
How to do the test report? Why do you need to do product inspection? Third-party testing institutions provide product testing services in various industries, and there are many cooperative laboratories across the country, mainly serving companies, enterprises, individual businesses, universities and scientific research.
Sample size: according to the size of the sample to choose the sample or door-to-door
display style: electronic
version of the detection cycle: 3-15 working days (expedited).
Electric vehicle batteries are the source of power for electric vehicles. The vast majority of electric vehicles are equipped with lead-acid batteries, which have low costs and high cost-effectiveness. Because this type of battery can be charged and reused, it is called a "lead-acid battery". In 1860, France's Prante invented a battery using lead as the electrode, which was the predecessor of lead-acid batteries. There are four types of power batteries that can be used by electric bicycles, namely valve regulated lead-acid maintenance free batteries, colloidal lead-acid batteries, nickel hydrogen batteries, and lithium-ion batteries. Lead acid batteries: Lead acid batteries are widely used and researched by various electric vehicles in various countries due to their low price, abundant material sources, high specific power, mature technology and manufacturing process, and high resource recovery rate. Electric bicycles have been widely accepted as labor-saving, convenient, fast, comfortable, affordable, and zero emission personal transportation tools, and have received attention from relevant national departments. The research group on the development strategy of the light electric vehicle industry, participated by the Development Research Center of the State Council, the National Development and Reform Commission, the Ministry of Construction, and the Ministry of Science and Technology, has submitted a report on the development strategy of the light electric vehicle industry. The national ownership of electric bicycles has reached over 30 million units. More than 95% of electric bicycles use valve regulated lead acid batteries. The vast majority of commercialized electric bicycles use sealed lead-acid batteries, which do not require frequent water replenishment during use and are maintenance free. The main chemical reaction is as follows: PbO2+2H2SO4+Pb ← charging and discharging → 2PbSO4+2H2O lead-acid battery When charging, the sponge like lead at the anode and cathode of lead sulfate is released into the electrolyte, where the fixed sulfuric acid component is converted into sponge like lead and lead oxide, respectively. The concentration of sulfuric acid in the electrolyte continuously increases; On the contrary, during discharge, the lead oxide in the anode and the sponge like lead on the cathode plate react with sulfuric acid in the electrolyte to form lead sulfate, while the concentration of sulfuric acid in the electrolyte continuously decreases. When a lead-acid battery is undercharged, the lead sulfate in the cathode and anode plates cannot be completely converted into sponge like lead and lead oxide. If the battery is undercharged for a long time, it will cause lead sulfate crystallization, causing the plates to sulfurize, and the battery quality to deteriorate; On the contrary, if the battery is overcharged, the amount of oxygen generated by the anode is greater than the adsorption capacity of the cathode, which increases the internal pressure of the battery, leads to gas leakage, reduces the electrolyte, and may also lead to the softening or detachment of active substances, greatly shortening the battery life P>
Function of testing report:
1. Project bidding: Issue authoritative third-party CMA/CNAS qualification report
2. Online e-commerce platform entry: Quality inspection report recognized by major e-commerce platforms 3. Used as a sales report: issuing legally effective testing reports to make consumers more confident 4. Papers and research: Provide professional personalized testing needs 5. Judicial services: providing scientific, fair, and accurate testing data 6. Industrial problem diagnosis: Verify the troubleshooting and correction of industrial production problems100% inspection and testing process:
1. Telephone communication and confirmation of requirements
2. Recommend solutions and confirm quotations 3. Mail samples and arrange testing 4. Progress tracking and result feedback 5. Provide reports and after-sales service 6. If urgent or priority processing is requiredTesting and testing characteristics:
1. The testing industry is fully covered, meeting different testing needs
2. Fully cover the laboratory and allocate localized testing nearby3. Engineers provide one-on-one services to make testing more accurate
4. Free initial testing, with no testing fees charged
5. Self service order delivery for free on-site sampling
6. Short cycle, low cost, and attentive service 7. Possess authoritative qualifications such as CMA, CNAS, CAL, etc 8. The testing report is authoritative and effective, and is generally used in Chinatesting process
,telephone communication, confirm the demand;
2. Recommend the plan and confirm the quotation;
3. Mailing samples and arranging testing;
4. Progress tracking and result feedback;
5. Issue reports and after-sales service;
6. If it needs to be expedited, priority processing;