Battery langai mi gaw, n-gun dat langai a npu e shapraw lu ai wan n-gun hpe battery n-gun ngu shamying ai, C. Shi a unit hpe A·h (sh) mA·h ngu nna tsun shaga ai.
1. Theoretical atsam (C0)
Theoretical capacity ngu ai gaw, battery langai mi gaw, shamu shamawt ai arung arai yawng shang lawm ai flow-forming reaction hta shang lawm ai ngu sawn la mai ai wan n-gun hpe tsun ai. Theoretical capacity hpe Faraday a tara hte maren hti ai active material hte maren sha re ai electrochemical hte maren sha re ai active material a n-gun hpe jai lang nna hkrak hkrak sawn la mai ai.
Faraday a tara hta, wan n-gun langai gaw electrolyte ntsin hku lai wa ai shaloi, electrode ni hta chemical reaction byin ai arung arai a n-gun gaw, wan n-gun lai wa ai n-gun hte hkrak hkrak bung ai. Mathematically, ndai hpe...
Faraday a tara hta, wan n-gun langai gaw electrolyte ntsin hku lai wa ai shaloi, electrode kaw na chemical reaction byin ai arung arai a n-gun gaw, wan n-gun lai wa ai n-gun hte hkrak hkrak bung ai. Mathematically, ndai hpe ndai hku tsun dan ai:
Q gara kaw nga ai shara kaw wan n-gun gaw electrode n-gun (A·h) hku lai wa ai;
m gaw active substance a mass (g);
M gaw active substance a molar mass (g/mol);
F gaw Faraday n galai shai ai, 96500 C/mol daram (sh) 26.8 A·h/mol daram rai nga ai.
Equation (2-6) hpe mung, mass m a active substance langai a hkum tsup ai hku bai htang ai hpang, wan Q a n-gun hpe shapraw kau ai ngu ai hpe chye na la mai ai. Wan n-gun Q a n-gun gaw, electrode kaw na active substance a theoretical capacity (Cm) rai nna, mass m a active substance gaw, n-gun rawng ai lam hta tup hkrak shang lawm ai shaloi, shapraw ai wan n-gun hpe madi madun ai.
Dai majaw equation (2-6) ngu ai hpe mung ndai hku ka mai nga ai.
Dai formula hta, K gaw active material hte electrochemical hte maren sha re ai hpe madi madun ai, K= M / 26.8 [g/(A·h)] hpe madi madun ai, dai gaw 1 A·h charge hpe lu la na matu ra ai active material a mass hpe tsun mayu ai. Formula (2-7) gaw electrode active arung arai ni a theoretical atsam hpe sawn la na matu formula re. Masha law malawng lang ai electrode atsam rawng ai arung arai ni a electrochemical bung ai lam ni hpe Table 2-2 hta madun da ai. Electrochemical maren sha lang nna, electrode arung arai ni a theoretical laksan atsam hpe shingdaw mai ai.
Table 2-2 Shagan ni hte lang ai Electrode Active arung arai ni a Electrochemical rap ra ai lam ni
| Active Substance | Molar Missa/(g/mol) | Electron ni a jahpan (n) hpe hpaw shabawn da ai. | Electrochemical maren sha [g/(A·h)] |
|---|---|---|---|
| H₂ | 2.0 | 2 | 0.037 |
| Li hta; Li | 6.94 | 1 | 0.259 |
| Zn | 65.4 | 2 | 1.220 |
| Cd | 112.4 | 2 | 2.220 |
| Pb | 207.2 | 2 | 3.737 |
| MnO€ | 85.0 | 1 | 3.167 |
| Ni(OH) .m | 92.7 | 1 | 3.456 |
| PbO€ | 239.2 | 2 | 4.463 |
2. Atsam marai (Cm) masat da ai.
Rated capacity ngu ai gaw, mungdan (sh) seng ang ai department a madang ni hta tsun da ai hte maren, battery langai mi gaw, n-gun yawm dik htum ai atsam rai nga ai.
3. Kaja wa nga lu ai atsam (C)
galai shai ai ya aten na hka pru ai aten hta
Formula hta, I-- gaw discharge current hpe madi madun ai, dai gaw discharge aten t a function;
T--dai aten hpe n-gun yawm wa ai kaw nna jahkring kau ai voltage de madi madun ai.
Kata na ninghkap ai lam hte kaga lam ni a majaw, active material hpe tup hkrak n mai lang ai; ngu ai gaw, active material a jai lang ai lam gaw galoi mung 1 hta n law ai. Active material hpe jai lang ai rate hpe...
Gara kaw m gaw active material a mass rai nga ai;
m₁ ngu ai gaw, tengman ai atsam hpe shapraw ai shaloi, jai lang ai active material a mass rai nga ai.
Battery langai a tengman ai atsam gaw, n-gun dat n-gun hte grai ni htep ai. Lawa{1}}current pru wa ai aten hta, electrode polarization law wa ai, kata na n-gun jat wa ai, hka lim ai voltage lawan ai hku hkrat sum wa ai, battery a n-gun atsam yawm wa ai majaw, n-gun n-gun yawm wa ai. Dai hte maren, n law ai{3}rate discharge masa ni a npu hta, hka pru ai voltage gaw loi loi hte hkrat wa nna, battery kaw na shapraw ai atsam majing gaw, masat da ai atsam hta grau law ai.
4. Atsam rawng ai lam
Remaining capacity ngu ai gaw, battery hpe n-gun n-gun n-gun n-gun n-gun n-gun yawm mat ai hpang ngam nga ai lang mai ai atsam hpe tsun mayu ai. Ngam ai atsam hpe sawn la ai lam hte sawn la ai lam gaw, battery hpe shawng nnan lang ai aten hta, n-gun dat n-gun hte n-gun dat ai aten zawn re ai lam ni a majaw hkra machyi shangun ai, dai zawn sha, battery kaba wa ai hte jai lang ai makau grup yin a madang ni a majaw, hkra machyi shangun ai majaw, hkrak tup sawn dinglik ai lam hpe loi mi yak hkak shangun ai.
5. n-Shi Hpe Hkap La Ai Lam
n{0}}hour rate capacity ngu ai gaw, n{1}} a manu jahpu hpe n-gun dat dat ai shaloi, n-gun n-gun hpe jahkring kau ai voltage de du hkra, n-gun n-gun hpe shapraw kau ai shaloi, charge hpring ai battery kaw na pru wa ai wan n-gun hpe tsun mayu ai.
6. Usable atsam
Usable capacity ngu ai gaw, masat da ai masa ni hta, charge hpring ai battery kaw na shapraw ai wan n-gun hpe tsun mayu ai.
