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LBS-BMS

Li-ion battery management system

INSTRUCTION MANUAL

VERSION 1.2

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Table of Contents

Table of Figures………………………………………………………………………………………3

Important Warning……………………………………………………………………………...……4

Components…………………………………………………………………………………………..5

Preparation before start-up…………………………………………………………………………...8

Connection of the components……………………………………………………………………….9

Connection of the battery monitor cables…………………………………………………………….9

Connection of the balancing modules…………………………………….………………………...13

Connection of the contactor module and power supply…………………………………………….13

Connection of the power supply…………………………………………………………………….14

Switching on………………………………………………………………………………………...15

System error…………………………………………………………………………………………16

Appendix……………………………………………………………………………………………17

Technical data………………………………………………………………………………………17

LBS BMS…………………………………………………………………………………………...17

Release Notes……………………………………………………………………………………….17

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Table of illustrations Figure 1: Control Module…………………………………………………………………………….5

Figure 2: Temperature sensor cable…………………………………………………………………..5

Figure 3: Connection cable to the control module…………………………………………………...6

Figure 4: Power supply module and contactors (integrated 12V controller)………………………...6

Figure 5: Power supply module and contactors (without controller)………………………………...7

Figure 6: Balancing module and battery monitor cable……………………………………………...7

Figure 7: Configuration of the 12S 1P 10 battery monitor cable……………………………….…..10

Figure 8: Configuration of the battery monitor cable 12S 2P………………………………………11

Figure 9: Configuration of the battery monitor cable 12S 4P………………………………………12

Figure 10: Detail of the contactor module and power supply………………………………………13

Figure 11: Connection of the LBS BMS power supply……………………………………………..14

Figure 12: Controller start-up screen………………………………………………………………..15

Figure 13: Information displayed on the main screen………………………………………………16

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Important Warning

Lithium Battery Solution cannot ensure the proper operation of the LBS BMS Lithium Ion

Battery Management System if the installation has not been done properly.

Lithium Battery Solution recommends that installation be performed by a Lithium Battery

Solution approved installer.

Lithium Battery Solution recommends always using a power shutdown system to prevent

battery overvoltage. The power supply and contactor module available with the LBS BMS model is

designed to supply power to the power and load cut-off contactors. Failure to install this system can

cause property damage, personal injury and even death.

Lithium Battery Solution ensures that the LBS BMS lithium-ion battery management system

is designed to display relevant information and perform balancing of the lithium-ion cells of the

battery pack for which it was designed. Any other use or modifications to the system will void the

warranty and may result in property damage, personal injury or even death.

It is the responsibility of the user to ensure that the system is functioning properly and to

stop the use of the system and cut power of the system if the LBS BMS Lithium Ion Battery

Management System displays an error condition or is no longer powered. Leaving a faulty or

inactive system in operation can cause property damage, personal injury, and even death.

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Components

Depending on the configuration of your systems some of the following components will be

required.

Figure 1 : Control module

Figure 2 : Temperature sensor cables

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Figure 3 : Control module connection cables

Figure 4 : Power supply module and contactors (integrated 12V regulator)

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Figure 5 : Power supply module and contactors (without controller)

Figure 6 : Balancing module and battery monitor cable

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Preparation before starting

The LBS BMS lithium-ion battery management system has been tested and calibrated at the

factory to work with its corresponding battery pack.

First make sure you have all the components: the control module, the control module connection

cable, the power and contactor module, the balancing modules and the battery monitor cables.

Some components are often pre-connected to the battery pack if you have purchased a system

that includes the battery pack.

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Connecting the components Before starting the system make sure that all components are connected correctly.

Connecting Battery Monitor Cables

If you have not already done so, connect the battery monitor cables to the battery pack, you need

one cable for each 6-cell pack that will be connected to a balancing module, Figures 7,8 and 9

show you how to connect these cables for the 12S/1P, 12S/2P and 12S/4P configurations

respectively.

CAUTION : Please ensure proper connection of the battery monitor cable or permanent

damage will occur to the balancing module connected to this cable.

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Figure 7 : 12S 1P battery monitor cable configuration

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Figure 8 : 12S 2P Battery Monitor Cable Configuration

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Figure 9 : 12S 4P battery monitor cable configuration

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Balancing module connections

Now connect each of the battery monitor cables to a balancing module, the order in which the

cables are connected is not important, the system manages the balancing automatically. If you

have a cable with 2 temperature sensors, connect it to either of the balancing modules, the system

will automatically take the measurement of the 2 temperatures.

Contactor module connection and power supply

The LBS BMS system offers the possibility of using a connection module for contactors and

power supply, thus simplifying the connection and management of contactors.

The following figure details the connections of the module, the output of the contactors is 12 Vdc

for a maximum of 2.25A for the total of the outputs. The module also exists without internal

regulator allowing to use your 12 Vdc power supply or another voltage if necessary.

Figure 10: Detail of the contactor and power supply module

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Connecting the power supply

The last step is to connect the power supply to the system, if this connection has not been made at

the factory, depending on the configuration of your system, connect the positive and negative

power supply to the battery pack or to a reliable DC power supply providing a minimum of 1.5A

for the 24 to 50Vdc input and 3A for the 12Vdc supply. The connection configurations are shown

in the following figure. Also connect the connection cable to the controller module.

Figure 11 : Connection of the power supply for the LBS-BMS

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Switching on Turn the control module switch to position 1 (ON), after a short time the start-up screen should

appear. If a white screen remains for more than 5 seconds, return the switch to the 0 (OFF)

position and then to the 1 (ON) position quickly.

The start screen is displayed for 10 seconds and informs about the type of BMS, the system

configuration and the installed program version.

Figure 12: Controller start screen

Then the main screen appears showing the system status values. The following figure shows the

different values and states displayed.

System Configuration

Software version

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Figure 13 : Information displayed on the main screen

System Error The LBS BMS systems are designed to operate continuously and be easy to use, the cell

balancing is automatically activated as soon as the average voltage is 3.7 volts in standard

configuration and as soon as the voltage difference is more than 5 millivolts. Important

information and system status are displayed at all times. If an error occurs, the system will

alternate between a red screen indicating the detected error and the information screen. In the

event of an error, the outputs of the LBS BMS system are automatically disabled to prevent the

system from being left in an error state during operation.

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Appendix

Technical data

LBS BMS

Supply voltage (main module) -------------------------------------- 12 à 60 volts DC

Supply voltage (contactors) ------------------------------------------ 12 à 24 volts DC

Maximum current (main module) ---------------------------------- 250 mA

Maximum current (total contactors) ---------------------------------2.25 A

Operating temperature ------------------------------------------------ 10C à 40C

Storage temperature ---------------------------------------------------40C à 65C

Maximum relative humidity ---------------------------------------- 90% (uncondensed)

Dimensions (module principal) ------------------------------------ 210mm x 120mm x 60mm

-------------------------------------------------------------------------- 8.27po x 4.72po x 2.32po

Dimensions (module alimentation et contacteurs) -------------- 110mm x 50mm x 26mm

-------------------------------------------------------------------------- 4.33 po x 1.96 po x 1.02 po

Release Notes

Version 1.0: Initial Code

Version 1.1: Start screen added showing system configuration.

Display of the balancing cells.

Version 1.2: Correction of temperature display if there is only one sensor wire.

Display no temperature sensor connected instead of an error.

Management of different battery pack configurations.

Simplification of the display of the SOC and remaining Wh, based on medium

voltage.

Stop charging only if the temperature is too low, instead of an error message.