BMS and PCM Design

Melasta offers complete integrated solution for the battery include cell selection, BMS selection, integrated software solution and communication protocol integration with the required application. Melasta’s in-house research and development team is focused on designing the BMS according to customer requirements. These are the main features of our designed BMS

1. Support RS485, CAN BUS, URAT, i2c and other communication protocol

2. Up to 100a continuous discharge current

3. Support MOS high temperature protection function

4. Over voltage, over current, over temperature control function.

5. Over-current, under voltage, and low-temperature protection.

6. Self-Heating Technology for Low Temperature.

Battery Management System which is shortly known as BMS is an electronics circuit which is used to control the safe operation of the battery. It protects the battery pack from being over-charged (cell voltages going too high) or over-discharged (cell voltages going too low) thereby extending the life of the battery pack. Melasta offer the designing service for customized BMS. These are the main features of customized BMS design. 

Main Features of Customized BMS

Communication Functions

1. Communication ProtocolRS485, CAN BUS, URAT, I2C
2. Communication Protection

3. SOC Indicator

4. Current Detection

5. Abnormal Log

6. Self-Inspection

7. Using Time Record

Charge Management

1. Charging Over-Voltage Protection
2. Charging Over-Current Protection

3. Charging Over-Temperature Alarm/Protection

4. Charging Low-Temperature Alarm/Protection

5. Abnormal Voltage Gap Warning

6. Charging Short Circuit Alarm/Protection

7. Self-Balancing

Discharge Management

1. Discharging Over-Current Protection
2. Discharging Under-Voltage Protection

3. Battery No-Load Protection

4. Discharging Short Circuit Alarm/Protection

5. Discharging Over-Temperature Alarm/Protection

6. Discharge Low-Temperature Alarm/Protection

Special Functions

1. Self-Heating Technology for Low Temperature
2. Ultra-Low Power Consumption

3. Reverse Connection Protection

4.Self-Discharging in Fully Charged Storage

 

Few Models without Communication Protocol

Serial Number

Standard Model

Scheme Type

Support The Number Of Series

Support Battery Capacity Range (mAh)

Continuous Current Range (A)

MOS Package And Quantity

Charging Overcurrent (A)

Balance Current (ma)

MOS Topology

Temperature Protection

Discharge Switch Function

Size(mm)

1

MB-B1401

BP308

7~14

3000~20000

-20~+20

3-TO252

YES

-

Same mouthhalf split mouth

Optional

Optional

63*32*8

2

MB-B1402

BP308

7~14

3000~20000

-20~+20

3-TO252

YES

-

Completely split

Optional

Optional

63*32*8

3

MB-B1403

BP308

7~14

3000~20000

-25~+25

3-TO220

YES

Optional, Max50mA

Same mouthhalf split mouth

Optional

Optional

71*56*12

4

MB-B1404

BP308

7~14

3000~20000

-25~+8

13-TO220

YES

Optional, Max50mA

Completely split

Optional

Optional

63*32*8

5

MB-P1405

BP308

7~14

3000~20000

-25~+8

13-TO220

YES

Optional, Max50mA

Half split Complete split

Optional

Optional

109*35*8

6

MB-B1406

BP308

7~14

3000~20000

-25~+8

13-TO252

YES

Optional, Max50mA

Fully split (charge off discharge tube)

Optional

Optional

63*35*8

7

MB-B1407

BP308

7~14

3000~50000

-50~+50

6-TO220

YES

Optional, Max50mA

Same mouthhalf split mouth

Optional

Optional

90*65*15

8

MB-B1408

BP308

7~14

3000~20000

-25~+8

13-TO252

YES

Optional, Max50mA

Half mouth

Optional

Optional

50*40*8

Few Models with Communication Protocol

Serial No

Product number

Scheme type

Support section (Cell)

Support battery capacity range (mAH)

Application field

Commu-

nication

Upper software support

MOS package and quantity

Continuous current range (A)

Balance current (mA)

Temperature protection

Accurate electricity metering

Size(mm)

1

MB-GP04S007

BQ76920+STM32

4

5000~120000

Energy storage

RS485

Yes

9-TO263-7

-100~+100

-

Yes

YES

170*60*15

2

MB-GP06S003

RAJ240080

4~6

5000~12000

Ebike, PowerTools, UPS

SMBUS

Yes

2-TO252

-12~+12

0~60

Yes

YES

88*56.5*8

3

MB-GP07S007

930+328

6~7

3000~10000

robot

UART

Yes

12-TO220

-20~+2

0~60

Yes

YES

111*69*8

4

MB-GP10S026

940+328

10

3000~10000

Ebike

UART

Yes

2-TO220

-20~+20

0~60

Yes

YES

303.5*54*10

5

MB-GP10S034

940+STM32

10

10000~40000

Ebike

CAN

Yes

2-TO220

-15~+15

0~60

Yes

YES

100*55*15

6

MB-UP03S001

RAJ240080

3S

3000~100000

ups

UART

YES

10-TO220

-100~+100

YES

YES

167*67*15

7

MB-UP43

940+STM32F103C8

6~16

10000~40000

Electric motorcycle, AGV

CAN

Yes

6-TO220

-45~+45

0~60

Yes

YES

140.5*134.5*12

8

MB-UP45

940+STM32F103C8

6~16

10000~40000

Electric motorcycle, AGV

485/CAN

Yes

6-TO220

-45~+45

0~60

Yes

YES

316.5*64*12

9

MB-UP49

940+STM32F103C8

6~15

10000~40000

Electric motorcycle, AGV

CAN

Yes

15-TO220

-40~+8

0~60

Yes

YES

100*70*12

10

MB-UP50

940+STM32F103C8

6~14

10000~40000

Electric motorcycle, AGV

NFC

Yes

8-TO220

-50~+50

0~60

Yes

YES

160*90*12

11

MB-UP51

940+STM32F103C8

6~15

10000~40000

Electric motorcycle, AGV

485/CAN

Yes

CC-TO220

-80~+80

0~60

Yes

YES

140.5*134.5*12

12

MB-UP53

940+STM32F103C8

6~15

10000~40000

Electric motorcycle, AGV

CAN

Yes

10-TO220

-150~+150

0~60

Yes

YES

177*90*15

13

MB-UP54

940+STM32F103C8

6~15

10000~40000

Electric motorcycle, AGV

CAN

Yes

4-TO220

-32~+32

0~60

Yes

YES

135*128.5*10

Technical Parameters

This standard describes the size, characteristics, technical requirements and matters of PCM for 6~16 series. These parameters are for a customized project.

PCM Test Environment

Temperature 1535℃

Relative humidity 4575% RH

Atmospheric pressure 86106 KPa

Measure Instrument Request

Voltage meter request:The accuracy of the measuring instrument is not less than 0.5. The resistance is not less than 10KW/V

Current meter request:  The accuracy of the measuring instrument is not less than 0.5

Time meter request:  The accuracy of the measuring instrument is not less than 0.1%

Temperature meter request:  The accuracy of the measuring instrument is not less than 0.5℃

No.

Item

Min.

Typical Value

Max

Unit

Note

1

Number Of Series

6

~

16

series

Software adjustments

2

Charging Current

150

 

A

Continuous

3

Discharging Current

150

 

A

Continuous

4

Monomer Overvoltage

4200

4250

4300

mV

The first level (adjustable parameters)

 

Reaction Time

1

2

3

S

Recovery

4050

­4100

4150

mV

Monomer Overvoltage2

_

4450

4600

mV

The second level (adjustable parameters)

 

Reaction Time

 

1000

1250

mS

Recovery

Software delete

5

Monomer Under Voltage

2750

2800

2850

mV

The first level (adjustable parameters)

 

Reaction Time

1

2

3

S

Recovery

3350

3400

3450

mV

Cell Voltage

2000

2000

2100

mV

The second level (adjustable parameters)

 

Reaction Time

100

1000

mS

Recovery

Software delete

6

Short Circuit Protection

When positive and negative resistance is less than 50mΩ, It is short-circuit

 

Recovery

remove load 6-10S

7

Over Charging Current Protection

150

160

170

A

Adjustable parameters

Reaction Time

3

4

S

Recovery

Automatic recovery after 8S

8

Over Discharging Current Protection 1

150

160

170

A

The first level (Adjust parameters)

Reaction Time

5

S

Recovery

Recovery: Automatic recovery after 4S

Over Discharging Current Protection

180

200

220

A

(The second level (Adjustable parameters)

Reaction Time

500

——

1000

mS

Recovery

software delete

9

Charging Over-Temperature Protection

53

55

80

Adjustable parameters

Recovery Temperature

37

40

43

10

Discharging Over-Temperature Protection

57

60

63

Adjustable parameters

Recovery Temperature

37

40

43

11

Battery Balance

-

41

82mA

mA

Adopting differential pressure method

12

Storage Temperature And Humidity Range

-20 to 35,(45-85%RH) within one year

60%70%During storage, battery should charge every three weeks, charge capacity is 60%70%

-20 to 40,(45-85%RH) within 6 months

Within 3 months:-20 to 45,(45-85%RH)

Within one week:20 to 50,(45-85%RH)

13

Quiescently Current Consumption

——

——

30

mA

PCM current consumption

Sleep Current

 

0.15

1

mA

 

14

Weight

 

120

 

g

No wires

15

Working Environment Temperature

-40

25

85

Humidity: max: 85%rh

16

Communication Port

CANBusRS485

SMbus

Communication format, as the content of communications