Bidirectional charging/discharging device and method for accumulator
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A charging and discharging device and storage battery technology, applied in battery circuit devices, secondary battery charging/discharging, circuit devices, etc., can solve problems such as complex circuits and inability to flow in both directions, and achieve the effects of reducing heat generation and prolonging service life
Pending Publication Date: 2017-11-21
SHANGHAI HUGE INTELLIGENT TECH
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[0002] The DC converter in the prior art is a power supply that converts DC power into DC power, but it can only realize step-up or step-down, and cannot flow in both directions.
If two-way flow is to be realized, the existing technology needs to use two sets of circuits, and the circuit is complicated
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[0019] The present invention will be further described below in conjunction with the accompanying drawings and embodiments.
[0020] Such as figure 1 所示,本实施例提供了一种蓄电池双向充放电装置,包括蓄电池BT1,实际负载DS1,还包括一控制器U1,所述U1的输出端连接至一转换开关S1的静触头,所述转换开关S1的两个动触头分别连接至充电开关管Q1的控制端、放电开关管Q2的控制端,所述充电开关管Q1的源极与所述放电开关管Q2的漏极相连,所述充电开关管Q1的漏极与源极之间并接有第一续流二极管D1,所述放电开关管Q2的漏极与源极之间并接有第二续流二极管D2,所述第一二极管D1的阳极、第二二极管D2的阴极相连并连接至一电感L1的一端,所述电感L1的另一端与所述蓄电池BT1的正端相连,所述电感L1的另一端经常闭接触器K1连接至母线正极,所述电感L1的另一端连接至第三续流二极管D3的阳极,所述第三续流二极管D3的阴极与所述实际负载DS1的一端均连接至母线正极,所述实际负载DS1的另一端与所述蓄电池BT1的负端相连,所述实际负载DS1的两端并接有一充电机;所述充电开关管Q1的漏极、第一续流二极管D1的阴极均连接至母线正极,所述放电开关管Q2的源极、所述第二续流二极管D2的阳极、所述蓄电池BT1的负端、所述实际负载DS1的另一端均连接至母线负极;所述蓄电池BT1连接有一电池电流传感器。
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Abstract
The invention relates to a bidirectional charging/discharging device and a bidirectional charging/discharging method for an accumulator. The device comprises a controller, a change-over switch, a charging/discharging switch tube, a discharging switch tube, a first freewheel diode, a second freewheel diode, a normally-closed contactor, a third freewheel diode, the accumulator, an actual load, a charger and a battery current sensor. According to the device and the method provided by the invention, bidirectional DC/DC can be achieved under the premise of only using a set of circuits.
Description
technical field [0001] 本发明涉及蓄电池充放电领域,特别是一种蓄电池双向充放电装置及方法。 Background technique [0002] 现有技术中的直流转换器是把直流电转换成直流电的一种电源,但是其只能单纯实现升压或者单纯实现降压,不能双向流动。如果要实现双向流动,现有技术需要采用两套电路,线路复杂。 Contents of the invention [0003] 有鉴于此,本发明的目的是提出一种蓄电池双向充放电装置及方法,可以在只采用一套电路的前提下实现双向DC / DC。 [0004] 本发明的采用以下方案实现:一种蓄电池双向充放电装置,包括蓄电池BT1,实际负载DS1,还包括一控制器U1,所述U1的输出端连接至一转换开关S1的静触头,所述转换开关S1的两个动触头分别连接至充电开关管Q1的控制端、放电开关管Q2的控制端,所述充电开关管Q1的源极与所述放电开关管Q2的漏极相连,所述充电开关管Q1的漏极与源极之间并接有第一续流二极管D1,所述放电开关管Q2的漏极与源极之间并接有第二续流二极管D2,所述第一二极管D1的阳极、第二二极管D2的阴极相连并连接至一电感L1的一端,所述电感L1的另一端与所述蓄电池BT1的正端相连,所述电感L1的另一端经常闭接触器K1连接至母线正极,所述电感L1的另一端连接至第三续流二极管D3的阳极,所述第三续流二极管D3的阴极与所述实际负载DS1的一端均连接至母线正极,所述实际负载DS1的另一端与所述蓄电池BT1的负端相连,所述实际负载DS1的两端并接有一充电机;所述充电开关管Q1的漏极、第一续流二极管D1的阴极均连接至母线正极,所述放电开关管Q2的源极、所述第二续流二极管D2的阳极、所述蓄电池BT1的负端、所述实际负载DS1的另一端均连接至母线负极;所述蓄电池BT1连接有一电池电流传感器。 [0005] 进一步地,所述转换开关S1经一隔离驱动模块U2连接至所述充电开关管Q1的控制端。 [0006] 进一步地,还包括第一驱动负载R1以及第二驱动负载R2,所述第一驱动负载R1并接在充电开关管Q1的栅极与源极之间,所述第二驱动负载R2并接在放电开关管Q2的栅极与源极之间。 [0007] 进一步地,所述转换开关S1采用电子自锁或机械自锁的方式,用以避免所述充电开...
Claims
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