Ngokusetshenziswa kwamabhethri e-lithium, ukusebenza kwebhethri kuyaqhubeka nokubola, ikakhulukazi njengokubola kwamandla, ukwanda kokumelana kwangaphakathi, ukwehla kwamandla, njll. Ngakho-ke, izici ezithinta ukumelana kwangaphakathi kwebhethri zichazwa ngokokwakheka kwesakhiwo sebhethri, ukusebenza kwempahla eluhlaza, inqubo yokukhiqiza nezimo zokusebenzisa.

Ukumelana ukumelana okutholwa yibhethri ye-lithium lapho i-current igeleza ngaphakathi kwebhethri uma isebenza. Ngokuvamile, ukumelana kwangaphakathi kwamabhethri e-lithium kuhlukaniswe ukuphikiswa kwangaphakathi kwe-ohmic kanye nokumelana kwangaphakathi kwe-polarization. Ukumelana kwe-ohmic kwangaphakathi kwakhiwe ngezinto ze-electrode, i-electrolyte, ukumelana ne-diaphragm kanye nokumelana nokuxhumana kwengxenye ngayinye. Ukumelana kwangaphakathi kwe-polarization kubhekisela ekuphikiseni okubangelwa i-polarization ngesikhathi sokuphendula kwe-electrochemical, okuhlanganisa ukumelana kwangaphakathi kwe-electrochemical polarization kanye ne-concentration polarization ukumelana kwangaphakathi. Ukumelana ne-ohmic kwangaphakathi kwebhethri kunqunywa ukuguquguquka okuphelele kwebhethri, futhi ukumelana ne-polarization yangaphakathi kwebhethri kunqunywa i-coefficient yesigaba esiqinile sokusabalalisa se-lithium ion kwinto esebenzayo ye-electrode.

Ohm ukumelana

Ukumelana ne-ohmic kuhlukaniswe ikakhulukazi izingxenye ezintathu, eyodwa i-ionic impedance, enye i-electronic impedance, kanti eyesithathu i-impedance yokuxhumana. Sithemba ukuthi ukumelana kwangaphakathi kwebhethri ye-lithium kuncane ngangokunokwenzeka, ngakho-ke sidinga ukuthatha izinyathelo ezithile zokunciphisa ukumelana kwangaphakathi kwe-ohmic kulezi zinto ezintathu.

I-ion impedance

Ukumelana ne-ion yebhethri ye-lithium kubhekisela ekumelana nokudluliswa kwe-lithium ion ngaphakathi kwebhethri. Kubhethri ye-lithium, ijubane lokufuduka kwe-lithium ion kanye nejubane le-electron conduction lidlala indima ebaluleke ngokulinganayo, futhi ukumelana ne-ion kuthinteka kakhulu ngezinto ezinhle nezimbi zama-electrode, isihlukanisi, kanye ne-electrolyte. Ukuze unciphise i-ion impedance, udinga ukwenza okulandelayo:

Qinisekisa ukuthi izinto ezinhle nezingezinhle kanye ne-electrolyte zinokumanzisa okuhle

Kudingekile ukukhetha ukuminyana okufanelekile lapho uklama ucezu lwesigxobo. Uma ukuminyana kwe-compaction kukhulu kakhulu, i-electrolyte akulula ukungena kuyo, okuzokwandisa ukumelana ne-ion. Ngocezu lwesigxobo esingesihle, uma ifilimu ye-SEI eyakhiwe ebusweni bezinto ezisebenzayo ngesikhathi sokushaja kokuqala nokukhishwa kukhulu kakhulu, kuzophinde kwandise ukumelana ne-ion. Ngalesi sikhathi, kuyadingeka ukulungisa inqubo yokwakheka kwebhethri ukuyixazulula.

Umthelela we-electrolyte

I-electrolyte kufanele ibe nokuhlushwa okufanele, i-viscosity kanye ne-conductivity. Uma i-viscosity ye-electrolyte iphezulu kakhulu, ayihambisani nokungena phakathi kwe-electrolyte kanye nezinto ezisebenzayo zama-electrode amahle futhi angalungile. Ngesikhathi esifanayo, i-electrolyte nayo idinga ukuhlushwa okuphansi, ukugxila okuphezulu kakhulu nakho akusizi ukugeleza nokungena kwayo. I-conductivity ye-electrolyte iyisici esibaluleke kakhulu esithinta ukumelana ne-ion, okunquma ukufuduka kwama-ion.

Umthelela we-diaphragm ekumelaneni ne-ion

The main influencing factors of the diaphragm on the ion resistance are: electrolyte distribution in the diaphragm, diaphragm area, thickness, pore size, porosity, and tortuosity coefficient. For ceramic diaphragms, it is also necessary to prevent ceramic particles from blocking the pores of the diaphragm, which is not conducive to the passage of ions. While ensuring that the electrolyte is fully infiltrated into the diaphragm, there should be no excess electrolyte remaining in it, which reduces the efficiency of the electrolyte.

I-impedance ye-elekthronikhi

Kunezici eziningi ezinomthelela we-impedance ye-elekthronikhi, engathuthukiswa kusuka ezicini ezifana nezinto zokwakha nezinqubo.

Amapuleti Positive futhi negative

The main factors affecting the electronic impedance of the positive and negative plates are: the contact between the active material and the current collector, the factors of the active material itself, and the parameters of the plate. The active material should be in full contact with the current collector surface, which can be considered from the current collector copper foil, aluminum foil base material, and the adhesion of the positive and negative electrode pastes. The porosity of the living material itself, the by-products on the surface of the particles, and the uneven mixing with the conductive agent, etc., will cause the electronic impedance to change. Polar plate parameters such as the density of living matter is too small, the gap between the particles is too large, which is not conducive to electron conduction.

I-Diaphragm

Izinto eziyinhloko ezithinta i-electronic impedance ye-diaphragm yilezi: ukushuba kwe-diaphragm, i-porosity, kanye nemikhiqizo ekukhokhiseni nasekukhipheni inqubo. Okubili kokuqala kulula ukukuqonda. Ngemva kokuba ibhethri selihlakaziwe, ungqimba oluqinile lwento ensundu luvame ukutholakala kusihlukanisi, okuhlanganisa i-electrode eyi-graphite negative kanye nemikhiqizo yayo esabelayo, ezovimba izimbotshana ze-diaphragm futhi yehlise impilo yesevisi yebhethri.

I-substrate yokuqoqa yamanje

Impahla, ukujiya, ububanzi bomqoqi wamanje kanye nezinga lokuxhumana namathebhu konke kuthinta i-impedance kagesi. Umqoqi wamanje udinga ukukhetha i-substrate engazange i-oxidized futhi idluliswe, ngaphandle kwalokho izothinta i-impedance. Ukushisela okungalungile phakathi kwe-copper ne-aluminium foil namathebhu kuzophinde kuthinte i-electronic impedance.

Ukuphikiswa kokuxhumana

Ukumelana nokuxhumana kwakhiwa phakathi kokuxhumana phakathi kwe-foil yethusi ne-aluminium kanye nezinto ezisebenzayo, futhi ukunakwa kufanele kukhokhwe ekunamatheleni kwe-electrode pastes enhle nebi.

Ukumelana ne-polarized kwangaphakathi

Lapho i-current idlula kuma-electrode, isenzakalo sokuthi amandla e-electrode aphambuke emandleni e-electrode equilibrium ibizwa ngokuthi i-electrode polarization. I-polarization ihlanganisa i-ohmic polarization, i-electrochemical polarization kanye ne-concentration polarization. Ukumelana ne-polarization kubhekisela ekuphikiseni kwangaphakathi okubangelwa ukuhlukaniswa kwe-electrode eqondile kanye ne-electrode engalungile yebhethri ngesikhathi sokusabela kwe-electrochemical. Ingabonisa ukuvumelana kwangaphakathi kwebhethri, kodwa ayifanele ukukhiqizwa ngenxa yethonya lokusebenza nendlela. Ukumelana ne-polarization kwangaphakathi akuhlali njalo, futhi kushintsha ngokuhamba kwesikhathi phakathi nenqubo yokushaja nokukhipha. Lokhu kungenxa yokuthi ukwakheka kwezinto ezisebenzayo, ukugxila kanye nokushisa kwe-electrolyte kushintsha njalo. Ukumelana kwangaphakathi kwe-ohmic kuthobela umthetho we-Ohm, futhi ukumelana kwangaphakathi kwe-polarization kuyanda ngokukhula kokuminyana kwamanje, kodwa akubona ubudlelwano bomugqa. Ivamise ukukhuphuka ngokomugqa njengoba i-logarithm yokuminyana kwamanje ikhula.

Ithonya lokuklama kwesakhiwo

Ekwakhiweni kwesakhiwo sebhethri, ngaphezu kwe-riveting kanye ne-welding yesakhiwo sebhethri ngokwayo, inombolo, usayizi, nendawo yamathebhu webhethri kuthinta ngqo ukumelana kwangaphakathi kwebhethri. Ngokwezinga elithile, ukwandisa inani lamathebhu kunganciphisa ngempumelelo ukumelana kwangaphakathi kwebhethri. Ukuma kwamathebhu nakho kuthinta ukumelana kwangaphakathi kwebhethri. Ukumelana kwangaphakathi kwebhethri yesilonda nendawo yethebhu ekhanda lezingcezu zezigxobo eziphozithivu nezinegethivu zinkulu kakhulu. Uma kuqhathaniswa nebhethri yesilonda, ibhethri elakhiwe nge-laminated lilingana nenqwaba yamabhethri amancane ngokuhambisana. , Ukumelana kwayo kwangaphakathi kuncane.

Umthelela wokusebenza kwempahla eluhlaza

Positive and negative active materials

Kumabhethri e-lithium, i-electrode esebenzayo iyingxenye yokugcina i-lithium, enquma kakhulu ukusebenza kwebhethri ye-lithium. Izinto ezinhle ze-electrode ikakhulukazi zithuthukisa ukuguquguquka kwe-elekthronikhi phakathi kwezinhlayiya ngokusebenzisa i-coating kanye ne-doping. Isibonelo, ukusebenzisa i-doping nge-Ni kuthuthukisa amandla ebhondi ye-PO, kuzinzisa ukwakheka kwe-LiFePO4/C, kukhulisa ivolumu yeseli, futhi kunganciphisa ngempumelelo ukumelana nokushajwa kokushaja kwento esebenzayo ye-electrode. Ukwanda okuphawulekayo kokuvula i-polarization, ikakhulukazi i-polarization yokwenza kusebenze i-electrode engalungile, isizathu esiyinhloko se-polarization enkulu. Ukunciphisa usayizi wezinhlayiyana ze-electrode engalungile kunganciphisa ngempumelelo i-polarization esebenzayo ye-electrode engalungile. Lapho usayizi wezinhlayiyana zesigaba esiqinile se-electrode engalungile incishiswa ngesigamu, i-polarization esebenzayo ingancishiswa ngo-45%. Ngakho-ke, mayelana nokwakheka kwebhethri, ucwaningo mayelana nokwenza ngcono kwezinto ezibonakalayo nezingezinhle ngokwazo nalo lubalulekile.

I-ejenti eqhubayo

I-graphite ne-carbon black isetshenziswa kabanzi emkhakheni wamabhethri e-lithium ngenxa yezindawo zabo ezinhle. Uma kuqhathaniswa ne-graphite-based conductive agent, i-electrode enhle ene-carbon black-based conductive agent inokusebenza okungcono kwebhethri, ngoba i-graphite-based conductive agent ine-flaky particle morphology, ebangela ukwanda okukhulu kwe-pore tortuosity ngenani elikhulu, futhi I-Li liquid phase diffusion kulula ukwenzeka Isimanga sokuthi inqubo ikhawulela umthamo wokukhipha. Ibhethri ene-CNTs engeziwe inokumelana okuphansi kwangaphakathi, ngoba uma kuqhathaniswa nokuxhumana kwephuzu phakathi kwe-graphite/carbon black kanye nezinto ezisebenzayo, ama-fibrous carbon nanotubes axhumene nomugqa wezinto ezisebenzayo, ezinganciphisa i-impedance ye-interface yebhethri.

Umqoqi wamanje

Ukunciphisa ukumelana nesixhumi esibonakalayo phakathi komqoqi wamanje kanye nezinto ezisebenzayo kanye nokuthuthukisa amandla okubopha phakathi kokubili kuyizindlela ezibalulekile zokuthuthukisa ukusebenza kwamabhethri e-lithium. Ukumboza i-conductive carbon coating ebusweni be-aluminium foil kanye nokwelashwa kwe-corona kucwecwe le-aluminium kunganciphisa ngempumelelo ukungasebenzi kahle kwebhethri. Uma kuqhathaniswa nocwecwe oluvamile lwe-aluminium, ukusetshenziswa kwe-aluminium ucwecwe lwe-carbon-coated kunganciphisa ukumelana kwangaphakathi kwebhethri cishe ngama-65%, futhi kunganciphisa ukwanda kokumelana kwangaphakathi kwebhethri ngesikhathi sokusetshenziswa. Ukumelana kwangaphakathi kwe-AC kwecwecwe le-aluminium elakhiwe nge-corona kungancishiswa cishe ngama-20%. Kububanzi obusetshenziswa kakhulu be-SOC obungu-20% ~ 90%, ukuphikiswa kwangaphakathi kwe-DC kukonke kuncane uma kuqhathaniswa futhi ukwanda kuba kuncane kancane njengoba ukujula kokukhishwa kukhuphuka.

I-Diaphragm

The ion conduction inside the battery depends on the diffusion of Li ions in the electrolyte through the porous diaphragm. The liquid absorption and wetting ability of the diaphragm is the key to forming a good ion flow channel. When the diaphragm has a higher liquid absorption rate and porous structure, it can be improved. Conductivity reduces battery impedance and improves battery rate performance. Compared with ordinary base membranes, ceramic diaphragms and rubber-coated diaphragms can not only greatly improve the high temperature shrinkage resistance of the diaphragm, but also enhance the liquid absorption and wetting ability of the diaphragm. The addition of SiO2 ceramic coating on the PP diaphragm can make the diaphragm absorb liquid The volume increased by 17%. Coating 1μm PVDF-HFP on the PP/PE composite diaphragm, the liquid absorption rate of the diaphragm is increased from 70% to 82%, and the internal resistance of the cell is reduced by more than 20%.

Kusukela ezicini zenqubo yokukhiqiza nezimo zokusebenzisa, izinto ezithinta ukumelana kwangaphakathi kwebhethri zifaka phakathi:

Izici zenqubo ziyathinta

Ukudonsa

Ukufana kokuhlakazeka kwe-slurry ngesikhathi sokuxuba kuthinta ukuthi i-agent conductive ingahlakazwa ngokufanayo ezintweni ezisebenzayo ngokuxhumana okuseduze nayo, okuhlobene nokumelana kwangaphakathi kwebhethri. Ngokwandisa ukuhlakazeka kwesivinini esikhulu, ukufana kokuhlakazeka kwe-slurry kungathuthukiswa, futhi ukumelana kwangaphakathi kwebhethri kuzoba kuncane. Ngokungeza i-surfactant, ukufana kokusatshalaliswa kwe-ejenti yokuqhuba ku-electrode kungathuthukiswa, futhi i-electrochemical polarization ingancishiswa futhi i-voltage yokukhipha emaphakathi ingakhuphuka.

esinemthombo

Ukuminyana kwendawo kungenye yezinhlaka ezibalulekile zokwakheka kwebhethri. Uma umthamo webhethri ungaguquki, ukukhulisa ukuminyana kwendawo yezingcezu zezigxobo kuzonciphisa ngokungenakugwenywa ubude obuphelele bomqoqi wamanje kanye ne-diaphragm, futhi ukumelana ne-ohmic kwebhethri kuzokwehla ngokufanele. Ngakho-ke, phakathi kwebanga elithile, Ukumelana kwangaphakathi kwebhethri kuncipha njengoba ukuminyana kwendawo kuyanda. Ukufuduka nokuhlukaniswa kwama-athomu e-solvent ngesikhathi sokumboza nokomiswa kuhlobene eduze nezinga lokushisa kuhhavini, okuthinta ngokuqondile ukusatshalaliswa kwe-binder kanye ne-agent conductive esiqeshini se-pole, bese kuthinta ukwakheka kwegridi ye-conductive ngaphakathi kwesiqephu sesigxobo. Ngakho-ke, inqubo yokumboza nokomisa Izinga lokushisa libuye libe yinqubo ebalulekile yokuthuthukisa ukusebenza kwebhethri.

I-Rolling

Ngokwezinga elithile, ukumelana kwangaphakathi kwebhethri kuncipha njengoba ukuminyana kokuhlangana kukhula. Ngenxa yokuthi ukuminyana kwe-compaction kuyanda, ibanga phakathi kwezinhlayiya zezinto ezingavuthiwe liyancipha. Ukuxhumana okwengeziwe phakathi kwezinhlayiya, amabhuloho namashaneli ahamba phambili, kanye nebhethri I-impedance iyancipha. Ukulawula ukuminyana kwe-compaction kutholakala ikakhulukazi ngokujiya kokugoqa. Ugqinsi oluhlukene olugingqayo lunomthelela omkhulu ekuqineni kwangaphakathi kwebhethri. Uma ubukhulu bokugoqa bukhulu, ukumelana nokuxhumana phakathi kwezinto ezisebenzayo kanye nomqoqi wamanje kuyanda ngenxa yokwehluleka kwezinto ezisebenzayo okufanele zigoqwe ngokuqinile, futhi ukumelana kwangaphakathi kwebhethri kuyanda. Ngemva kokuba ibhethri selijikelezisiwe, ukuqhekeka kukhiqizwa endaweni ye-electrode ephozithivu yebhethri enogqinsi olujiyile uma kuqhathaniswa, okuzoqhubeza nokwandisa ukumelana nokuxhumana phakathi kwento esebenzayo engaphezulu yesiqephu sesigxobo kanye nesiqoqi samanje.

Isikhathi sokushintsha isiqephu se-Pole

Isikhathi seshelufu esihlukile se-electrode eqondile sinomthelela omkhulu ekuphikiseni kwangaphakathi kwebhethri. Lapho isikhathi seshalofu sisifushane, ukumelana kwangaphakathi kwebhethri kuzokhula kancane ngenxa yomphumela we-carbon coating layer ebusweni be-lithium iron phosphate kanye ne-lithium iron phosphate; Uma ibhethri ishiywe isikhathi eside (ngaphezu kwe-23h), ukumelana kwangaphakathi kwebhethri kukhula kakhulu ngenxa yomphumela ohlangene wokusabela kwe-lithium iron phosphate ngamanzi kanye nokunamathela kokunamathela. Ngakho-ke, kuyadingeka ukulawula ngokuqinile isikhathi sokuguqula izingcezu zezigxobo ekukhiqizeni kwangempela.

Umjovo owuketshezi

I-ionic conductivity ye-electrolyte inquma ukumelana kwangaphakathi nezici zesilinganiso sebhethri. I-conductivity ye-electrolyte ihambisana ngokuphambene ne-viscosity ye-solvent, futhi iphinde ithinteke ngokugxila kwe-lithium usawoti kanye nobukhulu be-anions. Ngokungeziwe ocwaningweni lokuthuthukisa mayelana ne-conductivity, umthamo womjovo kanye nesikhathi sokungena ngemva komjovo nakho kuthinta ngqo ukumelana kwangaphakathi kwebhethri. Ivolumu yomjovo omncane noma isikhathi esinganele sokungena sizobangela ukumelana kwangaphakathi kwebhethri kube kukhulu kakhulu, ngaleyo ndlela kuphazamise ibhethri Umthamo wokudlala.

Umthelela wemibandela yokusebenzisa

lokushisa

Ithonya lokushisa ekuphikiseni kwangaphakathi liyabonakala. Uma izinga lokushisa liphansi, kuyahamba kancane ukudluliswa kwe-ion ngaphakathi kwebhethri futhi kukhulu ukumelana nebhethri kwangaphakathi. I-impedance yebhethri ingahlukaniswa ibe yi-impedance yenqwaba, impedance ye-SEI membrane, ne-impedance yokudlulisa ukushaja. I-impedance eyinqwaba kanye ne-SEI membrane impedance ithintwa kakhulu yi-electrolyte ionic conductivity, futhi umkhuba wokushintsha ezingeni lokushisa eliphansi uhambisana nokushintsha komkhuba we-electrolyte conductivity. Uma kuqhathaniswa nokwenyuka kwe-impedance ngobuningi kanye nokumelana nefilimu ye-SEI emazingeni okushisa aphansi, i-impedance yokusabela kweshaji ikhuphuka kakhulu ngokuncipha kwezinga lokushisa. Ngaphansi kokungu-20°C, i-impedance yokushajwa ithatha cishe u-100% wokumelana nengqikithi yangaphakathi yebhethri.

SOC

Uma ibhethri liku-SOC ehlukile, ukumelana kwayo kwangaphakathi nakho kuhlukile, ikakhulukazi ukumelana kwangaphakathi kwe-DC kuthinta ngokuqondile ukusebenza kwamandla ebhethri, bese kukhombisa ukusebenza kwebhethri esimweni sangempela: ukumelana kwangaphakathi kwe-DC kwebhethri ye-lithium kuyahlukahluka ukujula kokukhishwa kwe-DOD yebhethri Ukumelana kwangaphakathi akushintshanga ngokuyisisekelo esikhathini sokukhipha esingu-10% ~ 80%. Ngokuvamile, ukumelana kwangaphakathi kukhula kakhulu ekujuleni kokukhishwa okujulile.

isitoreji

Njengoba isikhathi sokugcina samabhethri e-lithium-ion sikhula, amabhethri aqhubeka eguga, futhi ukumelana kwawo kwangaphakathi kuyaqhubeka kwanda. Izinhlobo ezahlukene zamabhethri e-lithium zinamazinga ahlukene okushintsha ukumelana kwangaphakathi. Ngemuva kwesikhathi eside sokugcina izinyanga ezingu-9-10, izinga lokwanda kokumelana kwangaphakathi kwamabhethri e-LFP liphakeme kunalelo lamabhethri e-NCA ne-NCM. Izinga lokukhula lokumelana kwangaphakathi lihlobene nesikhathi sokugcina, izinga lokushisa lokugcina kanye ne-SOC yokugcina

umjikelezo

Kungakhathaliseki ukuthi isitoreji noma ukuhamba ngebhayisikili, izinga lokushisa linomthelela ofanayo ekuphikisweni kwangaphakathi kwebhethri. Ukuphakama kwezinga lokushisa lomjikelezo, likhulu izinga lokukhula lokumelana kwangaphakathi. Izikhawu zomjikelezo ezihlukene zinemithelela ehlukile ekuphikiseni kwangaphakathi kwebhethri. Ukumelana kwangaphakathi kwebhethri kuyanda ngokukhula kokujula kweshaja nokukhishwa, futhi ukwanda kokumelana kwangaphakathi kuhambisana nokwanda kokujula kokushaja nokukhipha. Ngokungeziwe kumthelela wokujula kokushaja nokuphuma emjikelezweni, amandla kagesi anqanyuliwe nawo anomthelela: umkhawulo ophansi kakhulu noma ophakeme kakhulu ongaphezulu wevoltheji yokushaja uzokhuphula isixhumi esibonakalayo se-electrode, futhi ifilimu ye-passivation ayikwazi ukwakhiwa kahle ngaphansi kwe-voltage yomkhawulo ophansi kakhulu, futhi Ukuphakama okuphezulu komkhawulo we-voltage kuzobangela ukuthi i-electrolyte i-oxidize futhi ibole ebusweni be-electrode ye-LiFePO4 ukuze yakhe imikhiqizo ene-conductivity kagesi ephansi.

nezinye

Amabhethri e-lithium afakwe emotweni nakanjani azobhekana nezimo ezingezinhle zomgwaqo ekusebenziseni okungokoqobo, kodwa ucwaningo luye lwathola ukuthi indawo yokudlidliza yebhethri ye-lithium cishe ayinawo umthelela ekuphikisweni kwangaphakathi kwebhethri le-lithium phakathi nenqubo yokufaka isicelo.

Outlook

Ukumelana kwangaphakathi kuyipharamitha ebalulekile yokulinganisa ukusebenza kwamandla e-lithium-ion nokuhlola impilo yebhethri. Uma kukhulu ukumelana kwangaphakathi, kuba kubi kakhulu ukusebenza kwezinga lebhethri, futhi kukhula ngokushesha ngesikhathi sokugcina nokugaywa kabusha. Ukumelana kwangaphakathi kuhlobene nesakhiwo sebhethri, izici zempahla yebhethri nenqubo yokukhiqiza, kanye nezinguquko ngokushintsha kwezinga lokushisa elizungezile nesimo sokushaja. Ngakho-ke, ukuthuthukiswa kwamabhethri aphansi ukumelana nangaphakathi kuyisihluthulelo sokuthuthukisa ukusebenza kwamandla ebhethri, futhi ngesikhathi esifanayo, ukuba yinkosi yemithetho eshintshayo yokumelana nebhethri kwangaphakathi kunokubaluleka okungokoqobo okubaluleke kakhulu kokubikezela impilo yebhethri.