IEC 62619:2017 Secondary batteries containing alkaline or other non acidic electrolytes - Safety requirements for secondary lithium batteries used in industrial applications "was first published on February 13, 2017, and is a safety standard developed in the IEC standard system for batteries used in industrial equipment
The new standard IEC 62619:2022 was released on May 24, 2022. Compared to the 2017 version, the detailed changes in the new version are shown in the table below. For the changes in the new version, customers need to pay special attention to the following changes, which need to be carefully considered in the early design and development process:
● Added system lock requirements: equivalent to adding a redundant protection requirement, which is crucial for the safety of the battery system and can avoid user abuse in the event of a battery system failure
● The heavy object impact test method for bag shaped cells is the same as that for prismatic cells, which involves testing in both the side and wide directions. However, based on past experience, the side impact failure rate for soft bags is over 30%
● EMC requirements have been added. Although there are currently no specific testing requirements in the standard, considering the potential impact on EMC testing of end products, the end user may propose requirements. In product design and the use of electronic components, full consideration should be given to whether EMC requirements are met
IEC62619-a) New requirements for moving parts
Moving parts that have potential to cause human injuries should be applied using an appropriate design and necessary measures to reduce the risk of injuries, including those injuries that may be included during installation, while cells or battery systems are being incorporated into equipment Appropriate design and necessary measures should be taken to apply moving parts that may cause personal injury, in order to reduce the risk of injury, including possible injuries during the installation process of batteries or battery pack systems into the equipment IEC62619-b) added requirements for hazardous live parts; Hazardous live parts of the battery system shall be protected to avoid the risk of electric shocks, including during installation Dangerous live parts of the battery system should be protected to avoid the risk of electric shock, including during installation
IEC62619-c) New requirements for battery pack system design 5.6.2 Battery system design The voltage control function of the battery system design shall ensure that the voltage of each cell or cell block shall not exceed the upper limit charging voltage specified by the manufacturer of the cells, except in the case where the end devices provide the voltage control function In such a case, the end devices are considered as part of the battery system Refer to Note 2 and Note 3 in 3.1 2.
5.6.2 Battery System Design The voltage control function of the battery system design should ensure that the voltage of each battery or battery block does not exceed the upper charging voltage specified by the battery manufacturer, unless the terminal device provides voltage control function. In this case, the terminal device is considered a part of the battery system. Please refer to Note 2 and Note 3 in 3.12
IEC62619-d) added system locking function requirements When one or more cells in the battery pack system deviate from the operating area during operation, the battery pack system should have a non resettable function to stop operation, which does not allow users to reset or automatically reset. After checking that the status of the battery pack system complies with the battery pack system manufacturer's manual, the functionality of the battery system can be reset. According to its application, the battery pack system can allow for one final discharge, such as providing emergency functions. In this case, within the range where the cell does not cause a dangerous reaction, the cell limit value (such as the lower limit of discharge voltage or the upper limit of temperature) can be allowed to deviate once. Therefore, battery cell manufacturers should provide a second set of limit values, which should enable the cells in the battery pack system to accept a single discharge without dangerous reactions. After the last discharge, the battery cell must not be recharged
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