CN203237240U - Controller for dry vacuum pump of battery electric vehicle - Google Patents
Controller for dry vacuum pump of battery electric vehicle Download PDFInfo
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- CN203237240U CN203237240U CN 201320239249 CN201320239249U CN203237240U CN 203237240 U CN203237240 U CN 203237240U CN 201320239249 CN201320239249 CN 201320239249 CN 201320239249 U CN201320239249 U CN 201320239249U CN 203237240 U CN203237240 U CN 203237240U
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Abstract
Provided is a controller for a dry vacuum pump of a battery electric vehicle. The controller for the dry vacuum pump of the battery electric vehicle mainly comprises a microcontroller, a sensor module, an intelligent switch, an opto-coupling relay, a CAN bus communication module and a power management module, wherein the power management module provides voltage values needed by a whole controller circuit, two input ports of the microcontroller serve as an input port of analog signals of a pressure sensor and an input port of analog signals of current respectively, the intelligent switch and the opto-coupling relay serve as a first-level executive device, the CAN bus communication module is connected with the microcontroller and a vehicle controller of the battery electric vehicle, and communication between the CAN bus communication module and the vehicle controller is achieved. The controller for the dry vacuum pump of the battery electric vehicle uses a single-chip microcomputer to collect and process information of the pressure of the dry vacuum pump and information of working current in a real-time mode to have control over the working state of the dry vacuum pump in a real-time mode, working and stopping of the dry vacuum pump, overcurrent early warning of the dry vacuum pump, low-vacuum working early warning of the dry vacuum pump and long-time working early warning of the dry vacuum pump, and is applicable to battery electric vehicles of various vehicle models.
Description
Technical field
The utility model belongs to the pure electric automobile field, relates to a kind of control and monitoring of dry vacuum pump of vacuum boosting braking system of pure electric automobile.
Background technology
Along with energy shock, environmental problem etc. becomes increasingly conspicuous, electronlmobil receives the whole nation and even global concern.There is extremely important effect in the braking of battery electric vehicle system in the Vehicle Driving Cycle process, digital electric vacuum assistance system is comprised of electric vacuum pump, vacuum reservoir and controller.Electric vacuum pump is exactly to scatter and disappear and the parts assembly that must increase for fear of the vacuum source of the vacuum boost system of brake system behind the cancellation driving engine.It is driven by electric energy, can be vacuum boost system reliable, enough vacuum sources are provided.The utility model is intended to realize the control to dry vacuum pump, Real-time Collection, processing vacuum pressure information, the mode of operation of control vacuum pump, thereby the control of realization vacuum boosting braking system are in time made corresponding countermeasure to occurring unusual particular case in the working process simultaneously.
Summary of the invention
The utility model is intended to realize the countermeasure the when control of mode of operation of pure electric automobile electric vacuum booster brake system and work are broken down, and realizes real-time control and the monitoring of vacuum boosting braking system for pure electric vehicle.
The utility model design has also been developed the dry vacuum pump controller, system realizes mainly that electric current and Working Status Monitoring, relay drive, abnormal failure is judged and is the function such as handle it to fault, for the pure electric automobile vehicle safe driving provides the actv. guarantee.
For achieving the above object, the technical solution adopted in the utility model is:
A kind of pure electric automobile dry vacuum pump controller mainly comprises microcontroller, sensor assembly, intelligent switch, light coupling relay, CAN bus communication module, power management module; Wherein said power management module provides magnitude of voltage required in the whole controller circuitry; Microcontroller is used for sampling, processes sensor information, and system is controlled and monitors, and its two A/D input port A, B are connected with sensor assembly, respectively as the input port of pressure sensor analog signal and current analog signal; Intelligent switch and light coupling relay are carried out the instruction of microcontroller as first order executive device, are connected respectively to two output ports of microcontroller; CAN bus communication module and microcontroller are connected entire car controller and are connected with vehicle, be used for realizing with entire car controller between communicate by letter.
The dry vacuum pump controller is to use 8 Freescale single-chip microcomputers as main control chip, information and the working current information of the pressure of Real-time Collection, processing vacuum pump, the real-time mode of operation of control vacuum pump, the work of control vacuum pump with stop, the early warning of vacuum pump excess current, the work early warning of vacuum pump low vacuum and vacuum pump work long hours early warning; Need simultaneously to realize avoiding vacuum pump not work for a long time in the vehicle operation process, occur owing to the vacuum reservoir leak tightness reduces the problem that causes degree of vacuum to reduce, and provide corresponding countermeasure.System utilizes the CAN bus to realize the communication of intermodule, for the fault of different brackets, reports respectively entire car controller or the fault by instrument panel lamp indication brake system; Port output by micro controller system drives intelligent switch and light coupling relay, realizes control and its mode of operation of Real Time Monitoring of vacuum pump, and this controller is applicable to the pure electric automobile of various vehicles.
The utility model can obtain following beneficial effect: the mode of operation that the information of each sensor by the Freescale single-chip microcomputer Real-time Collection can actv. control vacuum pump, Real-Time Monitoring brake system when work unusual, and provide corresponding relative strategy according to fault level; Monitor simultaneously the degree of vacuum of vacuum reservoir, guarantee because odjective cause provides corresponding strategy when causing low vacuum; CAN communication interface by micro controller system links to each other with the CAN bus driver, realizes the transmission of information; Processing when this adapts to the control of the safe and reliable realization vacuum pump mode of operation of New Energy and works abnormal, the mode of operation of tracking vacuum pump that can be real-time, actv. improves the driving safety of pure electric automobile.
Description of drawings
Fig. 1 is the utility model (linking to each other with entire car controller) circuit frame principle figure;
Fig. 2 is the schematic circuit diagram of microcontroller among Fig. 1;
Fig. 3 is the schematic circuit diagram of CAN bus communication module among Fig. 1.
The specific embodiment
, the utility model is described in further detail below in conjunction with the drawings and specific embodiments pure electric automobile dry vacuum pump controller's design purpose, feature and advantage for better.
As implementation, module and circuit all can use the device of existing Multiple Type in the utility model controller, can adopt Freescale MC9S08DZ60 as the MCU microcontroller such as microcontroller 1; Intelligent switch 3 can adopt the BTS443 switch; Light coupling relay 4 can adopt the AQY412EH relay; Power management module 6 can adopt the power circuit that mainly is comprised of chip LMC2675.But model and device that the module that the utility model uses and circuit are not limited to enumerate in the literary composition.
Structure of the present utility model is:
As shown in Figure 1, pure electric automobile dry vacuum pump controller mainly comprises microcontroller 1, sensor assembly 2, intelligent switch 3, light coupling relay 4, CAN bus communication module 5, power management module 6.Described power management module 6 provides magnitude of voltage required in the whole controller circuitry.Microcontroller 1 is used for sampling, processes sensor information, and system is controlled and monitors; Two A/D input port A, B of microcontroller 1 are connected with sensor assembly 2, respectively as the input port of pressure sensor analog signal and current analog signal.Intelligent switch 3 and light coupling relay 4 are carried out the instruction of microcontroller 1 as first order executive device, are connected respectively to two output ports of microcontroller 1.CAN bus communication module 5 and microcontroller 1 are connected entire car controller 7 and are connected with vehicle, be used for realizing with entire car controller 7 between communicate by letter.
This utility model keystone configuration has following characteristics:
1, microcontroller Real-time Collection pressure sensor information is processed through signal, judges the start and stop mode of operation of vacuum pump, determines that according to the degree of vacuum in the vacuum reservoir whether driving intelligent switch makes corresponding action, thereby realizes the control to the vacuum pump mode of operation.
2, by Real-time Collection, processing vacuum pump working current information, whether unusually to make a strategic decision whether drive light coupling relay according to current information, realize the unusual monitoring of working current.
3, the mode of operation for brake system carries out Real Time Monitoring.When the vacuum pump work, occur low vacuum work, working current unusual, when the fault such as working long hours, the menace level of failure judgement reports entire car controller and instrument by the CAN bus.
4, when the working current of vacuum pump causes system's fuse melting outside normal range of operation, faults itself can be reported entire car controller and instrument.
5, the degree of vacuum monitoring function that possesses long-time off position.Do not work for a long time at vehicle operation process intermediate pump, when causing degree of vacuum to reduce owing to the reduction of vacuum reservoir leak tightness, provide corresponding countermeasure.
6, utilize Freescale single-chip microcomputer as main control chip, system is by the communication of CAN bus realization intermodule, and hardware design structure is simple, dependable performance, and is safe in the course of the work.
Below in conjunction with Fig. 1-Fig. 3 control principle of the present utility model is explained:
Power management module 6 is realized the translation function of power supply, and this module mainly realizes providing required magnitude of voltage in the whole controller hardware circuit according to input voltage value; MCU microcontroller 1 as master controller mainly be receive and processes sensor module 2 in current information and pressure information, determine whether to drive light coupling relay 4 and intelligent switch 3 according to the information processing result simultaneously; Intelligent switch 3 and light coupling relay 4 are carried out the strategy output of microcontroller 1 as the first order executive device of control policy; Utilize the main failure messages that receive the vacuum pump that microcontrollers 1 send of CAN bus communication module 5, realize communicating by letter between the entire car controller 7 of pure electric automobile dry vacuum pump controller and exterior vehicle.
As shown in Figure 2, the utility model adopts 8 Freescale single-chip microcomputers as master control microcontroller 1, and its input port is that ADP4 is connected with sensor assembly 2 with ADP5, as the input port of pressure sensor analog signal and current analog signal; Be digital signal with analog signal conversion, as incoming signal and the operation irregularity judgment basis of controlled object.Its output port is that PTB0～PTB2 is connected with light coupling relay 4 with intelligent switch 3, carries out respectively corresponding control policy, realizes vacuum pump working state control and fault alarm.As shown in Figure 3, the CAN bus reception of micro controller system is connected with CAN bus communication module 5 interface circuits of design with transmit port, adopts the CAN2.0B agreement, 500kbps, standard frame sends CAN information, realizes communicating by letter between dry vacuum pump controller and the entire car controller, sends fault handling information.
Pure electric automobile dry vacuum pump controller is mainly realized the judgement of the mode of operation of dry vacuum pump in the brake system and operation irregularity and to unusual processing.Controller algorithm software realization flow is as follows:
1, the initialization of used each port of MCU microcontroller and functional module;
2, read the information of each sensor, process the information that collects in conjunction with the MCU microcontroller; According to the mode of operation of the information realization vacuum pump of processing and the judgement of fault.
If 3 degree of vacuum that detect satisfy the mode of operation of dry vacuum pump, then drive intelligent switch, thereby drive vacuum pump work, anyway as the same;
4, according to mode of operation, degree of vacuum and current value, judge whether work-hours, working vacuum district and working current be normal, if unusual, carry out respectively reporting fault to entire car controller and table according to grade, entire car controller provides the complete vehicle fault early warning;
Degree of vacuum when 5, the Real Time Monitoring brake system is not worked for a long time.When vacuum pump is not worked for a long time, when causing degree of vacuum to reduce owing to the reduction of vacuum reservoir leak tightness, provide corresponding countermeasure.
6, control is complete, returns the pick-up transducers data and accepts the CAN bus message, and circulation realizes control and the operation irregularity early warning of dry vacuum pump.
Claims (1)
1. a pure electric automobile dry vacuum pump controller is characterized in that: mainly comprise microcontroller (1), sensor assembly (2), intelligent switch (3), light coupling relay (4), CAN bus communication module (5), power management module (6); Wherein said power management module (6) provides magnitude of voltage required in the whole controller circuitry; Microcontroller (1) is used for sampling, processes sensor information, system is controlled and monitors, its two A/D input ports (A, B) are connected with sensor assembly (2), respectively as the input port of pressure sensor analog signal and current analog signal; Intelligent switch (3) and light coupling relay (4) are carried out the instruction of microcontroller (1) as first order executive device, are connected respectively to two output ports of microcontroller (1); CAN bus communication module (5) and microcontroller (1) are connected entire car controller (7) and are connected with vehicle, be used for realizing with entire car controller (7) between communicate by letter.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320239249 CN203237240U (en) | 2013-05-06 | 2013-05-06 | Controller for dry vacuum pump of battery electric vehicle |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320239249 CN203237240U (en) | 2013-05-06 | 2013-05-06 | Controller for dry vacuum pump of battery electric vehicle |
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| CN203237240U true CN203237240U (en) | 2013-10-16 |
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| CN 201320239249 Expired - Fee Related CN203237240U (en) | 2013-05-06 | 2013-05-06 | Controller for dry vacuum pump of battery electric vehicle |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105946835A (en) * | 2016-06-27 | 2016-09-21 | 成都雅骏新能源汽车科技股份有限公司 | Electric vacuum pump controller and control method applicable to pure electric vehicle |
| CN107554509A (en) * | 2017-08-25 | 2018-01-09 | 北京新能源汽车股份有限公司 | Safety control method and system of vacuum pump and new energy automobile |
| CN107933540A (en) * | 2017-12-22 | 2018-04-20 | 温州瓯云科技有限公司 | A kind of electronic type vacuum pressure controller |
-
2013
- 2013-05-06 CN CN 201320239249 patent/CN203237240U/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105946835A (en) * | 2016-06-27 | 2016-09-21 | 成都雅骏新能源汽车科技股份有限公司 | Electric vacuum pump controller and control method applicable to pure electric vehicle |
| CN107554509A (en) * | 2017-08-25 | 2018-01-09 | 北京新能源汽车股份有限公司 | Safety control method and system of vacuum pump and new energy automobile |
| CN107554509B (en) * | 2017-08-25 | 2019-11-22 | 北京新能源汽车股份有限公司 | Method of controlling security, system and the new-energy automobile of vacuum pump |
| CN107933540A (en) * | 2017-12-22 | 2018-04-20 | 温州瓯云科技有限公司 | A kind of electronic type vacuum pressure controller |
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Address after: 102606 Beijing City Economic Development Zone, Daxing District Caiyu mining and Road No. 1 Patentee after: BAIC BJEV Address before: 102606 Beijing City Economic Development Zone, Daxing District Caiyu mining and Road No. 1 Patentee before: Beijing Automobile New Energy Automobile Co.,Ltd. |
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Granted publication date: 20131016 Termination date: 20210506 |
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