The charging current of IP5306 is 2.1A. Will it explode if it charges a 3.7-4.2V, 1000mAH, 1C lithium battery?

oyhprince

The charging current of IP5306 is 2.1A. Will it explode if it charges a 3.7-4.2V, 1000mAH, 1C lithium battery? [Copy link]

 

RT1

The picture below is the IP5306 charging and discharging module

The picture below is a 3.7V 1000mAH 1C lithium battery

dcexpert

It shouldn't be a big problem in the short term, but it will be a problem in the long term, and it depends on the battery specifications. Polymer batteries will not become thinner, they will only swell.

shine9547788

It won't explode. It has charging management function and discharge management function. Please refer to the data sheet of IP5306 for details.

oyhprince

dcexpert posted on 2020-6-1 21:19 It shouldn't be a big problem in the short term, but it will be bad for a long time, and it depends on the battery specifications. Polymer batteries will not be thin, they will only bulge.

The battery is a 3.7V 1000mAH, 1C polymer lithium battery

qwqwqw2088

With protection circuit, as long as the protection circuit works properly, there is no problem

oyhprince

As shown in the figure:

If the Vin power supply of IP5306 is disconnected, then

1 Will the LED display be based on the capacity of the lithium battery?

2 Is Vout still output?

okhxyyo

Has the landlord's problem been solved?

qiushenghua

It won't explode, but bulging is inevitable.

The current during the CC stage of charging exceeds the design parameters of the lithium battery.

This IC is suitable for low-end power banks (without fast charging), and the battery capacity is generally above 2600mAh.

I suggest you look at IP5303 (I am not familiar with the products of other merchants, so I will make a judgment based on the selection table)

oyhprince

qiushenghua posted on 2020-7-2 16:19 It won't explode, but bulging is inevitable. The current in the CC stage of charging exceeds the design parameters of the lithium battery. This IC is suitable for low-end power banks (no fast charging...

May I ask what model your product is? Can you give me the website address and the online store address where it is sold?

David刀

There will be problems, this IC has no current limiting function for charging small batteries.

I guessed your idea, you want to connect an external current limiting IC. It can be used without connecting the VIN pin, but the charging indicator function will be lost.

I now have a small capacity lithium battery 18350, only 900mah. I just connected a DW06 and a TP4057 to charge the battery separately. (It is equivalent to making a separate charger on the board, and other functions are given to the original IC)

The power display is a bit helpless, a total of 6 external LEDs are required, four for power display and two for external IC charging indication.

In fact, I personally think that IP5407 is better to use. 5306 cannot discharge micro-current, but 5407 can.

sunxianrun

This chip will automatically adjust the output current according to the USB input current. If you want to limit the Bat current, you can use a USB current limiting IC on the Vin pin of the chip, so as not to interfere with the battery voltage reading.

qwqwqw2088

sunxianrun posted on 2022-1-15 02:43 This chip will automatically adjust the output current according to the USB input current. If you want to limit the Bat current, you can use a USB current limiting IC on the Vin pin of the chip, so that it will not interfere...

You can use a USB current limiting IC on the chip Vin pin

Recommend a current limiting IC