Abstract: The present invention provides to a battery module which is excellent in cooling performance of a battery and is improved in assembling easiness at low cast. A battery module 3 accommodates assembled battery blocks 20 arranged in series in an exterior case formed in an approximately hexahedral shape in parallel, each assembled battery block 20 including six assembled battery units electrically connected in series and each assembled battery unit including four cylindrical unit cells arrange such that their polarities are alternating. An exterior case is formed by connecting a lower lid 22 having a front face, a bottom face, and a back face and an upper lid 41 having a left side face, an upper face, and a right side face. End portions of the left side face, the upper face, and the right side face of the upper lid are drawn at the sides of the front face and the back face of the lower lid.

Abstract: The present invention provides an assembled battery with reduced weight and high reliability that can achieve improvement of assembling easiness at low cost. An assembled battery is provided with a frame holding a plurality of unit cells 14 having positive polarity at one end and negative polarity at the other end. The frame is composed of two outer frames 2 having the same shape and an inner frame 3. The unit cells 14 constituting an assembled battery 1 are disposed on both sides of the inner frame 3, and one outer frame 2 and the other outer frame 2 are disposed such that the unit cells are sandwiched between the former outer frame 2 and the inner frame 3 and between the latter outer frame 2 and the inner frame 3. The two outer frames 2 are joined to the inner frame 3 through side face coupling portions 23 and vertical coupling portions 24.

Abstract: The present invention provides a secondary battery module which is excellent in vibration resistance. A battery module 20 has assembled battery blocks 11 each constituted by screw-fixing the assembled batteries 2 to the block bases 3, 4 supporting a lower portion thereof and the two block reinforcing plates 5 supporting an upper portion thereof, the six assembled batteries 2 are sandwiched by and fixed firmly to the block bases 3, 4 and the block reinforcing plates 5. The assembled batteries 2 do not move freely even if vibration is added to the battery module 20. Because the elastic sheet 9 is laid between the block bases 3, 4 and the assembled batteries 2, since a space derived due to variance in size accuracy of frames 12 which hold and fix the unit cells 11 and derived due to variance in size accuracy of the block bases 3, 4 can be removed, and vibration resistance can be enhanced.

Abstract: The present invention provides an assembled battery with reduced weight and high reliability that can achieve improvement of assembling easiness at low cost. An assembled battery is provided with a frame holding a plurality of unit cells 14 having positive polarity at one end and negative polarity at the other end. The frame is composed of two outer frames 2 having the same shape and an inner frame 3. The unit cells 14 constituting an assembled battery 1 are disposed on both sides of the inner frame 3, and one outer frame 2 and the other outer frame 2 are disposed such that the unit cells are sandwiched between the former outer frame 2 and the inner frame 3 and between the latter outer frame 2 and the inner frame 3. The two outer frames 2 are joined to the inner frame 3 through side face coupling portions 23 and vertical coupling portions 24.

Abstract: The present invention provides a secondary battery module which is excellent in vibration resistance. A battery module 20 has assembled battery blocks 11 each constituted by screw-fixing the assembled batteries 2 to the block bases 3, 4 supporting a lower portion thereof and the two block reinforcing plates 5 supporting an upper portion thereof, the six assembled batteries 2 are sandwiched by and fixed firmly to the block bases 3, 4 and the block reinforcing plates 5. The assembled batteries 2 do not move freely even if vibration is added to the battery module 20. Because the elastic sheet 9 is laid between the block bases 3, 4 and the assembled batteries 2, since a space derived due to variance in size accuracy of frames 12 which hold and fix the unit cells 11 and derived due to variance in size accuracy of the block bases 3, 4 can be removed, and vibration resistance can be enhanced.

Abstract: The present invention provides to a battery module which is excellent in cooling performance of a battery and is improved in assembling easiness at low cast. A battery module 3 accommodates assembled battery blocks 20 arranged in series in an exterior case formed in an approximately hexahedral shape in parallel, each assembled battery block 20 including six assembled battery units electrically connected in series and each assembled battery unit including four cylindrical unit cells arrange such that their polarities are alternating. An exterior case is formed by connecting a lower lid 22 having a front face, a bottom face, and a back face and an upper lid 41 having a left side face, an upper face, and a right side face. End portions of the left side face, the upper face, and the right side face of the upper lid are drawn at the sides of the front face and the back face of the lower lid.

Abstract: The present invention provides an assembled battery with reduced weight and high reliability that can achieve improvement of assembling easiness at low cost. An assembled battery is provided with a frame holding a plurality of unit cells 14 having positive polarity at one end and negative polarity at the other end. The frame is composed of two outer frames 2 having the same shape and an inner frame 3. The unit cells 14 constituting an assembled battery 1 are disposed on both sides of the inner frame 3, and one outer frame 2 and the other outer frame 2 are disposed such that the unit cells are sandwiched between the former outer frame 2 and the inner frame 3 and between the latter outer frame 2 and the inner frame 3. The two outer frames 2 are joined to the inner frame 3 through side face coupling portions 23 and vertical coupling portions 24.

Abstract: The present invention provides a battery structure for an electric vehicle which has an excellent cooling performance, which can fix battery cells securely, and which can improve work efficiency in assembling. A battery module 1 is provided with a battery case main body comprising an upper cover 4, a middle cover 5 and a lower cover 6, and two side covers covering exposed side surfaces of battery cells held in the battery case main body in a horizontal state. The upper cover 4 and the lower cover 6 are respectively formed with discharging side ventilating holes 14a and introducing side ventilating holes 14b which allow cooling air to flow upwardly and total aperture area of the discharging side ventilating holes 14a is set to 1/2 of total aperture area of the introducing side ventilating holes 14b.