Method for ontrack deep discharging of cadmium-nickle storage batteries
A deep discharge and storage battery technology, applied in the direction of secondary battery charging/discharging, secondary battery repair/maintenance, etc., to prevent damage and improve service life
Active Publication Date: 2015-02-11
BEIJING INST OF SPACECRAFT SYST ENG
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Problems solved by technology
[0004] The technical problem of the present invention is: to overcome the problem that the existing V-T curve control method is difficult to realize the on-orbit activation of the nickel-cadmium storage battery by deep discharge, and to provide a method for the nickel-cadmium storage battery on-orbit deep discharge based on fuel gauge control , the depth of discharge can be adjusted, suitable for various nickel-cadmium batteries used in spacecraft controlled by fuel gauges, effectively improving the service life of nickel-cadmium batteries on orbit
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[0026] The method of the present invention is realized by two sub-modules of the on-board central computer respectively. The sub-module 1 is located in the remote control instruction receiving module of the fuel gauge, and is used to realize the assignment of ΔQ to ΔQ1; In the instruction module, it is used to assign ΔQ to ΔQ2 and restore ΔQ2 to 0. Here, the processing objects include battery A and battery B. It should be noted that the sub-module 2 is applicable to both battery A and battery B.
[0027] The steps for sub-module 1 are described as follows:
[0028] (1) In the electricity meter remote control instruction receiving module, enter step (2) when it is judged that the instruction type is injection ΔQ, and continue to judge other instruction types when it is not this type;
[0029] (2) It is further judged that when the instruction is an injection ΔQ instruction for the battery pack A, enter step (3), otherwise enter step (6);
[0030] (3) When the current ΔQ of ba...
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The invention discloses a method for ontrack deep discharging of cadmium-nickle storage batteries, wherein during the controlling of the charging and discharging of cadmium-nickle storage batteries, the charging of cadmium-nickle storage batteries can be stopped in the situation of underfilling through setting conditions(owing Delta Q); after cadmium-nickle storage batteries are transferred to the discharging mode, as the amount of discharging does not change, the discharging depth of cadmium-nickle storage batteries is increased; and in the next charging process, conditions are set again for cadmium-nickle storage batteries to charge more Delta Q so as to make up the amount owing, and then the deep discharging is finished. The method disclosed by the invention overcomes the problem that the existing V-T curve control method is hard to carry out ontrack activation on the spacecraft cadmium-nickle storage batteries by adopting deep discharging, and the discharging depth can be adjusted. The method is suitable for various cadmium-nickle storage batteries for spacecraft, which is controlled by adopting a volt-ammeter, and the ontrack service life of cadmium-nickle storage batteries is efficiently prolonged.
Description
technical field [0001] The invention relates to a discharge method for a nickel-cadmium storage battery, which can effectively improve the output capacity of the nickel-cadmium storage battery at the end of its service life, thereby prolonging its service life on spacecraft. Background technique [0002] Deep discharge is an effective method for on-orbit activation of nickel-cadmium batteries for spacecraft to improve the output capacity at the end of life and prolong the service life of nickel-cadmium batteries. But its operation has certain difficulty, also has certain risk at the same time. [0003] At present, the V-T curve control method is mainly used in the charge and discharge control of the nickel-cadmium battery. When this method is used for the charge and discharge control, only the ground personnel can calculate the charge and discharge power. Due to the low frequency of current telemetry and the many modes of load current change, and overseas parameters cannot ...
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IPC IPC(8): H01M10/44
CPCY02E60/10
Inventor 郭坚陈燕高升穆强张红军付连芳范大亮闫春香
Owner BEIJING INST OF SPACECRAFT SYST ENG