Lithium-ion Cell Assembly Mid-Stage Process Test Solution

Changzhou Hopetech Electronic Technology Co., Ltd.Founded in 2009,  is a national-level high-tech enterprise. We specialize in R&D and manufacturing of high-precision test & measurement instruments, participate in the formulation of national metrology standards, and deliver import-substitution solutions. Hopetech supplies end-to-end electrical performance test instruments for the new-energy lithium-battery industry.

During lithium-ion cell assembly, defects including abnormal internal resistance, voltage dispersion, failed grounding loops and hidden self-discharge risks are mostly generated in this stage. Targeting cell formation, sorting, final inspection and housing-grounding reliability, Hopetech builds a synergistic matrix of interconnected test instruments. It covers post-formation initial screening, capacity-grading & cell matching, high-voltage module testing, pre-warehousing final inspection and housing-grounding reliability verification. All instruments support PLC production-line communication, and adapt to both lab sampling and mass-production full inspection. We serve lithium-battery manufacturers worldwide.

✅ HT3561/HP3561A Economy Battery Resistance Tester | Mass-production Initial-screening Gatekeeper

Role: First-line screening after cell formation.

Function: Fast AC-IR & OCV measurement to weed out obvious defective cells. Pain points solved: Blocks faulty cells from costly downstream aging and capacity-grading processes, cutting material & labor waste for high-volume low-cost pre-screening.

✅ HT3563/D High-precision Battery Resistance Tester | Cell-matching Sorter

Role: Precision tester post capacity-grading, before cell assembly.

Function: High-accuracy multi-channel scanning for cell IR and voltage sorting & matching. Pain points solved: Eliminates pack inconsistency, charge-discharge imbalance and local overheating caused by scattered cell resistance-voltage data.

✅ HT3564/L/H High–voltage Battery Resistance Tester | High–voltage Module Tester Role: Dedicated tester for high-voltage cells and small packs.

Function: Up to 1500 V test voltage; multi-channel IR & total-voltage measurement. Pain points solved: Covers test demands ordinary instruments cannot handle; detects hidden inconsistency and secures finished high-voltage module reliability.

✅ HT3568/A Battery Comprehensive Tester | Pre–warehouse Final Inspector

Role: All-in-one final-test station after cell aging & standing.

Function: Synchronous OCV, AC-IR, DC-IR and fast self-discharge screening in one unit. Pain points solved: Avoids missed defects from single-parameter testing; boosts EOL efficiency and catches cells with potential self-discharge risks.

✅ CHT9931A High–current Ground Continuity Tester | Cell–housing Safety Checker Role: Safety detector for steel-cased & aluminum-cased cells.

Function: 0-100 A adjustable DC output to measure housing-ground-loop conduction resistance. Pain points solved: Prevents electrified housing, electric-shock and equipment hazards caused by poor ground-loop contact; verifies grounding-path integrity.

Hopetech’s complete set of test instruments for cell-assembly mid-stage does not operate as standalone units. Instead, they form a coordinated full workflow: Initial Screening → Sorting → High-voltage Module Test → Comprehensive Final Inspection → Housing-safety Validation.

All instruments support automated production-line communication interfaces, balancing high-volume mass-production efficiency and laboratory R&D verification. They help lithium-battery manufacturers cut scrap rates and avoid potential safety hazards in downstream modules and finished battery packs.