CN104097586B - Vehicle control unit of electric vehicle - Google Patents
Vehicle control unit of electric vehicle Download PDFInfo
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- CN104097586B CN104097586B CN201310125670.1A CN201310125670A CN104097586B CN 104097586 B CN104097586 B CN 104097586B CN 201310125670 A CN201310125670 A CN 201310125670A CN 104097586 B CN104097586 B CN 104097586B
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Abstract
The present invention relates to Control of Electric Vehicles field, disclose a kind of vehicle control unit of electric vehicle, entire car controller is connected with safety governor by car load CAN; Entire car controller comprises: primary processor and from treater, primary processor with communicate to connect from treater by spi bus and pwm signal, monitor primary processor from treater; Primary processor and receive accelerator pedal signal, brake pedal signal, vehicle power signal and/or temperature sampling signal respectively from treater; Primary processor is provided with main CAN passage, is provided with from CAN passage, is provided with passage bridge switch from treater from treater, passage bridge switching over car load CAN and main CAN passage or from CAN expanding channels.When primary processor breaks down, switch car load CAN to from treater from treater, substitute primary processor work by from treater, by the setting of dual processor, improve the safe class of vehicle control unit of electric vehicle.
Description
Technical field
The present invention relates to Control of Electric Vehicles field, be specifically related to a kind of vehicle control unit of electric vehicle.
Background technology
Along with energy scarcity, environmental pollution day by day serious, the requirement of various countries to auto emission is more and more higher, and electronlmobil is more and more subject to national governments as the green traffic instrument that a kind of approximate zero is polluted and payes attention to.Entire car controller is as one of the core component of electronlmobil, and the quality of its performance is directly connected to electric vehicle industrialization process.Domestic a lot of colleges and universities, enterprise have also dropped into the design and development that a lot of manpower and material resources carry out vehicle control unit of electric vehicle, complete debugging or the limited-run trial production of function exemplar.But, often just from functional realiey consideration in the design of current domestic entire car controller, have ignored the functional safety design of entire car controller, adopt the hardware system scheme of uniprocessor, single power supply, do not carry out the functional safety analysis of system, should unappeasable demand for security to entire car controller system.
Entire car controller and other peripheral control units (as electric machine controller) carry out communication by CAN to be connected, CAN is the abbreviation of ControllerAreaNetwork, be a kind of high-speed LANs agreement that Germany " BOSCH company " designs, and finally become the serial communication protocol of ISO international standarkdization.Prior art is generally that all servicesubway of controller is all connected with peripheral control unit by a CAN, but a CAN easily breaks down, once et out of order, entirety cannot work by car load.
Summary of the invention
(1) technical matters that will solve
The object of this invention is to provide the entire car controller meeting electronlmobil safety requirements.
(2) technical scheme
In order to solve the problems of the technologies described above, the invention provides vehicle control unit of electric vehicle, described entire car controller is connected with safety governor by car load CAN; Described entire car controller comprises: primary processor and from treater, described primary processor with communicate to connect from treater by spi bus and pwm signal, describedly monitor primary processor from treater; Described primary processor and receive accelerator pedal signal, brake pedal signal, vehicle power signal and/or temperature sampling signal respectively from treater; Described primary processor is provided with main CAN passage, is describedly provided with from CAN passage from treater, is describedly provided with passage bridge switch from treater, described passage bridge switching over car load CAN and main CAN passage or from CAN expanding channels.
Preferably, described entire car controller also comprises primary processor power supply and from processor power supply, described primary processor power supply is that described primary processor is powered, and described is describedly to power from treater from processor power supply; Describedly be provided with source switch from treater, it is that primary processor is powered that source switch controls primary processor power supply.
Preferably, described primary processor is MPC5644 chip; Described from treater be MC9S08DZ60 chip.
Preferably, described primary processor power supply and comprise TLE8366ev50 power supply chip respectively from processor power supply.
Preferably, the analog output channel that described car load CAN comprises 2 tunnel 10 bit resolutions, total temperature scope relative error is 5%, load-carrying capacity is 20mA/ road; Described safety governor comprises electric machine controller and battery controller.
Preferably, the primary processor of described entire car controller is also provided with two primary processor CAN.
Preferably, described entire car controller is provided with 8 tunnel 12 bit resolutions, total temperature scope relative error is the analog input channel of 1%, for inputting described accelerator pedal signal, brake pedal signal, vehicle power signal and/or temperature sampling signal.
Preferably, the primary processor of described entire car controller is also provided with the On-off signal passage of 18 tunnels isolation, and for gathering key switch, driving switch, high pressure powers on, ABS is enable, the on-off signal of brake switch or cruise switch; 14 tunnels have that open circuit detects, the output switch parameter passage on short-circuit protection and power-handling capability 5A/ road; Two-way is isolated, have the 5V power supply delivery channel of open circuit detection and short-circuit protection, powers for giving Das Gaspedal and brake pedal.
Preferably, the primary processor of described entire car controller is also provided with 4 tunnel frequency/Puled input passages, for gathering the wheel speed signal of car load; 4 tunnels have dead zone protection, open circuit detects, the PWM delivery channel on short-circuit protection and power-handling capability 5A/ road, for driving abs valve during braking energy feedback.
Preferably, the CAN communication interface of described car load CAN, the first primary processor CAN and the second primary processor CAN comprises the topological structure of isolation, TVS pipe and common mode inhibition module.
(3) beneficial effect
Vehicle control unit of electric vehicle provided by the invention, have employed primary processor and monitor from treater two treaters the signal relating to car load work safety simultaneously, the signal of such as Das Gaspedal and brake pedal, in normal operating conditions, primary processor is connected with safety governor by car load CAN control bus, from the work of treater monitoring primary processor; When primary processor goes wrong, bear process from treater and relate to the function of car load security information, and switch car load CAN and be connected with from treater.By to the double monitoring of two primary processors relating to car load security information, improve the safety performance grade of car load.Only monitor the signal relating to car load safety from treater, signals all for car load is not monitored, give up redundant signals, effectively improve the work efficiency from treater.Primary processor and adopt independently power supply separately from treater, and treater is provided with source switch, when primary processor is entirely ineffective, controls source switch from treater and cut off the power supply of primary processor completely, thus reduce because power-fail causes the risk of thrashing.Further, the invention provides many CAN for being connected with peripheral control unit.The primary processor of this entire car controller is also provided with multi-path signal IO interface, solves the existing problem adopting that a CAN causes once this bus to go wrong jeopardizing car load safety in the art.
Accompanying drawing explanation
Fig. 1 is the johning knot composition of vehicle control unit of electric vehicle of the present invention and peripheral control unit;
In figure, 1: entire car controller; 2: safety governor.
Detailed description of the invention
Below in conjunction with drawings and Examples, the specific embodiment of the present invention is described in further detail.Following instance for illustration of the present invention, but is not used for limiting the scope of the invention.
As shown in Figure 1, vehicle control unit of electric vehicle of the present invention, entire car controller 1 is connected with safety governor 2 by car load CAN; Entire car controller 1 comprises: primary processor and from treater, primary processor with communicate to connect from treater by spi bus and pwm signal, monitor primary processor from treater; Primary processor and receive accelerator pedal signal, brake pedal signal, vehicle power signal and/or temperature sampling signal respectively from treater; Primary processor is provided with main CAN passage, is provided with from CAN passage from treater, is describedly provided with passage bridge switch from treater, and passage bridge switch is for switching car load CAN interface and main CAN passage or from CAN expanding channels.
Primary processor and simultaneously monitor the signal security-related with car load such as Das Gaspedal, brake pedal from treater, contrast verification is carried out by spi bus and pwm signal, when monitoring primary processor cisco unity malfunction from treater, from the Core Feature of treater adapter master processor processes car load security information, car load CAN is switched to from treater from CAN passage, utilize from treater control safety governor 2 work.Meanwhile, instrument shows corresponding alarm message, the current vehicle of prompting chaufeur is in faulty condition, like this can dual guarantee traffic safety.
Further, entire car controller 1 also comprises primary processor power supply and from processor power supply, primary processor power supply selects TLE8366ev50 power supply chip process power supply to be that primary processor is powered, and selects TLE8366ev50 power supply chip process power supply for power from treater from processor power supply; Be provided with source switch from treater, it is that primary processor is powered that source switch controls primary processor power supply.When monitoring primary processor from treater and can not working completely, from the Core Feature of treater not only adapter primary processor, also cut off the power supply of primary processor by source switch, make it thoroughly lose efficacy, thus reduce because power-fail causes the risk of thrashing.
Further, primary processor selects the MPC5644 chip meeting ASIL-D level of security; MC9S08DZ60 chip is selected from treater.
Further, entire car controller 1 is provided with 8 tunnel 12 bit resolutions, total temperature scope relative error is the analog input channel of 1%, the input channel that analog input channel is primary processor and shares from treater, for inputting accelerator pedal signal, brake pedal signal, vehicle power signal and/or temperature sampling signal respectively to primary processor with from treater.The analog output channel that car load CAN comprises 2 tunnel 10 bit resolutions, total temperature scope relative error is 5%, load-carrying capacity is 20mA/ road; Safety governor 2 comprises electric machine controller and battery controller.
Further, the primary processor of entire car controller 1 is also provided with the first primary processor CAN and the second primary processor CAN.Car load CAN, the first primary processor CAN and the second primary processor CAN comprise topological structure, several part such as TVS pipe and common mode inhibition module of isolation.The topological structure of isolation adopts DCP010505 chip to make insulating power supply, and magnetics carries out signal isolation.By this setting, CAN is made to have the function of shielding protection, short-circuit protection and common mode inhibition protection.
Further, the primary processor of entire car controller 1 is also provided with the On-off signal passage of 18 tunnels isolation, and for gathering key switch, driving switch, high pressure powers on, ABS is enable, the on-off signal of brake switch or cruise switch; 14 tunnels have that open circuit detects, the output switch parameter passage on short-circuit protection and power-handling capability 5A/ road, for driving cooling fan; Two-way is isolated, have the 5V power supply delivery channel of open circuit detection and short-circuit protection, powers for giving Das Gaspedal and brake pedal; 4 tunnel frequency/impulse singla input channels, for gathering the wheel speed signal of car load; 4 tunnels have dead zone protection, open circuit detects, the PWM delivery channel on short-circuit protection and power-handling capability 5A/ road, for driving abs valve during braking energy feedback.
Vehicle control unit of electric vehicle of the present invention has all kinds of (CAN communication, switch inputs, pulse/frequency, analog signal, PWM) input and output processing capacity, System self-test (controller built in self testing, outside self-inspection and arbitration), power-on and power-off management is (in low pressure, lower electric tube is managed, on high pressure, lower electric tube is managed), vehicle travels and controls (Driver intention recognition, gearing regime identification and management, driving mode, to cruise control, advance or reverse travel control), (feedback braking controls in car load energy management, energy management, moment of torsion is arbitrated), (Full Vehicle System is protected in car load safety management, insulation protection, earth leakage protective), Charge Management, trouble diagnosing and record, fault handling, the various functions such as CAN communication network management, meet electronlmobil demand for security.
The foregoing is only preferred embodiment of the present invention, not in order to limit the present invention, within the spirit and principles in the present invention all, any amendment done, equivalent replacement, improvement etc., all should be included within protection scope of the present invention.
Claims (10)
1. a vehicle control unit of electric vehicle, is characterized in that, described entire car controller is connected with safety governor by car load CAN; Described entire car controller comprises: primary processor and from treater, described primary processor with communicate to connect from treater by spi bus and pwm signal, describedly monitor primary processor from treater; Described primary processor and receive accelerator pedal signal, brake pedal signal, vehicle power signal and/or temperature sampling signal respectively from treater; Described primary processor is provided with main CAN passage, is describedly provided with from CAN passage from treater, is describedly provided with passage bridge switch from treater, described passage bridge switching over car load CAN and main CAN passage or from CAN expanding channels.
2. vehicle control unit of electric vehicle as claimed in claim 1, it is characterized in that, described entire car controller also comprises primary processor power supply and from processor power supply, described primary processor power supply is that described primary processor is powered, and described is describedly to power from treater from processor power supply; Describedly be provided with source switch from treater, it is that primary processor is powered that source switch controls primary processor power supply.
3. vehicle control unit of electric vehicle as claimed in claim 1 or 2, it is characterized in that, described primary processor is MPC5644 chip; Described from treater be MC9S08DZ60 chip.
4. vehicle control unit of electric vehicle as claimed in claim 1 or 2, is characterized in that, described primary processor power supply and comprise TLE8366ev50 power supply chip respectively from processor power supply.
5. vehicle control unit of electric vehicle as claimed in claim 1 or 2, is characterized in that, described car load CAN comprises 2 tunnel 10 bit resolutions, total temperature scope relative error is 5%, analog output channel that load-carrying capacity is 20mA/ road; Described safety governor comprises electric machine controller and battery controller.
6. vehicle control unit of electric vehicle as claimed in claim 1 or 2, it is characterized in that, the primary processor of described entire car controller is also provided with two primary processor CAN.
7. vehicle control unit of electric vehicle as claimed in claim 1 or 2, it is characterized in that, described entire car controller is provided with 8 tunnel 12 bit resolutions, total temperature scope relative error is the analog input channel of 1%, for inputting described accelerator pedal signal, brake pedal signal, vehicle power signal and/or temperature sampling signal.
8. vehicle control unit of electric vehicle as claimed in claim 1 or 2, it is characterized in that, the primary processor of described entire car controller is also provided with the On-off signal passage of 18 tunnels isolation, and for gathering key switch, driving switch, high pressure powers on, ABS is enable, the on-off signal of brake switch or cruise switch; 14 tunnels have that open circuit detects, the output switch parameter passage on short-circuit protection and power-handling capability 5A/ road; Two-way is isolated, have the 5V power supply delivery channel of open circuit detection and short-circuit protection, powers for giving Das Gaspedal and brake pedal.
9. vehicle control unit of electric vehicle as claimed in claim 1 or 2, it is characterized in that, the primary processor of described entire car controller is also provided with 4 tunnel frequency/Puled input passages, for gathering the wheel speed signal of car load; 4 tunnels have dead zone protection, open circuit detects, the PWM delivery channel on short-circuit protection and power-handling capability 5A/ road, for driving abs valve during braking energy feedback.
10. vehicle control unit of electric vehicle as claimed in claim 6, it is characterized in that, the CAN communication interface of described car load CAN, the first primary processor CAN and the second primary processor CAN comprises the topological structure of isolation, TVS pipe and common mode inhibition module.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201310125670.1A CN104097586B (en) | 2013-04-11 | 2013-04-11 | Vehicle control unit of electric vehicle |
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| CN201310125670.1A CN104097586B (en) | 2013-04-11 | 2013-04-11 | Vehicle control unit of electric vehicle |
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| CN104097586B true CN104097586B (en) | 2015-11-18 |
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| CN104724090B (en) * | 2015-01-23 | 2017-09-22 | 江苏理工学院 | Guarantee method and control system for preventing mistaken stepping on accelerator pedal during emergency braking of vehicle |
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| CN106708024A (en) * | 2017-01-26 | 2017-05-24 | 柳州延龙汽车有限公司 | Self detection method for whole-vehicle controller |
| CN107139778B (en) * | 2017-05-25 | 2019-04-26 | 天津恒天新能源汽车研究院有限公司 | A kind of vehicle control system of pure electric vehicle |
| CN108016385A (en) * | 2017-12-22 | 2018-05-11 | 江西博能上饶客车有限公司 | Electric automobile master controller |
| CN110371055B (en) * | 2018-04-12 | 2022-09-23 | 上海汽车集团股份有限公司 | Analysis method and device for automobile power supply signal |
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| CN110347081B (en) * | 2019-07-15 | 2021-03-16 | 天津英创汇智汽车技术有限公司 | Electronic control device for vehicle, and method for controlling vehicle running state |
| CN112428940A (en) * | 2019-08-26 | 2021-03-02 | 上海汽车集团股份有限公司 | Power supply equipment of vehicle control unit |
| CN111786598B (en) * | 2020-06-03 | 2022-11-18 | 华为数字能源技术有限公司 | Motor control device and motor control method |
| CN113147627A (en) * | 2021-04-19 | 2021-07-23 | 黄冈格罗夫氢能汽车有限公司 | System and method for acquiring rotating speed of hydrogen energy automobile by sensing unmanned position |
| CN117847200A (en) * | 2022-10-09 | 2024-04-09 | 华为技术有限公司 | A control system, a sensing system, a sensor, a controller and a terminal device |
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