Abstract: Disclosed are a battery charge and discharge test apparatus including a temperature control box, a frame, at least one partition, and a plurality of charge and discharge modules. The temperature control box is provided with a plurality of test chambers, and openings are provided on a first side of the temperature control box for communicating with the test chambers respectively and taking and placing batteries. The frame is disposed adjacent to a second side of the temperature control box, and the at least one partition is located inside the frame to partition the frame into a plurality of accommodating chambers. The first side and the second side are opposite each other. The plurality of charge and discharge modules are disposed in the plurality of accommodating chambers respectively and configured to charge and discharge the batteries in the corresponding test chambers.

Abstract: A charge/discharge test apparatus includes a temperature control box having a test chamber provided inside and provided with an opening communicated with the test chamber and configured for extraction or insertion of a battery, and a rack connected to the temperature control box. The rack and the opening are located at different sides of the temperature control box, and the rack has an accommodating cavity inside. The charge/discharge test apparatus further includes a charge/discharge module located in the accommodating cavity and configured to charge/discharge a battery in the corresponding test chamber.

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: 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 test apparatus for testing a swelling force of a battery housing may include equivalent end plates and a retractable part. An actual battery module may be replaced by the battery test apparatus, eliminating the need for a battery module and accompanying charging and discharging devices and reducing the test cost. Two equivalent end plates may be spaced apart along a first direction to replace a battery module actually in contact with the battery housing along the first direction. The retractable part may be arranged between the two equivalent end plates. The retractable part may compress the two equivalent end plates to make the equivalent end plates compress the battery housing.

Abstract: Embodiments of this application provide a testing apparatus, configured to test a battery and including a test body and a first door body. The test body may include an accommodating cavity for accommodating the battery, and an opening. The opening may communicate with the accommodating cavity, and the first door body may be connected to the opening and capable of moving relative to the opening. The first door body may have a first state and a second state; in the first state, the first door body may block a part of the opening; and in the second state, the first door body may seal the opening.

Abstract: An inspection method includes obtaining an image of a corner region of the wound cell that includes an image of a cathode electrode plate at N layers of the corner region of the wound cell and an anode electrode plate at the N layers, and determining, based on the image of the corner region, amounts of misalignment between the cathode electrode plate and the anode electrode plate that are adjacent in the wound cell. N is a positive integer.

Abstract: A gas volume measurement apparatus configured to monitor volume of gas produced during formation of a battery includes a delivery device and a measurement device. The delivery device connects the battery and the measurement device and is configured to remove hazardous substances from gas produced by the battery and deliver the gas to the measurement device. The measurement device is configured to measure volume of the gas produced by the battery.

Abstract: This application provides a battery wetting state detection method and apparatus, a device, a system, and a medium and pertains to the field of battery technologies. The detection method may include: obtaining a three-dimensional tomographic image of a battery through neutron imaging; and determining a wetting state of the battery based on the three-dimensional tomographic image.

Abstract: The present application discloses a method, apparatus, device, and system for monitoring battery pack safety. The method includes: obtaining, based on obtained stress data of a battery pack in an electric vehicle, stress energy information of the battery pack; determining a target-level alarm condition based on the stress energy information and sending corresponding alarm information, where the target-level alarm condition is a level of alarm condition in preset N levels of alarm conditions that the stress energy information satisfies, an ith level of alarm condition indicates that there are mi occurrences of impact energy represented by the stress energy information that is within an ith energy threshold range, and a lower limit of the ith energy threshold range of the ith level of alarm condition is greater than an upper limit of an (i?1)th energy threshold range of an (i?1)th level of alarm condition, and mi<mi-1.