Galushkin D.N. 1
Galushkin N.E. 2
Yazvinskaya N.N. 1
1 South-Russia State University of Economics and Services, Shakhty
2 Novoshakhtinsk Branchof Southern Federal University, Novoshakhtinsk
A study was performed on possibility of thermal runway in 2NKB-32, 2NKB-15, NKG-30CA NKG-10D nickel-cadmium batteries. With the above purpose the batteries were cyclically charged/discharged under severe conditions. The batteries were charged at constant voltages of 1,45; 1,67; 1,87; 2,2 V. The batteries were discharged by the current, in accordance with the operating manual for the batteries, up to the voltage of 1 V. For each battery type there were 640 charging/discharging cycles performed. In all cases of thermal runway observance charging of batteries was performed at voltage 2,2 V, which greatly exceeds average field operating voltage of the above batteries 1,35–1,5 V, i.e. the given results demonstrate, that probability of thermal runway occurrence grows with the growth of charging voltage. Besides in all cases of thermal runway the batteries had the service life exceeding five years, when the guaranteed service life of the batteries was three years, i.e. the above results demonstrate, that probability of thermal runway grows with the growth of batteries’ lifespan. In the result of thermal runway a big amount of hydrogen evolved in nickel-cadmium batteries: approximately 10 l(A·h)–1 for vented batteries, and 1,3 l(A·h)–1 for sealed batteries.
accumulator
nickel-cadmium
thermal runaway
hydrogen accumulation
1. Berezkin I. Akkumuljatornye batarei na osnove NiCd i NiMH ehlementov dlja malo-gabaritnojj otechestvennojj ehlektronnojj apparatury // Ehlektronnye komponenty. 2000. no. 4. рр. 64–67.
2. Vlijanie rezhima ehkspluatacii na stabilnost kharakteristik germetichnykh NK ak-kumuljatorov: sb. rabot po KhIT. L.: Ehnergija, 1989. 190 р.
3. Galushkin D.N., Galushkina N.N. Issledovanie processa teplovogo razgona v ni-kel’-kadmievykh akkumuljatorakh // Ehlektrokhimicheskaja ehnergetika. 2005. T. 5. no. 1. рр. 40–42.
4. Korovin N.V. Nikel-metallogidridnye akkumuljatory // Ehlektronnye komponen-ty. 2002. no. 4. рр. 99–103.
5. Korovin N.V. Khimicheskie istochniki toka spravochnik. M.: MEhI. 2003. 560 р.
6. Alvin J. Salkind, Joseph C. Duddy The Thermal Runaway Condition in Nickel-Cadmium Cells and Performance Characteristics of Sealed Light Weight Cells //Journal of the Electrochemical Society. Vol. 109. no. 5 May 1962. pp. 360–364.
7. Bindra Ashok New self-extinguishing electrolyte should lead to non-flammable lithium-ion battery // Electronic Design. 1998. Vol. 46. Is.12. рр. 31.
8. Robinson R.S., Tarascon J.M. // Journal of Power Sources. Vol. 48. Is. 3. 19 March 1994. рр. 277–284.
9. Takahisa Ohsaki, Takashi Kishi, Takashi Kuboki, Norio Takami, Nao Shimura, Yuichi Sato, Masahiro Sekino, Asako Satoh Overcharge reaction of lithium-ion batteries // Journal of Power Sources. 2005. Vol. 146. Is.1/2. рр. 97–100.
10. Wickham R.L. Thermal runaway // Wireless Review. 1998. Vol. 15. no. 19. рр. 3–8.
Рецензенты:
Евстратов В.А., д.т.н., профессор, декан технологического факультета ФГБОУ ВПО «ШИ (ф) ЮРГТУ (НПИ)» Минобрнауки России, г. Шахты;
Колесниченко И.В. д.т.н., профессор, зам. директора по образовательной деятельности ФГБОУ ВПО «ШИ (ф) ЮРГТУ (НПИ)» Минобрнауки России, г. Шахты.
Работа поступила в редакцию 17.09.2012.
