IPC분류정보
국가/구분 |
United States(US) Patent
등록
|
국제특허분류(IPC7판) |
|
출원번호 |
UP-0531243
(2006-09-12)
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등록번호 |
US-7710074
(2010-06-03)
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우선권정보 |
KR-10-2005-0097185(2005-10-14); KR-10-2005-0109838(2005-11-16); KR-10-2005-0111451(2005-11-21) |
발명자
/ 주소 |
- Kim, Young Hoon
- Park, Sun Woo
|
출원인 / 주소 |
|
대리인 / 주소 |
|
인용정보 |
피인용 횟수 :
4 인용 특허 :
6 |
초록
▼
Residual charge in a battery is measured based on a discharge voltage from the battery. A device for measuring the residual charge in the battery includes a fluctuation width amplifier configured to amplify a fluctuation width of a discharge voltage from the battery in excess of a threshold voltage.
Residual charge in a battery is measured based on a discharge voltage from the battery. A device for measuring the residual charge in the battery includes a fluctuation width amplifier configured to amplify a fluctuation width of a discharge voltage from the battery in excess of a threshold voltage. The device includes a display module configured to display the discharge voltage amplified by the fluctuation width amplifier. The discharge voltage amplified by the fluctuation width amplifier corresponds to the residual charge in the battery. The residual charge in the battery may be determined based on the discharge voltage and the application load data due to an operative application program.
대표청구항
▼
What is claimed is: 1. An apparatus for measuring residual charge in a battery, the apparatus comprising: a fluctuation width amplifier configured to amplify a fluctuation width of a discharge voltage from the battery in excess of a threshold voltage; an operation module configured to calculate the
What is claimed is: 1. An apparatus for measuring residual charge in a battery, the apparatus comprising: a fluctuation width amplifier configured to amplify a fluctuation width of a discharge voltage from the battery in excess of a threshold voltage; an operation module configured to calculate the amount of the residual charge in the battery based on the amplified discharge voltage by the fluctuation width amplifier and an application load amount; and a display module configured to display the amount of the residual charge in the battery, calculated by the operation module, wherein, in a condition in which the amplified discharge voltage is at a particular voltage and the particular voltage is lower than the discharge voltage, when the application load amount is equal to or less than a predetermined amount, the operation module calculates the amount of the residual charge that is lower than in a case where the application load amount exceeds in the predetermined amount. 2. The apparatus according to claim 1, wherein the display module comprises: a display element; an analog-digital converter configured to convert the discharge voltage having the fluctuation width amplified by the fluctuation width amplifier into digital discharge voltage data; and a driving unit configured to display the digital discharge voltage data from the analog-digital converter on the display element as the residual charge in the battery. 3. The apparatus according to claim 1, wherein the fluctuation width amplifier comprises: a reference voltage source configured to generate the threshold voltage; and an operational amplifier configured to amplify a fluctuation width of a discharge voltage component of the battery, wherein the discharge voltage component has a voltage level higher than the threshold voltage from the reference voltage source. 4. The apparatus according to claim 1, wherein the fluctuation width amplifier comprises: a reference voltage source configured to generate the threshold voltage; and a transistor coupling circuit configured to amplify a fluctuation width of a discharge voltage component from the battery, wherein the discharge voltage component is higher than the threshold voltage from the reference voltage source. 5. The apparatus according to claim 1, wherein the fluctuation width amplifier comprises: at least two reference voltage sources configured to generate threshold voltages having different voltage levels; a selection unit configured to select a threshold voltage from at least one of the reference voltage sources based on a battery characteristic; and an operational amplifier configured to amplify a fluctuation width of a discharge voltage component from the battery, wherein the discharge voltage component is higher than the threshold voltage selected by the selection unit. 6. The apparatus according to claim 1, wherein the fluctuation width amplifier comprises: at least two reference voltage sources configured to generate threshold voltages having different voltage levels; a selection unit configured to select a threshold voltage from at least one of the reference voltage sources based on a battery characteristic; and a transistor coupling circuit configured to amplify a fluctuation width of a discharge voltage component from the battery, wherein the discharge voltage component is higher than the threshold voltage from the selection unit. 7. The apparatus according to claim 1, wherein the operation module comprises: an analog-digital converter configured to convert the amplified discharge voltage into digital discharge voltage data; and a processor configured to calculate the amount of the residual charge in the battery based on the digital discharge voltage data from the analog-digital converter. 8. The apparatus according to claim 7, wherein the processor is configured to calculate the residual charge based on a conversion table, wherein the conversion table includes digital discharge voltage data in relation to a corresponding percentage of residual charge. 9. The apparatus according to claim 8, wherein the display module is configured to display the percentage of residual charge. 10. The apparatus according to claim 1, further comprising an application management module configured to detect an application load amount based on an operating program operatively driven by the battery, wherein the operation module is configured to calculate the amount of residual charge in the battery based on application load amount as well as the amplified discharge voltage amplified. 11. The apparatus according to claim 10, wherein the operation module comprises: an analog-digital converter configured to convert the amplified discharge voltage into digital discharge voltage data; and a processor configured to calculate the residual charge based on the application load amount and the digital discharge voltage data from the analog-digital converter. 12. The apparatus according to claim 11, wherein the processor is configured to calculate the residual charge based on a conversion table, wherein the conversion table includes digital discharge voltage data and application load amount data in relation to a corresponding percentage of residual charge. 13. The apparatus according to claim 12, wherein the display element is configured to display the percentage of residual charge. 14. The apparatus according to claim 1, wherein the amplified discharge voltage falls within a range from 0.5V to 4V. 15. A method for measuring an amount of residual charge in a battery, the method comprising: amplifying a fluctuation width of the discharge voltage of a battery; calculating the residual charge in the battery based on a discharge voltage having the amplified fluctuation width and an application load amount; and displaying the amount of the residual charge, wherein, in a condition in which the amplified discharge voltage is at a particular voltage and the particular voltage is lower than the discharge voltage, when the application load amount is equal to or less than a predetermined amount, the amount of the residual charge is calculated that is lower than in a case where the application load amount exceeds in the predetermined amount. 16. The method according to claim 15, wherein amplifying the fluctuation width of a discharge voltage of a battery further comprises: selecting a specific threshold voltage from at least two available threshold voltages having different voltage levels, wherein the threshold voltages are based on a characteristic of the battery and are selected before the discharge voltage of the battery is inputted to the measurement device. 17. The method of claim 15, wherein amplifying the fluctuation width of a discharge voltage of a battery comprises: inputting a discharge voltage of the battery to a measurement device; comparing the discharge voltage of the battery with a threshold voltage; setting the residual charge in the battery as “0” if the discharge voltage of the battery is less than the threshold voltage; amplifying a fluctuation width of the discharge voltage of the battery if the discharge voltage of the battery is the threshold voltage or more than the threshold voltage. 18. The method according to claim 15, further comprising removing a noise component from a discharge voltage having the amplified fluctuation width, wherein calculating the residual charge is performed based on the discharge voltage having the amplified fluctuation width with the removed noise component. 19. The method according to claim 18, further comprising correcting errors in the residual charge. 20. The method according to claim 18, wherein removing the noise component comprises: removing a transient response component included in the discharge voltage having the amplified fluctuation width; and removing a high frequency noise component that is lower than the transient response component and which does not include a separate transient response component. 21. The method according to claim 19, wherein correcting the errors comprises: comparing a current calculated amount of residual charge with a previously calculated amount of residual charge; and disregarding the current calculated amount of residual charge that is greater than the previously calculated amount of residual charge. 22. The method according to claim 18, wherein calculating the residual charge comprises searching a conversion table for a percentage of residual charge corresponding to the discharge voltage. 23. The method according to claim 15, further comprising: determining if an external power source is connected to a portable electronic instrument operatively connected with the battery; and correcting errors included in a calculation of the residual charge if the external power source is not connected to the portable electronic instrument. 24. The method according to claim 23, wherein correcting the errors comprises: comparing a current calculated amount of residual charge with a previously calculated amount of residual charge if the external power source is not connected to the portable electronic instrument; and disregarding the current calculated amount of residual charge greater than the previously calculated amount of residual charge. 25. The method according to claim 24, wherein displaying the amount of the residual charge comprises: displaying the current calculated amount of residual charge if the external power source is connected to the portable electronic instrument; and displaying a percentage of residual charge if the external power source is not operatively connected to the portable electronic instrument. 26. The method according to claim 23, wherein calculating the residual charge comprises searching a conversion table for a percentage of residual charge corresponding to the discharge voltage. 27. A portable electronic instrument for measuring residual charge in a battery, the portable electronic instrument comprising: a peripheral circuit module configured to be driven by a discharge voltage from the battery; a display element configured to display an operation state of the peripheral circuit module; a fluctuation width amplifier configured to amplify a fluctuation width of a discharge voltage from the battery in excess of a threshold voltage; and a controller configured to display the residual charge in the battery on the display element and to control an operation mode of the peripheral circuit module based on the discharge voltage having the amplified fluctuation width and an application load amount, wherein, in a condition in which the discharge voltage having the amplified fluctuation width is at a particular voltage and the particular voltage is lower than the discharge voltage, when the application load amount is equal to or less than a predetermined amount, the controller displays the amount of the residual charge that is lower than in a case where the application load amount exceeds the predetermined amount. 28. The portable electronic instrument according to claim 27, wherein the controller comprises: an analog to digital converter configured to convert the discharge voltage having the fluctuation width amplified by the fluctuation width amplifier into digital discharge voltage data; and a processor configured to display the residual charge in the battery on the display element and to control an operation mode of the peripheral circuit module based on the digital discharge voltage data from the an analog-digital converter. 29. The portable electronic instrument according to claim 27, wherein the fluctuation width amplifier comprises: a reference voltage source configured to generate the threshold voltage; and an operational amplifier configured to amplify a fluctuation width of a discharge voltage component of the battery, wherein the discharge voltage component is higher than the threshold voltage from the reference voltage source. 30. The portable electronic instrument according to claim 27, wherein the fluctuation width amplifier comprises: a reference voltage source configured to generate the threshold voltage; and a transistor coupling circuit configured to amplify a fluctuation width of a discharge voltage component from the battery, wherein the discharge voltage component is higher than the threshold voltage from the reference voltage source. 31. The portable electronic instrument according to claim 27, wherein the fluctuation width amplifier comprises: at least two reference voltage sources configured to generate threshold voltages having different voltage levels; a selection unit configured to select a threshold voltage from at least two reference voltage sources based on a characteristic of the battery; and an operational amplifier configured to amplify a fluctuation width of a discharge voltage component from the battery, wherein the discharge voltage component is higher than the threshold voltage from the selection unit. 32. The portable electronic instrument according to claim 27, wherein the fluctuation width amplifier comprises: at least two reference voltage sources configured to generate threshold voltages having different voltage levels; a selection unit configured to select a threshold voltage from at least two reference voltage sources based on a characteristic of the battery; and a transistor coupling circuit configured to amplify a fluctuation width of a discharge voltage component from the battery, wherein the discharge voltage component is higher than the threshold voltage from the selection unit. 33. The portable electronic instrument according to claim 27, wherein the controller configured to correct errors included in a calculated amount of the residual charge, and to control an operation mode of the peripheral module based on the corrected amount of the residual charge. 34. The portable electronic instrument according to claim 33, wherein the controller comprises: an analog to digital converter configured to convert the discharge voltage having the fluctuation width amplified by the fluctuation width amplifier into digital discharge voltage data; and a processor configured to display the residual charge in the battery on the display element and to control an operation mode of the peripheral circuit module based on the digital discharge voltage data from the an analog-digital converter. 35. The portable electronic instrument according to claim 34, wherein the processor is configured to calculate the amount of the residual charge in the battery by searching a conversion table, wherein the conversion table includes digital discharge voltage data in relation to a corresponding percentage of residual charge. 36. The portable electronic instrument according to claim 34, wherein the processor is configured to remove a noise component included in the digital discharge voltage data received from the analog-digital converter prior to calculating the amount of the residual charge. 37. The portable electronic instrument according to claim 27, further comprising an application management module configured to detect an application load amount doe to an operative application in the portable electronic instrument, wherein the controller configured to calculate the amount of residual charge in the battery based on the application load amount as well as the amplified discharge voltage, to correct errors included in the calculated amount of the residual charge, and to control an operation mode of the peripheral module based on the corrected amount of the residual charge. 38. The portable electronic instrument according to claim 37, wherein the controller comprises: an analog to digital converter configured to convert the discharge voltage having a fluctuation width amplified by the fluctuation width amplifier into digital discharge voltage data; and a processor configured to calculate the amount of the residual charge in the battery based on the digital discharge voltage data from the analog-digital converter and the application load amount, to correct errors included in the calculated amount of the residual charge if the peripheral circuit module is driven by the discharge voltage of the battery, and to control an operation mode of the peripheral module based on the corrected amount of the residual charge. 39. The portable electronic instrument according to claim 38, wherein the processor is configured to calculate the amount of the residual charge in the battery by searching a conversion table, wherein the conversion table includes digital discharge voltage data and application load amount data in relation to a corresponding percentage of residual charge. 40. The portable electronic instrument according to claim 39, wherein the processor is configured to remove a noise component included in the digital discharge voltage data from the analog-digital converter before calculating the amount of the residual charge. 41. A portable electronic instrument for measuring an amount of residual charge in a battery, the portable electronic instrument comprising: a peripheral circuit module operatively driven by a discharge voltage from the battery and an external voltage from an external instrument; a display element configured to display an operation state of the peripheral circuit module; a fluctuation width amplifier configured to amplify a fluctuation width of a discharge voltage from the battery in excess of a threshold voltage; and an controller configured to calculate the residual charge in the battery based on a discharge voltage amplified by the fluctuation width amplifier and an application load amount, to display the residual charge in the battery on the display element and to control an operation mode of the peripheral circuit module based on the discharge voltage having the amplified fluctuation width, wherein, in a condition in which the amplified discharge voltage is at a particular voltage and the particular voltage is lower than the discharge voltage, when the application load amount is equal to or less than a predetermined amount, the controller calculates the amount of the residual charge that is lower than in a case where the application load amount exceeds the predetermined amount. 42. The portable electronic instrument according to claim 41, wherein the controller comprises: an analog-digital converter configured to convert the amplified discharge voltage having a fluctuation width amplified by the fluctuation width amplifier into digital discharge voltage data; and a central processing unit configured to calculate the amount of the residual charge in the battery based on the digital discharge voltage data from the analog-to-digital converter, to correct errors included in the calculated amount of the residual charge if the peripheral circuit module is driven by the discharge voltage of the battery, and to control an operation mode of the peripheral circuit module based on the corrected amount of the residual charge. 43. The portable electronic instrument according to claim 42, wherein the central processing unit is configured to calculate the amount of the residual charge in the battery by searching a conversion table, wherein the conversion table includes digital discharge voltage data in relation to a corresponding percentage of residual charge. 44. The portable electronic instrument according to claim 42, wherein the central processing unit is configured to remove a noise component included in the digital discharge voltage data from the analog to digital converter before the amount of the residual charge is calculated by the central processing unit. 45. The portable electronic instrument according to claim 41, wherein the controller is configured to display the calculated amount of the residual charge as the amount of the residual charge in the battery if the peripheral circuit module is driven by the external voltage. 46. The portable electronic instrument according to claim 41, further comprising an application management module configured to detect an application load amount due to an operative application in the portable electronic instrument, wherein the controller configured to calculate the amount of the residual charge in the battery based on the application load amount as well as the amplified discharge voltage, to correct errors included in the calculated amount of the residual charge if the peripheral circuit module is driven by the discharge voltage of the battery, and to control an operation mode of the peripheral module based on the corrected amount of the residual charge. 47. The portable electronic instrument according to claim 46, wherein the controller comprises: an analog-to-digital converter configured to convert the discharge voltage having a fluctuation width amplified by the fluctuation width amplifier into digital discharge voltage data; and a central processing unit configured to calculate the amount of the residual charge in the battery based on the digital discharge voltage data from the analog to digital converter and the application load amount, to correct errors included in the calculated amount of the residual charge if the peripheral circuit module is driven by the discharge voltage of the battery, and to control an operation mode of the peripheral module based on the corrected amount of the residual charge. 48. The portable electronic instrument according to claim 47, wherein the central processing unit is configured to calculate the amount of the residual charge in the battery by searching a conversion table, the conversion table including digital discharge voltage data and application load amount data in relation to a corresponding percentage of residual charge. 49. The portable electronic instrument according to claim 48, wherein the central processing unit is configured to remove noises included in the digital discharge voltage data from the analog to digital converter before calculating the amount of the residual charge. 50. The portable electronic instrument according to claim 46, wherein the controller is configured to display the calculated amount of the residual charge as the amount of the residual charge in the battery if the peripheral circuit module is driven by the external voltage.
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