초록 ▼

A state of charge (SOC) measuring apparatus for a battery device is provided capable of detecting accurate state of charge based on integrating charge and discharge current. The state of charge measuring apparatus carries out data substitution for displaying and controlling state of charge depending

A state of charge (SOC) measuring apparatus for a battery device is provided capable of detecting accurate state of charge based on integrating charge and discharge current. The state of charge measuring apparatus carries out data substitution for displaying and controlling state of charge depending on the upper limit SOC or lower limit SOC. The integrated SOC obtained by integrating charge and discharge currents is corrected into the corrected SOC by the incremented corrected value incremented at every data substitution time. The state of charge measuring apparatus corrects the integrated SOC at every data substitution such that the difference between the integrated SOC and the corrected SOC becomes larger, and when the integrated SOC is smaller than the upper limit SOC and larger than the lower limit SOC, the corrected SOC is displayed on the display portion as the displaying and controlling SOC.

대표청구항 ▼

A state of charge (SOC) measuring apparatus for a battery device is provided capable of detecting accurate state of charge based on integrating charge and discharge current. The state of charge measuring apparatus carries out data substitution for displaying and controlling state of charge depending

A state of charge (SOC) measuring apparatus for a battery device is provided capable of detecting accurate state of charge based on integrating charge and discharge current. The state of charge measuring apparatus carries out data substitution for displaying and controlling state of charge depending on the upper limit SOC or lower limit SOC. The integrated SOC obtained by integrating charge and discharge currents is corrected into the corrected SOC by the incremented corrected value incremented at every data substitution time. The state of charge measuring apparatus corrects the integrated SOC at every data substitution such that the difference between the integrated SOC and the corrected SOC becomes larger, and when the integrated SOC is smaller than the upper limit SOC and larger than the lower limit SOC, the corrected SOC is displayed on the display portion as the displaying and controlling SOC. ndary power source while said leads are shorted through electrical contact with the electrical contact means. 3. The switch of claim 2 wherein the inverter unit includes a power source and the power source comprises at least one battery. 4. The switch of claim 1 and further comprising means carried by and within the housing means for resiliently loading the electrical contact means, the electrical contact means returning to the first position from the second position on discontinuation of function of the displacing means, the electrical contact means being thereby disengaged from electrical contact with the leads. 5. The switch of claim 4 wherein the loading means comprise a body of elastomeric material having the electrical contact means disposed on a first portion thereof, the displacing means biasing against a second portion thereof to displace the electrical contact means into electrical contact with the leads against a force exerted by the elastomeric material acting to displace the electrical contact means from the second position to a position whereby the electrical contact means does not electrically contact the leads. 6. The switch of claim 5 wherein the electrical contact means comprise an electrically conductive disc. 7. The switch of claim 5 wherein the body of elastomeric material is formed of a body member having the electrical contact means disposed on one end thereof facing the leads within the housing means, the opposite end of the body member being contacted by the displacing means to bias the body member and the electrical contact means disposed thereon into electrical contact with the leads. 8. The switch of claim 7 wherein the body of elastomeric material is formed with a resilient apron disposed at least partially about peripheral side portions of the body member, the apron being fixed within the housing means, displacement of the body member from the first position to the second position acting to stretch the apron and resiliently load said apron whereby discontinuation of the function of the displacing means causes the resiliency of the apron to displace the body member and the electrical contact means carried thereby from the second position, the electrical contact means thereby being disengaged from electrical contact with the leads. 9. The switch of claim 1 whereby the housing means comprises a hollow body and a plunger housing open at its distal end and extending from a portion of the body, the displacing means further comprising a plunger disposed within the plunger housing for movement therewithin, a distal portion of the plunger extending from the open distal end of the plunger housing and being adapted for manual contact therewith exteriorly of the plunger housing to displace the plunger within said plunger housing, the plunger further having a pressure plate formed thereon and positioned within the body to engage the electrical contact means on displacement of the plunger to cause the electrical contact means to contact the leads. 10. The switch of claim 9 wherein the electrical contact means comprise a resiliently loaded spring element formed of electrically conductive material, the pressure plate of the plunger displacing a portion of the spring element into electrical contact with the leads on displacement of the plunger. 11. The switch of claim 9 and further comprising means for housing the indicating means within the interior of the hollow body. 12. The switch of claim 11 wherein the means for housing the indicating means is disposed within the body directly beneath the plunger housing, the plunger and the plunger housing being formed of a transparent material, the plunger being hollow, the indicating means at least partially extending into the hollow plunger, the indicating means being fixed in place within the hollow body and the plunger being displaceable relative to the indicating means. 13. The switch of claim 12 wherein the indicating means comprises a light emitting diode. 14. The s