QUICC 7S-10S Relay Smart BMS User Guide

QUICC 7S-10S Relay Smart BMS

Catalog

The following sections provide information on the operating environment, Bluetooth connection, view battery status, basic protection information, display battery voltage, adjustable parameters, and smart BMS user instructions.

APP operating environment

The product requires an operating system of Android version 4.3 or higher and iOS version 9.0 or higher. t also supports Bluetooth 4.0 – 5.0 devices and can work after obtaining Bluetooth and GPS usage permissions.

Bluetooth connection

Scan the surrounding Bluetooth 4.0 devices and click to connect the device in the connection interface. The APP will identify the supported devices and enter the dashboard interface. If not, it will be disconnected immediately. If a password is required to connect to Bluetooth, please enter the password: 000000.

View battery status

1. Displays the current when driving
2. Displays the total battery voltage
3. Displays the battery voltage range of each cell

View basic protection informatio n

Provides basic protection information for Android phone version.

**Others information

**

Provides additional information on the product.

**Display battery voltage

**

Displays the voltage of each battery, enabling users to quickly understand the status of each battery.

**Adjustable parameters

**

The parameters obtained by the first Bluetooth connection to the APP are the default parameters. When using the app for the first time, change nominal capacity to actual capacity, cycle capacity is actual capacity * 0.8.

**Smart BMS user instructions

**

The following instructions provide information on cycle times calculation, protection times metering, and capacity calculation.

About cycle times calculation

1. When the accumulated discharge capacity has exceeded the cycle capacity you have set, the cycle times will be increased at one time. It does not affect the cycle time calculation when the user charges the battery in the middle process.
2. When reconnecting the BMS, it does not affect the cycle times metering, and the accumulated discharge capacity will start to calculate from 0 with such action.
3. When writing in new parameters or making any calibration and any setting changes with the BMS, it can affect the calculation of the cycle times. After the above operation, the accumulated discharge current will be metered from 0 again.
4. If you’re outputting or charging below about 55W, the Xiaoxiang app may display 0.

Protection times metering

1. When protection occurs with the BMS, protection times will be increased by 1.
   For example if over-voltage protection with single cell’s happened, the protection time with single-cell protection will be increased by 1.

2. Reconnecting the BMS will not affect the protection times metering.

3. When making changes with new parameters and any other operation with BMS setting, the protection time will be cleared to 0.
   Therefore, please do not try to change the parameter setting when the BMS works stably after installation.

About capacity calculation

1. Average voltage has reached fully charge voltage you have set with single cell. The charge current dropped to 500mA below.
2. Over-charge protection with whole battery pack or with single cell occurred.
3. Discharge completely: Average voltage has reached the single cell over-discharge protection cut-off voltage. After the above process, recharge the battery again. Those processes will be taken as a complete aging cycle.
4. Capacity calculation : After BMS installation, BMS will evaluate the remaining capacity according to the parameter setting and battery average voltage. It depends on the average voltage of the battery, which ranges it will be in. In the late charge and discharge process, remaining capacity increase or decrease will be metered in integral of Current*time, the capacity will jump to 100% or drop to 0 when the battery meets the fully charge and discharge conditions.

About balance setting
About the consistency of the battery system, if user does not have professional test instruments, we can make judgment based on below simply conditions.

1. when makes the battery package, each single cell voltage difference should be less than 0.03V.
2. After 10 times aging cycles. after fully charge of the battery voltage difference are less than 0.03v, it will indicate the battery capacity consistency is good.
3. With one month rest, voltage difference is less than 0.03V, it indicates the battery inner resistance consistency is good.
4. when there is no electricity with the battery, and big voltage difference will be normal, it has no relation with battery consistency.

Application of Balance function：

1. Charge battery: balance will start working when the voltage reached the value of balance start voltage also the voltage difference is bigger than the voltage difference you have set during charge process.
2. Static balance: when reaches balance condition during rest time. the balance will start work.
3. When the battery has good consistency, we recommend using charge balance function . as for the static balance it works more effectively when the battery voltage difference is big.
4. Do not set the voltage difference below of 0.02V, our default value of 0.03V will be good.
5. When the battery consistency is good, you can set the balance start voltage with a higher value.

About Bluetooth connection

1. Connection for Bluetooth will be failed when the signal with Bluetooth is weak
2. For the version of 1.3 or below, the Bluetooth light will flash slowly, and it will go to hibernation status 8 seconds later together with PCB board. the light will turn on when connecting, Bluetooth light will turn off when disconnecting it 8S later. When for version of 1.5 or above. Bluetooth will not turn on when make a disconnection and its light will light on while connecting.
3. It will be better to connect an antenna on the Bluetooth if it was placed inside of the battery box, suggesting user to place the Bluetooth at the outside of the battery to get a strong signal.
4. In the case of enabling to search the signal of Bluetooth in the application process, user can click the repair button on App to see if the signal can be searched after re-start of Bluetooth.
5. When meeting the problems frequently when making the connection of “cannot support the device”, this problem usually resulted from weak signal or Mobile Bluetooth operation. you can click this repair button to make the connection successfully
6. When the Bluetooth connection is successful, it will flash first and then the Bluetooth lamp will always light up.

Common problems

A. Not can search the signal of Bluetooth?
Please check wires connection is correct or not with your battery.

B. When meets the battery voltage is 0.1V and IC error message shows on the software interface.
This problem usually comes from the incorrect wire connection order, please take off these wires in a reverse order of wire connection order with our diagram, correct wires connection order should start from making B-connection at first, then connect these wires from B1, B2 …. B? B+ is the last to be connected. When there are some batteries with 0.9V voltage around, and the neighboring cell with high voltage obviously.
please check the wires connection is correct or not.

14S 100A parameters：

Discharge

| Continuous discharge current| 60| A|
Peak discharge current| 120±5| A|

Charge

| Charging voltage| 54.6| V|
Charging current| 50（MAX）| A|

Overcharge protection

| Overcharge detection| 4.25±0.03| V| adjustable
Overcharge protection delay| 1000| mS| adjustable
Overcharge release voltage| 4.15±0.03| V| adjustable

Balanced

| Balance detection voltage| ≥4.0V| V| adjustable
Balance release voltage| ＜4.0V| V| adjustable
Balance current| 50-60| mA|

Over discharge protection

| Over discharge detection volta| 2.7±0.1| V| adjustable
Overcharge protection delay| 1000| S| adjustable
Over discharge release| 2.9±0.1| V| adjustable

Over current protection

| Over current detection| 150| mV|
Over current detection delay| 5| mS|
Over current protection| 70±5| A|

Release method

| ****

Disconnect the load

| |

Short circuit protection

| Short circuit protection| Disconnect external load| |
Short circuit detection delay| 250| uS|
Release method| Disconnect the load| |
| | | |

Charging / discharging temp

| Over temperature| 75±5| ℃| adjustable
---|---|---|---|---
Release temperature| 65±5| ℃| adjustable
detection delay| 2| S| adjustable
Under temperature| -10| ℃| adjustable
Release temperature| 0| ℃| adjustable
detection delay| 2| S| adjustable
Internal resistance| Main circuit conduction| ≤10| mΩ|

Consumption

| Working current| ≤40| uA|
Sleep current| ≤30| uA|

Working temperature

| ****

Temperature range

| ****

-20/+80

| ****

℃

|

Product Usage Instructions

1. Ensure that your operating system is Android version 4.3 or higher or iOS version 9.0 or higher.
2. Scan surrounding Bluetooth 4.0 devices and connect to the device by clicking on it in the connection interface.
3. Enter the password 000000 if required.
4. View battery status, including current when driving, total battery voltage, and battery voltage range of each cell.
5. View basic protection information for the Android phone version.
6. Display the battery voltage of each battery to understand the status of each battery.
7. Adjust the parameters according to your needs by using the app for the first time and changing the nominal capacity to actual capacity. Cycle capacity is actual capacity 0.8.
8. Ensure that you do not change parameter settings when the BMS works stably after installation.
9. To calculate cycle times, refer to the instructions provided above.
10. To calculate protection times, refer to the instructions provided above.
11. To calculate capacity, refer to the instructions provided above.

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