Test fixture and test device

The utility model discloses a test fixture and a test device. The test fixture is used for long-term cycle test of a single battery and comprises a first plate, a second plate and a connecting piece, the first plate and the second plate are both fixedly connected with the connecting piece and are oppositely arranged, the surface, facing the second plate, of the first plate is a first surface, and the surface, facing the first plate, of the second plate is a second surface; limiting parts are arranged on the first face and the second face, a single battery can be contained between the first plate and the second plate, and the limiting parts at least can abut against the bottom face of the single battery. According to the test fixture, the single battery can be kept between the first plate and the second plate under the condition that pressure is not applied to the large surface of the single battery, so that the stress of the single battery is closer to the actual condition, the result of the test device is fu