Combining electric vehicle battery charging and battery cell equalisation in one circuit
Abstract Electric vehicles (EVs) require an onboard battery charger unit and a battery management system (BMS) unit that balances the voltage levels for each battery cell. So far, both units are two completely autarkic power electronics systems. The circuit presented here operates as a battery charg...
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| Main Authors: | , , , , |
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| Format: | Article |
| Language: | English |
| Published: |
Wiley
2021-12-01
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| Series: | IET Electrical Systems in Transportation |
| Online Access: | https://doi.org/10.1049/els2.12031 |
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| _version_ | 1849410112139034624 |
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| author | Huaxia Zhan Haimeng Wu Musbahu Muhammad Simon Lambert Volker Pickert |
| author_facet | Huaxia Zhan Haimeng Wu Musbahu Muhammad Simon Lambert Volker Pickert |
| author_sort | Huaxia Zhan |
| collection | DOAJ |
| description | Abstract Electric vehicles (EVs) require an onboard battery charger unit and a battery management system (BMS) unit that balances the voltage levels for each battery cell. So far, both units are two completely autarkic power electronics systems. The circuit presented here operates as a battery charger when the EV is connected to the grid and as a voltage balancer when the EV is driving. Thus, the proposed circuit utilises two functions in one and therefore eliminates the need of having two autarkic units reducing complexity and reduction in component count. The proposed circuit operates as a flyback converter and achieves power factor correction during battery charging. The constant‐current constant‐voltage (CC–CV) charging method is employed to charge the batteries. However, to limit the number of sensors that will be employed as a result of varying cells during charging, the battery current is estimated using a single current transducer and embedding a converter model in the controller. The operation of the circuit is presented in detail and is supported by simulation results. A laboratory prototype is built to verify the effectiveness of the proposed topology. Experiment results show that the proposed method provides an integrated solution of on‐board charging and voltage equalisation. |
| format | Article |
| id | doaj-art-803ae25be72c423ca6cfa1de9718255f |
| institution | Kabale University |
| issn | 2042-9738 2042-9746 |
| language | English |
| publishDate | 2021-12-01 |
| publisher | Wiley |
| record_format | Article |
| series | IET Electrical Systems in Transportation |
| spelling | doaj-art-803ae25be72c423ca6cfa1de9718255f2025-08-20T03:35:15ZengWileyIET Electrical Systems in Transportation2042-97382042-97462021-12-0111437739010.1049/els2.12031Combining electric vehicle battery charging and battery cell equalisation in one circuitHuaxia Zhan0Haimeng Wu1Musbahu Muhammad2Simon Lambert3Volker Pickert4School of Engineering Newcastle University Newcastle UKDepartment of Mathematics Physic and Electrical Engineering Northumbria University Newcastle UKSchool of Computing Engineering & Digital Technologies Teesside University Middlesbrough UKSchool of Engineering Newcastle University Newcastle UKSchool of Engineering Newcastle University Newcastle UKAbstract Electric vehicles (EVs) require an onboard battery charger unit and a battery management system (BMS) unit that balances the voltage levels for each battery cell. So far, both units are two completely autarkic power electronics systems. The circuit presented here operates as a battery charger when the EV is connected to the grid and as a voltage balancer when the EV is driving. Thus, the proposed circuit utilises two functions in one and therefore eliminates the need of having two autarkic units reducing complexity and reduction in component count. The proposed circuit operates as a flyback converter and achieves power factor correction during battery charging. The constant‐current constant‐voltage (CC–CV) charging method is employed to charge the batteries. However, to limit the number of sensors that will be employed as a result of varying cells during charging, the battery current is estimated using a single current transducer and embedding a converter model in the controller. The operation of the circuit is presented in detail and is supported by simulation results. A laboratory prototype is built to verify the effectiveness of the proposed topology. Experiment results show that the proposed method provides an integrated solution of on‐board charging and voltage equalisation.https://doi.org/10.1049/els2.12031 |
| spellingShingle | Huaxia Zhan Haimeng Wu Musbahu Muhammad Simon Lambert Volker Pickert Combining electric vehicle battery charging and battery cell equalisation in one circuit IET Electrical Systems in Transportation |
| title | Combining electric vehicle battery charging and battery cell equalisation in one circuit |
| title_full | Combining electric vehicle battery charging and battery cell equalisation in one circuit |
| title_fullStr | Combining electric vehicle battery charging and battery cell equalisation in one circuit |
| title_full_unstemmed | Combining electric vehicle battery charging and battery cell equalisation in one circuit |
| title_short | Combining electric vehicle battery charging and battery cell equalisation in one circuit |
| title_sort | combining electric vehicle battery charging and battery cell equalisation in one circuit |
| url | https://doi.org/10.1049/els2.12031 |
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