Discharging of batteries
First Claim
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1. A battery discharge device, comprising:
- one or more battery receptacles to removably retain one or more batteries during a discharge process, each battery receptacle comprising a positive battery contact for forming an electrical contact with a positive battery terminal of a battery; and
a negative battery contact for forming an electrical contact with a negative battery terminal of the battery; and
a battery discharge indicator including;
a resistive heating material in electrical communication with the positive battery contact and with the negative battery contact of each battery receptacle, and a reversible thermochromic indicator in thermal communication with the resistive heating material; and
wherein the resistive heating material comprises a positive thermal coefficient carbon-based ink printed on a surface of an insulating substrate.
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Abstract
Embodiments are disclosed that relate to devices for discharging batteries. For example, one disclosed embodiment provides a battery discharge device including a positive battery contact for forming an electrical contact with a positive battery terminal of a battery, a negative battery contact for forming an electrical contact with a negative battery terminal of the battery, and a battery discharge indicator including a resistive heating material in electrical communication with the positive battery contact and with the negative battery contact, and also including a reversible thermochromic indicator in thermal communication with the resistive heating material.
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Citations
17 Claims
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1. A battery discharge device, comprising:
- one or more battery receptacles to removably retain one or more batteries during a discharge process, each battery receptacle comprising a positive battery contact for forming an electrical contact with a positive battery terminal of a battery; and
a negative battery contact for forming an electrical contact with a negative battery terminal of the battery; and
a battery discharge indicator including;
a resistive heating material in electrical communication with the positive battery contact and with the negative battery contact of each battery receptacle, and a reversible thermochromic indicator in thermal communication with the resistive heating material; and
wherein the resistive heating material comprises a positive thermal coefficient carbon-based ink printed on a surface of an insulating substrate. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8)
- one or more battery receptacles to removably retain one or more batteries during a discharge process, each battery receptacle comprising a positive battery contact for forming an electrical contact with a positive battery terminal of a battery; and
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9. A resistive battery discharge device for discharging batteries, comprising:
- a positive battery contact for forming an electrical contact with a positive battery terminal of a battery;
a negative battery contact for forming an electrical contact with a negative battery terminal of the battery;
a positive electrode in electrical communication with the positive battery contact;
a negative electrode in electrical communication with the negative battery contact;
a resistive heating material electrically bridging a portion of an electrical gap separating the positive electrode from the negative electrode, the resistive heating material having a constant cross-sectional area normal to a direction of an electrical current flow produced by the battery between the negative electrode and the positive electrode; and
a battery discharge indicator in thermal communication with the resistive heating material, the battery discharge indicator including a reversible thermochromic indicator, wherein the resistive battery discharge device is configured to discharge a fully charged battery in three hours or less;
wherein the resistive heating material is a positive thermal coefficient carbon-based ink printed on a surface of an insulating substrate. - View Dependent Claims (10, 11, 12, 13, 14, 15, 16)
- a positive battery contact for forming an electrical contact with a positive battery terminal of a battery;
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17. A method of discharging a battery with a resistive battery discharge device, the method comprising:
- inserting a plurality of batteries into a corresponding plurality of battery receptacles of the resistive battery discharge device;
discharging the batteries via the resistive battery discharge device to heat a reversible thermochromic material in the battery discharge device to thereby produce a color indicating a current flow produced by the batteries; and
removing the batteries from the battery receptacles after color indicating current flow has changed to indicate a lesser current flow from the batteries, and further comprising marking the batteries as discharged after removing the batteries from the resistive battery discharge device.
- inserting a plurality of batteries into a corresponding plurality of battery receptacles of the resistive battery discharge device;
Specification