CN105416088A - Full vehicle power system based on permanent magnet motor counter electromotive force protection device - Google Patents
Full vehicle power system based on permanent magnet motor counter electromotive force protection device Download PDFInfo
- Publication number
- CN105416088A CN105416088A CN201510870001.6A CN201510870001A CN105416088A CN 105416088 A CN105416088 A CN 105416088A CN 201510870001 A CN201510870001 A CN 201510870001A CN 105416088 A CN105416088 A CN 105416088A
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- fender guard
- solid
- detecting device
- state relay
- electrically connected
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- 238000001514 detection method Methods 0.000 claims abstract description 8
- 238000005070 sampling Methods 0.000 claims description 61
- 230000005540 biological transmission Effects 0.000 claims description 32
- 230000005611 electricity Effects 0.000 claims description 12
- 238000002955 isolation Methods 0.000 claims description 5
- 230000005389 magnetism Effects 0.000 abstract 2
- 230000000694 effects Effects 0.000 description 5
- 238000000034 method Methods 0.000 description 4
- 230000007123 defense Effects 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 3
- 230000001737 promoting effect Effects 0.000 description 3
- 238000011897 real-time detection Methods 0.000 description 3
- 230000009286 beneficial effect Effects 0.000 description 2
- 230000001360 synchronised effect Effects 0.000 description 2
- WHXSMMKQMYFTQS-UHFFFAOYSA-N Lithium Chemical compound [Li] WHXSMMKQMYFTQS-UHFFFAOYSA-N 0.000 description 1
- 239000003990 capacitor Substances 0.000 description 1
- 230000002045 lasting effect Effects 0.000 description 1
- 229910052744 lithium Inorganic materials 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60L—PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
- B60L15/00—Methods, circuits, or devices for controlling the traction-motor speed of electrically-propelled vehicles
- B60L15/20—Methods, circuits, or devices for controlling the traction-motor speed of electrically-propelled vehicles for control of the vehicle or its driving motor to achieve a desired performance, e.g. speed, torque, programmed variation of speed
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60L—PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
- B60L3/00—Electric devices on electrically-propelled vehicles for safety purposes; Monitoring operating variables, e.g. speed, deceleration or energy consumption
- B60L3/04—Cutting off the power supply under fault conditions
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T10/00—Road transport of goods or passengers
- Y02T10/60—Other road transportation technologies with climate change mitigation effect
- Y02T10/72—Electric energy management in electromobility
Abstract
The invention relates to the field of permanent magnet motors, in particular to a full vehicle power system based on a permanent magnet motor counter electromotive force protection device. The protection device is additionally arranged on paths between a motor controller and a motor. The protection device is provided with a first-level protection device and a second-level protection device. Three solid-state relays are arranged on the three-phase electrical paths respectively to serve as the first-level protection device. A detection device is used for detecting current values and voltage values of the paths in real time. When a weak magnetism failure happens, the detection device controls the solid-state relays to perform disconnection and then continues detection. On a normal condition, the purpose of the protection device can be achieved through the solid-state relays. But according to the protection device, in view of a failure of the first-level protection device, that is, the paths still have currents and voltages; at the moment, the detection device conducts communication with an external full vehicle controller to inform the full vehicle controller of the first-level protection failure; the full vehicle controller can trigger the second-level protection device to perform disconnection; accordingly, the risk of sustaining charging on the condition of the weak magnetism failure is avoided.
Description
Technical field
The present invention relates to permanent magnet motor field, particularly relate to a kind of car load power system based on magneto-electric machine counter potential fender guard.
Background technology
Along with wideling popularize of national new-energy automobile, new-energy automobile requires the work efficiency significantly improving electrical motor under the prerequisite ensureing course continuation mileage, be proposed the scheme adopting permagnetic synchronous motor, make full use of permagnetic synchronous motor energy density large, while the advantage that efficiency is high, bring the hidden danger that automatically controlled weak magnetic inefficacy rear motor counter electromotive force is out of control too.
When the weak magnetic of electric machine controller lost efficacy, motor carries out reverse rectification by three-phase loop, its voltage rises along with current motor rotating speed and current vehicle speed raising, in case of in the situation of lasting slope, car load continues at a high speed then inverse electromotive force voltage keeps and increases, under electric machine controller weak magnetic failure conditions, motor carries out continuing charging to closed-center system (lithium cell, super capacitor etc.) by the built-in IGBT loop of electric machine controller, just likely closed-center system is caused and overcharge, cause possibility that is on fire or blast.
Summary of the invention
Technical matters to be solved by this invention is: provide a kind of safe and reliable car load power system based on magneto-electric machine counter potential fender guard.
In order to solve the problems of the technologies described above, the technical solution used in the present invention is:
A kind of car load power system based on magneto-electric machine counter potential fender guard, comprise closed-center system, electric machine controller and motor, described closed-center system is electrically connected with electric machine controller, and described electric machine controller is electrically connected with motor by three-phase electricity, also comprises fender guard; Described fender guard is arranged on the three-phase path between electric machine controller and motor;
Described fender guard comprises first order fender guard, detecting device and second stage fender guard;
Described first order fender guard comprises the first solid-state relay, the second solid-state relay and the 3rd solid-state relay; Three articles of paths that described first solid-state relay, the second solid-state relay and the 3rd solid-state relay are separately positioned on three-phase electricity are electrically connected with detecting device respectively;
Described first solid-state relay and the path of motor are provided with the first sampling point be electrically connected with detecting device; Described second solid-state relay and the path of motor are provided with the second sampling point be electrically connected with detecting device; Described 3rd solid-state relay and the path of motor are provided with the 3rd sampling point be electrically connected with detecting device;
Described second stage fender guard is circuit breaker; Described circuit breaker comprises the trip switch controlling circuit breaker energize or off-state; The secondary contact of described circuit breaker are electrically connected with detecting device;
Described trip switch, detecting device are connected with external entire car controller respectively;
Described detecting device detect the first sampling point, the second sampling point, the 3rd sampling point voltage and current Data Concurrent send testing result to entire car controller;
The testing result that described entire car controller receiving detection device sends.
Beneficial effect of the present invention is: on the path of electric machine controller and motor, set up fender guard, for promoting safe reliability, this fender guard is provided with first order fender guard and second stage fender guard, as first order fender guard on the path three solid-state relay being separately positioned on three-phase electricity, current value in the real-time detection path of detecting device and magnitude of voltage, when there is weak magnetic failure conditions, detecting device control three solid-state relay perform open circuits after and continue to detect, the object of fender guard just can be realized under normal circumstances by solid-state relay, but the design of fender guard provided by the invention considers when occurring the situation that first order fender guard lost efficacy, electric current and voltage is also there is in path after being three solid-state relay execution open circuits, now detecting device communicates with external entire car controller, inform first order shielding failure, entire car controller can trigger second stage fender guard (circuit breaker) and perform open circuit, thus under avoiding weak magnetic failure conditions, continue the danger of charging.First order fender guard adopts solid-state relay to belong to electronic switch, and second stage fender guard adopts circuit breaker to belong to mechanical switch, and the safety of the second stage is better than the first order; From cut-out reliability, mechanical type is better than electronic type.Therefore using circuit breaker higher for reliability as last line of defense.
It should be noted that: under normal circumstances, circuit breaker is closed, is similar to short-circuit line.
Accompanying drawing explanation
Fig. 1 is the structural representation of the car load power system based on magneto-electric machine counter potential fender guard of the present invention;
Label declaration:
1, closed-center system; 2, electric machine controller; 3, motor; 4, fender guard; 41, first order fender guard; 411, the first solid-state relay; 412, the second solid-state relay; 413, the 3rd solid-state relay; 42, detecting device; 421, the first sampling point; 422, the second sampling point; 423, the 3rd sampling point; 43, second stage fender guard; 431, trip switch; 432, secondary contact; 5, entire car controller.
Detailed description of the invention
By describing technology contents of the present invention in detail, realized object and effect, accompanying drawing is coordinated to be explained below in conjunction with embodiment.
The design of most critical of the present invention is: on the path of electric machine controller and motor, set up fender guard; described fender guard is provided with first order fender guard (solid-state relay) and second stage fender guard (circuit breaker), promotes safe reliability further.
Please refer to Fig. 1, a kind of car load power system based on magneto-electric machine counter potential fender guard provided by the invention, comprise closed-center system 1, electric machine controller 2 and motor 3, described closed-center system 1 is electrically connected with electric machine controller 2, described electric machine controller 2 is electrically connected with motor 3 by three-phase electricity, also comprises fender guard 4; Described fender guard 4 is arranged on the three-phase path between electric machine controller 2 and motor 3;
Described fender guard 4 comprises first order fender guard 41, detecting device 42 and second stage fender guard 43;
Described first order fender guard 41 comprises the first solid-state relay 411, second solid-state relay 412 and the 3rd solid-state relay 413; Three articles of paths that described first solid-state relay 411, second solid-state relay 412 and the 3rd solid-state relay 413 are separately positioned on three-phase electricity are electrically connected with detecting device 42 respectively;
Described first solid-state relay 411 and the path of motor 3 are provided with the first sampling point 421 be electrically connected with detecting device 42; Described second solid-state relay 412 and the path of motor 3 are provided with the second sampling point 422 be electrically connected with detecting device 42; Described 3rd solid-state relay 413 and the path of motor 3 are provided with the 3rd sampling point 423 be electrically connected with detecting device 42;
Described second stage fender guard 43 is circuit breaker; Described circuit breaker comprises the trip switch 431 controlling circuit breaker energize or off-state; The secondary contact 432 of described circuit breaker are electrically connected with detecting device 42;
Described trip switch 431, detecting device 42 are connected with external entire car controller 5 respectively;
Described detecting device 42 detects the first sampling point 421, second sampling point 422, the voltage and current Data Concurrent of the 3rd sampling point 423 send testing result to entire car controller 5;
The testing result that described entire car controller 5 receiving detection device 42 sends.
From foregoing description, beneficial effect of the present invention is: on the path of electric machine controller and motor, set up fender guard, for promoting safe reliability, this fender guard is provided with first order fender guard and second stage fender guard, as first order fender guard on the path three solid-state relay being separately positioned on three-phase electricity, current value in the real-time detection path of detecting device and magnitude of voltage, when there is weak magnetic failure conditions, detecting device control three solid-state relay perform open circuits after and continue to detect, the object of fender guard just can be realized under normal circumstances by solid-state relay, but the design of fender guard provided by the invention considers when occurring the situation that first order fender guard lost efficacy, electric current and voltage is also there is in path after being three solid-state relay execution open circuits, now detecting device communicates with external entire car controller, inform first order shielding failure, entire car controller can trigger second stage fender guard (circuit breaker) and perform open circuit, thus under avoiding weak magnetic failure conditions, continue the danger of charging.First order fender guard adopts solid-state relay to belong to electronic switch, and second stage fender guard adopts circuit breaker to belong to mechanical switch, and the safety of the second stage is better than the first order; From cut-out reliability, mechanical type is better than electronic type.Therefore using circuit breaker higher for reliability as last line of defense.
Further, described detecting device 42 is communicated with entire car controller 5 by CAN.
Further, described detecting device 42 comprises rectifying circuit, voltage sampling circuit, current sampling circuit and controller; Described rectifying circuit, voltage sampling circuit and current sampling circuit are electrically connected with controller respectively.
Seen from the above description, by the magnitude of voltage of voltage sampling circuit sampling path up-sampling point, the current value of current sampling circuit sampling path up-sampling point, and Real-time Feedback is to controller.
Further, described controller comprises first data transmission passage and the second data transmission channel; Described first data transmission passage is electrically connected with the mouth of voltage sampling circuit; Described second data transmission channel is electrically connected with the mouth of current sampling circuit.
Seen from the above description, first data transmission passage is electrically connected with the mouth of voltage sampling circuit, be used for transmission voltage Value Data, second data transmission channel is electrically connected with the mouth of current sampling circuit, being used for transmission current Value Data, adopting the object of two data transmission channels to be to prevent the impacts such as interference in data transmission procedure.
Further, channel isolation is provided with between described first data transmission passage and the second data transmission channel.
Seen from the above description, the effect of channel isolation is the impacts such as the interference prevented in data transmission procedure, plays safe and reliable effect.
Please refer to Fig. 1, embodiments of the invention one are:
It should be noted that in Fig. 1: U, V, W represent the path of three-phase electricity, Q1, Q2, Q3 represent the first solid-state relay 411, second solid-state relay 412, the 3rd solid-state relay 413 respectively, wherein Q1 can be arranged in U, V, W on any path, Q2, Q3 in like manner, the every bar path of a demand fulfillment arrange a solid-state relay.K in addition
0represent circuit breaker, M represents motor 3 (also can be called drive motor).
A kind of car load power system based on magneto-electric machine counter potential fender guard provided by the invention, comprise closed-center system 1, electric machine controller 2 and motor 3M, described closed-center system 1 is electrically connected with electric machine controller 2, described electric machine controller 2 is electrically connected with motor 3M by three-phase electricity (U, V, W), also comprises fender guard 4; Described fender guard 4 is arranged on the three-phase path between electric machine controller 2 and motor 3M;
Described fender guard 4 comprises first order fender guard 41, detecting device 42 and second stage fender guard 43;
Described first order fender guard 41 comprises the first solid-state relay 411Q1, the second solid-state relay 412Q2 and the 3rd solid-state relay 413Q3; Three articles of paths that described first solid-state relay 411Q1, the second solid-state relay 412Q2 and the 3rd solid-state relay 413Q3 are separately positioned on three-phase electricity are electrically connected with detecting device 42 respectively;
Described first solid-state relay 411Q1 and the path of motor 3M are provided with the first sampling point 421 be electrically connected with detecting device 42; Described second solid-state relay 412Q2 and the path of motor 3M are provided with the second sampling point 422 be electrically connected with detecting device 42; Described 3rd solid-state relay 413Q3 and the path of motor 3M are provided with the 3rd sampling point 423 be electrically connected with detecting device 42;
Described second stage fender guard 43 is circuit breaker K
0; Described circuit breaker K
0comprise the trip switch 431 controlling circuit breaker energize or off-state; The secondary contact 432 of described circuit breaker are electrically connected with detecting device 42;
Described trip switch 431, detecting device 42 are connected with external entire car controller 5 respectively;
Described detecting device 42 detects the first sampling point 421, second sampling point 422, the voltage and current Data Concurrent of the 3rd sampling point 423 send testing result to entire car controller 5;
The testing result that described entire car controller 5 receiving detection device 42 sends.
Wherein, described detecting device 42 is communicated with entire car controller 5 by CAN.
Above-mentioned detecting device 42 comprises rectifying circuit, voltage sampling circuit, current sampling circuit and controller; Described rectifying circuit, voltage sampling circuit and current sampling circuit are electrically connected with controller respectively.By the magnitude of voltage of voltage sampling circuit sampling path up-sampling point, the current value of current sampling circuit sampling path up-sampling point, and Real-time Feedback is to controller.
Above-mentioned controller comprises first data transmission passage and the second data transmission channel; Described first data transmission passage is electrically connected with the mouth of voltage sampling circuit; Described second data transmission channel is electrically connected with the mouth of current sampling circuit.First data transmission passage is electrically connected with the mouth of voltage sampling circuit, be used for transmission voltage Value Data, second data transmission channel is electrically connected with the mouth of current sampling circuit, being used for transmission current Value Data, adopting the object of two data transmission channels to be to prevent the impacts such as interference in data transmission procedure.Channel isolation is provided with between first data transmission passage and the second data transmission channel.The effect of channel isolation is the impacts such as the interference prevented in data transmission procedure, plays safe and reliable effect.
In sum, a kind of car load power system based on magneto-electric machine counter potential fender guard provided by the invention, fender guard set up by the path of electric machine controller and motor, for promoting safe reliability, this fender guard is provided with first order fender guard and second stage fender guard, as first order fender guard on the path three solid-state relay being separately positioned on three-phase electricity, current value in the real-time detection path of detecting device and magnitude of voltage, when there is weak magnetic failure conditions, detecting device control three solid-state relay perform open circuits after and continue to detect, the object of fender guard just can be realized under normal circumstances by solid-state relay, but the design of fender guard provided by the invention considers when occurring the situation that first order fender guard lost efficacy, electric current and voltage is also there is in path after being three solid-state relay execution open circuits, now detecting device communicates with external entire car controller, inform first order shielding failure, entire car controller can trigger second stage fender guard (circuit breaker) and perform open circuit, thus under avoiding weak magnetic failure conditions, continue the danger of charging.First order fender guard adopts solid-state relay to belong to electronic switch, and second stage fender guard adopts circuit breaker to belong to mechanical switch, and the safety of the second stage is better than the first order; From cut-out reliability, mechanical type is better than electronic type.Therefore using circuit breaker higher for reliability as last line of defense.
The foregoing is only embodiments of the invention; not thereby the scope of the claims of the present invention is limited; every equivalents utilizing specification sheets of the present invention and accompanying drawing content to do, or be directly or indirectly used in relevant technical field, be all in like manner included in scope of patent protection of the present invention.
Claims (5)
1. the car load power system based on magneto-electric machine counter potential fender guard, comprise closed-center system, electric machine controller and motor, described closed-center system is electrically connected with electric machine controller, and described electric machine controller is electrically connected with motor by three-phase electricity, it is characterized in that, also comprise fender guard; Described fender guard is arranged on the three-phase path between electric machine controller and motor;
Described fender guard comprises first order fender guard, detecting device and second stage fender guard;
Described first order fender guard comprises the first solid-state relay, the second solid-state relay and the 3rd solid-state relay; Three articles of paths that described first solid-state relay, the second solid-state relay and the 3rd solid-state relay are separately positioned on three-phase electricity are electrically connected with detecting device respectively;
Described first solid-state relay and the path of motor are provided with the first sampling point be electrically connected with detecting device; Described second solid-state relay and the path of motor are provided with the second sampling point be electrically connected with detecting device; Described 3rd solid-state relay and the path of motor are provided with the 3rd sampling point be electrically connected with detecting device;
Described second stage fender guard is circuit breaker; Described circuit breaker comprises the trip switch controlling circuit breaker energize or off-state; The secondary contact of described circuit breaker are electrically connected with detecting device;
Described trip switch, detecting device are connected with external entire car controller respectively;
Described detecting device detect the first sampling point, the second sampling point, the 3rd sampling point voltage and current Data Concurrent send testing result to entire car controller;
The testing result that described entire car controller receiving detection device sends.
2. the car load power system based on magneto-electric machine counter potential fender guard according to claim 1, it is characterized in that, described detecting device is communicated with entire car controller by CAN.
3. the car load power system based on magneto-electric machine counter potential fender guard according to claim 1, it is characterized in that, described detecting device comprises rectifying circuit, voltage sampling circuit, current sampling circuit and controller; Described rectifying circuit, voltage sampling circuit and current sampling circuit are electrically connected with controller respectively.
4. the car load power system based on magneto-electric machine counter potential fender guard according to claim 3, is characterized in that, described controller comprises first data transmission passage and the second data transmission channel; Described first data transmission passage is electrically connected with the mouth of voltage sampling circuit; Described second data transmission channel is electrically connected with the mouth of current sampling circuit.
5. the car load power system based on magneto-electric machine counter potential fender guard according to claim 4, is characterized in that, is provided with channel isolation between described first data transmission passage and the second data transmission channel.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510870001.6A CN105416088B (en) | 2015-12-02 | 2015-12-02 | A kind of vehicle dynamical system based on magneto back-emf protection device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510870001.6A CN105416088B (en) | 2015-12-02 | 2015-12-02 | A kind of vehicle dynamical system based on magneto back-emf protection device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN105416088A true CN105416088A (en) | 2016-03-23 |
| CN105416088B CN105416088B (en) | 2017-09-19 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201510870001.6A Active CN105416088B (en) | 2015-12-02 | 2015-12-02 | A kind of vehicle dynamical system based on magneto back-emf protection device |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111823868A (en) * | 2020-07-24 | 2020-10-27 | 中车永济电机有限公司 | Control method, electric transmission system and electric locomotive |
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| CN105416088B (en) | 2017-09-19 |
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Address after: 361000, No. 123, Cao Tong Road, industrial concentration area, Tongan District, Fujian, Xiamen Applicant after: XIAMEN FUGONG POWER TECHNOLOGY Co.,Ltd. Address before: 361000 Fujian Province, Xiamen city Tongan Industrial Zone Chi Ping Road No. 2890 Applicant before: XIAMEN FUGONG POWER TECHNOLOGY Co.,Ltd. |
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Denomination of invention: A vehicle power system based on permanent magnet motor back electromotive force protection device Granted publication date: 20170919 Pledgee: Agricultural Bank of China Limited Xiamen Lianqian Branch Pledgor: XIAMEN FUGONG POWER TECHNOLOGY Co.,Ltd. Registration number: Y2024980010237 |