Method for determining residual battery charge
원문보기
IPC분류정보
국가/구분
United States(US) Patent
등록
국제특허분류(IPC7판)
H02J-007/00
H02J-007/16
G01N-027/416
출원번호
UP-0741348
(2007-04-27)
등록번호
US-7723959
(2010-06-14)
발명자
/ 주소
DePaula, Cristiano Borges
Fonseca, Denis
출원인 / 주소
Motorola, Inc.
대리인 / 주소
Cunningham, Gary J.
인용정보
피인용 횟수 :
1인용 특허 :
7
초록▼
A method is provided for determining a residual charge on a battery (12), comprising applying a discharge pulse to the battery (12) and measuring a first voltage on the battery (12) at a first time (t1). Additional voltages on the battery are measured at additional times (t2, t3) subsequent to the f
A method is provided for determining a residual charge on a battery (12), comprising applying a discharge pulse to the battery (12) and measuring a first voltage on the battery (12) at a first time (t1). Additional voltages on the battery are measured at additional times (t2, t3) subsequent to the first time (t1). Delta voltages (ΔV1, ΔV2) are determined by subtracting each of the additional voltages from the first voltage and delta times (Δt1, Δt2) are determined by subtracting the first time from each of the additional times. Regression equation coefficients (α, ε) are determined from regression analysis of the delta voltages and delta times, and are applied to a database for determining the residual charge.
대표청구항▼
The invention claimed is: 1. A method for determining a residual charge on a battery within an electronic device, comprising: applying a current pulse to the battery resulting in a voltage at a first time; determining first and second delta voltages measured from the voltage, at first and second de
The invention claimed is: 1. A method for determining a residual charge on a battery within an electronic device, comprising: applying a current pulse to the battery resulting in a voltage at a first time; determining first and second delta voltages measured from the voltage, at first and second delta times measured from the first time; determining regression equation coefficients from the first and second delta voltages and first and second delta times; and applying the regression equation coefficients to a database for determining the residual charge. 2. The method of claim 1 wherein the determination of the regression equation coefficients comprises regression analysis. 3. The method of claim 2 wherein the regression analysis comprises solving a system of two equations ΔV1=(α)1n(1+Δt1/ε) and ΔV2=(α)1n(1+Δt2/ε) to determine α and ε, where α is related to the voltage drop, ε is related to the time of the voltage drop, ΔV1 is the first delta voltage, ΔV2 is the second delta voltage, Δt1 is the first delta time, and Δt2 is the second delta time. 4. The method of claim 1 wherein the delta voltages and delta times are determined from a delay in time from the first time. 5. The method of claim 1 wherein the first time occurs after the application of the current pulse to allow for a voltage drop due to internal resistance. 6. The method of claim 1 wherein the first time occurs subsequent to the current pulse being applied. 7. The method of claim 1 wherein the electronic device is a mobile communication device and applying a current pulse comprises answering a call. 8. The method of claim 1 wherein the applying a current pulse comprises turning on or off a circuit of the electronic device. 9. A method for determining a residual charge on a battery within an electronic device, comprising: connecting a load to the battery; measuring a first voltage on the battery at a first time; measuring additional voltages on the battery at additional times subsequent to the first time; determining delta times by subtracting the first time from each of the additional times; determining delta voltages by subtracting each of the additional voltages from the first voltage, wherein each of the delta voltages correspond to one of the delta times; determining regression equation coefficients from regression analysis of the delta voltages and delta times; and applying the regression equation coefficients to a database for determining the residual charge. 10. The method of claim 9 wherein the regression analysis comprises solving a system of N equations, where N is equal to the number of delta voltages available and is greater or equal to 2, based on the regression equation model ΔV=ƒ(Δt, a1,a2, . . . , aN), where ΔV is a function of Δt and N coefficients (a1, a2, . . . , aN), wherein the values for each delta voltage and delta time are respectively substituted for ΔV and Δt in the equation to determine all N coefficients (a1, a2, . . . , aN). 11. The method of claim 9 wherein the delta voltages and delta times are determined from a delay in time from the first time. 12. The method of claim 9 wherein the first time occurs after the connecting of the load to allow for a voltage drop due to internal resistance. 13. The method of claim 9 wherein the first time occurs after the load is connected. 14. The method of claim 9 wherein the electronic device is a mobile communication device and connecting a load comprises answering a call. 15. The method of claim 9 wherein the connecting a load comprises turning on or off a circuit of the electronic device. 16. A method for determining a residual charge on a battery within an electronic device, comprising: connecting a load to the battery; measuring a first voltage on the battery at a time t1; measuring a second voltage on the battery at a time t2; measuring a third voltage on the battery at a time t3; determining a first delta voltage from the second voltage minus the first voltage; determining a second delta voltage from the third voltage minus the first voltage; determining a first delta time from the times t2 minus t1; determining a second delta time from the times t3 minus t1; determining regression equation coefficients by regression analysis of the first and second delta voltage and first and second times; and applying the regression equation coefficients to a database for determining the residual charge. 17. The method of claim 16 wherein the regression analysis comprises solving a system of equations based on the equation ΔV=(α)1n(1+Δt/ε) wherein the values for each delta voltage and delta time are respectively substituted for ΔV and Δt, to determine α and ε, where α is related to the voltage drop, and ε is related to the time of the voltage drop. 18. The method of claim 16 wherein the delta voltages and delta times are determined from a delay in time from the first time. 19. The method of claim 16 wherein the time t1 occurs after the load is connected to allow for a voltage drop due to internal resistance. 20. The method of claim 16 wherein the time t1 occurs after the load is connected. 21. The method of claim 16 wherein the electronic device is a mobile communication device and connecting a load comprises answering a call. 22. The method of claim 16 wherein the connecting a load comprises turning on or off a circuit of the electronic device.
연구과제 타임라인
LOADING...
LOADING...
LOADING...
LOADING...
LOADING...
이 특허에 인용된 특허 (7)
Barsoukov, Evgenij; Poole, Dan R.; Freeman, David L., Circuit and method for measurement of battery capacity fade.
Gong Andrew, System for charging portable computer's battery using both the dynamically determined power available based on power consumed by sub-system devices and power limits from the battery.
Li, Qinglan; Xu, Xiangchen, Method for on-line measurement of battery internal resistance, current operational module, and on-line measurement instrument for battery internal resistance.
※ AI-Helper는 부적절한 답변을 할 수 있습니다.