WO2001022553A1 - Method for charging a battery - Google Patents
Method for charging a battery Download PDFInfo
- Publication number
- WO2001022553A1 WO2001022553A1 PCT/DE2000/003218 DE0003218W WO0122553A1 WO 2001022553 A1 WO2001022553 A1 WO 2001022553A1 DE 0003218 W DE0003218 W DE 0003218W WO 0122553 A1 WO0122553 A1 WO 0122553A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- voltage
- charging
- accumulator
- measuring shunt
- circuit
- Prior art date
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
- H02J7/00714—Regulation of charging or discharging current or voltage the cycle being controlled or terminated in response to electric parameters in response to battery charging or discharging current
Definitions
- the invention relates to a method for loading a Akkumu ⁇ lators of an electrical appliance, in particular a mobile phone, by means of a charging circuit according to the preamble of claim 1.
- rechargeable batteries are predominantly provided. Such batteries are charged either in the fixed part of the respective device or in their own charging stations, also called charging cradles, for new use in mobile operation.
- a charging current matched to the accumulator used is generated via a charging energy source, usually a charging device connected to the power grid, and is passed on to the latter.
- a charging energy source usually a charging device connected to the power grid, and is passed on to the latter.
- special attention must be paid to the fact that the accumulators are not overcharged, which can lead to a loss of performance, particularly if they are overcharged, and on the other hand the accumulators should always make their maximum capacity available wherever possible.
- the charging effectiveness of an accumulator cell corresponds to an efficiency of less than one, consequently an accumulator must be supplied with more and more energy, as has been removed.
- the factor by which the consumed capacity must be multiplied in order to determine the amount of electricity to be recharged is called the charging factor.
- the charging factor is usually fixed so that small nere cells with lower capacity is not overloaded and ge ⁇ can be damaged.
- the charging current is usually measured using a measuring resistor located in the charging circuit.
- the current in the consumer circuit, the discharge or consumption current is known for certain working conditions of the consumer and is therefore usually not measured, but rather determined according to the working condition of the consumer. These two variables are fed to a control unit, for example after an analog / digital conversion, and are balanced there by software.
- the object on which the invention is based is to achieve a very precise balancing of the charging of an accumulator with simple, inexpensive means. This object is achieved on the basis of the tent shees in the preamble of Pa ⁇ 1 defined by the method in Kennzei ⁇ chen of claim 1 stated features.
- a is located in the Direction circuit of the accumulator consumer is used as a measuring shunt, the consumer must exhibit a voltage drop for this function, which is proportional to a charge or Ent ⁇ charging current runs.
- a voltage proportional to the voltage drop across the measuring shunt is integrated by a device for capacitance counting over a period of time, so that an integral is generated which represents a signal representing the voltage drop.
- a control signal is in turn generated which controls a controlled charging switch in such a way that both charging and discharging is detected by the capacity counter device without knowing the charging and discharging current of the accumulator.
- the choice of a measuring shunt within the accumulator circuit has the advantage that both the charging and discharging current (consumer current) are recorded, so that any changes in the boundary conditions which are reflected in the recorded values compensate for one another when balancing the charging capacity.
- a fuse in the accumulator current circuit has the advantage that it has a voltage drop and the accumulator current protects circuit from damage, for example by short-circuit currents.
- the accumulator is discharged less than it is charged - the charging and discharging current are multiplied by different factors before they are balanced.
- comparator comparator
- This provides additional flexibility in the control of the charge switch, for example to compensate for inaccuracies in the detection of the changeover condition or to implement an adjustable hysteresis which prevents the charge switch from being constantly switched over.
- FIGURE 1 A model of a circuit arrangement which carries out the method according to the invention.
- FIGURE 2 Course and relationship of some important circuit parameters when performing the method according to the invention.
- FIGURE 1 shows the model of an electrical device EG, which can be coupled to a charging circuit U L , R via a coupling device.
- This controlled charging switch GLS is designed, for example, as a transistor, which has a corresponding circuit for functioning as a switching transistor.
- a control signal ST which switches the controlled charging switch GLS is generated by a comparator V2 located in the charging circuit, which is implemented, for example, by an appropriately connected operational amplifier.
- the circuitry of the comparator V2 is dimensioned such that a desired reference voltage, preferably with the value 0 volt, is set, which is compared with an integrated signal KP, the control signal ST being reached when the value of the reference voltage is reached by the integrated signal KP is generated with a value such that the controlled charging switch GLS interrupts the charging circuit.
- the integrated signal KP will be produced by a charge in the S trom Vietnamese that are available capacity counter CH. For this, a capacitance present at the counter KAP voltage U s' inte grated ⁇ is within a predetermined time by a timer ZG.
- the voltage U s ' is the result of a multiplication of a voltage U s dropping at a measuring shunt MS by a first or a second factor, the falling voltage U ⁇ being multiplied by the first factor if the sign is negative and multiplied by the second factor if the sign is positive becomes.
- the multiplication is carried out by an amplifier VI, in this case this amplifier V2 can be implemented, for example, by at least one operational amplifier with appropriate circuitry which is dimensioned in such a way that it ensures the first and second amplification factors. Due to the differentiated multiplication by the two factors, the charging current I L and the discharge current I E can be weighted differently in order to compensate for the charging effectiveness - the battery AK is charged more than discharging.
- the two factors can be selected so that they achieve an amplification of the voltage U s dropping at the measuring shunt MS, if, for example, the dropping voltage U s can only assume very small values which cannot be used by the capacity counter KAP.
- amplification and / or differentiated multiplication can also be dispensed with, so that the proportional voltage U ⁇ 'corresponds to the falling voltage U s in terms of magnitude and / or sign.
- a measuring shunt ls MS will back SI, the part of the Akkumu ⁇ latorstrom Vietnamesees is selected.
- the resistance value of the Si ⁇ insurance SI is responsible for ensuring that during charging and discharging of the accumulator AK, the voltage U s at the Si as insurance SI ausgestaltetem measuring shunt MS falls.
- This voltage drop U s is due to their location in the accumulator ⁇ circuit proportional to the load current I L or discharge current I E so that an evaluation of the voltage U s for the account for charge current I L and discharge current I e without knowledge of these GroE SEN possible becomes.
- a resistor in the accumulator circuit can also be used as the measuring shunt MS. It is also possible to use a line section in the accumulator circuit as a measuring shunt MS, for example in order to reduce costs, since a line section has a resistance value, even if it is low, and therefore a voltage U s also drops.
- the integration can in particular be carried out in certain discrete time intervals specified by the timer.
- control unit that is already in
- FIG. 2 shows the course and relationship of some important circuit parameters when carrying out the balancing method according to the invention for charging a battery. mulators with unknown charging currents I L and discharge currents I E. The course of the falling voltage is chosen arbitrarily and is only intended to illustrate the relationships.
- R s denotes the resistance value of the measuring shunt MS used and t the time.
- KP j -U s * dt
Abstract
Description
Claims
Priority Applications (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
AU13798/01A AU1379801A (en) | 1999-09-17 | 2000-09-15 | Method for charging a battery |
EP00975766A EP1214772A1 (en) | 1999-09-17 | 2000-09-15 | Method for charging a battery |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE19944737A DE19944737A1 (en) | 1999-09-17 | 1999-09-17 | Method of charging an accumulator |
DE19944737.3 | 1999-09-17 |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2001022553A1 true WO2001022553A1 (en) | 2001-03-29 |
Family
ID=7922454
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/DE2000/003218 WO2001022553A1 (en) | 1999-09-17 | 2000-09-15 | Method for charging a battery |
Country Status (5)
Country | Link |
---|---|
EP (1) | EP1214772A1 (en) |
CN (1) | CN1391717A (en) |
AU (1) | AU1379801A (en) |
DE (1) | DE19944737A1 (en) |
WO (1) | WO2001022553A1 (en) |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN102680901B (en) * | 2012-05-09 | 2014-09-03 | 北京宏达天恒科技有限公司 | Electronic energy detection system and method |
Citations (10)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4194146A (en) * | 1976-08-11 | 1980-03-18 | Saft-Societe Des Accumulateurs Fixes Et De Traction | Device for controlling the charging and discharging of a storage battery |
US4246529A (en) * | 1977-11-04 | 1981-01-20 | Minitronics Pty Limited | Current integrating battery charger |
US4247812A (en) * | 1977-10-18 | 1981-01-27 | Saft-Societe Des Accumulateurs Fixes Et De Traction | Method of controlling the recharging of storage cells, and monitoring their state of charge |
US4679000A (en) * | 1985-06-20 | 1987-07-07 | Robert Clark | Bidirectional current time integration device |
US5517277A (en) * | 1993-12-10 | 1996-05-14 | Nikon Corporation | Battery pack |
US5703466A (en) * | 1995-08-02 | 1997-12-30 | Honda Giken Kogyo Kabushiki Kaisha | Charging control apparatus |
US5796239A (en) * | 1994-11-10 | 1998-08-18 | Van Phuoc; Duong | Battery pack having a processor controlled battery operating system |
US5841284A (en) * | 1994-11-11 | 1998-11-24 | Fujitsu Limited | Apparatus for monitoring power of battery to supply electric power to load |
US5869949A (en) * | 1996-10-02 | 1999-02-09 | Canon Kabushiki Kaisha | Charging apparatus and charging system for use with an unstable electrical power supply |
US5883497A (en) * | 1992-11-13 | 1999-03-16 | Packard Bell Nec | Battery fuel gauge |
Family Cites Families (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE3832839C2 (en) * | 1988-09-28 | 1999-07-01 | Ind Automation Mikroelektronik | Procedure for monitoring rechargeable batteries |
DE4142760C1 (en) * | 1991-12-23 | 1993-04-08 | Leopold Kostal Gmbh & Co Kg, 5880 Luedenscheid, De | Monitor for current circuit of appliance, e.g. separate lamps of motor vehicle - uses differential amplifier as comparator with inputs across fuse and output supplying warning appts. if heat exceeds threshold value |
DE19507959C1 (en) * | 1995-03-07 | 1996-07-18 | Daimler Benz Ag | Current measuring device for automobile onboard supply network |
-
1999
- 1999-09-17 DE DE19944737A patent/DE19944737A1/en not_active Ceased
-
2000
- 2000-09-15 WO PCT/DE2000/003218 patent/WO2001022553A1/en not_active Application Discontinuation
- 2000-09-15 AU AU13798/01A patent/AU1379801A/en not_active Abandoned
- 2000-09-15 CN CN00815884A patent/CN1391717A/en active Pending
- 2000-09-15 EP EP00975766A patent/EP1214772A1/en not_active Withdrawn
Patent Citations (10)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4194146A (en) * | 1976-08-11 | 1980-03-18 | Saft-Societe Des Accumulateurs Fixes Et De Traction | Device for controlling the charging and discharging of a storage battery |
US4247812A (en) * | 1977-10-18 | 1981-01-27 | Saft-Societe Des Accumulateurs Fixes Et De Traction | Method of controlling the recharging of storage cells, and monitoring their state of charge |
US4246529A (en) * | 1977-11-04 | 1981-01-20 | Minitronics Pty Limited | Current integrating battery charger |
US4679000A (en) * | 1985-06-20 | 1987-07-07 | Robert Clark | Bidirectional current time integration device |
US5883497A (en) * | 1992-11-13 | 1999-03-16 | Packard Bell Nec | Battery fuel gauge |
US5517277A (en) * | 1993-12-10 | 1996-05-14 | Nikon Corporation | Battery pack |
US5796239A (en) * | 1994-11-10 | 1998-08-18 | Van Phuoc; Duong | Battery pack having a processor controlled battery operating system |
US5841284A (en) * | 1994-11-11 | 1998-11-24 | Fujitsu Limited | Apparatus for monitoring power of battery to supply electric power to load |
US5703466A (en) * | 1995-08-02 | 1997-12-30 | Honda Giken Kogyo Kabushiki Kaisha | Charging control apparatus |
US5869949A (en) * | 1996-10-02 | 1999-02-09 | Canon Kabushiki Kaisha | Charging apparatus and charging system for use with an unstable electrical power supply |
Non-Patent Citations (1)
Title |
---|
See also references of EP1214772A1 * |
Also Published As
Publication number | Publication date |
---|---|
DE19944737A1 (en) | 2001-03-29 |
CN1391717A (en) | 2003-01-15 |
EP1214772A1 (en) | 2002-06-19 |
AU1379801A (en) | 2001-04-24 |
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