The invention discloses a roller type
energy storage device which is composed of a roller body, a motor rotor and a
nickel ring. The roller body is composed of a roller body, a long roller neck and a short roller neck. The motor rotor is mounted on the long roll neck in an interference manner; the
nickel ring is mounted on the motor rotor in an interference manner; the length-
diameter ratio of the roller body is 1.5-1.8; the
diameter ratio of the roller body to the long roller neck to the short roller neck is 1: (0.1-0.3): (0.08-0.12); the manufacturing method of the roller type
energy storage device comprises the steps that S1, the roller body is manufactured; and S2, mounting the motor rotor and the
nickel ring in an interference manner. According to the
energy storage device, a roller type structure is innovatively adopted to replace an existing disc type
flywheel structure, meanwhile, the motor rotor is installed on the roller neck in an interference mode, and therefore even under the same material strength, due to the fact that the weight of a roller body is higher, the motor rotor on the roller neck can obtain the higher rotating speed, better rotating uniformity is achieved, and the energy
storage effect is better. And finally, more
stored energy can be obtained, and the device is suitable for higher-end application occasions.