Abstract: Provided are a box, a battery, and an electric device. The box includes an electrical chamber, a collection chamber, an isolation component, and a processing device. The electrical chamber is configured to accommodate multiple battery cells, wherein at least one battery cell among multiple battery cells includes a pressure relief mechanism; The collection chamber is configured to collect emissions from the battery cells arranged with the pressure relief mechanism when the pressure relief mechanism is actuated; the isolation component is configured to isolate the electrical chamber and the collection chamber; and the isolation component is provided with a first through-hole, wherein the emissions can enter the collection chamber through the first through-hole. The processing device is arranged at the first through-hole and configured to treat the emissions to reduce a temperature and/or concentration of combustible material in the emissions.

Abstract: Provided are a battery and an electric device. The battery includes multiple battery cells, a box, and a spray mechanism, wherein at least one battery cell among multiple battery cells includes a pressure relief mechanism. The box includes an electrical chamber, a collection chamber, and a first isolation component, wherein the electrical chamber is configured to accommodate the multiple battery cells; the collection chamber is configured to collect emissions from the battery cells arranged with the pressure relief mechanism when the pressure relief mechanism is actuated; the first isolation component is configured to isolate the electrical chamber and the collection chamber; and the first isolation component is provided with a first through hole, wherein the emissions can enter the collection chamber through the first through hole. The spray mechanism is arranged within the collection chamber, wherein the spray mechanism is configured to spray firefighting media into the collection chamber.

Abstract: Embodiments of the present application provides a battery and an electrical device. The battery includes: a box including an electrical chamber; a battery cell accommodated in the electrical chamber, a pressure relief mechanism being disposed on a first wall of the battery cell; and a support component attached to the first wall, the support component being configured so that emissions of the battery cell pass through the support component to be discharged out of the electrical chamber when the pressure relief mechanism is actuated, and the support component being provided with a reinforcing structure. The technical solutions of the present application can improve safety performance of the battery.

Abstract: A data quality check using a structured query language hint is described. A query optimizer of a database management system may receive a data quality check instruction as part of a database query statement for a database query. The query optimizer may modify a query execution plan for the database query based on the data quality check instruction so that completion of the database query is dependent on a result of a data quality check defined by the data quality check instruction. The database management system may execute the modified query execution plan.

Abstract: The present application provides a battery and an electrical device. The battery includes a battery cell and a release treating device. A pressure relief mechanism of the battery cell can release a substance inside the battery cell, a treating space of the release treating device is connected with the pressure relief mechanism, and a treating member in the treating space can treat the substance released by the pressure relief mechanism into the treating space to reduce a specified parameter of the substance. After the specified parameter of the substance is reduced, the possibility of combustion of the substance is greatly reduced, so that the battery is less prone to ignition when thermal runaway occurs, which is conducive to improving the safety of the battery.

Abstract: Embodiments of this application provide an explosion-proof valve, a battery pack, and an apparatus. The explosion-proof valve includes a flame arresting member and an air permeable membrane. The flame arresting member is configured to connect to a housing of a battery pack, the air permeable membrane is fastened to the flame arresting member, and the battery pack is capable of exchanging gas with the outside through the flame arresting member and the air permeable membrane in sequence. During use of the explosion-proof valve of this application in the battery pack of this application, when thermal runaway occurs inside the housing of the battery pack, pressure inside the housing is suddenly increased, and as a result, the battery pack releases the pressure through the explosion-proof valve, and high-temperature runaway gas impacts and melts the air permeable membrane, forming a smooth air flow channel.

Abstract: A battery pack, a safety control method therefor, and an electric apparatus are provided. The battery pack includes: a box assembly; a plurality of battery cells disposed in the box assembly, the battery cell having a housing; and a safety protection mechanism disposed in the box assembly and having a first state and a second state. When the safety protection mechanism is in the first state, the plurality of battery cells are insulated from the box assembly. The safety protection mechanism is in the second state when a preset trigger condition is met, and when the safety protection mechanism is in the second state, the housings of at least some of the battery cells are electrically connected to the box assembly.

Abstract: A battery module includes a first guard and a plurality of battery cells. The plurality of battery cells are arranged along a first direction. One end of the battery cell in a second direction is provided with a pressure relief mechanism. The second direction is perpendicular to the first direction. The pressure relief mechanism is configured to release the internal pressure of the battery cell when the internal pressure or temperature of the battery cell reaches a threshold value. The first guard includes a first guarding portion covering the end of the plurality of battery cells provided with the pressure relief mechanism. A plurality of venting ports are provided on the first guarding portion, and the venting port and the pressure relief mechanism are provided in a staggered manner in the second direction.

Abstract: A battery housing includes an electrical cavity configured to accommodate battery cells. At least one battery cell includes a pressure relief mechanism configured to be actuated in response to internal pressure or temperature of the at least one battery cell reaching a threshold to relieve the internal pressure. The housing further includes a collection cavity configured to collect emissions from the at least one battery cell in response to the pressure relief mechanism being actuated, a separation component configured to separate the electrical cavity and the collection cavity, a partition structure configured to partition the collection cavity into a first cavity and a second cavity, and a flow channel baffle arranged in the second cavity and configured to form a flow channel for guiding the emissions. The partition structure is provided with an exhaust vent configured to guide the emissions in the first cavity into the second cavity.

Abstract: Embodiments of this application provide an explosion-proof valve, a battery pack, and an apparatus. The explosion-proof valve includes a flame arresting member and an air permeable membrane. The flame arresting member is configured to connect to a housing of a battery pack, the air permeable membrane is fastened to the flame arresting member, and the battery pack is capable of exchanging gas with the outside through the flame arresting member and the air permeable membrane in sequence. During use of the explosion-proof valve of this application in the battery pack of this application, when thermal runaway occurs inside the housing of the battery pack, pressure inside the housing is suddenly increased, and as a result, the battery pack releases the pressure through the explosion-proof valve, and high-temperature runaway gas impacts and melts the air permeable membrane, forming a smooth air flow channel.