High-precision robust monitoring of charge/discharge current over a wide dynamic range for electric vehicle batteries using diamond quantum sensors
Abstract Accurate prediction of the remaining driving range of electric vehicles is difficult because the state-of-the-art sensors for measuring battery current are not accurate enough to estimate the state of charge. This is because the battery current of EVs can reach a maximum of several hundred...
| Main Authors: | , , , , , , , , , , |
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| Format: | Article |
| Language: | English |
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Nature Portfolio
2022-09-01
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| Series: | Scientific Reports |
| Online Access: | https://doi.org/10.1038/s41598-022-18106-x |
| _version_ | 1811273542694600704 |
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| author | Yuji Hatano Jaewon Shin Junya Tanigawa Yuta Shigenobu Akimichi Nakazono Takeharu Sekiguchi Shinobu Onoda Takeshi Ohshima Keigo Arai Takayuki Iwasaki Mutsuko Hatano |
| author_facet | Yuji Hatano Jaewon Shin Junya Tanigawa Yuta Shigenobu Akimichi Nakazono Takeharu Sekiguchi Shinobu Onoda Takeshi Ohshima Keigo Arai Takayuki Iwasaki Mutsuko Hatano |
| author_sort | Yuji Hatano |
| collection | DOAJ |
| description | Abstract Accurate prediction of the remaining driving range of electric vehicles is difficult because the state-of-the-art sensors for measuring battery current are not accurate enough to estimate the state of charge. This is because the battery current of EVs can reach a maximum of several hundred amperes while the average current is only approximately 10 A, and ordinary sensors do not have an accuracy of several tens of milliamperes while maintaining a dynamic range of several hundred amperes. Therefore, the state of charge has to be estimated with an ambiguity of approximately 10%, which makes the battery usage inefficient. This study resolves this limitation by developing a diamond quantum sensor with an inherently wide dynamic range and high sensitivity for measuring the battery current. The design uses the differential detection of two sensors to eliminate in-vehicle common-mode environmental noise, and a mixed analog–digital control to trace the magnetic resonance microwave frequencies of the quantum sensor without deviation over a wide dynamic range. The prototype battery monitor was fabricated and tested. The battery module current was measured up to 130 A covering WLTC driving pattern, and the accuracy of the current sensor to estimate battery state of charge was analyzed to be 10 mA, which will lead to 0.2% CO2 reduction emitted in the 2030 WW transportation field. Moreover, an operating temperature range of − 40 to + 85 °C and a maximum current dynamic range of ± 1000 A were confirmed. |
| first_indexed | 2024-04-12T23:01:19Z |
| format | Article |
| id | doaj.art-8396d7b75cc04911a1abe51aa22bc14b |
| institution | Directory Open Access Journal |
| issn | 2045-2322 |
| language | English |
| last_indexed | 2024-04-12T23:01:19Z |
| publishDate | 2022-09-01 |
| publisher | Nature Portfolio |
| record_format | Article |
| series | Scientific Reports |
| spelling | doaj.art-8396d7b75cc04911a1abe51aa22bc14b2022-12-22T03:13:03ZengNature PortfolioScientific Reports2045-23222022-09-0112111010.1038/s41598-022-18106-xHigh-precision robust monitoring of charge/discharge current over a wide dynamic range for electric vehicle batteries using diamond quantum sensorsYuji Hatano0Jaewon Shin1Junya Tanigawa2Yuta Shigenobu3Akimichi Nakazono4Takeharu Sekiguchi5Shinobu Onoda6Takeshi Ohshima7Keigo Arai8Takayuki Iwasaki9Mutsuko Hatano10Department of Electrical and Electronic Engineering, School of Engineering, Tokyo Institute of TechnologyYazaki CorporationYazaki CorporationDepartment of Electrical and Electronic Engineering, School of Engineering, Tokyo Institute of TechnologyYazaki CorporationDepartment of Electrical and Electronic Engineering, School of Engineering, Tokyo Institute of TechnologyNational Institutes for Quantum Science and TechnologyNational Institutes for Quantum Science and TechnologyDepartment of Electrical and Electronic Engineering, School of Engineering, Tokyo Institute of TechnologyDepartment of Electrical and Electronic Engineering, School of Engineering, Tokyo Institute of TechnologyDepartment of Electrical and Electronic Engineering, School of Engineering, Tokyo Institute of TechnologyAbstract Accurate prediction of the remaining driving range of electric vehicles is difficult because the state-of-the-art sensors for measuring battery current are not accurate enough to estimate the state of charge. This is because the battery current of EVs can reach a maximum of several hundred amperes while the average current is only approximately 10 A, and ordinary sensors do not have an accuracy of several tens of milliamperes while maintaining a dynamic range of several hundred amperes. Therefore, the state of charge has to be estimated with an ambiguity of approximately 10%, which makes the battery usage inefficient. This study resolves this limitation by developing a diamond quantum sensor with an inherently wide dynamic range and high sensitivity for measuring the battery current. The design uses the differential detection of two sensors to eliminate in-vehicle common-mode environmental noise, and a mixed analog–digital control to trace the magnetic resonance microwave frequencies of the quantum sensor without deviation over a wide dynamic range. The prototype battery monitor was fabricated and tested. The battery module current was measured up to 130 A covering WLTC driving pattern, and the accuracy of the current sensor to estimate battery state of charge was analyzed to be 10 mA, which will lead to 0.2% CO2 reduction emitted in the 2030 WW transportation field. Moreover, an operating temperature range of − 40 to + 85 °C and a maximum current dynamic range of ± 1000 A were confirmed.https://doi.org/10.1038/s41598-022-18106-x |
| spellingShingle | Yuji Hatano Jaewon Shin Junya Tanigawa Yuta Shigenobu Akimichi Nakazono Takeharu Sekiguchi Shinobu Onoda Takeshi Ohshima Keigo Arai Takayuki Iwasaki Mutsuko Hatano High-precision robust monitoring of charge/discharge current over a wide dynamic range for electric vehicle batteries using diamond quantum sensors Scientific Reports |
| title | High-precision robust monitoring of charge/discharge current over a wide dynamic range for electric vehicle batteries using diamond quantum sensors |
| title_full | High-precision robust monitoring of charge/discharge current over a wide dynamic range for electric vehicle batteries using diamond quantum sensors |
| title_fullStr | High-precision robust monitoring of charge/discharge current over a wide dynamic range for electric vehicle batteries using diamond quantum sensors |
| title_full_unstemmed | High-precision robust monitoring of charge/discharge current over a wide dynamic range for electric vehicle batteries using diamond quantum sensors |
| title_short | High-precision robust monitoring of charge/discharge current over a wide dynamic range for electric vehicle batteries using diamond quantum sensors |
| title_sort | high precision robust monitoring of charge discharge current over a wide dynamic range for electric vehicle batteries using diamond quantum sensors |
| url | https://doi.org/10.1038/s41598-022-18106-x |
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