GB2093285A - Battery Charger/Controller - Google Patents

Battery Charger/Controller Download PDF

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Publication number
GB2093285A
GB2093285A GB8104446A GB8104446A GB2093285A GB 2093285 A GB2093285 A GB 2093285A GB 8104446 A GB8104446 A GB 8104446A GB 8104446 A GB8104446 A GB 8104446A GB 2093285 A GB2093285 A GB 2093285A
Authority
GB
United Kingdom
Prior art keywords
controller
charger
chopper
battery
motor
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Withdrawn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
GB8104446A
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.)
Chloride Group Ltd
Original Assignee
Chloride Group Ltd
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 Chloride Group Ltd filed Critical Chloride Group Ltd
Priority to GB8104446A priority Critical patent/GB2093285A/en
Priority to SE8200833A priority patent/SE8200833L/en
Priority to DE19823204901 priority patent/DE3204901A1/en
Publication of GB2093285A publication Critical patent/GB2093285A/en
Withdrawn legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60L—PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
    • B60L15/00—Methods, circuits, or devices for controlling the traction-motor speed of electrically-propelled vehicles
    • B60L15/02—Methods, circuits, or devices for controlling the traction-motor speed of electrically-propelled vehicles characterised by the form of the current used in the control circuit
    • B60L15/08—Methods, circuits, or devices for controlling the traction-motor speed of electrically-propelled vehicles characterised by the form of the current used in the control circuit using pulses
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60L—PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
    • B60L53/00—Methods of charging batteries, specially adapted for electric vehicles; Charging stations or on-board charging equipment therefor; Exchange of energy storage elements in electric vehicles
    • B60L53/20—Methods of charging batteries, specially adapted for electric vehicles; Charging stations or on-board charging equipment therefor; Exchange of energy storage elements in electric vehicles characterised by converters located in the vehicle
    • 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
    • H02J7/02—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries for charging batteries from ac mains by converters
    • 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
    • H02J2207/00—Indexing scheme relating to details of circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
    • H02J2207/20—Charging or discharging characterised by the power electronics converter
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
    • Y02T10/00—Road transport of goods or passengers
    • Y02T10/60—Other road transportation technologies with climate change mitigation effect
    • Y02T10/64—Electric machine technologies in electromobility
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
    • Y02T10/00—Road transport of goods or passengers
    • Y02T10/60—Other road transportation technologies with climate change mitigation effect
    • Y02T10/70—Energy storage systems for electromobility, e.g. batteries
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
    • Y02T10/00—Road transport of goods or passengers
    • Y02T10/60—Other road transportation technologies with climate change mitigation effect
    • Y02T10/7072—Electromobility specific charging systems or methods for batteries, ultracapacitors, supercapacitors or double-layer capacitors
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
    • Y02T90/00—Enabling technologies or technologies with a potential or indirect contribution to GHG emissions mitigation
    • Y02T90/10—Technologies relating to charging of electric vehicles
    • Y02T90/14—Plug-in electric vehicles

Abstract

This invention is a battery charger/battery driven motor controller which uses a common battery (11) and chopper (21) in two different modes of operation. In a charging mode the chopper is connected in series with the primary winding (25) of a transformer to provide high frequency chopping of the rectified charger supply, and the secondary voltage 15 is rectified and used for charging the battery. In the motor/controller mode of operation the same chopper (21) is used to control the current in a series motor (13, 17). There are alternative driver circuits (28) and (29) for the chopper (21) in the two modes. <IMAGE>

Description

SPECIFICATION Battery Charger/Controller This invention relates to a battery charger in combination with an electric motor controller for controlling the supply to a motor or other load from a battery charged by the charger, and one object of the invention is to provide a combined circuit with simple change-over arrangements from charger operation to controller operation.
According to the invention, a battery charger/motor controller includes a charger transformer, a transistor--or other-chopper, and switch means arranged to connect the chopper, either to chop the transformer current in a charger mode of operation, or to chop the current flowing to load terminals in a controller mode of operation.
The chopper conveniently consists of a bank of transistors mounted in hard parallel in accordance with the current to be handled.
The charger-controller conveniently includes the battery connected across the transformer output, and connected to one of the load terminals. Then the chopper can either be connected in series with the transformer primary, or between the battery and the other load terminal in accordance with the operation of the switch means.
Conveniently the charger/controller includes also a d.c. motor preferably a series motor with means for connecting the field in series with the armature in either sense in dependence upon the desired direction of rotation.
There may be alternative drivers for the chopper in the two different modes of operation.
During charging, it is preferred that the chopper acts at a supersonic frequency for example a frequency of 30 KHz so that operation does not give rise to audible noise, and the transformer can be a small and compact high frequency transformer.
Controlling may be at a chopping frequency high enough to minimise ripple, but probably no greater than 1 KHz, and ther may be means for controling the chopping in dependence upon the measured motor current in relation to the load demand.
Control of the driver during charging may be in dependence upon charging current and battery voltage and may well be arranged to maintain them constant.
The invention may be carried into practice in various ways, and one embodiment will now be described by way of example, with reference to the accompanying drawing, of which the single figure is a circuit diagram of a battery charger and d.c. series motor controller.
The charger/controller uses a 24 volts battery 11 shunted by a capacitor 12, and the positive side of the battery is connected to one terminal of the armature 13 of a d.c. motor, and also through inductance 14 to one side of the secondary winding 1 5 of a high frequency transformer through a half wave rectifying diode 1 6. The other side of the battery is connected to the outer side of the secondary winding 1 5.
The motor field winding 1 7 can be connected in series with the armature 1 3 in either sense in dependence upon the closing of a forward or a reverse switch 1 8 or 1 9 which acts to connect the motor to the collectors of a bank of transistors 21 in parallel. In a controller mode of operation the emitters of the transitors are connected to the other side of the battery 11 through a contactor 22.
During a charging mode of operation a 240 volts single phase mains supply 23 is connected through a full wave rectifier 24 to the primary winding 25 of the transformer. The transformer primary circuit is completed by the chopper 21 when the contactor 22 is in its "charging" position.
The arrangement is such that during charging the chopper 21 acts to provide a high frequency alternating square pulse input to the transformer primary 25, and the corresponding secondary voltage is rectified at 16, and used for charging the battery. During the controller mode of operation the transformer primary winding is open circuited and the battery is connected to the motor terminals through the same chopper 21 which now acts to control the motor current.
The chopper 21 is operated by a driver 26 which in the charger mode of operation as set by a contactor 27 is controlled from a charger logic circuit 28 controlled in accordance with the charging current and battery voltage at a supersonic frequency. During the controller mode of operation, the driver 26 is controlled by controller logic 29 to chop the motor current at the desired average value with the chopping frequency of about 1 KHz. The two logic circuits 28 and 29 have a common power supply 31.
The transformer has a tertiary winding 32 connected in series with a diode 33 across a capacitor 34 connected across the output of the full wave rectifier 24. That winding enables circulating current to flow during the alternate half cycles when the half wave rectifier 1 6 is not passing current. A snubber 35 is connected across the transistor chopper 21.
Claims
A battery charger/motor controller including a charger transformer, a chopper, and switch means arranged to connect the chopper, either to chop the transformer current in a charger mode of operation, or to chop the current flowing to load terminals in a controller mode of operation.
2. A charger/controller as claimed in Claim 1 in which the chopper comprises a transistor or a bank of transitors in parallel.
3. A charger/controller as claimed in either of the preceding claims including a battery connected to the transformer secondary winding, and to one of the load terminals.
4. A charger/controller as claimed in any of the preceding claims including a d.c. motor connected between the load terminals.
**WARNING** end of DESC field may overlap start of CLMS **.

Claims (9)

  1. **WARNING** start of CLMS field may overlap end of DESC **.
    SPECIFICATION Battery Charger/Controller This invention relates to a battery charger in combination with an electric motor controller for controlling the supply to a motor or other load from a battery charged by the charger, and one object of the invention is to provide a combined circuit with simple change-over arrangements from charger operation to controller operation.
    According to the invention, a battery charger/motor controller includes a charger transformer, a transistor--or other-chopper, and switch means arranged to connect the chopper, either to chop the transformer current in a charger mode of operation, or to chop the current flowing to load terminals in a controller mode of operation.
    The chopper conveniently consists of a bank of transistors mounted in hard parallel in accordance with the current to be handled.
    The charger-controller conveniently includes the battery connected across the transformer output, and connected to one of the load terminals. Then the chopper can either be connected in series with the transformer primary, or between the battery and the other load terminal in accordance with the operation of the switch means.
    Conveniently the charger/controller includes also a d.c. motor preferably a series motor with means for connecting the field in series with the armature in either sense in dependence upon the desired direction of rotation.
    There may be alternative drivers for the chopper in the two different modes of operation.
    During charging, it is preferred that the chopper acts at a supersonic frequency for example a frequency of 30 KHz so that operation does not give rise to audible noise, and the transformer can be a small and compact high frequency transformer.
    Controlling may be at a chopping frequency high enough to minimise ripple, but probably no greater than 1 KHz, and ther may be means for controling the chopping in dependence upon the measured motor current in relation to the load demand.
    Control of the driver during charging may be in dependence upon charging current and battery voltage and may well be arranged to maintain them constant.
    The invention may be carried into practice in various ways, and one embodiment will now be described by way of example, with reference to the accompanying drawing, of which the single figure is a circuit diagram of a battery charger and d.c. series motor controller.
    The charger/controller uses a 24 volts battery 11 shunted by a capacitor 12, and the positive side of the battery is connected to one terminal of the armature 13 of a d.c. motor, and also through inductance 14 to one side of the secondary winding 1 5 of a high frequency transformer through a half wave rectifying diode 1 6. The other side of the battery is connected to the outer side of the secondary winding 1 5.
    The motor field winding 1 7 can be connected in series with the armature 1 3 in either sense in dependence upon the closing of a forward or a reverse switch 1 8 or 1 9 which acts to connect the motor to the collectors of a bank of transistors 21 in parallel. In a controller mode of operation the emitters of the transitors are connected to the other side of the battery 11 through a contactor 22.
    During a charging mode of operation a 240 volts single phase mains supply 23 is connected through a full wave rectifier 24 to the primary winding 25 of the transformer. The transformer primary circuit is completed by the chopper 21 when the contactor 22 is in its "charging" position.
    The arrangement is such that during charging the chopper 21 acts to provide a high frequency alternating square pulse input to the transformer primary 25, and the corresponding secondary voltage is rectified at 16, and used for charging the battery. During the controller mode of operation the transformer primary winding is open circuited and the battery is connected to the motor terminals through the same chopper 21 which now acts to control the motor current.
    The chopper 21 is operated by a driver 26 which in the charger mode of operation as set by a contactor 27 is controlled from a charger logic circuit 28 controlled in accordance with the charging current and battery voltage at a supersonic frequency. During the controller mode of operation, the driver 26 is controlled by controller logic 29 to chop the motor current at the desired average value with the chopping frequency of about 1 KHz. The two logic circuits 28 and 29 have a common power supply 31.
    The transformer has a tertiary winding 32 connected in series with a diode 33 across a capacitor 34 connected across the output of the full wave rectifier 24. That winding enables circulating current to flow during the alternate half cycles when the half wave rectifier 1 6 is not passing current. A snubber 35 is connected across the transistor chopper 21.
    Claims
    A battery charger/motor controller including a charger transformer, a chopper, and switch means arranged to connect the chopper, either to chop the transformer current in a charger mode of operation, or to chop the current flowing to load terminals in a controller mode of operation.
  2. 2. A charger/controller as claimed in Claim 1 in which the chopper comprises a transistor or a bank of transitors in parallel.
  3. 3. A charger/controller as claimed in either of the preceding claims including a battery connected to the transformer secondary winding, and to one of the load terminals.
  4. 4. A charger/controller as claimed in any of the preceding claims including a d.c. motor connected between the load terminals.
  5. 5. A charger/controller as claimed in any of the preceding claims including alternative controllers for the chopper in the two modes of operation.
  6. 6. A charger/controller as claimed in Claim 5 in which the chopper controller for use during the charging mode of operation is arranged to operate at supersonic frequency.
  7. 7. A charger/controller as claimed in Claim 5 or Claim 6 in which the chopper controller for operation during the charging mode is arranged to be controlled in response to charging current and/or battery voltage.
  8. 8. A charger/controller as claimed in any of Claims 5-7 in which the chopper controller for controller operation is arranged to operate at a sonic frequency.
  9. 9. A charger/controller as claimed in any of Claims 5-8 in which the chopper controller for use during controller operation is arranged to operate in response to motor current, and/or load demand.
    10, A battery charger/motor controller arranged substantially as herein specifically described with reference to the accompanying drawing.
GB8104446A 1981-02-12 1981-02-12 Battery Charger/Controller Withdrawn GB2093285A (en)

Priority Applications (3)

Application Number Priority Date Filing Date Title
GB8104446A GB2093285A (en) 1981-02-12 1981-02-12 Battery Charger/Controller
SE8200833A SE8200833L (en) 1981-02-12 1982-02-12 BATTERY CHARGER / MOTOR CONTROL
DE19823204901 DE3204901A1 (en) 1981-02-12 1982-02-12 BATTERY CHARGER AND ENGINE CONTROL DEVICE

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB8104446A GB2093285A (en) 1981-02-12 1981-02-12 Battery Charger/Controller

Publications (1)

Publication Number Publication Date
GB2093285A true GB2093285A (en) 1982-08-25

Family

ID=10519661

Family Applications (1)

Application Number Title Priority Date Filing Date
GB8104446A Withdrawn GB2093285A (en) 1981-02-12 1981-02-12 Battery Charger/Controller

Country Status (3)

Country Link
DE (1) DE3204901A1 (en)
GB (1) GB2093285A (en)
SE (1) SE8200833L (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2340678A (en) * 1998-06-17 2000-02-23 Oldham Crompton Batteries Limi Drive system for battery powered vehicles

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4013506C3 (en) * 1990-04-27 1999-07-29 Baumueller Nuernberg Gmbh Electric drive system with a rechargeable DC voltage source
DE102017206497B4 (en) 2017-04-18 2022-02-03 Audi Ag Charging device and method for charging an electrical energy store of a vehicle, and motor vehicle

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2340678A (en) * 1998-06-17 2000-02-23 Oldham Crompton Batteries Limi Drive system for battery powered vehicles
GB2340678B (en) * 1998-06-17 2001-04-18 Oldham Crompton Batteries Ltd Drive system for battery powered vehicles

Also Published As

Publication number Publication date
SE8200833L (en) 1982-08-13
DE3204901A1 (en) 1982-11-11

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