CN201816466U - High-voltage safety control device for electric automobile - Google Patents
High-voltage safety control device for electric automobile Download PDFInfo
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- CN201816466U CN201816466U CN2010205452676U CN201020545267U CN201816466U CN 201816466 U CN201816466 U CN 201816466U CN 2010205452676 U CN2010205452676 U CN 2010205452676U CN 201020545267 U CN201020545267 U CN 201020545267U CN 201816466 U CN201816466 U CN 201816466U
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Abstract
The utility model relates to a high-voltage safety control device for an electric automobile, which comprises a casing and a circuit board. The circuit board is arranged in the casing and comprises a single chip microcomputer, a power module, an analog/digital (A/D) analog signal conditioning circuit, a controller area network (CAN) bus pretreatment circuit, a digital signal output processing circuit and a digital signal input processing unit, and the signal chip microcomputer is respectively connected with the power module, the A/D analog signal conditioning circuit, the CAN bus pretreatment circuit, the digital output processing circuit and the digital input processing circuit. Compared with the prior art, the high-voltage safety control device for an electric automobile has the advantages of compact structure, small volume, light weight, complete and reliable functions, high engineering degree and the like.
Description
Technical field
The utility model relates to a kind of automobile controller, especially relates to a kind of electronlmobil high-voltage safety control setup.
Background technology
The aggravation of energy shock and environmental pollution makes electric vehicle engineering cause the great attention of many developed countries again before and after nineteen ninety, and China begins also to have carried out the research of electronlmobil gordian technique from the ninth five-year plan.Electronlmobil is meant all or part of with the automobile of electric energy driving motor as power system, thereby reaches the purpose of energy-saving and emission-reduction.Drive the electric power of electronlmobil common various storage batterys, fuel cell, solar cell etc. are arranged.Common sorting technique is that electronlmobil is divided into pure electric automobile, fuel cell powered vehicle and mixed power electric car.
The power piezoelectric voltage of electronlmobil can be up to more than the 300V, and the rational safety method of design safety is a key of guaranteeing driver and crew and vehicle arrangement safe operation.The International Standardization Organization and the U.S., Europe, Japan etc. have all successively set up standardization body and the mechanism that carries out the elec. vehicle research on standard and the work of formulation, issued the technical standard of some elec. vehicles in succession, comparatively strict standard and requirement formulated in high-voltage safety and control to elec. vehicle, and stipulated that high-pressure system must possess the high-tension current automatic disconnecting device.Domestic and international for this reason many units have carried out the research of electronlmobil high-voltage safety control system; can realize functions such as switching on and off of high-tension current; but most system exists cost height, insufficiency face; structure is not compact, volume and weight is big; the shortcoming that reliability and through engineering approaches are not high; can not realize safety guard-safeguard by actv., installing to the car load coupling simultaneously makes troubles.
Summary of the invention
The purpose of this utility model be exactly provide a kind of integrated level height in order to overcome the defective that above-mentioned prior art exists, the compact conformation volume is little, in light weight, complete function reliable and the high electronlmobil high-voltage safety control setup of through engineering approaches degree.
The purpose of this utility model can be achieved through the following technical solutions:
A kind of electronlmobil high-voltage safety control setup, it is characterized in that, comprise housing, circuit card, described circuit card is located in the housing, described circuit card comprises micro controller system, power module, A/D analog signal conditioner circuit, CAN bus pre-process circuit, digital output processing circuit, digital input processing circuit, and described micro controller system is connected with power module, A/D analog signal conditioner circuit, CAN bus pre-process circuit, digital output processing circuit, digital input processing circuit respectively.
Described power module input end is connected with the 24V storage battery, and mouth is connected with CAN bus, micro controller system, sensor respectively.
Described A/D analog signal conditioner circuit comprises spike and clutter processing module, filtering and anti-shake processing module, voltage division processing module, described spike is connected with anti-shake processing module, voltage division processing module successively with clutter processing module, filtering, described A/D analog signal conditioner circuit is gathered high tension battery input voltage signal and motor input voltage signal, HVIL detectable voltage signals, and the ATD interface of these signals by micro controller system is input in the micro controller system.
Described CAN bus pre-process circuit comprises CAN transmission circuit, photoelectric isolating circuit, battery filter circuit, and described CAN transmission circuit, photoelectric isolating circuit, battery filter circuit connect successively.
The input end of described digital output processing circuit is connected with micro controller system by the PORT interface, and mouth is connected with power positive end high-voltage relay, power supply negative terminal high-voltage relay, pre-charge-relay, condition line, fault-indicating lamp respectively.
Described digital input processing circuit collection high pressure wake-up signal, high pressure command signal, power positive end high-voltage relay detection signal, power supply negative terminal high-voltage relay detection signal, precharge detection signal, HVIL detect control signal, and these signals are input in the micro controller system by micro controller system PORT interface.
Compared with prior art, the utlity model has following advantage:
1, design-calculated high-voltage safety controller function is comprehensive, integrated level is high.Based on CAN bus and line traffic control technology, be core with intelligent double-core micro controller system, realized the high-voltage safety control of electronlmobil by the rich functions module.This controller and entire car controller carry out information and instruction interaction control by the CAN bus, also can carry out information interaction control by condition line and entire car controller;
But the pre-charge state of the electric state of 2 real-time dynamic monitoring high voltage circuits, on off mode and high voltage circuit guarantees the safe and reliable transmission of Full Vehicle System dynamic power;
3, the insulation fault of the whole high-pressure system of detection of dynamic, open circuit fault, earth fault and high-pressure-loop fault etc. at any time, after the situation of noting abnormalities, can export faulty condition and make corresponding action by CAN bus or condition line immediately, the output of cut off high electricity automatically under the situation of danger.Export diagnostic result and high-pressure system status information, response process and the implementation status of analyzing voluntarily by the CAN bus simultaneously;
4, control switching on and off of high-voltage relay by metal-oxide-semiconductor, when connecting high-pressure system, at first carry out pre-charge process, and the execution result of output pre-charge process; Disconnecting high-pressure system is to guarantee to disconnect control response time＜20ms, has the manual function that disconnects the high-pressure system contactless switch simultaneously, guarantees personal safety;
5, the CAN bus adopts photoelectricity to isolate and the em filtering circuit layout, but terminal resistance software mates simultaneously, and antijamming capability is strong, coupling alerting ability height.Realization is based on CCP, J1939 and reliable and stable demarcation, communication and diagnosis and the car load EOL function of ISO15765.
6, power circuit has that short circuit stops automatically and recovery, selfdiagnosis defencive function, and the power adaptation broadness can be in normal operation under 9～36VDC; Simultaneously strong according to hybrid power electromagnetic interference characteristics have been carried out special EMC technical design, make the total system good reliability, working stability.
7, controller architecture compactness, volume are little, in light weight; Adopt fire-resistant engineering plastics, improve the insulation characterisitic of controller, simultaneously cost-cutting.
8, controller is mainly by forming with lower member: promptly upper cover plate, lower cover, connector, special bolt are formed, and wherein connector is connected on the upper cover plate 1 by special bolt; Upper cover plate is connected by four regular bolts with lower cover, installs simple, convenient.
9, when upper cover plate designs, consider the firm and installation direction of installation, adopted the mistake proofing design, designed two mounting holes, designed a mounting hole in an other side in controller one side; Mounting hole adopts and embeds copper sheathing assurance installation reliably.
10, when upper cover plate designs, also adopt custom-designed all-sealed structure, can guarantee not control of access device inside such as exterior oil, water like this.
11, upper cover plate when design be in order to strengthen the intensity of cover plate, indoor design special reinforcing rib structure, guarantee the good shock resistance and the crushing resistance of controller.
12, carry out the through engineering approaches and the reliability Optimum Design of upper cover plate,, improved the intensity and its aesthetic appearance of controller in the multilayered structure that each faying face transition position adopts circular arc and inclined-plane to combine.
Description of drawings
Fig. 1 is a hybrid power high-tension line scheme drawing of the present utility model;
Fig. 2 is a board structure of circuit scheme drawing of the present utility model;
Fig. 3 is the structural representation of A/D analog signal conditioner circuit of the present utility model.
The specific embodiment
Below in conjunction with the drawings and specific embodiments the utility model is elaborated.
Embodiment
Based on CAN bus and line traffic control technology, according to the work characteristics of electronlmobil, adopt modular design method, designed high-voltage safety controller of the present utility model.This controller and entire car controller carry out information and instruction interaction control by CAN bus or condition line, can monitor the connection process of electric state, on off mode and the high voltage circuit of high voltage circuit in real time, guarantee the safe and reliable transmission of Full Vehicle System dynamic power; And detect insulation fault, open circuit fault, earth fault and the high-pressure-loop fault etc. of whole high-pressure system at any time, after the situation of noting abnormalities, can export faulty condition and make corresponding action by CAN bus or condition line immediately, the output of cut off high electricity automatically under the situation of danger.Export diagnostic result and high-pressure system status information, response process and the implementation status of analyzing voluntarily by the CAN bus simultaneously.
As shown in Figure 2, a kind of electronlmobil high-voltage safety control setup, comprise housing, circuit card, described circuit card is located in the housing, described circuit card comprises micro controller system 1, power module 2, A/D analog signal conditioner circuit 3, CAN bus pre-process circuit 4, digital output processing circuit 5, digital input processing circuit 6, and described micro controller system 1 is connected with power module 2, A/D analog signal conditioner circuit 3, CAN bus pre-process circuit 4, digital output processing circuit 5, digital input processing circuit 6 respectively.
Described power module 2 input ends are connected with the 24V storage battery, and mouth is connected with CAN bus, micro controller system, sensor respectively.Power module is responsible for the power supply of circuit card total system, has anti-short circuit and stops automatically and restore funcitons.This module is handled car load 24V power supply, forms working powers such as micro controller system 1, CAN bus, sensor, amplifier reference power supply in the high-voltage safety controller.
As shown in Figure 3, described A/D analog signal conditioner circuit 3 comprises spike and clutter processing module, filtering and anti-shake processing module, voltage division processing module, described spike is connected with anti-shake processing module, voltage division processing module successively with clutter processing module, filtering, described A/D analog signal conditioner circuit 3 is gathered high tension battery input voltage signals and motor input voltage signal, HVIL detectable voltage signals, and the ATD interface of these signals by micro controller system is input in the micro controller system.Electric powered motor voltage is generally up to 300V～450V, for avoiding high pressure and big electric current to enter the high-voltage relay circuit card components and parts are impacted, the resistance that seals in 4M is shunted it, and it is carried out dividing potential drop according to the input characteristic of amplifier coupling proper resistor, the electric current that enters amplifier so only has hundreds of microamperes, dividing potential drop coupling back amplifier output voltage is shown in formula: Vout1=BATV* (40k/ (4M+40K)), wherein Vout1 is the amplifier output terminal voltage, BATV is a power accumulator voltage, directly send into the A/D mouth of CPU after the Vout1 process RC filtering, handle and reduce by bottom software.
Described CAN bus pre-process circuit 4 comprises CAN transmission circuit, photoelectric isolating circuit, battery filter circuit, and described CAN transmission circuit, photoelectric isolating circuit, battery filter circuit connect successively.The CAN interface of 4 pairs of micro controller systems of described CAN bus pre-process circuit carries out obstacle overcome ability to be handled, adopt and isolate the 5V power supply, be responsible for the information Control that CAN communicates by letter by CAN process chip 82C250 with TLE6250, by optocoupler carry out and CPU between isolation, and strengthen the stability of CAN information output by filter circuit etc.But CAN bus termination resistance software arrangements.Realization is based on CCP, J1939 and reliable and stable program burn writing, demarcation, communication and diagnosis and the car load EOL function of ISO15765.
The input end of described digital output processing circuit 5 is connected with micro controller system by the PORT interface, and mouth is connected with power positive end high-voltage relay, power supply negative terminal high-voltage relay, pre-charge-relay, condition line, fault-indicating lamp respectively.In the normal high pressure connection process, for avoiding moment to connect high pressure motor electric capacity and inverter are impacted, at first need to carry out the precharge process of high-tension line, as shown in fig. 1, connect pre-charge-relay C2 and negative terminal high-voltage relay C3, give the charging of motor M electric capacity with the little electric current in the precharge loop, in case reaching circuit, charging connects requirement (general control capacitance voltage surpasses 90% battery tension), disconnect pre-charge-relay C2, connect anode high-voltage relay C1, connect high tension loop, wherein R is a pre-charge resistance.
Precharge of the present utility model, high pressure switch on and off control to be undertaken by condition line master mode and CAN order master mode, all adopt high pressure wake command and two signals of high pressure order to judge instruction under these two kinds of patterns from entire car controller, the source of different is signal under two kinds of patterns is different, and signal comes from the 24V on-off signal of controller pin under the condition line master mode; Signal comes from the CAN network under the CAN command mode.Pass through the break-make of the metal-oxide-semiconductor control relay coil of internal circuit then, thereby reach the connecting and disconnecting in control high tension loop and precharge loop.The control signal of metal-oxide-semiconductor comes from I/O mouth PA6, PA0 and the PA3 of CPU, the resistance that seals in 2k is in order to prevent that electric current is excessive CPU to be caused reverse impact, wherein PA6 is by driving the switching of amplifying circuit control pre-charge-relay, PA0 is by driving the switching of amplifying circuit control anode high-voltage relay, PA3 is by driving the switching of amplifying circuit control negative terminal high-voltage relay, and relay on-off action and time are by system software controls.In order to keep the stability of metal-oxide-semiconductor mode of operation, we have increased the pull down resistor of 100k.Reverse voltage when turn-offing in order to place relay impacts, and we have increased flywheel diode and have absorbed its reverse high voltage transient at the coil two ends.High pressure disconnects and comprises that instruction disconnects and fault disconnects two kinds of patterns.Condition line control mainly be for the CAN network during malfunctioning or debugging by analog level signal control high-pressure modular normal operation, wake high pressure control order with the transmission of high pressure order analog signal replaced C AN network up by introducing high pressure that entire car controller sends.Simultaneously, the high pressure conditions that the high-voltage safety controller itself collects is returned to entire car controller, to carry out information interaction and control with entire car controller by OA, OB, OC.The open circuited operating time of high pressure is all less than 20ms, to guarantee car load and personnel's life safety under any pattern.
Described digital input processing circuit collection high pressure wake-up signal, high pressure command signal, power positive end high-voltage relay detection signal, power supply negative terminal high-voltage relay detection signal, precharge detection signal, HVIL detect control signal, and these signals are input in the micro controller system by micro controller system PORT interface.By these earth fault, insulation fault, loop fault, relay coil fault, precharge fault, high voltage fault, low voltage failure etc. are detected and diagnosis, and detect states such as precharge, high pressure combination, high pressure disconnection.Whether earth fault mainly is to detect power ground to have loosening or the disconnection phenomenon, detects by the analog level of introducing ground wire, judges whether to exist earth fault; Insulation fault mainly is to judge that high tension loop anode or negative terminal have or not leaky over the ground, by detecting storage battery anode voltage to ground and negative terminal voltage to ground value, the Input Software model judges whether the value of B+ and negative pole is within the normal range, thereby judges whether to exist leaky.Loop fault mainly is whether the connection of the various connectors of detection is good, circuit by special use is with all high pressure attaching partss formation loop that is serially connected, send the constant current supply of an approximate 100mA by the reference power supply of high-voltage safety controller, send into the A/D mouth of CPU after the filtering.Judge just by returning level whether the connector loop exists disconnection or loosening phenomenon.By specific resistance the control end level signal of relay coil is introduced CPU and detect, can judge this moment, whether relay power connected correctly, the while can be detected whether conducting of relay.
The utility model has carried out special EMC technical design, take all factors into consideration from aspects such as circuit theory design, the system integration, components and parts screening and coupling, PCB design and fabrication, system's heat interference designs, adopt tradition to suppress the technology disturbed and simply and cleverly " avoid and dredge " technical finesse, above each circuit module height is integrated on the multi-layer PCB board, compact conformation, under the electronlmobil electromagnetic field environment of complexity, antijamming capability is strong, and is stable and reliable for performance.
Controller and housing assembly mainly contains compositions such as connector, upper cover plate, lower cover.Connector is connected with internal circuit board and passes through on the screw retention upper cover plate; Design has special hermetically-sealed construction between upper cover plate and the lower cover.Consider during the design of controller upper cover plate and install firmly and installation direction, adopted the mistake proofing design, designed two mounting holes, designed a mounting hole in an other side in controller one side.Mounting hole adopts and embeds copper sheathing assurance installation reliably.
Characteristics according to connector have designed special-purpose sealing band and structure at upper cover plate, guarantee the waterproof and dustproof performance.In order to satisfy the vibration requirement of running car, the welding and the technique for fixing of components and parts etc. carried out special processing.
The entire controller housing adopts special flame retardant plastics, has intensity height, lightweight advantage.
Claims (5)
1. electronlmobil high-voltage safety control setup, it is characterized in that, comprise housing, circuit card, described circuit card is located in the housing, described circuit card comprises micro controller system, power module, A/D analog signal conditioner circuit, CAN bus pre-process circuit, digital output processing circuit, digital input processing circuit, and described micro controller system is connected with power module, A/D analog signal conditioner circuit, CAN bus pre-process circuit, digital output processing circuit, digital input processing circuit respectively.
2. a kind of electronlmobil high-voltage safety control setup according to claim 1 is characterized in that described power module input end is connected with the 24V storage battery, and mouth is connected with CAN bus, micro controller system, sensor respectively.
3. a kind of electronlmobil high-voltage safety control setup according to claim 1, it is characterized in that, described A/D analog signal conditioner circuit comprises spike and clutter processing module, filtering and anti-shake processing module, voltage division processing module, and described spike is connected with anti-shake processing module, voltage division processing module successively with clutter processing module, filtering.
4. a kind of electronlmobil high-voltage safety control setup according to claim 1, it is characterized in that, described CAN bus pre-process circuit comprises CAN transmission circuit, photoelectric isolating circuit, battery filter circuit, and described CAN transmission circuit, photoelectric isolating circuit, battery filter circuit connect successively.
5. a kind of electronlmobil high-voltage safety control setup according to claim 1, it is characterized in that, the input end of described digital output processing circuit is connected with micro controller system by the PORT interface, and mouth is connected with power positive end high-voltage relay, power supply negative terminal high-voltage relay, pre-charge-relay, condition line, fault-indicating lamp respectively.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010205452676U CN201816466U (en) | 2010-09-28 | 2010-09-28 | High-voltage safety control device for electric automobile |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010205452676U CN201816466U (en) | 2010-09-28 | 2010-09-28 | High-voltage safety control device for electric automobile |
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| CN201816466U true CN201816466U (en) | 2011-05-04 |
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| CN2010205452676U Expired - Fee Related CN201816466U (en) | 2010-09-28 | 2010-09-28 | High-voltage safety control device for electric automobile |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102419573A (en) * | 2010-09-28 | 2012-04-18 | 上海海能汽车电子有限公司 | High-voltage safety controller for electric vehicles |
| CN102501771A (en) * | 2011-11-09 | 2012-06-20 | 苏州海格新能源汽车电控系统科技有限公司 | Control method for high voltage electricity safety protection of passenger vehicle |
| CN102751711A (en) * | 2012-05-29 | 2012-10-24 | 浙江吉利汽车研究院有限公司杭州分公司 | Motor controller discharging safety device for hybrid electric vehicle |
| CN104252169A (en) * | 2013-06-28 | 2014-12-31 | 大陆汽车投资（上海）有限公司 | Device for safety detection of vehicle motor controller |
| CN106274496A (en) * | 2016-10-09 | 2017-01-04 | 东莞钜威动力技术有限公司 | A kind of electric automobile actuator control system |
-
2010
- 2010-09-28 CN CN2010205452676U patent/CN201816466U/en not_active Expired - Fee Related
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102419573A (en) * | 2010-09-28 | 2012-04-18 | 上海海能汽车电子有限公司 | High-voltage safety controller for electric vehicles |
| CN102419573B (en) * | 2010-09-28 | 2014-03-12 | 上海海能汽车电子有限公司 | High-voltage safety controller for electric vehicles |
| CN102501771A (en) * | 2011-11-09 | 2012-06-20 | 苏州海格新能源汽车电控系统科技有限公司 | Control method for high voltage electricity safety protection of passenger vehicle |
| CN102751711A (en) * | 2012-05-29 | 2012-10-24 | 浙江吉利汽车研究院有限公司杭州分公司 | Motor controller discharging safety device for hybrid electric vehicle |
| CN104252169A (en) * | 2013-06-28 | 2014-12-31 | 大陆汽车投资（上海）有限公司 | Device for safety detection of vehicle motor controller |
| CN106274496A (en) * | 2016-10-09 | 2017-01-04 | 东莞钜威动力技术有限公司 | A kind of electric automobile actuator control system |
| CN106274496B (en) * | 2016-10-09 | 2019-03-26 | 东莞钜威动力技术有限公司 | A kind of electric car actuator control system |
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Legal Events
| Date | Code | Title | Description |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20110504 Termination date: 20150928 |
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| EXPY | Termination of patent right or utility model |