CN202923408U - Integrated power device of pure electric vehicle - Google Patents

Integrated power device of pure electric vehicle Download PDF

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Publication number
CN202923408U
CN202923408U CN 201220609848 CN201220609848U CN202923408U CN 202923408 U CN202923408 U CN 202923408U CN 201220609848 CN201220609848 CN 201220609848 CN 201220609848 U CN201220609848 U CN 201220609848U CN 202923408 U CN202923408 U CN 202923408U
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module
integrated power
power supply
pure electric
supply controller
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CN 201220609848
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钟国华
戴能红
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Nanjing Automobile Group Corp
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Nanjing Automobile Group Corp
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    • 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
    • Y02T90/16—Information or communication technologies improving the operation of electric vehicles

Abstract

The utility model relates to an integrated power device of a pure electric vehicle. The integrated power device comprises an integrated power controller, a communication module, an insulation detection module, a smoke detection module, a collision detection module, a pre-charging module and a high voltage power distribution module, wherein the communication module is communicated with the integrated power controller to acquire current vehicle condition information and inform the entire vehicle controller of information of a power system state; outputs of the insulation detection module, the smoke detection module and the collision detection module are connected with an analog-to-digital conversion module of the integrated power controller to perform signal measurement and judge whether dangerous accidents such as electric leakage, fire disaster and collision occur; and a control algorithm signal of the integrated power controller is output through the pre-charging module and the high voltage power distribution module to manage the electric safety of the pure electric vehicle.

Description

A kind of integrated power source apparatus of pure electric automobile
Technical field
The utility model relates to the integrated power source apparatus of single kind of pure electric automobile.
Background technology
In recent years, along with the development of battery technology and the maturation of motor technology, pure electric automobile was developed faster, had possessed gradually Industrialized conditions.
Pure electric automobile usually also is equipped with the high pressure consumers such as electric powered steering, electric air-conditioning and converts low pressure to for low-voltage equipment through DCDC except drive motor, and whether each consumer connects high-tension current determines according to driver intention.For drive motor, if moment is connected high pressure, can impact, affect motor performance and service life.All high-voltage relays in the moment of on/off, can produce large electromagnetic wave, may disturb near low voltage equipment.
Owing to there being high-tension current on pure electric automobile, in case leak electricity, the situation such as short circuit, can cause serious consequence.And after the accidents such as the high pressure pure electric automobile bumps, fire, if in time cut off high is electric, also can threaten driver and crew's personal safety.
Because above-mentioned various situations may occur, the control of pure electric automobile high-tension current can not only according to the driving demand of chaufeur, also need the safe condition of Real-Time Monitoring automobile.When leaking electricity, when short circuit or collision happens, fire, must producing warning, emergency cut-off high-tension current in case of necessity in the very first time.
The utility model content
For existing technical matters in prior art, the utility model proposes the integration power-supply system of a kind of energy safe and reasonable ground management high pressure electricity consumption for pure electric automobile.
The technical scheme that the utility model solves above technical matters is:
The design integration power-supply controller of electric, according to whole vehicle state and monitoring result, the electricity consumption of management high pressure, monitoring Electrical Safety.
The utility model mainly comprises: comprise integrated power supply controller 1, communication module 2, insulation monitoring module 3, Smoke Detection module 4, impact detection module 5, pre-charge module 6 and high voltage power distribution module 7; Described communication module 2 is communicated by letter with entire car controller, current vehicle condition information, power-supply system status information are informed entire car controller, the output of described insulation monitoring module 3, Smoke Detection module 4 and impact detection module 5 connects respectively the analog-to-digital conversion module of integrated power supply controller 1, carry out signal measurement, the control algorithm signal of described integrated power supply controller 1 is through pre-charge module 6 and 7 outputs of high voltage power distribution module.
The effect of integrated power supply controller is to the on-vehicle safety module, and it comprises that insulation monitoring module, Smoke Detection module and impact detection module etc. and high pressure electric drive signal manage and realize to control.Pre-charge module mainly reduces high-tension current to the moment impact of motor by pre-charge circuit; The high voltage power distribution module is mainly completed car load demand for control and safety guard-safeguard by relay and wire fuse, and the on-board high-voltage consumer is managed; The effect of communication module be to realize and entire car controller between communication, implementation is by the CAN bus.
It is total just and the resistance between total negative terminal and vehicle body ground that insulation monitoring module detects high-tension current, judges the class of insulation according to the size of resistance value, is divided into safety, low risk level, high-risk grade.The high-risk grade sign can only power on after the key outage again could remove or transfer to low risk level.
The Smoke Detection module by the smog in astigmatic formula photoelectric smoke electric circuit inspection compartment, according to the size of current judgement that produces after infrared reception diode receiving scattered light, non smoke is arranged, thereby whether judgement has presence of fire, is divided into safe class and hazard level.After danger being detected, only having powers on after key outage again could remove danger sign.
The impact detection module mainly is made of crash sensor, and when crash acceleration surpassed predetermined threshold value, collision status was set to hazard level, needs cut off high electricity immediately, and only has again to power on after the key outage and could remove danger sign.
Communication module is the CAN bus interface, and the CAN controller that this interface is carried by central processing unit inside and plate carry outside CAN bus transceiver module and form.
The utility model has the advantages that, high voltage power distribution and safety detection module are integrated in a distributing box, form individual components, be conducive to reduce it to the electromagnetic interference of vehicle body low-pressure system, can reasonably manage the high pressure electricity consumption, the modules such as insulation detection, impact detection can guarantee the electrical safety of pure electric automobile to greatest extent.
Description of drawings
Fig. 1 integrated power source apparatus module catenation principle block diagram.
Fig. 2 insulation resistance estimation circuit principle schematic.
Fig. 3 Smoke Detection principle schematic.
Fig. 4 high voltage power distribution module principle schematic diagram.
The specific embodiment
Be described further for specific embodiment of the utility model below in conjunction with accompanying drawing.
Electronlmobil in the present embodiment is coordinated electric machine controller, integrated power supply controller 1, gauge management system by entire car controller, and car load energy distribution, power distribution and electric attachment management are controlled.Its associated components parameter is: battery 144V/120Ah, and DC/DC 1.5kW, electric air-conditioning 1.5kW, electric powered steering 2kW, motor 8kW/22kW, its dc bus capacitor are 7920uF.
As shown in the schematic diagram of Fig. 1 the present embodiment, it comprises integrated power supply controller 1, communication module 2, insulation monitoring module 3, Smoke Detection module 4, impact detection module 5, pre-charge module 6 and high voltage power distribution module 7.Receive by communication module 2 whole vehicle state information and the distribution control command that entire car controller is sent.Detect and the signal processing by insulation monitoring module 3, Smoke Detection module 4 and 5 pairs of safety cases of impact detection module, send into the analog-to-digital conversion module of integrated power supply controller 1, carry out signal measurement.The control algorithm output signal of integrated power supply controller 1 is controlled each equipment high-tension current break-make through pre-charge module 6 and 7 outputs of high voltage power distribution module.
Integrated power supply controller 1 adopts the MC9S12XDT256 treater of Freescale company.This treater has the bus frequency of maximum 80Mhz, and 16 passage ADC, 16 PWM of 8 passage are arranged simultaneously,, 36 passage GPIO and two-way CAN bus controller, satisfy control, the calculation requirement of integrated power supply management.
The main function of integrated power supply controller 1 is that input, the output to system manages, and is responsible for completing quick, complicated control algorithm.Native system is mainly used analog-to-digital conversion module (ADC), pulse width modulation module (PWM) module, external interrupt module and the GIO (GPIO) in the integrated power supply controller.Wherein the main Analog signals of analog-to-digital conversion module, comprise insulation resistance detection signal and Smoke Detection sensor signal.Pulse width modulation module is mainly used to export suitable pulse width signal, regularly drives the infrared emission of Smoke Detection module.The external interrupt module is used for Receiving collision detection module state.GIO is mainly used to switching value and the digital quantity of disposal system, comprises the relay of pre-charge module and high voltage power distribution module.The integrated power supply controller also needs to complete filtering, the calculating of various complexity when completing the I/O management function, and moves the control algorithm of various complexity.
Communication module 2 directly uses MC9S12XDT256 to carry the CAN controller and controls as the transmitting-receiving of message, and bus signals is driven by the universal high speed CAN bus driver PCA82C250 that PHILIPS company produces.Communication module receives whole vehicle state information and the distribution control command that entire car controller is sent, and sends safety state information.
Insulation monitoring module 3 is measured high-tension current positive and negative busbar insulation resistance over the ground R+With R-, circuit theory as shown in Figure 2.By cycle control con1 and con2, alternately will R 0 Parallel connection accesses on lower negative busbar resistance to ground and calculates accordingly V+With V-, and then calculate R+With R-Follow the GB requirement, the electric automobile power battery rated voltage is 144V, works as R+＜15
Figure 380980DEST_PATH_IMAGE001
(namely being about 100*144) or R-＜15
Figure 562562DEST_PATH_IMAGE001
The time, be high-risk grade; When R+72 (being 500*144) and R-72 , be safety; Otherwise be low risk level.The high-risk grade sign can only power on after the key outage again could remove or transfer to low risk level.
Smoke Detection module 4 adopts the photoelectric smoke detection method to detect smog in the compartment, with timely Fire Monitoring calamity.Its principle signal as shown in Figure 3, adopt special optics labyrinth as the smog receiving device, in infrared-emitting diode and infrared receiving diode are housed, the output PWM ripple of integrated power supply controller namely regularly drives infrared emission and partly launches infrared ray after power transfer, if there is smog to enter the optics labyrinth, produce scattering of light, generation current signal after the infrared receiving diode receiving optical signals, LM358 is converted to voltage signal through op amp, sends into integrated power supply controller AD module and samples.When in the continuous 1s of the magnitude of voltage that samples during greater than threshold value 3.5V, be set to hazard level.After danger being detected, only having powers on after key outage again could remove danger sign.
The main Sen Sata crash sensor FCO505 of Electron Technology Co., Ltd that uses of impact detection module 5; front and back are respectively installed one on the chassis; with its open end ground connection; common port through on draw after the external interrupt (being set to falling edge triggers) of access integrated power supply controller; when the absolute value that surpasses 10g or broadside impact acceleration/accel when the absolute value of longitudinal impact acceleration/accel surpasses 8g; produce the anti-collision warning signal; controller can be put the collision risk grade; the cut off high electricity, protect high-pressure system safety immediately.And the hazard level sign can only again power on after the key outage and just can remove.
The integrated power supply controller is taked corresponding safeguard procedures according to above testing result.When impact detection or Smoke Detection result are hazard level, or the insulation testing result needs unconditionally cut off high electricity immediately when being high-risk grade, and when insulation detection or impact detection result are low risk level, need light the alarm lamp warning, in case of necessity downrating.
Pre-charge module 6 is comprised of a pre-charge resistance and two electric-controlled type high-voltage relays; when motor powers on; first closed pre-charge-relay; utilize pre-charge resistance to reduce the motor instantaneous high pressure and impact to protect motor; until the motor both end voltage reach 115V(be cell pressure 80%) time closed main relay, disconnect pre-charge-relay.Pre-charge-relay and motor main relay are controlled by the IO of integrated power supply controller.Wherein, pre-charge resistance is selected according to charging duration, and in the present embodiment, charging duration is 600ms, resistance value R=-t/Cln ((U-Uc)/U)=-0.6/ (0.00792*ln ((144-0115)/144))=50
Figure 93535DEST_PATH_IMAGE002
, resistor power should be not less than P= / R=144*144/50=415W; Be that pre-charge resistance can select 50
Figure 755777DEST_PATH_IMAGE002
, 700W; Motor main relay electric current is considered certain allowance according to motor rated power/battery rated voltage 8kW/144V=55A, selects 300A, and pre-charge-relay is according to battery rated voltage/pre-charge resistance 144V/50
Figure 579115DEST_PATH_IMAGE002
=3A considers certain allowance, selects 10A.
The high voltage power distribution module, principle is illustrated as shown in Figure 4.For preventing short circuit, at the distribution input end, the direct current protecting device is housed.Power distribution circuit is a series of electric-controlled type high-voltage relays, controls break-make with safe and reasonable ground each high pressure consumer of on/off by the integrated power supply controller.The relay of drive motor explains at pre-charge module, and the size of current of its wire fuse keeps certain allowance and is chosen as 100A according to motor rated power/cell pressure; Electric air-conditioning is 1.5kW, and same rule calculates its relay and wire fuse is all selected 20A; Electric powered steering is 2kW, and same rule calculates its relay and wire fuse is all selected 30A; DC/DC1.5kW, same rule calculates its relay and wire fuse is all selected 20A; Because each consumer gross horsepower is 13kW, same rule is calculated, and total direct current protecting device is selected 120A.
Above modules has respectively own specific function, the work of working in coordination after combining, the function of complete realization management pure electric automobile high voltage power distribution.Insulation monitoring module is measured the voltage between high pressure both positive and negative polarity and electric chassis, and sends into integrated power supply controller AD module and carry out the insulation resistance judgement; After the Smoke Detection module is processed testing circuit, signal is sent into integrated power supply controller AD module, to detect smokescope; Impact detection module output switch amount signal is sent into integrated power supply controller external interrupt, carries out collision status by the integrated power supply controller and judges; The high-voltage relay of pre-charge module and the high-voltage relay of high voltage power distribution module are controlled in the switching value output of integrated power supply controller after driver module drives.When naked risk, non smoke (fire), collisionless occured, the integrated power supply controller accepted directly that normal preliminary filling is carried out in instruction that entire car controller sends and high voltage power distribution is controlled; When insulation, collision, smog equivalent risk being detected, relevant information and risk processing demands that the integrated power supply controller sends in conjunction with entire car controller are cut off or part is cut off pre-charge module and each relay of high voltage power distribution module.
The utility model can also have other embodiment, and the technical scheme that the equal replacement of all employings or equivalent transformation form is within all dropping on the claimed scope of the utility model.

Claims (8)

1. the integrated power source apparatus of a pure electric automobile, is characterized in that: comprise integrated power supply controller (1), communication module (2), insulation monitoring module (3), Smoke Detection module (4), impact detection module (5), pre-charge module (6) and high voltage power distribution module (7); Described communication module (2) is communicated by letter with entire car controller, current vehicle condition information, power-supply system status information are informed entire car controller, the output of described insulation monitoring module (3), Smoke Detection module (4) and impact detection module (5) connects respectively the analog-to-digital conversion module of integrated power supply controller (1), carry out signal measurement, the control algorithm signal of described integrated power supply controller (1) is through pre-charge module (6) and high voltage power distribution module (7) output.
2. the integrated power source apparatus of pure electric automobile as claimed in claim 1, it is characterized in that: described integrated power supply controller (1) is 16 or 32 automotive grade microcontrollers.
3. the integrated power source apparatus of pure electric automobile as claimed in claim 1 is characterized in that: described communication module (2) is by CAN bus and entire car controller communication.
4. the integrated power source apparatus of pure electric automobile as claimed in claim 1 is characterized in that: described insulation monitoring module (3) detects the positive and negative level of high-tension current to the resistance on vehicle body ground, sends into integrated power supply controller AD module and carries out insulation resistance and judge.
5. the integrated power source apparatus of pure electric automobile as claimed in claim 1 is characterized in that: after described Smoke Detection module (4) testing circuit is processed, signal is sent into integrated power supply controller AD module, detects the smokescope in the compartment.
6. the integrated power source apparatus of pure electric automobile as claimed in claim 1, it is characterized in that: described impact detection module (5) output switch amount signal is sent into the integrated power supply controller, carries out collision status by the integrated power supply controller and judges.
7. the integrated power source apparatus of pure electric automobile as claimed in claim 1 is characterized in that: described pre-charge module (6) is controlled the pre-charge circuit break-make by controlling high-voltage relay.
8. the integrated power source apparatus of pure electric automobile as claimed in claim 1; it is characterized in that: described high voltage power distribution module (7) comprises direct current protecting device, high-voltage relay, and described integrated power supply controller (1) is according to entire car controller order, the class of insulation, smokescope and collide grade output distribution control command to the high voltage power distribution module.
CN 201220609848 2012-11-19 2012-11-19 Integrated power device of pure electric vehicle Expired - Lifetime CN202923408U (en)

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Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104608639A (en) * 2014-12-24 2015-05-13 山东新大洋电动车有限公司 High-voltage electrical connector for pure electric vehicles
CN107147873A (en) * 2017-05-27 2017-09-08 上海挚达科技发展有限公司 Intelligent charging spot with camera and charging pile operation method
DE102018002373A1 (en) 2018-03-22 2018-09-27 Daimler Ag High-voltage component arrangement with an electrical contact on or in a pressure compensation element for power interruption
DE102018002381A1 (en) 2018-03-22 2018-10-04 Daimler Ag High-voltage component arrangement with a protective device for the protection of high-voltage components
DE102018002380A1 (en) 2018-03-22 2018-10-04 Daimler Ag Short circuit detection by a pressure sensor and initiation of the vehicle reaction

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104608639A (en) * 2014-12-24 2015-05-13 山东新大洋电动车有限公司 High-voltage electrical connector for pure electric vehicles
CN104608639B (en) * 2014-12-24 2017-03-08 山东新大洋电动车有限公司 A kind of pure electric automobile high-tension connector
CN107147873A (en) * 2017-05-27 2017-09-08 上海挚达科技发展有限公司 Intelligent charging spot with camera and charging pile operation method
CN107147873B (en) * 2017-05-27 2023-10-03 上海挚达科技发展股份有限公司 Intelligent charging pile with camera and charging pile operation method
DE102018002373A1 (en) 2018-03-22 2018-09-27 Daimler Ag High-voltage component arrangement with an electrical contact on or in a pressure compensation element for power interruption
DE102018002381A1 (en) 2018-03-22 2018-10-04 Daimler Ag High-voltage component arrangement with a protective device for the protection of high-voltage components
DE102018002380A1 (en) 2018-03-22 2018-10-04 Daimler Ag Short circuit detection by a pressure sensor and initiation of the vehicle reaction

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Granted publication date: 20130508