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Solar Charge and Discharge Controller
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Solar Charge and Discharge Controller

With the advanced dual-peak or multi- peak tracking technology, when the solar panel is shadowed or part of the panel fails resulting in multiple peaks on the I-V curve, the controller is still able to accurately track the maximum power point.
A built-in maximum power point tracking algorithm can significantly improve the energy utilization efficiency of photovoltaic systems, and raise the charging efficiency by 15% to 20% compared with the conventional PWM method.

Quantity:
  • BR Solar

Solar Charge and Discharge Controller


MPPT-controller1-

1. Features:

  • With the advanced dual-peak or multi- peak tracking technology, when the solar panel is shadowed or part of the panel fails resulting in multiple peaks on the I-V curve, the controller is still able to accurately track the maximum power point.

  • A built-in maximum power point tracking algorithm can significantly improve the energy utilization efficiency of photovoltaic systems, and raise the charging efficiency by 15% to 20% compared with the conventional PWM method.

  • A combination of multiple tracking algorithms enables accurate tracking of the optimum working point on theI-V curve in an extremely short time.

  • The product boasts an optimum MPPT tracking efficiency of up to 99.9%.

  • Advanced digital power supply technologies raise the circuit's energy conversion efficiency to as high as 98%.

  • Different charging program options including those for gel batteries, sealed batteries and open batteries, customized ones, etc. are available.

  • The controller features a limited current charging mode. When the solar panel power exceeds a certain level and the charging current is larger than the rated current, the controller will automatically lower the charging power and bring the charging current to the rated level.

  • Instantaneous large current startup of capacitive loads is supported.

  • Automatic recognition of battery voltage is supported.

  • LED fault indicators and an LCD screen which can display abnormality information help users to quickly identify system faults.

  • Historical data storage function is available, and data can be stored for up to a year.

  • The controller is equipped with an LCD screen with which users can not only check device operating data and statuses, but also modify controller parameters.

  • The controller supports standard Modbus protocol, fulfilling the communication needs of various occasions.

  • All communications are electrically isolated, so users can rest assured in usage.

  • The controller employs a built-in over-temperature protection mechanism. When temperature surpasses the set value, the charging current will decline in linear proportion to the temperature and discharging will be halted so as to curb the temperature rise of the controller, effectively keeping the controller from being damaged by overheat.

  • With the help of an external battery voltage sampling function, battery voltage sampling is exempted from the effect of line loss, making control more precise.

  • Featuring a temperature compensation function, the controller can automatically adjust charging and discharging parameters in order to extend the battery's service life.

  • The controller also features a battery over-temperature protection function, and when the external battery temperature exceeds the set value, charging and discharging will be shut off so as to protect components from being damaged by overheat.

  • TVS lighting protection


2. Appearance picture is as below

MPPT-controller2-


No.

Item

No.

Item

1

Charging indicator

10

Battery"-" interface

2

Battery indicator

11

Load"-" interface

3

Load indicator

12

Battery•+• interface

4

Abnormality indicator

13

Load "+" interface

5

LCD screen

14

External temperature sampling interface

6

Operating keys

15

Battery voltage compensation interface

7

Installation hole

16

RS485 communication interface

8

Solar panel "+" interface

17

RS232 communication interface

9

Solar panel"-" interface




3. Wiring diagram is as below

Remove the two screws on the solar charge controller panel, and then start wiring. For installation security, we recommend the following wiring sequence. However, wiring without following this order will not damage the solar charge controller. 


MPPT-controller3- 

1. External temperature sampling interface connection

2. Battery voltage sampling line connection

3. Communication cable connection

4. Connect power line

  • Warning: Risk of electric shock! We strongly recommend access insurance or circuit breaker at photovoltaic array end, load end and battery end, to prevent electric shock from occurring during wiring or misoperation. Before wiring, ensure that insurance or circuit breaker is disconnected.

  • Warning: High pressure danger! Photovoltaic array may generate very high open circuit voltage. Before wire connection, disconnect the breaker or insurance. Be careful in the process of wiring.

  • Warning: Risk of explosion. Short circuit of battery positive and negative terminals and wires connected to them will cause fire or explosion. Please be careful during operation.

Please connect battery first, then connect load, and finally connect the solar panel, please follow the connection mode of "+" first and then "-".

5. Power On

Tip: ML series solar charge controller only starts the solar charge controller via wiring at the battery end, but ML - LI can start the solar charge controller via power of PV array.. This applies to starting the solar charge controller and activating lithium battery when lithium battery BMS is in the protection state and cannot export electricity externally.

When all the power line connections are firm and reliable, recheck whether the wiring is correct, and whether positive and negative ends are connected reversely. After confirmation, connect battery fuse or circuit breaker, observe whether LED indicator is lit, and whether LCD screen displays content. If there is no display, disconnect the fuse or circuit breaker immediately and recheck whether the circuit connection is correct.

If battery is powered on normally, connect the solar panel. If solar charge controller charging indicators are on normally or flashing, start battery charging. When battery and photovoltaic is well connected, then connect load fuse or circuit breaker. At this time, you can use manual mode to test whether the load On and Off is normal. See load working mode and operation.

  • Warning: When the solar charge controller is under normal charging state, disconnecting battery connection will affect solar charge controller DC load. In a severe case, the load can be damaged.

  • Warning: Within 10 minutes after solar charge controller charging stops, battery reverse polarity operation may damage internal components of the solar charge controller.

  • Attention:

    1) Battery insurance installation site should be as close as possible to the battery end. Recommended installation distance shall be no more than 150 mm.

    2) When solar charge controller is not connected to a remote temperature sensor, battery temperature is a fixed value of 25 °C.

    3) If the inverter is connected in the system, please connect inverter directly with battery, and do not connect solar charge controller with the load

6. Close wiring cover


4. Product Specification Parameter

Parameter

Value

Model

BR4860

System voltage

12V/24V/36V/48V Auto

No-load loss

0.7 W to 1.2W

Battery voltage

9V to 70V

Max. solar input voltage

150V (25°C), 145V (-25°C)

Max. power point voltage range

Battery voltage + 2V to 120V

Rated charging current

60A

Rated load current

20A

Max. capacitive load capacity

10000uF

Max. photovoltaic system input power

800W/12V; 1600W/24V; 2400W/36V; 3200W/48V

Conversion efficiency

≤98%

MPPT tracking efficiency

> 99%

Temperature compensation factor

-3mv/*C/2V (default)

Operating temperature

-35°C to +45*C

Waterproof level

IP32

Weight

3.6kg

Communication method

RS232 RS485

Altitude

≤3000m

Product dimensions

285*205*93mm


5. Some Pictures of Customers’ visit


客户来访- 


6. Some More Pictures of Customers’ feedback


客户反馈- 


7. If You Want To Partner With Us, Please Contact Us:

Dear Sir Or Purchasing Manager,

Thanks for your time reading our Solar Charge and Discharge Controller website carefully, Please choose your wanted models and send us by the mail with your wanted purchasing quantity.

Mob./WhatsApp/Wechat/Imo.:+86-13505277754    

Tel:+86-514-87111151  

E-mail:admin@cnsolarlight.com

Sales H.Q.: No.77 at Lianyun Road, Yangzhou City, Jiangsu Province, P.R.China

Addr.:Industry Area of Guoji Town, Yangzhou City, Jiangsu Province, P.R.China

Thank you again for your time and hope business together for a big market.

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Yangzhou Bright Solar Solutions Co.,Ltd
Tel:+86-
13505277754(Viber/WhatsApp/Wechat)   +86-514-87111151 
E-mail:admin@cnsolarlight.com
Sales H.Q.: No.77 at Lianyun Road, Yangzhou City, Jiangsu Province, P.R.China
Addr.:Industry Area of Guoji Town, Yangzhou City, Jiangsu Province, P.R.China
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