POWER SUPPLY MODULE AND POWER STORAGE ELEMENT

PROBLEM TO BE SOLVED: To provide a power supply module and a power storage element capable of suppressing looseness of the power storage element and fixing the power storage element without considering an individual difference of the power storage element.SOLUTION: A power supply module comprises: a spacer 4 including an engagement convex part 40; and a battery 3 including an outer package 30, and an engagement recessed part 35 provided on an outer surface 33 of the outer package and abutting on the engagement convex part of the spacer 4. When the engagement convex part is press-fitted into the engagement recessed part from above, the engagement convex part is engaged with the engagement recessed part in a plastic deformation state. As a result, the engagement convex part of the spacer after press-fitting is tightly adhered to the engagement recessed part by its self-restoring force. 【課題】蓄電素子の個体差を考慮することなく蓄電素子のがたつきを抑制して固定することが可能な電源モジュールと蓄電素子を提供する。【解決手段】電源モジュールは、係合凸部４０を含むスペーサ４と、外装体３０と、外装体の外面３３に設けられ、スペーサ４の係合凸部と当接する係合凹部３５とを含む電池３とを備える。係合凸部を上方から係合凹部に圧入すると係合凸部は、塑性変形した状態で係合凹部に係合する。この結果、圧入後スペーサの係合凸部は、自らの復元力により、係合凹部に密着する。【選択図】図３