The S2 BMS controller is designed for low to medium voltage lithium-ion battery systems and supports 2 separate cell banks. Each cell bank can have 4-12 cells in series, for a total of 8-24 cells. Originally developed for use in electric vehicles, the S2 controller’s standalone design is highly configurable for many different applications.

The JTT S-Series Battery Management System (BMS) controllers are stand-alone Low Voltage Battery Control Systems. This all in one, single BMS controller can monitor battery packs up to 48 cells and 200V. The S-Series controllers come in 4 different models: S1, S2, S3, and S4. The S1 can monitor 12 cells, S2

The stand-alone S-Series BMS controllers are typically used with low to medium voltage battery packs for mobile applications, small passenger vehicles, industrial applications, and backup power. An optional upgrade for ground fault detection is available.

Significantly smaller enclosure size for 24-72 cell configurations. Roughly 40% lower weight on all models due to the new enclosure design and streamlined (removable) heatsink. Minimum heat dissipation requirements apply. Considerable boosts in measurement accuracy and processor speed allow for more advanced calculations and logic.

s2位于汽车内部控制器上，用于确认车辆是否充电准备就绪；当车辆满足充电条件时，bms将s2闭合； R1\R2\R3\R4\RC用于控制导引电路，它们的阻值有明确定义，不能任意选取；

闭合s2，实时检测充电桩最大供电能力（cp---pwm）； 闭合k1，k2，进行充电。实时监测。 取充电设备最大额定电流、车载充电机最大额定电流及电缆容量的最小值作为此时车载充电机的最大允许输入电流

2024年4月10日 · bms分别指令s1、s2 闭合，分别测得电压u1、u2，以及高压总电压u总，将这三者代入公式计算，计算出高压+与搭铁的绝缘电阻、高压-与搭铁的绝缘电阻，然后判断绝缘性能是否正常。

单片机2就通过断开s2来通知交流桩停止工作。 如果充电桩端出现故障，充电桩会将S1处的开关置到+12V，CP信号PWM波中断，车辆会在3s内停止充电。 如果觉得合适，欢迎点赞、收藏、转发

2024年1月27日 · 本文详细介绍了电动车充电系统中接口的定义，硬件连接原理，特别是OBC（On-BoardCharger）的工作机制，涉及单片机、DSP在不同功能模块的分工，如交流桩的控制、BMS对PDU的管理以及预充、慢充接触器的控制。

2019年3月19日 · BMS在待机模式下检测放电WAKEUP信号后，接收车辆控制器（Vehicle Control Unit，VCU）发来的动力电池运行状态指令和接触器的动作指令，并执行相关指令，完成BMS上电及预充电流程，进入放电模式。