Announcement

Collapse
No announcement yet.

Laptop battery charging circuit

Collapse
This is a sticky topic.
X
X
 
  • Filter
  • Time
  • Show
Clear All
new posts

    #21
    Re: Laptop battery charging circuit

    Hello,

    I have a question to the following:

    DCIN/VCC: input voltage from the AC adapter, should be close to AC adapter voltage

    Does the input voltage always come from the AC Adapter? Is the charger IC inactive when running from battery? I was trying to understand the input voltage for Quanta FH5 mainboard, there seems to be no connection to the battery rail although in every IC charger datasheet you read about input from battery and in other schematics VCC is connected to the battery input.

    Comment


      #22
      Re: Laptop battery charging circuit

      Yes indeed, some platforms only have the AC adapter connected to the DCIN/VCC pin of charger IC, and others have the DCIN/VCC pin of the charger IC connected to both battery and AC adapter (through a dual diode).
      I don't have a definitive explanation about it.
      It makes sense to have the battery connected to it if you still use some features of the charger IC like current sensing on battery only, but at the same time some platforms provide these features on battery only even though the DCIN/VCC pin is not connected to the battery. So I assume they take the power internally from the battery rail.
      OpenBoardView — https://github.com/OpenBoardView/OpenBoardView

      Comment


        #23
        Re: Laptop battery charging circuit

        Thanks so mush

        Comment


          #24
          Re: Laptop battery charging circuit

          thank you for the detailed post piernov, exactly what ive been searching for...

          Comment


            #25
            Re: Laptop battery charging circuit

            Thanks a lot

            Comment


              #26
              Re: Laptop battery charging circuit

              Thank you so much for the precious informations!!

              Comment


                #27
                Re: Laptop battery charging circuit

                Thanks

                Comment


                  #28
                  Re: Laptop battery charging circuit

                  Thanks for this very good topic.
                  Last edited by SMDFlea; 07-18-2021, 11:17 AM. Reason: translated

                  Comment


                    #29
                    Re: Laptop battery charging circuit

                    Thank you for the post.

                    Comment


                      #30
                      Re: Laptop battery charging circuit

                      Thank you @Piernov!

                      I have a question. I have 2 identical laptops (HP Pavilion Gaming Laptop 15-dk011la)

                      1 does charge the other doesn't. Both batteries charge in one laptop. Both adapters are recognized in both laptops.

                      But one of them refuses to charge the battery. What should I check first?. The battery is detected correctly in the laptop that doesn't charge (powercfg /batteryreport OK). It discharges just fine. But charging doesn't work.

                      Aný ideas?

                      Comment


                        #31
                        Re: Laptop battery charging circuit

                        Very helpful information, thanks

                        Comment


                          #32
                          Re: Laptop battery charging circuit

                          Thank You

                          Comment


                            #33
                            Re: Laptop battery charging circuit

                            Good job bro

                            Comment


                              #34
                              Re: Laptop battery charging circuit

                              great job thanks for sharing

                              Comment


                                #35
                                Re: Laptop battery charging circuit

                                Thanks
                                very good informations

                                Comment


                                  #36
                                  Re: Laptop battery charging circuit

                                  thanks

                                  Comment


                                    #37
                                    Re: Laptop battery charging circuit

                                    Thank you piernov. This helped me a lot understanding how those circuits work!

                                    Comment


                                      #38
                                      Re: Laptop battery charging circuit

                                      Thank you. I helped me a lot.

                                      Comment


                                        #39
                                        Re: Laptop battery charging circuit

                                        well done, love it

                                        Comment


                                          #40
                                          Re: Laptop battery charging circuit

                                          Thanks so much

                                          Comment

                                          Working...
                                          X