Abstract: An electricity storage module according to the present invention includes: a battery case that includes a cooling medium intake port, a cooling medium outlet port, and a cooling flow passage through which a plurality of battery cells housed therein in a parallel array pattern are cooled; and a duct detachably mounted at the cooling medium intake port of the battery case.

Abstract: Disclosed herein is a battery module including a plurality of battery cells mounted in a module case in a stacked state, wherein cooling members are mounted at interfaces between the battery cells, the module case is configured in a structure in which two opposite sides of the module case are open so that corresponding portions of the battery cell stack are exposed outward through the two open opposite sides of the module case, the cooling members are partially exposed outward through the two open opposite sides of the module case, and a coolant flows along the two open opposite sides of the module case while contacting the outwardly exposed portions of the cooling members.

Abstract: A middle or large-sized battery pack case having a plurality of stacked battery cells, a coolant inlet port and a coolant outlet port, and a flow space (‘coolant introduction part’) extending from the coolant inlet port to the battery module and another flow space (‘coolant discharge part’) extending from the battery module to the coolant outlet port, an upper end inside of the coolant introduction part facing the top of a unit cell stack is configured to have an inclined plane inclined from the end opposite to the coolant inlet port toward the coolant inlet port at a positive angle of 3 to 8 degrees to the top of the unit cell stack, and the coolant inlet port is inclined at an angle of 20 to 80 degrees.

Abstract: The present invention relates to a cooling structure of a lithium ion secondary battery system. The cooling structure of a lithium ion secondary battery system according to the present invention provides cooling channels for lithium battery unit cells accommodated by a laterally partitioned arrangement of main frames, each having a heat radiation part and lattice-shaped paths, and partitioning frames, and allows air, blown by a cooling fan, to cool the lithium battery unit cells while passing through the cooling channels and the lattice-shaped paths. Each of the main frames has a pair of passage slots formed in both sides thereof to allow the air blown by the cooling fan to be directly blown to each accommodated lithium battery unit cell, thus forming each secondary cooling channel communicating with the pair of passage slots.

Abstract: A battery cell module includes an enclosure having an electrically non-conductive perimeter and at least one cover formed from a thermally conductive material. The cover has a substantially flat inner surface and sealingly engages the electrically non-conductive perimeter. A plurality of series-interconnected battery cells are placed together into facing contact with each other, an exterior one of the battery cells in facing contact with the inner surface of the cover to facilitate heat transfer therethrough and to provide a desired compression against the series-interconnected battery cells. A first end of the series-interconnected battery cells includes a positive terminal end, and a second end of the series-interconnected battery cells including a negative terminal end, the series-interconnected battery cells the positive and negative terminal ends extending through the electrically non-conductive perimeter.

Abstract: A high-reliability battery pack is described. A battery pack has a battery module unit that is formed from a plurality of arranged battery modules, each of which has a plurality of cells in a case, a cooling air flow passage where a cooling air flow flows, and a gas exhaust duct which forms a gas exhaust passage. The gas exhaust duct extends in an arrangement direction S of the plurality of the battery modules while being contiguous to the battery module unit, and takes in the gas released in the case from the cell, then exhausts the gas from the battery module. The gas exhaust duct is provided with a gas inlet for taking in the gas, which communicates with a gas emission hole formed on a surface of the case, and an air intake that serves to take in the cooling air flow.

Abstract: A battery-cell structure of a battery is constructed to have a resinous spacer 5 with a frame shape surrounding thick central portions between a battery cell 3 arranged at an upper side and a battery cell 4 arranged at a lower side, and ventilation portions 62 and 64 that are provided in the resinous lower case 6 to communicate the exterior with depressed portions 61 of the resinous lower case 6 and have an up- and down symmetrical shape and size. It is constructed so that the battery cell 3 arranged at the upper side and the battery cell 4 arranged at the lower side are put in a vertical direction between the resinous lower case 6, the spacer 5 and the upper case 2.

Abstract: The object of the present invention is to provide an electric construction machine capable of efficiently cooling the battery mounted on the swing structure. To achieve the object, there is provided an electric construction machine in which a battery storage room 11 is formed in the swing structure 3 and a plurality of batteries 231 as electric power sources are arranged in the battery storage room 11, comprising: a battery storage structure 23 storing the batteries 231 and having an air flow channel through which air can flow upward from a lower part of the battery storage structure 23; a covering sheet 26 entirely covering the top and side faces of the battery storage structure 23; and a duct 27 for discharging the air, one end of which is arranged in an upper part of the covering sheet 26.

Abstract: This invention provides a novel battery structure that, in some variations, utilizes a mixed lithium-ion and electron conductor as part of the separator. This layer is non-porous, conducting only lithium ions during operation, and may be structurally free-standing. Alternatively, the layer can be used as a battery electrode in a lithium-ion battery, wherein on the side not exposed to battery electrolyte, a chemical compound is used to regenerate the discharged electrode. This battery structure overcomes critical shortcomings of current lithium-sulfur, lithium-air, and lithium-ion batteries.

Abstract: A battery module includes one or more cell assemblies with a plurality of unit cells, and a housing for mounting the cell assemblies therein and circulating a temperature control cooling medium through the cell assemblies. The cell assemblies are arranged in the longitudinal direction of the housing. A guidance unit is installed in a cooling medium passage formed in the longitudinal direction of the housing, and proceeds along the passage to guide cooling medium flow along the passage toward the cell assemblies.

Abstract: A power supply apparatus that can achieve preferable holding and fixing of components constituting the power supply apparatus and can preferably prevent a liquid short-circuit and a leakage of current due to condensed water. The power supply apparatus includes a power supply unit having a plurality of power supply elements stacked with each other, an upper case and a lower case which house the power supply unit. The power supply further includes an auxiliary fastening portion which is fixed to the lower case and provides a space S between a lower surface of the power supply unit and the lower case, and fastening portions that are placed on the left and right of the power supply unit when viewed in a direction in which the power supply elements are stacked. The fastening portions fastening the power supply unit to the upper case.

Abstract: A rechargeable battery has a plurality of rechargeable battery cells which are situated in an interspaced manner in a rechargeable battery housing filled at least partially with a filler material which encloses the rechargeable battery cells, with a first rechargeable battery cell including a first casing, and a second rechargeable battery cell including a second casing, such that the first casing and the second casing having different wall thicknesses, at least in sections.

Abstract: A battery assembly includes a casing with a casing wall having inner and outer surfaces and an opening therethrough and being shaped such that a coolant chamber is formed within the casing adjacent to the opening. A sleeve including a compressible material is inserted through the opening. The sleeve is shaped such that a sealing portion thereof is positioned over the outer surface of the casing wall. A battery cell is inserted into the sleeve such that at least a portion of the battery cell is positioned within the coolant chamber. A sealing member is coupled to the casing such that a force is applied onto the sealing portion of the sleeve causing the sealing portion of the sleeve to at least partially compress and seal the coolant chamber.

Abstract: A battery module for containing a plurality of battery units, the battery module including first and second end plates facing each other; and a side plate, the side plate being for extending across a side of the battery units, and the side plate having a first end coupled to the first end plate and a second end coupled to the second end plate, wherein a work hardening unit is disposed at the second end of the side plate, the work hardening unit being hardened in such a way that the second end of the side plate is bent.

Abstract: A cooling manifold assembly for use in a battery pack thermal management system is provided. The cooling manifold assembly includes a coolant tube that is interposed between at least a first row of cells and a second row of cells, where the first and second rows of cells are adjacent and preferably offset from one another. A thermal interface layer is overmolded onto the cooling tube, the thermal interface layer including a plurality of pliable fingers that extend away from the cooling tube and are interposed between the cooling tube and the first row of cells, and interposed between the cooling tube and the second row of cells, where the pliable fingers are deflected by, and in thermal contact with, the cells of the first and second rows of cells.

Abstract: The present invention relates to a battery stack arrangement (50) comprising at least one bipolar battery. Each bipolar battery comprises a plurality of battery cell arranged between endplates (22,23). Each battery cell is provided with a seal (24) arranged around the entire periphery of each cell, and a sealing pressure Fseal is applied over the seal to prevent electrolyte leakage between adjacent cells. The battery stack arrangement further comprises a mounting frame (57) including: at least two mounting units (58,59) and at least one tie unit (60, 60?, 60?) holding said mounting units together. The bipolar battery is arranged between the mounting units (58,59), and the battery stack arrangement further comprises at least one spacing element (61) arranged between the mounting units (58,59) and each spacing element (61) abuts against at least one endplate (22,23) and is held in place by said mounting frame (57) to create a stack pressure Fstack, independent of the sealing pressure Fseal.

Abstract: Disclosed herein is a multi-cell battery pack having optimal temperature distribution throughout the battery pack and optimal air flow through the battery pack. Disclosed herein is a battery pack which provides optimal temperature distribution throughout the battery pack, wherein maximum cell temperature (Tmax) and temperature differential amongst all cells in the battery pack (?Tcell) are optimized for efficient thermal management providing safety, improved performance and extended life of the battery pack and electrochemical cells. Also disclosed herein is a battery pack which provides optimal flow through the battery pack and minimal pressure drop (?P) throughout the battery pack.

Abstract: An electricity storage system comprises a plurality of battery cells in which battery elements are accommodated in angular metal battery cases, wherein the plurality of battery cells are connected together electrically and are disposed in such a manner as to form spaces between the metal battery cells, and wherein the metal battery cell comprises an angular metallic housing on an external surface of which irregularities are formed and a resin portion which is injection molded integrally on the external surface of the metallic housing.

Abstract: A device for cooling a vehicle battery is provided that includes a plurality of electric storage elements, and a cooling body being flowed through by a coolant fluid, wherein at least one of the electric storage elements is fixed at least on one cooling plate in thermal contact, and wherein the cooling plate is connected to the cooling body so that heat may be transferred from the storage element to the fluid, wherein the cooling plate has a planar mechanical connection to the cooling body.

Abstract: Disclosed herein is a battery module including a plurality of battery cells mounted in a module case in a stacked state, wherein cooling members are mounted at interfaces between the battery cells, the module case is configured in a structure in which two opposite sides of the module case are open so that corresponding portions of the battery cell stack are exposed outward through the two open opposite sides of the module case, the cooling members are partially exposed outward through the two open opposite sides of the module case, and a coolant flows along the two open opposite sides of the module case while contacting the outwardly exposed portions of the cooling members.

Abstract: Cooling air intake port (52), cooling air exhaust port (55), and securing walls (86, 87), which contact and secure the side surfaces of one or more battery cells (72), may be defined within two battery pack housing halves (50, 80). When battery pack (99) is assembled, at least one cooling air passage (91, 92) is defined by the side surfaces of the battery cells, the interior surface of the battery pack housing, and the securing walls. The cooling air passage connects the cooling air intake port to the cooling air exhaust port. By forcing cooling air through the cooling air passage, the battery cells can be effectively and efficiently cooled.

Abstract: A battery unit includes a casing, bipolar batteries as a plurality of stacked type batteries housed in the casing, and a plug. The bipolar battery is formed by stacking a plurality of battery elements each having sheet electrodes on opposite sides of an electrolyte, and has collectors. The plug is detachably inserted between the bipolar batteries, and electrically connects bipolar batteries.

Abstract: Disclosed is a cooling apparatus of a battery module, which can minimize temperature deviation between a plurality of secondary batteries constituting the battery module. The cooling apparatus of a battery module includes a housing including an accommodation part accommodating the battery module, and an air passage through which outside air passes, a first heat transfer member fixed to the housing and having a surface exposed to the air passage, and a second heat transfer member disposed between the battery module and the first heat transfer member. The second heat transfer member may contact a portion in the battery module having relatively high temperature.

Abstract: A secondary battery module includes a row of cells arranged with a gap therebetween, a lid covering one side of the cell row, inner ribs formed on the inner surface of the lid and each determining the gap between the adjacent cells, an outer rim extending along the outer periphery of the lid and cooperating with the corresponding inner ribs to hold the cells located at the opposite ends of the cell row, and a plurality of busbars used to electrically connect the cells in series. The cells and the lid are mechanically connected together by means of the busbars.

Abstract: A pressurized underground enclosure includes a battery venting system having a battery within a battery box in a sealed enclosure. A first pipe is fluidly connected to the battery box and an ambient atmosphere and includes a vacuum generator for reducing a pressure in the battery box. A second pipe is fluidly connected to the battery box and the ambient atmosphere and includes a one-way valve permitting airflow to the battery box and precluding airflow from the battery box to the ambient atmosphere. The enclosure includes a scissors lift including scissor linkage units having arms pivotally connected at terminal ends and at central positions. The scissor linkage units are moveable from a retracted to an extended position by pneumatic cylinders. The internal pressurization of the enclosure is selectively released and locking mechanisms are retracted before a rack of the scissors lift is extended through an opening of the enclosure.

Abstract: A method and apparatus is provided in which a pre-formed secondary can comprised of one or more layers of a high yield strength material is positioned around the pre-formed battery case, the pre-formed secondary can inhibiting the flow of hot, pressurized gas from within the battery through perforations formed in the battery casing during a thermal runaway event.

Abstract: A method of assembling a battery assembly includes forming battery packs, each pack including battery cells and cooling passages extending along a length of the pack, connecting terminals of each pack to a dc source and charging each pack to a desired state of charge, installing battery packs on a tray located on an automatically guided cart, using the cart to carry the battery assembly to locations where method steps are performed including performing testing for fluid leaks in a cooling circuit comprising interconnected passages of each pack on the tray and installing electric circuits in the assembly.

Abstract: A battery pack including a support frame. The support frame includes a plurality of recesses for receiving a plurality of battery cells, a first vent, a second vent, a first peripheral support section, a second peripheral support section, and an air passage. The first vent is located on a first distal end of the support frame, the second vent is located on a second distal end of the support frame, and the air passage is located between the first vent and the second vent. The first and second peripheral support sections space apart and securely hold the plurality of battery cells within the battery pack.

Abstract: It is aimed to provide a battery pack capable of securing safety by preventing A battery contained in the battery pack from entering a burning state even if the battery releases high-temperature gas in an abnormal state. An exhaust duct 1C for permitting the flow of gas released from the battery is provided and the gas is exhausted to the outside after reducing the temperature thereof in the exhaust duct 1C. A flow passage area of the exhaust duct 1C is in the range of not less than 0.5 mm2 and not more than 15 mm2 per 1 Ah of the battery capacity. The exhaust duct 1C is provided with a gas cooling portion 1L and a spark trapping portion 1M.

Abstract: An end-to-end cell connection system for a battery assembly uses a conductive interconnector with an inner portion welded to an end of one cell, a standoff portion contiguous with the ring portion, tabs extending from the standoff portion, with the tabs welded to an end of another cell. By placing an insulator between the interconnector and the one cell, an electrical short is prevented in the event that a longitudinally coupled cell group is jostled. At the cell connections, there is a recess. To hold the cell group in place, the housing has a tab extending into the recess. The tab is at the center so that any dimensional variations are accommodated on each side of the tab. The interconnector also may include a receptacle for a thermistor to obtain a measure of battery assembly temperature. Diverter ribs may be provided in the housing to distribute flow to all cells.

Abstract: An electricity generation module including: a plurality of basic electrochemical cells; plates for supporting the basic cells, the support plates forming spacers for two consecutive basic cells; and a loading mechanism configured to maintain the relative position of the basic cells and the support plates by pressure.

Abstract: A method and apparatus is provided in which a pre-formed sleeve or pre-formed secondary can comprised of one or more layers of a high yield strength material is positioned around the pre-formed battery case, the pre-formed sleeve/secondary can inhibiting the flow of hot, pressurized gas from within the battery through perforations formed in the battery casing during a thermal runaway event.

Abstract: A prismatic sealed rechargeable battery includes a substantially prismatic battery case that accommodates an electrode plate assembly and an electrolyte solution. The battery case is formed of metal. On a side face of the battery case, a thin plate is provided which has a plurality of protruding portions formed in parallel at appropriate intervals. The protruding portion and the side face form spaces opened at both ends therebetween. The thin plate is bonded to the side face of the battery case by making flat portions between the protruding portions into surface-contact with the side face, thereby improving cooling capability of the battery.

Abstract: Disclosed herein is a battery pack case in which a battery module (32) having a plurality of stacked unit cells (30) is mounted. The battery pack case is provided at an upper part and a lower part thereof with a coolant inlet port (10?) and a coolant outlet port (20?), respectively. The coolant inlet port (10?) and the coolant outlet port (20?) are directed in opposite directions. The battery pack case is further provided with a coolant introduction part (40?) and a coolant discharge part. An upper end inside part of the coolant introduction part (40?) is configured in a structure in which an incline plane starting from an end opposite to the coolant inlet port (10?) has an inclination increasing toward the coolant inlet port (10?) with respect to the top of the cell stack.

Abstract: A liquid cooling manifold assembly for use in the thermal management system of a battery pack is provided. The liquid cooling manifold assembly includes a coolant channel portion through which the coolant channels run, and a dual layer thermal interface interposed between the coolant channel portion and the cells of the battery pack. The outer material layer of the dual layer thermal interface is comprised of an electrically non-conductive, high dielectric material that is preferably tear resistant, deformable and has a high tensile strength and a relatively low surface friction. The inner material layer of the dual layer thermal interface is comprised of a highly compressible material.

Abstract: Disclosed herein are a secondary battery including an electrode assembly for charging and discharging mounted in a sheathing member including a metal layer and a resin layer, wherein the secondary battery further includes a secondary battery having a molding part of a predetermined thickness at least partially formed at the outside of a sheathing member, preferably, at a sealing region of the sheathing member, and a medium- or large-sized battery pack including the same. The molding part is formed at the outside of the sheathing member of the secondary battery. Consequently, the secondary battery according to the present invention has high mechanical strength, and therefore, it is possible to construct a battery pack without using addition members, such as cartridges. When the molding part is formed at the sealing region, which is weak, the molding part increases the mechanical strength and the sealing force of the secondary battery.

Abstract: A battery pack includes a housing having at least one coupling recess, a peripheral portion around the at least one coupling recess, and a plurality of cooling passages extending in at least one direction of the at least one coupling recess and within the peripheral portion, and a battery cell housed in the at least one coupling recess.

Abstract: Disclosed is a cartridge-type lithium ion polymer battery pack including: at least two lithium ion polymer batteries in which adjacent electrode tabs are connected to each other so as to form a predetermined series circuit with a desired instrument; and an upper plate and a lower plate disposed at the top and the bottom of the whole lithium ion polymer batteries, respectively, and coupled to each other so that each lithium ion polymer battery is partially covered with them. Multiple layers of the battery packs are laminated and fixed with ease so as to conform to the electric power requirement for a desired instrument.

Abstract: A battery system has a battery block with a plurality of battery cells that are rectangular batteries stacked with intervening insulating separators, and that battery block is held by fastening components. The fastening components are provided with a pair of endplates disposed at the ends of the stacked battery cells, and metal bands on both sides of the battery block connected at both ends to the endplates. An insulating separator has an insulating plate section, which intervenes between adjacent battery cells, and insulating walls, which cover both battery cell side-walls, formed from plastic as a single-piece. In this battery system, insulating plate sections are sandwiched between battery cells, and the insulating walls are disposed between battery cell outer side-walls and metal bands to insulate the battery cells from the metal bands.

Abstract: The invention provides a method of manufacturing a power storage device which enables facilitation of manufacturing of the power storage device while a plurality of terminal portions are prevented from overlapping one another when viewed from a stacking direction. The method of manufacturing the power storage device including a plurality of electrode elements stacked with electrolyte layers interposed between them, the method includes a first step of forming the electrode element which has a generally rotationally symmetric outer shape when viewed from a stacking direction and includes a terminal portion protruding in an outward direction of the power storage device in an area of the outer shape, and a second step of stacking the plurality of electrode elements formed in the first step with the electrolyte layers interposed between them at varying angles in a stacking plane such that the terminal portions do not overlap one another when viewed from the stacking direction.

Abstract: A prismatic sealed rechargeable battery includes a substantially prismatic battery case that accommodates an electrode plate assembly and an electrolyte solution. The battery case is formed of metal. On a side face of the battery case, a thin plate is provided which has a plurality of protruding portions formed in parallel at appropriate intervals. The protruding portion and the side face form spaces opened at both ends therebetween. The thin plate is bonded to the side face of the battery case by making flat portions between the protruding portions into surface-contact with the side face, thereby improving cooling capability of the battery.

Abstract: A battery pack assembly comprising a plurality of battery packs each including a plurality of cells and at least one metering plate for metering the quantity of air flowing respectively through each of the air paths of the battery packs. An inlet metering plate is disposed upstream of the battery packs to meter the uneven flow of cooling air generated by the inlet manifold. The inlet metering plate utilizes a plurality of apertures, which can vary in size and shape, to produce equal streams of cooling air to cool all the battery packs to a substantially uniform temperature. An outlet metering plate can be disposed downstream of the battery packs to meter the flow of outgoing cooling air through the channels of the upper cylindrical sections to produce equal air flow around all of the cells in a stack to cool all of the cells to a substantially uniform temperature.

Abstract: Disclosed herein are a frame member including an upper frame member having one major surface to which a protection circuit module (PCM) is mounted, and a lower frame member coupled with the upper frame member, the upper and lower frame members being provided at opposite major surfaces thereof with semi-cylindrical battery receiving parts corresponding to outer surfaces of the cylindrical unit cells mounted between the upper and lower frame members, a spacer provided at opposite major surfaces of a rectangular frame with pluralities of semi-cylindrical battery receiving parts corresponding to outer surfaces of the cylindrical batteries, the battery receiving parts being partially open such that the battery receiving parts communicate with neighboring battery receiving parts on the same plane, and a battery pack including the frame member and the spacer.

Abstract: Disclosed herein are a frame member including an upper frame member having one major surface to which a protection circuit module (PCM) is mounted, and a lower frame member coupled with the upper frame member, the upper and lower frame members being provided at opposite major surfaces thereof with semi-cylindrical battery receiving parts corresponding to outer surfaces of the cylindrical unit cells mounted between the upper and lower frame members, a spacer provided at opposite major surfaces of a rectangular frame with pluralities of semi-cylindrical battery receiving parts corresponding to outer surfaces of the cylindrical batteries, the battery receiving parts being partially open such that the battery receiving parts communicate with neighboring battery receiving parts on the same plane, and a battery pack including the frame member and the spacer.

Abstract: Cooling air intake port (52), cooling air exhaust port (55), and securing walls (86, 87), which contact and secure the side surfaces of one or more battery cells (72), may be defined within two battery pack housing halves (50, 80). When battery pack (99) is assembled, at least one cooling air passage (91, 92) is defined by the side surfaces of the battery cells, the interior surface of the battery pack housing, and the securing walls. The cooling air passage connects the cooling air intake port to the cooling air exhaust port. Further, the securing walls isolate or physically separate the cooling air passage from battery terminals (72a, 72b). By forcing cooling air through the cooling air passage, the battery cells can be effectively and efficiently cooled.

Abstract: A battery cover assembly (10) including a body (11), a first cover (12) and a second cover (13) is provided. The body includes a battery receptacle (115). Both of the first cover and the second cover respectively include two sidewalls (123, 124, 133, 134) removably mounted to the body and a top wall (121, 131) connected to the pair of sidewalls. The top walls of the first cover and the second cover protrude out from the body while the first cover and the second cover are assembled to the body. Both of the first cover and the second cover are configured to be removably mounted to the body. The first cover and the second cover are engageable with each other so as to cover the battery receptacle.

Abstract: A pouch type battery includes a pouch case having a front region, a rear region, first and second side regions, and a cover, wherein the first side region connects the front region to the rear region at a first side of the battery, and the second side region connects the front region to the rear region at a second side of the battery, the first and second sides being opposite to one another, the rear region has a recess therein to accommodate an electrode assembly, and two extending portions extend from first and second sides of the recess, the two extending portions being wrapped around to form the first and second side regions and the front region, inward-facing surfaces of the two extending portions being bonded to each other to form a first seal in the front region, at least one of the extending portions extending beyond the first seal and being further wrapped around to form the cover, the cover extending at least partially across the front region.

Abstract: An electric power source containing a plurality of batteries stacked in two or more tiers in a battery case, which is provided with an intermediary duct between a first sub holder case and a second sub holder case. A first outer duct is located outside the first sub holder case and a second outer duct is located outside the second sub holder case. The power source is so designed that cooling air is blown to the intermediary duct, the holder case and the outer duct, thus cooling the batteries in the holder case. Further, the power source has a partition disposed inside the intermediary duct, with a first intermediary sub duct being connected to the first sub holder case and a second intermediary duct being connected to the second sub holder case.

Abstract: A first row of batteries and a second row of batteries both consisting of the same number of cylindrical batteries (2) arranged in parallel are held at both axial ends using holder frames (3). The holder frame (3) is formed as a rectangular parallelepiped by detachably coupling together an inner frame (4) and two outer frames (7, 8). On both lateral sides of the inner frame (4) and on the sides of the two outer frames (7, 8) opposite the inner frame (4) are provided the same number of holding parts (4a, 7b, 8b) as the rows of batteries, the holding parts being semi-circular cut-outs in which halves of the cylindrical batteries (2) can fit. Each two adjacent cylindrical batteries (2) are electrically interconnected via inter-battery connection plates (9).

Abstract: In an assembled battery used as a power source of a vehicle, a negative electrode collector plate and a positive electrode collector plate are arranged at every two bipolar secondary batteries adjacent in a stacking direction among a plurality of bipolar electrodes. The negative electrode collector plate and the positive electrode collector plate also function as heat radiating members, as a cooling medium is caused to flow therein. It becomes unnecessary to connect a cooling tab to the positive electrode collector plate (or the negative electrode collector plate) to cool the assembled battery and, therefore, no portion protrudes from the positive electrode collector plate (or the negative electrode collector plate) of the assembled battery. Thus, the inside of assembled battery can be cooled while reducing the size of the assembled battery.