Dɛn ne discharge performance?
Discharge adwumayɛ
Ankasa{0}}a wɔayi no afi hɔ
Self-discharge kyerɛ adeyɛ a battery tumi a wotumi de di dwuma no so tew ankasa esiane nnuru a ɛba ara kwa anaasɛ wɔanhyɛ da a ɛba battery no mu nti. Ɛfa redox nneyɛe a ɛba ara kwa wɔ electrode nneɛma no mu ho titiriw. Wɔ electrode abien no mu no, electrode a enye no nya ankasa{3}}discharge kɛse, a ɛsɛe nneɛma a ɛyɛ adwuma. Battery self-discharge ne battery storage tebea horow wɔ abusuabɔ kɛse.
Self-discharge rate
Self-discharge rate kyerɛ rate a battery hwere ahoɔden bere a ɛtwetwe ne ho wɔ no-load tebea mu bere a wɔde sie. Wɔda self-discharge rate adi sɛ ɔha biara mu nkyekyɛmu a ɛyɛ battery ahoɔden a ɛso tew wɔ bere unit biara mu (ɔsram anaa afe).
Wɔ fomula no mu no, Ah1 gyina hɔ ma battery no tumi bere a wɔde sie (A·h);
Ah_b gyina hɔ ma battery no tumi wɔ bere a wɔde asie akyi (A·h);
t gyina hɔ ma bere a battery no de sie (asram anaa mfe).
Mpɛn pii no, self-discharge rate no fa bere ne atwa yɛn ho ahyia hyew ho. Dodow a ɔhyew a atwa yɛn ho ahyia no kɔ soro no, dodow no ara na self-discharge phenomenon no da adi kɛse. Enti, ɛsɛ sɛ wɔsan hyɛ batere bere ne bere mu bere a wɔde asie bere tenten na wɔde asie wɔ ɔhyew ne ɔhyew tebea a ɛfata mu no.
Nsuo a Ɛgu Mu no Mu dɔ
Depth of Discharge (DOD) yɛ ɔha biara mu nkyekyɛmu a ɛwɔ tumi a wɔde gu nsuo mu kɔ tumi a wɔahyɛ sɛ wɔmfa nkɔ, na ne akontabuo abusuabɔ ne State of Charge (SOC) te sɛ deɛ ɛdidi soɔ yi:
DOD=1-S0C na ɛyɛ
Sɛnea batere a ɛto so abien no mu dɔ no nya nkɛntɛnso kɛse wɔ batere a ɛto so abien nkwa nna so. Mpɛn pii no, dodow a batere a ɛto so abien no mu nsu mu dɔ no, dodow no ara na ne nkwa nna yɛ tiaa. Enti, ɛsɛ sɛ wɔkwati sɛ wɔbɛtow batere a ɛto so abien no akɔ akyiri sɛnea wobetumi bere a wɔde batere redi dwuma no.
Nniso a wɔde yi obi fi nipadua mu
Discharge regime no kyerɛ tebea ahorow a wɔakyerɛ bere a battery rebɔ, titiriw nea ɛka ho ne discharge rate (current), termination voltage, ne temperature.
(1) Discharge current Discharge current kyerɛ sɛnea current no kɛse te bere a battery no retu. Sɛnea discharge current no kɛse te no nya battery no adwumayɛ ho nsɛnkyerɛnne ahorow so nkɛntɛnso tẽẽ. Enti, sɛ wɔde batere no tumi anaa ahoɔden reba a, ɛsɛ sɛ wɔkyerɛ sɛnea nsu a ɛretu no kɛse ne tebea horow a ɛde batere no ba. Wɔtaa da discharge current adi sɛ discharge rate, a ɛkyerɛ rate a battery no de charge. Wobetumi ada no adi wɔ akwan abien so: bere dodow ne dodow dodow.
Bere dodow yɛ nsuo dodoɔ a wɔda no adi wɔ bere a wɔde gu mu (h) mu, kyerɛ sɛ, berɛ (h) a ɛhia na wɔde afiri tumi a wɔahyɛ no agyiraeɛ wɔ nsuo a ɛfiri nsuo mu nsuo pɔtee bi mu. Wɔtaa da no adi sɛ C/n, baabi a C yɛ tumi a wɔahyɛ no agyirae na n yɛ discharge current pɔtee bi. Wɔsan frɛ bere dodow a wɔde yɛ adwuma dɔnhwerew biara. Sɛ nhwɛso no, sɛ battery bi tumi a wɔahyɛ sɛ ɛyɛ 50A·h, na ɛma ahoɔden a ɛyɛ 5A a, ɛnde bere dodow no yɛ 50A·h/5A=10h, na wɔka sɛ batere no tumi fi nnɔnhwerew 10 mu. Sɛnea yebetumi ahu afi akontaabu kwan no so no, dodow a bere a wɔde nsu a wɔde gu mu no gyina hɔ ma no yɛ tiaa no, dodow no ara na nsu a wɔde gu mu no yɛ kɛse; nea ɛne no bɔ abira no, dodow a bere tenten a wɔde discharge rate gyina hɔ ma no, dodow no ara na discharge current a wɔhwehwɛ no sua.
Discharge rate no kyerɛ mprempren output a battery no de ba bere a ɛbɔ ne rated capacity wɔ bere pɔtee bi mu no. Ɛyɛ pɛ wɔ akontaahyɛde mu ne tumi a wɔahyɛ no mmɔho abien. Sɛ nhwɛso no, 3C discharge rate kyerɛ sɛ discharge current no yɛ rated capacity mmɔho abiɛsa. Sɛ battery no tumi yɛ 15A·h a, ɛnde ɛsɛ sɛ discharge current no yɛ...
Sɛnea wɔtaa yɛ no, wobu nsuo a ɛtwetwe nsuo a ɛba fam 1/3C sɛ ɛba fam-rate, 1/3C kɔsi 3C yɛ medium-rate, na ɛboro 3C yɛ high-rate.
(2) Discharge Termination Discharge termination voltage no ne battery nneɛma no wɔ abusuabɔ tẽẽ na nneɛma ahorow te sɛ battery nhyehyɛe, discharge rate, ne ambient temperature nya so nkɛntɛnso. Mpɛn pii no, wɔ bere a ɔhyew a ɛba fam, - mprempren nsu a ɛkɔ soro no, electrode polarization yɛ kɛse, nneɛma a ɛyɛ adwuma ntumi mfa nni dwuma koraa, na battery ahoɔden so tew ntɛmntɛm. Enti, wobetumi akyerɛ termination voltage no sɛ ɛba fam bere a low-temperature anaasɛ high-current (high-rate) discharge. Wɔ low-current discharge mu no, electrode polarization sua, wobetumi de nneɛma a ɛyɛ adwuma adi dwuma koraa, na wobetumi akyerɛ termination voltage no sɛ ɛkorɔn.
Wɔ atifi hɔ adwumayɛ ho nsɛnkyerɛnne atitiriw no akyi no, wɔhwehwɛ nso sɛ batere no nyɛ awuduru, ɛnyɛ nea ɛde efĩ anaasɛ nsɛe mma nneɛma a atwa ho ahyia no, ɛnyɛ nea ahobammɔ wom sɛ wɔde bedi dwuma, ɛwɔ charge adwumayɛ pa ne charge adwumayɛ a ɛyɛ mmerɛw, ɛbɛyɛ vibration-resistant, enni memory effect biara, ɛnyɛ nea ɛyɛ mmerɛw sɛ wobɛsesa na woahwɛ so.
