摘要:
In a sealed rechargeable battery module wherein a safety vent device (13) is provided to release the internal pressure of the battery when the pressure has reached a predetermined value, the safety vent device comprises a valve case (25) formed with a vent (26) and a sealing protrusion (27) surrounding this vent, a valve body (31) inserted in the valve case including a sealing portion (28) that is brought in tight contact with the sealing protrusion, a rigid holder (29) for supporting the sealing portion, and a resilient portion (30) for pressing the rigid holder toward the vent, and a valve cover (32) formed with apertures (33) for closing the upper open end of the valve case in a state wherein the resilient portion of the valve body is compressed.
摘要:
A battery assembly includes a plurality of battery modules electrically connected together, each battery module acting as a secondary battery and including an electrode group, an electrolyte, a container for housing the electrode group and the electrolyte, and a safety valve operating in accordance with the internal pressure of the container. The working pressure of each safety valve is set so that the safety valve of at least one battery module is opened when the at least one battery module has its maximum internal pressure or less during the charge equalization. It is possible to provide a battery assembly that can improve the reliability of the container strength by keeping the working pressure of each safety valve lower than the pressure that the container resists even under elevated temperature conditions.
摘要:
An electrode plate unit capable of suppressing the internal short circuit caused by flashing that is formed on the end portion of a positive electrode plate and a battery using the same. The electrode plate unit includes a group of electrode plates in which a plurality of positive electrode plates 2 and a plurality of negative electrode plates 3 are laminated alternately via separators 4, a positive electrode collector plate connected to one side face of the group of electrode plates 5 connection to the positive electrode plate 2, and a negative electrode collector plate 6 connected to another side face of the group of electrode plates for connection to the negative electrode plate 3, wherein the edge portion of the positive electrode plate 2 is protruded from the edge portion of the negative electrode plate 3 on the entire side face excluding the side face to which the negative electrode collector plate 6 of the group of electrode plates is connected.
摘要:
A battery assembly includes a plurality of battery modules electrically connected together, each battery module acting as a secondary battery and including an electrode group, an electrolyte, a container for housing the electrode group and the electrolyte, and a safety valve operating in accordance with the internal pressure of the container. The working pressure of each safety valve is set so that the safety valve of at least one battery module is opened when the at least one battery module has its maximum internal pressure or less during the charge equalization. It is possible to provide a battery assembly that can improve the reliability of the container strength by keeping the working pressure of each safety valve lower than the pressure that the container resists even under elevated temperature conditions.
摘要:
An electrode plate unit capable of suppressing the internal short circuit caused by flashing that is formed on the end portion of a positive electrode plate and a battery using the same. The electrode plate unit includes a group of electrode plates in which a plurality of positive electrode plates 2 and a plurality of negative electrode plates 3 are laminated alternately via separators 4, a positive electrode collector plate connected to one side face of the group of electrode plates 5 connection to the positive electrode plate 2, and a negative electrode collector plate 6 connected to another side face of the group of electrode plates for connection to the negative electrode plate 3, wherein the edge portion of the positive electrode plate 2 is protruded from the edge portion of the negative electrode plate 3 on the entire side face excluding the side face to which the negative electrode collector plate 6 of the group of electrode plates is connected.
摘要:
In a sealed rechargeable battery module wherein a safety vent device (13) is provided to release the internal pressure of the battery when the pressure has reached a predetermined value, the safety vent device comprises a valve case (25) formed with a vent (26) and a sealing protrusion (27) surrounding this vent, a valve body (31) inserted in the valve case including a sealing portion (28) that is brought in tight contact with the sealing protrusion, a rigid holder (29) for supporting the sealing portion, and a resilient portion (30) for pressing the rigid holder toward the vent, and a valve cover (32) formed with apertures (33) for closing the upper open end of the valve case in a state wherein the resilient portion of the valve body is compressed.
摘要:
An electrode plate unit comprising a group of electrode plates in which a plurality of positive electrode plates (2) and a plurality of negative electrode plates (3) are laminated alternately via separators (4), and a collector plate (5) connected to one side face of the group of electrode plates by a plurality of welding portions (7), wherein the interval between the welding portions (7) in the connection portion between the collector plate (5) and the group of electrode plate is set to be narrower in the region in which the density of electric current collected by the collector plate is higher.
摘要:
An electrode plate unit capable of suppressing the internal short circuit caused by flashing that is formed on the end portion of a positive electrode plate and a battery using the same. The electrode plate unit includes a group of electrode plates in which a plurality of positive electrode plates 2 and a plurality of negative electrode plates 3 are laminated alternately via separators 4, a positive electrode collector plate connected to one side face of the group of electrode plates 5 connection to the positive electrode plate 2, and a negative electrode collector plate 6 connected to another side face of the group of electrode plates for connection to the negative electrode plate 3, wherein the edge portion of the positive electrode plate 2 is protruded from the edge portion of the negative electrode plate 3 on the entire side face excluding the side face to which the negative electrode collector plate 6 of the group of electrode plates is connected.