Power battery manufacturer explanation of the working principle of battery charger.801620 polymer battery

　　high Lithium battery manufacturers believe that the simple charger can automatically charge the battery below 24V. The larger charging current can reach 2.5A, and it has constant current charging and full -stop functions. 220V Corporal Electric Meridian Transformer T Slottering U2, VC 1, R4, VT1, VT1, R4, current meter PA, VT1, through the VD1 ~ VD4 format. VT2 to the negative electrode B charging GB to adjust the size of RP1, that is, adjust the base potential of VT1 and VT2, thereby adjusting the ICB of VT2, that is, the charging current.

　　Since the voltage of the battery can reflect its charging situation, taking the battery with a nominal voltage of 12V as an example, when the battery voltage rises to (12/2)*2.5 = 15V, the VT3 is saturated, K1 gets electricity and combined, often Close the contact K1-2 disconnect, cut off the charging circuit, and the charger stops charging. Adjust RP2, you can set the upper limit of self -parking batteries. LED1 is the power supply indicator. LED2 is the charging indicator. The larger the charging current, the brighter the LED2, the darker the other. The charging current of the battery is the time value of the battery and the charging ratio. If there is a battery of 24V and 6AH, the charging current is about = (6/10) x (1+20%) = 0.72A. The stop limit is (24/2) x2.5 = 30V.

　　The battery charger is divided into high -frequency machines and industrial frequency machines: The industrial frequency machine is mainly achieved by transformer transformers. The high frequency is mainly used to change the frequency through VMOS and IGBT. The transformer changes the voltage implementation. According to different principles of power, it is mainly divided into single tube positive excitement, double tube positive excitement, semi -bridge, full bridge, cut wave, etc.

　　In the mid -1960s, American scientist Marce conducted a lot of experimental research on the charging process of opening batteries, and proposed the acceptable charging curve that can be accepted by the premise of lowering gas rates. Experiments show that if the charging current changes according to this curve, the charging time can be greatly shortened, and it has no effect on the capacity and life of the battery. In principle, this curve is called a relatively better charging curve.

　　After the battery is discharged, the DC electricity uses the battery to restore the working ability through the direction of the discharge current. This process is called the battery charging. When the battery is charged, the battery positive electrode is connected to the power supply positive electrode. The battery negative electrode is connected to the negative electrode of the power supply. The charging power supply voltage must be higher than the total power of the battery. The charging method has two types: constant current charging and constant voltage charging.

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