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Check Housing Of Lithium-Ion Battery - AR47.70-P-0017-02A

Model All (4xWD, CAR, smart) 

DANGER Risk of fire  /risk of explosion due to short circuit and escaping oxyhydrogen gas. Risk of (burn) injury caused by caustic burns to eyes, skin and mucous membranes from battery electrolyte/mist, short circuit and arcing. Risk of poisoning  caused by swallowing battery electrolyte or absorption of lead through the skin or body orifices. Risk of death  due to voltage U >= 30 V AC and U >= 60 V DC. No fires, sparks, open flames, or smoking. Wear acid-resistant gloves, clothing, and glasses. Pour battery acid only into suitable and appropriately marked containers. AS54.10-Z-0001-01A
DANGER Risk of death  when working on component parts and systems with U >= 30 V alternating voltage (AC) or U >= 60 V direct voltage (DC) Do not touch damaged or defective live component parts and lines or non-insulated electrical connections and lines. AS00.00-Z-0035-01A
Notice  General information on vehicles with high-voltage on-board electrical system and/or lithium-ion battery and/or gaseous-fuel drive system as well as personal protective equipment   AH00.00-Z-0300-01A
Notice  Notes on battery   AH54.10-P-0001-01A
  Notes on safety-relevant components   AH00.00-Z-0019-01A

Mechanical protective cover/housing damaged: B1a/b cracks or openings can be recognized on the housing 

  1. Check lithium-ion battery for cracks and/or openings (arrows), e. g. caused by the breaking off of housing parts.

    If cracks or openings are detected, there is a danger of possible internal damage or possible ingress of foreign objects or fluids, which can lead to damage or short circuits in the lithium-ion battery,

    ↓

    Immediately make an emergency call under the respective location-specific and country-specific emergency call number and do not touch the high-voltage battery; vacate the danger zone.

    G16553929Courtesy of MERCEDES-BENZ USA

    Mechanical protective cover/housing damaged: B2a/b critical dent depths/deformation of the housing exceeded 

  2. Check the housing of the lithium-ion battery incl. threaded connections, attaching parts, and, if applicable, attaching parts that are attached firmly to the housing for mechanical deformation.

    IMPORTANT If any dents or deformations are detected, there is a potential danger of internal damage, which can lead to damage or short circuits in the lithium-ion battery.

    If there is a problem,

    ↓

    Perform operation steps  3 to  5.

  3. Determine height of straightedge, scale ruler or contact angle as a point of origin at the non-deformed housing contour (arrow c).

    IMPORTANTCommercially available devices/tools 

    Vernier caliper with a round measuring blade with a diameter of 1.5 mm

    Straightedge, ruler, or a contact angle

    IMPORTANT For measuring the dent depths, it is important to measure the dent depths against a reference line (original, not deformed, housing contour) using suitable aids e.g. a straightedge, a ruler, or a contact angle.

    G16553930Courtesy of MERCEDES-BENZ USA
  4. Check whether a dent depth (d) of 2 mm is exceeded.

    If vehicles without a EB300, EB301, EB311, EB312, EB330, EB40x or EB42x high-voltage battery are tested.

    IMPORTANT Dent depth (d) ≤ 2 mm: Transport approval Dent depth (d) > 2 mm: No transport approval

    If the maximum dent depth (d) prevents transport approval,

    ↓

    contact the responsible MPC/general representative.

    G16553931Courtesy of MERCEDES-BENZ USA
  5. Check whether the dent depth (d) exceeds the permissible limits in areas (A, B, C, D).

    If vehicles with a EB300 or EB301 high-voltage battery are tested.

    If the maximum dent depth (d) prevents transport approval,

    ↓

    contact the responsible MPC/general representative.

    G16553932Courtesy of MERCEDES-BENZ USA

    Permissible dent depths (d) for vehicles with EB300 or EB301 high-voltage battery 

    1. Evaluation according to B1, B3 and B4
    2. ≤ 2 mm
    3. ≤ 5 mm
    4. ≤ 10 mm

    IMPORTANT If the permissible dent depth (d) in one area (A, B, C, D) is exceeded, no transport approval is granted.

    G16553933Courtesy of MERCEDES-BENZ USA
  6. Check whether dent depth (d) exceeds permissible limit values in areas (A, B, C, D, E).

    If vehicles with EB311, EB312, EB40x or EB42x high-voltage battery will be checked.

    If the maximum dent depth (d) prevents transport approval,

    ↓

    contact the responsible MPC/general representative.

    G16553934Courtesy of MERCEDES-BENZ USA

    Permissible dent depth (d) for vehicles with EB311, EB312 high-voltage battery 

    1. ≤ 2 mm
    2. ≤ 2 mm
    3. ≤ 10 mm
    4. Evaluation according to B1, B3 and B4
    5. ≤ 3 mm

    IMPORTANT If permissible dent depth (d) in one area (A, B, C, D, E) is exceeded, transport approval is not granted.

    G16553935Courtesy of MERCEDES-BENZ USA

    Permissible dent depths (d) for vehicles with EB40x or EB42x high-voltage battery 

    1. Evaluation according to B1, B3 and B4
    2. ≤ 50 mm
    3. ≤ 2 mm
    4. ≤ 5 mm
    5. ≤ 10 mm

    IMPORTANT If permissible dent depth (d) in one area (A, B, C, D, E) is exceeded, transport approval is not granted.

    G16553936Courtesy of MERCEDES-BENZ USA
  7. Check whether dent depth (d) exceeds permissible limit values in areas (A, B).

    If vehicles with EB330 high-voltage battery are tested.

    If the maximum dent depth (d) prevents transport approval,

    ↓

    contact the responsible MPC/general representative.

    G16553937Courtesy of MERCEDES-BENZ USA

    Permissible dent depths (d) for vehicles with EB330 high-voltage battery 

    1. ≤ 2 mm
    2. ≤ 5 mm

    IMPORTANT If permissible dent depth (d) in an area (A, B) is exceeded, transport approval is not granted.

    G16553938Courtesy of MERCEDES-BENZ USA

    Mechanical protective cover/housing damaged: B3 all dents/deformations must be recorded with the measured dent depths in the table 

  8. Record all dents/deformations with location, type, and dent depths.

    IMPORTANT Enter the lengths, widths, and depths of the dent depths. Record location of the dents/deformations in the drawing in the "analysis sheet for the transportability of high-voltage batteries form."

    G16553939Courtesy of MERCEDES-BENZ USA

    Mechanical protective cover/housing damaged: B4 Electrical connector and its surroundings damaged 

  9. Check electrical contacts (plug, bushes, bolts, posts etc.) and check connections of the lithium-ion battery for damage (arrows).
    1. If an electrical contact (plugs, bushes, bolts, posts etc.) of the lithium-ion battery is damaged.

      Contact the responsible MPC/general representative and determine further safety precautions so that touching live parts is safely prevented.

    2. If no electrical contact (plugs, bushes, bolts, posts etc.) of the lithium-ion battery is damaged.

      Cover contacts (plugs, bushes, bolts, posts etc.) with battery-specific cover caps so that touching is ruled out and ingress of objects and fluids is safely prevented.

      G16553940Courtesy of MERCEDES-BENZ USA

      Mechanical protective cover/housing damaged: B5 pressure relief device triggered/open/damaged 

  11. Check pressure relief device for integrity.

    If the pressure relief device is triggered or if the pressure relief device is open,

    ↓

    Check lithium-ion battery for electrolyte leakage.

    Check lithium-ion battery for electrolyte leakage 

  12. Check lithium-ion battery for pungent odor caused by leaking electrolyte.

    IMPORTANT Avoid direct skin contact with electrolyte that may have leaked. Electrolyte is volatile and has a pungent odor.

  13. Wear personal protective equipment (PPE) or location/country-specific protective clothing when working with electrolyte.

    If a pungent odor is noticeable.

    IMPORTANT Personal protective equipment for working with electrolyte consists of the following parts: Protective gloves (standard EN 60903.2012 class 0 (designation A (acid), A+H (acid + oil), or R (acid + oil + ozone))).

    Tightly fitting safety glasses, goggles, or face protection shield. Long-sleeved protective clothing. Respiratory protection - depending on the amount of electrolyte released and the intensity of the release.

    G16553941Courtesy of MERCEDES-BENZ USA
  14. Inspect housing of the lithium-ion battery for signs of electrolyte leakage.

    IMPORTANT Avoid direct skin contact with electrolyte that may have leaked.

    IMPORTANT Electrolyte may have different colors depending on the reaction (from light/clear to dark/opaque). If the cell only has mechanical damage, the electrolyte is clear.

    If there is an electrolyte leakage:

    ↓

    Evacuate danger zone and keep a safe distance.

    Ensure that working area is well ventilated.

    Wait for possible reaction of electrolyte (at least 20 min).

    Bind escaped electrolyte with an absorber (vermiculite) and transfer to containers designated for disposal.

    Clean component parts with shop towel and transfer shop towels to containers designated for disposal.

    If the prerequisites for removal are not met in the event of electrolyte leakage, make an emergency call to the respective location-specific and country-specific emergency call number immediately; do not touch high-voltage battery and vacate danger zone.

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