battery machine and materials solution

Pinery Gong

Pinery Gong, Principal Engineer at TOB NEW ENERGY
Gong de Pinery
Ingénieur principal
XIAMEN TOB NEW ENERGY TECHNOLOGY Co., Ltd.
Pinery Gong est une batterieIngénieur en processus d'assemblage et rendementDans les emballages à poche, les boîtes en acier, les coques prismatiques en aluminium et les piles de stockage d'énergie, ses travaux ont permis de réduire systématiquement les taux de défauts de quelques points de pourcentage à quelques parties par million — les fuites provenant de6 % à 60 ppm, fracture d'électrode due à10 % à 80 ppm, défauts d'onglet de20 % à 500 ppmIl a augmenté le rendement de PACK à partir de85 % à 99 %, sortie PACK extraite deDe 500 à 15 000 unités par quart de travailet ont permis de réaliser des économies annuellesplus de 5 millions de yuansIl a constitué et dirigé des équipes de processus comptant jusqu'à 40 ingénieurs.

Aperçu

60 ppmTaux de défauts liés aux fuites, en baisse par rapport à 6 %
99%Rendement d'emballage, en hausse par rapport à 85 %
30×Augmentation de la production de PACK par quart de travail
Plus de 5 millions de CNYÉconomies annuelles réalisées
40La plus grande équipe de processus constituée et dirigée

Enregistrement du rendement et de la réduction des défauts

Chaque chiffre ci-dessous est associé à un employeur et à une période précis. Les taux de défauts sont exprimés selon leur mode de mesure initial : en pourcentage lorsque le point de départ était un pourcentage, et en ppm lorsque le résultat atteignait des parties par million.

Cellules grand public et cellules métalliquesWanxiang Technology (Microvast Electronics) · Juillet 2020 – Novembre 2022 · Équipe de production de 15 personnes

Métrique Avant Après Note
Défaut de fuite d'électrolyte 6% 60 ppm Programme d'amélioration dédié à un mode de défaillance principal
Défaut de fracture de l'électrode 10% 80 ppm Analyse des causes profondes liées à la manipulation et à l'enroulement des électrodes
Taux de réussite global des cellules 75% 90% Rendement composite tout au long du processus cellulaire
taux de réussite PACK 85% 99% chaîne d'assemblage d'emballages
Production de PACK par poste 500 unités 15 000 unités Déploiement complet de l'automatisation et itération des processus
coût total de la main-d'œuvre Ligne de base −20% Fusion des opérations, optimisation des processus, rationalisation des effectifs

Cellules de puissance et de stockage à enveloppe prismatique en aluminiumGeely Technology Lixin Energy · Novembre 2022 – Avril 2024 · Responsable du département Procédés, équipe de 40 personnes

Métrique Avant Après Note
taux de court-circuit de la cellule NCM-manganèse 10% 0,5% Contrôle de l'humidité en atelier, refonte de la structure de pliage, modernisation des équipements
Défaut d'alignement du séparateur 6% 0,2% Modification systématique des processus et des équipements
Taux de réussite des projets (programmes multiples) 70 à 88 % 93–95% DX45AH, NCM40, Geely G2, stockage 50AH — Échantillon B/C selon la procédure opératoire normalisée
coût de production annuel Ligne de base −5M+ CNY Économies cumulées grâce à l'amélioration systématique des processus et des équipements
Taille de l'équipe de processus 10 40 J'ai reconstruit de A à Z l'organisation des processus du site de Zhenjiang.

Cellules photovoltaïques prismatiques — mise en service de la nouvelle ligneCITIC Lixin Energy · 2017.04 – 2020.07 · Principal Process Engineer, 30-person team

Metric Before After Note
Core process pass rates Below target ≥99% Across all operations after winding, assembly and filling optimisation
Line capacity Baseline ≈2× 4 GWh Korean-imported automated line, commissioning through to volume

3C pouch cellsZhongshan Tianmao Battery · 2012.03 – 2015.12 · and TCL Jinneng · 2009.07 – 2012.02

Metric Before After Note
Tab defect rate 20% 500 ppm TCL Jinneng — tab defects and cell surface deformation
Process cycle time Baseline −25% Baking, filling and hot-press optimisation
Material cost Baseline −5% Material loss system optimisation
Core operation pass rates Variable ≥99% stable Zhongshan Tianmao — parameter iteration and equipment upgrade

Career Timeline

  • present·XIAMEN TOB NEW ENERGY TECHNOLOGY Co., Ltd.

    Principal Engineer— battery assembly process engineering and production line technical support.

  • 2024.04 – 2024.07·Envision AESC

    Principal Process Development Expert. Product engineering for prismatic and pouch cell assembly, new process transfer to mass production, and process enablement across global manufacturing sites. Delivered the assembly BOM, process specifications, PFMEA and control plans; led C-sample pilot to mass-production conversion. Built a unified assembly process library across sites, and delivered three improvement programmes at the Jiangyin site covering Lyric line equipment damage, stacking efficiency and aluminium-shell assembly efficiency.

  • 2022.11 – 2024.04·Geely Technology Lixin Energy

    team 10 → 40 Process Department Head. Full process technical management for prismatic aluminium-shell cells. Rebuilt the Zhenjiang site process organisation from scratch, established role definitions, assessment mechanisms and workflows to meet automotive OEM audit standards. Led DX45AH, NCM40, Geely G2 and 50AH storage programmes from B/C sample through to SOP.

  • 2020.07 – 2022.11·Wanxiang Technology (Microvast Electronics)

    15-person team Senior Process Manager. Steel-can and pouch cell process optimisation, automated line rollout, and customer quality assurance. Delivered dozens of new products from pilot to mass production for customers includingOPPO and Amazon. Built the factory efficiency accounting and trial-production management systems.

  • 2017.04 – 2020.07·CITIC Lixin Energy

    30-person team Principal Process Engineer. Built the first full set of assembly-section process documentation from nothing — parameter standards, PFMEA, SOPs and control plans. Full participation in acceptance, commissioning and production ramp of a 4 GWh Korean-imported automated line. Developed winding core-extraction improvements, multi-tab bending and electrolyte wetting optimisation.

  • 2016.10 – 2017.04·Chilwee Chuangyuan Group

    Senior Process Engineer. Participated in the setup of the Fourth Business Division — factory planning, process route design and early process documentation. Led improvement of secondary sealing, formation and packaging operations.

  • 2012.03 – 2015.12·Zhongshan Tianmao Battery

    Principal Process Engineer. 3C pouch cell process development across electrode preparation, winding, packaging and electrolyte filling. Built the full MI process documentation system from scratch and introduced over one hundred new models into mass production. Led adoption of ultra-thin separator, aluminium-plastic film and tab adhesive materials.

  • 2009.07 – 2012.02·TCL Jinneng Battery

    PE Process Engineer. Pouch cell assembly process maintenance, defect closure and automation upgrade. Led rollout of automated winding equipment.

Technical Focus

  • ▸Battery assembly process — winding, stacking, electrolyte filling, sealing, formation
  • ▸Yield engineering — root-cause analysis and closed-loop correction of short circuit, leakage, internal resistance and dimensional defects
  • ▸Process documentation systems — process specifications, PFMEA, SOP, control plans, standard work hours
  • ▸New line commissioning — equipment requirement definition, technical agreement review, FAT/SAT acceptance, jig and fixture validation
  • ▸Industrial engineering — line layout, takt time, line balancing, capacity debottlenecking
  • ▸Multi-site process standardisation and technical library development
  • ▸Team building — process organisation design, role definition and assessment systems
PFMEA 8D SOP / Control Plan FAT / SAT IE / Line Balancing CPK NPI Cost Reduction

Frequently Asked Questions

What kind of yield problems does Pinery Gong work on?

Assembly-section defects that sit between process and equipment: electrolyte leakage, internal short circuit, electrode fracture, tab defects, separator misalignment, internal resistance and dimensional deviation. The working method is root-cause analysis with closed-loop correction across winding, stacking, electrolyte filling, sealing and formation — typically taking a defect mode from percentage-level down to parts per million rather than trimming it by a few points.

How was electrolyte leakage reduced from 6% to 60 ppm?

Through a dedicated improvement programme on a core failure mode at Wanxiang Technology (Microvast Electronics), 2020–2022, leading a 15-person process team. The same programme took electrode fracture from10% to 80 ppmand overall cell pass rate from75% to 90%. Performed at that employer and presented as career history, not as a performance guarantee for a new project.

How was PACK output raised from 500 to 15,000 units per shift?

A thirty-fold increase achieved through full automation rollout combined with process iteration, at Wanxiang Technology (Microvast Electronics). In the same period PACK pass rate moved from85% to 99%and total labour cost fell20%through operation merging, process optimisation and headcount rationalisation. Career history at that employer.

What experience does he have with prismatic aluminium-shell cells?

As process department head at Geely Technology Lixin Energy (2022–2024) he held full process technical management for prismatic aluminium-shell power and storage cells. NCM-manganese cell short-circuit rate fell from10% to 0.5%through workshop humidity control, bend structure redesign and equipment upgrade; separator misalignment fell from6% to 0.2%. He led the DX45AH, NCM40, Geely G2 and 50AH storage programmes from B/C sample through to SOP, lifting project pass rates from 70–88% to93–95%. Career history at that employer.

Has he commissioned new production lines?

Yes. At CITIC Lixin Energy (2017–2020) he took full part in acceptance, commissioning and production ramp of a4 GWh Korean-imported automated line, roughly doubling line capacity, and built the first complete set of assembly-section process documentation from nothing — parameter standards, PFMEA, SOPs and control plans. Core process pass rates reached99% or aboveafter winding, assembly and filling optimisation. His new-line work covers equipment requirement definition, technical agreement review, FAT/SAT acceptance and jig validation. Career history at that employer.

Can he build a process organisation, not just fix defects?

Yes. At Geely Technology Lixin Energy he rebuilt the Zhenjiang site process organisation from scratch, growing the team from10 to 40 engineersand establishing role definitions, assessment mechanisms and workflows to meet automotive OEM audit standards. At Envision AESC he built a unified assembly process library across global manufacturing sites, delivering assembly BOM, process specifications, PFMEA and control plans. Career history at those employers.

Which cell formats has he worked across?

Four: 3C pouch cells (TCL Jinneng and Zhongshan Tianmao, where tab defects fell from20% to 500 ppmet plus d'une centaine de nouveaux modèles ont été introduits dans la production de masse), des cellules à boîtier en acier et des cellules grand public (Wanxiang, fournissant des produits à des clients tels qu'OPPO et Amazon), des cellules de puissance et de stockage à boîtier prismatique en aluminium (Geely Lixin, CITIC Lixin) et l'assemblage de poches prismatiques chez Envision AESC. Parcours professionnel chez les employeurs mentionnés sur cette page.

Résoudre un problème de rendement

Fuite, court-circuit, défauts dimensionnels ou débit de ligne : décrivez le symptôme et l’équipe d’ingénierie pourra vous aider à le diagnostiquer.

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