Solar Battery Charger Project with LM317

Hello readers welcome to new post. Here we will discuss Solar Battery Charger Project with LM317. Currently, solar energy has become very common and is used in different projects. With the advancement in the use of renewable energies, there is use of solar energy is using very fastly.

In this project, we will make a project where we will construct the circuit used to recharge the twelve-volt battery. This circuit will come with the current and voltage regulation features and helps to charge the battery at constant volts since it has variable voltages at output terminal. This project is created with the collaboration of PCBWAY since PCB board used in this module is obtained by the best PCB suppliers. PCBWAY fulfilling the demands of their users by providing high-quality products fast delivery with less and reasonable costs. It is the best and most experienced PCB manufacturing company in China. They are equipped with high quality and latest machines for offering the best services to their users. They have features of different PCB such as single layers, double layers multilayers and other PCB services at single place. These projects were also created with their help and using their services. So let’s get started.

Table of Contents

Project Components

The components used in this projects are described here with detail.
Diode

Solar Panel
Transistor
Battery
Resistances
Voltage regulator
The components of this project is listed here. A diode is device that used for ac to dc conversion. Solar panel is connected in the board to get energy from solar and it will provided to the battery to recharge it.
Transistors are switching modules that will operate as the switch and control the operation of the circuit

What is LM317

The LM317 is a voltage regulator device that has three terminals used to voltage regulation.
It provides positive voltage regulation from 1.25 volts to thirty-seven volts according to output requirements.
There is a need of two exterior resistances for adjustment of output voltages.
It offered a line regulation of 0.01 percent and load regulation 0.1 percent.
It comprises of different features such as protection from overload current limiting and save operating function requirements.

Features of LM317

The main features of this module are described here
It has value of output current 1.5 amperes

Used to protect the overload thermal
It helps to sustain the inner short circuit current limiting area
It is used for floating operating in case of larger voltage circuits.
It comes with D2PAK-3 packaging

Symbol	Parameter	Value	Unit
Vout	Output voltage range	1.25 – 37	V
Vin – Vout	Voltage differential	3 – 40	V
RθJA	Thermal resistance, Junction to ambient	80	°C/W
RθJC	Thermal resistance, Junction to case	5	°C/W
TJ	Operating junction temperature range	0 – 125	°C
IO(MAX)	Maximum output current	1.5	A
IL(MIN)	Minimum load current	3.5 mA typical, 12 mA maximum
PD	Power dissipation	Internally Limited	W

Operation of Circuit

This circuit operates on the principle that charger charger-regulated circuit will produce the constant voltage.
In this configuration charging current moves to the voltage regulator through first diode.
The output volts and current are regulated with the regulation pinout of the regulator. The current regulated used by the battery.
The circuit shown below has a twelve-volt solar panel and a powering battery of twelve volts.
LM317 operates as a regulator and the transistor is a switch to control the operation and charging of the battery

Advantages of Circuits

The main advantages of these battery chargers are described here
It offered the variable output voltages according to circuits needed that is linked to it.
The components used in these circuits are less expensive and easy to use to it is less expensive projects and easy to construct.
If there is no sunlight then battery discharging is almost zero.

Applications

Its main applications are described here
It is used for charging lead acid and Nicol chromium batteries
This circuit offered current and voltage regulation with cut-off features in case of overvoltage.

Lm317 Equivalent

LM117, LM217, LT1117-ADJ, B29150, LM338, LM1086-ADJ, LT1086-ADJ, LM1084-ADJ.

How to Safely LongM317 Run L in a Circuit

For stable and longer working of LM317 gives an input voltage of 40V DC and a current of about 1.5 Amperes.
The use of a heatsink avoids the heating effect and operates IC inthe temperature range of -55 centigrade and below +150 centigrade.

Advantages of LM317

The main advantage of LM317 IC is small form factor and less external component requirements.
it in switched mode power supply has low noise. It is good to use for audio projects for providing low noise.

Disadvantages:

It is a linear voltage regulator that produces high heat. Heat sink used for high current circuits. if there is high input and output voltage heat sink enough to use.
Its upper voltage input value is 40V with output current is 1.5A.

Alternatives to LM317 IC

LM78XX series that comes with a 3-pin voltage regulator used for providing constant voltage. LM7805 give 5 volts and LM7809 give 9 volts
LM338 used as a replacement for high current applications for providing five ampers current.
For low dropout voltage needed LM2940 used that has dropout voltage of 0.5V at 1A output current.
LM337 N used for providing negative regulation and for high voltage LM317HV used for regulating input voltages up to 60V.

Read also

That is all about the Solar Battery Charger Project with LM317. I have explained all the parameters of this project with the details and its common applications. The board used in this was created by the best PCB services provider PCBWAY. They not only offer PCB-based services but also help the users to make projects with all the components and details that are needed. They are equipped with professional engineers and machines for creating high-quality products. So must contact them to make any projects and get PCB-based services.