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[China]
Trade Verify
Address: 11F, Huakun Building, No.200 Section 2 Xiangfu East Road, Dongjing Street, Yuhua District, Changsha, China.
Contact name:Jimmy
Hunan AUK New Energy Co., Ltd. |
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Product Introduction
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
charge cathode 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 the separate port is separately
connected by charge cathode (C-) and discharge cathode (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 voltage is up to alarm voltage(Li-ion up to 4.18V, Life Po4 up
to (3.6V), then the cell Balance starts to work, balance resistance
starts discharge with 35ma(when balance discharge starts to work,
BMS will starts a little heat up, which is the normal reflection),
the cell is in both charging and discharging status, and others
which are not reached to alarm voltage(Li-ion 4.18V, Life Po4 3.6V)
are only in charging status, no discharging, when the fast cell
voltage is reached to alarm voltage(Li-ion 4.25V, Life Po4
3.75V)BMS starts off power protection, all the other cells are all
in stop of charging, this process will enable your battery charging
in balance current, and your battery voltage are in balance status,
but when your cell voltage difference are in a big range, then
balance can not be functioning well .
3.The relationship between Battery capacity and BMS current?
There is no direct relationship between Battery capacity and BMS
current, big capacity doesn’t mean a big battery, but rely on
continue current, that is to say if your engine is powerful, your
should choose high current of BMS, it is not relied on battery
capacity.
4. What type of charger should I choose?
Lithium battery must choose specific charger, do not use Charger
for Lead acid battery, for lead acid charger may have MOS with high
pressure breakdown protection, which will not protect of BMS over
charge.Life Po4 battery charger voltage=battery string No.X3.6V,
while Li-ion battery charger 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
your E-bicycle Motor power and current limitation of controller.
eg., choose 16A for below 350W, 25A for below500W, 35A for below
800W, 60A for Below 1000W, higher than 1200W are contact with our
service specialist for suggestions, one in all, continue current
shall be higher than current limitation in Controller.
6. Whether my BMS damaged?
if you want to judge if the BMS is damaged, please take the
following steps, to test if each cell voltage is the same with
voltmeter? if the cell voltage difference is 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 displayed as no charge, no
discharge, no discharge while the battery has voltage.
Attention When Connecting:
When we connect BMS with cells or disassemble BMS from battery
pack, the following order and regulations must be complied with to
avoid damage of components of BMS and problems of not protecting of
cells.
In order to achieve the best performance of BMS and to run the
longest distance, all the battery must be matched well (Each
battery voltage difference less than 0.05V, IR difference less than
15 mΩ, capacity differenace less than 30mAh) to make sure the
better consistency of the battery.
Cell must be connected in parallel first, after then connected in
series.
Connection:
1. Connect charging /discharging wire, battery pack negative wire.
2. After confirm the wires are connected OK, plug the connector
cable in the BMS
Do not plug connector cable in the BMS before connect wire.
Attention, ESD protection during work.
About Logistics:
DAP channel generally takes 5-9 working days, and DHL / UPS /
FedEx, etc. are selected; DDP (including tax payment) channels
generally take 12-15 working days. The freight forwarding line
arrives in your country and then transported by local express.
2. About products:
all our products cooperate with manufacturers, and these
manufacturers are very reliable. Products are popular, and most
products have CE certificates.
3. About delivery time:
Generally speaking, we have stock and can deliver goods quickly
(within 1-3 days). DIY products, such as battery box, bus bar,
insulating board, etc., are generally customized within 3-7 days;
4. What services can we provide?
Accepted delivery terms: FOB/DAP;
Accepted payment currencies: U.S. dollars, RMB;
Acceptedpayment types: T/T, L/C;
5. After sales service:
if you encounter problems in the process of using our products, or
consult about installation and other problems, please contact us.
Email: jimmy@aukpower.com
Wechat / Tel. / WhatsApp: + 86-15220259126
