CSA/ANSI C22.2 NO. 340:23

Preface This is the first edition of CSA/ANSI C22.2 No. 340, Battery management systems . It is one of a series of StandardDetails issued under Canadian Electrical Code, Part II and NFPA 70. For general information on the StandardDetails of the Canadian Electrical Code, Part II, see the Preface to the latest edition of CSA C22.2 No. 0. This Standard is considered suitable for use for conformity assessment within the stated scope of the Standard. This Standard was prepared by the Working Group on Battery Management Systems and endorsed by the Subcommittee on Energy Storage, under the jurisdiction of the Technical Committee on Industrial Products, and the Strategic Steering Committee on Electrical Safety, and has been formally approved by the Technical Committee. This Standard has been developed in compliance with StandardDetails Council of Canada requirements for National StandardDetails of Canada. It has been published as a National Standard of Canada by CSA Group. This Standard has been approved by the American National StandardDetails Institute (ANSI) as an American National Standard. Scope 1.1 Inclusions This Standard applies to battery management systems (BMSs) that are composed of hardware and software that monitor, control, optimize, and regulate electrical and thermal parameters such that the battery pack safely operates under specific conditions. A BMS may be equipped with other functionalities including taking actions to avoid hazardous consequences, battery power isolation, and external communication capabilities. This Standard applies to BMSs used with batteries that are installed in accordance with CSA C22.1, Canadian Electrical Code, Part I, in Canada or NFPA 70 in the U.S. in stationary applications (e.g., energy storage systems, uninterruptible power systems, auxiliary power systems) and in power mobility applications (e.g., electric vehicles, light electric rail). 1.2 Exclusions This Standard does not apply to BMSs used with batteries in portable applications for which the end product StandardDetails contain requirements for BMSs, such as appliances, machinery, power tools, and consumer electronics. BMSs used in such applications are covered by the applicable end product standard. 1.3 Terminology In this Standard, “shall” is used to express a requirement, i.e., a provision that the user is obliged to satisfy in order to comply with the Standard; “should” is used to express a recommendation or that which is advised but not required; and “may” is used to express an option or that which is permissible within the limits of the Standard. Notes accompanying clauses do not include requirements or alternative requirements; the purpose of a note accompanying a clause is to separate from the text explanatory or informative material. Notes to tables and figures are considered part of the table or figure and may be written as requirements.