The equalization strategy is embedded in a real BMS for practical application analysis. Lithium-ion battery pack capacity directly determines the driving range and dynamic ability of electric vehicles (EVs). However, inconsistency issues occur and decrease the pack capacity due to internal and external reasons.
A layered battery equalization method is proposed, which reduces the calculation difficulty of the equalization current by layered equalization of the batteries in the group and calculates the equalization current in real-time according to the state of the batteries in the group.
Equalization is defined as the least square sum of the battery pack’s SOC and its average SOC being less than 0.01, and the equalization time is defined as the time from start to end of equalization. The specific simulation parameters are shown in Table 3 and Table 4. Figure 3. External current for the battery pack. Table 3.
Finally, the results of simulation and experiment both show that the equalization strategy not only maximizes pack capacity, but also adapts to different consistency scenarios. Pack capacity and consistency in the fresh or aged state are significantly improved after battery equalization.
Then, the equalization effect is verified by building an experimental platform. The experimental results show that the proposed equalization method can effectively decrease the consistency difference of the battery pack, thus increasing the energy utilization and cycle life of the battery pack.
where represents the SOC of the ith battery, the battery pack has 2 n batteries in total, . To improve the equilibrium efficiency, the objective function (11) can be minimized to design a control strategy that satisfies the constraints. The transformed function is: subject to
An active equalization method for series-parallel battery pack …
The experimental results show that the proposed equalization method can effectively decrease the consistency difference of the battery pack, thus increasing the energy utilization and cycle life of the battery pack. The future research mainly focuses on: when the number of cells increases in the battery pack, how to use the proposed topology to ...
Learn More
Active Methods for the Equalization of a Serially …
An active equalization method based on an inductor and a capacitor was proposed in Reference by combining the advantages of the fast equalization speed of capacitor energy storage and the high equalization …
Learn More
Lithium-ion battery pack equalization based on charging …
Lithium-ion battery pack capacity directly determines the driving range and dynamic ability of electric vehicles (EVs). However, inconsistency issues occur and decrease the pack capacity due to internal and external reasons. In this paper, an equalization strategy is proposed to solve the inconsistency issues. The difference of inconsistency ...
Learn More
Bi-Directional Cuk Equalizer-Based Li-Ion Battery Pack Equalization ...
For the secure usage of battery charging and discharging within electric vehicles, the study of cell pack equalization technology is essential. Therefore, in this paper, an improved Bidirectional Cuk equalizer (BCEQ) structure based on a variable-domain fuzzy PID (VFPID) control equalization strategy is recommended in stages. With the new ...
Learn More
Adaptive Equalization Method of Lithium Battery Module Based …
1 · In order to improve the balancing rate of lithium battery pack systems, a fuzzy control balancing scheme based on PSO optimized SOC and voltage membership function is …
Learn More
Lithium-ion battery pack equalization based on charging voltage …
Lithium-ion battery pack capacity directly determines the driving range and dynamic ability of electric vehicles (EVs). However, inconsistency issues occur and decrease …
Learn More
(PDF) Lithium-ion battery pack equalization based on charging …
This paper presents a battery charge equalization algorithm for lithium-ion battery in EV applications to enhance the battery''s performance, life cycle and safety. The algorithm is …
Learn More
How to equalization charge Lithium ion battery …
Battery Equalization charge has the function of equalizing the voltage of the lithium-ion battery pack, so as to achieve the full charge and full discharge of the battery pack capacity, so that the battery pack can exert its …
Learn More
Adaptive Equalization Method of Lithium Battery Module Based …
1 · In order to improve the balancing rate of lithium battery pack systems, a fuzzy control balancing scheme based on PSO optimized SOC and voltage membership function is proposed. Firstly, the underlying balancing circuit is composed of buck-boost circuits and adopts a layered balancing strategy; Secondly, using the states of different battery remaining capacities (SOC) …
Learn More
(PDF) Lithium-ion battery pack equalization based on charging …
This paper presents a battery charge equalization algorithm for lithium-ion battery in EV applications to enhance the battery''s performance, life cycle and safety. The algorithm is implemented in series connected battery cells of 15.5 Ah and 3.7 V nominal each using a battery monitoring integrated circuit for monitoring and equalization of an 8 ...
Learn More
Bi-Directional Cuk Equalizer-Based Li-Ion Battery Pack …
For the secure usage of battery charging and discharging within electric vehicles, the study of cell pack equalization technology is essential. Therefore, in this paper, an improved Bidirectional Cuk equalizer (BCEQ) …
Learn More
Active Methods for the Equalization of a Serially Connected Lithium …
An active equalization method based on an inductor and a capacitor was proposed in Reference by combining the advantages of the fast equalization speed of capacitor energy storage and the high equalization accuracy of inductor energy storage, which significantly improves the battery pack''s consistency as a result, and thus the battery pack ...
Learn More
Active equalization for lithium-ion battery pack via data-driven ...
Efficient and fast active equalization method for retired battery pack using wide voltage range bidirectional converter and DBSCAN clustering algorithm
Learn More
An active equalization method for series-parallel battery pack …
The experimental results show that the proposed equalization method can effectively decrease the consistency difference of the battery pack, thus increasing the energy …
Learn More
: ,。 ,,,；,Buck-Boost。...
Learn More
Research on Equalization Strategy of Lithium Battery Pack …
The model aims to optimize the equalization current and ensure that the battery current is within safe range, and ultimately achieve the goal of reducing excessive battery heating and realizing safe, fast charging and discharging of the battery pack. The following are the main contributions of this study:
Learn More
How to equalization charge Lithium ion battery pack（Cell …
Battery Equalization charge has the function of equalizing the voltage of the lithium-ion battery pack, so as to achieve the full charge and full discharge of the battery pack capacity, so that the battery pack can exert its maximum effect.
Learn More
Research on Equalization Strategy of Lithium Battery Pack Based …
The model aims to optimize the equalization current and ensure that the battery current is within safe range, and ultimately achieve the goal of reducing excessive battery …
Learn More
: ,。 , …
Learn More
