China BMS Battery BMS 48V BMS

Daly 3.6V 3.7V 13s 48V E-Bike Li Ion Battery 18650 BMS 15A 20A 35A 45A 60A Battery BMS Charging Voltage 54.6V with Balance

Model:DL13S(3.7V ratedLi-IonBattery not for3.2V Rated LiFePO4)

common Version : common port for charge/discharge
separate Version : separate port for charge/discharge

We can customize any PCB from 1S to 30S lithium batteries with different current.

1. Overview

DL13S48V18A/25A/35A/45A/60Abms is used for 13 series48V battery pack.

We can design it for various lithium batteries like LiFepo4, LiMn2O4, and Li-polymer etc.

The main functions are: over charge protection, over discharge protection, over current protection, short-circuit protection, temperature protection etc.

According to the customer request we can develop PCM in different sizes and structures.

BMS manufactured by high quality Mos and IC imported . Keep your battery long cycle serivce life time.

2. Advantage

Use top quality (A-level) protective integrated circuit IC, from the solution of Seiko ofJapan.

Strong load ability, constant discharge current18A/25A/35A/45A/60A,use high voltage resistance, low inner

resistance power Mosfet. The heat sink will greatly help cooling.

IC itself has power balancing function. The circuit is simple and reliable.

Typical voltage detection for each cell. So each battery will be prevented over charged orTimer & Counter over discharged. Over current and short circuit protection

function is very reliable.Long time short circuit of the load won't affect the PCB and the battery.Temperature protection during charging and discharging.

Extreme low power consumption. The consumption of the whole device is less than 50uA.

PCB use high anti-corrosion, high water resistance, high impedance ESD conformal Coating.

13S48VDetailSpecDischargeSocket & Outlet MaximalContinuousDischargingCurrent18A25A35A45A60APeakDischargingCurrent50A60A100A180A180AOverCurrentProtectionCurrent50A60A100A180A180AChargeChargingVoltage54.6VChargingCurrent18A25A35A45A60AOverchargeprotectionOverChargeDetectionVoltage4.25±0.025VOverChargeDetectionDelayTime0.5SOverChargerReleaseVoltage4.19±0.05VCellbalancingCellbalancingDetectionVoltage4.18VCellbalancingReleaseVoltage4.18VCellbalancingCurrent35±5mAOverdischargeprotectionOverDischargeDetectionVoltage2.8±0.05VOverDischargeDetectionDelayTime0.5SOverDischargerReleaseVoltage3.0±0.05VOvercurrentprotectionOverCurrentDetectionVoltage150mVOverCurrentDetectionDelayTime9MSOverCurrentProtectionConditionDisconnecttheloadShortProtectionDetectionConditionExteriorShortCurcuitDetectionDelayTime250uSReleaseConditionDisconnecttheloadTemperatureProtection65ºCor75ºCoptionalInternalResistanceMOSPET≤10mΩ

FQA
1.What is the common port and separate port? what is the difference?
We take 13S48V16A BMS as an example, common port 16A means your chargecathode and discharge cathode are connected in the same point end(our P-),charge cathode and discharge cathode are used in the common connection
port, so the charge current and discharge current are the same 16A. while theseparate port is separately connected by charge cathode (C-) and dischargecathode (P-), so the charge current and discharge current are different,discharge current 16A, charge current 8A.2.What is the balance function?
The working principle and function are as followings, when your one cell voltageis upto alarm voltage(Li-ion upto 4.18V, Life Po4 upto (3.6V), then the cell Balancestarts to work, balance resistance starts discharge with 35mIndustrial Equipment & Components a(when balancedischarge starts to work, BMS will starts a little heat up, which is the normaPower Tools lreflection), the cell is in both charging and discharging status, and others whichare not reached to alarm voltage(Li-ion 4.18V, Life Po43.6V)are only in chargingstatus, no discharging, when the fast cell voltage is reached to alarm voltage(Li-ion 4.25V, Life Po43.75V)BMS starts off power protection, all the other cells
are all in stop of charging, this process will enable your battery charging inbalance current, and your battery voltage are in balance status, but when yourcell voltage difference are in a big range, then balance can not be functionning.
well3.The relationship between Battery capacity and BMS current?
There is no direct relationship between Battery capacity and BMS current, bigcapacity doesn`t mean a big battery, but rely on continue current, that is to sayif your engine is powerful, your should choose high current of BMS, it is not reliedon batterycapacity.4. What type of charger should I choose?
Lithium battery must choose specific charger, do not useCharger for Leadacid battery, for leadacid charger may have MOS with highpressure breakdown protection, which will not protect of BMS over charge.Life Po4 battery charger voltage=battery string No.X3.6V, while Li-ion batterycharger voltage=Battery string No.X4.2V.5. What current BMS should I choose ?
Take 10S36V as an example: what current BMS you choose is relied on yourE-bicycle Motor power and current limitation of controller. eg., choose 16A forbelow 350W, 25A for below500W, 35A for below 800W, 60A for Below 1000W,higher than 1200W are contact with our service specialist for suggestions, oneinall, continue current shall be higher than current limitation in Controller.6. Whethermy BMS damaged?
if you want to judge if the BMS is damaged, please take the folowing steps, totest if each cell volShaft tage is the same with voltmeter? if the cell voltage differenceis over 1.0V, the fault is displayed that it cannot run far, no power supply at the
start range, short charge time, all these issues are almost caused by battery cells,if BMS damaged is displyed as no charge, no discharge, no discharge while thebattery has voltage.