Home->BMS with Communications

Battery Management Systm (BMS) with Communication protocol for 3~16 cells in series Li-ion/Li-Polymer/LiFePO4 Battery Packs

Part number: HS-006

Features and Benefits

General Descriptions

Battery Pack Configurations

3S – 16S

Battery Pack Voltage

6V – 69.6V

Battery Pack Capacity

No Limit

Continuous Discharge Current

Max. 40A

Discharge Peak Current

60A For 10 Seconds

Over Discharge Current Protection

Programmable

Charge Current

Max. 40A

Over Charge Current Protection

Programmable

Temp. Sensors

3S-6S with 3 Sensors,

7S-10S with 4 Sensors,

11S-16S with 5 Sensors

E-Switch/Ignition Switch

YES

Balancing Voltage

Programmable

Balancing Current

30mA

Isolated Communication Protocols

CAN/RS232/RS485/UART

Working Temp.

-20°C ~ 80°C

Dimension

160 x 55 x 15mm

Weight

145g

System Block Diagram

Please be noted the fuse is not coming with BMS, we suggest customer to have the fuse on the P+ cable, it is the last protection if after failures occurs on all BMS’s over-current-protections. Suggested to go with the fuse which is slightly greater than overcurrent protection current.

Programming Parameters Settings

Almost all parameters can be logically programmed according to your cells’ specs on BesTech Software (Supports Windows System only), please be noted the programming setting function is not open for everyone, the software normally is set as display for parameters only, BesTech Power only gives the access for programming to customers who really understand BMS/Battery well.

With watchdog embedded in BesTech Software, the system is more robust, Battery Pack parameters are real-time displaying on our PC software/Bluetooth APP, the data detection frequency is every 400mS. Any alarm/fault conditions are saved to our EEPROM (Please be noted the special conditions records will be lost if BMS is reset or lost power).

To run BesTech Software, BesTech Programming Tool is needed (need purchase separately), the tool drive can be download from here.

Our programming tool is as below.

BesTech Software PC Utility (Windows only) downloading address is here. Your windows system probably need another firmware to run

smoothly, please download from here.

Here is the screenshot for BesTech Software PC utility.

 

Pre-configuration Before Use

BesTech BMS is preconfigured with your battery profiles which should be provided before ordering.

The basic battery profiles needed for pre-configuration as below.

• Li-ion / LiFePO4                          • Configuration / Voltage

• Battery Cell LVC and HVC          • Battery Pack Capacity

• Continuous discharge current     • Charge current

• Battery cell temp. ranges            • Over Current                     • Communication protocol and address (baud rate)

Any additional functions needed such as LCD/LED SOC display, buzz alarm, reset switch and so on, please contact us for functions customization, those are easy to implement from our firmware.

Thanks to our high advanced algorithms estimation, once the basic battery profiles are set initially, at least 2 completely cycles running, our BMS automatically starts to learn the parameters, voltage, current and temperature thresholds…, all parameters will be automatically calibrated and assigned. Those parameters can be adjusted according to the user’s needs afterward, but must remain within the Battery cell’s Manufacturer’s official specifications range.

* Once again the software utility normally is set as display for all parameters only, BesTech Power only gives the access for programming to customers who really understands BMS/Battery well.

 

Specifications

Taking LIFEPO4 Battery PACK BMS Parameters setting as example as below

No.

Indicator items

Factory default parameters

Yes/No

Notes

1

 

 

Single-cell over charge protection

Single-cell over charge alarm voltage

3550mV

Yes

 

Single-cell over charge protection voltage

3650mV

Yes

 

Single-cell over charge protection delay

1.0S

Yes

 

 

Single-cell over charge protection release

Single-cell over charge protection voltage release

3550mV

Yes

 

Capacity release

SOC<90%

Yes

 

Discharge release

Discharge current >200mA

No

 

Single-cell over charge protection release delay

3S

Yes

 

2

 

 

Single-cell over discharge protection

Single-cell over discharge alarm voltage

2700mV

Yes

 

Single-cell over discharge protection voltage

2500mV

Yes

 

Single-cell over discharge protection delay

1.0S

Yes

 

 

Single-cell over discharge protection release

Single-cell over discharge protection voltage release

2600mV

Yes

 

Release while charging

Charge current>200mA

No

 

Single-cell over discharge protection release delay

3S

Yes

 

3

Charge over current protection

Charge over current alarm current

Customer customization

Yes

 

 

After appearing 3 times in a row, the locked state will no longer be automatically released, and the system needs to be restarted

Charge over current protection current

Customer customization

Yes

Charge over current hardware protection overcurrent

Set according to actual current

Yes

Charge over current software protection delay

1S

Yes

Charge over current hardware protection delay

10mS

Yes

Charge over current protection release

Automatically  release

Automatically release after 30s

Yes

Discharge release

Discharge current >200mA

No

4

Discharge over current protection

Discharge over current alarm current

Customer customization

Yes

 

 

After appearing 3 times in a row, the locked state will no longer be automatically released, and the system needs to be restarted

Discharge over current protection current

Customer customization

Yes

Discharge over current hardware protection overcurrent

Set according to actual current

Yes

1st discharge over current protection delay

2S

Yes

2nd discharge over current protection delay

1S

Yes

Discharge over current hardware protection delay

10mS

Duration to be confirmed

Yes

Discharge over current protection release

Automatically  release

Automatically release after 30s

Yes

Charge release

Charge current >200mA

No

 

 

 

 

5

 

 

Short circuit protection

Short circuit protection current

Set according to actual current

Yes

 

After appearing 3 times in a row, the locked state will no longer be automatically released, and the system needs to be restarted

Short circuit protection delay

Hardware determination

No

Short circuit protection release

Released after 30s

Yes

System restar

MOS over  temperature protection

Over temperature protection temperature

100

Yes

Over temperature release temperature

80

Yes

 

 

 

 

 

6

 

 

 

 

 

 

Battery cell temp. protection

Charge under temperature alarm temperature

3

Yes

 

Charge under temperature protection temperature

0

Yes

 

Charge under temperature protection release temperature

3

Yes

 

Charge over temperature alarm signal

50

Y

 

Charge over temperature protection temperature

55

Yes

 

Charge over temperature protection release temperature

50

Yes

 

Discharge under temperature alarm temperature

-10

Yes

 

Discharge under  temperature protection temperature

-20

Yes

 

Discharge under  temperature protection release temperature

-10

Yes

 

Discharge over temperature alarm signal

50

Yes

 

Discharge over temperature protection temperature

60

Yes

 

Discharge over temperature protection release temperature

55

Yes

 

7

Current consumption

Active mode current consumption

TBD

No

Determined by hardware

Standby mode current consumption

TBD

No

Determined by hardware

 

8

Balancing function

Balancing starting voltage

3400mV

Yes

 

Open Voltage difference

100mV

Yes

 

Close Voltage difference

50mV

Yes

 

9

Default capacity setting

Low voltage warning threshold

SOC<10%

Yes

No alarm when charging

Full capacity setting

AH

Yes

 

Connection Diagram

BMS Unit Connections

• Balancing Port – battery pack balancing sensing wires, 1st wire can be used as reset

• External Temp. Sensors Port – 8 Pins connector for 4 x external sensors

• GPIO Port – 20 Pins for communication protocols and e-switch/ignition key, external systems such as SOC LED/LCD display, alarm buzzer…

Communication Protocols

BMS supports different communication protocols, HS006 integrated with 1x RS485, 1x RS232, 1x CANBus, 1x UART, all communications are isolated except for UART, the default baud rate used in current communication implementation is set as 19200KBPS, contact BesTech support for different baud rate setup, such as 9600K or others.

P.S. RS485, RS232, CAN communications can be used simultaneously.

Please download our communication address ID manual as below:

RS485

RS232

CANBus

BMS communicates with windows PC utility thru UART/RS485/RS232/CAN protocol, customer need purchase BesTech programming tool separately to do the programming and reading for all parameters.

 

BesTech BMS is modularized an optional low energy Bluetooth function, with Bluetooth, all parameters are accessible on our Smartphone application which is a simplified version of the PC Utility. The mobile app is a very useful feature for monitoring the battery’s status and configuring all BMS parameters remotely. Since the system may not always be easily accessible, the app is ideal for quick system status reviews and troubleshooting in case of errors. Customers can download our FREE APP “BesTech BMS” from Apple Store or Google Play.

Mechanical Dimensions(layout)

 

 

Copyright © 2011 BesTech Power Co., Ltd.
Tel:+86 - 769 82033052     Fax:+86 - 769 82033050 # 620   E-mail:info@BesTechPower.com
Address 1: 3F, Bldg3, Fulian Industrial Park, Heping Industrial area, Jianhui Rd, Longhua, ShenZhen, China.
Address 2: 4F, Bldg B, RuiXin HengYe Industrial Park, TaiXing Rd # 18A, ShiGu District, TangXia Town, DongGuan, China