EP0014696A1 - Separateur de batterie - Google Patents

Separateur de batterie

Info

Publication number
EP0014696A1
EP0014696A1 EP19780900207 EP78900207A EP0014696A1 EP 0014696 A1 EP0014696 A1 EP 0014696A1 EP 19780900207 EP19780900207 EP 19780900207 EP 78900207 A EP78900207 A EP 78900207A EP 0014696 A1 EP0014696 A1 EP 0014696A1
Authority
EP
European Patent Office
Prior art keywords
battery
generator
battery separator
charging
sensing element
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.)
Withdrawn
Application number
EP19780900207
Other languages
German (de)
English (en)
Inventor
Dick Erik Leonard Pettersson
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Pettersson Dick E L
Original Assignee
Pettersson Dick E L
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Pettersson Dick E L filed Critical Pettersson Dick E L
Publication of EP0014696A1 publication Critical patent/EP0014696A1/fr
Withdrawn legal-status Critical Current

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
    • H02J7/14—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries for charging batteries from dynamo-electric generators driven at varying speed, e.g. on vehicle
    • H02J7/1423—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries for charging batteries from dynamo-electric generators driven at varying speed, e.g. on vehicle with multiple batteries
    • 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
    • H02J7/32—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries for charging batteries from a charging set comprising a non-electric prime mover rotating at constant speed

Definitions

  • the present invention refers to a battery separator which permits simultaneous charging of at least two storage batteries.
  • the battery separator is utilized in connection with, for example, recreational boats, caravan-motor car combinations etc. equipped with two separate sto ⁇ rage batteries.
  • Battery separators are known. For example, in a recrea ⁇ tional boat it may be advisable, from a safety point of view, to have two storage batteries separated from each other, one for motor starting and one for the remaining consumptions. Both batteries are to be charged simulta ⁇ neously by the existing generator. On the other hand, one battery has to be capable of being loaded without the other also being loaded. With the prior battery separator this is effected by means of two diodes which permit the charging current from the generator to pass to the two batteries through one diode each. However, the diodes pre ⁇ vent current from passing from one battery to the other, or vice versa. The batteries are said to be capable of be ⁇ ing loaded individually. Yet, this prior solution results in the disadvantage that the charging of the batteries is impaired on account of the unavoidable forward voltage drop in the diodes. Accordingly, the batteries will never have the possibility of being charged to their full capa ⁇ city.
  • OMPI y ⁇ _ WIPO could be compensated by actuating the voltage regulator so that the generator produced a correspondingly higher charging voltage.
  • the regulator In to-day's generators, however, the regulator is often built into the generator housing whic complicates and in many cases precludes actuation of the regulator ifself.
  • the battery separator according to the present invention is based on a new principle and has a negligible voltage drop and, therefore, permits optimum charging of the bat teries.
  • the battery separator according to the invention is intended for controlling the charging current from a generator to a parallel combination of at least two bat ⁇ tery members which are capable of being loaded individu- ally.
  • the invention is characterized by a sensing elemen responsive to the charging current of the generator, a normally open switch which in one branch of the parallel combination is connected in series with an associated battery member, -and a control circuit connected to the sensing element for closing and opening, respectively, the switch when the charging current exceeds a first pre determined value and passes below a second predetermined value, respectively.
  • the battery separator permits optimum charging of the batteries of the parallel combination but prevents, as soon as the charging ceases, loading of one battery when the other is being loaded.
  • Figure 1 shows a circuit diagram of a prior battery sepa rator.
  • Figure 2 shows a fundamental circuit diagram of a battery separator according to the present invention, an
  • FIG. 3 shows a detailed circuit diagram of the battery separator according to the invention.
  • the prior battery separator mentioned in the introduction is shown in Figure 1 and includes a generator 1 connected in series with a parallel combination of two batteries 2 and 3, respectively.
  • a diode 4 and 5 respectively, the function of which is to prevent discharge of one bat- tery, for example 2, when the other, i.e. 3, is being dis ⁇ charged.
  • diodes 4 and 5 permit simultaneous charging of both batteries from the generator.
  • the forward voltage drop across either diode is typically 0.7 to 1 volt, which is sufficient for preventing optimum charging of each battery.
  • FIG. 2 shows a fundamental diagram of the battery separa ⁇ tor according to the present invention.
  • batteries 2 and 3 are included in a parallel combination to be charged by generator 1.
  • a sensing element 6 senses the charging current from the generator.
  • a switch 7 is connected in series with battery 2 in one branch of the parallel combination.
  • a control circuit 8 operates switch 7 in response to the charging current. When the charging current exceeds a first predetermined value, the normally open switch 7 is closed and both batteries are charged in parallel. When the charging current decreases below a second predetermined value, the control circuit 8 ' returns switch 7 to its normally open position.
  • Said se ⁇ cond value is less than the first one and is due to hyste- resis characteristics of the sensing element 6.
  • this hysteresis characte- ristic of the sensing element is utilized, and besides a break delay may be introduced between the moment at which said second predetermined value is no longer reached and switch 7 opens.
  • the break delay may be of the magnitude of 0.5 to 1 second.
  • generator 1 begins to rotate.
  • the output vo tage of the generator rises so as gradually to reach such a value that battery 3 will begin taking up charge.
  • switch 7 closes whereby battery 2 will also begin taking up charge.
  • the sensing element senses the charging current and not the charging voltage, for if the switch should close when th output voltage from the generator reaches- a certain valu but the charging current has not yet begun flowing, then battery 2 would be connected in parallel with battery 3, battery 2 being loaded in parallel with battery 3 and pe haps in the worst case completely consumed, which in a c se where battery 2 is, for example, the starting battery of a boat while battery 3 is connected to the remaining consumers of the boat makes repeated motor starting impo sible.
  • FIG. 3 shows a detailed circuit diagram of the battery separator according to the present invention.
  • the sensin element 6 consists of two components, viz. a current coi 9 which is connected in series between the generator and the battery parallel combination and which accordingly i applied to the plus pole of the system.
  • the other compo ⁇ nent of the sensing element consists of a blade element 10 which is arranged centrally within the current coil 9
  • the blade element 10 which usually includes two magnetic contact blades enclosed in a glass tube is activated and y its contact blades make contact with each other when the magnetic field in the, current coil 9 produced by the
  • O charging current amounts to the first predetermined va ⁇ lue which is determined by the product of the charging current and the number of turns of the current coil 9.
  • the control circuit 8 includes a relay having a relay coil 11 and a normally open make contact which forms the switch 7.
  • a normally open make contact or a normally open switch is meant that the con ⁇ tact is open when the relay coil is without current.
  • the relay coil 11 is connected to one end of the current coil 9, at which end also one contact bla ⁇ de of the blade element 10 is connected.
  • the other end of the relay coil is connected to the collector of a tran ⁇ sistor 12.
  • the emitter of the transistor is connected to the minus pole of the system.
  • the other contact blade of the blade element is connected via resistors 13 and 14 to the base of the transistor 12.
  • the common point between the resistors 13 and 14 connected in series is connected to one plate of a condenser 15, the other plate of which is connected to the minus pole of the system.
  • the combi- nation of resistor 14 and condenser 15 forms - cut-out time delay network having the time constant 0.5 to 1.0 se ⁇ conds.
  • a diode 16 is connected in parallel across the re ⁇ lay coil to protect the transistor against voltage tran ⁇ sients.
  • the transistor 12 is normally non-conducting.
  • the magnetic field in the current coil increases until the blade element closes, whereby the voltage rises on the base of the transistor and transis- tor 12 begins conducting, current passing through the re ⁇ lay coil 11.
  • the relay is energized and closes the normal ⁇ ly open switch 7.
  • Battery 2 is then connected in parallel with battery 3 and is charged together with the latter.
  • the magnetic field in the current coil 9 is no longer able to hold .. the contacts of the blade element closed.
  • the blade ele- ment opens and condenser 15 is. discharged through resis ⁇ tor 14 and the base-emitter junction of transistor 12, and with a certain time delay the transistor cuts off, the relay being de-energized and the switch opening.
  • Blade element which closes at about 30 ampere- turns and breaks at about 20 ampere-turns
  • Transistor e.g. BC 337/25 or an equivalent 13.
  • Resistor 47-T 1/4 Watt 14.
  • Resistor 33 k _ ⁇ - 1/4 Watt
  • the battery separator may be utilized for connecting an additional battery group, marked by the reference nume ⁇ ral 18, simultaneously with the connection of the batte-. ry group 2.
  • the battery group 18 may, for example, consist of an extra reserve battery.
  • the battery separator may advantageously be utilized in caravan-motor car combinations and in boats equipped with several batteries to secure a high starting preparedness.
  • battery 3 preferably is the motor car battery while battery 2 is the battery of the caravan.
  • batte ⁇ ry 2 preferably is the starting battery while battery 3 is used for the remaining consumers.

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Charge And Discharge Circuits For Batteries Or The Like (AREA)
  • Secondary Cells (AREA)

Abstract

Separateur de batterie de commande du courant de charge provenant d'un generateur (1) et alimentant une combinaison en parallele d'au moins deux batteries (2, 3) susceptibles d'etre chargees individuellement. Un detecteur (6) capte le courant de charge du generateur. Un interrupteur normalement ouvert est connecte sur une branche de la combinaison parallele en serie avec la batterie (2) de cette branche. Un circuit de commande connecte au detecteur ferme l'interrupteur (7) lorsque le courant de charge atteint une premiere valeur predeterminee et ouvre l'interrupteur lorsque le courant de charge tombe au-dessous d'une deuxieme valeur predeterminee respectivement. Le separateur de batterie permet un chargement optimum des batteries en parallele mais, des que la charge s'arrete, il evite le chargement d'une batterie pendant que l'autre est en charge.
EP19780900207 1978-02-13 1979-09-11 Separateur de batterie Withdrawn EP0014696A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
SE7801619 1978-02-13
SE7801619 1978-02-13

Publications (1)

Publication Number Publication Date
EP0014696A1 true EP0014696A1 (fr) 1980-09-03

Family

ID=20333970

Family Applications (1)

Application Number Title Priority Date Filing Date
EP19780900207 Withdrawn EP0014696A1 (fr) 1978-02-13 1979-09-11 Separateur de batterie

Country Status (4)

Country Link
EP (1) EP0014696A1 (fr)
GB (1) GB2036468B (fr)
SE (1) SE7908323L (fr)
WO (1) WO1979000617A1 (fr)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3236607A1 (de) * 1982-10-02 1984-04-05 Robert Bosch Gmbh, 7000 Stuttgart Schaltungsanordnung zur zeitraffenden aufladung der pufferbatterie eines fahrzeugbordnetzes
DE4120337A1 (de) * 1991-06-20 1992-12-24 Wabco Westinghouse Fahrzeug Zweikreisige spannungsversorgungsschaltung fuer fahrzeuge
DE4138943C1 (fr) * 1991-11-27 1993-05-27 Robert Bosch Gmbh, 7000 Stuttgart, De
DE19645944A1 (de) * 1996-11-07 1998-05-14 Bosch Gmbh Robert Steuergerät für ein Bordnetz

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1251980A (fr) * 1968-10-31 1971-11-03
US3806790A (en) * 1972-12-06 1974-04-23 Aichele Ass Inc Dual battery charger for vehicles
US3829753A (en) * 1973-10-17 1974-08-13 Aichele Ass Inc Dual battery charger for vehicles
IT996995B (it) * 1973-11-26 1975-12-10 Fiat Spa Sistema di alimentazione con batteria ausiliaria per impianti elettrici di autoveicoli

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See references of WO7900617A1 *

Also Published As

Publication number Publication date
WO1979000617A1 (fr) 1979-09-06
GB2036468B (en) 1982-08-25
SE7908323L (sv) 1979-10-08
GB2036468A (en) 1980-06-25

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