battery machine and materials solution

Pinery Gong

Pinery Gong, Principal Engineer at TOB NEW ENERGY
Pinery Gong
Hoofdingenieur
XIAMEN TOB NEW ENERGY TECHNOLOGY Co., Ltd.
Pinery Gong is een batterijassemblageproces- en opbrengstingenieurBij de productie van pouch-, stalen-, prismatische aluminium- en energieopslagcellen heeft zijn werk de defectpercentages consequent teruggebracht van enkele procentpunten tot delen per miljoen — lekkage van6% tot 60 ppmelektrodebreuk van10% tot 80 ppm, tabdefecten van20% tot 500 ppmHij heeft de PACK-opbrengst verhoogd van85% tot 99%, verhoogde PACK-uitvoer van500 tot 15.000 eenheden per shiften leverde jaarlijkse kostenbesparingen op.meer dan 5 miljoen CNYHij heeft procesteams van maximaal 40 ingenieurs opgebouwd en geleid.

In één oogopslag

60 ppmHet percentage lekkagedefecten is gedaald van 6%.
99%De opbrengst van de verpakking is gestegen van 85%.
30×De PACK-output neemt per shift toe.
5M+ CNYJaarlijkse kostenbesparing gerealiseerd
40Grootste procesteam ooit opgebouwd en geleid.

Record voor opbrengst- en defectreductie

Elk cijfer hieronder is gekoppeld aan een specifieke werkgever en periode. Defectpercentages worden weergegeven zoals ze oorspronkelijk zijn gemeten: percentages wanneer het uitgangspunt een percentage was, ppm wanneer het resultaat delen per miljoen bereikte.

Consumenten- en stalen blikcellenWanxiang Technology (Microvast Electronics) · 2020.07 – 2022.11 · Procesteam van 15 personen

Metrisch Voor Na Opmerking
Elektrolytlekkagedefect 6% 60 ppm Gericht verbeteringsprogramma voor een kernstoringsmodus
Elektrodebreukdefect 10% 80 ppm Grondige analyse van de oorzaken van problemen met de hantering en wikkeling van elektroden.
Algemeen slagingspercentage van de cel 75% 90% Gecombineerde opbrengst gedurende het gehele celproces
PACK-slagingspercentage 85% 99% Verpakkingsassemblagelijn
PACK-output per shift 500 eenheden 15.000 eenheden Volledige automatisering en procesiteratie
Totale arbeidskosten Basislijn -20% Samenvoeging van activiteiten, procesoptimalisatie, rationalisatie van het personeelsbestand

Prismatische aluminium behuizing voor energie- en opslagcellenGeely Technology Lixin Energy · 2022.11 – 2024.04 · Hoofd Procesafdeling, team van 40 personen

Metrisch Voor Na Opmerking
kortsluitsnelheid van NCM-mangaancellen 10% 0,5% Vochtregulatie in de werkplaats, herontwerp van de buigconstructie, modernisering van de apparatuur
Defect door verkeerde uitlijning van de separator 6% 0,2% Systematische aanpassing van processen en apparatuur
Slagingspercentages van projecten (meerdere programma's) 70–88% 93–95% DX45AH, NCM40, Geely G2, 50AH opslag — B/C-monster volgens SOP
Jaarlijkse productiekosten Basislijn −5M+ CNY Cumulatieve besparingen door systematische verbetering van processen en apparatuur.
Omvang van het verwerkingsteam 10 40 De procesorganisatie van de locatie in Zhenjiang is volledig opnieuw opgebouwd.

Prismatische energiecellen — inbedrijfstelling van een nieuwe productielijnCITIC 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 ppmen er werden meer dan honderd nieuwe modellen in massaproductie genomen), stalen behuizingen en consumentencellen (Wanxiang, dat producten levert aan klanten zoals OPPO en Amazon), prismatische aluminium behuizingen voor stroom en opslag (Geely Lixin, CITIC Lixin), en prismatische plus pouch-assemblage bij Envision AESC. Loopbaanoverzicht bij de werkgevers die op deze pagina worden genoemd.

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