华视智能：开创锂电蓝膜六面AI视觉检测新篇章
蓝膜高反光、瑕疵难辨？华视六面 AI 视觉全检，六面全扫、一次过!
Blue film highly reflective, defects hard to tell apart? Walvision's six-side AI vision full inspection—all faces in one pass.
锂电行业新一轮品质竞赛已悄然升级——从极片涂布到电芯包膜，每一个工艺环节的"零缺陷"追求，正在重新定义高端产能的门槛。电芯包蓝膜后的外观缺陷检测，长期依赖人工目检或传统 2D 视觉方案，漏检率高、效率低，且难以应对蓝膜高反光表面的复杂缺陷——这是制约电芯良率提升的"最后一公里"难题。
A new round of quality competition in the lithium-ion battery industry is quietly intensifying—from electrode coating to cell wrapping, the pursuit of "zero defects" at every process step is redefining the bar for high-end capacity. Appearance inspection after blue-film wrapping has long relied on manual visual checks or traditional 2D vision, suffering from high escape rates, low efficiency, and an inability to handle the complex defects on the highly reflective blue-film surface—this is the "last-mile" challenge constraining cell yield.
华视智能凭借在分时频闪成像、2.5D 相位偏折、光度立体三大核心技术的积累，推出新一代蓝膜六面外观全检设备，实现对包膜后电芯 6 面、8 顶角、12 棱的 360° 无盲区覆盖，过杀率 ≤0.3%、漏杀率 0%，将蓝膜外观检测带入"全检 + AI"时代。
Leveraging its expertise in three core technologies—time-division strobe imaging, 2.5D phase measuring deflectometry, and photometric stereo—Walvision (Nanjing) has launched a new-generation blue-film six-side appearance full-inspection system. It achieves 360° blind-spot-free coverage of the wrapped cell's 6 faces,8 top cornersand12 edges, with an over-kill rate ≤0.3% and a miss rate of 0%, ushering blue-film appearance inspection into the era of "full inspection + AI".
蓝膜（绝缘隔离膜）包覆是电芯生产的关键工序，既承担绝缘隔离，又提供结构保护。其外观缺陷检测长期面临三大痛点：
Blue-film (insulating isolation film) wrapping is a critical cell-production process, providing both electrical insulation and structural protection. Its appearance defect inspection has long faced three major pain points:
缺陷形态复杂，传统方案力不从心：包膜后缺陷多达数十种——蓝膜破损、膜下异物、气泡、褶皱、划痕、凹凸点、棱边撞伤，尺度从亚毫米到数厘米；蓝膜高反光特性使单一光照下的传统 2D 视觉极易漏判、误判。
Complex defect morphologies overwhelm traditional solutions: post-wrapping defects number in the dozens—blue-film rupture, sub-film foreign objects, bubbles, wrinkles, scratches, bumps/dents, edge collisions—ranging from sub-millimeter to several centimeters; the highly reflective nature of blue film makes traditional 2D vision under single lighting prone to both missed and false judgments.
六面全检难度大，盲区难以消除：六面 +八顶角 + 十二棱均需检测，传统方案需多工位、多相机、多次翻转，结构复杂且节拍难匹配产线，棱边缺陷尤其难成像。
Six-side full inspection is difficult, blind spots hard to eliminate: all six faces + eight top corners + twelve edges must be inspected; traditional approaches need multiple stations, multiple cameras and repeated flipping—complex in structure and hard to match line takt, with edge defects especially difficult to image.
检测标准严苛，过杀与漏检难以兼得：头部电芯厂要求过杀率 ≤0.3%、漏杀率 0%，传统算法在二者间难以平衡，调试周期长、换型成本高。
Stringent standards make over-kill and escape hard to balance: tier-1 cell makers demand over-kill ≤0.3% and miss rate 0%; traditional algorithms struggle to balance the two, with long commissioning cycles and high changeover costs.
华视智能蓝膜六面全检设备采用多工位协同设计，配置 2D、2.5D、3D 成像系统，实现对电芯顶面、底面、两大面、两侧面、防爆阀与极柱的全面覆盖。
Walvision's (Nanjing) blue-film six-side full-inspection equipment adopts a multi-station coordinated design, equipped with 2D, 2.5D and 3D imaging systems, achieving comprehensive coverage of the cell's top, bottom, two large faces, two side faces, the explosion-proof valve and the terminal post.
独创的光度光控成像系统将光源、控制器、相机调节集成一体，光源由内部直驱点亮，无需走延长线，大幅提升高速工况下的稳定性；自带相机微调支架，规避机构安装的不稳定因素，保证光效一致性。
The proprietary photometric light-control imaging system integrates light source, controller and camera adjustment into one unit; the light source is driven directly from inside without extension cables, greatly improving stability under high-speed conditions. A built-in camera fine-tuning bracket eliminates instabilities from mechanical mounting, ensuring consistent optical performance.
方案的核心竞争力在于自研的三套成像技术，可按缺陷类型与场景灵活组合：
The core competitiveness of the solution lies in three proprietary imaging technologies that can be flexibly combined by defect type and scenario:
采用白光1、白光2、红外、同轴四通道分时频闪，一次扫描获取四组不同光照图像：白光凸显表面划伤与异物，红外穿透蓝膜捕捉膜下异物，同轴光抑制高反光干扰。精度 0.041mm，运动速度 500mm/s，适用于包膜前后产品的五面检测，均有优异应用效果。
Uses four channels—white light 1, white light 2, infrared and coaxial—with time-division strobe; a single scan captures four images under different lighting: white light highlights surface scratches and foreign objects, infrared penetrates the blue film to capture sub-film foreign objects, and coaxial light suppresses high-reflection interference. Resolution 0.041 mm, speed 500 mm/s, suitable for five-face inspection before and after wrapping, with excellent results.
采用条纹反射法，投射正弦光斑至表面，经相位计算将调制条纹转换为高度信息，一次扫描输出六张预处理图：
Adopts the fringe reflection method, projecting sinusoidal patterns onto the surface; phase calculation converts modulated fringes into height information, outputting six pre-processed images in a single scan:
曲率图——深度特征提取
Curvature map — depth feature extraction
标准图——轮廓标定定位，消除不均匀影响
Standard map — contour calibration & positioning, removing unevenness effects
光泽比图——表面异色、脏污类缺陷
Gloss-ratio map — surface discoloration and contamination defects
镜面反射图——高反区域的细小瑕疵
Specular reflection map — fine defects in highly reflective regions
漫反射图——漫射区域异色、脏污
Diffuse reflection map — discoloration and contamination in diffuse regions
反曲率图——反曲率深度特征
Inverse-curvature map — inverse-curvature depth features
该方案专攻反光物体表面的细微瑕疵及 2.5D 缺陷，是蓝膜高反光表面检测的利器。
This solution specializes in fine surface flaws and 2.5D defects on reflective objects, making it a powerful tool for inspecting highly reflective blue-film surfaces.
通过四分区或五分区照明，从不同方向依次照射，利用阴影恢复表面相对高度特征。生成六种预处理图像：最大值融合图、相对高度图、彩色融合图、灰度融合图、反射率图、法向量图。
Through four-zone or five-zone illumination, light is cast sequentially from different directions, using shadows to recover relative surface height features. It generates six pre-processed images: max-fusion map, relative-height map, color-fusion map, grayscale-fusion map, albedo map and normal map.
该方案具备两大独占性优势：
This solution offers two exclusive advantages:
棱边无盲区：相机垂直产品，多角度光路照亮各棱边信息，可区分凹/凸缺陷，实现棱边缺陷的全覆盖检测。
Edge blind-spot-free: the camera is perpendicular to the product; multi-angle light paths illuminate each edge, distinguishing concave/convex defects and achieving full coverage of edge defect inspection.
膜下异物可见：红外光照条件下，膜下异物、气泡清晰可辨，一个工位即可同时完成表面与膜下缺陷检测。
Sub-film foreign objects visible: under infrared illumination, sub-film foreign objects and bubbles are clearly distinguishable; a single station simultaneously completes surface and sub-film defect inspection.
某头部动力电池厂在电芯包蓝膜外观全检环节曾长期依赖人工目检，人力投入巨大，且检测标准和漏废率不可控。上线华视锂电六面全检 AOI 方案后，良率提升 20%（关键项漏检率为 0，非关键项压至 2% 以内），过杀率控制在 2.5%，已有型号换型时间缩短至 30 分钟以内，实现一键切配方、非技术人员即可操作。客户工艺负责人评价：
A tier-1 power battery manufacturer long relied on manual visual inspection for post-wrapping blue-film appearance inspection—huge labor input, with uncontrolled standards and scrap/escape rates. After deploying Walvision's (Nanjing) lithium-cell six-side full-inspection AOI solution, yield improved by 20% (escape rate 0% on critical items, within 2% on non-critical), over-kill controlled at 2.5%, changeover time for existing models shortened to under 30 minutes, enabling one-click recipe switching and operation by non-technical staff. The customer's process lead commented:
华视集团旗下华视智能与锐奇精测、上川精密构成"技术三角"，定位于精密模具及智能检测设备制造商，立足锂电、钙钛矿、半导体、功能膜等行业，具备从涂布一致性到全质量闭环的整体方案能力。技术团队横跨光电测量、核检测、图像处理、流体力学与精密制造，掌握测量传感器、AI 算法、光度立体成像等关键技术，主要产品通过 CE、UL 认证。
Within Walvision Group, Walvision (Nanjing) together with Reechi (Changzhou) and Kamikawa (Wuxi) form a "technology triangle." Positioned as The Manufacturer of Precision Dies and Intelligent Inspection Equipment, the group serves lithium batteries, perovskite, semiconductors and functional films, with end-to-end capability from coating consistency to full-quality closed loop. Its technical team spans optoelectronic measurement, nuclear detection, image processing, fluid dynamics and precision manufacturing, mastering key technologies such as measurement sensors, AI algorithms and photometric stereo imaging; main products are CE- and UL-certified.
华视对"质量"的执着，不止于把数据测得更精准，更在于让制造过程中那些容易被忽视的风险真正被发现。
Walvision's obsession with "quality" goes beyond measuring data more precisely—it is about making the easily overlooked risks in manufacturing truly detectable.
电芯蓝膜外观全检作为保障电芯安全与一致性的关键环节，正从人工目检、传统视觉检测迈向"全检 + AI + 2.5D"的智能检测新范式。
As a critical link in ensuring cell safety and consistency, blue-film appearance inspection is moving from manual and traditional vision inspection toward a new intelligent paradigm of "full inspection + AI + 2.5D".
华视智能以三大成像技术构筑检测壁垒，以集团精密制造与智能检测的全栈能力赋能产业升级，让质量更可见，让生产更可控，让每一次制造升级都更有确定性。
Walvision (Nanjing) builds inspection barriers with its three imaging technologies and empowers industrial upgrading with Walvision Group's full-stack capabilities in precision manufacturing and intelligent inspection—making quality more visible, production more controllable, and every manufacturing upgrade more certain.
华视集团重磅亮相 2026 高工锂电峰会，成套涂布检测方案直击行业量产痛点！