Blanking support device and battery assembly unit

The invention provides a blanking support device and a battery assembly unit and relates to the technical field of batteries. The blanking support device comprises a support component and a supportingplate component, wherein the support component is arranged on the supporting plate component; the supporting plate component is used for driving the support component to move to a roll core; the support component is used for stretching into a diaphragm, so that the diaphragm is attached to the body. According to the blanking support device disclosed by the invention, the supporting plate component drives the support component to move to the body, the support component stretches into the diaphragm to achieve an effect of supporting the diaphragm, so that the diaphragm can be always attached tothe body. During core pressing, the body can be pressed with the diaphragm, so that the yield of the roll core is improved. 本发明提供了种下料支撑装置及电池组装装置，涉及电池技术领域。下料支撑装置包括支撑组件及托板组件，支撑组件设置在托板组件上；托板组件用于带动支撑组件运动至卷芯处；支撑组件用于伸入至隔膜内，使隔膜与本体贴合