Abstract: An air nozzle includes a housing and an airflow regulation apparatus. The housing includes a target air outlet and an air inlet. Air flow enters the housing through the air inlet and leaves the housing through the target air outlet. The airflow regulation apparatus is located at the target air outlet and is capable of moving between a first position and a second position. The airflow regulation apparatus exerts a greater resistance against the air flow in the first position than it exerts against the air flow in the second position. When the airflow needs to be reduced, the airflow regulation apparatus is regulated to the first position to increase the resistance against the air flow at the target air outlet. When the airflow needs to be increased, the airflow regulation apparatus is regulated to the second position to reduce the resistance against the air flow at the target air outlet.

Abstract: A gap inspection apparatus and a gap inspection method are disclosed. The gap inspection apparatus is configured for a wound battery cell, where in a height direction of the wound battery cell. The gap inspection apparatus includes: an X-ray source and an X-ray detector and a bearing mechanism located between the X-ray source and the X-ray detector. The bearing mechanism includes at least one accommodating groove, the accommodating groove is configured to accommodate the wound battery cell, and the height direction of the wound battery cell crosses a first direction in which the X-ray source points to the X-ray detector. The X-ray source is configured to irradiate an arc-shaped area of the wound body portion, and the X-ray detector is configured to obtain an imaging image of the irradiated arc-shaped area, so as to obtain a gap value between two electrode plates within the arc-shaped area.

Abstract: A battery cell may comprise a housing, an electrode assembly, an end cover and an isolator. The housing may be provided with an opening at an end along a first direction. The housing may comprise a first side plate with a first plate body and a second plate body arranged along a second direction, the first plate body and the second plate body may be welded to form a welding part extending to the opening, and the second direction is perpendicular to the first direction. The electrode assembly may be accommodated in the housing. The end cover may be used for covering the opening. The isolator may be arranged between the first side plate and the electrode assembly, and attached to the first side plate and cover at least part of the welding part to isolate the electrode assembly from the welding part.

Abstract: A test method, a test apparatus, a test system, and a storage medium are provided, so as to solve the technical problem of how the leakage of a battery cell is detected. The test method of this embodiment of this application includes: (S10) obtaining a CAN signal output by a gas sensor, where the gas sensor is disposed on a test box, and a battery cell is placed in the test box; (S20) determining a gas concentration of a predetermined gas in the test box based on the CAN signal; and (S30) sending a concentration exceedance signal when the gas concentration is higher than a concentration threshold.

Abstract: The present disclosure discloses a charging method and apparatus, an electronic device, and a storage medium. The method includes: obtaining charging parameters of each battery module in a battery pack in a current charging mode, wherein the battery pack has a plurality of battery modules, and the current charging mode includes a series charging mode; and after determining, based on the charging parameters of each battery module, that any two battery modules meet a charging switching condition, controlling the plurality of battery modules to switch from the series charging mode to a parallel charging mode.

Abstract: The disclosure relates to the technical field of information reading devices, and provides a reading head protection apparatus and an information reading device. The reading head protection apparatus includes: a protective jacket including a reading head connection end and a chip connection end connected to the reading head connection end, the reading head connection end being configured to connect to a reading head, and the chip connection end being configured to connect to a chip carrier, wherein a first mounting cavity is arranged in the reading head connection end, a second mounting cavity is arranged in the chip connection end, and the second mounting cavity is communicated with the first mounting cavity. The technical solutions of the present application can achieve stable and reliable adhesion between the reading head and the chip, so as to improve the efficiency of the reading head in reading the stored information in the chip.

Abstract: This embodiment provides a box, a battery, and an electrical device. The box includes a first box body, a second box body, a sealing element, and a mating piece. A first opening is created on the first box body. The second box body is configured to fit and cover the first opening. The sealing element is at least partially clamped between the first box body and the second box body and configured to seal the first opening. The mating piece is accommodated in the first box body and connected to the first box body. The mating piece and the second box body clamp at least a part of the sealing element.

Abstract: A tightening apparatus and a control method for the tightening apparatus are provided. The tightening apparatus includes a mounting main body and a plurality of tightening mechanisms provided on the mounting main body. Each of the tightening mechanisms includes: a tightening actuation module, configured to tighten a fastener into a mounting hole along an axis in a first direction; a visual positioning module, configured to collect image information of the fastener located in the mounting hole, determine positioning information of the fastener based on the image information, and determine second-direction position compensation information and third-direction position compensation information of the tightening actuation module based on the positioning information; a second-direction driving mechanism, configured to drive the tightening actuation module to move in a second direction based; and a third-direction driving mechanism, configured to drive the tightening actuation module to move in a third direction.

Abstract: The disclosure provides a battery and a method for manufacturing the battery. The battery includes: a sampling apparatus; and at least two battery cells arranged in a first direction. Ends of the battery cells are provided with terminal posts, and an extending direction of the terminal posts protruding from the ends of the battery cells is perpendicular to the first direction. The sampling apparatus includes a sampling element having a built-in sampling signal line, at least two mounting portions are formed on the sampling element, and the mounting portions match side shapes of the terminal posts, so that the mounting portions are closely attached to the terminal posts of the corresponding battery cells. The sampling apparatus further includes a connection portion connected to the sampling signal line, and the connection portion electrically connects the mounting portions and the terminal posts.

Abstract: A welding clamp for use in battery manufacturing is described. The welding clamp includes a plurality of clamping portions used to fit and clamp a case of a battery cell, the clamping portion includes a body portion and a connecting portion, and the connecting portion is detachably connected to the body portion; and a wear-resistant layer is connected to a surface of the connecting portion facing the case. In the process of welding the case and the end cover of the battery cell, through fitting and clamping the case by the clamping portion of the welding clamp, the clamping portion can play a position-limit role to the wall of the case to relieve the deformation of the case during the welding process, thereby improving the welding quality of the case and the end cover and thus improving the production quality of the battery cell.

Abstract: A battery tray and a testing system for battery are provided. The battery tray may include: a tray body configured to support a battery; a testing connection bar, where the testing connection bar may be disposed on the tray body and have a plurality of signal collection portions, and the plurality of signal collection portions may include a current collection portion, a voltage collection portion, a pressure collection portion, and a temperature collection portion; and a positioning structure, where the positioning structure may be disposed on the tray body and configured to position the battery.

Abstract: An energy storage container, a method and an apparatus for producing an energy storage container are provided. The energy storage container includes: a pressure relief mechanism; and an isolating member provided on a side of the pressure relief mechanism facing an interior of the energy storage container, the interior of the energy storage container being configured to accommodate at least one battery, and an enclosed space being formed between the isolating member and the pressure relief mechanism; where the isolating member is configured to be actuated when an internal pressure or temperature of the energy storage container reaches a threshold, to relieve the internal pressure or temperature to the enclosed space, and the pressure relief mechanism is configured to be actuated when a pressure or temperature of the enclosed space reaches a threshold, to relieve the internal pressure or temperature.

Abstract: A cell winding device and method are disclosed. The cell winding device includes a first cutting unit, a first connection unit, a winding unit, and a second cutting unit. The first cutting unit is configured to perform cutting on an electrode sheet. The first connection unit is adjacent to the first cutting unit, and configured to connect, through a connection tape, adjacent electrode sheets that have been subject to the cutting. The winding unit is configured to perform winding on the adjacent electrode sheets connected through the connection tape and drive, in response to completion of the winding, the electrode sheets that are wound to move, in such a manner that the connection tape corresponds to the second cutting unit. The second cutting unit is configured to perform cutting on the connection tape. A winding efficiency for a battery cell is improved.

Abstract: This disclosure relates to the technical field of energy storage devices, and in particular, to a mounting bracket for a cell supervision circuit, a battery pack, and a vehicle. The mounting bracket includes: a management system mounting part, including a management system mounting surface, which is configured to mount a cell supervision circuit; and a thermally conductive part, configured to fit snugly to a container of the battery pack, which is connected to one end of the management system mounting part, and disposed on a side where the management system mounting surface is located.

Abstract: This application provides a charge current test method and device, and a charge test system. The method includes: charging a to-be-tested battery at a first current under a first temperature until a voltage of the to-be-tested battery reaches a preset cutoff voltage, stopping charging whenever an increment of a state-of-charge value of the to-be-tested battery reaches a preset value during the charging of the to-be-tested battery, and continuing to charge after a duration of stopping charging reaches a first preset time length; calculating an impedance of the to-be-tested battery during the first preset time length; and determining, based on the impedance, a maximum state-of-charge value that is allowed to be reached when the charging is performed at the first current under the first temperature.

Abstract: The present application relates to a secondary battery, which includes: a cathode sheet, an anode sheet, and an electrolyte; the cathode sheet includes a cathode film layer containing a cathode active material, and the anode sheet includes an anode film layer containing an anode active material; and the secondary battery meets a following function relationship: 0.22?3×(A1/A2)×(B2?B1)/(B1+B2)?1.55, the parameters are referred to the description; and an electrical device including the secondary battery. The secondary battery in the present application has both good cycle life and excellent fast charging capacity.

Abstract: This application provides a battery, an apparatus, and a manufacturing method and an apparatus of batteries, and relates to the field of energy storage technologies. The battery includes two battery cells and two discharge channels. The two battery cells each include a pressure relief mechanism, and the pressure relief mechanism is configured to be actuated when internal pressure or temperature in the battery cell reaches a threshold, to release the internal pressure. The two discharge channels are configured to collect emissions respectively from the corresponding battery cell when the pressure relief mechanism is actuated.

Abstract: The present application provides a battery pack and a spraying system thereof. The spraying system comprises: a spraying pipeline configured to circulate a fire-fighting fluid circulation, the spraying pipeline being capable of forming an opening after being heated; and a first gas storage portion configured to store a compressed gas, where the compressed gas in the first gas storage portion is capable of driving the fire-fighting fluid in the spraying pipeline to be discharged under the action of gas pressure. In the present application, the gas pressure of the compressed gas in the first gas storage portion can provide the power for discharging the fire-fighting fluid from the opening of the spraying pipeline, such that the fire-fighting fluid can be continuously discharged from the spraying pipeline, and there is a large flow rate in the discharging process, so as to ensure that the spraying system has a good spraying effect.

Abstract: The present application relates to a secondary battery, a process for preparing the same and an apparatus containing the secondary battery. The negative electrode film of the secondary battery comprises a first negative electrode film and a second negative electrode film; the first negative electrode film is disposed on at least one surface of the negative electrode current collector and comprises a first negative electrode active material; and the second negative electrode film is disposed on the first negative electrode film and comprises a second negative electrode active material, the first negative electrode active material comprises natural graphite and the first negative electrode active material satisfies: 0.60?S1?0.85; and the second negative electrode active material comprises artificial graphite. The secondary battery according to the present application has both better low-temperature rate performance and longer high-temperature cycle life while having a higher energy density.

Abstract: An electrode assembly may include a first electrode plate, where the first electrode plate may be coated with both an active substance layer and a viscous substance layer on two sides in a thickness direction of the electrode plate, and the active substance layer and the viscous substance layer on each side may be disposed side by side in a height direction of the electrode plate; and separators provided on the two sides of the first electrode plate in the thickness direction of the electrode plate and stacked with the first electrode plate; where in an unfolded state of the electrode assembly, the separator on each side of the first electrode plate may be a continuous integral structure, and the separators may be connected to the first electrode plate through the viscous substance layers.