Cotek Electronic BL-100MH-12 LiFePO4 Battery User Manual

Cotek Electronic BL-100MH-12 LiFePO4 Battery

Product Specification

• (CUSTOMER）:
• (SAMPLE NAME）: 4 100A
• (MODEL NAME）: JBD-SP04S034-L4S-100A-100A-B-U-H-S V1.3
• (DATE）: 2023-01-14
• (VERSION）: A01
• (SIGNATURES）:

(compiler）
(Reviewer）
(Approver）

Correction record

Version number| Page number| Reviser| Revision date| Revised content| remarks
---|---|---|---|---|---
A01| | | 2023.01.14| |
| | | | |
| | | | |
| | | | |
| | | | |

Product introduction

• JBD-SP04S034 is a software protection board scheme specially designed for 3-4 strings of lithium battery packs.
  The product adopts architecture of front-end acquisition chip by TI and MCU by NUVOTON, and some parameters can be flexibly adjusted through the host computer according to customer needs.

Configuration

supported)
(Number of NTC)| (1 built-in, 2 external)| (CAN communication)| (Not supported)
(Balance Function)| (Passive balance)| (232 Communication)| (Not supported)
UART (non-isolated)| (Standard option)| (Heating function)| (Optional)
(Switch function)| (Optional)| (Module of Bluetooth)| (supported)
(Charging current limit)| (Not supported)| (Battery packs in series)| (supported)
(Battery packs in parallel)| (Not supported)| (Secondary protection)| (Not supported)
(History storage)| (Not supported)| (LCD display)| (Optional))
(Pre-discharge function)| (Not supported)| ( Interface of LED indicator)| (Not supported)
(Buzzer)| (Not supported)| (Interface of GPS ）| (Not supported)**

Parameter Setting

Basic parameter

protection state
(Circuit resistance)| ≤10mR
(Operating temperature)| -20℃~75℃
(Structure size of PCB)
(size)| 192±2mm 105±1mm 13±2mm (LengthWidthHeight)

Note : Test should be at temperature25±2°C, and relative humidity 65±20% of surroundings.

Main parameter

(Over-voltage and Under-voltage protection)| | (Specification)| (Unit)
---|---|---|---
(Project)| MIN| TYP| MAX
(Over-voltage)| 3.600| 3.650| 3.700| V
(Over-voltage delay)| 1000| 2000| 3000| mS
(Over-voltage release)| 3.500| 3.550| 3.600| V
(Under-voltage)| 2.400| 2.500| 2.600| V
(Under-voltage delay)| 1000| 2000| 3000| mS
(Under-voltage release)| 2.700| 2.800| 2.900| V
(Under-voltage release conditions)| (Self-recovery by increasing voltage or charging)
(Over-current Charge protection value)| （Refer to configuration table of over- current protection value below）
(Over-current Charge delay)| 5| 10| 15| S
(Over-current Charge release conditions)| (Automatic recover after a delay of 32S)
(1th Over-current Discharge value)| （Refer to configuration table of over- current protection value below）
(1th Over-current Discharge delay)| 20| 30| ** 40| S
(2th Over-current Discharge value)| （Refer to configuration table of over- current protection value below）
(2th Over-current Discharge delay)| 480| 640| 800| mS
(Over-current Discharge release)| (Automatic recover after a delay of 32S)
(Short Circuit Protection)| (Short circuit protection current value)| (Refer to configuration table of over-current protection value below)
(Short circuit protection delay time)| –| 400| 600| uS
(Short circuit protection recovery)| Recover by releasing load after approximately 5s
(Short-circuit description: The short-circuit current is less than the minimum value or higher than the maximum value, which may cause the short-circuit protection to fail, and the short-circuit current exceeds 2500A , short- circuit protection is not guaranteed, and short-circuit protection testing is not recommended.)
(Short Circuit Discharge)| CHG| (High-Temperature protection value)| 62| 65| 68| ℃
(High-Temperature protection release value)| 52| 55| 58| ℃
(Low-Temperature protection value)| -3| 0| 3| ℃
(Low-Temperature protection release value)| 2| 5| 8| ℃
DSG| (High-Temperature protection value)| 72| 75| 78| ℃
(High-Temperature protection release value)| 62| 65| 68| ℃
(Low-Temperature protection value)| -25| -20| -15| ℃
(Low-Temperature protection release value)| -15| -10| -5| ℃
FET| (Temperature protection value)| 87| 90| 93| ℃
(Temperature protection release value)| 87| 70| 73| ℃
(Balance Function)**| (Balance function turn-on voltage)| 3.27| 3.30| 3.33| V
(Difference opening voltage value)| | 15| | mV
(Balance current)| 50| | 150| mA
(Balance model)| (Idle equalization)
（Balance type）| (Pulsed model)

Note : Test should be at temperature25±2°C, and relative humidity 65±20% of surroundings.

Over-current protection value configuration table

(Continuous current)| (Charge Over-current value)| (1 st discharge Over-current **value)| (The second discharge Over-current value)| (Short circuit protection value)
---|---|---|---|---
Charge| Discharge**
≤100A| ≤100A| 110±10A| 110±10A| 340±40A| 1560±150A

parameter settings

The diagram of the host computer

*Attention:

1. The version of software in upper computer is JBDTOOLS – V3.3 or above, and please choose the ‘AFE_TI_BQ76XX’ at top right corner.
2. The home page of Bluetooth app shows the one with the highest temperature among three NTCs.

Function Description

Overcharge protection and recovery

Cell overcharge protection and recovery

When the voltage of any cell is higher than the set value of the cell overcharge voltage, and the duration reaches the cell overcharge delay, the system enters the overcharge protection state, the charging MOS will turn off, and the battery cannot be charged.
After the cell overcharge protection, when the voltage of all cells drops below the cell overcharge recovery value, the overcharge protection state is released. It can also be released by discharge.

Entire overcharge protection and recovery

When the entire voltage is higher than the entire Over-voltage set value, and the duration reaches the entire overcharge delay, the system enters the overcharge protection state, turns off the charging MOS, and cannot charge the battery.
When the entire voltage drops below the recovery value of the entire voltage Over-voltage protection, the overcharge protection state is released, and it can also be released by discharge.

Over-discharge protection and recovery)

Cell over-discharge protection and recovery

When the minimum cell voltage is lower than the set value of the over- discharge voltage of the cell, and the duration reaches the over-discharge delay of the cell, the system enters the over-discharge protection state, turns off the discharge MOS, and cannot discharge the battery.
After the cell over-discharge protection occurs, charging the battery pack can release the over-discharge protection state.

Entire over-discharge protection and recovery

When the entire voltage is lower than the entire over-discharge voltage set value, and the duration reaches the entire over-discharge delay, the system enters the over-discharge protection state, turns off the discharge MOS, and cannot discharge the battery.
After the entire over-discharge protection occurs, charging the battery pack can release the over-discharge protection state.

Over-current protection and recovery in charging

When the charging current exceeds the charging protection current and the duration reaches the Over-current detection delay time, the system enters the charging Over-current protection state and cannot charge the battery. After the charging Over-current protection occurs, it will automatically recover after a delay. If you want to automatically recover or not, you can set the corresponding release time to be longer; the charging Over-current state can also be released by discharging.

Over-current protection and recovery in discharging

When the discharge current exceeds the discharge Over-current protection current and the duration reaches the Over-current detection delay time, the system enters the discharge Over-current protection state and turns off the discharge MOS. Delayed automatic recovery after discharge Over-current occurs, and the corresponding release time can be set longer if automatic recovery is required. Charging can also release the discharge Over-current protect condition. Discharge has two-level Over-current protection function, which has different response speeds for different current values, and protects the battery more reliably.

Temperature Protection and Recovery

High temperature protection and recovery in charging and discharging

When the NTC detects that the temperature of the battery cell surface is higher than the setting of high temperature protection value during charging and discharging, the management system enters the high temperature protection state, the charging or discharging MOSFET is turned off, and the battery pack cannot be charged or discharged in this state.
When the temperature of the surface of the cell drops to the high temperature recovery set value, the management system recovers from the high temperature state and turns on the charge and discharge MOS again.

Low temperature protection and recovery in charging and discharging

When the NTC detects that the temperature of the cell surface is lower than the setting of low temperature protection value during charging and discharging, the management system enters the low temperature protection state, the charging or discharging MOSFET is turned off, and the battery pack cannot be charged or discharged in this state.
When the temperature of the cell surface rises to the low temperature recovery set value, the management system recovers from the low temperature state and turns on the charge and discharge MOS again.

Balance function

The management system uses the resistance bypass method to balance the cells. During the charging process, the voltage of the highest single cell of the battery pack reaches the set equilibrium starting voltage value, and the voltage difference between the minimum voltage and the maximum voltage of the single cell of the battery pack is greater than the set value. When the value is set, the equalization function of the cells that meet the conditions is enabled, and the two adjacent equalizers cannot be enabled at the same time.
The equalization stops when the cell voltage difference is less than the set value or the cell voltage is less than the equalization turn-on voltage.

Capacity calculation

The SOC calculation of the battery pack can be accurately performed by integrating current and time. The full capacity and cycle capacity of the battery pack can be set through the host computer, and the capacity can be automatically updated after a complete charge and discharge cycle. It has the function of calculating the number of charge and discharge cycles. When the cumulative discharge capacity of the battery pack reaches the set cycle capacity, the number of cycles increases once.

Note : For newly installed batteries, please set the nominal capacity and cycle capacity according to the battery capacity, and conduct a capacity study, otherwise the capacity inaccuracy may occur. Capacity learning operation: first fully charge to Over-voltage protection, then discharge to under-voltage protection, and then charge it again.

Sleep function

When the BMS is in static state (no communication, no current, no balance and Over-voltage protection) ,and the voltage value is set above the GPS off voltage.After a delay of setting time, it will enter the sleep state.However, when voltage value is set below the GPS off voltage, the BMS will delay closing the GPS before entering sleep timing(about 1min).
After entering this state, the BMS will only reduce the frequency of detecting and its own power consumption.Communication, dial switch, charging and discharging can automatically exit the sleep mode.

Communication

Serial Communication

• (UART communication box)

• (Bluetooth module)

Note : The above tools need to be purchased separately.

The connection method: After installing the special driver for our communication box on the computer, insert the USB end of the communication box into the USB port of the computer, and connect the other end to the corresponding interface of the protection board that has been connected to the battery. Open the upper computer, click the communication port settings, select the CMO port corresponding to the communication box, and do not change other options. After confirming, click Start to read the data in the protection.
If you need to change the parameters of the protection board, you must click on the parameter page to read the parameters before changing the parameters.

COM Settings:

• Baud rate:9600;
• Parity Bit:NONE;
• Data Bit:8 bits;
• Stop Bit:1 bit

Main Material

(Accessories)
1| (Power)Wire\5PIN\HY2.0\24AWG\550mm\BlackWhiteRed| —| 1PCS
2| | —| 1PCS
3| 250mm,HY2.0 转 XH2.54| —| 1PCS

Note : The above materials may be replaced by materials with the same specifications or better specifications. If there are certification requirements, the replacement of materials is not allowed, and we need to notify our business to send samples again. The controlled specifications, the final interpretation right belongs to JBD.

Schematic And Dimensions

Dimensions and installation point drawing

Figure of structure size

Definition Of Signal Port

Illustration annotation

Schematic marking the interface label (Refer to the following figures)
100A

(Label)| (Tag number)| (Connector)| (Schematic diagram)| PIN| (Pin function definition)| （ Note ）
---|---|---|---|---|---|---
1| J1 (HY2.0-2P)| RS485 (Isolated)| | 1| RS485 – B| ( NC ）
2| RS485 – A
2| J2 (HY2.0-2P)| (Switch of discharge)| | 1| K –| (Reserved)
2| K +
3| J3\J4 (HY2.0-2P)| NTC| | 1| Connect to the negative temperature coefficient detector|
2
4| J5 (HY2.0-5P)| (Voltage detection socket)| | 1| Connect to Negative Side of Cell 1.| B-
2| Connect to Positive Side of Cell 1| BC1
3| Connect to Positive Side of Cell 2| BC2
4| Connect to Positive Side of Cell 3| BC3
5| Connect to Positive Side of Cell 5| BC4
5| J6 (HY2.0-4P)| UART\Bluetooth interface| | 1| UART – GND|
2| UART – RXD|
3| UART – TXD|
4| UART – VDD|
H-| |
B-| Negative of battery cell 1|
C-| Negative of Charger\load|

Remark:
The ground of UART in J6 is the negative of battery, which is non- isolated.Please do not communicate with the charge or load in circuit.

Environmental Suitability

The environment of working

• BMS The protective plate allows normal operation under the following conditions:
• Ambient temperature: -20°C ~ 75°C;
• Relative humidity: 5% ~ 90%;
• Atmospheric pressure: 86kPa~106kPa;

The environment of storage

• BMS should be stored in a clean and well-ventilated warehouse with an ambient temperature of -5°C~+40°C, a relative humidity of not more than 70%, and the air must not contain corrosive gases and media that affect electrical insulation, and must not be affected by any mechanical Shock or heavy pressure. Not subject to direct sunlight, and the distance from the heat source (heating equipment, etc.) should not be less than 2m. Under the above storage conditions, the BMS protection board can be stored for one year.

Packing And Shipping

Logo

• The packaging should meet the requirements of moisture-proof and anti-vibration, the packing box should be firm and reliable, the inside of the box should be lined with moisture-proof material, and the product should not move in the box.
• External carton box, veneer anti-static bag plus bubble bag packaging;

Package transportation

• During transportation, the product shall not be subject to severe mechanical impact, exposure to the sun, rain, chemical corrosive substances and harmful gases; During the loading and unloading process, the product should be handled with care, and it is strictly forbidden to throw or press it.
• The height of the packing boxes shall be less than 5 layers.

Precautions

1. This battery management system cannot be used in series generally, and requires a customized version to support series use.
2. The short-circuit protection function of this management system is suitable for a variety of application scenarios, but it does not guarantee that it can be short-circuited under any conditions. When the total internal resistance of the battery pack and the short-circuit loop is lower than 40mΩ, the capacity of the battery pack exceeds the rated value by 20%, the short-circuit current exceeds 2500A, the inductance of the short-circuit loop is very large, or the total length of the short-circuit wire is very long, please test yourself to determine whether This management system can be used.
3. When soldering the battery leads, there must be no wrong or reverse connection. If it is indeed connected incorrectly, the circuit board may be damaged and needs to be re-tested before it can be used.
4. When assembling, the management system should not directly touch the surface of the cell to avoid damage to the circuit board. Assembly should be firm and reliable.
5. During use, be careful not to touch the components on the circuit board such as lead tips, soldering iron, solder, etc., otherwise the circuit board may be damaged. Please do not use paste flux when soldering this circuit board, otherwise it may cause this circuit board to work abnormally.
6. Please Pay attention to anti-static, moisture-proof, waterproof, etc.
7. Please follow the design parameters and conditions of use, and must not exceed the values in this specification, otherwise the management system may be damaged.
8. After the battery pack and the management system are combined, please check whether the wiring is correct if you find that there is no voltage output or charging fails when the battery is powered on for the first time.
9. The Parameter,function and outlook of BMS in this specification are for reference only,please refer to actual product.

FCC Warnings

This equipment has been tested and found to comply with the limits for a Class B digital device, pursuant to part 15 of the FCC Rules. These limits are designed to provide reasonable protection againstharmful interference in a residential installation. This equipment generates, uses and can radiateradio frequency energy and, if not installed and used in accordance with the instructions, maycause harmful interference to radio communications. However, there is no guarantee thatinterference will not occur in a particular installation. If this equipment does cause harmfulinterference to radio or television reception, which can be determined by turning the equipmentoff and on, the user is encouraged to try to correct the interference by one or more of thefollowing measures:

• Reorient or relocate the receiving antenna.
• Increase the separation between the equipment and receiver.
• Connect the equipment into an outlet on a circuit different from that to which the receiver is connected.
• Consult the dealer or an experienced radio/TV technician for help.

Caution : Any changes or modifications to this device not explicitly approved by manufacturer could void your authority to operate this equipment.
This device complies with part 15 of the FCC Rules. Operation is subject to the following two conditions:
(1)This device may not cause harmful interference, and (2) this device must accept any interference received, including interference that may cause undesired operation.
This equipment complies with FCC radiation exposure limits set forth for an uncontrolled environment. This equipment should be installed and operated with minimum distance 20cm between the radiator and your body.

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References

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