Low-voltage BMS dormancy and awakening power supply control device

A power control device, low-voltage technology, applied in circuit devices, battery circuit devices, current collectors, etc., can solve the problems of reducing battery pack maintenance costs, over-discharge, etc., achieving novel structure, reducing maintenance costs, and solving the effects of over-discharge

Pending Publication Date: 2020-06-23
东莞市峰谷科技有限公司
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  • Abstract
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Problems solved by technology

[0004] The present invention provides a low-voltage BMS dormancy and wake-up power supply control device for the problems in the prior art. It has a novel structure and solves the problem of over-discharge caused by long-term storage of the battery pack in a reliable and low-cost manner; Under the condition of not dismantling the chassis, it can wake up and charge normally, which greatly reduces the maintenance cost of the battery pack

Method used

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  • Low-voltage BMS dormancy and awakening power supply control device
  • Low-voltage BMS dormancy and awakening power supply control device
  • Low-voltage BMS dormancy and awakening power supply control device

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Embodiment Construction

[0025] In order to facilitate the understanding of those skilled in the art, the present invention will be further described below in conjunction with the embodiments and accompanying drawings, and the contents mentioned in the embodiments are not intended to limit the present invention. The present invention will be described in detail below in conjunction with the accompanying drawings.

[0026] A low-voltage BMS dormancy and wake-up power supply control device, such as Figure 1 to Figure 5 As shown, it includes a switching element, a first step-down module 1, a second step-down module 2, a delay shutdown module 3, a linear step-down module LDO4, a power switching module 5, an external voltage detection module 6 and a microcontroller MCU7;

[0027] The external battery pack is respectively connected to the input end of the first step-down module 1 and the input end of the second step-down module 2 through the switch, and the output end of the second step-down module 2 is re...

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Abstract

The invention relates to the technical field of battery management systems, in particular to a low-voltage BMS sleep and wake-up power supply control device. The low-voltage BMS sleep and wake-up power supply control device comprises a switching element, a first voltage reduction module, a second voltage reduction module, a delay turn-off module, a linear voltage reduction module LDO, a power supply switching module, an external voltage detection module and a microcontroller MCU. The device is novel in structure, a dual-power-supply power supply mode is adopted, meanwhile, an external power supply mode is supported, and the low-power-consumption sleep function of the BMS is achieved; an external power supply awakening mode is adopted, so that normal awakening charging can be realized underthe condition that the voltage is lower than the lowest working voltage of the BMS auxiliary power supply; the problem of overdischarge caused by long-term shelving of the battery pack is solved in areliable and low-cost manner; and even if the battery pack is over-discharged, charging can be normally awakened under the condition that the case is not disassembled, so that the maintenance cost ofthe battery pack is greatly reduced.

Description

technical field [0001] The invention relates to the technical field of battery management systems, in particular to a low-voltage BMS sleep and wake-up power supply control device. Background technique [0002] As a key component of the battery energy storage system, the battery management system (BMS) can take power from the battery pack or from an external power source, such as mains power. For off-grid and semi-off-grid system applications, the instability of the external power supply cannot guarantee the normal operation of the BMS, so the BMS usually takes power from the battery pack to meet the needs of independent operation. [0003] The energy of the battery pack itself is limited. To obtain power from the battery pack, the BMS must meet the low power consumption during normal operation, and also have the requirements for sleep and wake-up functions. This can not only ensure that the battery pack will not be over-discharged, but also ensure that the battery pack can...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02J7/00
Inventor 姚敦平熊细旺郑岳军
Owner 东莞市峰谷科技有限公司
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