BLOG

One Lifepo4(LFP) Battery charges Another lifepo4 (LFP) Battery

Inverter

IF I have a home storage energy 51.2V 100Ah and one motor Bike

For example: My motor Bike Lifepo4 (LFP)  battery is 72v 30Ah , at some urgent case like suddenly  they shut  the Electronic  supply . how to do ?  use the lifepo4  51.2v 100Ah Battery to charge another  Battery  72v 30AH Battery . How to safety to do it ?

 1.Supplementary full professional translation of the whole solution content

It is completely feasible and safe to do it this way.
 

     1.1  Solution principle as below :
 firstly Pls Connect your 51.2V 100Ah energy storage power station to a vehicle power inverter, then plug your original  Lithium Ion Battery pack 72V electric motorcycle charger, make it connect into the inverter to charge the LFP Battery pack 72V 30Ah electric motorcycle battery.

 
    1.2 Working principle:
 

1) firstly   The direct current from the 51.2V  power station is converted into 220V household AC power by the inverter.

2  secondly )Plug your original factory 72V charger of the electric motorcycle into the inverter.

3) Thirdly The charger outputs matched voltage to charge the 72V battery with constant current and constant voltage.

 

This method completely avoids the risks caused by mismatched direct voltage connection.

         2  Power configuration reference

For a 72V 30Ah lithium battery, the original charger is usually 72V 3A.

 

It is recommended to use a pure sine wave inverter of 600W~1000W.

 

Do not use modified sine wave inverters, which may damage the charger.

          3  Charging cycle calculation

Energy storage power station: 51.2V 100Ah.

 

Electric motorcycle battery: 72V 30Ah.

 

After deducting the power loss of the inverter and charger, the energy storage station can fully charge the electric motorcycle battery about 1.8 times.

4  Safety precautions

  1. )Must use a pure sine wave inverter, avoid cheap modified sine wave models.
  2. )Choose an inverter with DC 48V input, do not buy 12V/24V versions by mistake.
  3. )Use thick wires for connection between the energy storage station and inverter to prevent overheating.
  4. )Place the inverter and energy storage power station in a well-ventilated area during charging; do not use in enclosed spaces or direct sunlight.
  5. )Do not discharge the energy storage power station to an excessively low level; stop using it when remaining power is about 20%.
 
 Finally In short, this method is safe and operable,  we don’t need any  circuit modification, just use the original motorcycle charger directly.  It just need  48V input, 600W+ pure sine wave inverter.

OF course This is just a solution for reference , about the charger is an example. if you use 10A will be different . Pls note the difference .

all the above it is a example process . so pls choose the related tools and the product , according your needs .. Pls don’t just copy.  also it is for reference , and we be not be responsible for the serious result for any operate. Pls note that. 

if you have any question, pls contact us to discuss by info@hzhim.com

اترك تعليقاً

لن يتم نشر عنوان بريدك الإلكتروني. الحقول الإلزامية مشار إليها بـ *