CN106864272B - The control device of electric vehicle - Google Patents

The control device of electric vehicle Download PDF

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Publication number
CN106864272B
CN106864272B CN201611114854.8A CN201611114854A CN106864272B CN 106864272 B CN106864272 B CN 106864272B CN 201611114854 A CN201611114854 A CN 201611114854A CN 106864272 B CN106864272 B CN 106864272B
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China
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mentioned
electric power
electric
forced
vehicle
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CN106864272A (en
Inventor
大野晃义
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Suzuki Motor Corp
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Suzuki Motor Corp
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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
    • B60L3/00—Electric devices on electrically-propelled vehicles for safety purposes; Monitoring operating variables, e.g. speed, deceleration or energy consumption
    • B60L3/04—Cutting off the power supply under fault conditions
    • 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
    • B60L3/00—Electric devices on electrically-propelled vehicles for safety purposes; Monitoring operating variables, e.g. speed, deceleration or energy consumption
    • B60L3/0023—Detecting, eliminating, remedying or compensating for drive train abnormalities, e.g. failures within the drive train
    • B60L3/003—Detecting, eliminating, remedying or compensating for drive train abnormalities, e.g. failures within the drive train relating to inverters
    • 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
    • B60L50/00—Electric propulsion with power supplied within the vehicle
    • B60L50/10—Electric propulsion with power supplied within the vehicle using propulsion power supplied by engine-driven generators, e.g. generators driven by combustion engines
    • B60L50/15—Electric propulsion with power supplied within the vehicle using propulsion power supplied by engine-driven generators, e.g. generators driven by combustion engines with additional electric power supply
    • 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
    • B60L50/00—Electric propulsion with power supplied within the vehicle
    • B60L50/10—Electric propulsion with power supplied within the vehicle using propulsion power supplied by engine-driven generators, e.g. generators driven by combustion engines
    • B60L50/16—Electric propulsion with power supplied within the vehicle using propulsion power supplied by engine-driven generators, e.g. generators driven by combustion engines with provision for separate direct mechanical propulsion
    • 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
    • B60L58/00—Methods or circuit arrangements for monitoring or controlling batteries or fuel cells, specially adapted for electric vehicles
    • B60L58/10—Methods or circuit arrangements for monitoring or controlling batteries or fuel cells, specially adapted for electric vehicles for monitoring or controlling batteries
    • 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
    • B60L7/00—Electrodynamic brake systems for vehicles in general
    • B60L7/10—Dynamic electric regenerative braking
    • 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
    • B60L2240/00—Control parameters of input or output; Target parameters
    • B60L2240/10—Vehicle control parameters
    • B60L2240/12—Speed
    • 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
    • B60L2240/00—Control parameters of input or output; Target parameters
    • B60L2240/10—Vehicle control parameters
    • B60L2240/14—Acceleration
    • 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
    • B60L2240/00—Control parameters of input or output; Target parameters
    • B60L2240/40—Drive Train control parameters
    • B60L2240/52—Drive Train control parameters related to converters
    • B60L2240/525—Temperature of converter or components thereof
    • 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
    • B60L2240/00—Control parameters of input or output; Target parameters
    • B60L2240/40—Drive Train control parameters
    • B60L2240/54—Drive Train control parameters related to 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
    • Y02T10/70—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

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  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Transportation (AREA)
  • Mechanical Engineering (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Sustainable Development (AREA)
  • Sustainable Energy (AREA)
  • Electric Propulsion And Braking For Vehicles (AREA)
  • Hybrid Electric Vehicles (AREA)

Abstract

A kind of control device of electric vehicle is provided, by inhibiting forced electric discharge resistance exceedingly to generate heat along with the discharge treatment of capacitor when vehicle collision, so as to maintain the characteristic of forced electric discharge resistance.Electric vehicle has motor generator (4), the 3rd electrical storage device (33) and inverter (50) of high pressure, the limiting resistance of the passive discharge resistance (57) and forced electric discharge resistance (67) that are connected in parallel with the block system relay (58) that the 3rd electrical storage device is set as to connection status or dissengaged positions and with the smoothing capacity device (55) of the prime of inverter, the HCU of above-mentioned electric vehicle is when detection vehicle collides, when being set as the high pressure cut-off state that the 3rd electrical storage device disconnects making the electric power storage power discharge of smoothing capacity device, connection relay (68) makes forced electric discharge resistance intermittently connect or disconnect and carry out intermittent discharge.

Description

The control device of electric vehicle
Technical field
Make the control device of the electric vehicle of its low pressure the present invention relates to the high-tension electricity made in capacitor electric discharge.
Background technique
Patent document 1 discloses following technology: carry high-tension battery electric vehicle in, battery and inverter it Between the relay for being set as dissengaged positions when a vehicle is in a collision is set, moreover, by resistor by electric discharge relay at this The smoothing capacitor being connected in parallel between battery and inverter is connected in series and forms discharge circuit.
Discharge circuit documented by the patent document 1 passes through the relay that will discharge when a vehicle is in a collision and is set as being powered State and form the circuit of electric power that release smoothing capacitor is filled with.
Existing technical literature
Patent document
Patent document 1: special open 2006-224772 bulletin
Summary of the invention
Problems to be solved by the invention
However, in the discharge circuit documented by patent document 1, when vehicle collides, battery and inverter it Between become dissengaged positions, smoothing capacitor by electric discharge relay connect to form discharge circuit with resistor in series when, have When can continue to resistor discharge.Resistor exceedingly generates heat sometimes at continuous discharge (energization) and causes characteristic bad Change.
Therefore, the purpose of the present invention is to provide a kind of control devices of electric vehicle, by inhibiting forced electric discharge electricity Resistance is exceedingly generated heat along with the discharge treatment of capacitor when vehicle collision, so as to maintain the characteristic of forced electric discharge resistance.
The solution to the problem
One mode of the invention of the control device of the electric vehicle to solve the above problems is mounted in electric vehicle, the electricity Motor-car has: high-tension battery；Smoothing capacity device carries out smoothing to the voltage for the direct current that above-mentioned high-tension battery provides Processing；The direct current that above-mentioned high-tension battery provides is converted to alternating current by inverter；Motor generator is used as motor Exchange electric drive that the above-mentioned inverter of Shi Youcong provides and also have the function of generator, is also equipped with: switch, it can The either side being switched in connection status and high pressure cut-off state, above-mentioned connection status are the above-mentioned high-tension battery of connection and energy The state of high-tension electricity is enough provided, above-mentioned high pressure cut-off state is to disconnect the state of the connection and cutting offer high-tension electricity； And forced electric discharge resistance, the electric power storage electric power forced electric discharge in above-mentioned smoothing capacity device, above-mentioned control dress can be made when being powered It sets and is configured to, above-mentioned electric vehicle has the collision detection portion that above-mentioned electric vehicle collides of detecting, above-mentioned collision detection portion When detection collides, above-mentioned control device puts the electric power storage electric power in above-mentioned smoothing capacity device intermittently to above-mentioned pressure Resistance release.
Invention effect
In this way, a mode according to the present invention, can be provided by inhibiting forced electric discharge resistance along with electric when vehicle collision The discharge treatment of container and exceedingly generate heat to maintain forced electric discharge resistance characteristic electric vehicle control device.
Detailed description of the invention
Fig. 1 is the figure for indicating to carry an example of the vehicle of the control device of the electric vehicle of one embodiment of the present invention, It is the block diagram for indicating its outline overall structure.
Fig. 2 is the circuit diagram for indicating the composition of inverter.
Fig. 3 is the flow chart for the control processing (control method) for illustrating to discharge the electric power storage electric power of smoothing capacity device.
Fig. 4 is to illustrate to execute at intermittent discharge corresponding with the variation of storage voltage value of inverter (smoothing capacity device) The chart of reason.
Description of symbols
1 vehicle
2 engines
4 motor generators (motor, generator)
7 gas-bag systems
9 ignition switches
10 HCU (control device)
14 INVCM
16 high pressure BMS
23 drive shafts (axle)
27 differential attachments
28 power transfer mechanisms
33 the 3rd electrical storage devices (high-tension battery)
34 high voltage power supply groups
50 inverters
55 smoothing capacity devices
57 passive discharge resistances
58 block system relays (switch)
67 forced electric discharge resistance
68 connection relays
70 SRSCM
71 acceleration transducers
75 vehicle speed sensor
76 velocity sensors
Specific embodiment
Hereinafter, embodiments of the present invention are described in detail with reference to accompanying drawings.FIG. 1 to FIG. 4 is to indicate an implementation of the invention The figure of the control device of the electric vehicle of mode.
In Fig. 1, vehicle 1 is constructed as hybrid electric vehicle, carries 4 conduct of engine 2 and motor generator of internal combustion engine type Driving source, and by travelling the rotation of driving wheel 5 via speed changer 3.That is, vehicle 1 is also constructed as by motor generator 4 Driving force traveling electric vehicle.
Vehicle 1 is equipped with HCU (Hybrid Control Unit: hybrid power control unit) 10, ECM (Engine Control Module: engine control module) 11 and TCM (Transmission Control Module: transmission control Module) 12 be used as control system, control engine 2, speed changer 3 respectively in the control program in memory according to pre-saving Driving with motor generator 4 is to realize efficient traveling.
Here, the vehicle 1 is configured to, the operation of firing key is executed according to the driver detected of ignition switch 9 The control processing that HCU10 is started or stoped, the HCU10 synthetically control the entirety of vehicle 1, and ECM11 controls engine 2, TCM12 controls speed changer 3.
Multiple cylinders are formed in engine 2.Engine 2 is configured to carry out each cylinder to include induction stroke, compression A series of 4 strokes of stroke, expansion stroke and exhaust stroke.
Vehicle 1 has the EV (Electric for stopping engine 2 and travelling by the driving force of motor generator 4 Vehicle: electric vehicle) mode.Engine 2 is automatically stopped according to preset stop condition in addition, vehicle 1 has And the idle stop function of according to the preset condition of restarting restarting engine 2.
In addition, ISG (Integrated Starter Generator: integrated starting generator) 20 and starter 21 connect Tie engine 2.ISG20 is waited by band 22 to be linked with the crankshaft 18 of engine 2.ISG20 is included by the way that power is supplied Rotation is to make the function of the motor of the starting of engine 2；And the rotary force inputted from crankshaft 18 is converted to the hair of electric power The function of motor.
The vehicle 1 has ISGCM (the Integrated Starter Generator Control as control system Module: integrated starting alternator control modules) 13, ISGCM13 controls according to the control program being pre-stored in memory The driving of ISG20 processed.
ISG20 is functioned as motor, thus make engine 2 from the halted state based on idle stop function again Starting.
Starter 21 includes motor (not shown) and pinion gear.Starter 21 makes crankshaft and rotating motor 18 rotations provide engine 2 rotary force when starting.In this way, engine 2 is started by starter 21, stop from based on idling Only the halted state of function is restarted by ISG20.
The driving rotary force exported from engine 2 is carried out speed change and transmitted by speed changer 3, passes through drive shaft (axle) 23 Rotate driving wheel 5.Speed changer 3 has: the normal engagement type gear 25 including parallel-axes gears mechanism；It is done by closed type The clutch 26 that formula clutch is constituted；Adjust the difference of the rotation speed (revolving speed) of the respective drive shaft 23 of driving wheel 5 of left and right Motivation structure 27；And actuator (not shown).
Speed changer 3 is configured to so-called AMT (Automated Manual Transmission: auto-manual speed change Device), driven by actuator according to the detection information of vehicle speed sensor 75 of rotation speed (revolving speed) etc. of detection drive shaft 23 The switching of the shift gear of dynamic gear 25 and the engagement separation of clutch 26.Differential attachment 27 is received by gear 25 The power of output and pass it to left and right drive shaft 23.
Motor generator 4 is linked by the power transfer mechanisms 28 such as chain and differential attachment 27.4 conduct of motor generator Motor functions.
In this way, vehicle 1 constructs that the power of both engine 2 and motor generator 4 can be used for the driving of vehicle Parallel connection type hybrid power system is travelled by the power that at least one party in engine 2 and motor generator 4 exports.
Motor generator 4 can also be functioned as generator, be generated electricity in Reduced Speed Now.
Here, motor generator 4 is directly linked by differential attachment 27 and power transfer mechanism 28 and drive shaft 23 Structure when driving wheel 5 rotates, while being rotated.As long as in addition, motor generator 4 connection for can transfer power to from Engine 2 not necessarily links with differential attachment 27 to any one place in the power transfer path of driving wheel 5.
In addition, vehicle 1 has: the 1st electrical storage device 30；Low-tension supply group 32 comprising the 2nd electrical storage device 31；Include the 3rd The high voltage power supply group 34 of electrical storage device 33；High-tension cable 35；And low-voltage cable 36.
1st electrical storage device 30, the 2nd electrical storage device 31 and the 3rd electrical storage device 33 are made of the secondary cell that can be charged.2nd Electrical storage device 31 is high output compared with the 1st electrical storage device 30 and can be with the electrical storage device of high-energy density electric power storage.2nd electric power storage Device 31 can be charged compared with the 1st electrical storage device 30 with the short period.1st electrical storage device 30 and the 2nd electrical storage device 31 are to produce The mode of the output voltage of raw about 12V sets the A-battery of number of single battery etc..In the present embodiment, the 1st Electrical storage device 30 includes lead-acid battery, and the 2nd electrical storage device 31 includes lithium ion battery.In addition, the 2nd electrical storage device 31 can also be with It is nickel hydrogen storage battery.
3rd electrical storage device 33 is set in a manner of generating the voltage higher than the 1st electrical storage device 30 and the 2nd electrical storage device 31 Number of single battery etc. is to constitute high-tension battery.Such as generate the output voltage of 100V.3rd electrical storage device 33 includes example Such as lithium ion battery.In addition, the 3rd electrical storage device 33 is also possible to nickel hydrogen storage battery.
High voltage power supply group 34 also has inverter 50, INVCM14 and high pressure BMS16 other than the 3rd electrical storage device 33, Form high-tension circuit.High voltage power supply group 34 is connected as that electric power can be supplied to motor generator 4 by high-tension cable 35.
It is equipped in the vehicle 1 as the general load 37 of electric loading and by protection load 38.It is general to load 37 and protected Shield load 38 is the electric loading other than starter 21 and ISG20.
It is the electric loading of the power supply to be aspired for stability always by protection load 38.This is by protection load 38 for example, Prevent the stabilization control device 38A of the sideslip of vehicle 1；Electric the electronic of auxiliary is carried out to the operating force of deflecting roller (not shown) to help Power steering control device 38B；And car light 38C.In addition, by protection load 38 further include instrument board (not shown) lamp & lantern and Meters and auto-navigation system.
The power supply that general load 37 not aspire for stability compared with by protection load 38 is that the momentary electricity used is negative It carries.General load 37 conveys the electronic cooling fan of cooling wind for example including wiper (not shown) and to engine 2.
Low-tension supply group 32 also has switch 40,41 and low pressure BMS15 other than the 2nd electrical storage device 31.1st electric power storage Device 30 and the 2nd electrical storage device 31 are connected as can be by low-voltage cable 36 to starter 21, ISG20, as the general of electric loading Load 37 and by 38 supply electric power of protection load.1st electrical storage device 30 and the 2nd electrical storage device 31 are loaded with by protection in parallel 38 electrical connections.
Switch 40 is set to the 2nd electrical storage device 31 and by the low-voltage cable 36 between protection load 38.Switch 41 is set to the 1st Electrical storage device 30 and by protection load 38 between low-voltage cable 36.
The vehicle 1 has INVCM (the Invertor Control Module: inverter control mould as control system Block) 14, low pressure BMS (Battery Management System: battery management system) 15 and high pressure BMS16, according to preparatory The control program being stored in memory controls driving or the 1st electrical storage device 30, the 2nd electrical storage device 31 of inverter 50 respectively With the charge and discharge of the 3rd electrical storage device 33.
INVCM14 control inverter 50 and the alternating current for being applied to high-tension cable 35 and the 3rd electrical storage device 33 will be applied to Direct current mutually convert.For example, INVCM14 makes motor generator 4 carry out power running (Japanese original text: Lixing) movement When, the direct current that the 3rd electrical storage device 33 releases is converted to by alternating current by inverter 50 and is supplied to motor generator 4.In addition, INVCM14 is issued motor generator 4 by inverter 50 when making motor generator 4 carry out regeneration actions Alternating current is converted to direct current and charges to the 3rd electrical storage device 33.
Low pressure BMS15 by control switch 40,41 disconnection closure control the 2nd electrical storage device 31 charge and discharge and to By the power supply of protection load 38.Low pressure BMS15 closes switch 40 when engine 2 is in stopping by idle stop Merge and disconnect switch 41, is thus protected 38 supply of load from 31 pairs of the 2nd electrical storage device of high output and high-energy density Stable electric power.
Low pressure BMS15 is started when making engine 2 using starter 21 and is made using IS G20 through idle stop control When making and restarting in the engine 2 stopped, switch 40 is closed and disconnects switch 41, thus from the 1st electrical storage device 30 pairs of starters 21 or ISG20 supply electric power.It is closed and in the state of be disconnected switch 41 by switch 40, also from the 1 electrical storage device 30 is to general 37 supply electric power of load.
High pressure BMS16 manages the states such as the residual capacity of the 3rd electrical storage device 33.Side of the HCU10 to cooperate with INVCM14 Formula controls high pressure BMS 16 based on the velocity sensor 76 of the rotation speed (revolving speed) of detection motor generator 4, to make The motor generator 4 efficiently drives.
In this way, the 1st electrical storage device 30 is at least to starter 21, the ISG20 as the starter for starting engine 2 With general 37 supply electric power of load.2nd 31 pairs of electrical storage device is by 38 supply electric power of protection load.
By low pressure BMS15 control switch 40,41, so that power supply of the 2nd electrical storage device 31 to be aspired for stability always By protection load 38 supply electric power.
In this way, low pressure BMS15 had both considered that the charged state of the 1st electrical storage device 30 and the 2nd electrical storage device 31 (charged surplus Surplus) and make the request for generally loading 37 and being worked by protection load 38, and preferentially make to be protected the steadily work of load 38 Make, and suitably controls switch 40,41.
Also, vehicle 1, which is laid with to be used to form, follows CAN (Controller Area Network: controller LAN) Etc. the interior LAN (Local Area Network: local area network) of standards CAN communication line 48,49.HCU10 passes through CAN communication Line 48 is connect with INVCM14 and high pressure BMS16.HCU10, INVCM14 and high pressure BMS16 by CAN communication line 48 mutually into The transmitting and receiving of the signals such as row control signal.In addition, HCU10 by CAN communication line 49 and ECM11, TCM12, ISGCM13 and Low pressure BMS15 connection.HCU10, ECM11, TCM12, I SGCM13 and low pressure BMS15 are mutually carried out by CAN communication line 49 Control the transmitting and receiving of the signals such as signal.
Here, as shown in Fig. 2, switch element 51u~51w, the 61u~61w and three-phase full-wave bridge 50B of inverter 50 connect It connects, each switch element 51u~51w, 61u~61w and diode 53u~53w, 54u~54w Opposite direction connection.In inverter 50 In, PWM control is carried out to each switch element 51u~51w, 61u~61w according to the control signal from INVCM14, as a result, Three-phase alternating current is supplied to coil 4u~4w of each phase of the UVW of motor generator 4 and is functioned as motor.Inversion Device 50 functions the exchange issued as generator to motor generator 4 by each diode 53u~53w, 54u~54w Electricity carries out full-wave rectification and charges to the 3rd electrical storage device 33.
Prime of the inverter 50 in 33 side of the 3rd electrical storage device of three-phase full-wave bridge 50B is connected in parallel to smoothing capacity device 55, passive discharge resistance 57 and forced electric discharge resistance 67.
Smoothing capacity device 55 plays the following functions: putting aside the direct current discharged from the 3rd electrical storage device 33 and discharges the electric power storage Electric power, to keep the voltage value for being supplied to three-phase full-wave bridge 50B stable and make its smoothing.Ignition switch 9 detect driver into After capable igniter is connected, HCU10 starts and holds 1 global transfer of fleet vehicles starting to process to traveling preparation state, should The electric power storage of smoothing capacity device 55 is the execution with the processing and starts.
Passive discharge resistance 57 connect always with smoothing capacity device 55 and forms discharge circuit.Passively discharge resistance 57 is By the electric power storage electric power control that is discharged from smoothing capacity device 55 it is Weak current and is set as high resistance.That is, passive electric discharge electricity Resistance 57 is functioned as the electric power storage electric power in limitation smoothing capacity device 55 by the limiting resistance that large capacity discharges.
The passive discharge resistance 57 the high pressure discharged from the 3rd electrical storage device 33 electric power storage electric power to smoothing capacity device 55 Deng supply be cut off when, so that the electric power storage flow of electrical power of high pressure discharged from the smoothing capacity device 55 is disappeared by executing The so-called passive discharge treatment of consumption, to form the voltage value for reducing the electric power storage electric power that smoothing capacity device 55 is put aside and make The circuit (so-called passive discharge circuit) of its low pressure.
Forced electric discharge resistance 67 is arranged to connect or disconnect by connection relay 68 with smoothing capacity device 55.It forces Discharge resistance 67 is set as the resistance value lower than passive discharge resistance 57, makes the electric power storage electric power in smoothing capacity device 55 than making Big electric current discharges when with the electric discharge of passive discharge resistance 57.That is, forced electric discharge resistance 67 is also as limitation smoothing capacity The limiting resistance of the large capacity electric discharge of electric power storage electric power in device 55 functions.
It connects relay 68 and forced electric discharge resistance 67 is connected in series, it is as described later by the INVCM14 to cooperate with HCU10 Ground switches over control, thus selection make high-tension electricity in smoothing capacity device 55 be powered to forced electric discharge resistance 67 and It the forced electric discharge state (connection status) forcibly discharged and cuts off in the electric discharge dissengaged positions (off-state) of the electric discharge Either side.
It is judged as to have occurred in HCU10 and needs to make the feelings of the electric power of the electric power storage in smoothing capacity device 55 rapidly forced electric discharge When condition, connection relay 68 is set as connection status and forms discharge circuit, as a result, the forced electric discharge resistance 67 with passively put Resistance 57 is powered by the electric power storage electric power that the smoothing capacity device 55 is put aside together and consumes discharge current.
In addition, connection relay 68 will be cut off in the off state via the discharge circuit of forced electric discharge resistance 67, forbid Electric power storage electric power in smoothing capacity device 55 is discharged to forced electric discharge resistance 67.
In addition, inverter 50 has the block system relay configured between the 3rd electrical storage device 33 and smoothing capacity device 55 (switch) 58.Block system relay 58 switches over control by the INVCM14 to cooperate with HCU10.
In addition, block system relay 58, connection relay 68 are that switching allows the connection status of electric current passed through and by electric current The dissengaged positions by cutting derailing switch (switch), can be contact switch type, relay switch type, two poles Any one of pipe switchtype etc., as long as considering that current capacity or insulation pressure resistance or service life etc. are configured.
Block system relay 58 configures between the 3rd electrical storage device 33 and smoothing capacity device 55, switches over control by HCU10 System, to select that the high pressure that the high-tension electricity that discharged from the 3rd electrical storage device 33 is downstream supplied state (connection can be applied State) and the high pressure cut-off state (off-state) of cutting off the supply in either side.
Also, HCU10 have occurred ignition switch 9 detect driver carry out igniter shutdown stopping request when, with INVCM14 cooperation, is set as off-state for block system relay 58 and stops discharging from the 3rd electrical storage device 33, by smoothing capacity device Electric power storage electric power in 55 is discharged to passive discharge resistance 57 and is consumed.
HCU10 discharges the electric power storage electric power put aside in smoothing capacity device 55 to passive discharge resistance 57 to reduce as a result, Voltage value and make its low pressure.
In addition, HCU10 is in the traveling preparation request that the igniter connection that the detection driver of ignition switch 9 carries out has occurred When, it cooperates with INVCM14, block system relay 58 is set as closed state (connection status) and is started again at from the 3rd electrical storage device 33 electric discharges, make smoothing capacity device 55 boost to assigned voltage.
HCU10 makes to make in the savings to smoothing capacity device 55 of the discharged power from the 3rd electrical storage device 33 by three as a result, The voltage value that phase full-wave bridge 50B is supplied to the electric power of motor generator 4 stabilizes (smoothing).
In addition, vehicle 1 is equipped with gas-bag system 7, above-mentioned gas-bag system 7 is in acceleration transducer 71 when colliding In the case where itself being applied external force sharply Deng detection vehicle 1, expand air bag (not shown) promptly to protect including driving Passenger including member.Gas-bag system 7 is, in the SRSCM (Supplemental functioned as control system Restraint System Control Module: supplemental restraint system control module) 70 from acceleration transducer 71 receive The starting of gas-bag system 7 is controlled when to collision sensing signal according to the control program being pre-stored in memory.In addition, Gas-bag system is the common name of supplemental restraint system (Supplemental Restraint System).
SRSCM70 connect with CAN communication line 48 and can send control signal to HCU10, connects from acceleration transducer 71 The starting control that air bag is executed when receiving collision sensing signal, in addition, the collision sensing signal of high pressure cut-off is passed through CAN Communication line 48 is sent to HCU10.That is, the acceleration transducer 71 of gas-bag system 7 constitutes collision detection portion.
In addition, in the present embodiment, the generation of collision etc. will be detected by the acceleration transducer 71 of gas-bag system 7 The case where be illustrated as an example, but not limited to this.Such as the case where gas-bag system 7 detects collision otherwise Under, as long as being similarly to detect signal from SRSCM70 Receiving collision.In addition, in vehicle 1 in order to obtain acceleration information And in the case where carrying another acceleration transducer, acceleration information can also be directly received from the acceleration transducer, according to The acceleration information changes to detect the generation of collision etc..
Also, HCU10 is when receiving collision sensing signal from the SRSCM70 of gas-bag system 7, by that will cut off relay Device 58 is switched to off-state and is set as high pressure cut-off state, thereby executing the electric power storage of the high pressure in smoothing capacity device 55 is electric Connection relay 68 is intermittently switched to disconnection shape moreover, executing by the processing that power is discharged by passive discharge resistance 57 State and connection status and the processing for forming the discharge circuit including forced electric discharge resistance 67.
HCU10 needs to make when such as vehicle 1 collides etc. the feelings of the electric power storage power discharge of smoothing capacity device 55 as a result, Under condition, other than passive discharge resistance 57, moreover it is possible to forced electric discharge resistance 67 be made to pass through connection relay 68 and smoothing capacity device 55 intermittently connect and form discharge circuit, put by the stable discharging via passive discharge resistance 57 and with via pressure The case where resistance 67 is continuously powered is compared to the intermittent discharge that it can be inhibited to overheat, so as to make the storage in smoothing capacity device 55 Electric power is discharged in a short time with large capacity electric current.That is, HCU10 and connection relay 68 constitute the electronic of present embodiment Vehicle is as apparatus main body control device mounted.
At this point, HCU10 is being the feelings of preset threshold speed or more from the received detection information of vehicle speed sensor 75 Under condition, connection relay 68 is maintained off-state, pause is handled via the intermittent discharge of forced electric discharge resistance 67, is being incited somebody to action The forced electric discharge resistance 67 executes the only forced electric discharge with passive discharge resistance 57 for limiting resistance in the state of disconnecting.Here, Since motor generator 4 and drive shaft 23 directly link, vehicle speed sensor 75 can be both replaced and operating speed sensor 76 detection information is compared with threshold speed, can also be using both vehicle speed sensor 75 and velocity sensor 76 A trouble-free side in detection information.
In addition, HCU10 in the case where having started the intermittent discharge via forced electric discharge resistance 67, starts it and is had Timer function, to the intermittent discharge processing duration carry out timing.The HCU10 is to set in advance in the duration In the case where more than fixed time threshold, connection relay 68 is set as off-state, is stopped via forced electric discharge resistance 67 Intermittent discharge processing, by the forced electric discharge resistance 67 disconnect in the state of execute only with passive discharge resistance 57 for limitation The forced electric discharge of resistance.
Here, as above-mentioned threshold speed, as long as such as will be functioned than motor generator 4 not as generator The small speed of maximum speed to issue the vehicle 1 of the regenerated electric power by 55 electric power storage of smoothing capacity device is pre-set in HCU10's In memory.In addition, as above-mentioned time threshold, as long as such as will be than passing through the interval via forced electric discharge resistance 67 The maximum duration length that electric discharge spends the electric power whole forced electric discharge for the maximum capacity put aside in smoothing capacity device 55 Time is set in advance in the memory of HCU10.
HCU10 can suspend in the case where vehicle 1 is to be more than the speed traveling of threshold speed by via pressure as a result, The forced electric discharge processing that the intermittent discharge of discharge resistance 67 carries out.In addition, HCU10 is by via forced electric discharge resistance 67 In the case that the duration for the forced electric discharge processing that intermittent discharge carries out is more than time threshold, it can stop intermittently putting by this The forced electric discharge processing that electricity carries out.
Therefore, HCU10 is played in the rotation of motor generator 4 due to directly linking with drive shaft 23 as generator Function and when the parallel charging and discharging of smoothing capacity device 55, be avoided that its electric power storage electric power leads to forced electric discharge resistance 67 Electricity can implement the passive electric discharge only carried out by high-resistance passive discharge resistance 57, persistently carry out the electric power storage of smoothing capacity device 55 The discharge treatment of electric power.
Thus, HCU10 will not make the electric power storage for the smoothing capacity device 55 for being filled with the regenerated electric power that motor generator 4 is issued Electric power be powered in a long time to forced electric discharge resistance 67 continue carry out forced electric discharge processing, can prevent due to it is long when Between energization and lead to the deterioration in characteristics of forced electric discharge resistance 67.
Specifically, HCU10 control according to shown in the flow chart for the control program execution 3 being stored in memory Processing, makes the electric power storage electric power forced electric discharge in smoothing capacity device 55.
Firstly, HCU10 confirms vehicle 1 and has occurred receiving collision sensing signal from the SRSCM70 of gas-bag system 7 When collision (step S11), start had timer function (step S12), have passed through in confirmation preset defined After time allowance (step S13), starts control processing when vehicle 1 collides, block system relay 58 is set as disconnected as a result, Open state and so that smoothing capacity device 55 and the 3rd electrical storage device 33 is disconnected the application (step S14) for carrying out cutoff high electric power.
It has passed through in the state that the execution of control processing of the inverter 50 when vehicle 1 collides is not released from as a result, After defined time allowance, it is transferred to high pressure cut-off state and is first begin to the only electric via passive electric discharge of smoothing capacity device 55 The passive discharge treatment of resistance 57.
Then, HCU10 the detection information based on vehicle speed sensor 75 confirmed vehicle 1 speed be less than preset Can determine that for halted state outage threshold (< threshold speed) afterwards (step S15), by timer function reset (step S16), later, further acknowledge whether the speed of (monitoring) vehicle 1 rises to setting speed threshold value or more (step S17).
In step S17, it is thus identified that when the speed of vehicle 1 does not reach setting speed threshold value or more, HCU10 is for example real Relay 68 will be connected and connects 2 seconds and disconnected 10 seconds intermittent via forced electric discharge resistance 67 by applying to be repeated Forced electric discharge processing.In the case where confirmed that vehicle 1 collides, start interval forced electric discharge.In addition, in aftermentioned step In the case where suspending in rapid S19, interval forced electric discharge (step S18) is started again at.
As a result, in the case where implementing the forced electric discharge processing of normal smoothing capacity device 55, in addition to implementing via passive Other than the passive electric discharge of discharge resistance 57, also implement disconnected via the connection by connecting relay 68 of forced electric discharge resistance 67 It drives capable intermittent forced electric discharge into, completes the low pressure of high voltage electric storage electric power.
At this point, for example, as shown in figure 4, the contravarianter voltage for becoming the inter-electrode voltage of smoothing capacity device 55 will connect When relay 68 connects 2 seconds, it is depressurized by the forced electric discharge of the large capacity via forced electric discharge resistance 67.At this point, forcing The temperature of discharge resistance 67 rises.Then, when the disconnection of relay 68 10 seconds will be connected, at a temperature of forced electric discharge resistance 67 Drop.Therefore, by the way that being connected and disconnected from for connection relay 68 is repeated, so as to not lead to the spy of forced electric discharge resistance 67 Property deterioration, and make 55 low pressure of smoothing capacity device.
In addition, in step S17, it is thus identified that when the speed of vehicle 1 reaches setting speed threshold value or more, HCU10 will be connected Relay 68 is set as off-state and suspends and handle (step S19) via the intermittent forced electric discharge of forced electric discharge resistance 67.
As a result, in the state that block system relay 58 is off-state and the 3rd electrical storage device 33 is disconnection, electronic hair Motor 4 is functioned as generator, thus when regenerated electric power is charged to smoothing capacity device 55, can by maintain to connect after The off-state of electric appliance 68 and make forced electric discharge resistance 67 from discharge circuit disconnect, be avoided that and persistently carry out making the regenerated electric power The discharge treatment that is powered to it and make its deterioration in characteristics.
Later, HCU10 confirmation continues from the beginning of the processing of the intermittent forced electric discharge of timer function institute timing Whether the time have passed through setting time threshold value (such as 60 seconds) or more (step S20), confirmed that the duration does not reach In the case where more than setting time threshold value, direct return step S17 and repeat same processing.
As a result, can by from the forced electric discharge of normal smoothing capacity device 55 processing be implemented into end degree when Between before repeat similarly to handle, and persistently carry out making smoothing capacity by passive discharge resistance 57 and forced electric discharge resistance 67 The forced electric discharge of the electric power storage power discharge of device 55 is handled.
In addition, in step S20, it is thus identified that intermittently make the storage in smoothing capacity device 55 via forced electric discharge resistance 67 When the duration for the processing that electric power discharges has reached setting time threshold value or more, HCU10 stops via forced electric discharge The intermittent forced electric discharge of resistance 67 handles (step S21), terminates control processing.
As a result, for example, causing vehicle speed sensor 75 to break down due to collision, although drive shaft 23 is still rotating But the halted state of vehicle 1 gets the wrong sow by the ear in step S15 and the discharge treatment of the electric power storage electric power of smoothing capacity device 55 is spun out In the case where, also connection relay 68 can be maintained dissengaged positions and disconnect forced electric discharge resistance 67 from discharge circuit, energy It avoids the prolonged discharge treatment due to the electric power storage electric power of the smoothing capacity device 55 and leads to its deterioration in characteristics.
Thus, other than executing the passive discharge treatment carried out by passive discharge resistance 57, also executing intermittently makes to put down The electric power storage electric power of sliding capacitor 55 handles the forced electric discharge that forced electric discharge resistance 67 is powered, and thus, it is possible to not make to force to put Heat deterioration occurred for resistance 67, and low pressureization is stored to the such as the 1st in a short time by the inter-electrode voltage of smoothing capacity device 55 The degree of the DC13V of the lead storage battery of electric installation 30.
At this point, being carried out smooth when in the implementation procedure in the intermittent forced electric discharge processing via forced electric discharge resistance 67 It, can be in the energization of the electric power storage electric power due to smoothing capacity device 55 when the charging of capacitor 55 or when have passed through the regulation duration And before causing low-resistance forced electric discharge resistance 67 to deteriorate, by the intermittence forced electric discharge, processing terminate.
In this way, in the present embodiment, in the discharge treatment of the smoothing capacity device 55 when vehicle 1 collides, in addition to Implement also to implement other than the passive electric discharge carried out by passive discharge resistance 57 via the intermittent strong of forced electric discharge resistance 67 System electric discharge can make to put down thus, it is possible to inhibit the forced electric discharge resistance 67 exceedingly to generate heat without making its deterioration in characteristics (maintaining characteristic) Sliding 55 low pressure of capacitor.
Although disclosing embodiments of the present invention, it is understood that those skilled in the art can not depart from the present invention Range in the case where apply change.All this modifications and equivalent are contained in claims by intention.

Claims (2)

1. a kind of control device of electric vehicle, is equipped on electric vehicle, which has: high-tension battery；Smooth electricity Container carries out smoothing techniques to the voltage for the direct current that above-mentioned high-tension battery provides；Inverter, by above-mentioned high-tension battery The direct current of offer is converted to alternating current；Motor generator, alternating current when as motor by being provided from above-mentioned inverter It drives and also has the function of generator, be also equipped with: switch allows hand over as in connection status and high pressure cut-off state Either side, above-mentioned connection status is the above-mentioned high-tension battery of connection and the state for being capable of providing high-tension electricity, above-mentioned high crush-cutting Disconnected state is to disconnect the state of the connection and cutting offer high-tension electricity；And
Forced electric discharge resistance can make the electric power storage electric power forced electric discharge in above-mentioned smoothing capacity device, above-mentioned control dress when being powered It sets and is characterized in that,
Above-mentioned electric vehicle has the collision detection portion that above-mentioned electric vehicle collides of detecting,
When detection collides, above-mentioned control device makes between the electric power storage electric power in above-mentioned smoothing capacity device in above-mentioned collision detection portion It is discharged to above-mentioned forced electric discharge resistance with having a rest,
When detecting the detection information of speed of above-mentioned electric vehicle is preset threshold speed or more, above-mentioned control device Above-mentioned switch is maintained above-mentioned high pressure cut-off state, pause keeps the electric power storage electric power in above-mentioned smoothing capacity device intermittently upward State the intermittent discharge processing of forced electric discharge resistance release.
2. the control device of electric vehicle according to claim 1,
In the intermittent discharge processing for discharging the electric power storage electric power in above-mentioned smoothing capacity device intermittently to above-mentioned forced electric discharge resistance Duration be preset time threshold more than when, above-mentioned control device stop the intermittent discharge processing.
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