Contemporary Amperex Technology Co., Ltd.

Contemporary Amperex Technology (Hong Kong) Limited

Xiamen University

Contemporary Amperex Technology Limited

Chao Chen

Zhipeng Chen

Wei Zhang

Lin Ma

Siying Huang

Yang Li

Yaohui Wang

Tao Feng

Jinghua Huang

Xing Yang

Jiachao Chen

Qichao Huang

Wenjun Xue

Yucong Xue

An image acquisition apparatus includes a camera, a first light source, a second light source, and a lens. The first light source is configured to emit first light toward one electrode plate so as to illuminate a local portion of the electrode plate, and the first light source emits the first light at an angle such that the first light is able to be reflected to the camera via the electrode plate. The second light source is configured to emit second light toward the other electrode plate so as to illuminate a local portion of the other electrode plate. The lens includes a reflective region, where the reflective region is arranged at an angle to reflect the second light reflected by the second electrode plate to the camera, such that the camera acquires a stitched image of the positive and negative electrode plates.

Image acquisition apparatus and defect detection system of electrode plate

A misalignment detection method and apparatus for battery tabs, and a battery electrode plate winding system, are disclosed. The method includes winding a battery electrode plate onto a winding shaft. For an Nth layer (where N is an integer greater than zero) of the electrode plate section wound on the winding shaft, an image including a battery tab region is acquired during the winding period. A relative positional relationship between a battery tab and a reference part on the winding shaft is determined from the image. Based on this positional relationship and the layer number of the Nth electrode plate section, a misalignment amount of the battery tab is calculated for when the wound electrode plate is later pressed into a battery cell. The method enables real-time monitoring of tab alignment during winding, improving accuracy in battery cell assembly.

Misalignment detection method and apparatus for battery tabs, and battery electrode plate winding system

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.

Camera apparatus and winder system

Provided are a battery winding method, a battery winding system, a battery and an electrical device. The battery winding method includes: winding; photographing a picture of a current winding layer; acquiring position data of a first point and of a second point according to the picture of the current winding layer, converting the position data of the first point to obtain the converted position data of a converted first point using a preset conversion matrix corresponding to the current winding layer based on the number of the current winding layers and calculating data of displacement between the first and second electrode plates based on the converted position data of the converted first point and the position data of the second point, and determining if the data of displacement is within a threshold value scope, if so, returning to wind a next winding layer, and if not, sending an alarm.

Battery winding method, battery winding system, battery and electrical device

The present disclosure discloses a blue fluorescent powder for a three primary color warm white LED and a preparation method thereof. SrCO, NHCl, HBO, EuO, and NHHPOfunction as raw materials to obtain a chemical formula of a blue fluorescent powder SrEu(BO)(PO)Cl in a reducing atmosphere by a solid-state sintering method, wherein 0.001&#x2264;x&#x2264;0.1 and 0.001&#x2264;y&#x2264;0.5. The blue fluorescent powder is mixed with CaAlSiN:Eured fluorescent powder and (SrBa)SiO:Eugreen fluorescent powder at a certain proportion to emit warm white light with a light efficiency and a color rendering index under a violet light excitation. An application prospect is wide.

Blue fluorescent powder for three primary color warm white light LED and preparation method therefor

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Ningde, China

Chao Chen