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An anti-overcharge device applied to s4r circuit

An anti-overcharge and circuit technology, which is applied in the direction of circuit devices, battery circuit devices, charge equalization circuits, etc., can solve problems such as shortening lifespan, achieve the effects of reducing area, preventing overvoltage, and reducing research and development costs

Active Publication Date: 2019-05-28
SHANGHAI INST OF SPACE POWER SOURCES
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Overvoltage use of lithium batteries will not only shorten its life, but also pose serious safety hazards

Method used

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  • An anti-overcharge device applied to s4r circuit

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Embodiment Construction

[0013] In order to describe the technical content of the present invention in detail, the present invention will be described in detail below in conjunction with the accompanying drawings and the accompanying drawings.

[0014] Such as figure 1 As shown, the anti-overcharge device applied to S4R type circuits of the present invention is characterized in that it includes: S4R charging module, discharge regulation module, equalization module and lower computer module;

[0015] The S4R charging module is responsible for adjusting the output of the solar cell array, providing the primary bus and charging the battery, and the overvoltage parameter finally controls the power charging circuit of the S4R.

[0016] The discharge regulation module is responsible for participating in the regulation of battery discharge.

[0017] The balance module adjusts the voltage difference between the cells of the battery through the balance control circuit. The circuit collects the voltage of all ...

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Abstract

The invention discloses an overcharge protection device applied to an S4R-type circuit. The overcharge protection device comprises an S4R charge module, a discharge adjusting module, a balance module and a lower computer module, wherein the S4R charge module carries out voltage control of a whole lithium battery pack, maximal voltage control of single lithium batteries and overcharge current control; meanwhile, the charge states of the lithium batteries are monitored and controlled; control parameters can be changed through the lower computer module; a BOOST mode is adopted by the discharge adjusting module; meanwhile, the discharge adjusting module comprises a busbar voltage overvoltage and undervoltage protection circuit and an output current limiting protection circuit; the balance module provides sampling and power-balancing loops and logic control interfaces of the single lithium batteries and prevents overvoltage of the single lithium batteries; logic control of the balance module is achieved through the lower computer module; the lower computer module comprises a lithium battery temperature control module and a lithium battery charge and discharge management module; and an input signal required by a lower computer is provided by an analogue collection module.

Description

technical field [0001] The invention is applied to the field of power controllers for spacecraft such as satellites and space stations, and in particular relates to an overcharge prevention device applied to S4R circuits. Background technique [0002] The in-orbit use of lithium batteries is a comprehensive consideration. Temperature, discharge depth, working current, charging method, etc. will all affect it. Overvoltage use of lithium batteries will not only shorten its life, but also pose serious safety hazards. [0003] At present, the overvoltage control parameters of lithium batteries in different orbits and operating environments are different, and it is necessary to tailor a suitable control method for the battery in combination with specific working conditions. [0004] In view of the above reasons, a new anti-overvoltage control device is needed, aiming at the different lifespan and orbital conditions of the lithium-ion batteries used in domestic low-orbit small s...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H02J7/00
CPCH02J7/0014H02J7/0026H02J7/0068
Inventor 焦宇晟郭形发覃思明杨华徐军
Owner SHANGHAI INST OF SPACE POWER SOURCES
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