Pratique du Shadowing: Step-by-step Demonstration: High-Voltage Battery Repair - Apprendre l'anglais à l'oral avec la vidéo
Création de la leçon...
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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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Vocabulaire et conseils d’expression pour cette leçon
Cette vidéo contient 57 phrases et 852 mots à répéter en shadowing. La partie parlée dure 8:46. Le locuteur parle lentement, environ 97 mots par minute, ce qui laisse le temps d’imiter chaque son. Seuls 77 % des mots font partie des 3 000 mots les plus courants en anglais, le vocabulaire est donc exigeant.
Vocabulaire clé de cette vidéo
15 mots de la vidéo à retenir, avec leur prononciation et leur sens :
| Mot | Prononciation | Sens |
|---|---|---|
| voltage nom | /ˈvəʊltɪd͡ʒ/ | tension, voltage |
| replacement nom | /ɹɪˈpleɪsmənt/ | remplaçant, substitut |
| glove nom | /ɡlʌv/ | gant |
| technician nom | /tɛkˈnɪʃən/ | technicien, technicienne |
| repair verbe | /ˈɹiːpɛɚ/ | réparer |
| precision nom | /pɹɪˈsɪʒ.ən/ | précision |
| module nom | /ˈmɑd͡ʒul/ | module |
| hose nom | /hoʊz/ | tuyau |
| component nom | /kəmˈpoʊ.nənt/ | composant |
| bolt nom | /boʊlt/ | boulon, vis |
| automobile nom | /ˈɔː.tə.məˌbil/ | voiture, auto |
| connect verbe | /kəˈnɛkt/ | accoupler, connecter |
| vessel nom | /ˈvɛsəl/ | vaisseau |
| beneath | /bɪˈniːθ/ | sous |
| diagnosis nom | /daɪəɡˈnəʊsɪs/ | diagnostic, diagnose |
Les verbes à particule que vous entendrez
| Mot | Sens |
|---|---|
| come down verbe | descendre, tomber |
La grammaire de cette vidéo
Les structures que le locuteur utilise le plus, avec les mots exacts de la vidéo :
| Structure | Dans la vidéo |
|---|---|
| Voix passive be + participe passé — l’accent est mis sur ce qui arrive, pas sur qui le fait | was towed · be replaced · is removed |
| Present perfect have/has + participe passé — une action passée qui compte encore maintenant | has brought · has been isolated · have passed |
Prononciation à surveiller
- Les sons « sh » et « zh »: technician /tɛkˈnɪʃən/, precision /pɹɪˈsɪʒ.ən/, suspension /səˈspɛnʃən/, dealership /ˈdiːləʃɪp/, malfunction /ˌmælˈfʌŋk.ʃən/
- Mots longs — placez bien l’accent: automobile /ˈɔː.tə.məˌbil/, electrical /ɪˈlɛktɹɪkəl/, considerable /kənˈsɪdəɹəbl̩/, availability /əˌveɪ.ləˈbɪl.ɪ.ti/, accessory /əkˈsɛs.(ə.)ɹi/
Comment s’entraîner avec cette vidéo
- Écoutez la vidéo en entier une fois sans parler et notez les mots que vous ne connaissez pas.
- Répétez phrase par phrase à vitesse normale, en reprenant chacune jusqu’à ce que votre rythme corresponde à celui du locuteur.
- Enregistrez-vous et comparez avec l’original, en faisant attention à des mots comme voltage, replacement, glove.
Qu'est-ce que la technique du Shadowing ?
Le Shadowing est une technique d'apprentissage des langues fondée sur la science, développée à l'origine pour la formation des interprètes professionnels. Le principe est simple mais puissant : vous écoutez de l'anglais natif et le répétez immédiatement à voix haute — comme une ombre suivant le locuteur avec un décalage de 1 à 2 secondes. Les recherches montrent une amélioration significative de la précision de la prononciation, de l'intonation, du rythme, des liaisons, de la compréhension orale et de la fluidité.