JP2007252061A - Electric run drive device of vehicle, and charger for vehicle - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To enhance the lifetime even when charging of a battery is quickened, and to achieve it with a simple arrangement. <P>SOLUTION: The run driver 1 has a section 12 storing various charge processing modes when a battery 5 is charged, and a section 21 storing the record of discharge of the battery 5 for a motor 2. When the battery 5 is charged, a charge processing mode corresponding to the discharge record in the discharge processing storage section 21 is selected among various charge processing modes in the charge processing storage section 12 and the battery 5 is charged based on the mode thus selected. The charge processing storage section 12 is provided in a charger 3 and the discharge processing storage section 21 is provided in a motor controller 6. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

  The present invention relates to an electric traveling drive apparatus for a vehicle, which includes an electric motor for driving driving and a battery such as a lead battery that supplies electric power to the electric motor by electric discharge to enable driving of the electric motor.

  Conventionally, there is an electric traveling drive apparatus for a vehicle described in Patent Document 1 below. According to this publication, the travel drive device includes an electric motor for travel drive, a battery that is a lead battery that can be charged by a non-vehicle charger, and can be discharged toward the electric motor. And a motor controller that controls the amount of discharge from the battery to the electric motor in accordance with the operation of the driver.

  When the driver operates an operation unit such as an accelerator pedal to drive the vehicle, the amount of discharge from the battery to the motor is automatically determined according to the operation amount of the operation under the control of the motor controller. The vehicle is accelerated and decelerated. As a result, the vehicle can travel at the travel speed desired by the driver.

On the other hand, when the vehicle travels for a long time and the amount of discharge of the battery increases, that is, when the amount of stored power decreases, the vehicle is stopped and the battery is charged by the non-vehicle charger. Then, the stored amount of electricity is recovered.
JP 2004-221521 A

  By the way, when charging the battery, it is preferable that the charging is performed as quickly as possible. Therefore, it is conceivable to increase the charging current by the charger so that the battery is charged in a short time.

  In the above case, when the battery discharge amount is large, that is, when the storage amount is small, the charging can be achieved quickly in a short time by increasing the charging current as described above. In addition, when the amount of electricity stored in the battery is small as described above, even if the charging current is increased, the overcharge is suppressed from being excessively increased as the battery characteristics, and the battery is prevented from generating heat.

  However, when the battery discharge amount is small, that is, when the amount of stored electricity is large, if the charging current is increased as described above, overcharging tends to increase as a characteristic of the battery. In this case, the battery generates heat and becomes high temperature, which is not preferable because it causes the life of the battery to be shortened early.

  Therefore, it is considered to provide a battery control device that detects the charged amount of the battery at the time of charging, automatically determines the magnitude of the charging current according to the detected charged amount, and charges the charged current. It is done. However, when such a battery control device is simply provided, the number of parts of the traveling drive device of the vehicle increases, resulting in a problem that the configuration becomes complicated.

  The present invention has been made paying attention to the above situation, and an object of the present invention is to quickly charge the battery when the battery is used as the power source of the electric motor for driving in the vehicle. But to be able to improve its lifetime and to achieve this with a simple configuration.

  Another object of the present invention is to make the vehicle compact and lightweight.

According to the first aspect of the present invention, the electric motor 2 for driving driving and the battery charger 3 that is not mounted on the vehicle can be charged, while the battery 5 that can be discharged toward the electric motor 2 and the operation of the driver. An electric travel drive device for a vehicle comprising a motor controller 6 for controlling a discharge amount from the battery 5 to the electric motor 2;
A charging process storage unit 12 that stores various charging processing modes when the battery 5 is charged, and a discharging process storage unit 21 that stores a history of discharging of the battery 5 with respect to the electric motor 2 are provided. The charging process mode corresponding to the discharge history in the discharging process storage unit 21 is selected from the various charging process modes in the charging process storage unit 12, and the battery 5 is charged based on the selected mode. To be
The charging process storage unit 12 is provided in the charger 3, while the discharge process storage unit 21 is provided in the motor controller 6.

The invention of claim 2 is a non-vehicle-mounted charger 3 that can charge a battery 5 that is a driving source of a vehicle.
A charging processing storage unit 12 that stores various charging processing modes when the battery 5 is charged, and a communication processing unit 14 that allows the discharging history of the battery 5 just before charging to be input to the charging processing storage unit 12. When the battery 5 is charged, the charging process mode corresponding to the discharge history of the battery 5 input to the charging process storage unit 12 through the communication processing unit 14 is various in the charging process storage unit 12. The charging process mode is selected, and the battery 5 is charged based on the selected mode.

  According to a third aspect of the invention, in addition to the first aspect of the invention, the battery 5 is a lead battery.

  According to a fourth aspect of the invention, in addition to the second aspect of the invention, the battery 5 is a lead battery.

  In this section, the reference numerals appended to the above terms are not to be construed as limiting the technical scope of the present invention to the section “Example” described later or the contents of the drawings.

  The effects of the present invention are as follows.

The invention of claim 1 is a battery that can be charged by an electric motor for driving driving and a non-vehicle charger, and that can be discharged toward the electric motor. In an electric travel drive device for a vehicle, including a motor controller that controls the amount of discharge to the electric motor,
A charge processing storage unit that stores various charge processing modes when the battery is charged; and a discharge processing storage unit that stores a history of discharge of the battery with respect to the electric motor. The charging process mode corresponding to the discharge history in the storage unit is selected from the various charging process modes in the charging process storage unit, and the battery is charged based on the selected mode.

  For this reason, a charging process mode corresponding to the amount of charge of the battery based on the discharge history of the battery in the discharge process storage unit is selected, and based on this mode, the charging current by the charger for the battery is increased. Can be controlled. That is, the battery can be charged with a charging current having a magnitude corresponding to the amount of electricity stored. Therefore, even when the battery is quickly charged, the overcharge of the battery is suppressed from becoming too large, and the heat generation can be suppressed, so that the life of the battery can be improved.

  Moreover, while providing the said charge process memory | storage part in a charger, the discharge process memory | storage part is provided in the motor controller.

  For this reason, compared with providing the battery control apparatus which has the said charge process memory | storage part and the discharge process memory | storage part separately, the number of parts of a traveling drive apparatus can be decreased. Therefore, the improvement of the battery life described above is achieved with a simple configuration and at a low cost.

  In addition, as described above, the charging process storage unit is provided in the charger. For this reason, compared with providing the said charge process memory | storage part in a vehicle, it becomes possible to make the structure of this vehicle simple or lightweight. Therefore, it is extremely useful for vehicles that are strongly required to be compact and lightweight.

The invention of claim 2 is a non-vehicle-mounted charger that can charge a battery that is a driving source of a vehicle.
A charging processing storage unit that stores various charging processing modes when the battery is charged; and a communication processing unit that allows a history of discharging of the battery immediately before the charging to be input to the charging processing storage unit. When charging, a charging process mode corresponding to a battery discharge history input to the charging process storage unit through the communication processing unit is selected from various charging process modes in the charging process storage unit. The battery is charged based on the selected mode.

  For this reason, a charge processing mode corresponding to the large amount of charge of this battery based on the battery discharge history is selected, and based on this mode, the magnitude of the charge current by the charger for this battery can be controlled. The That is, the battery can be charged with a charging current having a magnitude corresponding to the amount of electricity stored. Therefore, even when the battery is quickly charged, it is possible to suppress the overcharge of the battery from being excessively large and suppress the heat generation, thereby improving the life of the battery.

  Further, as described above, the charging processing storage unit and the communication processing unit are provided in the charger. For this reason, it becomes possible to make the configuration of the vehicle simpler and lighter than providing the charging processing storage unit and the communication processing unit in the vehicle. Therefore, it is extremely useful for vehicles that are strongly required to be compact and lightweight.

  In the third and fourth aspects of the invention, the battery is a lead battery.

  Here, in general, the lead battery can hold a larger capacity and is highly versatile. Therefore, as described above, the lead battery is applied to the vehicle. For this reason, the lead battery can sufficiently cope with the large energy required by the vehicle and the price reduction.

  The present invention relates to an electric travel drive device for a vehicle according to the present invention, in which, when a battery is used as a power source for an electric motor for travel drive of a vehicle, the life of the battery can be improved even when the battery is quickly charged. In order to achieve the object of achieving this with a simple configuration, the best mode for carrying out the present invention is as follows.

  In other words, the vehicle driving device includes a motor for driving driving, a battery that can be charged by a non-vehicle charger, a battery that can be discharged toward the motor, and a battery that operates according to the driver's operation. A motor controller that controls the amount of discharge from the motor to the electric motor, a charging processing storage unit that stores various charging processing modes when the battery is charged, and a discharging processing storage unit that stores the discharge history of the battery with respect to the electric motor With.

  When the battery is charged, a charge processing mode corresponding to a discharge history in the discharge processing storage unit is selected from various charge processing modes in the charge processing storage unit, and the battery is based on the selected mode. Is charged. The charge processing storage unit is provided in the charger, while the discharge processing storage unit is provided in the motor controller.

  In order to explain the present invention in more detail, an embodiment thereof will be described with reference to the accompanying drawings.

  In the figure, reference numeral 1 denotes an electric travel drive device provided in a vehicle such as a golf cart in a golf course.

  The travel drive device 1 can be connected to and disconnected from a travel drive motor 2 supported by a vehicle body (not shown) and interlocked with drive wheels, and a non-vehicle charger 3 by a coupling 4. A battery 5 that is a lead battery that is connected so as to be rechargeable, and a motor controller 6 that controls a discharge amount (power supply amount) from the battery 5 to the electric motor 2 in accordance with an operation amount of the driver. I have. The battery 5 serves as a travel drive source for the vehicle.

  The charger 3 includes an input unit 10 that receives an alternating current from a commercial power source 9 (AC 100 V, 50/60 Hz) provided in a charging stand and the like, and performs a step-down process. The output unit 11 that is exchanged and output to the battery 5, the charging process storage unit 12 that stores various charging process modes when the battery 5 is charged, and the charging process storage unit 12 store One of the various charge processing modes is selected, and a communication signal can be communicated with the charge control processing unit 13 for charging the battery 5 based on this mode and the motor controller 6 described later. And a communication processing unit 14.

  The charging process mode stored in the charging process storage unit 12 is stored as a map. Among these modes, the “first mode” is that the amount of discharge immediately before charging of the battery 5 is large, that is, the charging current of the charger 3 with respect to the battery 5 is increased when the amount of stored electricity is small. It is. The “second mode” is to reduce the charging current of the charger 3 with respect to the battery 5 when the amount of discharge immediately before the charging of the battery 5 is small, that is, when the charged amount is large.

  The motor controller 6 includes a motor drive current control unit 17 that controls a drive current to be supplied to the electric motor 2 from the battery 5, that is, a discharge current from the battery 5 to the electric motor 2, and an accelerator pedal that can be operated by the driver. The motor control processing unit 19 that detects an operation amount to the operation unit 18 and outputs a detection signal thereof, and the discharge from the battery 5 to the electric motor 2 based on the detection signal output from the motor control processing unit 19 A drive current calculation unit 20 that calculates current and executes control of the motor drive current control unit 17, and a discharge history of a previous discharge current of the battery 5 with respect to the electric motor 2, that is, a current storage amount of the battery 5 Can be connected and disconnected by the discharge processing storage unit 21 for storing the data, the communication processing unit 14 of the charger 3 and the coupling 22. Cormorant is connected and a communication processing unit 23, can communicate a communication signal with each other.

  When the driver runs the vehicle, the charger 3, the battery 5, and the motor controller 6 are separated from each other by operating the couplings 4 and 22. When the driver operates the operation unit 18, the operation amount to the operation unit 18 is detected by the motor control processing unit 19 of the motor controller 6. Based on the detection signal from the motor control processing unit 19, the discharge current of the battery 5 with respect to the motor 2 is calculated by the drive current calculation unit 20. Based on the calculation result of the drive current calculation unit 20, the motor drive current control unit 17 automatically controls the magnitude of the discharge current of the battery 5 with respect to the electric motor 2. That is, a predetermined discharge amount is automatically discharged from the battery 5 to the electric motor 2 in accordance with the operation amount to the operation unit 18. Then, the electric motor 2 outputs a driving force desired for the driver, and the vehicle is accelerated and decelerated. As a result, the vehicle can travel at the travel speed desired by the driver.

  In the above case, the discharge processing storage unit 21 stores the discharge history of the discharge current of the battery 5 with respect to the electric motor 2. And when the said vehicle drive | works for a long time etc., the discharge amount of the said battery 5 increases, ie, when the electrical storage amount reduces, a vehicle is stopped for the charge of the battery 5. FIG. When charging the battery 5, first, the charger 3, the battery 5, and the motor controller 6 are connected to each other by operating the couplings 4 and 22. Then, a charging current is supplied from the power source 9 to the battery 5 through the input unit 10, the output unit 11, and the coupling 4, so that the battery 5 is charged and the stored amount of electricity is recovered.

  Specifically, by connecting the charger 3 to the battery 5 and the motor controller 6, the battery 5 is a discharge history immediately before charging the battery 5 stored in the discharge processing storage unit 21 of the motor controller 6. Is stored in the charging control processing unit 13 through the communication processing unit 23 of the motor controller 6, the coupling 22, and the communication processing unit 14 of the charger 3.

  Here, when the current storage amount of the battery 5 stored in the discharge processing storage unit 21 of the motor controller 6 is small, among the charging processing modes stored in the charging processing storage unit 12 of the charger 3 The “first mode” is selected. The charging current of the charger 3 with respect to the battery 5 is increased by the “first mode”. Thereby, this charge is made quickly. In addition, when the current storage amount of the battery 5 is small as described above, even if the charging current is increased, as a characteristic of the battery 5, it is suppressed that the overcharge becomes too large, and the battery 5 generates heat. Is suppressed.

  On the other hand, when the current storage amount of the battery 5 stored in the discharge processing storage unit 21 of the motor controller 6 is large, of the charging processing modes stored in the charging processing storage unit 12 of the charger 3. The “second mode” is selected. The charging current of the charger 3 with respect to the battery 5 is reduced by the “second mode”. In this case, since the current charged amount of the battery 5 is large as described above, this charging is performed quickly. In this case, since the charging current is small, the overcharge of the battery 5 is suppressed from becoming too large, and the battery 5 is suppressed from generating heat.

  That is, according to the above configuration, the charge processing mode corresponding to the amount of stored power of the battery 5 based on the discharge history of the battery 5 in the discharge processing storage unit 21 is selected. The magnitude of the charging current by the charger 3 can be controlled. That is, the battery 5 can be charged with a charging current having a magnitude corresponding to the amount of electricity stored. Therefore, even when the battery 5 is quickly charged, the overcharge of the battery 5 is suppressed from becoming too large, and the heat generation can be suppressed. Therefore, the life of the battery 5 can be improved. .

  According to the above configuration, the charging process storage unit 12 and the communication processing unit 14 are provided integrally with the charger 3, while the discharge process storage unit 21 and the communication processing unit 23 are provided integrally with the motor controller 6. The charging processing storage unit 12 and the discharging processing storage unit 21 can be connected to each other and disconnected from each other through the communication processing units 14 and 23 so as to be able to communicate with each other.

  For this reason, compared with providing the battery control apparatus which has the said charge process memory | storage part 12 and the discharge process memory | storage part 21 separately, the number of parts of the traveling drive apparatus 1 can be decreased. Therefore, the improvement in the lifetime of the battery 5 described above is achieved with a simple configuration and at a low cost.

  Further, as described above, the charging process storage unit 12 and the communication processing unit 14 are provided in the charger 3. For this reason, it becomes possible to make the configuration of the vehicle simpler and lighter than providing the charging processing storage unit 12 and the communication processing unit 14 in the vehicle. Therefore, it is extremely useful for vehicles that are strongly required to be compact and lightweight.

  Further, as described above, the battery 5 is a lead battery.

  Here, in general, the lead battery can hold a larger capacity and is highly versatile. Therefore, as described above, the lead battery is applied to the vehicle. For this reason, the lead battery can sufficiently cope with the large energy required by the vehicle and the price reduction.

  In addition, the said vehicle is not limited to what drive | works only within the specified area like a golf course, The general vehicle which can drive | work a general public road may be sufficient. The battery 5 is not limited to a lead battery, and may be a nickel / cadmium battery or a silver oxide / zinc battery. The charge control processing unit 13 and the discharge process storage unit 21 may be provided inside the housing of the charger 3 or the motor controller 6 or may be provided outside.

It is an electric block diagram of a travel drive device.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Travel drive device 2 Electric motor 3 Charger 4 Coupling 5 Battery 6 Motor controller 9 Power supply 12 Charging process memory | storage part 13 Charge control process part 14 Communication process part 17 Motor drive current control part 18 Operation part 19 Motor control process part 20 Drive current Arithmetic unit 21 Discharge processing storage unit 22 Coupling 23 Communication processing unit

Claims (4)

The battery can be charged by the electric motor for driving and the non-vehicle charger, and the battery can be discharged toward the electric motor, and the discharge amount from the battery to the electric motor is controlled according to the operation of the driver. In an electric travel drive device for a vehicle comprising a motor controller that
A charge processing storage unit that stores various charge processing modes when the battery is charged; and a discharge processing storage unit that stores a history of discharge of the battery with respect to the electric motor. A charging process mode corresponding to a discharge history in the storage unit is selected from various charging process modes in the charging process storage unit, and the battery is charged based on the selected mode.
An electric travel drive apparatus for a vehicle, wherein the charging process storage unit is provided in the charger, and the discharge process storage unit is provided in the motor controller. In a non-vehicle charger that can charge a battery that is a driving source of a vehicle,
A charging processing storage unit that stores various charging processing modes when the battery is charged; and a communication processing unit that allows a history of discharging of the battery immediately before the charging to be input to the charging processing storage unit. When charging, a charging process mode corresponding to a battery discharge history input to the charging process storage unit through the communication processing unit is selected from various charging process modes in the charging process storage unit. A vehicle charger characterized in that a battery is charged based on a selected mode.   The electric travel drive apparatus for a vehicle according to claim 1, wherein the battery is a lead battery.   The vehicle charger according to claim 2, wherein the battery is a lead battery.

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