Lead-acid starter batteries - Part 6: Batteries for Micro-Cycle Applications

This European Standard is applicable to lead-acid batteries with a nominal voltage of 12 V, used primarily as power source for the starting of internal combustion engines (ICE), lighting and also for auxiliary equipment of ICE vehicles. These batteries are commonly called "starter batteries". Batteries with a nominal voltage of 6 V are also included in the scope of this standard. All referenced voltages need to be divided by two for 6 V batteries. The batteries under scope of this standard are used for micro-cycle applications in vehicles which can also be called Start-Stop (or Stop-Start, idling-stop system, micro-hybrid or idle-stop-and-go) applications. In cars with this special capability, the internal combustion engine is switched off during a complete vehicle stop, during idling with low speed or during idling without the need of supporting the vehicle movement by the internal combustion engine. During the phases in which the engine is switched off, most of the electric and electronic components of the car need to be supplied by the battery without support of the alternator. In addition, in most cases an additional regenerative braking (recuperation or regeneration of braking energy) function is installed. The batteries under these applications are stressed in a completely different way compared to classical starter batteries. Aside of these additional properties, those batteries need to crank the ICE and support the lighting and also auxiliary functions in a standard operating mode with support of the alternator when the internal combustion engine is switched on. All batteries under this scope need to fulfil basic functions, which are tested under application of EN 50342-1:2015. This European Standard is applicable to batteries for the following purposes: - Lead-acid batteries of the dimensions according to EN 50342-2 for vehicles with the capability to automatically switch off the ICE during vehicle operation either in standstill or moving ("Start-Stop"); - Lead-acid batteries of the dimensions according to EN 50342-2 for vehicles with Start-Stop applications with the capability to recover braking energy or energy from other sources. This standard is not applicable to batteries for purposes other than mentioned above, but it is applicable to EFB delivered in dry-charged conditions according to EN 50342 1:2015, Clause 7. NOTE The applicability of this standard also for batteries according to EN 50342-4 is under consideration.

Blei-Akkumulatoren-Starterbatterien - Teil 6 : Batterien für Mikrozyklen-Anwendungen

Batteries d'accumulateurs de démarrage au plomb - Partie 6: Batteries pour applications micro-cycles

Svinčeno-kislinske zaganjalne baterije - 6. del: Baterije za mikrociklične aplikacije

Ta standard se uporablja za svinčeno-kislinske baterije z nazivno napetostjo 12 V, ki se uporabljajo predvsem kot vir napajanja za zagon motorjev z notranjim izgorevanjem (ICE), razsvetljavo in tudi za pomožno opremo vozil z motorji ICE. Običajen te baterije imenujemo »zaganjalne baterije«. Tudi baterije z nazivno napetostjo 6 V so zajete v področje uporabe tega standarda. Vse navedene napetosti je treba v primeru baterij z napetostjo 6 V deliti z 2. V področje uporabe tega standarda spadajo baterije, ki se uporabljajo za mikrociklične aplikacije v vozilih, ki jih je mogoče imenovati tudi aplikacije Start-Stop (ali Stop-Start, sistem zaustavitve v prostem teku, mikrohibridne aplikacije ali sistem »ustavi v prostem teku in spelji«). Pri vozilih s to posebno funkcijo se motor z notranjim izgorevanjem izklopi, ko se vozilo povsem zaustavi, v prostem teku z nizko hitrostjo ali v prostem teku brez potrebe po omogočanju premikanja vozila z motorjem z notranjim izgorevanjem. V času, ko je motor izklopljen, se mora večina električnih in elektronskih komponent vozila napajati prek baterije brez podpore alternatorja. Poleg tega je v večini primerov nameščena dodatna funkcija regenerativnega zaviranja (povrnitev ali obnovitev zavorne energije). Baterije v tovrstnih aplikacijah so obremenjene povsem drugače kot običajne zaganjalne baterije. Poleg teh dodatnih lastnosti morajo te baterije pognati ročico motorja ICE in omogočati delovanje svetil in pomožnih funkcij v standardnem načinu obratovanja s podporo alternatorja, ko je motor z notranjim izgorevanjem izklopljen. Vse baterije, ki spadajo v področje uporabe tega standarda, morajo izpolnjevati osnovne funkcije, preskušene v okviru uporabe standarda EN 50342-1. Ta standard se uporablja za baterije za naslednje namene:  
• svinčeno-kislinske baterije z dimenzijami v skladu s standardom EN 50342-2 za vozila s funkcijo samodejnega izklopa motorja ICE med uporabo nepremikajočega se ali premikajočega se vozila (»Start-Stop«);
• svinčeno-kislinske baterije z dimenzijami v skladu s standardom EN 50342-2 za vozila z aplikacijami Start-Stop in funkcijo obnavljanja zavorne energije ali energije iz drugih virov. Ta standard se ne uporablja za baterije za druge namene. Opomba: Upošteva se tudi uporaba tega standarda za baterije v skladu s standardom EN 50342-4.

General Information

Status
Published
Publication Date
19-Nov-2015
Current Stage
6060 - Document made available
Due Date
20-Nov-2015
Completion Date
20-Nov-2015

RELATIONS

Buy Standard

Standard
EN 50342-6:2016 - BARVE na PDF-str 19,28
English language
27 pages
sale 10% off
Preview
sale 10% off
Preview
e-Library read for
1 day

Standards Content (sample)

SLOVENSKI STANDARD
SIST EN 50342-6:2016
01-marec-2016

6YLQþHQRNLVOLQVNH]DJDQMDOQHEDWHULMHGHO%DWHULMH]DPLNURFLNOLþQHDSOLNDFLMH

Lead-acid starter batteries - Part 6: Batteries for Micro-Cycle Applications

Blei-Akkumulatoren-Starterbatterien - Teil 6 : Batterien für Mikrozyklen-Anwendungen

Batteries d'accumulateurs de démarrage au plomb - Partie 6: Batteries pour applications

micro-cycles
Ta slovenski standard je istoveten z: EN 50342-6:2015
ICS:
29.220.20 .LVOLQVNLVHNXQGDUQLþOHQLLQ Acid secondary cells and
EDWHULMH batteries
SIST EN 50342-6:2016 en,fr

2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

---------------------- Page: 1 ----------------------
SIST EN 50342-6:2016
---------------------- Page: 2 ----------------------
SIST EN 50342-6:2016
EUROPEAN STANDARD EN 50342-6
NORME EUROPÉENNE
EUROPÄISCHE NORM
November 2015
ICS 29.220.20
English Version
Lead-acid starter batteries - Part 6: Batteries for Micro-Cycle
Applications

Batteries d'accumulateurs de démarrage au plomb - Partie Blei-Akkumulatoren-Starterbatterien - Teil 6 : Batterien für

6: Batteries pour applications micro-cycles Mikrozyklen-Anwendungen

This European Standard was approved by CENELEC on 2015-10-05. CENELEC members are bound to comply with the CEN/CENELEC

Internal Regulations which stipulate the conditions for giving this European Standard the status of a national standard without any alteration.

Up-to-date lists and bibliographical references concerning such national standards may be obtained on application to the CEN-CENELEC

Management Centre or to any CENELEC member.

This European Standard exists in three official versions (English, French, German). A version in any other language made by translation

under the responsibility of a CENELEC member into its own language and notified to the CEN-CENELEC Management Centre has the

same status as the official versions.

CENELEC members are the national electrotechnical committees of Austria, Belgium, Bulgaria, Croatia, Cyprus, the Czech Republic,

Denmark, Estonia, Finland, Former Yugoslav Republic of Macedonia, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia,

Lithuania, Luxembourg, Malta, the Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland,

Turkey and the United Kingdom.
European Committee for Electrotechnical Standardization
Comité Européen de Normalisation Electrotechnique
Europäisches Komitee für Elektrotechnische Normung
CEN-CENELEC Management Centre: Avenue Marnix 17, B-1000 Brussels

© 2015 CENELEC All rights of exploitation in any form and by any means reserved worldwide for CENELEC Members.

Ref. No. EN 50342-6:2015 E
---------------------- Page: 3 ----------------------
SIST EN 50342-6:2016
EN 50342-6:2015 (E)
Contents Page

European foreword ................................................................................................................................ 4

1 Scope ......................................................................................................................................... 5

2 Normative references ............................................................................................................... 5

3 General ...................................................................................................................................... 5

3.1 Designation of starter batteries .............................................................................................. 5

3.2 Condition on delivery ............................................................................................................... 5

4 General requirements — Identification and labelling ........................................................... 5

5 General test conditions ............................................................................................................ 6

5.1 Characteristics and abbreviations .......................................................................................... 6

5.1.1 Nominal capacity C ................................................................................................................. 6

5.1.2 Cranking current I ................................................................................................................. 6

5.2 Syntax of test descriptions ...................................................................................................... 6

5.3 Requirements for measuring equipment capability .............................................................. 8

5.3.1 Equipment requirements for the micro-hybrid test MHT (7.2) ............................................. 8

5.3.2 Equipment requirements for the dynamic charge acceptance test DCA (7.3) ................... 9

5.3.3 Water bath ................................................................................................................................. 9

5.3.4 Equipment for other tests, measuring instruments .............................................................. 9

5.4 Sampling of batteries ............................................................................................................... 9

6 Test sequence ........................................................................................................................... 9

7 Inspections and test procedures .......................................................................................... 11

7.1 Charging of batteries.............................................................................................................. 11

7.2 Micro-hybrid test (MHT) ......................................................................................................... 11

7.2.1 Purpose ................................................................................................................................... 11

7.2.2 Procedure ................................................................................................................................ 11

7.2.3 Battery preparation................................................................................................................. 11

7.2.4 Micro-cycles ............................................................................................................................ 11

7.2.5 Check-up after cycling ........................................................................................................... 12

7.2.6 Data evaluation ....................................................................................................................... 13

7.3 Dynamic Charge acceptance test (DCA) .............................................................................. 13

7.4 Endurance in cycle test with 17,5 % depth of discharge (DoD) ......................................... 17

7.5 Endurance in cycle test with 50 % depth of discharge (DoD) at 40 °C and preceded

deep discharge ....................................................................................................................... 18

8 Requirements and battery performance levels ................................................................... 20

8.1 General .................................................................................................................................... 20

8.2 Tests to be passed (no performance differentiation) ......................................................... 20

8.3 Tests determining the micro-cycle performance level ....................................................... 21

Annex A (normative) Flow charts of DCA test procedure, 7.3 ....................................................... 22

Annex B (normative) Marking / Labelling of Batteries .................................................................... 26

Bibliography ......................................................................................................................................... 27

---------------------- Page: 4 ----------------------
SIST EN 50342-6:2016
EN 50342-6:2015 (E)
Tables

Table 1 — Test steps .............................................................................................................................. 6

Table 2 — Description of columns ....................................................................................................... 7

Table 3 — Acronyms and Symbols ...................................................................................................... 8

Table 4 — Equipment requirements for the micro-hybrid test MHT ................................................. 8

Table 5 — Equipment requirements for the dynamic charge acceptance test DCA ....................... 9

Table 6 — Test sequence .................................................................................................................... 10

Table 7 — MHT – Battery preparation ................................................................................................ 11

Table 8 — MHT – Micro-cycle .............................................................................................................. 12

Table 9 — MHT – Check-up after cycling ........................................................................................... 12

Table 10 — DCA – Pre-cycling ............................................................................................................ 14

Table 11 — DCA – Charge Acceptance qDCA procedure ................................................................ 14

Table 12 — DCA – The DCA procedure ........................................................................................... 15

Table 13 — DCA – The DCR part ...................................................................................................... 16

Table 14 — Endurance 17,5 % DoD – Cycling units ......................................................................... 18

Table 15 — Endurance 50 % DoD – Deep discharge part ................................................................ 19

Table 16 — Endurance 50 % DoD – Cycling part .............................................................................. 20

Table 17 — Requirements of tests to be passed .............................................................................. 21

Table 18 — Requirements of tests determining the micro-cycle performance level M1…M3 ..... 21

Figures

Figure 1 — Sub-phases of the DCRss part ........................................................................................ 17

Figure B.1 — Optional Start-Stop logo .............................................................................................. 26

---------------------- Page: 5 ----------------------
SIST EN 50342-6:2016
EN 50342-6:2015 (E)
European foreword

This document (EN 50342-6:2015) has been prepared by CLC/TC 21X “Secondary cells and

batteries”.
The following dates are fixed:
• latest date by which this document has (dop) 2016-10-05
to be implemented at national level by
publication of an identical national
standard or by endorsement
• latest date by which the national (dow) 2018-10-05
standards conflicting with this
document have to be withdrawn

Attention is drawn to the possibility that some of the elements of this document may be the subject of

patent rights. CENELEC [and/or CEN] shall not be held responsible for identifying any or all such

patent rights.

EN 50342, Lead-acid starter batteries, is currently composed of the following parts:

— Part 1: General requirements and methods of test [currently at Formal Vote stage];

— Part 2: Dimensions of batteries and marking of terminals;
— Part 3: Terminal system for batteries with 36 V nominal voltage;
— Part 4: Dimensions of batteries for heavy vehicles;
— Part 5: Properties of battery housings and handles;
— Part 6: Batteries for Micro-Cycle Applications [the present document];

— Part 7: General requirements and methods of tests for motorcycle batteries [currently at Formal

Vote stage].
---------------------- Page: 6 ----------------------
SIST EN 50342-6:2016
EN 50342-6:2015 (E)
1 Scope

This European Standard is applicable to lead-acid batteries with a nominal voltage of 12 V, used

primarily as power source for the starting of internal combustion engines (ICE), lighting and also for

auxiliary equipment of ICE vehicles. These batteries are commonly called “starter batteries”. Batteries

with a nominal voltage of 6 V are also included in the scope of this standard. All referenced voltages

need to be divided by two for 6 V batteries. The batteries under scope of this standard are used for

micro-cycle applications in vehicles which can also be called Start-Stop (or Stop-Start, idling-stop

system, micro-hybrid or idle-stop-and-go) applications. In cars with this special capability, the internal

combustion engine is switched off during a complete vehicle stop, during idling with low speed or

during idling without the need of supporting the vehicle movement by the internal combustion engine.

During the phases in which the engine is switched off, most of the electric and electronic components

of the car need to be supplied by the battery without support of the alternator. In addition, in most

cases an additional regenerative braking (recuperation or regeneration of braking energy) function is

installed. The batteries under these applications are stressed in a completely different way compared

to classical starter batteries. Aside of these additional properties, those batteries need to crank the

ICE and support the lighting and also auxiliary functions in a standard operating mode with support of

the alternator when the internal combustion engine is switched on. All batteries under this scope need

to fulfil basic functions, which are tested under application of EN 50342-1:2015.

This European Standard is applicable to batteries for the following purposes:

• Lead-acid batteries of the dimensions according to EN 50342-2 for vehicles with the capability to

automatically switch off the ICE during vehicle operation either in standstill or moving (“Start-

Stop”);

• Lead-acid batteries of the dimensions according to EN 50342-2 for vehicles with Start-Stop

applications with the capability to recover braking energy or energy from other sources.

This standard is not applicable to batteries for purposes other than mentioned above, but it is

applicable to EFB delivered in dry-charged conditions according to EN 50342-1:2015, Clause 7.

NOTE The applicability of this standard also for batteries according to EN 50342-4 is under consideration.

2 Normative references

The following documents, in whole or in part, are normatively referenced in this document and are

indispensable for its application. For dated references, only the edition cited applies. For undated

references, the latest edition of the referenced document (including any amendments) applies.

EN 50342-1:2015, Lead-acid starter batteries — Part 1: General requirements and methods of test

3 General
3.1 Designation of starter batteries
Regarding the designation of starter batteries, refer to EN 50342-1:2015, 3.2.
3.2 Condition on delivery
Regarding the condition on delivery, refer to EN 50342-1:2015, 3.3.
4 General requirements — Identification and labelling

The batteries shall be identified according to the legal demands within the European community.

NOTE The regulations of the battery directive 2006/66/EC and the amendment 2008/12/EC or their

equivalent national laws need to be applied.
---------------------- Page: 7 ----------------------
SIST EN 50342-6:2016
EN 50342-6:2015 (E)

For detailed information about measurement and labelling EN 50342-1 shall be used.

In addition to the mandatory information defined in EN 50342-1:2015, 4.1 and Annexes A and C, the

battery shall be marked with the micro-cycling performance level according to this standard (8.3).

For better identification and comparison of batteries under the scope of this standard, a special

marking specified in Annex B shall be used by the battery manufacturer.
5 General test conditions
5.1 Characteristics and abbreviations
5.1.1 Nominal capacity C
Refer to EN 50342-1:2015, 3.4.2.
5.1.2 Cranking current I
Refer to EN 50342-1:2015, 3.4.1.
5.2 Syntax of test descriptions

The test description is given in tabular form. All test steps shall be carried out in a water bath

according to 5.3.3 at the given temperature, if not stated otherwise.
The following definitions and acronyms are used:
Test steps:
Table 1 — Test steps
Acronym Test step Description
CHA Charge Battery to be charged with given parameters
DCH Discharge Battery to be discharged with given parameters

No charging or discharging but measurement of voltage as required. If the battery is connected

PAU Pause
to the test unit, there shall be no quiescent current.
RPT Repeat Instruction to repeat certain steps several times

CAS Case of Decision point leading to different actions dependent on the value of the reference variable

---------------------- Page: 8 ----------------------
SIST EN 50342-6:2016
EN 50342-6:2015 (E)
Description of columns:
Table 2 — Description of columns
Column text Description
Structure General explanation of test block
N° Numbering of individual test steps
Definition of test phase of individual step according to Table 1.

NOTE All steps in each table are numbered subsequently starting at “10” The next table of the same

section starts at “20”, etc.
Example:
10 Action 1 20 Action 1
Step
11 Action 2 21 Action 2
12 Action 3 22 Action 3
23 Action 4
T Duration of the individual step in days [d], hours [h] or seconds [s]
Voltage in Volts to be maintained during the step.

In case of a “CHA” phase, this is the constant charging voltage to be given by the rectifier.

U [V]

In case of a “DCH” phase, this is a cut off criteria at which the phase shall be stopped for the defined

current.
Current in Ampere to be maintained during the step.
I [A] In case of a “CHA” phase, this is a current limitation for this step.

In case of a “DCH” phase this is the constant discharge current to be given by the rectifier

Description Explanation of individual test step
Data acquisition
Recommended data acquisition frequency
frequency
Result of
measurement of Final result of the individual test step to be reported
each step
---------------------- Page: 9 ----------------------
SIST EN 50342-6:2016
EN 50342-6:2015 (E)
Acronyms and symbols:
Table 3 — Acronyms and Symbols
Acronym Acronym
Description Description
or Symbol or Symbol
Average charge current in DCA test after
C Effective capacity [Ah] I
e c
charge history [A]
Average charge current in DCA test after
C Nominal capacity [Ah] I
n d
discharge history [A]
Average charge current in DCA test during
C Recharged capacity [Ah] I
rch r
regenerative braking [A]
DoD Depth of discharge [% of C ] Q Charged capacity [Ah]
n CHA
EOS End of step Q Discharged capacity [Ah]
DCH
I Charge current [A] R Calculated dynamic internal resistance [Ω]
CHA dyn
I Discharge current for cranking[A] R Internal resistance [Ω]
CC i
Weighted normalized dynamic charge Reserve capacity (discharge with a fixed

IDCA acceptance, measured in A per Ah RC current of 25 A to U = 10,5 V), used in DCA

nominal capacity C [A/Ah] test, subsection 7.3
I Discharge current [A] t Discharge time [s]
DCH DCH
Nominal discharge current [A]
I U Charging voltage [V]
n c
I [A] = C [Ah] / 20 [h]
n n
5.3 Requirements for measuring equipment capability
5.3.1 Equipment requirements for the micro-hybrid test MHT (7.2)
Table 4 — Equipment requirements for the micro-hybrid test MHT
Parameter Range Accuracy Sampling rate Sampling accuracy
U 14…16 V ±0,04 V 10 ms ±0,01 V
CHA
I 0…100 A ±0,5 % 10 ms ±0,1 %
CHA
Q 10 ms ±1 mAh
CHA
U 6...14 V 10 ms ±0,01 V
DCH
0...300 A with
I ±0,5 % 10 ms ±0,1 %
DCH
300 A tDCH ≥ 1s every minute, transition time < 0,01 s
Q 10 ms ±1 mAh
CHA
---------------------- Page: 10 ----------------------
SIST EN 50342-6:2016
EN 50342-6:2015 (E)
5.3.2 Equipment requirements for the dynamic charge acceptance test DCA (7.3)
Table 5 — Equipment requirements for the dynamic charge acceptance test DCA
Parameter Range Accuracy Sampling rate Sampling accuracy
U 14…18 V ±0,04 V 200 ms ±0,01 V
CHA
I 0…200 A ±0,5 % 200 ms ±0,1 %
CHA
Q 10 ms ±1 mAh
CHA
U 6...14 V 200 ms ±0,01 V
DCH
I 0...100 A ±0,5 % 200 ms ±0,1 %
DCH
Q 10 ms ±1 mAh
CHA

Computer controlled unit needed with the ability to use integrated charge balance (e.g. Q and

CHA

Q ) for terminating discharge steps. The software shall be able to output the information in the

DCH

format of standard table calculation programs or special software to output tables or graphs.

5.3.3 Water bath
Refer to EN 50342-1:2015, 5.3.2.
5.3.4 Equipment for other tests, measuring instruments
Refer to EN 50342-1:2015, 5.3.1.
5.4 Sampling of batteries
Refer to EN 50342-1:2015, 5.1.
6 Test sequence
The test sequence is shown in Table 6.

The total number of 4 batteries shall be tested according to the test sequence of Table 6. The

requirements of C capacity check and cranking performance test shall be fulfilled according to the

requirements defined in EN 50342-1.

In addition, more batteries shall be tested according to EN 50342-1:2015, 5.4. Refer to the test

sequence given there, with one exception:

• Test battery sample No. 4 undergoes a 50 % DoD test with preceding discharge. This test

replaces the endurance cycling test defined in EN 50342-1:2015, 5.4, battery sample No. 1, which

may be omitted.
---------------------- Page: 11 ----------------------
SIST EN 50342-6:2016
EN 50342-6:2015 (E)
Table 6 — Test sequence
Sample No.
No. Test Sequence Test Procedure
1 2 3 4
1 Initial charge prior to test EN 50342–6:2015, 7.1 × × × ×
2 Capacity check C EN 50342–1:2015, 6.1 × × ×
3 Cranking performance test EN 50342–1:2015, 6.2 ×
4 Capacity check C EN 50342–1:2015, 6.1 ×
5 Cranking performance test EN 50342–1:2015, 6.2 ×
6 Capacity check C EN 50342–1:2015, 6.1 ×
7 MHT (micro-hybrid test) EN 50342–6, 7.2 ×
8 DCA test EN 50342–6:2015, 7.3 ×
9 Endurance test 17,5 % DoD EN 50342–6:2015, 7.4 ×
10 Deep discharge 7 d EN 50342–6:2015, 7.5.3 ×
11 Rest time 1 to 4 days EN 50342–6:2015, 7.5.4 ×
12 Capacity check C EN 50342–1:2015, 6.1
e ×
13 Cranking performance test EN 50342–1:2015, 6.2 ×
14 Endurance test 50 % DoD EN 50342–6:2015, 7.5.5 ×
15 High current discharge test, low T EN 50342–1:2015, 6.3 ×
16 Capacity check C EN 50342–1:2015, 6.1 ×
---------------------- Page: 12 ----------------------
SIST EN 50342-6:2016
EN 50342-6:2015 (E)
7 Inspections and test procedures
7.1 Charging of batteries

All tests shall commence with fully charged batteries. Refer to EN 50342-1:2015, 5.2.

7.2 Micro-hybrid test (MHT)
7.2.1 Purpose

This test checks the ability of a battery to provide the power to restart the engine after frequent stop

phases, its ability to recover state of charge afterwards and the aging effects due to shallow pulse

loads.
7.2.2 Procedure

During the entire test procedure, the battery shall be placed into a water bath at 25 ± 2 °C, according

to 5.3.3. The micro-hybrid test is divided into three sections:
a) Battery preparation (set SoC to 85 %, 7.2.3)
b) Micro-cycles (7.2.4: 80 units with 100 cycles each = 8 000 cycles in total)
c) Check up after cycling (7.2.5)
7.2.3 Battery preparation

The battery shall be discharged to 85 % of nominal capacity according to Table 7.

Table 7 — MHT – Battery preparation
Result of
Data
Structure N° Step t U [V] I [A] Description T [°C] acquisition
measurement
frequency
of each step
Discharge to 85 %
10 DCH 3 h > 10,5 C / 20 25 Q
e DCH
Set battery
of C
SoC to
min 12 h
85 %
11 PAU Relaxation 25 EOS U(EOS)
max 60 h
7.2.4 Micro-cycles

This high-rate cycling test often leads to an internal battery temperature significantly higher than

25 °C. This means the charging voltage of 14,0 V (step 21) is in line with typical vehicle operation

parameters.

The micro-cycle test has a fixed depth of discharge of 2 % C . The charge time in step 21 (Table 8)

and the discharge time in step 22 depend on the nominal capacity C of the battery and shall be

calculated and rounded to nearest integer value in seconds according to:
0,02 C []Ah− 0,083 Ah
( ) s
ts[] ⋅3 600
DCH
48 Ah
---------------------- Page: 13 ----------------------
SIST EN 50342-6:2016
EN 50342-6:2015 (E)
Table 8 — MHT – Micro-cycle
Data Result of
Structure N° Step t U [V] I [A] Description T [°C] acquisition measurement
frequency of each step
20 PAU 10 s Relaxation 25 EOS U(10s)
21 CHA 1 + tDCH [s] 14,0 100 Charge 25 EOS I(EOS), QCHA(EOS)
Low rate
22 DCH t [s] 48 25 EOS U(EOS), Q
DCH DCH
discharge step
High rate
Micro- 23 DCH 1 s > 9,5 300 25 EOS U(EOS), Q , R
DCH dyn
discharge step
cycle
sequence Run steps 20–23
24 RPT
100 times
Storage and cooling
25 PAU 12 h 25 EOS U(EOS)
down after cycling
Run steps 20–25
26 RPT
80 times

The dynamic internal resistance R shall be calculated from the load voltages of steps 22 and 23 of

dyn
Table 8 according to:
U EOS [V ]−U EOS [V ]
( ) ( )
48 AA300
R []Ω=
dyn
48 AA− 300
7.2.5 Check-up after cycling

The check-up procedure shall be performed according to Table 9 within 60 h after the end of the

micro-cycling part (step 26 of Table 8).
Table 9 — MHT – Check-up after cycling
Data Result of
Structure N° Step t U [V] I [A] Description T [°C] acquisition measurement
frequency of each step
Remaining C
30 DCH > 10,5 I 25 C
n e
capacity
Check-up
31 CHA 24 h U 5·I Charge 25 Q
c n CHA
sequence after
cycling
32 DCH > 10,5 I C capacity 25 C
n e e
33 CHA 24 h U 5·I Charge 25 Q
c n CHA
---------------------- Page: 14 ----------------------
SIST EN 50342-6:2016
EN 50342-6:2015 (E)
7.2.6 Data evaluation
The following data evaluations shall be performed.
Data from cycling: Mean R Average of the R values of every block of
dyn dyn
100 cycles
Normalized mean R The mean R values shall be normalized to the
dyn dyn
value found for the first block of 100 cycles for each
battery (step 22 and step 23 of Table 8)
Minimum U(EOS) Minimum value of the end of discharge voltages of
300A
the 300 A discharge step of every block of
100 cycles (step 23 of Table 8)
U(EOS) EOS voltage of each 12 h rest phase (step 25 of
Table 8)
Data from check-up: Remaining C According to line 30 of Table 9
C According to line 32 of Table 9
7.3 Dynamic Charge acceptance test (DCA)
7.3.1 Purpose:

Batteries in Start-Stop applications shall be recharged in a short time frame to maintain energy

balance during vehicle operation. To determine the dynamic charge acceptance capability therefore is

necessary to differentiate between batteries suitable for Start-Stop and for standard applications. This

test shall check the ability of a battery to adsorb current peaks at different SoC after charging or

discharging operation as well as after simulated Start-Stop and regenerative braking operation. It shall

indicate the decrease of dynamic charge acceptance under conditions of micro-cycle applications.

7.3.2 Procedure:

7.3.3 During the entire test procedure, the battery shall be placed into a water bath at 25 ± 2 °C,

according to 5.3.3. This test consists of three consecutive parts:
• Pre-cycling (7.3.4)
• Charge acceptance tests qDCA delivering I and I (7.3.5 – 7.3.8)
c d
• DCR micro-cycling part delivering I (7.3.9 – 7.3.11)
ss r

The final result is calculated according to 7.3.12 by using results I , I and I . Flow charts of the test

c d r
procedures are depicted in Annex A of this document.
Abbreviations used in this section:
• DCA – dynamic charge acceptance;
• qDCA – quick DCA test;
• DCA – DCA pulse profile;
• DCR – dynamic charge acceptance real world Start-Stop.
7.3.4 Pre-cycling shall be defined according to this scheme:
---------------------- Page: 15 ----------------------
SIST EN 50342-6:2016
EN 50342-6:2015 (E)
Table 10 — DCA – Pre-cycling
Data
Result of measurement
Structure N° Step t U [V] I [A] Description acquisition
of each step
frequency
10 DCH > 10,5 25 RC discharge EOS RC capacity
Ah recharged
Recharge voltage for
11 CHA 24 h U 5·I EOS
c n
flooded / VRLA
End of charge current
12 PAU 1 h Relaxation
13 DCH > 10,5 25 RC discharge EOS RC capacity
Ah recharged
Recharge voltage for
Pre-cycling
14 CHA 24 h U 5·I EOS
c n
flooded / VRLA
End of charge current
15 PAU 1 h Relaxation
C Calculate:
16 DCH > 10,5 1·I C discharge EOS
n e
C = C – 0,2 · C
rch e n
Stop recharge when
Recharge voltage for
17 CHA U 5·I
c n
flooded / VRLA
C [Ah] is reached
rch

7.3.5 The charge acceptance qDCA procedure shall be defined according to the scheme of Table

11. The DCApp procedure used in steps 21 and 27 is defined in Table 12.
Table 11 — DCA – Charge Acceptance qDCA procedure
Data
Result of measurement
Structure N° Step t U [V] I [A] Description acquisition
of each step
frequency
min 20 h
20 PAU Rest phase EOS OCV
max 72 h
DCA procedure
I = integrated charge /
21 DCA EOS
200 s
acc. to 7.3.6
Recharge voltage for
22 CHA 12 h U 5·I EOS
c n
flooded / VRLA
18,0 / 0,5·I / Recharge voltage for
23 CHA 4 h
...

Questions, Comments and Discussion

Ask us and Technical Secretary will try to provide an answer. You can facilitate discussion about the standard in here.