LS LSUM YJ Series User manual

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User Manual
LSUM YJ Series

www.lsmaterials.co.kr
LSUM YJ Series
User Manual
www.lsmaterials.co.kr
Version Date Change Description Author
V00 26 . Nov . 2021 First version SH Kim
History

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LSUM YJ Series
User Manual
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1. Overview …………………………………… 04
2. Identification of features ……………….......... 04
3. Unpacking ……………………………………. 05
4. Safety ……………………………………. 05
5. Module to module connection …………………….. 06
6. Output terminal connection …………………..... 06
7. Output connector …………………….. 07
8. Mounting ………………………………….... 09
9. Maintenance …….…………………………….. 10
Appendix I ……………….……………….…. 11
CONTENTS

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LSUM YJ Series
User Manual
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1. Overview
The LSUM YJ Module has high energy and low ESR to meet energy storage and
power delivery requirements.
The cells used in the module have 2.7V/3.0V maximum voltage rating and are
connected in series to get higher operating voltage of modules. To meet the long cycle
life requirements, the cells operate under rated voltage. In addition, all the cells are
balanced by balancing circuit connected parallel to each cell.
<Fig. 1> Product Image
2. Identification of features

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User Manual
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3. Unpacking
Inspect the shipping carton for signs of damage prior to unpacking the module.
Damage to the shipping carton or module should be reported to the carrier immediately.
Remove the module from the shipping carton and retain the shipping materials until the
unit has been inspected and is determined to be operational.
NOTE: The original shipping materials are approved for both air and ground shipment.
The module should be removed from the shipping carton by lifting the body of the
module.
4. Safety
- Do not operate above specified voltage.
- Do not operate above specified temperature rating.
- Do not touch terminals with conductors while charged. Serious burns, shock, or
material fusing may occur.
- Protect surrounding electrical components from incidental contact.
- Provide sufficient electrical isolation when working above rated voltage.
- Prior to installation and removal from the equipment, it is mandatory to fully discharge
the module.

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<Fig. 3> Parallel Connection of Modules.
<Fig. 2> Series Connection of Modules
5. Module to module connection
- There are series and parallel connection for High power

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6. Output terminal connection
The LSUM YJ Modules are designed to connect directly to a ring or a bus bar. The
positive and negative terminalshave each hole for the screw. The positive terminal
threaded size is M8 and negative terminalis M10. Wave washers are required to ensure
long term, reliableconnections.
When tightening the terminal bolt, a torque of 20N-m for the M8 bolt shouldbe used.(30N-
m for the M10 bolt) Becausethe moduleshave a very low ESR, total ESR will be affected
by a ring lug, bus bar or torque. Therefore, it needs more attention to assemble the modules.
And appropriateprotectionand sealingshouldbe usedon both module terminals to avoid
shock hazards and corrosion.
7. Output connector
- The output of connector is tabulated below.
1
2 3
4
<Fig. 4> Monitoring connector
Pin # YJ01/YJ02 YJ03/YJ04
Pin out Signal Pin out Signal Max.
current
1 TEMP Pin1 or Pin2 TEMP Pin1 or Pin2 -
2 TEMP Pin2 or Pin1 TEMP Pin2 or Pin1 -
3 Not used - Over Voltage
Alarm
High-inactive
Low-active 5mA
4 Not used - GND - -

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Temperature (YJ01,YJ02)
- Pin 1, 2 is connected with a NTC thermistor for temperature monitoring.
According to temperature variation in the module, the resistance of the thermistor is
determined. The resistance measured through the thermistor relates to temperature
according to the DK Sensor 10K@ 25℃resistance to temperature chart for the
appendix I.
- Pin 3, 4 are not used.
Temperature & Over voltage alarm (YJ03,YJ04)
- Pin 1, 2 is connected with a NTC thermistor for temperature monitoring.
- Pin 4 is connected with monitoring connector output signals receiver circuit’s
ground.The output signals are isolated from the capacitor voltage and from
chassis ground.
- When a cell in the module goes into over voltage condition, pin 3 has alarm signal.
When every cell voltage is not over voltage state, the output of Pin 3 is high. If any
cell in the module is exceeding 2.6V or 2.9V, the voltage balancing circuit
becomes active and starts to discharge the cell.
- Nevertheless, if voltage keeps rising due to higher current, over voltage alarm
become operating at 2.8V or 3.1V as output of Pin 3 becomes low. Then, user
should stop charging.
-In order to use the signal, the user needs to attach a pull-up resistor(typically 1kΩ)
to pin 3 and a 5V supply.

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<Fig. 5> Bracket Positions
8. Mounting
The modules should not be mounted in locations where they are directly exposed to the
environment.
-You can easily adjust the Mounting Position through assemble the bracket.
-Bracket doesn’t include the module.

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9. Maintenance
Power Rating
If the applied voltage is over rated voltage, charging the module should be stopped.
And the allowable low voltage level of the module depends on the user’s requirements,
but full discharging to 0V does not affect the module performance.
Temperature
The module has its optimal operating temperature range of -40 to 65. Over 70℃,
charging and discharging should be stopped to preserve its performance and life cycle.
Do not expose to direct sunlight
For installation do not make the module expose to direct sunlight due to temperature
increase inside the module.
Maintenance
The module has its projected life over 10years at rated voltage and +25℃. However
the life cycle of the module may be decreased in high temperature condition or over
voltage charging.
If following abnormal module performances are detected, operation should be stopped
and checking the electrical & mechanical connections is recommended.
- Detection of high temperature in normal operating conditions
- Internal resistance increase or initial voltage drop increase
- Deformation of the module case

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LSUM YJ Series
User Manual
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Appendix I

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LSUM YJ Series
User Manual
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Appendix I

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LSUM YJ Series
User Manual
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Appendix I