CN205059477U - Distributing type four wheel drive's pure electric vehicles electric system - Google Patents

Distributing type four wheel drive's pure electric vehicles electric system Download PDF

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Publication number
CN205059477U
CN205059477U CN201520803665.6U CN201520803665U CN205059477U CN 205059477 U CN205059477 U CN 205059477U CN 201520803665 U CN201520803665 U CN 201520803665U CN 205059477 U CN205059477 U CN 205059477U
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China
Prior art keywords
controller
electric
entire car
relay
car controller
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CN201520803665.6U
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Chinese (zh)
Inventor
王震坡
曲昌辉
刘鹏
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北京理工大学
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Priority to CN201520803665.6U priority Critical patent/CN205059477U/en
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Publication of CN205059477U publication Critical patent/CN205059477U/en

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Abstract

The utility model provides a distributing type four wheel drive's pure electric vehicles electric system, the system comprises a power battery pack, battery management system, high voltage power distribution box, the junction box, the on -vehicle machine that charges, DCDC, the air condition compressor controller, air condition compressor, PTC, electric controller, including a motor, an end cap, a controller, and a cover plate, a wheel, remote monitering system, vehicle control unit, the battery, the ignition switch, combination meter, automobile body module controller, light, and low pressure supply relay and high voltage relay for cooperating each part work, this system is still including the high voltage direct current generating line and the low voltage output circuit that are used for connecting each parts simultaneously. The utility model discloses a pure electric vehicles electric system adds some new electric system and devices, has made some modifications to original low pressure circuit, has taked relatively independent wiring mode to the electric system who increases newly for whole electric system uses reliably, and easy operation is convenient.

Description

A kind of electrical system for pure electric vehicle of distributed four wheel drive
Technical field
The utility model relates to electronlmobil field, particularly relates to a kind of distributed four-wheel drive pure electric vehicle electric system.
Background technology
The new-energy automobile that a kind of electric energy of electronlmobil participates in, electric energy is converted into mechanical energy by electrical motor equal power device, thus drives running car.Deficient gradually due to environmental pollution and traditional energy, electronlmobil has become the focus that various countries' auto trade is paid close attention to, and four-wheel drive pure electric vehicle is little with its volume, specific power large, has the high praise that the features such as very high driving efficiency are more and more subject to the world.Existing pure electric automobile research and development are generally carry out based on orthodox car, and corresponding electric system is also develop based on traditional car electric system.This present situation hinders New-energy electric vehicle development, and the pure electric automobile due to four wheel drive is high-voltage electric system and low-voltage electric system and deposits, so once design improper, personal safety will bring great hidden danger.
Utility model content
In order to solve the deficiencies in the prior art part, the utility model object is to provide a kind of electrical system for pure electric vehicle of distributed four wheel drive, and the technical scheme of the electrical system for pure electric vehicle that the utility model is taked is as follows.
1) Structure composing of electric system
Distributed four-wheel drive pure electric vehicle electric system of the present utility model comprises power battery pack, battery management system, high voltage distribution box, distribution box without protectors, Vehicular charger, DCDC, air conditioner compressed machine controller, air-conditioning compressor, PTC, electric controller, motor, wheel, long distance control system, entire car controller, storage battery, ignition lock, combination instrument, body modules controller, light, and for coordinating low-voltage power supply relay and the high-voltage relay of each component working, this system also comprises high voltage dc bus for connecting components and low-voltage output cord road simultaneously.
2) electric system connection mode
In this electric system, the mouth of electrokinetic cell is connected with the input end of high voltage distribution box, and the mouth of high voltage distribution box is connected with the input end of distribution box without protectors, and the mouth of distribution box without protectors is connected with the input end of four electric machine controllers; The mouth of high voltage distribution box is connected with the input end of air conditioner compressed machine controller, and the mouth of air conditioner compressed machine controller is connected with air conditioning motor-driven compressor; The mouth of high voltage distribution box is connected with the input end of PTC; The mouth of high voltage distribution box is connected with the input end of DCDC; The mouth of DCDC is connected with the input end of low tension battery, is responsible for low tension battery charging, to ensure that the voltage of low tension battery is in rational operating range.
Use two gears of key switch are that OFF gear and ON keep off respectively, and for being communicated with of control ON circuit and low tension battery positive pole, when key switch is in OFF gear, described ON circuit and low tension battery positive pole disconnect.In normal power up, entire car controller low-voltage supply line controls by ON circuit.The low-voltage supply line positive pole of drive motor controller is by drive motor controller Control, and the break-make of this drive motor controller relay is controlled by entire car controller.The low-voltage supply line positive pole of battery management system is connected with battery management system relay, the direct bonding of its negative pole, and this battery management system relay is controlled by entire car controller.The low-voltage supply line positive pole of air conditioner compressed machine controller is connected with air conditioner compressed machine controller relay, and the break-make of this air conditioner compressed machine controller relay is controlled by entire car controller.The low-voltage supply line positive pole of brake boosting vacuum pump is connected with brake boosting vacuum pump relay, and this brake boosting vacuum pump relay controls by the break-make of brake pedal switch.Combination instrument is directly by ON line powering.The low-voltage supply line positive pole of electric power steering is connected with electric power steering relay, and the break-make of this electric power steering relay is by vehicle control unit controls.
Entire car controller, battery management system, Vehicular charger, drive motor controller, gear controller, between PTC, DCDC, carry out data exchange by CAN; The communication of entire car controller, body modules controller and combination instrument is realized by an other road CAN;
3) electric system mode of operation
The utility model electric system working process is as follows:
(1) key switch working process
Key from OFF gear beat keep off to ON time, entire car controller, electric power steering, combination instrument are started working, the connection of the low-voltage relay of vehicle control unit controls battery management system, drive motor controller, and each controller is started working, and completes low pressure self-inspection;
Key is in ON gear when putting, time in the CAN information that battery management system sends without major failure signal, entire car controller issues by CAN the instruction that battery management system connects cathode contact device, and entire car controller directly exports control signal and connects precharge high-voltage relay and carry out precharge simultaneously.When in the CAN signal that drive motor controller returns, display precharge completes, then entire car controller disconnects precharge high-voltage relay, if without major failure in the CAN information of now drive motor controller transmission, vehicle control unit controls positive contact device closes, entire car controller sends machine operation enable command to drive motor controller simultaneously, drive motor controller could be in running order, motor can respond the torque command that entire car controller sends, and now electrical drive system can drive vehicle.
In the process of driving, entire car controller gathers the signal of acceleration pedal 34, brake pedal, gear controller and other sensors, analyze, judge the running state of vehicle, transmit control signal to electric machine controller, electric machine controller applies corresponding torque to motor, thus realizes vehicle and advance, move backward, turn to.
When driving, when power system and electronic ancillary system break down, first entire car controller can carry out classification process to fault.
When there is minor failure, entire car controller meeting record trouble code, or send the order reducing motor output torque.When there is major failure, entire car controller can send the order reducing motor output torque.And once vehicle is out of service, unless fault clearance, otherwise entire car controller will not allow vehicle again to run.
When there is emergency, entire car controller meeting fast shut-off positive contact device and cathode contact device, guarantee the safety of vehicle self and occupant.
Key from ON gear put get back to OFF position time, all parts quit work.
Key can carry out stopping for charging after getting back to OFF gear.Charging wire connect with vehicle after, wake entire car controller up, entire car controller wakes the parts such as battery management system up, the CAN communication of battery management system and Vehicular charger is started working, judge current charge requirement, when battery meets charge condition, battery management system and Vehicular charger, by CAN network transferring command, carry out charging operations to battery.In process of charging, combination instrument display current information, entire car controller Real-Time Monitoring present charge state, forbids that high-pressure system powers on, and ensures that vehicle is in traveling lockup state in the charge state; And according to battery status information restriction charge power, protection battery.
(2)DCDC
When key is in ON gear, after precharge completes, DCDC completes self-inspection, and export normal signal, entire car controller issues DCDC enable signal.If when entire car controller detects the voltage of low tension battery lower than specified value, entire car controller sends enable signal to start as low tension battery charging to DCDC, DCDC.If when low tension battery terminal voltage reaches charging valtage higher limit, entire car controller sends DCDC and stops charge command.
When key is in OFF gear, now entire car controller no longer works, and after DCDC can not receive entire car controller signal, will no longer work.
(3) electric power steering
When key is placed in ON gear, vehicle control unit controls connects electric power steering relay, and electric power steering is started working.
(4) brake boosting vacuum pump
The switch relay of brake boosting vacuum pump is controlled by brake pedal.After stepping on brake pedal, brake switch closes, and vacuum servo relay is connected, and power-assisted vacuum pump is started working, for brake pedal power-assisted.
(5) electronic cooling fan
Electronic cooling fan is for cooling drive motor controller and a/c system.When wherein one group have a cooling requirement time, the high low speed according to fan demand controls, and the high-speed requirement of fan has precedence over low speed demand.Entire car controller controls the closed of electronic cooling fan by controlling electronic cooling fan relay.
(6) electric water pump
Electric water pump is for cooling drive motor controller, and when drive motor controller temperature or water temperature are higher than specified value, vehicle control unit controls water pump relay starts electric water pump; When drive motor controller temperature or water temperature are lower than specified value, entire car controller is by disconnecting water pump cut-off electric water pump.
(7) air conditioner compressed machine controller
When key ON keeps off and connecting, complete precharge work, the air conditioner compressed machine controller of vehicle control unit controls has powered on.
Entire car controller gathers air-conditioning panel, PTC on-off signal, AC on-off signal, blower switch signal, evaporator temperature signal and compressor fault signal.Under entire car controller determines that a/c system is operated in the pattern that refrigeration still heats after classification, process, then control accordingly according to difference, finally control signal is exported.
Under a/c system is in the pattern heated, after vehicle-mounted dump energy, single power battery voltage and temperature communications parameter that the battery management system that entire car controller is received by CAN sends, entire car controller judges unlatching or the closedown of rear control PTC.
Under a/c system is in refrigeration mode, entire car controller is by receiving vehicle environmental temperature sensor, evaporator temperature sensor collection vehicle ambient temperature parameter and evaporator surface temperature parameter, entire car controller is according to vehicle environmental temperature, vehicle-mounted dump energy, single power battery voltage and temperature, after judging, processing, air conditioner compressed machine controller is given with pwm control signal, regulate air-conditioning compressor rotating speed, thus reach different air-conditioning thermoregulation effects.
Electric system due to pure electric automobile is high-voltage electric system and low-voltage electric system and deposits, and electric device quantity is many, moreover the adding of the electric system of some advanced persons, comparatively orthodox car is complicated to make electrical system control, if so design of electrical system is improper, traffic safety hidden danger will be caused.The distributed four-wheel driving electric vehicle electric system that the utility model proposes, add some new electric system and devices, part amendment has been made to original low-voltage circuit, relatively independent wire laying mode is taken to the electric system newly increased, whole electric system is used reliable, simple to operation.
Accompanying drawing explanation
Fig. 1 is distributed four-wheel drive pure electric vehicle electrical structure schematic diagram
Fig. 2 is distributed four-wheel drive pure electric vehicle high-voltage electrical apparatus schematic diagram
Fig. 3 is distributed four-wheel drive pure electric vehicle low-voltage electrical schematic diagram
Fig. 4 is distributed four-wheel drive pure electric vehicle control signal schematic diagram
Description of reference numerals is as follows:
Power battery pack 12, battery management system 13, high voltage distribution box 11, distributor case 10, Vehicular charger 7, DCDC14, air conditioner compressed machine controller 6, air-conditioning compressor 5, PTC4, left front electric machine controller 24, left back electric machine controller 25, right back electric machine controller 21, right front electric machine controller 3, left front motor 23, left back motor 26, right back motor 20, right front motor 2, front left wheel 22, rear left wheel 27, right rear wheel 19, right front wheel 1, long distance control system 8, entire car controller 9, storage battery 15, combination instrument 16, body modules controller 17, light 18, positive contact device 28, precharge group 29, pre-charge contactor 30, service switch 31, cathode contact device 32, gear controller 33, acceleration pedal 34, brake pedal 35, electric booster steering controller 36, air conditioner compressed machine controller relay 37, DCDC relay 38, left front electric machine controller relay 39, right front electric machine controller relay 40, left back electric machine controller relay 41, right back electric machine controller relay 42, key switch 43, electric power steering relay 44, battery management system relay 45, electric water pump relay 46, cooling fan relay 47, electric water pump 48, electronic cooling fan 49.
Detailed description of the invention
Structure of the present utility model, feature and other objects is understood further in order to enable inspector, preferred embodiment appended by now combining is accompanied by accompanying drawing and is described in detail as follows, embodiment illustrated by this accompanying drawing is only for illustration of the technical solution of the utility model, and non-limiting the utility model.
1) electric system composition
As shown in Figure 1, Fig. 1 is distributed four-wheel drive pure electric vehicle electrical structure schematic diagram.Described electric system comprises power battery pack 12, battery management system 13, high voltage distribution box 11, distributor case 10, Vehicular charger 7, DCDC14, air conditioner compressed machine controller 6, air-conditioning compressor 5, PTC4, electric machine controller 24,3,25,21, motor 23,2,26,20, wheel 22,1,27,19, long distance control system 8, entire car controller 9, storage battery 15, key switch 43, combination instrument 16, body modules controller 17, light 18.
。High voltage distribution box 11 comprises five tunnels and exports, and a road exports as air conditioner compressed machine controller 6, and air conditioner compressed machine controller 6 is connected with motor driven compressor 5; One tunnel exports as distributor case 10; One tunnel exports as PTC4; One tunnel exports and is connected with low tension battery 15 for DCDC14, DCDC14; One tunnel exports as distributor case 10, and distributor case 10 is connected with four electric machine controllers 24,3,25,21, four electric machine controllers 24,3,25,21 respectively with four motors 23,2,26,20 is connected.
High voltage distribution box 11 is connected with Vehicular charger 7, high voltage distribution box 11 is connected with for the power battery pack 12 for power battery charging, Vehicular charger 7 is connected with battery management system 13, to decide to charge in which way according to the detection state-of-charge of power battery pack 12, the charge information of temperature, high voltage distribution box 11 communicates with Vehicular charger 7, to tell charging valtage needed for Vehicular charger 7 and charging current.Vehicular charger 7 the power information Real-time Feedback of the output voltage of charge circuit and outgoing current to battery management system 13.
Long distance control system 8 is connected with entire car controller 9, be connected with battery management system 13 with Vehicular charger 7 again, to monitor in real time automobile position and to pass through the monitoring to batteries of electric automobile voltage and temperature, grasp the situation of change of batteries of electric automobile and temperature; Long distance control system 8 is connected with air conditioner compressed machine controller 6, to make chaufeur remote control in advance before getting on the bus start electric air-conditioning, and realizes long-range air conditioner refrigerating, air conditioning warm air and defrost function.
Battery management system 13 is connected with Vehicular charger 7, long distance control system 8, entire car controller 9, to make the communication in charging electric vehicle process and long-range charging, battery management system 13 is connected with power battery pack 12 simultaneously, to estimate the state-of-charge of power battery pack 12, and the mode of operation of detection of dynamic power battery pack 12, the equilibrium between cell.
Air conditioner compressed machine controller 6 is connected with air-conditioning compressor 5 with high voltage distribution box 11, and air conditioner compressed machine controller 6 is also connected with entire car controller 9 simultaneously, has refrigeration and heat-production functions to make a/c system.
The minus earth of low tension battery 15, the positive pole of low tension battery 15 is connected with the input power cord of key switch 43; Key switch 43 is provided with OFF gear, ON gear; Key switch 43 controls the arousal function of Vehicular charger 7, long distance control system 8, entire car controller 9; Key switch 43 also controls brake boosting vacuum pump 52, electric water pump 48, electric power steering 36, electronic cooling fan 49, combination instrument 16, entire car controller 9; Key switch 43 also controls the low-voltage supply line of battery management system 13, the low-voltage supply line of electric machine controller 24,3,25,21 and the low-voltage supply line of air conditioner compressed machine controller 6, and described low-voltage supply line is powered by low tension battery 15.
As shown in Figure 2, Fig. 2 is distributed four-wheel drive pure electric vehicle high-voltage electrical apparatus schematic diagram.Key switch 43 is placed in ON gear when putting, and entire car controller 9 is started working, and entire car controller 9 controls battery management system 13 and electric machine controller 24,3,25, and 21 start working.
After low voltage circuit completes self-inspection, if battery management system 13 and electric machine controller 24,3, when 25,21 transmissions are without major failure, entire car controller 9 controls the order that battery management system 13 sends closed cathode contact device 32, entire car controller 9 controls pre-charge contactor simultaneously, and precharge starts.
After precharge completes, entire car controller 9 controls pre-charge contactor and disconnects, closed positive contact device 28.
As shown in Figure 3, Fig. 3 is distributed four-wheel drive pure electric vehicle low-voltage electrical, control signal schematic diagram.The ON circuit of key switch 43 determines the break-make of entire car controller 9, combination instrument 16.Entire car controller 9 controls battery management system relay 45, positive contact device 28, pre-charge contactor, cooling fan relay 47, cooling water pump relay 44, drive motor controller relay.
Battery management system 13 controls the break-make of cathode contact device 32.Entire car controller 9, battery management system 13, Vehicular charger 7, drive motor controller, gear controller, between PTC4, DCDC14, carry out data exchange by CAN; The communication of entire car controller 9, body modules controller 17 and combination instrument 16 is realized by an other road CAN.
Whole-vehicle air-conditioner inputs (acceleration pedal 34, brake pedal 35 and gear selecting switch), torque rotary angle transmitter, vehicle-state according to chaufeur to vehicle, by analysis and process, send corresponding instruction to drive motor controller, the driving torque controlling motor drives vehicle.
Entire car controller 9 sends enable signal to DCDC14, receives the mode of operation of DCDC14 simultaneously;
Under air-conditioning heating pattern, entire car controller 9 sends and controls to PTC4; Under air conditioner refrigerating pattern, car load also sends air-conditioning enable signal, air conditioner motor rotating speed pwm signal to air conditioner compressed machine controller 6.
Power battery pack 12 is connected with battery management system 13, and battery management system 13 is connected with service switch 31, and service switch 31 is for the emergency safety break-make of high direct voltage.Be connected with pre-charge contactor 30 with positive contact device 28, cathode contact device 32; The break-make of pre-charge contactor 30, positive contact device 28 controls by entire car controller 9; The on-off action of cathode contact device 32 is controlled by battery management system 13.
When chaufeur steps on brake pedal 35, brake pedal 35 switch closes, brake boosting vacuum pump relay closes, and brake boosting vacuum pump 52 is powered; When brake pedal 35 lifts, brake boosting vacuum pump 52 power-off.
2) electric system mode of operation
Below in conjunction with Fig. 1, Fig. 2 and Fig. 3, the mode of operation of the utility model electric system is described.
Key from OFF gear beat keep off to ON time, entire car controller 9, electric power steering, combination instrument 16 are started working, entire car controller 9 control battery management system 13, electric machine controller low-voltage relay connection, each controller is started working, and completes low pressure self-inspection;
Key is in ON gear when putting, time in the CAN information that battery management system 13 sends without major failure signal, entire car controller 9 issues by CAN the instruction that battery management system 13 connects negative electrode bus DC contactor, and the direct control signal connection precharge high-voltage relay that exports of entire car controller 9 carries out precharge simultaneously.When in the CAN signal that drive motor controller returns, display precharge completes, then entire car controller 9 disconnects precharge high-voltage relay, if without major failure in the CAN information of now drive motor controller transmission, entire car controller 9 sends machine operation enable command to drive motor controller, drive motor controller could be in running order, and motor can respond the torque command that entire car controller 9 sends, and now electrical drive system can drive vehicle.
In the process of driving, entire car controller 9 gathers the signal of acceleration pedal 34, brake pedal 35, gear controller and other sensors, analyze, judge the running state of vehicle, transmit control signal to electric machine controller, electric machine controller applies corresponding torque to motor, thus realizes vehicle and advance, move backward, turn to.
When driving, when power system and electronic ancillary system break down, first entire car controller 9 can carry out classification process to fault.
When there is minor failure, entire car controller 9 meeting record trouble code, or send the order reducing motor output torque.When there is major failure, entire car controller 9 can send the order reducing motor output torque.And once vehicle is out of service, unless fault clearance, otherwise entire car controller 9 will not allow vehicle again to run.
When there is emergency, entire car controller 9 meeting fast shut-off positive contact device 28 and cathode contact device 32, guarantee the safety of vehicle self and occupant.
Key from ON gear put get back to OFF position time, all parts quit work.
Key can carry out stopping for charging after getting back to OFF gear.Charging wire connect with vehicle after, wake entire car controller 9 up, entire car controller 9 wakes parts such as battery management system 13 grade up, battery management system 13 is started working with the CAN communication of Vehicular charger 7, judge current charge requirement, when battery meets charge condition, battery management system 13 and Vehicular charger 7, by CAN network transferring command, carry out charging operations to battery.In process of charging, combination instrument 16 shows current information, and entire car controller 9 Real-Time Monitoring present charge state, forbids that high-pressure system powers on, and ensures that vehicle is in traveling lockup state in the charge state; And according to battery status information restriction charge power, protection battery.
(2)DCDC14
When key is in ON gear, after precharge completes, DCDC14 completes self-inspection, and export normal signal, entire car controller 9 issues DCDC14 enable signal.If when entire car controller 9 detects the voltage of low tension battery 15 lower than specified value, entire car controller 9 sends enable signal to start as low tension battery 15 charges to DCDC14, DCDC14.If when low tension battery 15 terminal voltage reaches charging valtage higher limit, entire car controller 9 sends DCDC14 and stops charge command.
When key is in OFF gear, now entire car controller 9 no longer works, and DCDC14 will no longer work after can not receive entire car controller 9 signal.
(3) electric power steering
When key is placed in ON gear, entire car controller 9 controls to connect electric power steering relay 44, and electric power steering is started working.
(4) brake boosting vacuum pump 52
The switch relay of brake boosting vacuum pump 52 is controlled by brake pedal 35.After stepping on brake pedal 35, brake switch closes, and vacuum servo relay is connected, and power-assisted vacuum pump 52 is started working, for brake pedal 35 power-assisted.
(5) electronic cooling fan 49
Electronic cooling fan 49 is for cooling drive motor controller and a/c system.When wherein one group have a cooling requirement time, the high low speed according to fan demand controls, and the high-speed requirement of fan has precedence over low speed demand.Entire car controller 9 controls the closed of electronic cooling fan 49 by controlling electronic cooling fan relay 47.
(6) electric water pump 48
Electric water pump 48 is for cooling drive motor controller, and when drive motor controller temperature or water temperature are higher than specified value, entire car controller 9 controls water pump relay to start electric water pump 48; When drive motor controller temperature or water temperature are lower than specified value, entire car controller 9 is by disconnecting water pump cut-off electric water pump 48.
(7) air conditioner compressed machine controller 6
When key ON keeps off and connecting, complete precharge work, entire car controller 9 controls air conditioner compressed machine controller and has powered on.
Entire car controller 9 gathers air-conditioning panel, PTC on-off signal, AC on-off signal, blower switch signal, evaporator temperature signal and compressor fault signal.Under entire car controller 9 determines that a/c system is operated in the pattern that refrigeration still heats after classification, process, then control accordingly according to difference, finally control signal is exported.
Under a/c system is in the pattern heated, after vehicle-mounted dump energy, single power battery voltage and temperature communications parameter that the battery management system 13 that entire car controller 9 is received by CAN sends, entire car controller 9 judges unlatching or the closedown of rear control PTC4.
Under a/c system is in refrigeration mode, entire car controller 9 is by receiving vehicle environmental temperature sensor, evaporator temperature sensor collection vehicle ambient temperature parameter and evaporator surface temperature parameter, entire car controller 9 is according to vehicle environmental temperature, vehicle-mounted dump energy, single power battery voltage and temperature, after judging, processing, air conditioner compressed machine controller is given with pwm control signal, regulate air-conditioning compressor rotating speed, thus reach different air-conditioning thermoregulation effects.

Claims (7)

1. the electrical system for pure electric vehicle of a distributed four wheel drive, it is characterized in that, described electrical system for pure electric vehicle comprises: power battery pack (12), battery management system (13), high voltage distribution box (11), distributor case (10), Vehicular charger (7), DCDC (14), air conditioner compressed machine controller (6), air-conditioning compressor (5), PTC (4), electric machine controller (24, 3, 25, 21), motor (23, 2, 26, 20), wheel (22, 1, 27, 19), long distance control system (8), entire car controller (9), storage battery (15), combination instrument (16), body modules controller (17), light (18), wherein,
High voltage distribution box (11) comprises five tunnels and exports, and a road exports as air conditioner compressed machine controller (6), and air conditioner compressed machine controller (6) is connected with motor driven compressor (5); One tunnel exports as distributor case (10); One tunnel exports as PTC (4); One tunnel exports and is connected with low tension battery (15) for DCDC (14), DCDC (14); One tunnel exports as distributor case (10), distributor case (10) and four electric machine controllers (24,3,25,21) be connected, four electric machine controllers (24,3,25,21) be connected with four motors (23,2,26,20) respectively;
High voltage distribution box (11) is connected with Vehicular charger (7), high voltage distribution box (11) is connected with for the power battery pack (12) for power battery charging, Vehicular charger (7) is connected with battery management system (13), with the state-of-charge according to detection power battery pack (12), the charge information of temperature decides to charge in which way, high voltage distribution box (11) communicates with Vehicular charger (7), to tell charging valtage needed for Vehicular charger (7) and charging current, Vehicular charger (7) then the power information Real-time Feedback of the output voltage of charge circuit and outgoing current to battery management system (13),
Long distance control system (8) is connected with entire car controller (9), be connected with battery management system (13) with Vehicular charger (7) again, to monitor in real time automobile position and to pass through the monitoring to batteries of electric automobile voltage and temperature, grasp the situation of change of batteries of electric automobile and temperature; Long distance control system (8) is connected with air conditioner compressed machine controller (6), to make chaufeur remote start electric air-conditioning in advance before getting on the bus, and realizes long-range air conditioner refrigerating, air conditioning warm air and defrost function;
Battery management system (13) is connected with Vehicular charger (7), long distance control system (8), entire car controller (9), to make the communication in charging electric vehicle process and long-range charging, battery management system (13) is connected with power battery pack (12) simultaneously, to estimate the state-of-charge of power battery pack, and the mode of operation of detection of dynamic power battery pack (12), the equilibrium between cell;
Air conditioner compressed machine controller (6) is connected with air-conditioning compressor (5) with high voltage distribution box (11), air conditioner compressed machine controller (6) is also connected with entire car controller (9) simultaneously, has refrigeration and heat-production functions to make a/c system.
2. electrical system for pure electric vehicle as claimed in claim 1, it is characterized in that, power battery pack (12) is connected with battery management system (13), battery management system (13) is connected with service switch (31), is connected with pre-charge contactor (30) with positive contact device (28), cathode contact device (32); The break-make of pre-charge contactor (30), positive contact device (28) controls by entire car controller (9); The on-off action of cathode contact device (32) is controlled by battery management system (13).
3. electrical system for pure electric vehicle as claimed in claim 2, it is characterized in that, service switch (31) is for the emergency safety break-make of high direct voltage.
4. electrical system for pure electric vehicle as claimed in claim 1, it is characterized in that, the minus earth of low tension battery, the positive pole of low tension battery is connected with the input power cord of key switch (43); Key switch (43) is provided with OFF gear, ON gear; Key switch (43) controls the arousal function of Vehicular charger (7), long distance control system (8), entire car controller (9); Key switch (43) also controls brake boosting vacuum pump (52), electric water pump (48), electric power steering (36), electronic cooling fan (49), combination instrument (16), entire car controller (9); Key switch (43) also controls low-voltage supply line, the electric machine controller (24 of battery management system (13), 3,25,21) low-voltage supply line of low-voltage supply line and air conditioner compressed machine controller (6), described low-voltage supply line is powered by low tension battery.
5. electrical system for pure electric vehicle as claimed in claim 4, it is characterized in that, two gears OFF, ON of key switch (43) being communicated with of control ACC circuit and low tension battery positive pole respectively, the ON shift control ON circuit of key switch (43) and being communicated with of low tension battery positive pole; In key switch (43) action, the low-voltage supply line positive pole of battery management system (13) is connected with battery management system relay (45), entire car controller (9) is connected with battery management system relay (45), the direct bonding of negative pole of the low-voltage supply line of battery management system (13); The low-voltage supply line positive pole of air conditioner compressed machine controller (6) is connected with air conditioner compressed machine controller relay (37), and the break-make of this air conditioner compressed machine controller relay (37) is controlled by entire car controller (9); Drive motor controller (24,3,25,21) low-voltage supply line positive pole is by drive motor controller relay (39,40,41,42) control, this drive motor controller relay (39,40,41,42) break-make is controlled by entire car controller (9); Supply line's positive pole of brake boosting vacuum pump (52) is connected with active power-assisted vacuum pump relay (50), and the break-make that this brake boosting vacuum pump relay (50) is subject to brake pedal switch (51) controls; Combination instrument (16) is directly by ON line powering; Supply line's positive pole of entire car controller (9) is connected with ON circuit, and this entire car controller (9) power supply controls by ON circuit; The low-voltage supply line positive pole of electric power steering (36) is connected with electric power steering relay (44), and the break-make of this electric power steering relay (44) is by vehicle control unit controls (9).
6. electrical system for pure electric vehicle as claimed in claim 4, it is characterized in that, the low-voltage supply line positive pole of electric water pump (48) is connected with electric water pump relay (46), and the break-make of this electric water pump relay (46) controls by entire car controller (9); The low-voltage supply line positive pole of electronic cooling fan (49) is connected with electronic cooling fan relay (47), and the break-make of this electronic cooling fan relay (47) controls by entire car controller (9).
7. electrical system for pure electric vehicle as claimed in claim 1, it is characterized in that, entire car controller (9), battery management system (13), Vehicular charger (7), drive motor controller (24,3,25,21), gear controller (33), PTC (4), DCDC carry out data exchange by CAN between (14); The communication of entire car controller (9), body modules controller (17) and combination instrument (16) is realized by an other road CAN.
CN201520803665.6U 2015-10-15 2015-10-15 Distributing type four wheel drive's pure electric vehicles electric system CN205059477U (en)

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Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105946614A (en) * 2016-06-18 2016-09-21 苏州埃威特新能源科技有限公司 Vehicle driving system
CN106080205A (en) * 2016-06-24 2016-11-09 安徽长城输送机械制造有限公司 A kind of automobile emergency service switch and control method thereof
CN106240376A (en) * 2016-08-24 2016-12-21 东风襄阳旅行车有限公司 Electric automobile high-voltage precharge and main contactor misconnection protection device and method
CN106428199A (en) * 2016-12-05 2017-02-22 潍柴动力股份有限公司 New energy automobile and high voltage electrical system thereof
CN106740127A (en) * 2016-12-05 2017-05-31 潍柴动力股份有限公司 A kind of new-energy automobile and its high-voltage electric system
CN107422719A (en) * 2017-06-08 2017-12-01 杭州伯坦科技工程有限公司 Support the electric automobile drive assembly system and its control method of multi_motor control
CN111267596A (en) * 2020-02-14 2020-06-12 北京理工大学 Electric automobile driving device, system and electric automobile

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105946614A (en) * 2016-06-18 2016-09-21 苏州埃威特新能源科技有限公司 Vehicle driving system
CN106080205A (en) * 2016-06-24 2016-11-09 安徽长城输送机械制造有限公司 A kind of automobile emergency service switch and control method thereof
CN106240376A (en) * 2016-08-24 2016-12-21 东风襄阳旅行车有限公司 Electric automobile high-voltage precharge and main contactor misconnection protection device and method
CN106240376B (en) * 2016-08-24 2018-08-07 东风襄阳旅行车有限公司 Electric automobile high-voltage is pre-charged and main contactor misconnection protective device and method
CN106428199A (en) * 2016-12-05 2017-02-22 潍柴动力股份有限公司 New energy automobile and high voltage electrical system thereof
CN106740127A (en) * 2016-12-05 2017-05-31 潍柴动力股份有限公司 A kind of new-energy automobile and its high-voltage electric system
CN106428199B (en) * 2016-12-05 2018-12-14 潍柴动力股份有限公司 A kind of new-energy automobile and its high-voltage electric system
CN107422719A (en) * 2017-06-08 2017-12-01 杭州伯坦科技工程有限公司 Support the electric automobile drive assembly system and its control method of multi_motor control
CN111267596A (en) * 2020-02-14 2020-06-12 北京理工大学 Electric automobile driving device, system and electric automobile

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