Electric storage apparatus

1. An electric storage apparatus, comprising:

an electric storage device;

a circuit module that, in a plan view, includes a side; and

an enclosure that includes an enclosure body for housing the electric storage device and an inner cover attached to an open surface of the enclosure body,

wherein one of the inner cover and the circuit module includes an engaging portion formed thereon,

wherein another of the inner cover and the circuit module includes an engaged portion,

wherein the engaging portion is for engagement with the engaged portion,

wherein a number of the engaging portion is different from a number of the engaged portion, and

wherein, in a stacking direction of the circuit module and the inner cover over the electric storage device, the inner cover is located between the electric storage device and the circuit module such that the electric storage device and the circuit module contact opposing surfaces of the inner cover.

2. The electric storage apparatus according to claim 1 , wherein the circuit module includes a circuit and a case for housing the circuit,

wherein the enclosure further includes an outer cover for covering the inner cover,

wherein one of the inner cover and the case includes the engaging portion, and

wherein another of the inner cover and the case includes the engaged portion.

3. The electric storage apparatus according to claim 1 , wherein the circuit module includes a circuit,

wherein the enclosure further includes an outer cover for covering the inner cover,

wherein one of the inner cover and the circuit includes the engaging portion, and

wherein another one of the inner cover and the circuit includes the engaged portion.

4. The electric storage apparatus according to claim 1 , wherein the inner cover includes a beam portion,

wherein the circuit module includes the engaging portion, and

wherein the beam portion includes the engaged portion.

5. The electric storage apparatus according to claim 1 , wherein the electric storage device includes an external terminal,

wherein the inner cover includes a beam portion, and

wherein, with respect to an upper surface of the inner cover, a height of the circuit module is no greater than a height of the external terminal or a height of the beam portion, whichever is higher.

6. The electric storage apparatus according to claim 1 , wherein the electric storage device includes an external terminal,

wherein the inner cover includes a beam portion, and

wherein an outer cover includes an inserted-through portion through which, with respect to an upper surface of the inner cover, one portion of the circuit module greater in height than the external terminal or the beam portion, whichever is higher, is inserted.

7. The electric storage apparatus according to claim 1 , wherein the inner cover includes the engaging portion,

wherein the circuit module includes the engaged portion, and

wherein the inner cover comprises a plurality of engaging portions so as to enable the mounting position of the circuit module to be changed with respect to the inner cover.

8. The electric storage apparatus according to claim 1 , wherein the inner cover includes the engaged portion,

wherein the circuit module includes the engaging portion, and

wherein the inner cover comprises a plurality of engaged portions so as to enable the mounting position of the circuit module to be changed with respect to the inner cover.

9. The electric storage apparatus according to claim 1 , wherein the circuit module includes a circuit and a case for housing the circuit, and

wherein the case is separable.

10. The electric storage apparatus according to claim 1 , wherein the engaging portion comprises an elastic piece having flexibility.

11. The electric storage apparatus according to claim 10 , wherein the engaged portion includes a concave portion, and

wherein the elastic piece includes a convex portion to be engaged into the concave portion.

12. The electric storage apparatus according to claim 1 , wherein the electric storage device includes an external terminal,

wherein the circuit module includes an input connector, and

wherein the input connector and the external terminal are electrically connected to each other.

13. The electric storage apparatus according to claim 1 , wherein the inner cover includes a beam portion, the beam portion being provided on a first surface of the opposing surfaces of the inner cover, the first surface being opposite to a second surface of the opposing surfaces of the inner cover, the second surface facing the electric storage device,

wherein the circuit module includes the engaging portion, and

wherein the beam portion includes the engaged portion.

14. The electric storage apparatus according to claim 1 , wherein the engaging portion is directly snap-fitted with the engaged portion in a direction orthogonal to the side of the circuit module.

15. The electric storage apparatus according to claim 14 , wherein the engaging portion is provided with a finger grip portion such that the engaging portion and the engaged portion are engageable with and disengageable from each other.

16. An electric storage apparatus, comprising:

a plurality of electric storage devices, each of the plurality of electric storage devices including a pair of external terminals arranged in a first direction with an interval;

a circuit module that, in a plan view, includes a side extending in a second direction that intersects with the first direction; and

an enclosure that includes an enclosure body for housing the plurality of electric storage devices and an inner cover attached to an open surface of the enclosure body,

wherein one of the inner cover and the circuit module includes an engaging portion formed thereon,

wherein another of the inner cover and the circuit module includes an engaged portion,

wherein a number of the engaging portion is different from the number of the engaged portion,

wherein the engaging portion is directly snap-fitted with the engaged portion in a direction orthogonal to the side of the circuit module,

wherein the plurality of electric storage devices are arranged along the second direction and the circuit module is disposed between the pair of external terminals of the plurality of electric storage devices in the first direction, and

wherein, in a stacking direction of the circuit module and the inner cover over the electric storage device, the inner cover is located between the plurality of electric storage devices and the circuit module such that the plurality of electric storage devices and the circuit module contact opposing surfaces of the inner cover.

17. The electric storage apparatus according to claim 16 , wherein the engaging portion comprises an elastic piece having flexibility.

18. The electric storage apparatus according to claim 16 , wherein the inner cover includes a beam portion, the beam portion being provided on a first surface of the opposing surfaces of the inner cover, the first surface being opposite to a second surface of the opposing surfaces of the inner cover, the second surface facing the electric storage device,

wherein the circuit module includes the engaging portion, and

wherein the beam portion includes the engaged portion.

19. The electric storage apparatus according to claim 16 , wherein the engaging portion is provided with a finger grip portion such that the engaging portion and the engaged portion are engageable with and disengageable from each other.