The present application relates to a housing of battery module and a battery module. The housing includes a lower shell, an upper cover and two output components, the lower shell includes a lower shell body and at least one connecting member; the lower shell body is separated into accommodating chambers for accommodating bare cell; an installation site for connecting member is provided in each accommodating chamber; every two adjacent accommodating chambers are provided with one connecting member between and penetrating through the every two adjacent accommodating chambers; an installation site for output component and an output hole are provided in each of a first one and a last one of the plurality of accommodation chambers; the two output components are sealedly connected with two output holes, respectively. The battery module includes bare cells and the housing.