UL1642

Sixth Edition, Dated September 29, 2020 BBCV2: Recognized Component
Condition of Acceptability include BBCV3: Unlisted Component Condition of Acceptability include
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电池芯样品准备
• 样品准备
– 所有的测试样品均需新鲜且充饱电， Abnormal Charging Test 测试前需要按0.2C/hour 定电流放空
– 对于锂二次电池，首次申请或电池有新的化学特性（新的正极材 料），在25度下依照厂商定义的Capacity和Cycle Life（可充放 电次数），以25％的Cycle Life但不超过90天做Charge (end of charged voltage) – Discharge (end of discharge voltage) Cycling。
• Cells with a liquid cathode shall also conditioned by one-half discharge
Secondary batteries are continuously cycled as per the manufacture’s specifications—the full rated capacity is used and the number of cycles accumulated shall be at least equal to 25% of the advertised cycle life or cycled continuously 90 days, whichever is shorter.
– 试图在移除和丢弃电池时，降低因起火或爆炸对人员伤害的危 险
– 不包含吞咽电池或其成份，也不包含因切开电池而接触到其有 毒成份的危险
Glossary
BATTERY – General term for (1) A single cell, or (2) a group of cells connected together either in a series and/or parallel configuration. May be ready for use or may be an installed component. BATTERY PACK – A battery which is ready for use, contained in a rigid enclosure, with or without protective devices.
New Model
Primary batteries are to be completely discharged by connecting their terminals through resistors that provide
the desired level of discharge within 60 days.
– 对于锂一次电池，首次申请或电池有新的化学特性（新的正极材 料），需要在室温下Complete Discharge（60天内）以及Onehalf Discharge（仅针对液态阴极）
Sample Requirements
Variation List
Tests and
Variation Number
• SAFETY REQUIREMENTS FOR LITHIUM BATTERIES – UL1642
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• 2022.05
VERSION
UL Standard for Safety for Lithium Batteries, UL 1642
10
Sample Requirements
New model
11
Sample Requirements
Alternate samples
New model
12
Sample Requirements
Cathode material: LiCoO2 / LiFePO4 / Li(NixMnyCoz)O2 Shape: coin / cylindrical / prismatic / pouch Assembly method: winding / stacking
5(10)
5(10)
5(10)
5(10)
5(10) 5(10)
5(10)
Impact, G
5(10)
5(10)
5(10)
5(10)
5(10) 5(10)
5(10)
Projectile, C
10
10
10,
10
10
10
10
10
E
Heating, H
5(10)
5(10)
5(10)
5(10)
5(10)
10
Number of
8
Glossary
CELL OPERATING REGION
9
Glossary
CHARGED, FULLY A battery is considered fully charged when the maximum amount of electrical capacity, as specified by the manufacturer, is stored in the battery. DISCHARGED, COMPLETELY A primary cell or battery is considered completely discharged if the closed circuit voltage is less than 0.2 V, when connected to a 100-Ω resistive load and the short-circuit current has been reduced to less than 1 mA. DISCHARGED, FULLY A condition of the battery representing depletion of 100% of its rated capacity (for a primary cell or battery) or depletion to its end-point-voltage as specified by the manufacturer (for a secondary cell or battery). DISCHARGED, HALF A battery is considered half discharged when half of the battery's rated electrical capacity has been drained from it.
UL and the UL logo are trademarks of UL LLC © 2022. Proprietary & Confidential.
3
Scope
Primary & Secondary Lithium Batteries
o Contain metallic lithium or lithium alloy or lithium ion o A single electrochemical cell or two or more cells connected in series, parallel, or both o To reduce risk of injury due to fire or explosion o DO NOT cover the toxicity risk that result from ingestion nor cut open of lithium battery contents
Samples
1
2
3
4
5
6
7
8
9
10
11 12
13
Preconditioning
A, B
A, B
A
A
A, B
A
A
A
A
A
AA
A
Short Circuit at
5
5
5
5
5
5
5, J
5
55C
Abnormal
5
5
5, D
5
5, I
5
5
55
5
Charging
Forced Discharge
5x
n, F
Crush, G
UL and the UL logo are trademarks of UL LLC © 2022. Proprietary & Confidential.
2
• CONTENTS
• 1-Scope & Glossary • 2-Sample Requirements • 3-Test Requirements • 4-Marking Requirements
7
Glossary
COMPONENT, CURRENT-LIMITING – Any component employed to limit current during abnormal conditions. Current-limiting components include resistors, fuses, or thermal cutoffs. CURRENT, ABNORMAL CHARGING – Charging current to a primary cell or battery under fault condition.
6
Glossary
BATTERY, PRIMARY – A battery which can only be discharged once. It is not designed to be rechargeable and must be protected from a charging current. BATTERY, SECONDARY – A battery that is intended to be discharged and recharged many times in accordance with the manufacturer’s recommendations.
45(60)
45(60)
20
45(60)
40(50) 30 + 25 (30) 25(35) 25(35) 25(40) 10 20
20
Samples required,
5xn
K

A – As Received B – Check the test report of similar cells where preconditioning was conducted prior to testing. If the data on the preconditioned samples is more severe than the data for the fresh samples for the same cells, the variation testing shall also be conducted on samples subjected to the applicable preconditioning. C – Only conducted on Primary User Replaceable or Secondary cells D – Not conducted if mfg accepts the lower of the two abnormal charging current ratings E – Not conducted if vent is identical F – Test only if series application. For “n” number of cells in series, the total amount of samples is 5 x n. G – Since prismatic cells require two test orientations, 10 samples will be required for prismatic type. H - To test cells conditioned at the operating region boundaries per UL 1642 6.3 – 6.5, 10 cells will be required for secondary cells. I - Rechargeable battery cell some time makes vent during the testing. If the previous test result was vented, then Abnormal Charging testing is also necessary. J - The melt point of separator such as polyethylene is approx. 120C (It can be shut down the cell). If the surface temperature of previous test result is more than 100C, internal temperature may be more than 120C. In addition, if battery cell does not have protection device such as PTC, Short Circuit testing will be completed by melting of separator and/or complete discharge. K – Based on actual conditions, additional 5 to 10 samples may be necessary as backup, which has been added in this row.
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UL 1642 的相关要求
• Scope
– 一次电池（不可充电）二次电池（可充电），不管单颗、多颗、 串联或并联，只要是包含锂元素（不论其化学组成），经化学 反应将化学能转化为电能以给产品供电，就包含在这个规范中。
– 试图降低锂电池使用在产品时发生火灾或爆炸的危险，最终可 使用的电池仍需满足最终产品的要求