Shadowing Practice: Step-by-step Demonstration: High-Voltage Battery Repair - Learn English Speaking with Video
Les maken...
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We're here at Precision Auto Service in Langley, BC, where a customer has brought in a 2016 Fiat 500E for repair.
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The car was towed all the way from Vernon, BC, over 400 kilometers away from the shop.
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The customer reported that the car would not go into ready mode.
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The dealership had told the customer
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that the entire battery pack would have to be replaced at a cost of around $20 ,000, and that was if a replacement could be found.
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Precision Auto's diagnosis revealed a fault within the battery pack control module.
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Replacement BPCMs are not readily available either, but Precision Auto is well connected and was able to source one from a company in Europe.
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After the replacement module arrived, it was time to perform the repair.
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The first step is to disconnect the 12 volt battery.
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Yes, most EVs have a 12 volt battery to run accessories like lights, wipers and infotainment systems.
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Next, the high voltage service plug is removed.
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On this model it is located under the rear seat.
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The service plug is like a giant fuse, this one is 350 amps.
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Once removed, the high voltage is isolated to the inside of the battery pack, making it safe to work on the vehicle.
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The battery pack is removed from under the car, so the car is lifted with a hoist.
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On the Fiat, the battery pack extends from just rear of the front wheels almost to the back of the car.
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The rearward part is where the fuel tank would be on a gas -powered car.
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Several metal protective covers are removed.
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This exposes the main high voltage cables, which are colored orange, and the cooling system hoses.
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This battery is liquid cooled.
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Even though the high voltage battery has been isolated, the technician puts on rubber electrical safety gloves before proceeding with the next steps.
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To ensure there are no pinholes, the gloves are tested before each use.
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This is done by rolling up the open ends of the gloves, pressurizing the air inside.
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Then the gloves are held to the cheek to check for air leaks.
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Once the gloves have passed the test, a pair of work over gloves are worn over them.
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Now the technician is ready to disconnect the electrical cables from the battery pack, starting with the main line and then the secondary line.
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He places a catchment vessel on a scissor lift table directly beneath the coolant hoses,
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clamps the hoses, and then loosens the clamps where the hoses connect to the fittings on the battery pack housing.
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The coolant drains into the catchment vessel.
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to prevent further spillage while the battery pack is being removed he places caps on the coolant fittings
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because the battery pack goes over the top of the rear axle the complete rear axle and suspension is removed.
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When the battery pack is removed, it is going to drastically change the weight distribution of the vehicle,
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so the technician secures the front and rear of the vehicle with supports beforehand.
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The technician places the scissor lift table beneath the battery and raises it until it contacts the bottom of the battery case.
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Now the main bolts can be removed
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With all the bolts removed, the table and battery pack are lowered together.
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This vehicle had a considerable amount of mud caked on its underside, so the battery pack cover must be cleaned before it can be opened.
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No debris should be allowed to contaminate the interior of the battery case.
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The technician uses a shop vac and compressed air to remove loose mud and dust.
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Several dozen bolts hold the top and bottom halves of the battery pack case together.
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These are removed.
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The top half of the case can now be lifted off, exposing the components of the battery
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The technician conducts some tests, verifying voltage readings to ensure there are no other problems.
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Satisfied with the results, he disconnects the cables from the connectors on the BPC -M and removes the module.
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He then installs the replacement module.
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The battery pack is now ready to be reinstalled in the vehicle.
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When an electric vehicle's high voltage battery malfunctions, it does not always mean that the entire battery pack must be replaced.
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The most common reason a complete replacement will be recommended is
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because currently there are very few businesses that possess the resources necessary to perform battery pack diagnosis and repair.
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It is much easier to simply swap out the entire battery pack
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that said the price of a replacement battery pack is usually prohibitive
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and in many cases availability is scarce this will change over
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time as with any new consumer product prices will come down as demand
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and production increase this will be true not only for complete battery packs
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but also for the internal components precision auto service is presently one of very few repair facilities
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that have invested in the tools, equipment and training necessary to diagnose and repair high voltage batteries and other EV components.
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This too will change as shops start to see a larger portion of their customer base driving electric vehicles.
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Woordenschat en spreektips bij deze les
Deze video bevat 57 zinnen en 852 woorden om na te spreken. Het gesproken deel duurt 8:46. De spreker praat langzaam, ongeveer 97 woorden per minuut, zodat je tijd hebt om elke klank na te doen. Slechts 77% van de woorden hoort bij de 3.000 meest gebruikte Engelse woorden, dus de woordenschat is pittig.
Belangrijke woorden in deze video
15 woorden uit de video die het leren waard zijn, met uitspraak en betekenis:
| Woord | Uitspraak | Betekenis |
|---|---|---|
| voltage zelfstandig naamwoord | /ˈvəʊltɪd͡ʒ/ | spanning |
| replacement zelfstandig naamwoord | /ɹɪˈpleɪsmənt/ | vervanger, plaatsvervanger |
| glove zelfstandig naamwoord | /ɡlʌv/ | handschoen |
| technician zelfstandig naamwoord | /tɛkˈnɪʃən/ | technicus, technieker |
| repair werkwoord | /ˈɹiːpɛɚ/ | herstellen, repareren |
| precision zelfstandig naamwoord | /pɹɪˈsɪʒ.ən/ | precisie |
| module zelfstandig naamwoord | /ˈmɑd͡ʒul/ | module |
| hose zelfstandig naamwoord | /hoʊz/ | slang |
| component zelfstandig naamwoord | /kəmˈpoʊ.nənt/ | onderdeel, component |
| bolt zelfstandig naamwoord | /boʊlt/ | bout |
| automobile zelfstandig naamwoord | /ˈɔː.tə.məˌbil/ | automobiel, auto |
| connect werkwoord | /kəˈnɛkt/ | verbinden |
| vessel zelfstandig naamwoord | /ˈvɛsəl/ | vaartuig |
| beneath | /bɪˈniːθ/ | onder |
| diagnosis zelfstandig naamwoord | /daɪəɡˈnəʊsɪs/ | diagnose |
Phrasal verbs die je zult horen
| Woord | Betekenis |
|---|---|
| roll up werkwoord | oprollen |
Grammatica in deze video
De structuren die de spreker het meest gebruikt, met de exacte woorden uit de video:
| Structuur | In de video |
|---|---|
| Lijdende vorm be + voltooid deelwoord — het gaat om wat er gebeurt, niet om wie het doet | was towed · be replaced · is removed |
| Present perfect have/has + voltooid deelwoord — iets uit het verleden dat nu nog telt | has brought · has been isolated · have passed |
Uitspraak om op te letten
- De klanken “sh” en “zh”: technician /tɛkˈnɪʃən/, precision /pɹɪˈsɪʒ.ən/, suspension /səˈspɛnʃən/, dealership /ˈdiːləʃɪp/, malfunction /ˌmælˈfʌŋk.ʃən/
- Lange woorden — let op de klemtoon: automobile /ˈɔː.tə.məˌbil/, electrical /ɪˈlɛktɹɪkəl/, considerable /kənˈsɪdəɹəbl̩/, availability /əˌveɪ.ləˈbɪl.ɪ.ti/, accessory /əkˈsɛs.(ə.)ɹi/
Zo oefen je met deze video
- Luister de hele video één keer zonder te spreken en noteer de woorden die je niet kent.
- Spreek zin voor zin na op normale snelheid en herhaal elke zin tot je ritme gelijk is aan dat van de spreker.
- Neem jezelf op en vergelijk met het origineel; let daarbij op woorden als voltage, replacement, glove.
Wat is de Shadowing-techniek?
Shadowing is een wetenschappelijk onderbouwde taalleermethode die oorspronkelijk is ontwikkeld voor professionele tolkentraining en gepopulariseerd door polyglot Dr. Alexander Arguelles. De methode is eenvoudig maar krachtig: je luistert naar native Engelse audio en herhaalt het onmiddellijk hardop — als een schaduw die de spreker volgt met slechts 1–2 seconden vertraging. In tegenstelling tot passief luisteren of grammaticadrills, dwingt shadowing je hersenen en mondspieren om echte spraakpatronen tegelijkertijd te verwerken en te reproduceren. Onderzoek toont aan dat het de uitspraaknauwkeurigheid, intonatie, ritme, verbonden spraak, luisterbegrip en spreekvaardigheid aanzienlijk verbetert — waardoor het een van de meest effectieve methoden is voor IELTS Speaking-voorbereiding en echte Engelse communicatie.