Electric Vehicle Batteries(5)

 

Electric Vehicle Batteries(5)

 

Battery Management System (BMS)

It’s time to get to the massive stuff, we discussed it briefly in our previous article. Battery management system or BMS is taken into consideration to be the brain of a battery p.C.. It is a circuit combined with an procedure that monitors the voltage, current and temperature of the cells in a battery percent and ensures overall performance and protection of the person cells in a battery percent. It is also chargeable for balance charging, SOC and SOH measurement of the cells and much other vital capability.  Let us look into what they do.  futuretechexpert

“How to locate the amount of rate left in battery?”

State of Charge (SOC)

State of Custody or SOC is one of the maximum vital parameter to be unhurried in a battery. As we saw earlier  values from Ah of the battery can't be used to determine how a great deal potential is virtually left in a battery. Only if we calculate this SOC we will tell the person how plenty price is left inside the battery. SOC tells us how lots percent of charge is left in a battery. Imagine how hard it is to your telephone while it has no information approximately battery percent.

Measuring the potential of a battery isn't as easy as measuring the voltage across its terminals as many humans thing there are many factors which have an effect on the capability of a battery including rate cycles, Temperature, discharge quotes etc. There are many approaches in which this can be completed, generally used one is Columb counting method. We will talk how that achieved in a separate article.

SOC = Total fee Input / Maximum Capacity

Depth of Discharge (DOD)

Depth of Discharge (DOD) is the alternative of SOC. While SOC tells us how a whole lot percent of rate is closing, the DOD tells us how an awful lot percent of charge is consumed in the battery.

State of Health (SOH)

The capacity of a battery lower as it a while; this will lessen the variety the EV ought to cover. Only if we maintain song of the ageing we can understand while to change the battery. The price at which an EV a long time additionally depends on the operating temperature the C-charge underneath which the battery is operated, price cycles and many others. State of fitness measures the health of the battery in percent by considering its growing older factor. The similarly it ages the decrease will be health of the battery.

Cell balancing

Cell balancing is any other essential mission performed by way of the BMS, as we recognise more than one cells might be combined in collection or parallel to form a battery %. The cell voltage of all of the cells must usually be same, as an example in a % of 4 18650 cells connected in series the voltage across all of the cells should be identical else cell with decrease voltage might be over discharged and the cell with higher voltage could be over charged. To save you this BMS plays something called Cell balancing, it detects the cells with higher voltages and discharges them till the capacity fits with its neighbors.

Cell Safety

Apart from this the BMS also guarantees environmental and electrical protection of the mobile. It monitors the fever of the cells and controls the cooling system gift inside the BMS. The Tesla model S has a runny cooling system (Glycol) within the Battery Pack which is managed with the aid of the BMS. The coolant not handiest cools the battery however additionally heats it as much as nominal temperature if required during the winters.

With this we have reached the cease of the thing but defiantly not the cease with what can be learned about EV batteries. So in case you wanna be an expert that is where you just get started.  There is so much greater to examine like battery Modeling, BMS layout Battery Testing protocols etc. However allow’s have these types of for a distinctive article.  I agree with this facts became beneficial and has sparked the hobby in you to recognise greater approximately EV batteries and how it works. Let me realize your mind inside the remark section and permit’s meet in some other thrilling article on Electric automobile.

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