Przedmiot zlecenia: Validation tests for NMC batteries. Zamawiający: Solaris Bus & Coach sp. z o.o. Kategoria: Dostawy. Lokalizacja realizacji: Bolechowo-Osiedle, wielkopolskie. Termin składania ofert: 21.09.2026 23:59. Kod CPV: 31422000-0, 31434000-7, 72242000-3, 73100000-3, 73300000-5. Zakres podany w publicznym źródle: Description of the subject of the contract a. Brief description of the subject of the contract: The subject of the contract is a service involving the testing of NMC-type Li-ion batteries intended for use in Low Entry and Normal Floor intercity buses. The tests will involve verifying the key electrical and physical parameters of the batteries in order to confirm their safety and reliability. The work will be carried out as part of a project aimed at developing an innovative range of hydrogen-electric intercity buses. The test subject comprises a single battery system with a capacity of 399 Ah and a rated voltage of 670 V. The scope includes: • Electrical and environmental tests (cycling, power tests, temperature) • Assessment of BMS functionality • Analysis of operating parameters across various temperature ranges and SOC levels • Assessment of charge and discharge performance, operation in bus driving conditions, internal resistance, cell balancing efficiency, and temperature distribution • Preparation of a report which consist of: o general information about the Contactor, o the test station and equipment description (with parameters) and photographical documentation of it, o detailed tests time-line, product preparation details and product parameters, o description of each test step with parameters and the procedure, o results of each test presentation i.e. graphical or tabular, o summary of each test part, o all parts results and summary, o final conclusions with key findings and recommendations. b. Purpose of the contract: The aim of the contract is to develop and optimize a new generation of NMC battery systems. Conducting these tests will enable the identification and implementation of innovative solutions that enhance battery performance, safety and lifespan, which is crucial for improving the overall performance and reliability of future bus models. c. Detailed description of the subject of the contract: • HV Safety tests – earthing verification, resistance measurements, dielectric strength, BMS functionality, visual inspection • Tests – Part 1 at 25°C: o 5 full charge and discharge cycles, charged at a maximum current of 0.3C and current map, terminated when maximum cell voltage reach 4.086 V, discharge with 0.3C current terminated when minimum cell voltage reach 3.264V. o Pulse power tests. Pulse tests at 1C current every 10% SOC whilst discharging the battery in the range from 90% to 10% SOC with 0.3C current. Charged to 100% (CC-CV, 0.3C, cut-off when maximum cell voltage reach 4.086 V). o Bus driving profile cycling. Discharge/charge cycle in the range of 90%–10% SOC (charging/discharging pulses at 0.1-0.5C due to Ordering Party bus driving profile), and recharging to 100% at 1C). 1-hour break for cell balancing. The whole process repeated 9 times (overall 10 cycles). • Tests – Part 2 at 35°C ambient and coolant temperature: o 5 full charge and discharge cycles, charged at a maximum current of 0.3C and current map , terminated when maximum cell voltage reach 4.086 V. o Pulse power tests. Pulse tests at 1C current every 10% SOC whilst discharging the battery in the range from 90% to 10% SOC with 0.3C curre