An electrochemical reactor includes positive and negative electrodes. A conductive and/or dielectric liquid is provided between the positive and negative electrodes. A first isolation member provided on the positive electrode isolates the positive electrode from the liquid, and a second isolation member provided on the negative electrode isolates the negative electrode from the liquid. The first and second isolation member each includes a liquid-repellent porous membrane. The reactor further includes a pressure-applying member which pressurizes the liquid to fill the pores of the first and second liquid-repellent porous membranes with the liquid, thereby causing an electrochemical reaction involving the positive and negative electrodes.

Embodiments of the present application provide a box of a battery. The box includes: an electrical chamber configured to accommodate a plurality of battery cells, a battery cell including a pressure relief mechanism, and the pressure relief mechanism being configured to be actuated when an internal pressure or temperature of the battery cell reaches a threshold, to relieve the internal pressure; a thermal management component configured to accommodate a fluid to adjust the temperature of the battery cell; and a collection chamber configured to collect emissions discharged from the battery cell when the pressure relief mechanism is actuated, where the electrical chamber and the collection chamber are disposed on both sides of the thermal management component, a wall of the collection chamber is provided with a first pressure relief zone, and the first pressure relief zone is configured to relieve the emissions in the collection chamber.

Embodiments of the present application provide a box of a battery. The box includes: an electrical chamber configured to accommodate a plurality of battery cells, a battery cell including a pressure relief mechanism, and the pressure relief mechanism being configured to be actuated when an internal pressure or temperature of the battery cell reaches a threshold, to relieve the internal pressure; a thermal management component configured to accommodate a fluid to adjust the temperature of the battery cell; and a collection chamber configured to collect emissions discharged from the battery cell when the pressure relief mechanism is actuated, where the electrical chamber and the collection chamber are disposed on both sides of the thermal management component, a wall of the collection chamber is provided with a first pressure relief zone, and the first pressure relief zone is configured to relieve the emissions in the collection chamber.

Provided is a technique capable of improving impregnation efficiency of a nonaqueous electrolyte into an electrode body. A manufacturing method herein disclosed includes producing a negative pressure in an inside of a battery case; introducing a nonaqueous electrolyte into the inside of the battery case; establishing communication between the inside of the battery case and external atmosphere; temporarily sealing a solution introduction port using a first sealing member, impregnating the electrode body with a nonaqueous electrolyte; opening the solution introduction port; and, sealing the solution introduction port using a second sealing member. Herein, the first sealing member includes an air permeable film. Air permeation is enabled between the inside of the battery case after the temporary sealing and external atmosphere. The permeability of a vapor derived from the nonaqueous electrolyte with respect to the film is smaller than the permeability of water vapor.

According to an embodiment, a liquid injection device includes a liquid injection chamber, a liquid injector, a pressure regulator and a controller. The liquid injection chamber accommodates a battery, including an exterior container provided with a liquid injection port, in an initial state. The liquid injector injects an electrolytic solution into the exterior container through the liquid injection port, in the liquid injection chamber. The controller controls an action of the pressure regulator to bring the liquid injection chamber to a depressurized state, where the pressure is lower than in the initial state, and then bring the liquid injection chamber to a pressurized state, where the pressure is higher than in the initial state.

According to an embodiment, a liquid injection device includes a liquid injection chamber, a liquid injector, a pressure regulator and a controller. The liquid injection chamber accommodates a battery, including an exterior container provided with a liquid injection port, in an initial state. The liquid injector injects an electrolytic solution into the exterior container through the liquid injection port, in the liquid injection chamber. The controller controls an action of the pressure regulator to bring the liquid injection chamber to a depressurized state, where the pressure is lower than in the initial state, and then bring the liquid injection chamber to a pressurized state, where the pressure is higher than in the initial state.

A method for producing a battery, the method includes a liquid injecting process. In this liquid injecting process includes: a first liquid-injecting step of injecting an electrolytic solution of a first injection amount (V1) determined so that a liquid-level height of the electrolytic solution falls within an intermediate liquid-level range in which the liquid-level height is equal to or higher than a first reference height but is lower than a second reference height while an air pressure in a metal battery case is regulated to a first air pressure; and a second liquid-injecting step of injecting the electrolytic solution in a remaining second injection amount up to a specified amount while increasing the air pressure in the metal battery case to a second air pressure higher than the first air pressure and maintaining the liquid-level height of the electrolytic solution within the intermediate liquid-level range.

A method for producing a battery, the method includes a liquid injecting process. In this liquid injecting process includes: a first liquid-injecting step of injecting an electrolytic solution of a first injection amount (V1) determined so that a liquid-level height of the electrolytic solution falls within an intermediate liquid-level range in which the liquid-level height is equal to or higher than a first reference height but is lower than a second reference height while an air pressure in a metal battery case is regulated to a first air pressure; and a second liquid-injecting step of injecting the electrolytic solution in a remaining second injection amount up to a specified amount while increasing the air pressure in the metal battery case to a second air pressure higher than the first air pressure and maintaining the liquid-level height of the electrolytic solution within the intermediate liquid-level range.

Provided is a secondary battery module capable of constantly maintaining a surface pressure of a battery cell. The secondary battery module of the present invention includes a battery stack in which a plurality of battery cells are stacked; a case in which the battery stack is accommodated; a pressure pad disposed to be in contact with the battery cells constituting the battery stack and having a volume which is adjusted; and a pressure adjusting unit that adjusts the volume of the pressure pad in response to a measured pressure, thereby constantly maintaining the pressure applied to the battery cell.

Provided is a secondary battery module capable of constantly maintaining a surface pressure of a battery cell. The secondary battery module of the present invention includes a battery stack in which a plurality of battery cells are stacked; a case in which the battery stack is accommodated; a pressure pad disposed to be in contact with the battery cells constituting the battery stack and having a volume which is adjusted; and a pressure adjusting unit that adjusts the volume of the pressure pad in response to a measured pressure, thereby constantly maintaining the pressure applied to the battery cell.