GB1155460A - Improvements in or relating to Battery Charger Circuit Arrangements - Google Patents
Improvements in or relating to Battery Charger Circuit ArrangementsInfo
- Publication number
- GB1155460A GB1155460A GB56639/66A GB5663966A GB1155460A GB 1155460 A GB1155460 A GB 1155460A GB 56639/66 A GB56639/66 A GB 56639/66A GB 5663966 A GB5663966 A GB 5663966A GB 1155460 A GB1155460 A GB 1155460A
- Authority
- GB
- United Kingdom
- Prior art keywords
- battery
- transistor
- current
- battery voltage
- charging
- 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
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J7/00—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
- H02J7/007—Regulation of charging or discharging current or voltage
- H02J7/00712—Regulation of charging or discharging current or voltage the cycle being controlled or terminated in response to electric parameters
- H02J7/007182—Regulation of charging or discharging current or voltage the cycle being controlled or terminated in response to electric parameters in response to battery voltage
- H02J7/007186—Regulation of charging or discharging current or voltage the cycle being controlled or terminated in response to electric parameters in response to battery voltage obtained with the battery disconnected from the charge or discharge circuit
Abstract
1,155,460. Charging batteries. GENERAL ELECTRIC & ENGLISH ELECTRIC COMPANIES Ltd. 19 March, 1968 [19 Dec., 1966], No. 56639/66. Heading H2H. [Also in Division G3] A circuit for charging a battery from an A.C. supply includes a rectifier arrangement and a unidirectional conducting device which permits charging current to flow into the battery only when the instantaneous value of the rectified supply voltage exceeds the battery voltage. At other times, a transistor is actuated to permit measurement of the battery voltage. In the circuit shown in Fig. 1, a diode 5 is connected between the positive output terminal of the rectifier bridge 3 and the positive terminal of the battery g, and across the diode is connected the base-to-emitter path of a transistor 6 in series with a high resistance 7. Thus, current only flows into the battery when the supply V s exceeds the battery voltage V b , and at such times there is no current through the transistor 6 since its base is positive with respect to its emitter. When V s is less than V b , the base of the transistor 6 is biased negatively and current will therefore flow through the transistor and through a resistance 8, so that a voltage V, indicative of the battery voltage, will appear at a tapping 10 on the resistance 8. The tapping may be connected to a meter. In a modification, Fig. 3 (not shown), the diode 5 is replaced by a thyristor which is triggered only when sufficient current is flowing through a protective transistor (13). This arrangement allows charging to proceed only when the battery is correctly connected and has at least a small amount of charge remaining in it. The circuit may be further modified, Fig. 4 (not shown), by the inclusion of a control transistor (20) and a Zener diode (21). The arrangement is such that when the initial battery voltage is very low, or when the battery voltage has reached a desired maximum value, the charging time during each cycle is considerably reduced, thus preventing damage or overcharging of the battery.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB56639/66A GB1155460A (en) | 1966-12-19 | 1966-12-19 | Improvements in or relating to Battery Charger Circuit Arrangements |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB56639/66A GB1155460A (en) | 1966-12-19 | 1966-12-19 | Improvements in or relating to Battery Charger Circuit Arrangements |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB1155460A true GB1155460A (en) | 1969-06-18 |
Family
ID=10477152
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB56639/66A Expired GB1155460A (en) | 1966-12-19 | 1966-12-19 | Improvements in or relating to Battery Charger Circuit Arrangements |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB1155460A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2207374A1 (en) * | 1972-11-20 | 1974-06-14 | Sony Corp | |
| DE2632496A1 (en) * | 1976-07-20 | 1978-01-26 | Georg Ing Grad Haubner | Thyristor controller for charging batteries - has shunt thyristor which short circuits generator when the battery is fully charged |
| EP0083492A1 (en) * | 1982-01-04 | 1983-07-13 | Skil Nederland B.V. | Battery charging circuit |
-
1966
- 1966-12-19 GB GB56639/66A patent/GB1155460A/en not_active Expired
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2207374A1 (en) * | 1972-11-20 | 1974-06-14 | Sony Corp | |
| DE2632496A1 (en) * | 1976-07-20 | 1978-01-26 | Georg Ing Grad Haubner | Thyristor controller for charging batteries - has shunt thyristor which short circuits generator when the battery is fully charged |
| EP0083492A1 (en) * | 1982-01-04 | 1983-07-13 | Skil Nederland B.V. | Battery charging circuit |
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