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Lithium battery charge saturation equalization circuit, signal generation circuit and its charging circuit

A signal generation circuit and technology of lithium battery packs, applied in charge equalization circuits, battery circuit devices, circuit devices, etc., can solve the problems of low charging and discharging efficiency, easy damage to lithium battery packs, long service life, voltage transformers, and lithium batteries that cannot be adjusted Charge saturation and other issues, to achieve high charge and discharge efficiency, save circuit costs

Active Publication Date: 2021-03-19
ELECTRIC POWER RESEARCH INSTITUTE OF STATE GRID SHANDONG ELECTRIC POWER COMPANY +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0012] In order to solve the above problems, the present invention overcomes the inability to adjust the charging saturation degree of each lithium battery in the lithium battery pack in the charging process of the lithium battery pack in the prior art, the inability to simultaneously output positive and negative voltages, and the charging and discharging efficiency of the lithium battery pack. Low, unsaturated and oversaturated charging will easily damage the service life of the lithium battery pack and the problem that the high-energy high-frequency signal required by the voltage transformer cannot be generated according to the low-energy high-frequency small signal output by the pin of the single-chip microcomputer. A lithium battery pack is provided. Charge Saturation Equalization Circuit, Signal Generating Circuit and Its Charging Circuit

Method used

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  • Lithium battery charge saturation equalization circuit, signal generation circuit and its charging circuit
  • Lithium battery charge saturation equalization circuit, signal generation circuit and its charging circuit
  • Lithium battery charge saturation equalization circuit, signal generation circuit and its charging circuit

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Embodiment 1

[0056] In order to solve the above problems, the present invention overcomes the inability to adjust the charging saturation degree of each lithium battery in the lithium battery pack in the charging process of the lithium battery pack in the prior art, the inability to simultaneously output positive and negative voltages, and the charging and discharging efficiency of the lithium battery pack. Low, unsaturated and oversaturated charging will easily damage the service life of the lithium battery pack and the problem that the high-energy high-frequency signal required by the voltage transformer cannot be generated according to the low-energy high-frequency small signal output by the pin of the single-chip microcomputer. A lithium battery pack is provided. A charging saturation equalization circuit, a signal generating circuit and a charging circuit thereof.

[0057] In order to achieve the above object, the present invention adopts such as a kind of embodiment:

[0058] Such as...

Embodiment 2

[0069] In order to solve the above problems, the present invention overcomes the inability to adjust the charging saturation degree of each lithium battery in the lithium battery pack in the charging process of the lithium battery pack in the prior art, the inability to simultaneously output positive and negative voltages, and the charging and discharging efficiency of the lithium battery pack. Low, unsaturated and oversaturated charging will easily damage the service life of the lithium battery pack and the problem that the high-energy high-frequency signal required by the voltage transformer cannot be generated according to the low-energy high-frequency small signal output by the pin of the single-chip microcomputer. A lithium battery pack is provided. A charging saturation equalization circuit, a signal generating circuit and a charging circuit thereof.

[0070] In order to achieve the above object, the present invention adopts the following embodiment:

[0071] This embodi...

Embodiment 3

[0079] In order to solve the above problems, the present invention overcomes the inability to adjust the charging saturation degree of each lithium battery in the lithium battery pack in the charging process of the lithium battery pack in the prior art, the inability to simultaneously output positive and negative voltages, and the charging and discharging efficiency of the lithium battery pack. Low, unsaturated and oversaturated charging will easily damage the service life of the lithium battery pack and the problem that the high-energy high-frequency signal required by the voltage transformer cannot be generated according to the low-energy high-frequency small signal output by the pin of the single-chip microcomputer. A lithium battery pack is provided. A charging saturation equalization circuit, a signal generating circuit and a charging circuit thereof.

[0080] In order to achieve the above object, the present invention adopts the following embodiment:

[0081] This embodi...

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PUM

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Abstract

The invention discloses a lithium battery pack charging saturation balance circuit, a signal generation circuit and a charging circuit thereof. The charging circuit comprises a power conversion circuit, a charging saturation balancing circuit, a positive and negative voltage output circuit and a signal generating circuit, which are connected in sequence. The power conversion circuit is used for accessing electricity from a mains supply, and 220V alternating current, after voltage reduction of a transformer and rectification of a rectifier bridge, is converted into 25V direct current to be usedfor charging a lithium battery. A lithium battery balancing circuit is used for carrying out charging saturation degree management on each lithium battery in the lithium battery pack in the chargingprocess, so that each lithium battery in the lithium battery pack is fully charged in a saturated mode. After the lithium battery pack is charged, the positive and negative converted by the positive and negative voltage output circuit is output, and the output voltage is used for providing positive and negative voltages for the signal generating circuit, so that the input small signals generated by a single-chip microcomputer are amplified to the specified requirements by the same frequency and are output to a voltage transformer.

Description

technical field [0001] The invention belongs to the technical field of lithium battery pack charging, and in particular relates to a lithium battery pack charging saturation equalization circuit, a signal generating circuit and a charging circuit thereof. Background technique [0002] Most of the existing charging circuits for lithium batteries are ordinary charging circuits, and there are many deficiencies in the charging circuits: [0003] First, when the lithium battery pack is charging, there is no circuit designed to detect whether each lithium battery is fully charged or not, and it is impossible to detect or adjust whether each lithium battery is fully charged or saturated, let alone adjust the lithium battery pack. The charging saturation of each lithium battery in the battery cannot be charged and discharged efficiently, quickly and safely, which not only damages the service life of the lithium battery, but also reduces the effective utilization of energy. [0004]...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H02J7/00
CPCH02J7/0016
Inventor 刘洪正袁海燕姚金霞辜超李秀卫王辉庄燕飞师伟李杰任敬国郑建王斌孙艳迪孙承海张振军刘嵘王建孙景文
Owner ELECTRIC POWER RESEARCH INSTITUTE OF STATE GRID SHANDONG ELECTRIC POWER COMPANY