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12V/20A 4S RS485 BMS
  • 12V/20A 4S RS485 BMS
  • 12V/20A 4S RS485 BMS
  • 12V/20A 4S RS485 BMS
12V/20A 4S RS485 BMS
【Brief】:

Model: ZBL-12V20ATC4-4S

Battery packed series: 4S

Maxinum output current: 20A

Communication Protocol: RS485/UART

【Series】:Standard Series
Introduction

This series BMS is mainly design for 12V with less than 20A operating current lithium battery group. In this scheme, a low power with high precision processor is used to match the high accurately sampling chip for dynamic intelligent management of battery pack. This series applied the unique SOC & SOH algorithm, which can elvaluate the higher accurate SOC for large capacity battery packed. At the same time, the intelligent dynamic equalization to ensure the lithium batteries work in a stable state and prolong the life of batteries.

 

Application Scope

12V (4S ) lithium battery packed

 

Features

1)Support RS485 & UART, for study the battery information and modified the firmware

2)Support 2 way temperature sensor for monitoring the battery group

3)Coulomb SOC algorithm and online self learning function, provide the SOC accurately

4)Intelligent dynamic balancing

5)Support expansion of USB converting box, bluetooth module and LCD display(option)

  

No

Item

Condition

Specification

1

 Input Voltage

Input Voltage B+ to B-

15.2V

2

 State of Charging(SOC)

Battery cell voltage accuracy

±30mV

Battery Packed voltage accuracy

±300mV

Current accuracy rate

±3%

SOC accuracy rate

±10%

3

 

 Overcharge(Single CELL)

Protection voltage

3800±30mV

Recovery voltage

3500±30mV

Protection delay time

1000±300mS

5

 

 Over discharge( Single CELL)

Protection voltage

25030mV

Recovery voltage

2800±30mV

Protection delay time

1000±300mS

7

 

Primary Over discharge current

Primary Over current

40A±3%A

Primary delay time

3S±300mS

8

Secondary Over discharge current

Secondary Over current

60A±3%A

Secondary delay time

1S±300mS

9

Over charge current

Over current

20A±3%A

Delay time

5S±300mS

10

Communication feedback delay time

Delay time before sleeping mode

≤100mS

Delay time under sleeping mode ( At least two command issued, the first is activated the communication and the second is data responese)

≤100mS

11

 

 Short circuit protection delay time

Short circuit protection delay time

200~600uS

Recovery Conditions

Shut down the loading and charging again

12

 

 Temperature protection

High Temperature Protection in Discharging   (±3℃)  (Cell temperature)

65

High Temperature Recovery in Discharging       (±3℃)  (Cell temperature)

55

Low Temperature Protection in Discharging   (±3℃)  (Cell temperature)

-10

Low Temperature Recovery in Discharging     (±3℃)  (Cell temperature)

-5

High Temperature Protection in Charging      (±3℃)  (Cell temperature)

60

High Temperature Recovery in Charging       (±3℃)   (Cell temperature)

50

Low Temperature Protection in Charging       (±3℃)  (Cell temperature)

0℃

Low Temperature Recovery in Charging         (±3℃)   (Cell temperature)

5℃

High Temperature Protection in Charging and Discharging     (±3℃)  (Mosfet temperature)

85

High Temperature Recovery in Charging and Discharging     (±3℃)  (Mosfet temperature)

75

Note: The basic protection parameter can be modified by PC software!     

 ( Please modified it under the guide of professional engineer! )

 

No

Item

Condition

Specification

13

Communication Interface

RS485

Support

14

Communication Interface

URAT

Support

15

Battery Temperature Monitoring Sensor

For monitoring the temperature of battery group

Support

16

Cell Voltage Balancing

Intelligent Passive consumption equilibrium

Support

17

Expansion function

1) Bluetooth module

2) PC software ( USB converting Box )

3) LCD Display

Support (Option)

18

Short Circuit Protection

Support the battery group within 30AH  (Relay protection for the capacity more than 30AH)

Support

19

Self power consumption

Working Mode ≤35mA

20.8mA

Sleeping mode≤300uA

140uA

Hibernate mode≤20uA

8uA

20

0V charger

Allowed 0V change

Not support

21

Recommend working conditions

Max continuous discharge current

20A

Max continuous charge current

15A

 cell capacity

Software matching

22

Appearance

1) Nothing part deflection

2) The status of solder is all right

3) PCM will not crook

4) Compliance with the appearance standard of BMS manufacturer

23

 Reliability test

ESD test :connect 6KV Air 10KV

 

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Pre:48V60A 16S RS485 BMS
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