Check housing of lithium-ion battery

AR47.70-S-0017-02F

Check housing of lithium-ion battery

 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

Topical note

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

Topical note

Notes on battery

AH54.10-P-0001-01A

Engine

780.701 in model 447

Engine

780.703 in model 910

1

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

 No cracks and/or openings may be identifiable.
The risk otherwise exists of potential internal damage and/or the possible ingress of foreign bodies or fluids that can result in damage or short circuits in the lithium-ion battery.

If cracks and/or openings are identifiable:



Immediately make an emergency call under the respective location- and country-specific emergency call number, do not touch the lithium-ion battery and exit the danger zone.

2

Check the lithium-ion battery housing incl. the threaded connections, mounting parts as well as - depending on the version - the mounting parts firmly attached to the housing with regard to mechanical deformation.

 No dents and/or deformations may be identifiable.
The risk otherwise exists of potential internal damage that can result in damage or short circuits in the lithium-ion battery.

If dents and/or deformations exist:



Continue work procedure with operation step 3.

If no dents and/or deformations exist:



Continue work procedure with operation step 6.

3

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

 Commercially available devices/tools
Vernier caliper with a round measuring blade with a diameter of 1.5 mm
Straightedge, ruler, or contact angle

 When measuring the dent depths, the dent depth must be measured against a reference line (original, non-deformed housing contour) using suitable aids, e. g. a straightedge, flat ruler or a machinist square.

4

Check whether a dent depth (d) of 2 mm is exceeded.

If dent depth (d)  2 mm:



Lithium-ion battery is transportable.

If dent depth (d) > 2 mm:



No transport approval. Contact the responsible Market Performance Center (MPC)/general distributor.

5

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

 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."

Example illustration

a

Permissible dent depths

b

Impermissible dent depths (exclusion criteria for transport approval)

6

Check electrical contacts (jacks, plugs, bolts, posts etc.) and connections of the lithium-ion battery for damage (arrows).

If an electrical contact (jack, plug, bolt, post etc.) of the lithium-ion battery is damaged:



Contact the responsible MPC/general distributor and specify further protective measures so that contact with live parts is prevented.

If no electrical contact (jack, plug, bolt, post etc.) of the lithium-ion battery is damaged:



Cover contacts (jacks, plugs, bolts, posts etc.) with battery-specific covers so that contact is excluded and the ingress of objects and fluids is reliably prevented.

7

Check pressure relief device for integrity.

If the pressure relief device is triggered and/or in the case of an open pressure relief device:



Check lithium-ion battery for electrolyte leakage.

A

Electrolyte as gelled residual layer

B

Discoloration due to electrolyte on the housing

8

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

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

9

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

If a pungent odor is noticeable.

 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.

10

Check the lithium-ion battery housing for electrolyte leakage.

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

 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.

Absorb escaped electrolyte by means of absorbent granulate (vermiculite) and transfer to containers envisaged for disposal.

Clean component parts with suitable cleaning rages and place cleaning rags in containers envisaged for disposal.

 Ensure that working area is well ventilated.
Wait for possible reaction of electrolyte (at least 20 min).

If the requirements for eliminating the electrolyte leakage are not fulfilled in the case of electrolyte leakage:



Immediately make an emergency call under the respective location- and country-specific emergency call number, do not touch the lithium-ion battery and exit the danger zone.