cover the opening of the battery case;

a sealing member to seal a gap between the battery case and the battery cover; and

a sealing bolt provided on the battery cover and secured to the upper frame member to connect the battery module and the battery cover via the upper frame member,

wherein the battery unit is secured to a vehicle body frame with a fixing member; and

wherein the fixing member is welded to the battery cover to surround the sealing bolt and has a fixing member opening through which the sealing bolt is inserted.

6. The battery unit according to claim 5 ,

wherein a reinforcing member is provided between the battery cover and the upper frame member to surround the sealing bolt.

7. The battery unit according to claim 6 ,

wherein the fixing member is provided with a front fixing member secured to a front cross member and a rear fixing member secured to a rear cross member.

8. A vehicle comprising:

a floor panel having a battery storage recess surrounded by a front cross member, a rear cross member, a left side frame and a right side frame, the rear cross member being opposite to the front cross member with respect to the battery storage recess;

a seat disposed on the floor panel to be located above the battery storage recess; and

the battery unit according to claim 7 , the battery unit being disposed in the battery storage recess such that the front fixing member, the upper frame member, the reinforcing member, and the rear fixing member provide a load path to extend from the front cross member to the rear cross member.