CN205918651U - New energy automobile electronic pump and control system - Google Patents

Abstract

New energy automobile electronic pump and control system. Have sealed removablely go up in, casing down. Go up, the mesochite is internal has a ceramic rotor center axle, there are fixed shroud and last axle bed in the upper end, the lower extreme is fixed in well casing, the rotatory pottery porcelain shaft cover of periphery dress, it is as an organic whole with the impeller body, impeller cover preparation. Rotor ferrite lattice and steel sheet as an organic whole is fixed in impeller body plane down. Internal stator and the control of being of well inferior valve. The communication module that has motor drive that the MOS nest of tubes becomes, singlechip, fault detection, be connected with the automobile water pump controller etc. Not only solved high, the inefficiency of brush motor energy consumption, and structural waterproof nature is good, small and exquisite light, it is convenient to maintain. There is shroud water small in noise. Troubles such as but real time monitoring gets rid of temperature, voltage, electric current, does to be changeed, stifled commentaries on classics.

Description

New-energy automobile electronic water pump and control system

(1) technical field: this utility model is related to a kind of car engine electronic water pump, for automobile engine cooling. Belong to engine cool class (f01p), non-varactor pump class (f04d).

(2) background technology

Developing rapidly with auto industry, huge numbers of families come into by automobile, the demand also day to automobile for the people Benefit increases, and leads to automobile vendor constantly to lift the parts performance of automobile, more can meet customer requirement to itself product, wherein Improvement to the electronic water pump to the cooling of car heating part for the realization is just particularly important.

The motor of orthodox car electronic water pump for engine is electric brush type communicating DC motor, and motor stator is permanent magnetism Body, rotor is switched on winding, when winding passes to electric current, produces magnetic field, produces counteracting force with the magnetic field of stator permanent magnet, makes to turn Son rotates.But rotor winding needs constantly to commutate by brush in the running, just can continuously run.Because brush does not stop and commutation Piece rubs, and produces a large amount of carbon dusts, leads to motor often to be safeguarded, reduce work efficiency.And because brush contact resistance produces accordingly Loss, leads to that electronic water pump heating is big, high energy consumption, efficiency are low, noise is big, short life, is not easy to speed governing it is difficult to applicable new forms of energy The demand of automobile.

Development with the control technology and society raising to power conservation requirement, brushless direct current motor as one kind new, Efficient motor is widely used.In existing disclosed electronic water pump patent, provide the brushless of different structure The electronic water pump of dc motor, its purpose realized and effect are different.

Chinese utility model patent is disclosed<a kind of temperature control electronic water pump>(zl201520091946.3), and water impeller is also Up, but because rotor of motor having no brush is arranged in stator inner ring, there is the hidden danger that top pump hydroecium drains to bore of stator under water.

Existing disclosed brushless motor electronic water pump control system has following deficiency: lacks to pump working state and blocks up The monitor in real time comprehensively such as transit telegram police, and the control system of electronic water pump once breaks down, it will bring serious harm to automobile.

(3) content of the invention:

New-energy automobile electronic water pump and control system that this utility model provides, one of purpose is to solve above-mentioned tradition to have The heating that brush motor electronic water pump exists is big, can not speed governing, be not easy to safeguard, high energy consumption, noise is big, short life.The two of purpose Solve existing brushless electric machine electronic water pump structure and there is the safety problems such as leak trouble.The three of purpose are to solve existing brushless electric machine Electronic water pump does not have the facilities such as fault overall monitor, warning, brings potential safety hazard to automobile.

Technical scheme is as follows: new-energy automobile electronic water pump；Including housing, water impeller, rotor, stator and control section； It is characterized in that:

1) housing be upper shell 1 from top to bottom, middle housing 4 and lower house 12；Each housing circumference is uniformly multiple outside Prominent hole seat, three housings are connected fastening with a root hole seat tapping screw 4.3 by every hole；Upper, middle housing or in, connect between lower house It is respectively provided with the upper and lower sealing ring of rubber 4.1,4.2 at junction.2) it is above, water impeller one integral piece and rotor between middle housing, referred to as pump water Room, has in it: upper shell top is water inlet 1.1, and on waterleaf impeller blade water outlet, shell has tangential outlet 1.2； It is provided with motionless ceramic rotor central shaft 1.3: rotor center axle upper end is cased with a cover for current deflecting below water inlet Lid 1.4, cover lid is connected and fixed on upper shell by the cover lid muscle 1.5 being connected；Set, in cover lid, the pottery being stuck in outside rotor center axle The upper axle bed 1b making；In the center axle bed 4b that pottery on housing in the insertion of rotor center axle lower end is made.Rotor center axle and leaf Suit the Ceramic shaft sleeve 2.3 with impeller body rotation between wheel body 2.2 radial direction, impeller cover covers on impeller body；Impeller body, ceramic shaft Set and impeller cover composition make the water impeller one integral piece 2 being integrated；Form impeller in the heart in impeller cover Upper cylindrical ring and impeller body Ring-type water inlet 2w.Rotor 3 is the one piece of two circular ferrite Magnet 3.2 to pole and the ring steel plate of one piece of formation field circuit The 3.1 Magnet one integral piece being bonded in one, and water impeller one integral piece bottom surface is fixed on by the rotor tapping screw 3.3 of center.3) In, between lower house be stator and control system, be provided with it: circumference uniform six winding enamel-covered wires 5.1 shapes of inductance coil The bobbin winder base 5.3 becoming, one piece of stator core 5.2 is inserted at each inductance coil center, and six bobbin winder bases are vertically all fixedly mounted on On following chain connecting plate 7, six are provided with ring-shaped silicon steel sheet 6 between bobbin winder base and chain connecting plate；Six inductance coils are to connect two-by-two The three-phase energising winding 5 being formed.Five arranged side by side vertical contact pins 8, the contact pin box 8.1 outside insertion lower casing are fixed in chain connecting plate side Interior；Sequentially it is provided with printed circuit board (PCB) 9, radiating aluminium block 10, panel 11 below chain connecting plate, and with controlling vertical tapping screw 4.4 Panel, radiating aluminium block, printed circuit board (PCB), chain connecting plate being connected and fixed on middle housing from bottom to top；The bottom of lower house Portion is provided with a waterproof and breathable plug 12b.

The control system of above-mentioned new-energy automobile electronic water pump, is characterized in that:

Major loop: include sequentially electrically connect power input 13, electric power system 14, motor driver 15, brush DC electricity The stator winding 5 of machine 16；Electric power system adopts filter circuit, and motor driver adopts 6 n-channel power mos pipe q1-q6 compositions Full bridge inverter 15.Control loop: include 1) set single-chip microcomputer 18；2) connect the communication of auto pump controller and single-chip microcomputer Module 20；3) outfan connects temperature, electric current, voltage, stall and the dry failure detector circuit 17 turning of single-chip microcomputer: 1. temperature detection Circuit 17.1: be made up of temperature sensor and temperature a/d change-over circuit 17.1c, finally connect single-chip microcomputer input interface 18.1；Temperature Sensor is made up of the ntc critesistor 17.1a being attached on panel and temperature sensor circuit 17.1b；2. current detecting electricity Road 17.2: set pressure reduction sample circuit 17.2a and pressure reduction a/d change-over circuit 17.2b and finally connect single-chip microcomputer input interface 18.2, pressure reduction The pressure reduction producing for motor driver energising bus head end resistance rs two ends；3. voltage detecting circuit 17.3: set motor driver The voltage collection circuit 17.3a and voltage a/d change-over circuit 17.3b of energising bus head end dress, finally connects single-chip microcomputer input interface 18.3；4. do and turn and lock-rotor detection circuit 17.4: by the counter electromotive force Acquisition Circuit of the stator coil head end being sequentially connected with 17.4a, rotation speed detection unit 17.4b, electric current-rotary speed comparator 17.4c composition；Finally connect single-chip microcomputer input interface 18.4；4) Single-chip microcomputer execution circuit is pre-driver 19, and predriver output connects the grid of mos pipe q1-q6, full bridge inverter brachium pontis End points a, b, c meet stator coil head end a, b, c.

This utility model beneficial effect:

1) brushless electric machine is adopted to drive water impeller to rotate, the final purpose obtaining pump water.Avoid electric brush type commutation electronic Machine high energy consumption, noise are big, short life the problems such as.2) general layout of this brushless electric machine electronic water pump adopts rotor and water impeller all to exist In the pump hydroecium of top, the structure of the bore of stator in lower section for the stator has following effect: 1. rotor directly uses tapping screw state to schedule water Impeller one integral piece bottom surface, the structure ratio being in transmission connection with other brushless electric machines and water impeller, arrangement is the compactest.And because rotor adopts Ferrite, water does not affect on rotor magnetic.2. water impeller, in upper middle housing, is energized winding in middle lower casing body, and upper, In, have upper and lower sealing ring between lower house respectively, therefore, population structure waterproof leaks are good.There is scientific structure, small volume and less weight. 3) set cover lid 1.4, optimize walking path from water inlet to discharge outlet for the water, improve the work efficiency of water pump, increased water The lift of pump, it is to avoid traditional water pump water flows after entering water inlet everywhere, reduces noise of uttering long and high-pitched sounds.4) whole in the water impeller of rotation Part and fixing rotor center between centers set the Ceramic shaft sleeve 2.3 of rotation, and the center of the fixing upper axle bed 1b of pottery, pottery Axle bed 4b etc., can prevent water impeller one integral piece radially, axially vibration during pump working, reduce frictional force each other, particularly Between rotor center axle and Ceramic shaft sleeve.5) structure is easy to Operation and Maintenance: 1. upper, middle and lower shell dismounting is convenient.2. rotor and waterleaf Connect between wheel one integral piece and use tapping screw 3.3 easy accessibility.3. stator intracavity controls vertical tapping screw 13 to be connected control Plate 11 etc., easy accessibility.6) see Fig. 3, control system achieves the monitor in real time to pump working state.When single-chip microcomputer detects Excess temperature, current failure, under-voltage, over-pressed, stall, dry when the abnormal condition such as turning in motor, and can take corresponding protection in real time Measure, and in time state parameter information is conveyed to auto pump controller by communication module.

(4) brief description

The positive cross-sectional schematic of Fig. 1 this utility model overall structure.

Fig. 2 is a-a sectional view in Fig. 1；I.e. stator schematic top plan view.

Fig. 3 control system schematic circuit block diagram.

Upper in figure description of symbols:

Upper shell 1, water inlet 1.1, outlet 1.2, rotor center axle 1.3, cover lid 1.4, cover lid muscle 1.5, upper casing body opening Seat 1a, upper axle bed 1b.Water impeller one integral piece 2: impeller cover 2.1, impeller body 2.2, Ceramic shaft sleeve 2.3.Rotor 3: ring steel plate 3.1, Circular ferrite Magnet 3.2, rotor tapping screw 3.3.Middle housing 4: middle housing bore seat 4a, center axle bed 4b, upper sealing ring 4.1, lower seal 4.2, hole seat tapping screw 4.3, control vertical tapping screw 4.4.Stator 5: hot-wire coil 5.1, stator ferrum Core 5.2, bobbin winder base 5.3.Stalloy 6.Chain connecting plate 7.Contact pin 8, contact pin box 8.1.Printed circuit board (PCB) 9.Radiating aluminium block 10.Panel 11.Lower house 12, lower casing body opening seat 12a, waterproof and breathable plug 12b.

Control system: power input 13, electric power system 14, motor driver 15, brshless DC motor 16.Fault detect electricity Road 17: temperature detection 17.1, current detecting 17.2, electro-detection 17.3, dry turn and stall detection 17.4.Single-chip microcomputer 18, pre- drive Dynamic device 19, communication module 20.Watchdog circuit 22.Auto pump controller 21.

(5) specific embodiment

Below in conjunction with the accompanying drawings this utility model is described in further detail.

1) general layout and shell mechanism: shell has upper shell 1, middle housing 4 and lower house 12 from top to bottom.Upper, middle shell It is set to pump hydroecium between body, is provided with it: rotor, impeller.In, be set to bore of stator between lower house, be provided with it: stator and control unit Point.See Fig. 1, along upper, middle and lower each housing circumference difference uniformly multiple hole seat 1a, 4a, 12a outwardly, every hole is with one Three housings are connected fastening by hole seat tapping screw 4.3.Above, equipped with sealing ring on rubber 4.1 at middle housing connection surface；In, lower casing Between body, equipped with rubber lower seal 4.2, two sealing rings are attached separately in middle housing upper and lower plane fluting joint face, form sealing The detachable housing of vibration damping.

2) be provided with pump hydroecium: see Fig. 1, upper housing top end be water inlet 1.1, at water impeller blade exit on shell cut To outlet 1.2.Just to below water inlet, equipped with motionless ceramic rotor central shaft 1.3, rotor center axle upper end fixes one For the cover lid 1.4 of current deflecting, and 3 cover lid muscle 1.5 are set by cover lid circumference it is connected and fixed on upper outer casing inner wall.In cover lid If the upper axle bed 1b that the pottery being stuck in outside rotor center axle is made；During pottery on housing 4 in the insertion of rotor center axle lower end is made In spindle seat 4b, fixation is in shell, middle shell center all the time to make rotor center axle.

It is set with the Ceramic shaft sleeve 2.3 rotating with impeller body, impeller cover between seeing Fig. 1, rotor center axle and impeller body 2.2 radially 2.1 cover on impeller body；Impeller body, Ceramic shaft sleeve and impeller cover composition make the water impeller one integral piece 2 being integrated.Impeller cover top Form impeller ring-type water inlet 2w in the heart in cylinder ring and impeller body.Impeller body 2.2 is moulded in outside Ceramic shaft sleeve 2.3；Impeller cover 2.1 direct welding are covered on impeller body 2.2.

See Fig. 1, rotor 3 includes forming field circuit effect by the one piece of 2 circular ferrite Magnet 3.2 to pole and one piece Ring steel plate 3.1 bonds together the Magnet one integral piece of composition, and is fixed on water impeller by the rotor tapping screw 3.3 of center One integral piece 2 bottom surface forms one, rotor, water impeller one integral piece is fixed as an entirety simultaneously, becomes relative rotor central axis Rotary body.Rotor center axle 1.3 passes through the center of magnet one integral piece and water impeller one integral piece, and it is whole to be in upper shell, water impeller all the time Part, rotor, the center of middle housing.

3) it is stator and control system in, between lower house, is provided with it: see Fig. 1, Fig. 2, stator has uniform six of circumference to twine The bobbin winder base 5.3 of the inductance coil 5.1 being formed around enamel-covered wire, and a stator core is inserted at each inductance coil 5.1 center 5.2, (in order to increase the magnetic flux of inductance coil, thus reaching the maximum conversion of electric energy and magnetic energy).Six bobbin winder bases are vertically equal Fixed installation, on following chain connecting plate 7, is provided with ring-shaped silicon steel sheet 6, stalloy 6 between six bobbin winder bases 5.3 and chain connecting plate 7 Raising iron core magnetic conduction ability can be played, strengthen magnetic density, reduce eddy-current loss effect.See Fig. 3, six inductance coils 5.1 Threephase stator energising winding 5 is connected into after connecting two-by-two.

See that Fig. 1, energising winding 5 and stalloy 6 are vertically fixed on chain connecting plate 7, and fix 5 arranged side by side in chain connecting plate side Vertical contact pin 8, in the contact pin box 8.1 outside insertion lower casing.Sequentially be provided with below chain connecting plate printed circuit board (PCB) 9, radiating aluminium block 10, Panel 11, and with control vertical tapping screw 4.4 from bottom to top by panel 11, radiating aluminium block 10, printed circuit board (PCB) 9, Chain connecting plate 7 is connected and fixed on middle housing 4.The bottom of lower house 12 is provided with a waterproof and breathable plug 12b, plays radiating and prevents The function of water.See Fig. 2, control vertical tapping screw 4.4 to be evenly distributed 3.

Work process:

1) first pass through the position of electric circuit inspection magnet one integral piece 3, then feed back to panel 11, panel gives different leading to Electric winding 5 is energized, and produces rotating excitation field.2) rotating excitation field acts in magnet one integral piece, can play commutation function, makes rotor continuous Operating.3) see Fig. 1, drive water impeller one integral piece constantly to rotate by rotor tapping screw 3.3, so that external water sucks, from Water inlet, along smooth cover lid 1.4, axially flows into water impeller one integral piece by impeller ring-type water inlet 2w, enters back into impeller leaf Piece, the tangential pipe outlet 1.2 of last rapid delivery is excluded, and is finally reached the purpose obtaining pump water.

The control system of the present embodiment above-mentioned new-energy automobile electronic water pump is as follows:

See Fig. 3, major loop includes: the power input 13 that sequentially electrically connects, electric power system 14, motor driver 15, direct current The stator winding 5 of brushless electric machine 16.Power input 13 adopts 12v direct current supply.Electric power system 14 adopts filter circuit.Motor drives Dynamic device adopts the full bridge inverter 15 of 6 n-channel power mos pipe q1-q6 compositions.Filter circuit carries after filtering power supply disturbance Supply motor driver 15 and water pump inner control loop.See Fig. 3, Fig. 1, above power input 13, electric power system 14, motor drive Dynamic device 15 is all provided with panel 11.Stator winding sections in DC brushless motor 16 are placed on printed circuit board 9.

See Fig. 3, control loop includes (seeing Fig. 1, be each provided on panel 11) simultaneously: 1) sets single-chip microcomputer 18: single-chip microcomputer is adopted With 16, it is internally integrated 4 independent 16 bit timing device modules with capture and comparing function, 3 have programmable frequency Programmable 12 pwm units of rate function, 10 adc transducers (2 μ s conversion time) and dma access.2) set connection automobile water The communication module 20 of pump controller 21 and single-chip microcomputer 18.

3) set outfan connect the temperature of single-chip microcomputer, electric current, voltage, dry turn and stall following failure detector circuit 17:

1. temperature sensing circuit 17.1: see Fig. 3, be made up of temperature sensor and temperature a/d change-over circuit 17.1c, finally Connect single-chip microcomputer input interface 18.1.Temperature sensor is by the negative temperature coefficient ntc critesistor 17.1a being attached on panel and temperature Degree sensor circuit 17.1b composition.

2. current detection circuit 17.2: see Fig. 3, seal in resistance rs, resistance on motor driver 15 energising bus head end Rs two ends have tap to form pressure reduction Acquisition Circuit 17.2a, then through pressure reduction a/d change-over circuit 17.2b and single-chip microcomputer input interface 18.2 connections.Single-chip microcomputer passes through the pressure difference on real-time detection resistance rs, just can calculate and detect real-time bus current.

3. voltage detecting circuit 17.3: see Fig. 3, the voltage collection circuit of bus head end dress if motor driver is energized 17.3a and voltage a/d change-over circuit 17.3b, finally connects single-chip microcomputer input interface 18.3.

4. do and turn and lock-rotor detection circuit 17.4: see Fig. 3, by the counter electromotive force collection of the stator coil head end being sequentially connected with Circuit 17.4a, rotation speed detection unit 17.4b, electric current-rotary speed comparator 17.4c composition；Finally connect single-chip microcomputer input interface 18.4.The back-emf signal of the stator coil of collection is transmitted in rotation speed detection unit 17.4b and is converted, obtain in real time Rotating speed；To compare in incoming for rotating speed electric current-rotary speed comparator 17.4c again: electric current very little rotating speed is very high to be judged as dry turn, electricity Very big rotating speed is very low is judged as stall for stream.

4) single-chip microcomputer execution circuit is pre-driver 21: predriver output connects grid (the upper bridge leakage of mos pipe q1-q6 Pole 15a connects positive source, and lower bridge source electrode 15b connects power cathode), full bridge inverter brachium pontis end a, b, c connect DC brushless motor 16 stator coil 5 head end a, b, c.

Claims (2)

1. new-energy automobile electronic water pump；Including housing, water impeller, rotor, stator and control section；It is characterized in that:

1) housing be upper shell (1) from top to bottom, middle housing (4) and lower house (12)；Each housing circumference uniformly multiple to The hole seat projecting outward, three housings are connected fastening with root hole seat tapping screw (4.3) by every hole；Upper, middle housing or in, lower house Between be respectively provided with the upper and lower sealing ring of rubber (4.1,4.2) at joint face；

2) it is above, water impeller one integral piece and rotor between middle housing, including: upper shell top is water inlet (1.1), in waterleaf impeller blade The tangential outlet of upper shell (1.2) at water outlet；It is provided with motionless ceramic rotor central shaft (1.3): rotor center below water inlet Axle upper end is cased with a cover lid (1.4) for current deflecting, and cover lid is connected and fixed on upper shell by the cover lid muscle being connected；Cover The upper axle bed (1b) that the pottery being stuck in outside rotor center axle is made is set in lid；Pottery work on housing in the insertion of rotor center axle lower end Center axle bed (4b) in；

Suit the Ceramic shaft sleeve (2.3) with impeller body rotation between rotor center axle and impeller body (2.2) radial direction, impeller cover covers On impeller body；Impeller body, Ceramic shaft sleeve and impeller cover composition make the water impeller one integral piece (2) being integrated；Impeller cover Upper cylindrical Form impeller ring-type water inlet (2w) in the heart in ring and impeller body；

Rotor (3) is the one piece of two circular ferrite Magnet (3.1) to pole and the ring steel plate (3.2) of one piece of formation field circuit It is bonded in the Magnet one integral piece of one, and water impeller one integral piece bottom surface is fixed on by the rotor tapping screw (3.3) of center；

3) it is stator and control system in, between lower house, is provided with it: the inductance coil of the uniform six winding enamel-covered wires of circumference (5.1) bobbin winder base (5.3) being formed, one piece of stator core (5.2) is inserted at each inductance coil center, and six bobbin winder bases are vertical All fixedly mount on following chain connecting plate (7), six are provided with ring-shaped silicon steel sheet (6) between bobbin winder base and chain connecting plate；Six electricity Sense coil be connect two-by-two formation three-phase energising winding (5)；

Five arranged side by side vertical contact pins (8) are fixed in chain connecting plate side, in the contact pin box (8.1) outside insertion lower casing；Below chain connecting plate Sequentially it is provided with printed circuit board (PCB) (9), radiating aluminium block (10), panel (11), and with the vertical tapping screw of control (4.4) from lower On panel, radiating aluminium block, printed circuit board (PCB), chain connecting plate are connected and fixed on middle housing；The bottom of lower house is provided with One waterproof and breathable plug (12b).

2. as described in claim 1 new-energy automobile electronic water pump control system, it is characterized in that:

Major loop: include sequentially electrically connect power input (13), electric power system (14), motor driver (15), brush DC The stator winding (5) of motor (16)；Electric power system adopts filter circuit, and motor driver adopts 6 n-channel power mos pipe q1- The full bridge inverter of q6 composition；

Control loop: include 1) set single-chip microcomputer (18)；2) connect the communication module (20) of auto pump controller and single-chip microcomputer；3) Outfan connects temperature, electric current, voltage, stall and the dry failure detector circuit (17) turning of single-chip microcomputer: 1. temperature sensing circuit: by Temperature sensor and temperature a/d change-over circuit composition, finally connect single-chip microcomputer input interface (18.1)；Temperature sensor is by being attached to control Ntc critesistor in making sheet and temperature sensor circuit composition；2. current detection circuit: set pressure reduction sample circuit and pressure reduction A/d change-over circuit finally connects single-chip microcomputer input interface (18.2), and pressure reduction is motor driver energising bus head end resistance rs two ends The pressure reduction producing；3. voltage detecting circuit: set the voltage collection circuit of motor driver energising bus head end dress and voltage a/d turns Change circuit, finally connect single-chip microcomputer input interface (18.3)；4. do and turn and lock-rotor detection circuit: be first by the stator coil being sequentially connected with The counter electromotive force Acquisition Circuit at end, rotation speed detection unit, electric current-rotary speed comparator composition；Finally connect single-chip microcomputer input interface (18.4)；4) single-chip microcomputer execution circuit is pre-driver (19), and predriver output connects the grid of mos pipe q1-q6, and full-bridge is inverse Become circuit bridge arm end points a, b, c and meet stator coil head end a, b, c.