The service life, safety, and capacity of lithium-ion power battery packs relies heavily on the consistency among battery cells. Grouping is an effective procedure to improve consistency by screening cells with similar performance and assembling them into an identical group.
Essentially, battery grouping aims to categorize battery cells according to their diversities in various characteristics. These characteristics mainly comprise static capacity, voltage, internal resistance ( Li, 2014) and thermal behavior ( Fang et al., 2013 ). Battery grouping can be achieved via a similarity analysis of any characteristic above.
Battery grouping can be achieved via clustering techniques based on characteristics like static capacity, internal resistance etc. The dynamic characteristics-based method considers the battery performance during the entire charging-discharging process and has become one of the most promising grouping method.
After optimization, the parallel number of cells of the battery pack is 40, and the serial number is 113. apparently inverse to the sum of the operation cost and based vehicle cost (33.87%). In addition, the The grade ability performance and maximum speed requirement can also be satisfied. In addition, the
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Abstract: Efficiency of the battery pack largely depends on the resistive losses and heat generation between the interconnections of the battery cells. Grouping of battery cells usually …
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This paper proposes an optimal grouping method for battery packs of electric vehicles (EVs). Based on modeling the vehicle powertrain, analyzing the battery degradation …
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This paper proposes an optimal grouping method for battery packs of electric vehicles (EVs). Based on modeling the vehicle …
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Experimental Combined Grouping Analysis Approach for Robust Battery pack design for Electric Vehicles with Higher Performance Liu Yun1, Li Shui1, Liang Gao2, Zhun …
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To overcome the limitations of a single-type lithium-ion battery pack and achieve complementary advantages, a hybrid battery pack is designed, which consists of two types of …
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The service life, safety, and capacity of lithium-ion power battery packs relies heavily on the consistency among battery cells. Grouping is an effective procedure to improve …
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For the battery pack in an EV, there exist hundreds of cells connected in series, parallel or even more complex topologies. These battery grouping technologies, including the …
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This paper proposes an optimal grouping method for battery packs of electric vehicles (EVs). Based on modeling the vehicle powertrain, analyzing the battery degradation …
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Abstract: The inconsistent characteristics of individual power batteries in a battery pack can seriously affect the performance and service life of the whole pack. Battery grouping …
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Consequently, the overall consistency of the battery pack is compromised, leading to shorter cycle life. Therefore, it is crucial to explore how to use dynamic signal data collected …
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Abstract. Consistence of lithium-ion power battery significantly affects the life and safety of battery modules and packs. To improve the consistence, battery grouping is …
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