Capacity indicator for lead-acid batteries
First Claim
1. A lead-acid battery having a capacity indicator which comprises a container, at least one partition dividing the container into cells, each of said cells including positive and negative plates and it separator positioned therebetween, one of said cells using the negative terminal cell and one being the positive terminal cell, a cover attached to said container and having at least one hole providing access to at least one of said cells, a positive terminal electrically connected to the positive plates in the positive terminal cell, a negative terminal electrically connected to the negative plates in the negative terminal cell, electrolyte contained in said cells, a reference electrode in electrical contact with the electrolyte, and electrical contact means allowing the voltage between the reference electrode and the negative plates in one cell to be determined, said voltage being indicative of the capacity of said lead-acid battery.
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Accused Products
Abstract
A lead-acid battery with a charge capacity indicator comprises a sensor that includes a reversible electrode, such as PbO2, as a reference electrode that does not participate in the battery charge and discharge reactions, and the voltage is measured between the reference electrode and the negative plates, for example, by using the negative terminal.
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Citations
14 Claims
- 1. A lead-acid battery having a capacity indicator which comprises a container, at least one partition dividing the container into cells, each of said cells including positive and negative plates and it separator positioned therebetween, one of said cells using the negative terminal cell and one being the positive terminal cell, a cover attached to said container and having at least one hole providing access to at least one of said cells, a positive terminal electrically connected to the positive plates in the positive terminal cell, a negative terminal electrically connected to the negative plates in the negative terminal cell, electrolyte contained in said cells, a reference electrode in electrical contact with the electrolyte, and electrical contact means allowing the voltage between the reference electrode and the negative plates in one cell to be determined, said voltage being indicative of the capacity of said lead-acid battery.
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14. A sealed lead-acid battery having a capacity indicator which comprises a container, a plurality of alternating positive and negative plates, a porous separator positioned between adjacent positive and negative plates, electrolyte contained in said battery and absorbed in said plates and separators, a reference electrode in electrical contact means allowing the voltage between the reference electrode and at least some of the negative plates to be determined, said voltage being indicative of the capacity of said lead-acid battery.
Specification