Disconnect Switches for Lithium Ion Battery Packs

Подписаться 14 тыс.

Просмотров 17 тыс.

50% 1

Every battery pack consists of a group of cells, a battery management system (BMS) and a disconnect switch. What is the purpose of the disconnect switch? How do they work, and what types of disconnect switches are best for a given pack? Where do these go in the system? Understanding these fundamental disconnect methods are critical for battery pack safety.
In this video, Erik Stafl, President of Stafl Systems, reviews this key part of the battery pack design. When a BMS detects an unsafe state it will open a switch to prevent current flow into the pack.
There are two primary disconnect switch types:
Electromechanical
- Relay (contactor)
Solid state
- NMOSFETs
The different switch types and architectures are described in detail, with a focus on designing safe systems. At the end, Erik discusses the manual service disconnect switch, which is used when servicing a battery pack.
We recommend reviewing our previous videos on Battery Management Systems and Battery Pack Architecture prior to viewing this video if you are unfamiliar with Battery Management Systems.
#disconnectswitch #lowsideswitch #battery #batterypack #batterymanagementsystem #lithiumionbattery #bms

Опубликовано:

27 сен 2024

Ссылка:

Скачать:

Готовим ссылку...

Добавить в:

Мой плейлист

Посмотреть позже

Комментарии : 15

@youtubechannnel4049 Год назад

This is a great video series. Your method of presentation and the clear and concise way that you speak makes the subject matter easy to comprehend. Thank you!

@christopherleubner6633 4 месяца назад

6:00 Optoisolators are your friend for this application. Usually use a combination of 3 types of switches for HV Li battery arrays, a single use fuse for safety, a Mosfet for soft disconnect, and a heavy duty relay for enable and disable main power to subsystems. ❤

@Tanajipatil68 Год назад

Why the continuity is not there in these lecture series..we found it more useful..plz provide such content..

@puneethmv1450 Год назад

Also a Pyro fuse can be used for to disconnect the system much faster than relay for 800V BMS

@christopherleubner6633 4 месяца назад

Yup those are good for large HV solar arrays 600A at 1200VDC is mighty hard to interrupt reliably with normal breakers as well.

@kihelsifeddine7802 Год назад

Thank you so much.

@paulwyleciol3459 Год назад

Thank you, interesting!

@cantor0305 10 месяцев назад

thank you

@iruz21 Год назад

Thanks a lot for your video, that's simplied and easy to understand. I am fairuz from indonesian, we have a rnd team. It focus on bms development for light electric vehicle. We have some issues about bms architecture with p channel mosfet. Do you have some reference or suggest about that issues? Thanks!

@ashujoshi1632 Год назад

thanku

@saadialahmer2706 Год назад

Your methode of teaching is so effective ,thank u

@michaelfeng772 Год назад

Thank you for sharing

@AndyWong-t4w 10 месяцев назад

great video! In a low voltage system, cutting of the pack while discharging isn't too much of a problem due to low voltage low current. Do you have experience of power cut off with contactor with high voltage systems? (400V-800V) Will you have arching issues or di/dt spikes that may potentially break the contactor? Thanks!

@Arunyadav-pr9hp Год назад

Thanks a lot for the video. Can we connect modules in combination of series-parallel to get same power rating?

@georgedsuarez Год назад

Not really. You don't want to expose your cells to too much current on charge or discharge. the configuration of the cells series and parallel depends on the amount of current you expect to push into or pull out of the battery.