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No hay artículos en el carro Descripción:
Carga de baterías profundamente descargadas.
Recarga automática, protección contra sobretensión de la batería.
Estado de carga e indicación de estado de finalización de carga.
Seguimiento del punto de potencia máxima del panel solar.
Gestión completa de carga para baterías de litio de una sola celda.
La salida del cargador solar está diseñada para cargar una sola celda de iones de litio de polímero. La carga debe conectarse en paralelo a la batería. Cada cargador solar viene equipado con un circuito de carga de batería de seguimiento de energía CN3791 y cuatro conectores JST/PH2.0 de 2 pines preinstalados. Por defecto, hemos establecido el voltaje de retención para MPPT. Por lo tanto, tenemos 3 versiones para el entrada de voltaje 6V/9V/12V (para el voltaje de trabajo del panel solar 6V/9V/12V), muy adecuado para la aplicación del entrada de voltaje y la diferencia de voltaje de la batería es mayor. En general, es necesario utilizar un convertidor DC - DC de modo interruptor para realizar la función MPPT, mantener el voltaje de salida y el producto de corriente de carga maximizan (salida).
Parámetros:
entrada de voltaje: 12 V.
Voltaje de salida: voltaje nominal de carga completa de 3,7 V, batería de litio de 4,2 V.
Interfaz: conectores JST de 2 pines (o PH2.0)
Corriente máxima de carga: 2 A.
Frecuencia de conmutación PWM: 300 KHz.
Voltaje de carga: 4,2 V ± 1 %
Temperatura del ambiente de trabajo: -40 °C a +85 °C.
Tamaño: 45 x 20 x 9,5 mm.
El paquete incluye:
1 placa controladora de carga solar CN3791, módulo de carga de batería de litio
Eric
Comentado en los Estados Unidos el 15 de diciembre de 2024
These devices are 12v only despite the directions suggesting they make 6v versions. I emailed manufacturer and they they only make 12v. They work as stated and it performs well.
Michael E Hinshaw
Comentado en los Estados Unidos el 28 de enero de 2024
Easy in and out with JST connectors. Everything is well labeled and it seems to work just fine. Noticed today there is an LED that lights up when things are working OK. I have no idea how long these might last, but they are very inexpensive. I use it to control the panels charging a 3.7 volt LiPo battery powering an Arduino at a remote location.
Grzegorz
Comentado en los Estados Unidos el 24 de noviembre de 2020
Part failed on first test.Set a CV/CC PSU to 12V/600mA to simulate my 10W solar panel in less than full sun (since this should be around 7.2W).When connected the charge controller with a battery already connected, the voltage fell to 11.5 and the full 600mA was pulled. The battery being charged was simulated to have "died" from the lack of sun, so when the charging started, the cell voltage was around 2.5V (the cells used are rated to be drained down to this voltage).Assuming ~85% efficiency of the controller, the power pulled in should result in the charge current of 2.18A, which is higher than the max 2A current.For the first 30 minutes the controller heated up to ~60 degrees where the inductor is, after another 30 minutes I observed smoke from that spot and the inductor unsoldered from its own heat and fell off the board.My understanding from the description is that the controller will limit the charging current to 2A and giving a bigger solar panel will allow it to collect more power when not in full sun exposure and when in full sun, the controller would not utilize 100% of the solar panel.In reality, looks like the device will use all that it gets and there is no over-current or over-temperature protection on this module and if you give it enough time under too much power, it will melt.The controller NEEDS to be paired the smaller panels (guessing that the 3W would not cause the failure).If this was clear from the description, I would not complain but there was nothing suggesting that I need to limit the input current in my circuit design so that the result charging current would not pass 2A.
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