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
First Claim
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1. A charging device, comprising:
- a charging assembly including at least two charging assembly contacts;
a secondary battery set including at least two battery set contacts; and
a thermo-resetting bistable spring member, wherein said at least two charging assembly contacts are arranged to engage said at least two battery set contacts, wherein when said at least two charging assembly contacts and said two battery set contacts are pushed together by an external force, said thermo-resetting bistable spring member is pushed from a first position to a second position, said charging assembly and secondary battery set are electrically connected, and charging current is supplied from said charging assembly to said battery set, wherein at least one battery in said battery set generates heat when charged to saturation, wherein said thermo-resetting member is arranged to reset from said second position to said first position and break said electrical connection in response to heat generated by said battery, thereby cutting-off supply of charging current to said battery set; and
wherein said thermo-resetting member pushes said secondary battery set at least part way out of said charging assembly when the thermo-resetting member is reset in response to generation of heat upon saturation of said at least one battery in said secondary battery set.
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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.
53 Citations
18 Claims
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1. A charging device, comprising:
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a charging assembly including at least two charging assembly contacts;
a secondary battery set including at least two battery set contacts; and
a thermo-resetting bistable spring member, wherein said at least two charging assembly contacts are arranged to engage said at least two battery set contacts, wherein when said at least two charging assembly contacts and said two battery set contacts are pushed together by an external force, said thermo-resetting bistable spring member is pushed from a first position to a second position, said charging assembly and secondary battery set are electrically connected, and charging current is supplied from said charging assembly to said battery set, wherein at least one battery in said battery set generates heat when charged to saturation, wherein said thermo-resetting member is arranged to reset from said second position to said first position and break said electrical connection in response to heat generated by said battery, thereby cutting-off supply of charging current to said battery set; and
wherein said thermo-resetting member pushes said secondary battery set at least part way out of said charging assembly when the thermo-resetting member is reset in response to generation of heat upon saturation of said at least one battery in said secondary battery set. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9)
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10. A charging device, comprising:
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a charging assembly including at least two charging assembly contacts;
a secondary battery set including at least two battery set contacts; and
a thermo-resetting bistable spring member, wherein said at least two charging assembly contacts are arranged to engage said at least two battery set contacts, wherein when said at least two charging assembly contacts and said two battery set contacts are pushed together by an external force, said thermo-resetting bistable spring member is pushed from a first position to a second position, said charging assembly and secondary battery set are electrically connected, and charging current is supplied from said charging assembly to said battery set, wherein at least one battery in said battery set generates heat when charged to saturation, wherein said thermo-resetting member is arranged to reset from said second position to said first position and break said electrical connection in response to heat generated by said battery, thereby cutting-off supply of charging current to said battery set, and further comprising at least one permanent magnet arranged to retain said secondary battery set in said charging assembly until said thermo-setting member is reset upon charge saturation.
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11. A charging device, comprising:
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a charging assembly including at least two charging assembly contacts;
a secondary battery set including at least two battery set contacts; and
a thermo-resetting bistable spring member, wherein said at least two charging assembly contacts are arranged to enrage said at least two battery set contacts, wherein when said at least two charging assembly contacts and said two battery set contacts are pushed together by an external force, said thermo-resetting bistable spring member is pushed from a first position to a second position, said charging assembly and secondary battery set are electrically connected, and charging current is supplied from said charging assembly to said battery set, wherein at least one battery in said battery set generates heat when charged to saturation, wherein said thermo-resetting member is arranged to reset from said second position to said first position and break said electrical connection in response to heat generated by said battery, thereby cutting-off supply of charging current to said battery set, and wherein said electrical connection is broken by disengaging one of said charging assembly contacts from one of said battery set contacts on one side of the charging assembly.
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12. A charging device, comprising:
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a charging assembly including at least two charging assembly contacts;
a secondary battery set including at least two battery set contacts; and
a thermo-resetting bistable spring member, wherein said at least two charring assembly contacts are arranged to engage said at least two battery set contacts, wherein when said at least two charging assembly contacts and said two battery set contacts are pushed together by an external force, said thermo-resetting bistable spring member is pushed from a first position to a second position, said charging assembly and secondary battery set are electrically connected, and charging current is supplied from said charging assembly to said battery set, wherein at least one battery in said battery set generates heat when charged to saturation, wherein said thermo-resetting member is arranged to reset from said second position to said first position and break said electrical connection in response to heat generated by said battery, thereby cutting-off supply of charring current to said battery set, and wherein said electrical connection is broken by disengaging both of said charging assembly contacts from both of said battery set contacts.
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13. A charging device, comprising:
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a charging assembly including at least two charging assembly contacts; and
a secondary battery set including at least two battery set contacts;
wherein said at least two charging assembly contacts are arranged to engage said at least two battery set contacts, wherein at least one of said charging assembly contacts or battery set contacts is a thermo-resetting member, wherein when said secondary battery set is pushed into said recharging assembly are pushed together by an external force, said thermo-resetting member is pushed from a first position to a second position, said charging assembly and secondary battery set are electrically connected, and charging current is supplied from said charging assembly to said battery set, wherein at least one battery in said battery set generates heat when charged to saturation, wherein said thermo-resetting member is arranged to reset from said second position to said first position break said electrical connection in response to heat generated by said battery, thereby cutting-off supply of charging current to said battery set, and further comprising a spring member positioned at an interface between said secondary battery set and said charging assembly and arranged to be stressed when said secondary battery set is pushed into said charging assembly and wherein one of said contacts serves as a mortise and said thermo-resetting member serves as a tenon to retain said secondary battery set in said charging assembly, said thermo-resetting member releasing said secondary battery set by disengaging said mortise in response to heat generated by said at least one battery, thereby causing said spring to push said secondary battery set at least part way out of said charging assembly. - View Dependent Claims (14, 15)
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16. A charging device, comprising:
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a charging assembly including at least two charging assembly contacts; and
a secondary battery set including at least two battery set contacts;
wherein said at least two charging assembly contacts are arranged to engage said at least two battery set contacts, wherein at least one of said charging assembly contacts or battery set contacts is a thermo-resetting member, wherein when said secondary battery set is pushed into said recharging assembly are pushed together by an external force, said thermo-resetting member is pushed from a first position to a second position, said charging assembly and secondary battery set are electrically connected, and charging current is supplied from said charring assembly to said battery set, wherein at least one battery in said battery set generates heat when charged to saturation, wherein said thermo-resetting member is arranged to reset from said second position to said first position break said electrical connection in response to heat generated by said battery, thereby cutting-off supply of charging current to said battery set, and further comprising at least one permanent magnet arranged to retain said secondary battery set in said charging assembly until said thermo-setting member is reset upon charge saturation.
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17. A charging device, comprising:
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a charging assembly including at least two charging assembly contacts; and
a secondary battery set including at least two battery set contacts;
wherein said at least two charging assembly contacts are arranged to engage said at least two battery set contacts, wherein at least one of said charging assembly contacts or battery set contacts is a thermo-resetting member, wherein when said secondary battery set is pushed into said recharging assembly are pushed together by an external force, said thermo-resetting member is pushed from a first position to a second position, said charging assembly and secondary battery set are electrically connected, and charging current is supplied from said charring assembly to said battery set, wherein at least one battery in said battery set generates heat when charged to saturation, wherein said thermo-resetting member is arranged to reset from said second position to said first position break said electrical connection in response to heat generated by said battery, thereby cutting-off supply of charging current to said battery set, and wherein said electrical connection is broken by disengaging one of said charging assembly contacts from one of said battery set contacts on one side of the charging assembly.
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18. A charging device, comprising:
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a charging assembly including at least two charging assembly contacts; and
a secondary battery set including at least two battery set contacts;
wherein said at least two charging assembly contacts are arranged to engage said at least two battery set contacts, wherein at least one of said charging assembly contacts or battery set contacts is a thermo-resetting member, wherein when said secondary battery set is pushed into said recharging assembly are pushed together by an external force, said thermo-resetting member is pushed from a first position to a second position, said charging assembly and secondary battery set are electrically connected, and charging current is supplied from said charging assembly to said battery set, wherein at least one battery in said battery set generates heat when charged to saturation, wherein said thermo-resetting member is arranged to reset from said second position to said first position break said electrical connection in response to heat generated by said battery, thereby cutting-off supply of charging current to said battery set, and wherein said electrical connection is broken by disengaging both of said charging assembly contacts from both of said battery set contacts.
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Specification