A battery module with enhanced stability against fire and explosion. The battery module includes a cell assembly having a plurality of secondary batteries, a lower case having an open top and having an accommodation space, an upper case coupled to the lower case to cover the open top of the lower case and having a connection hole perforated to communicate with the accommodation space; an upper cover coupled to the upper case to cover an upper portion of the upper case and configured to form a buffer space spaced apart from the upper case, the upper cover having a discharge hole perforated so that the buffer space communicates with the outside; and at least one partition member extending in a horizontal direction inside the buffer space to form a moving passage extending from the connection hole to the discharge hole and configured to have an adjustable extension length.

A method is for replacing a rechargeable battery that is considered as an unsatisfactory rechargeable battery that needs replacing in an assembled battery in which rechargeable batteries are stacked and restrained in a row and electrically connected in series or in parallel. The method includes removing of finding at least one of the rechargeable batteries to be an unsatisfactory rechargeable battery in the assembled battery and removing the unsatisfactory rechargeable battery, and installing a satisfactory rechargeable battery, which has little deterioration, on at least one end of the row of the rechargeable batteries, in a row direction, in the assembled battery from which the unsatisfactory rechargeable battery has been removed.

A battery module includes a battery cell assembly including at least one battery cell, a base plate configured to support a lower side of the battery cell assembly, and a pressing pulley elastically connected to the base plate and configured to cover an upper side of the battery cell assembly, the pressing pulley being elastically deformable in a vertical direction of the battery cell assembly according to cell swelling of the battery cell assembly.

A stack has an end surface located at an end portion in a first direction. A restraint portion includes a first member, a second member, and an adhesive agent layer. The first member has a main body portion and a protrusion portion. The protrusion portion protrudes from the main body portion in a second direction intersecting the first direction. The second member is provided with a recess portion that receives at least a portion of the protrusion portion in the second direction. The adhesive agent layer adheres the first member and the second member to each other. One of the first member and the second member is provided to face the end surface of the stack. The protrusion portion and the recess portion are engaged with each other with the adhesive agent layer being interposed between the protrusion portion and the recess portion.

A stack has an end surface located at an end portion in a first direction. A restraint portion includes a first member, a second member, and an adhesive agent layer. The first member has a main body portion and a protrusion portion. The protrusion portion protrudes from the main body portion in a second direction intersecting the first direction. The second member is provided with a recess portion that receives at least a portion of the protrusion portion in the second direction. The adhesive agent layer adheres the first member and the second member to each other. One of the first member and the second member is provided to face the end surface of the stack. The protrusion portion and the recess portion are engaged with each other with the adhesive agent layer being interposed between the protrusion portion and the recess portion.

A battery module and a method of assembling a battery module are provided. The method includes selectively applying a light-cure adhesive to recesses in a first side of a carrier layer and inserting battery cells into respective recesses. The method further includes exposing the first side of the carrier layer to light to at least partially cure the light-cure adhesive with the carrier layer in a first orientation, moving the carrier layer into a second orientation, and exposing a second opposite side of the carrier layer to light to fully cure the light-cure adhesive. The recesses may include a sidewall having crush points spaced apart along the sidewall and a bottom portion having an opening between a pair of crush points, where adhesive is not disposed between the pair of crush points.

A power supply device disposes an end plate at each end of a battery stack in a stacked direction of the battery stack, and couples a binding bar to the end plate, so as to fix battery cells. The binding bar includes a plate-shaped bar that extends in the stacked direction, and an engagement block that is provided on a plate-shaped bar and protrudes toward an outer peripheral face of the end plate. The engagement block is inserted into a fixing hole provided in the plate-shaped bar and fixed to an inner peripheral face of the fixing hole. The end plate includes a fitting part, to which the engagement block is guided, on the outer peripheral face of the end plate, and includes a stopper that is disposed closer to the battery stack with respect to the fitting part and abuts the engagement block.

A power supply device disposes an end plate at each end of a battery stack in a stacked direction of the battery stack, and couples a binding bar to the end plate, so as to fix battery cells. The binding bar includes a plate-shaped bar that extends in the stacked direction, and an engagement block that is provided on a plate-shaped bar and protrudes toward an outer peripheral face of the end plate. The engagement block is inserted into a fixing hole provided in the plate-shaped bar and fixed to an inner peripheral face of the fixing hole. The end plate includes a fitting part, to which the engagement block is guided, on the outer peripheral face of the end plate, and includes a stopper that is disposed closer to the battery stack with respect to the fitting part and abuts the engagement block.

A battery module for a system for the storage of electrical energy for an electric drive vehicle. The battery module has: a group of chemical batteries arranged parallel to and beside one another; at least two connection plates which rest against opposite ends of the group of chemical batteries so as to electrically connect the poles of the chemical batteries to one another; two support bodies coupled to opposite ends of the group of chemical batteries so as to provide the chemical batteries with a stable mechanical support; two lids, which are coupled to the support bodies so as to create respective collecting chambers having at least one draining opening; and at least two tie rods, which are arranged on opposite sides of the battery module and tie together the lids and the support bodies in a packed manner.

A power battery pack, includes first housing includes a first main portion having a first fixing surface and a first connection surface; a number of first receiving portions extending upwardly from the first fixing surface; a number of first limiting portions extending upwardly from the first connection surface; a second housing comprising a second main portion having a second fixing surface and a second connection surface; a number of second receiving portions extending upwardly from the second fixing surface; a number of second limiting portions extending upwardly from the second connection surface; a number of single batteries; two ends of each single battery being received in a first receiving portion and a respective second receiving portion; two electrode board assemblies respectively received in a first limiting portion; and a number of intermediate board assemblies each received in a first limiting portion or a second limiting portion.