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Circulation-free optimization control method of reconfigurable battery pack

An optimized control and battery pack technology, which is applied to the arrangement of multiple synchronous batteries, battery parallel conversion, battery circuit devices, etc., can solve the problems of power efficiency and battery life reduction

Active Publication Date: 2020-08-18
GUANGDONG UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] The present invention provides a reconfigurable battery pack no-circulation optimization control method in order to overcome the defects of the battery pack configuration method described in the above prior art that the power efficiency and battery life are reduced

Method used

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  • Circulation-free optimization control method of reconfigurable battery pack
  • Circulation-free optimization control method of reconfigurable battery pack
  • Circulation-free optimization control method of reconfigurable battery pack

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Embodiment 1

[0072] Such as figure 1 As shown, in order to specifically illustrate the battery module applicable to the present invention, this embodiment provides a circuit of a reconfigurable battery pack, and the reconfigurable battery pack circuit includes: a load, several battery packs, respectively denoted as the first A battery pack, a second battery pack...the mth battery pack, the load and the battery pack are all connected in parallel, and each battery pack is connected in parallel, wherein the positive pole of the battery in each battery pack passes through the switch S 1,m Connect to the positive pole of the circuit, the negative pole of the battery passes through the switch S 4,m Connected to the negative pole of the circuit, from the first battery pack to the mth battery pack, the negative pole of the previous battery pack passes through the controllable switch S 3,m-1 Connected to the positive battery of the next battery pack, the positive battery of each second battery pac...

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Abstract

The invention discloses a circulation-free optimization control method of a reconfigurable battery pack. The method comprises the steps of acquiring voltage and current data of all battery modules inthe reconfigurable battery pack at the current moment; calculating the SOC value of the current battery module according to the voltage value and the current value; calculating the number of battery modules required by each series battery branch according to the minimum voltage required by the load and the discharge cut-off voltage of the battery modules; solving an optimal state set of all battery modules in the reconfigurable battery pack by adopting a crisscross optimization algorithm according to a circulation optimization objective function provided by the invention; and calculating the corresponding state of a reconfiguration switch according to the state of the battery of the reconfiguration battery pack, and controlling the connection of the reconfiguration battery pack by taking the corresponding state of the reconfiguration switch as a control signal. According to the invention, circulation between the battery modules is eliminated, the electric energy efficiency is improved,and the service life of the battery is prolonged.

Description

technical field [0001] The present invention relates to the field of battery technology, and more specifically, to a non-circulating current optimal control method of a reconfigurable battery pack. Background technique [0002] Battery packs are widely used in scenarios such as electric vehicles and energy storage power supplies. Due to the differences among the battery modules, the performance of the battery packs connected in series and parallel in a fixed manner depends on the worst battery module among them, which is easy to cause overcharging or overdischarging during use. Therefore, some scholars have proposed a reconfigurable battery pack to solve this problem. [0003] The traditional control method of reconfigurable battery packs is based on the principle of "capable people do more work", that is, when the battery pack is discharged externally, some battery modules with higher State-of-Charge (SOC) are selected first. , according to the circuit topology, these bat...

Claims

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Application Information

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IPC IPC(8): H02J7/00H02J7/34
CPCH02J7/0024H02J7/0063H02J7/342
Inventor 陈思哲王玉乐张桂东孟安波章云
Owner GUANGDONG UNIV OF TECH
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