GB1537500A - Method and apparatus for measuring the state of charge of a battery - Google Patents
Method and apparatus for measuring the state of charge of a batteryInfo
- Publication number
- GB1537500A GB1537500A GB52738/75A GB5273875A GB1537500A GB 1537500 A GB1537500 A GB 1537500A GB 52738/75 A GB52738/75 A GB 52738/75A GB 5273875 A GB5273875 A GB 5273875A GB 1537500 A GB1537500 A GB 1537500A
- Authority
- GB
- United Kingdom
- Prior art keywords
- battery
- comparator
- extent
- falls below
- set value
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired
Links
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R19/00—Arrangements for measuring currents or voltages or for indicating presence or sign thereof
- G01R19/165—Indicating that current or voltage is either above or below a predetermined value or within or outside a predetermined range of values
- G01R19/16533—Indicating that current or voltage is either above or below a predetermined value or within or outside a predetermined range of values characterised by the application
- G01R19/16538—Indicating that current or voltage is either above or below a predetermined value or within or outside a predetermined range of values characterised by the application in AC or DC supplies
- G01R19/16542—Indicating that current or voltage is either above or below a predetermined value or within or outside a predetermined range of values characterised by the application in AC or DC supplies for batteries
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R31/00—Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
- G01R31/36—Arrangements for testing, measuring or monitoring the electrical condition of accumulators or electric batteries, e.g. capacity or state of charge [SoC]
- G01R31/3644—Constructional arrangements
- G01R31/3646—Constructional arrangements for indicating electrical conditions or variables, e.g. visual or audible indicators
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Tests Of Electric Status Of Batteries (AREA)
- Charge And Discharge Circuits For Batteries Or The Like (AREA)
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US53846375A | 1975-01-03 | 1975-01-03 | |
US05/591,055 US4017724A (en) | 1975-06-27 | 1975-06-27 | Apparatus for measuring battery depletion by monitoring reductions in voltage |
Publications (1)
Publication Number | Publication Date |
---|---|
GB1537500A true GB1537500A (en) | 1978-12-29 |
Family
ID=27065826
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB52738/75A Expired GB1537500A (en) | 1975-01-03 | 1975-12-23 | Method and apparatus for measuring the state of charge of a battery |
Country Status (6)
Country | Link |
---|---|
JP (1) | JPS5193340A (cs) |
CA (1) | CA1049614A (cs) |
DE (1) | DE2558526C2 (cs) |
FR (1) | FR2296945A1 (cs) |
GB (1) | GB1537500A (cs) |
IT (1) | IT1062151B (cs) |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP1250744A1 (en) * | 2000-01-10 | 2002-10-23 | Snap-on Incorporated | Usage counter for portable jump-starting battery unit |
US7580803B2 (en) | 2006-09-06 | 2009-08-25 | Techtronic Power Tools Technology Limited | Energy source monitoring and control system |
CN114449698A (zh) * | 2021-02-05 | 2022-05-06 | 成都芯源系统有限公司 | Led驱动系统及其反馈控制电路和反馈信号生成方法 |
Families Citing this family (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE3706076A1 (de) * | 1987-02-25 | 1988-09-08 | Elektron Bremen | Verfahren und vorrichtung zur ueberwachung des bereitschaftszustandes eines batteriebetriebenen fahrzeuges |
DE102004056190B4 (de) * | 2004-11-20 | 2013-12-19 | Braun Gmbh | Verfahren zur Bestimmung eines Ladungszustands einer wiederaufladbaren Batterie |
Family Cites Families (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE648836C (de) * | 1935-11-01 | 1937-08-09 | Accumulatoren Fabrik Akt Ges | Verfahren zur Kompensation des scheinbaren inneren Widerstandes der Batterie bei derSchaltung zur Messung des Betriebszustandes |
GB1136083A (en) * | 1965-03-11 | 1968-12-11 | Eaton Yale & Towne | A circuit for indicating when a battery is discharged |
US3484681A (en) * | 1967-10-27 | 1969-12-16 | Grady Charles B Jun | Remaining battery charge meter |
DE2028117B2 (en) * | 1969-06-12 | 1975-11-27 | Ckd Praha, Oborovy Podnik, Prag | Charge condition monitor and control for battery charger - stores earlier terminal volts value for comparison with later volts value |
FR2209107B1 (cs) * | 1972-12-06 | 1977-12-23 | Redresseurs Sta Benit | |
DE2321108B2 (de) * | 1973-04-26 | 1976-06-16 | Elektron Fabrik für physikalischtechnische Geräte Kerber & Co., 2800 Bremen | Einrichtung zur ueberwachung des entladezustands einer batterie |
-
1975
- 1975-12-12 CA CA241,631A patent/CA1049614A/en not_active Expired
- 1975-12-23 GB GB52738/75A patent/GB1537500A/en not_active Expired
- 1975-12-24 DE DE2558526A patent/DE2558526C2/de not_active Expired
- 1975-12-30 JP JP50159736A patent/JPS5193340A/ja active Pending
-
1976
- 1976-01-02 IT IT67003/76A patent/IT1062151B/it active
- 1976-01-02 FR FR7600036A patent/FR2296945A1/fr active Granted
Cited By (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP1250744A1 (en) * | 2000-01-10 | 2002-10-23 | Snap-on Incorporated | Usage counter for portable jump-starting battery unit |
EP1250744A4 (en) * | 2000-01-10 | 2003-06-04 | Snap On Tech Inc | USER COUNTER FOR PORTABLE BOOSTER POWER SUPPLY |
US7580803B2 (en) | 2006-09-06 | 2009-08-25 | Techtronic Power Tools Technology Limited | Energy source monitoring and control system |
CN114449698A (zh) * | 2021-02-05 | 2022-05-06 | 成都芯源系统有限公司 | Led驱动系统及其反馈控制电路和反馈信号生成方法 |
CN114449698B (zh) * | 2021-02-05 | 2024-01-12 | 成都芯源系统有限公司 | Led驱动系统及其反馈控制电路和反馈信号生成方法 |
Also Published As
Publication number | Publication date |
---|---|
IT1062151B (it) | 1983-06-30 |
FR2296945B1 (cs) | 1981-02-13 |
FR2296945A1 (fr) | 1976-07-30 |
DE2558526A1 (de) | 1976-07-08 |
DE2558526C2 (de) | 1985-09-19 |
CA1049614A (en) | 1979-02-27 |
JPS5193340A (cs) | 1976-08-16 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
US4020487A (en) | Analog-to-digital converter employing common mode rejection circuit | |
US4193026A (en) | Method and apparatus for measuring the state of charge of a battery by monitoring reductions in voltage | |
US4112358A (en) | Digital frequency measuring device | |
US4190823A (en) | Interface unit for use between analog sensors and a microprocessor | |
GB1346947A (en) | Analog-to-time conversion system | |
US4258306A (en) | State of battery charge indicator circuit | |
US3778794A (en) | Analog to pulse rate converter | |
US3581196A (en) | Digital capacitance meter by measuring capacitor discharge time | |
GB1537500A (en) | Method and apparatus for measuring the state of charge of a battery | |
US4127810A (en) | Digital voltmeter | |
US3930252A (en) | Bipolar dual-slope analog-to-digital converter | |
US3678505A (en) | Simultaneous logarithmic conversion and digital display apparatus | |
GB1508151A (en) | Signal rate to voltage converter | |
GB869406A (en) | Analog-to-digital converter | |
US4196419A (en) | Analog to digital converter | |
US4580127A (en) | Circuit for converting analog bipolar signals to digital signals | |
US3703001A (en) | Analog to digital converter | |
US3781677A (en) | Variable rate measuring device | |
CN108037358B (zh) | 单片机频率测试系统及方法 | |
US2824297A (en) | Automatic scale-changing apparatus | |
US3474235A (en) | Pulse percent indicator | |
GB861582A (en) | Improvements in compressed scale measuring instrument circuits | |
GB1534936A (en) | Method and a device for measuring the sparking efficiency in electrical discharge machining | |
US3644751A (en) | Digital capacitance meter | |
US4067231A (en) | Device for measuring parameters of impact pulses |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
PS | Patent sealed | ||
PE20 | Patent expired after termination of 20 years |
Effective date: 19951222 |