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Battery charging and discharging circuit

A charging and discharging circuit, charging and discharging technology, applied in battery circuit devices, charge equalization circuits, electric vehicle charging technology, etc., to achieve the effect of reducing costs, reducing the cost of charging facilities, and reducing maintenance costs

Pending Publication Date: 2019-10-29
HONG KONG PRODUCTIVITY COUNCIL
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In practical applications, it is often necessary to use two voltages, and there is no circuit and algorithm in the prior art that can simultaneously charge and discharge two voltages at the same time

Method used

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  • Battery charging and discharging circuit
  • Battery charging and discharging circuit
  • Battery charging and discharging circuit

Examples

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Embodiment Construction

[0021] The present invention will be further described below in conjunction with the accompanying drawings and specific embodiments, so that those skilled in the art can better understand the present invention and implement it, but the examples given are not intended to limit the present invention.

[0022] like figure 1 , figure 2 , image 3 , Figure 4 , Figure 5 As shown, a battery charging and discharging circuit includes a rechargeable battery pack 1, an auxiliary battery 2, a DC voltage regulator conversion circuit 3, an operation display system 4, a main control circuit board 5, a bidirectional voltage control module system Q, a first charging Discharge balance control system IC1, second charge and discharge balance control system IC2, battery pack monitoring system IC15, logic control system IC17 and isolated adjustable power supply system IC16, these systems are made into integrated circuit circuit boards, and when charging the battery, the It is connected to th...

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PUM

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Abstract

The invention discloses a battery charging and discharging circuit, in particular to a battery charging and discharging circuit capable of voltage conversion and active voltage balance. The battery charging and discharging circuit comprises a chargeable and dischargeable battery pack, an auxiliary battery, a direct current voltage-stabilizing conversion circuit, an operation display system, a maincontrol circuit board, a battery pack monitoring system, a logic control system, an isolated adjustable power supply system, a first charging and discharging balance control system, a second chargingand discharging balance control system and a bidirectional voltage control module system, and a battery pack charging and discharging device is manufactured by an integrated circuit. A general electric vehicle battery is formed by connecting a plurality of single batteries in series, the device achieves the quality detection and charging and discharging for the single batteries through a human-computer interface under the software control in a computer or a microcontroller by connecting the main control circuit board and the single batteries in the battery pack to achieve the purposes of theactive battery balance charging and discharge and the simultaneous charging and discharging of more than two voltages so as to reduce the cost of the electric vehicle charging device and the maintenance cost of the battery pack.

Description

technical field [0001] The invention relates to a battery charge and discharge circuit, in particular to a battery charge and discharge circuit capable of voltage conversion and active voltage balance. Background technique [0002] In real life, rechargeable and dischargeable batteries are more and more widely used, some of which are composed of multiple low-voltage single cells connected in series to form a rechargeable and dischargeable battery pack, such as one hundred 4.2 volt Lithium batteries can form a 420V battery pack for high-power electric vehicles. General electric vehicles can range from 12V to 600V according to different power levels and implementation standards, but they are basically composed of single cells. The types of materials are different, and can be from 1.2V to 4.2V. In order to avoid the charging and discharging process of the entire battery pack being affected by the voltage state of individual cells being too high or too low, it is necessary to pr...

Claims

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Application Information

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IPC IPC(8): H02J7/00B60L58/20B60L58/22B60L53/00
CPCH02J7/0013H02J7/0014H02J7/0068B60L58/20B60L58/22B60L53/00Y02T10/70Y02T90/14Y02T10/7072
Inventor 潘志健叶永丰黄毓琛伍启荣叶卓铭
Owner HONG KONG PRODUCTIVITY COUNCIL
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