Abstract: An underneath large-capacity single-gas-pump foam generating device includes a liquid replenishment mechanism and a foam generating mechanism. The liquid replenishment mechanism includes a liquid replenishment groove and a liquid replenishment bottle. The liquid replenishment bottle has a bottle opening sleeved in the liquid replenishment groove. The foam generating mechanism includes a gas supply pump unit, a gas mixing groove cavity, a gas-liquid mixing structure, a gas inlet and a vent valve structure. A lower portion of the gas mixing groove cavity is communicated with a lower portion of the liquid replenishment groove, a liquid replenishment one-way valve is arranged between the gas mixing groove cavity and the liquid replenishment groove. The gas-liquid mixing structure is provided with a liquid outlet channel, a gas outlet channel and a mixing channel, an inlet end of the liquid outlet channel extends downwardly into a bottom portion of the gas mixing groove cavity.

Abstract: This application relates to a cover assembly of a secondary battery. The cover assembly includes a cover plate with an air hole; a blocker inserted into and blocking the air hole; a sealing member disposed between the blocker and the cover plate configured to seal a gap between the blocker and the cover plate; and a fastener disposed inside the air hole. The fastener is connected to the cover plate, the blocker is connected to the cover plate through the fastener. The fastener is configured to deform in response to a temperature rise, so that the blocker stops blocking the air hole. The blocker stops blocking the air hole as a temperature inside a housing rises, to discharge gas from the housing through the air hole. In this way, the secondary battery can be prevented from an explosion, while partial heat is taken away through gas discharge.

Abstract: A battery housing structure includes a housing, an end plate, and a first sealing element. The housing is a tubular structure with an opening at an end, and the tubular structure is configured to accommodate a battery cell. The end plate is mounted at an end of the housing. The housing and the end plate jointly form an accommodation space. The battery cell is disposed in the accommodation space. The first sealing element is disposed between the end plate and the housing so that the accommodation space is hermetically sealed.

Abstract: An embodiment of the present application provides a battery cell, a battery, a power consumption device, and a manufacturing device and method for a battery cell. The battery cell includes a housing, an electrode assembly, an end cover assembly and a current collecting member. The electrode assembly is accommodated in the housing, and the electrode assembly includes a tab. The end cover assembly includes an end cover, an electrode terminal and an insulating member, the end cover is used to cover at an opening of the housing, the electrode terminal is mounted to the end cover, and the insulating member is located on one side of the end cover facing the electrode assembly. The current collecting member is used to connect the electrode terminal and the tab. This structure can make more space for the electrode assembly and can effectively increase the capacity of the battery cell.

Abstract: A cover assembly includes a cover plate including a gas vent, a gas exhaust valve configured to seal the gas vent and deform in response to an increase in temperature to get out of a state of sealing the gas vent, and a sealing part. The gas exhaust valve includes a metal sheet and a fixing part. The metal sheet seals the gas vent. The sealing part is arranged between the metal sheet and the cover plate for sealing a gap between the metal sheet and the cover plate. The fixing part is connected to the metal sheet. The metal sheet is fixed to the cover plate by the fixing part. The fixing part is configured to deform in response to an increase in temperature in such a manner that the metal sheet gets out of the state of sealing the gas vent.

Abstract: A cover assembly of a secondary battery. The cover assembly includes: a cover plate including a gas vent; a gas exhaust valve configured to seal the gas vent and deform in response to an increase in temperature to get out of a state of sealing the gas vent; and a sealing part arranged between the gas exhaust valve and the cover plate and surrounding the gas vent for sealing a gap between the gas exhaust valve and the cover plate.

Abstract: A battery cell, a battery, an electrical device, a manufacturing method, and a manufacturing device are. In some embodiments, the battery cell includes: a shell, where the shell includes a wall; and a pressure relief mechanism, where the pressure relief mechanism is disposed on the wall, the pressure relief mechanism includes a body portion and a fragile portion connected to the body portion, the body portion is configured to connect to the wall, and the pressure relief mechanism is configured to break the fragile portion when an internal pressure or temperature of the battery cell reaches a threshold, so as to release the pressure. The pressure relief mechanism further includes a reinforcement portion disposed in the body portion in a thickness direction of the body portion. The reinforcement portion is configured to reduce deformation of the body portion.

Abstract: Provided is an electrode assembly and a manufacturing method and apparatus therefor, a battery, and a power consuming device, the electrode assembly being used for a battery cell and the electrode assembly including: a first electrode plate and a second electrode plate that have opposite polarities, where the first electrode plate and the second electrode plate each include a main body portion and a tab projecting from the main body portion, and the first electrode plate and the second electrode plate are wound about a winding axis; and an end portion of the wound main body includes at least one conductive region and at least one liquid guiding region, where the tab is led out of the conductive region, is wound by at least one turn, and is used for electrical connection to a terminal of the battery cell.

Abstract: Embodiments of the present disclosure provide a winder system that includes a battery winder and a camera apparatus. The battery winder is configured to wind a positive electrode plate and a negative electrode plate of a battery. The camera apparatus includes: a camera and a lens, where an angle between a sensor target plane of the camera and a lens plane of the lens is a predetermined angle, and the predetermined angle is greater than 0 degree and less than or equal to 20 degrees. The camera apparatus is configured to obtain images of the positive electrode plate and images of the negative electrode plate concurrently. The camera apparatus according to the present disclosure can implement focusing of images on different working planes, thereby obtaining clear images of both positive electrode features and negative electrode features concurrently with a single camera.

Abstract: A battery cell, a battery, an electrical device, and a method and equipment for manufacturing battery cells are provided. In some embodiments, the battery cell includes a casing, a pressure-relief mechanism and a protective part. The casing has a wall portion. The pressure-relief mechanism is provided on the wall portion. The pressure-relief mechanism includes a weak portion and a first portion and a second portion provided on two sides of the weak portion. The weak portion is used to connect the first portion and the second portion, and the pressure-relief mechanism is configured in such a way that the weak portion is broken to release pressure when the pressure in the casing reaches a threshold value. The protective part is arranged on the pressure-relief mechanism, and the protective part is used to connect the first portion and the second portion to increase strength of connection between the first portion and the second portion.

Abstract: This application provides a coating system, and relates to the technical field of coating. The coating system may include a coating head, a feeding apparatus, and a valve. The coating head may be equipped with at least two dispensing cavities independent of each other. Each dispensing cavity may include a coating opening. The feeding apparatus may be connected to the dispensing cavity, and the feeding apparatus may be configured to feed a slurry to the dispensing cavity. The valve may be disposed between at least one dispensing cavity and the feeding apparatus, and configured to implement communication or disconnection between a corresponding dispensing cavity and the feeding apparatus.

Abstract: An embodiment of the present application provides a battery cell, a battery, a power consumption device, and a manufacturing device and method for a battery cell. The battery cell includes a housing, an electrode assembly, an end cover assembly and a current collecting member. The electrode assembly is accommodated in the housing, and the electrode assembly includes a tab. The end cover assembly includes an end cover, an electrode terminal and an insulating member, the end cover is used to cover at an opening of the housing, the electrode terminal is mounted to the end cover, and the insulating member is located on one side of the end cover facing the electrode assembly. The current collecting member is used to connect the electrode terminal and the tab. This structure can make more space for the electrode assembly and can effectively increase the capacity of the battery cell.

Abstract: Embodiments of this application provide an electrode assembly, a manufacturing method and manufacturing system of same, a battery cell, and a battery. The electrode assembly includes a negative electrode plate and a positive electrode plate, where the negative electrode plate and the positive electrode plate are wound in a winding direction to form a winding structure, and the winding structure includes a bending zone. The negative electrode plate and the positive electrode plate each include a plurality of bending portions located in the bending zone.

Abstract: The present application relates to the field of an energy storage device, and more particularly, to a top cover assembly of a secondary battery, the secondary battery and an apparatus using a battery. The top cover assembly includes: a top cover sheet provided with an explosion-proof hole; an explosion-proof sheet, a position of the explosion-proof sheet corresponding to the explosion hole; and a fixing member, at least part of the fixing member being located between the top cover sheet and the explosion-proof sheet and connecting the top cover sheet and the explosion-proof sheet; where one of the explosion-proof hole and the fixing member is provided with a protrusion and the other is provided with a first groove, and the protrusion and the first groove are fixed.

Abstract: The present application relates to a method and an apparatus for controlling a temperature of a battery pack, a battery management system, and a storage medium. The method for controlling a temperature of a battery pack includes: detecting a SOC of the battery pack; determining a SOC interval in which the SOC is located from a plurality of preset SOC intervals; determining a target temperature threshold corresponding to the SOC interval under a condition that a preset battery pack life requirement is met, based on a mapping relationship between preset SOC intervals, target temperature thresholds and battery pack life; and performing thermal management on the battery pack based on the target temperature threshold; where the performing thermal management on the battery pack based on the target temperature threshold comprises cooling the battery pack based on the target temperature threshold.

Abstract: The present application relates to a method and an apparatus for controlling a temperature of a battery pack, a battery management system, and a storage medium. The method for controlling a temperature of a battery pack includes: detecting a SOC of the battery pack; determining a SOC interval in which the SOC is located from a plurality of preset SOC intervals; determining a target temperature threshold corresponding to the SOC interval under a condition that a preset battery pack life requirement is met, based on a mapping relationship between preset SOC intervals, target temperature thresholds and battery pack life; and performing thermal management on the battery pack based on the target temperature threshold; where the performing thermal management on the battery pack based on the target temperature threshold comprises cooling the battery pack based on the target temperature threshold.

Abstract: This application relates to a cover assembly of a secondary battery. The cover assembly includes a cover plate with an air hole; a blocker inserted into and blocking the air hole; a sealing member disposed between the blocker and the cover plate configured to seal a gap between the blocker and the cover plate; and a fastener disposed inside the air hole. The fastener is connected to the cover plate, the blocker is connected to the cover plate through the fastener. The fastener is configured to deform in response to a temperature rise, so that the blocker stops blocking the air hole. The blocker stops blocking the air hole as a temperature inside a housing rises, to discharge gas from the housing through the air hole. In this way, the secondary battery can be prevented from an explosion, while partial heat is taken away through gas discharge.

Abstract: A cover assembly of a secondary battery. The cover assembly includes: a cover plate including a gas vent; a gas exhaust valve configured to seal the gas vent and deform in response to an increase in temperature to get out of a state of sealing the gas vent; and a sealing part arranged between the gas exhaust valve and the cover plate and surrounding the gas vent for sealing a gap between the gas exhaust valve and the cover plate.

Abstract: Provided are a battery module, a secondary battery and a cap plate assembly. The battery module includes a plurality of secondary batteries arranged in sequence. The secondary battery includes an electrode assembly, a case and a cap plate assembly. The electrode assembly is received in the case and the cap plate assembly is connected to the case. The cap plate assembly includes a cap plate, an explosion-proof sheet and a fixing piece. The cap plate is disposed with a through hole, the explosion-proof sheet is disposed at the cap plate and seals the through hole, and the explosion-proof sheet has a weak region. The fixing piece connects the cap plate and the explosion-proof sheet. The fixing piece has a lower melting point than the cap plate and the explosion-proof sheet.