Introduction:
A test report is a document generated after testing, evaluating or inspecting a specific product, system, equipment or material, which contains the results, analysis, conclusions and possible recommendations or improvement measures of the test. Test reports are usually written by professional testing laboratories, certification bodies or relevant professionals, and their main purpose is to record and communicate key information during the testing process, so that relevant stakeholders (such as manufacturers, consumers, regulatory agencies, etc.) can understand the performance, safety, compliance and other aspects of the product.
First, safety standard testing:
It is very important to ensure that the mobile phone battery will not overheat, short circuit and other safety hazards during normal use and charging. In order to achieve this goal, mobile phone batteries need to be tested to strict safety standards, which involve the following:
1.1 Physical Structure Inspection: Check the outer packaging and physical structure of your phone's battery to make sure there are no cracks, dents, or other obvious damage, and that the case is intact.
1.2 Internal Component Inspection: Inspect the internal components of the battery, including electrodes, separators, electrolytes, etc., to ensure that their assembly and quality meet the standards and that there are no defects or foreign objects.
1.3 Outer packaging inspection: Inspect the outer packaging of the battery to ensure that the labels and markings are clearly visible and that the packaging materials meet the relevant safety requirements.
1.4 Charging circuit test: Test the charging circuit of the mobile phone battery, including the charging control chip, current sensor, etc., to ensure the stability of current and voltage during charging.
1.5. Battery management system testing: Detect the performance of the battery management system, including overcharge protection, over-discharge protection, temperature protection and other functions to prevent safety problems such as overheating, overcharging and over-discharging during charging or use.
1.6 Short Circuit Test: A short circuit test is performed to evaluate the safety performance of the battery in unexpected situations.
1.7 Overcharge and Over-Discharge Protection Test: Detect whether the battery can effectively prevent over-charge and over-discharge to avoid safety risks.
1.8 Temperature Control Test: Test the temperature change of the battery during charging and use to ensure that it will not cause safety hazards due to overheating.
Second, performance index detection:
The performance index test of the mobile phone battery is to evaluate its performance in actual use to ensure that the user's needs are met. The following are common mobile phone battery performance index test items:
2.1 Capacity test: Measure the capacity of a battery, usually measured in milliampere-hours (mAh). This can be tested by comparing the charge current and the discharge current to determine the amount of energy that the battery is capable of providing when fully charged.
2.2 Charge-Discharge Efficiency Test: Evaluates the efficiency of the battery during charging and discharging. The charging and discharging efficiency directly affects the energy conversion efficiency and service life of the battery.
2.3 Cycle life test: Carry out multiple charge-discharge cycle tests to simulate the charge-discharge process of the battery in actual use, and evaluate the performance degradation of the battery after multiple cycles.
2.4 Self-discharge rate test: Test the self-discharge rate of the battery when it is not in use, that is, the rate at which the battery discharges itself after being stored for a period of time. A battery with a lower self-discharge rate means it has a better ability to conserve energy.
2.5 Charge Rate Test: Test the charging rate of the battery, i.e., the time it takes for the battery to be charged, usually measured in hours. Fast charging technology has become one of the important features of many mobile phone batteries.
2.6 Discharge Curve Test: Track the voltage change of the battery over time during the discharge process to understand the performance of the battery in different discharge states.
2.7 Temperature Characteristic Test: Test the performance of the battery at different temperatures, including charge-discharge efficiency, self-discharge rate, etc., to evaluate the stability of the battery under various environmental conditions.
2.8 Safety Performance Assessment: Although safety performance is more oriented towards safety standard testing, performance aspects may also be involved, such as evaluating the effectiveness of temperature control and safety protection mechanisms during charging and discharging.
3. Environmental adaptability test:
Environmental suitability testing is essential for the stability and reliability of mobile phone batteries, and it involves the following:
3.1 Temperature Suitability Testing: Evaluate the performance of the battery under various temperature conditions by exposing the mobile phone battery to different temperature environments, including extreme high and low temperature environments. This helps determine the reliability and safety performance of the battery in extreme climatic conditions.
3.2 Humidity Suitability Test: Test the mobile phone battery in different humidity environments to evaluate its performance in humid environments. This helps determine the stability and durability of the battery in high humidity environments.
3.3 Charge-discharge rate adaptability test: The battery is tested at different charge-discharge rates to simulate different charging and discharging scenarios. This helps to evaluate the performance of the battery under fast charging and high discharge rates, ensuring that the battery can work stably and maintain good performance.
3.4 Cycle Adaptability Test: The battery is tested for multiple charge-discharge cycles to simulate the charge-discharge process under actual usage. This helps to evaluate the battery's performance, stability, and cycle life over long-term use.
3.5 Vibration Adaptability Test: During the design and manufacturing of mobile phone batteries, vibration adaptability tests are also usually carried out to simulate the vibration and vibration conditions that the phone may encounter during use, and to evaluate the stability and reliability of the battery under these conditions.
Fourth, charging safety test:
The charging safety test is one of the key tests to ensure that the mobile phone battery will not overheat, overcharge and other safety issues during the charging process. Here are some of the aspects of charging safety testing:
4.1 Charging Rate Test: Test the charging rate of the battery, that is, the time it takes for the battery to be charged. By monitoring the charging current and voltage, the charging rate is evaluated to be stable and meets the design requirements.
4.2 Charging temperature control: Detect the temperature change of the battery during the charging process, and evaluate whether the temperature control system in the charging circuit can effectively control the battery temperature and prevent overheating.
4.3 Safety protection measures during charging: Test the safety protection mechanism during charging, including overcharge protection, overcurrent protection, short-circuit protection, etc. These protective measures enable the detection of anomalies in time and the implementation of measures to ensure the safety of the battery charging process.
4.4 Charging Control Algorithm Testing: Evaluate the accuracy and stability of the charging control algorithm to ensure that the battery can be charged according to the design requirements during the charging process and avoid potential safety hazards during the charging process.
4.5 Voltage and current monitoring during charging: Monitor the voltage and current changes during charging to ensure that the voltage and current of the battery are within a safe range during charging to avoid problems such as overcharging or over-discharging.
5. Battery identification and certification:
Battery identification and certification is an important step in ensuring that your phone battery meets the requirements of relevant regulations and standards, and these certifications and certifications typically include the following:
5.1 CE certification: CE mark is a legal mark in the European Common Market, which indicates that the product meets the safety, health and environmental protection requirements of the European Union. For mobile phone batteries sold to the European market, CE certification is required.
5.2 RoHS Directive: The RoHS Directive is the European Union's directive on the restriction of hazardous substances in electrical and electronic products, which requires the content of hazardous substances in electronic products to reach certain limits. Mobile phone batteries need to comply with the relevant requirements of the RoHS Directive.
5.3 un38.3 Transport Test: UN383 is the test standard for the transportation of lithium batteries specified by the International Civil Aviation Organization to evaluate the safety of lithium batteries and their products during transportation. The phone battery needs to pass un383. Transport test to ensure its safe transportation.
5.4 Certifications in other regions: Depending on the requirements of the sales region, it may be necessary to meet the certification standards of other regions, such as FCC mark (USA), CCC certification (China), KC certification (Korea), etc.
Sixth, what are the test methods
Test methods can vary for different types of products and requirements. Here are some common test methods, including but not limited to:
6.1 Physical performance test:
6.1.1 Visual Inspection: Observe the appearance of the product and check for defects, damage, or foreign objects.
6.1.2 Dimensional Measurement: Measure the size of the product, including length, width, height, etc.
6.1.3 Weight Measurement: Measure the weight of the product to ensure that it meets the specified weight range.
6.1.4 Hardness Testing: Use equipment such as a hardness tester to test the hardness of the product.
6.2 Functional performance test:
6.2.1 Electrical performance test: Test the electrical parameters of the product, such as voltage, current, power, etc.
6.2.2 Efficiency test: Test the efficiency of the product, such as energy utilization, etc.
6.2.3 Performance index test: Test the performance indicators of the product, such as speed, accuracy, sensitivity, etc.
6.3 Safety Performance Test:
6.3.1 Electrical safety test: Test the electrical safety performance of the product, including insulation resistance, ground resistance, leakage current, etc.
6.3.2 Mechanical safety test: Test the mechanical safety performance of the product under normal use and unexpected conditions, such as impact resistance, protective performance, etc.
6.3.3 Chemical Safety Testing: Test whether the chemical components in the product meet safety standards, such as the content of harmful substances.
6.4 Environmental Adaptability Test:
6.4.1 Temperature suitability test: test the performance of the product under different temperature conditions.
6.4.2 Humidity Suitability Test: Test the performance of the product under different humidity conditions.
6.4.3. Vibration adaptability test: test the performance of the product in the vibration environment.
6.5 Durability Test:
6.5.1 Cycle Test: Test the cycle life of the product, such as the number of charge-discharge cycles.
6.5.2 Durability test: Test the durability of the product during long-term use, such as wear resistance, corrosion resistance, etc.
6.6 Certification Testing:
6.6.1 CE certification test: Test whether the product meets the CE certification requirements of the European Union.
6.6.2 FCC Certification Testing: Tests whether a product meets the certification requirements of the Federal Communications Commission of the United States.
6.6.3 Certification tests in other countries and regions: Conduct corresponding certification tests according to the requirements of the sales region.
Seventh, the processing cycle
The turnaround time for a test report depends on a variety of factors, including the following:
7.1 Complexity of the test project: The complexity of the test project has a direct impact on the time required for the test. Some simple tests may only take 7 business days, while complex tests can take weeks or even months.
7.2 Efficiency of testing facilities: Different testing facilities have different levels of work efficiency and processing speed. Some large test facilities may be working on multiple projects at the same time, so it may take longer to complete the test report.
7.3 Availability of test equipment and resources: The processing time of the test report also depends on the availability of test equipment and resources. If test equipment or resources are scarce, test cycles may be extended.
7.4 Customer Needs and Timelines: Customers may have specific requirements and timelines for the completion of test reports. Testing facilities will usually do their best to accommodate customer time requirements, but sometimes additional time may be required to complete the testing work.
7.5 Number and complexity of test items: If a project involves multiple test items or multiple samples, the processing time may increase accordingly.