CATL Patente

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A pressure relief component, a battery cell, a battery and an electrical apparatus, belonging to the technical field of batteries. The pressure relief component includes a mounting member and a pressure relief valve plate; the mounting member is provided with an opening, the mounting member is provided with sinking recesses around a circumferential direction of the opening, and each sinking recess includes a recess bottom wall and a recess side wall; and the pressure relief valve plate covers the opening, and the pressure relief valve plate includes a body part and mounting parts, the body part being provided with weak areas, the mounting parts being connected to a periphery of the body part, and the mounting parts being bent to be supported on the recess bottom walls and being welded to the recess side walls.

The present application provides a coating die and an electrode plate coating device, where the coating die is provided with an inlet, a first distribution cavity, a plurality of distribution channels, and a plurality of coating outlets. The plurality of coating outlets are spaced apart along a first direction. Each distribution channel is provided with an inlet port and an outlet port at two respective ends thereof. The inlet port is in communication with the inlet, each outlet port is oriented toward a corresponding coating outlet, and cross-sectional areas of the inlet ports of all of the plurality of distribution channels are equal. Since the cross-sectional areas of all the inlet ports of the distribution channels are equal and the outlet port of each distribution channel corresponds to a respective coating outlet, the slurry can be evenly distributed and guided to the plurality of coating outlets under the action of the distribution channels, reducing the problem of uneven slurry amounts obtained by the coating outlets during free flow, which facilitates improving the consistency of discharge from the plurality of coating outlets and enhances the uniformity of slurry coating in the coating process.

The present application discloses a battery and an electric device. The battery includes: a battery cell (20) provided with a first pressure relief mechanism (21); a housing (10) provided with an inner cavity (11); a first separator plate (30) mounted in the housing (10) to separate the inner cavity (11) into a first chamber (111) and a second chamber (112), where the battery cell (20) is mounted in the first chamber (111), the first separator plate (30) is provided with a through hole (31), the first chamber (111) is communicated with the second chamber (112) through the through hole (31), and the first pressure relief mechanism (21) is communicated with the through hole (31) to allow an ejected substance ejected from the battery cell (20) to flow into the second chamber (112); and a cooling device mounted in the second chamber (112), where the cooling device is configured to cool the ejected substance flowing into the second chamber (112). Application of the technical solution of the present application solves the problems that high-temperature substances ejected during thermal runaway of current batteries not only have the risk of being ignited, but also generate continuous thermal shock and radiation to the periphery of the battery, and great thermal harm is caused.

A battery swapping device (5), the battery swapping device comprising a bearing platform (51), a driving mechanism (52), a battery swapping platform (53), and an adjusting mechanism (54). The driving mechanism is at least used for driving the bearing platform to ascend and descend. The battery swapping platform is used for mounting and dismounting a battery (11) of an electrical device (6). The adjusting mechanism is connected to the bearing platform and the battery swapping platform and is used for adjusting the spatial posture of the battery swapping platform with respect to the bearing platform. The apparatus reduces difficulty in aligning battery swapping platforms with batteries, improves battery mounting and dismounting efficiency, and reduces the risk of damage to the batteries. In addition, also disclosed is a battery swapping station (2).

Provided are a battery swapping station, and a battery swapping method. The battery swapping station comprises a lifting apparatus (21), a control apparatus (22), and a battery swapping device (24). The lifting apparatus (21) includes a plurality of lifting tables (211) which are used to support the electric device (1) and can be raised, and raising movements of at least two lifting tables (211) are independent. The control apparatus (22) is used to receive a tilt angle signal sent by the electric device (1), and can control a raising height of each lifting table (211) according to the tilt angle signal, wherein the tilt angle signal is used to reflect a tilt angle of the electric device (1). The battery swapping device (24) is used to swap a battery of the electric device (1). The battery swapping station can reduce the difficulty for disassembling and assembling a battery to increase efficiency for swapping the battery.

A battery swapping device and a battery swapping station. The battery swapping device (5) comprises a plurality of battery swapping platforms (51) and a lifting mechanism (52), each battery swapping platform (51) being used for dismounting and mounting a battery (11) of an electrical device (6), and the lifting mechanism (52) being connected to the plurality of battery swapping platforms (51) and used for driving the plurality of battery swapping platforms (51) to move up and down. The lifting mechanism (52) enables the plurality of battery swapping platforms (51) to move up and down, such that the plurality of battery swapping platforms (51) can be close to or away from the electrical device (6); and the plurality of battery swapping platforms (51) can simultaneously replace batteries (11) of the electrical device (6), thereby improving the battery (11) swapping efficiency, shortening the battery (11) swapping time, and improving user experience.

An electrolyte, a battery, and an electric device are provided, where the electrolyte includes: A<x>O<y>Z- and PO<2>F<2>- , where A includes at least one of P, S, or Si, 1≤x≤2, 4≤y≤5, and 2≤z≤3.

A perovskite solar cell and a preparation method thereof, a photovoltaic module, a system, and an electric device are provided. The perovskite solar cell includes a transparent electrode layer and, a perovskite layer, an electron transport layer, and a metal electrode sequentially disposed on the transparent electrode layer; where the electron transport layer includes an organic electron transport material, a first additive, and a second additive; the first additive includes one or more of polymethyl methacrylate, methacrylic acid-methyl methacrylate copolymer, 4-vinylpyridine-styrene copolymer, polyacrylonitrile, and poly(4-vinylpyridine); and the second additive includes one or more of a compound of formula I and a compound of formula II. The perovskite solar cell of this application has high photoelectric conversion efficiency and good stability.

The present application discloses a battery pressurization device and a battery production system. The battery pressurization device includes a bearing mechanism, a first pressurization plate, and a second pressurization plate. The first pressurization plate and the second pressurization plate are disposed on the bearing mechanism and are opposite to each other in a first direction. The first pressurization plate and the second pressurization plate can move towards each other in the first direction to apply pressure to a battery cell disposed between the first pressurization plate and the second pressurization plate from both sides.

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