Tutorial: Physics Topic: Accumulator Prepared by: RNDr. Ondřej Jeřábek Projekt Anglicky v odborných předmětech, CZ.1.07/1.3.09/04.0002 je spolufinancován.

Prezentace na téma: "Tutorial: Physics Topic: Accumulator Prepared by: RNDr. Ondřej Jeřábek Projekt Anglicky v odborných předmětech, CZ.1.07/1.3.09/04.0002 je spolufinancován."— Transkript prezentace:

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2 Tutorial: Physics Topic: Accumulator Prepared by: RNDr. Ondřej Jeřábek Projekt Anglicky v odborných předmětech, CZ.1.07/1.3.09/04.0002 je spolufinancován Evropským sociálním fondem a státním rozpočtem České republiky.

3 Accumulator

4 General information:  Accumulator is a reservoir of electrical energy  Energy is supplied by car charging system or another power source outside car  Main structural components are positive and negative accumulator plates  Individual accumulator plates of opposite polarity are isolated by separators  Positive and negative accumulator set of plates makes cell with nominal voltage 2V

5  Accumulator is very sensitive to maintenance  The result of bad maintenance is capacity decrease and shorter service life  Accumulator suffers mainly from impurities, small amount of electrolyte and inactivity  Accumulator discharges in inactivity, it results in plates´ sulphatization. Accumulator can freeze in winter and it can be damaged or destroyed because of decrease of electrolyte density.

6  Starting accumulators – main purpose is to supply large amount of energy for engine start  Deep-cycle accumulators – used for long time supply of exact electric energy amount  HD accumulators (heavy duty) – for high electric energy consumption and for difficult working conditions e.g. vibrations  Station accumulators – used to power supply of electrical appliances in temporary mode

7  Accumulator vessel– Hard rubber  Accumulator cover – it is covered by asphalt at rubber vessels, it is stuck to plastic vessel  Separators – separate electrodes – made of impregnated paper  Electrodes – made of lead alloys, calcium and silver. They are resistant to deep discharge and they have large amount of starting current.  Electrolyte – probably 36% aqueous solution of sulphuric acid

8  Water evaporates gradually of cells  When cell electrolyte level decreases, it is fulfilled by distillate water to specified level  Accumulator surface can not be painted by oil or fat, it can not be cleaned by petrol or paraffin because these liquids dissolve poured materials  Pole connectors are cleaned but they are not canned.

9  Accumulator which is used to charging must be kept clean  Plugs are unscrewed before charging to let produced gas leave by charging leave. Electrolyte is refilled to cells with distillate water to specified level.  For example, normal charge current is 8,4 A for discharged accumulator 84 Ah and complete charging takes approximately 18 hours  It is charged to final signs of charging

10  Find out accumulator on the internet: a) With voltage 6V and 12V b) With capacity 60 A.h

11  Describe main accumulator components which you found on the Internet

12  JAN, Zdeněk; ŽDÁNSKÝ, Bronislav ; ČUPERA, Jiří. Automobily 1. Brno : Avid, 2004. 211 s.  JAN, Zdeněk; ŽDÁNSKÝ, Bronislav ; ČUPERA, Jiří. Automobily 2. Brno : Avid, 2004. 120 s.  JAN, Zdeněk; ŽDÁNSKÝ, Bronislav ; ČUPERA, Jiří. Automobily 3. Brno : Avid, 2004. 220 s.  JAN, Zdeněk; ŽDÁNSKÝ, Bronislav ; ČUPERA, Jiří. Automobily 4. Brno : Avid, 2004. 350 s. Translation:  www.seznam.cz www.seznam.cz  www.slovnik.cz www.slovnik.cz  JANATA, Petr. Handy slovník technický anglicko-český a česko-anglický. Plzeň: Nakladatelství Fraus, 2000. ISBN 80-7238-075-3  Lingea LEXIKON 5, Technický slovník anglicko-český a česko-anglický. 2010.