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Charging device with stress stored by charging that is initiated by externally applied force, and that being eventually released by heat due to charging saturation

a charging device and stress storage technology, applied in the direction of batteries, nickel accumulators, primary cell maintenance/servicing, etc., can solve the problem of completely cutting off the charging of the secondary cell

Inactive Publication Date: 2009-12-22
YANG TAI HER
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Benefits of technology

[0004]FIG. 1 shows a first embodiment of the invention in which in which the temperature sensor is executed in the form of a thermo-resetting flip-flop metal spring interposed between the secondary cell and the charging assembly;
[0005]FIG. 2 is a circuit diagram for the embodiment of FIG. 1;

Problems solved by technology

When the secondary cell reaches saturation, heat will intervene to release the prestressed state, causing the conductive contacts on both the secondary cell set and the charging assembly to be pushed apart, causing charging of the secondary cell to be cut off altogether.

Method used

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  • Charging device with stress stored by charging that is initiated by externally applied force, and that being eventually released by heat due to charging saturation
  • Charging device with stress stored by charging that is initiated by externally applied force, and that being eventually released by heat due to charging saturation
  • Charging device with stress stored by charging that is initiated by externally applied force, and that being eventually released by heat due to charging saturation

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Effect test

first embodiment

[0054]the invention in which the temperature sensor is in the form of a thermo-resetting flip-flop binary metal spring interposed between the secondary cell set and the charging assembly is illustrated in FIG. 1. When the secondary cell set H102 and the charging assembly H101 are coupled together, the force of union occasioned thereby will compel the thermo-resetting flip-flop binary metal spring TH201 to revert to a pre-stressed state so that contacts P102, P106 on the secondary cell set H102 and contacts P101, P105 on the charging assembly H101 are brought into conductive engagement, thereby enabling the charging power from the charging assembly H101 to charge the secondary cell set H102. When charging of the secondary cell B101 reaches its saturation, accompanied by a rising of temperature to a predetermined level, the thermo-resetting flip-flop, i.e., bistable, binary metal spring TH201 interposed between the secondary cell set H102 and the charging assembly H101 will reset ther...

second embodiment

[0060]the invention is illustrated in FIG. 3, which is in fact a modification of the embodiment of FIG. 1. In this embodiment, an auxiliary contact P100 is added to the charging assembly H101, to release the prestress stored in the thermo-resetting flip-flop binary metal spring TH201 when it is reset by the heat which results from a rise in temperature as charging of the secondary cell B101 reaches saturation, so as to release the coupling of contacts on both the secondary cell set and the charging assembly so that charging current to the secondary cell B101 is blocked forthwith even though conduction is still maintained way between the contacts P101 on the charging assembly H101 and contacts P102 on the secondary cell set H102. As a result of the addition of an auxiliary contact P100 which is in series with a current limiting resistor R101 with the power supply, conduction is made with the contact P106 on the secondary cell set H102, thereby maintaining a small charging current fro...

third embodiment

[0061]A circuit diagram of the embodiment of FIG. 3 is given in FIG. 4.[0062]third embodiment of the invention in which the temperature sensor is executed in the form of a thermo-resetting binary flip-flop metal spring between the secondary cell and the charging assembly is illustrated in FIG. 5. When the secondary cell set H102 and the charging assembly H101 are coupled together, the force of union occasioned thereby will compel the thermo-resetting flip-flop binary metal spring TH201 to revert to a pre-stressed state so that contacts P102, P016 on the secondary cell set H102 and contacts P101, P105 on the charging assembly H101 are brought conductively altogether, thereby enabling the charging power from the charging assembly H101 to charge the secondary cell set H102. When charging of the secondary cell B101 reaches saturation due to a rise in temperature to a predetermined level, the thermo-resetting flip-flop binary metal spring TH201 interposed between the secondary cell set a...

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Abstract

A secondary cell featuring a transient rise in temperature once charged to saturation is coupled and thereby forms a composite structure with a charging assembly by mutual engagement of conductive contacts provided on either part. The force of union generated by the coupling compresses a thermosetting prestressed means which is a spring or other prestressed element the coupling brings the contacts into conduction to initiate charging. The stress is released once charging in the secondary cell reaches its saturation, followed by cutoff of the charging current to the secondary cell.

Description

[0001]This application is a Continuation nonprovisional application Ser. No. 10 / 260 / 283 filed Oct. 1, 2002, now abandoned.BACKGROUND OF THE INVENTION[0002]Due to the booming development in hand-held or portable electric appliances or utilities, secondary rechargeable batteries or cells are finding ever more extensive applications from day to day. The present invention relates to a charging assembly and a secondary battery set, such as, for example, a nickel / cadmium, a nickel / hydrogen, a nickel / zinc, or a ferrous nickel cell, to be mounted in and matched with the charging assembly, the charging assembly and secondary battery set being furnished with conductive contacts to facilitate transfer of electric power from the charging assembly to the second battery set. The conductive contacts are arranged such that, once force is applied thereto in order to insert the secondary battery set into the charging assembly, a spring will be mechanically compressed to store stress, the spring being...

Claims

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Application Information

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IPC IPC(8): H02J7/00H01M6/50H01M10/30H01M10/44H01M10/46H01M50/50H02J7/04H02J7/32H04B1/10H04N5/235H04N7/10H04N7/173
CPCH04N7/17309H04N7/104H04N5/2351H04B1/1027H02J7/32H01M10/46H01M2/348H01M2/20H01M2200/10H01M10/30H01M2200/101Y02E60/10H01M50/50H01M50/581H04N23/71
Inventor YANG, TAI-HER
Owner YANG TAI HER