The invention discloses a novel low-cost multi-mode constant excitation current battery equalizer, which is characterized in that each lithium battery pack needing an equalization function in lithium battery packs is connected with an equalization circuit, and the equalization circuit comprises two groups of MOS (Metal Oxide Semiconductor) tubes in one-to-one correspondence with single lithium battery units, a current-limiting resistor R and a transformer winding T; the lithium battery pack can be divided into odd-number groups and even-number groups, the odd-number groups of switches are driven by PWM +, the even-number groups of switches are driven by PWM-, and the two groups of switches are switched on alternately. The invention belongs to the technical field of battery equalizers, particularly relates to a novel low-cost multi-mode constant excitation current battery equalizer, solves the problems of high circuit cost, extremely low energy transmission power and too slow equalization rate in the prior art, and provides a battery equalizer which is low in cost, flexible and adjustable in current control range and high in equalization efficiency. The stability of the equalization speed is greatly improved, and the multi-mode control battery energy exchange of the battery equalizer is realized.
本发明公开了一种新型的低成本多模式恒励磁电流电池均衡器,锂电池组中需进行均衡功能的每个锂电池组与一个均衡电路连接,均衡电路包括两组与单节锂电池单元一一对应的MOS管、限流电阻R以及一个变压器绕组T构成;锂电池组可分为奇数组和偶数组,奇数组开关由PWM+驱动,偶数组开关由PWM‑驱动,两组开关交替开通。本发明属于电池均衡器技术领域,具体是一种新型的低成本多模式恒励磁电流电池均衡器,解决了现有技术中电路成本高,能量传输功率极低,均衡速率过慢的情况,提供了一种低成本,灵活可调电流控制范围,大大地提升了均衡速度的稳定性,实现多模态控制电池能量交换的电池均衡器。
Novel low-cost multi-mode constant excitation current battery equalizer
一种新型的低成本多模式恒励磁电流电池均衡器
2024-02-09
Patent
Electronic Resource
Chinese
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