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Motorized vehicle

A technology of electric vehicles and electric power, applied in the direction of electric vehicles, electric vehicles, hybrid vehicles, etc., can solve the problems of increasing costs and achieve the effect of suppressing noise

Inactive Publication Date: 2009-07-08
TOYOTA JIDOSHA KK
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Therefore, electromagnetic noise from the converter may become a major problem when receiving and transmitting such electric power, but such problems are not considered in the above-mentioned publication.
[0006] In addition, when using an inverter for driving a motor to transmit and receive power between an external power supply or electric load and an on-vehicle power storage device, there is concern about the impact of surge voltage on the external power supply or external load. The above surge voltage is generated by the on / off operation of switching elements included in the converter
In the motor drive device disclosed in the above publication, an EMI filter is provided, but the cost increases accordingly.

Method used

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Examples

Experimental program
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Effect test

no. 1 approach

[0034] figure 1 It is an overall block diagram of a hybrid vehicle as an example of the electric vehicle of the present invention. refer to figure 1 , the hybrid vehicle 100 includes an engine 4 , motor generators MG1 and MG2 , a power distribution mechanism 3 , and wheels 2 . In addition, hybrid vehicle 100 further includes power storage device B, inverters 10 and 20 , ECU (Electronic Control Unit: Electronic Control Unit) 30 , drive circuit 40 , and AC switch 50 .

[0035] In addition, hybrid vehicle 100 further includes power line PL, ground line GL, capacitor C, U-phase lines UL1 and UL2, V-phase lines VL1 and VL2, W-phase lines WL1 and WL2, voltage sensor 80, current sensor 82 and 84. Rotation angle sensors 86 and 88. In addition, hybrid vehicle 100 further includes power lines ACL1 and ACL2 , and connector 70 .

[0036] This hybrid vehicle 100 runs with engine 4 and motor generator MG2 as power sources. Power split mechanism 3 is coupled to engine 4 and motor genera...

no. 2 approach

[0102] In the second embodiment, in the charging and discharging mode, the switching speeds of power transistors Q11 to Q16 and Q21 to Q26 included in inverters 10 and 20 are reduced. Thereby, the surge voltage which accompanies the switching operation of a transistor is reduced, and the noise to the commercial power supply 92 connected to the connector 70 is suppressed.

[0103] The overall configuration of the hybrid vehicle of the second embodiment is the same as figure 1 The hybrid vehicle 100 of the first embodiment shown is the same.

[0104] Figure 10 is a circuit diagram of the drive circuit 40 in the second embodiment. In addition, in Figure 10 2 typically shows a circuit for turning on / off driving the power transistor Q11 included in the inverter 10, and the same circuits are respectively provided for the other power transistors Q12 to Q16 and Q21 to Q26.

[0105] refer to Figure 10 The drive circuit 40 includes inverter circuits IV1 and IV2, AND gates AD1-AD...

no. 3 approach

[0116] In this third embodiment, a configuration is shown in which power storage device B is charged from commercial power supply 92 using one motor generator.

[0117] Figure 11 It is an overall block diagram of the electric vehicle of the third embodiment. refer to Figure 11 100C of electric powered vehicles includes power storage device B, inverter 20 , motor generator MG2 , wheels 2 , ECU 30C, drive circuit 40 , and AC switch 50 . Electric vehicle 100C further includes power line PL, ground line GL, capacitor C, U-phase line UL2 , V-phase line VL2 , W-phase line WL2 , voltage sensor 80 , current sensor 84 , and rotation angle sensor 88 .

[0118] In addition, electric vehicle 100C further includes rectifier circuit 28 , power lines ACL2 and ACL3 , and connector 70 .

[0119] The rectification circuit 28 includes diodes D31, D32. The cathode of diode D31 is connected to power supply line PL, the anode of diode 31 is connected to the cathode of diode 32, and the anode ...

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PUM

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Abstract

During charging / discharging modes, inverters (10,20) perform power conversions between a battery apparatus (B) and mains (92) that is electrically connected to neutral points (N1,N2) via power lines (ACL1,ACL2). During the charging / discharging modes, an ECU (30) sets the carrier frequencies of the inverters (10,20) to be higher than during a running mode. During the charging / discharging modes, a drive circuit (40) drives the inverters (10,20) by use of gate resistances greater than during the running mode.

Description

technical field [0001] The present invention relates to an electric vehicle, and more particularly to an electric vehicle capable of transmitting and receiving electric power between a power storage device and a power source or an electric load external to the vehicle. Background technique [0002] Japanese Patent Application Laid-Open No. 4-295202 discloses a motor drive device capable of transmitting and receiving electric power between an AC power supply outside a vehicle and a vehicle-mounted DC power supply. This motor drive device has a battery, inverters (inverters) IA and IB, induction motors MA and MB, and a control unit. Induction motors MA, MB include Y-connected windings CA, CB, respectively. Input / output ports are connected to the neutral points NA, NB of the windings CA, CB via an EMI filter. Inverters IA, IB are provided corresponding to induction motors MA, MB, respectively, and are connected to windings CA, CB, respectively. Inverters IA, IB are connected...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02P27/06B60K6/445B60L11/18B60W10/08B60W10/26B60W20/00B60L50/10
CPCY02T10/6217Y02T10/7022B60L11/1812B60L11/1816Y02T90/14B60L2220/12Y02T90/121Y02T10/7005B60K6/445B60L11/005B60L15/007Y02T10/705H02P2209/01B60L11/123B60L2220/54B60L11/1814B60W10/08B60L2240/423Y02T10/6239B60L11/1811Y02T10/641Y02T90/127B60W2710/083B60K6/365B60L11/1851B60W20/00B60L9/28Y02T10/7258B60K1/02B60L11/14Y02T10/7077B60W10/26Y02T10/7088Y02T10/642B60L11/1801B60L2220/14Y02T10/7072B60L53/14B60L53/22B60L50/53B60L50/40B60L50/61B60L50/16B60L53/20B60L53/24B60L58/10Y02T10/62Y02T10/64Y02T10/70Y02T10/72H02P27/06B60K6/26B60W20/15Y02T90/12
Inventor δΉ…ι‡Žθ£•ι“
Owner TOYOTA JIDOSHA KK