Chargeable cell energy feedback detection device being capable of series connection and parallel connection

An energy feedback type and detection device technology, which is applied to battery circuit devices, measurement devices, circuit devices, etc., can solve problems such as energy waste, loss of manufacturers, and idle equipment

CN105005003AInactive Publication Date: 2015-10-28ZAOZHUANG JINWANTONG ELECTRONICS PROD CO LTD
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
Publication Date
2015-10-28
Estimated Expiration
Not applicable · inactive patent

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Abstract

The invention provides a chargeable cell energy feedback detection device being capable of series connection and parallel connection, and aims to provide a voltage and current detection circuit used for an energy feedback chargeable cell being capable of series connection and parallel connection. The technical scheme is as follows: the detection device comprises a monitoring host, a one-chip microcomputer, a PWM rectification / inversion circuit and a series-parallel control module. The monitoring host is connected with the one-chip microcomputer through an RS485 communication module. The series-parallel control module is connected with the one-chip microcomputer through a D / A conversion module and a series-parallel controller. Current and voltage signals collected by the series-parallel control module are sent to the one-chip microcomputer via an A / D conversion module. The series-parallel control module is connected with the power grid through the PWM rectification / inversion circuit. The device has beneficial effects that a chargeable cell detection circuit system can be simplified, the system stability is raised, an impact current to charging and discharging of the chargeable cell is eliminated, and the system is controlled by an upper host and the one-chip microcomputer.
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Description

technical field

[0001] The invention relates to a detection device which is used for series and parallel connection of rechargeable battery detection circuits and can realize energy feedback. Background technique

[0002] At present, with the increasing shortage of renewable energy in the world, rechargeable batteries are attracting more and more attention as a kind of clean energy. Growing. Strict regulations on carbon emissions by the governments of countries and regions such as Europe, North America, and China are also driving the market. The development of the rechargeable battery industry further drives the development of rechargeable battery testing equipment, and promotes the improvement of matching testing methods, standards and equipment development.

[0003] The traditional rechargeable battery detection circuit system is complex and bulky, which increases the cost virtually, and has poor stability and large inrush current, which can cause incalculable damage...

Examples

Embodiment

[0017] The present invention will be further elaborated below with reference to the accompanying drawings.

[0018] The rechargeable battery energy feedback module designed by the present invention adopts a single-phase PWM rectification / inversion circuit, and its principle diagram is as follows figure 1 shown. Its working principle is: by controlling the switching tubes VD1, VD2, VD3 and VD4, a sine modulation wave Uab can be generated at the AC input end of the rectifier bridge. Uab does not contain low-order harmonic components, but only contains fundamental wave components with the same frequency and amplitude proportional to the sinusoidal signal wave and high-frequency harmonics related to the triangular carrier wave. Due to the filtering effect of the inductance Ls, these high-order harmonic voltages will only cause small ripples in the AC current Is. When the AC power supply voltage is constant, the amplitude and phase of Is are determined by the amplitude of the fun...