This secondary battery includes: an electrode assembly including a first electrode and a second electrode having a polarity different from a polarity of the first electrode; and an exterior package that accommodates the electrode assembly and an electrolyte solution, wherein the exterior package includes a first wall and a second wall disposed to face each other, the first wall is provided with a first through hole and a first sealing member that seals the first through hole, the second wall is provided with a second through hole and a second sealing member that seals the second through hole, the first sealing member is different from the first electrode terminal and the second electrode terminal, and the second sealing member is different from the first electrode terminal and the second electrode terminal. This secondary battery can be manufactured efficiently and stably.

This secondary battery includes: an electrode assembly including a first electrode and a second electrode having a polarity different from a polarity of the first electrode; and an exterior package that accommodates the electrode assembly and an electrolyte solution, wherein the exterior package includes a first wall and a second wall disposed to face each other, the first wall is provided with a first through hole and a first sealing member that seals the first through hole, the second wall is provided with a second through hole and a second sealing member that seals the second through hole, the first sealing member is different from the first electrode terminal and the second electrode terminal, and the second sealing member is different from the first electrode terminal and the second electrode terminal. This secondary battery can be manufactured efficiently and stably.

In a secondary battery, a case main body is provided with a first opening at one end portion of the case main body and a second opening at the other end portion of the case main body, the first opening is sealed with a first sealing plate, the second opening is sealed with a second sealing plate, a first through hole is provided at a region located on the second opening side with respect to an end portion of an electrode assembly on the second opening side, and the first through hole is sealed with a first sealing member. With this configuration, the secondary battery can be manufactured more efficiently and stably.

In a secondary battery, a case main body is provided with a first opening at one end portion of the case main body and a second opening at the other end portion of the case main body, the first opening is sealed with a first sealing plate, the second opening is sealed with a second sealing plate, a first through hole is provided at a region located on the second opening side with respect to an end portion of an electrode assembly on the second opening side, and the first through hole is sealed with a first sealing member. With this configuration, the secondary battery can be manufactured more efficiently and stably.

A method of manufacturing a secondary battery includes accommodating an electrode assembly in a battery part communicating with a gas collection part of the battery case; positioning a gas discharge pipe in an open portion of the battery case at the side edge, wherein the gas discharge pipe is configured to discharge a gas and inject an electrolyte; and simultaneously fixing the gas discharge pipe to the battery case and sealing the battery case by sealing the open portion and the gas discharge pipe together. The method may efficiently remove an activation process gas using a gas discharge pipe capable of performing both gas discharge and electrolyte injection and is simplified by simultaneously sealing the gas discharge pipe and sealing a battery case.

In addition, the present technology provides a method of manufacturing a secondary battery, which can reduce the number of sealing operations by injecting an electrolyte before an activation process using a gas discharge pipe with a double pipe structure including a gas discharge passage and an electrolyte injection passage.

A gas discharge and electrolyte injection device with a structure capable of performing both gas discharge and electrolyte injection, and a secondary battery including the same are also included.

A method of manufacturing a secondary battery includes accommodating an electrode assembly in a battery part communicating with a gas collection part of the battery case; positioning a gas discharge pipe in an open portion of the battery case at the side edge, wherein the gas discharge pipe is configured to discharge a gas and inject an electrolyte; and simultaneously fixing the gas discharge pipe to the battery case and sealing the battery case by sealing the open portion and the gas discharge pipe together. The method may efficiently remove an activation process gas using a gas discharge pipe capable of performing both gas discharge and electrolyte injection and is simplified by simultaneously sealing the gas discharge pipe and sealing a battery case.

In addition, the present technology provides a method of manufacturing a secondary battery, which can reduce the number of sealing operations by injecting an electrolyte before an activation process using a gas discharge pipe with a double pipe structure including a gas discharge passage and an electrolyte injection passage.

A gas discharge and electrolyte injection device with a structure capable of performing both gas discharge and electrolyte injection, and a secondary battery including the same are also included.

Mechanisms and methods for pressurized fluid injection, evacuation, and venting from containment vessels, such as the housing for a battery or capacitor, using an elastomeric sealing vent mechanism are disclosed. The invention describes designs and methods in which a fluid injection port is plugged with an elastomeric sealing vent, serving as both the primary fluid sealing mechanism and the safety relief mechanism in case of over-pressurization or over-heating.

Mechanisms and methods for pressurized fluid injection, evacuation, and venting from containment vessels, such as the housing for a battery or capacitor, using an elastomeric sealing vent mechanism are disclosed. The invention describes designs and methods in which a fluid injection port is plugged with an elastomeric sealing vent, serving as both the primary fluid sealing mechanism and the safety relief mechanism in case of over-pressurization or over-heating.

A gas release valve has a valve body that is made from rubber or resin and closes a communication passage providing communication between an outside and an inside of a battery case. In an inner communication passage, which is positioned on an inner side of the battery case with respect to a valve body in the communication passage, a moisture absorber is arranged in a state where gas in the battery case is able to pass inside the inner communication passage.

An end cover assembly includes: an end cover with a through hole for injecting electrolyte and a first clamping portion, wherein the first clamping portion is disposed along a circumferential direction of the through hole and is located on one side of the end cover away from an interior of the battery cell; a sealing ring for sealing the through hole; and a pressure relief device covering at least part of the sealing ring and closing the through hole; wherein the pressure relief device includes a second clamping portion, and is rotatable such that when the pressure relief device is rotated to a first position, the second clamping portion is clamped with the first clamping portion; and when the pressure relief device is rotated to a second position, the second clamping portion is disengaged from the first clamping portion.