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Dongguan Juneng New Energy Technology Co., Ltd.
137 5142 6524（Miss Gao）
susiegao@power-ing.com
Xinghuiyuan High tech Industrial Park, Dalang Town, Dongguan City, Guangdong Province
From cell to battery pack: Unveiling the “coming-of-age” of a power battery — touring Jueneng New Energy’s factory to see how PACK defines the vehicle’s safety limits.
time：2026-07-28
A cell is like an uncarved unprocessed Jade. When it enters the PACK factory which gathers new energy, it starts a transformation journey from "monomer cells" to "system organs. The end of this journey is not a simple physical stack, but a precision engineering related to the safety, performance and life of the whole vehicle. Today, let's walk into the production line of energy-gathering new energy and witness the "adult ceremony" of a power battery ".
I. Incoming inspection: The "Golden Eye" of the first checkpoint"
arrive at the first stop of the factory on cell, not the production line, but the incoming inspection center. Here, each cell has to undergo strict screening of more than ten parameters such as capacity, internal resistance, voltage, and self-discharge rate.
"What we implement is the" zero tolerance "grouping standard. "The quality director of energy gathering new energy introduced," cell with capacity difference exceeding 1% and internal resistance difference exceeding 2% are not allowed to enter the same module. "This standard is much higher than the industry average, but it can effectively avoid the" short board effect "in the cycle process-the whole package life is no longer dragged down by the worst cell. Every day, hundreds of cell are screened, graded, and coded here. Only "top students" can get the qualification to enter the next level.
II. Module assembly: "surgical operation" in welding workshop"
through the inspection, cell entered the module assembly process, which is one of the areas with the highest technical content in the PACK factory.
The new energy gathering energy adopts full-automatic laser welding production line, and the welding precision is controlled within ± 0.02mm. Each Weld has to undergo AI visual inspection and X-Ray nondestructive inspection. Virtual welding, pores and cracks have no hiding place. "Welding quality directly determines the internal resistance and long-term reliability of the whole package. "The process engineer pointed to the real-time monitoring screen to explain," our welding defect rate is controlled below 50PPM, that is, no more than 50 defects per million solder joints. "
what deserves more attention is the heterogeneous metal connection process. If the connection between copper bar and aluminum row is not handled properly, electrochemical corrosion will occur during long-term use, resulting in soaring contact resistance. The new energy source adopts ultrasonic welding and nickel plating transition scheme to eliminate this hidden danger from the source.
III. Thermal Management Integration: battery pack "thermoregulation system"
after the module is assembled, enter the thermal management system integration link. This is the key variable that determines the battery life in PACK design.
in the selection of heat barrier material, the new energy source adopts aerogel composite heat proof mat, and the thermal conductivity is as low as 0.02W/(m · K). Even if a single cell is abnormal, the insulation layer can lock the heat in the local area, thus gaining valuable time for the safety of the whole package.
IV. BMS implantation: battery pack "smart brain"
battery Management System (BMS) is PACK's "nervous system", and new energy sources insist on independent development.
Its self-developed BMS adopts dual-core redundant architecture, the voltage sampling accuracy reaches ± 1mV, the temperature sampling accuracy is ± 1℃, and the SOC estimation error is controlled within 3%. More importantly, the functional safety level-the BMS of energy gathering new energy has passed ISO 26262 ASIL-D certification, which is the highest safety level in the field of automotive electronics.
v. Factory test: the ultimate test of "extreme challenge"
the test before the offline is the graduation ceremony of battery pack ".
The testing center of energy gathering new energy is equipped with a complete set of facilities such as charging and discharging equipment, acupuncture test bench, extrusion testing machine, high and low temperature environment box, etc. Each piece of battery pack has to undergo basic projects such as capacity calibration, internal resistance testing, insulation testing, and air tightness testing, as well as safety verification such as overcharge, overdischarge, short circuit, and vibration.
"Our air tightness test adopts helium mass spectrometer leak detection, and the sensitivity can reach 10 LEDs Pa · m & sup3;/s. "The test engineer stressed," This means that even the leakage of the needle tip size is nowhere to hide. "Test data is automatically archived and bound to each dedicated QR code of battery pack to achieve traceability throughout the life cycle.
From cell to battery pack, the new energy source used hundreds of processes and thousands of parameters to write a complete "growth file" for each battery ". Here, <a href="https://power-ing.com/">PACK it is not a simple assembly, but a systematic discipline integrating material science, precision manufacturing, thermodynamics and software engineering. When this battery pack is loaded into the whole vehicle, it carries not only electric energy, but also the commitment of new energy sources to safety, reliability and quality.
Contact us
Dongguan Juneng New Energy Technology Co., Ltd.
137 5142 6524（Miss Gao）
susiegao@power-ing.com
Xinghuiyuan High tech Industrial Park, Dalang Town, Dongguan City, Guangdong Province
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