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A device and method for quickly eliminating battery charging and discharging polarization

A technology for charging and discharging batteries, which is applied in battery circuit devices, secondary battery charging/discharging, circuit devices, etc., and can solve problems such as difficult battery polarization and inability to ensure the consistency of open circuit voltage of single batteries

Active Publication Date: 2020-07-03
HARBIN UNIV OF SCI & TECH
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Problems solved by technology

[0006] The present invention is to solve the problem that it is difficult to quickly eliminate the polarization of the battery and the consistency of the open circuit voltage of the single battery cannot be guaranteed in the process of large-scale production of the battery. Now it provides a device and method for quickly eliminating the polarization of the battery charge and discharge

Method used

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  • A device and method for quickly eliminating battery charging and discharging polarization

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specific Embodiment approach 1

[0017] Specific implementation mode one: refer to figure 1 This embodiment is specifically described. In this embodiment, two 18650 type lithium iron phosphate 1,5Ah / 3.2V single cells with different polarization degrees are used.

[0018] The controller K adopts a digital signal processor DSP, which is composed of large-scale or ultra-large-scale integrated circuit chips and is used to complete signal processing tasks. In order to realize the fast calculation function, the digital signal processor adopts the TMS320F2812DSP application system board, and the TMS320F2812DSP application system board has a digital-to-analog converter and an analog-to-digital converter, so it is a preferred signal processing device. This embodiment can also use other devices with signal processing functions, such as industrial control machines, programmable logic controllers, and other series of single-chip embedded systems.

[0019] The voltage detector is a voltage detection device, and its task ...

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Abstract

The invention relates to elimination of polarization caused by battery charge and discharge, in particular to a device and method for quickly eliminating battery charge-discharge polarization and aimsto solve problems of difficulty in quick elimination of battery polarization and failure in guarantee of open-circuit voltage uniformity of battery cells. Each battery positive electrode is connectedwith a positive terminal of a bidirectional power amplifier through a current-limiting resistor, each battery negative electrode is connected with a negative terminal of the bidirectional power amplifier, a voltage detector is used for detecting parallel voltage of n batteries and sending a voltage value to a controller, a driving signal output end of the controller is connected with a driving signal input end of a signal generator, and alternating signals generated by the signal generator enable charge or discharge of each battery through the bidirectional power amplifier. By adoption of thebidirectional power amplifier for outputting attenuated sine waves, continuous positive-reverse charge polarization and discharge polarization of batteries are realized, and accordingly battery polarization is eliminated.

Description

technical field [0001] The invention belongs to the field of batteries, and in particular relates to the elimination of polarization phenomenon caused by charging and discharging of batteries. Background technique [0002] At present, batteries are more and more widely used in various fields such as mobile communications, electric vehicles, and energy storage, covering almost all fields of our life, production, and scientific research. Especially in recent years, with the rapid development of new energy vehicles at home and abroad, the demand for batteries is increasing, and the performance requirements of batteries are also getting higher and higher. In the case of large-scale application of batteries, it is usually necessary to connect multiple single cells in series and parallel to form a battery module. The consistency of the single cells directly affects the performance of the battery module, and even directly affects the safety and service life of the battery. [0003...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01M10/42H01M10/44H02J7/00
CPCH01M10/4285H01M10/44H02J7/0013H02J2207/20Y02E60/10
Inventor 李然姚杰
Owner HARBIN UNIV OF SCI & TECH
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