ÀüÀÚ°øÇÐȸ ³í¹®Áö (Journal of The Institute of Electronics and Information Engineers)
Current Result Document : 5 / 5
ÇѱÛÁ¦¸ñ(Korean Title) |
Àü±âÀÚµ¿Â÷¿ë ¹èÅ͸® ¼¿ Àü¾Ð ÃøÁ¤À» À§ÇÑ ¾Æ³¯·Î±× Front-End ȸ·Î ¼³°è |
¿µ¹®Á¦¸ñ(English Title) |
Analog Front-End Circuits Design for Electric Vehicles Battery Cell Voltage Measurement |
ÀúÀÚ(Author) |
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Kyuho Kim
Jinkook Yun
Ho-Yul Choi
Donggil Jeong
Hojeong Jin
Kyoungrok Cho
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¿ø¹®¼ö·Ïó(Citation) |
VOL 57 NO. 04 PP. 0153 ~ 0161 (2020. 04) |
Çѱ۳»¿ë (Korean Abstract) |
º» ³í¹®¿¡¼´Â Àü±â ÀÚµ¿Â÷ ¹èÅ͸® ¼º´É ÃÖÀûÈ °ü¸®¿Í ½Ç½Ã°£ »óÅ Áø´ÜÀ» À§ÇÑ ¹èÅ͸® ¼¿ÀÇ °íÁ¤¹Ð Àü¾Ð ÃøÁ¤À» À§ÇÑ ¾Æ³¯·Î±× Front-End ȸ·Î¸¦ ¼³°èÇÏ¿´´Ù. ȸ·Î´Â Å©°Ô °íÀü¾Ð ¸ÖƼÇ÷¹¼¿Í ·¹º§ ½ÃÇÁÅÍr, µ¨Å¸-½Ã±×¸¶ ¸ðµâ·¹ÀÌÅÍ¿Í ¼±Çü¼ºÀ» °³¼±ÇÑ ¹êµå°¸ ±âÁØÀü¾Ð »ý¼º ȸ·Î¿Í ADC ±âÁØÀü¾Ð »ý¼º ȸ·Î·Î ±¸¼ºÇÏ¿´´Ù. ¼³°èÇÑ È¸·Î´Â 40V¿ë 0.18um BCD °øÁ¤°ú 0.18um CMOS °øÁ¤À¸·Î ¼³°èÇÏ¿© MCP·Î Á¦ÀÛÇÏ¿´´Ù. ¼±Çü¼ºÀ» °³¼±ÇÑ ¹êµå°¸ ±âÁØÀü¾Ð »ý¼º ȸ·Î´Â BJTÀÇ VBEÀÇ ºñ¼±Çü¼ºÀ» º¸Á¤ °¡´ÉÇϵµ·Ï ¼³°èÇÏ¿´°í ÃøÁ¤ °á°ú 300uV ¹Ì¸¸ÀÇ ¼±Çü¼ºÀ» È®º¸ÇÏ¿´´Ù. ¼³°è Á¦ÀÛÇÑ È¸·Î´Â -20¡É¿¡¼ 60¡É ¿Âµµ±¸°£°ú 1.5V¿¡¼ 4.3V ¹èÅ͸® ¼¿ Àü¾Ð ¿µ¿ª¿¡¼ ÃøÁ¤ÇÏ°í º¸Á¤ÇÑ °á°ú 460uV ¹Ì¸¸ÀÇ Àü¾Ð ÃøÁ¤ Á¤¹Ðµµ¸¦ ´Þ¼ºÇÏ¿´´Ù.
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¿µ¹®³»¿ë (English Abstract) |
This paper presents the design of an analog front-end circuits for high-precision voltage measurement of battery cells for optimization of electric vehicle battery performance and real-time condition diagnosis. The circuit consists of a high voltage multiplexer, a level shifter, a delta-sigma modulator, a bandgap reference voltage generator improving linearity, and ADC reference voltage generator. The circuit is designed by 40V 0.18um BCD process and 0.18um CMOS process and fabricated with MCP. The bandgap voltage reference circuit compensates the VBE of the BJT which improves linearity of less than 300uV. As the results, The chip shows voltage measurement accuracy less than 460uV in the temperature range of -20¡É to 60¡É and battery cell voltage range of 1.5V to 4.3V.
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Ű¿öµå(Keyword) |
Battery management
Bandgap reference
Curvature correction
Incremental ADC
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