Automatic re-ignition of a converter

[izentrop]

I don't see any fuse/s in this diagram.
Is it very careful? (As a precaution of course)

Well go ahead complete the...

Thinking about safety is important.
A fuse can be added at the battery output if the inverter does not have one.
A mains output circuit breaker from the inverter, a fire extinguisher and take out insurance if you want

[dede2002]

The inverter output circuit breaker is useless...

The settings of the cut-off and re-engagement thresholds are delicate, because it depends on the intensity of consumption and the internal resistance of the battery, the same for the load. For example, my mppt regulator does not reset the consumer output until it has recharged the batteries to the equalization cycle, it is not just voltage based.

If not, these small modules, they can also work in reverse? (switch on at 14V and cut at 13V), and at 24V?
It gives me an idea for regulating the voltage of my solar pumps.

[izentrop]

For example, my mppt regulator does not reset the consumer output until it has recharged the batteries to the equalization cycle, it is not just voltage based.

To start the charge, it may be able to take into account the amount of energy counted during the last charge, but for the end of charge threshold before equalization cycle it must be in voltage only I think (between 14 and 15 V depending on the type of acid or gel battery).

If not, these small modules, they can also work in reverse? (switch on at 14V and switch off at 13V)

This is normal operation.

If the module is connected when the battery has less than 14 V, it will only come into action at the high threshold (14 V in this case, the LED light comes on and the relay contact closes). The relay will remain stuck until the battery drops below 12V.

At the low threshold, 11,5 V for example, the LED goes out and the relay contact opens.

, and in 24V?

it will be necessary to modify the diagram, by replacing D2 by a zener 12 V 5 W, that should do it without risk.

[izentrop]

The NE555 supports 16V max https://www.ti.com/lit/ds/symlink/ne555.pdf
If the load is likely to reach 30 V max, it would rather be a zener of 14 V 5W

[dede2002]

I saw wrong...

Normally, the relay engages at the minimum threshold, and triggers when the battery is charged.

s-l500.jpg (46.13 KIO) Accessed 516 times

In your diagram, the relay triggers at the minimum threshold, and engages when the battery is charged.
operation is reversed...?

[izentrop]

Yes indeed, you are right, the relay should work in reverse.

[Obamot]

It's over there Izentrop where it still gropes? Has your circuit been guaranteed at 95% by Pfizer?
Oulah, not clear on the values ​​of the zener diode, the relays that work backwards, are you sure it won't blow up Môssieur the expert?

A tip for Darwenn, 1) carefully examine the list of components to buy 2) place an order 3) check on receipt if everything is correct 4) bring the necessary equipment, soldering iron and everything 4) carefully examine the diagram 5) mount everything on a test board and re-check everything 6) take a fire extinguisher 7) switch on... and 8} look at what has gone wrong and what components have burned out 9) be ready to activate the extinguisher if it burns. 10) quickly remove the cables / sockets as a precaution... Perhaps provide fire insurance?...

[izentrop]

The simplest solution is to use the same module with changeover relay

https://fr.aliexpress.com/item/32812147419.html

Repaired but to be checked

XH-M601 relay 3 RT.gif (210.31 KiB) Viewed 484 times

[Obamot]

50/50? Public opinion? Is this your last word Jean-Pierre?

[dede2002]

...
Repaired but to be checked

How it works.

The problem is that the relay will consume when the battery is discharged...