CN212585989U - Electric automobile energy detection and analysis system - Google Patents
Electric automobile energy detection and analysis system Download PDFInfo
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- CN212585989U CN212585989U CN202021627825.3U CN202021627825U CN212585989U CN 212585989 U CN212585989 U CN 212585989U CN 202021627825 U CN202021627825 U CN 202021627825U CN 212585989 U CN212585989 U CN 212585989U
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Abstract
The utility model discloses an electric automobile energy detection and analysis system, which comprises a high-speed data acquisition controller, an energy flow analysis upper computer, a plurality of energy flow detection sensors, a plurality of displacement sensors, a plurality of temperature acquisition modules and a chassis dynamometer controller; the energy flow analysis upper computer, the energy flow detection sensor, the displacement sensor, the temperature acquisition module and the chassis dynamometer controller are respectively connected with the high-speed data acquisition controller; the high-speed data acquisition controller still through OBDII bus communication controller with electric automobile's OBD interface links to each other, acquires electric automobile's battery management system BMS data. The utility model discloses can accurately carry out the electric automobile energy detection of multiplex condition, multipurpose in real time, provide quantifiable reference basis for the optimization of electric automobile energy control strategy.
Description
Technical Field
The utility model relates to an electric automobile tests technical field, especially relates to an electric automobile energy detection and analytic system.
Background
The country encourages and vigorously develops the electric automobile, and the driving range is an important factor restricting the popularization and the application of the electric automobile. In the research and development test process of the electric vehicle, electrical parameters (battery pack main loop electric energy, motor drive loop electric energy, air conditioner AC loop electric energy, vehicle low-voltage electrical appliance loop electric energy, battery BMS system parameters) and vehicle operation parameters (vehicle speed, acceleration, accelerator pedal stroke, brake pedal stroke, vehicle interior and exterior environment parameters) of the electric vehicle under various operation conditions are accurately collected and used for analyzing the relation between the energy consumption condition and the driving operation strategy of the electric vehicle under various operation conditions, so that the control strategy of the electric vehicle is optimized, the abnormal energy consumption condition is analyzed in a targeted manner, the electrical and control strategies of each energy consumption component are optimized, unnecessary energy consumption is reduced, the effective energy utilization rate of the electric vehicle is improved, and the driving mileage of the electric vehicle is further improved.
At present, no complete scheme is provided for a whole vehicle energy flow detection and analysis system, and a vehicle research and development unit and an engineer are used to collect the energy of a main circuit and a branch circuit of an electric vehicle by using a traditional power analyzer at present and collect data for analysis. However, the following disadvantages exist in the energy consumption analysis of the electric vehicle by collecting energy of the electric vehicle through the conventional power analyzer:
1) the test connection is very inconvenient and high in danger;
2) the vehicle needs to be broken, is inconvenient to move, cannot be subjected to a road test, and is expensive.
3) The data fusion is poor, the data collected by the power analyzer can only be independently stored in the power analyzer, the data can be exported and analyzed after the test is finished, and the data cannot be fused with the vehicle operation parameters in real time, so that the high-order energy flow analysis based on the driving behaviors cannot be performed, and the data cannot be effectively used for optimizing the control strategy of the vehicle.
SUMMERY OF THE UTILITY MODEL
The utility model aims at providing an electric automobile energy detects and analytic system to solve the technical problem that exists among the prior art, can accurately carry out the electric automobile energy detection of multiplex condition, multipurpose in real time, provide quantifiable reference for the optimization of electric automobile energy control strategy.
In order to achieve the above object, the utility model provides a following scheme: the utility model provides an electric automobile energy detection and analysis system, which comprises a high-speed data acquisition controller, an energy flow analysis upper computer, a plurality of energy flow detection sensors, a plurality of displacement sensors, a plurality of temperature acquisition modules and a chassis dynamometer controller; the energy flow analysis upper computer, the energy flow detection sensor, the displacement sensor, the temperature acquisition module and the chassis dynamometer controller are respectively connected with the high-speed data acquisition controller; the high-speed data acquisition controller still through OBDII bus communication controller with electric automobile's OBD interface links to each other, acquires electric automobile's battery management system BMS data.
Preferably, the high-speed data acquisition controller adopts a synchronization mechanism to synchronize the acquisition time domain of each channel data; and the high-speed data acquisition controller is used for synchronously acquiring data of each channel according to a preset frequency, wherein the preset frequency is more than 50 HZ.
Preferably, the high-speed data acquisition controller packs the acquired data according to a time sequence and transmits the packed data to the energy flow analysis upper computer.
Preferably, the energy flow detection sensor is connected in series in an energy transmission loop of the electric vehicle through a plug, and acquires real-time data parameters on the energy transmission loop of the electric vehicle, wherein the real-time data parameters include current, voltage and power.
Preferably, the OBDII bus communication controller is connected with an OBD port of the electric automobile through a plug, and BMS data, speed and acceleration operation parameters of the electric automobile are acquired.
Preferably, the displacement sensor comprises a speed pedal displacement sensor and a brake pedal displacement sensor, and is used for acquiring the speed of the electric vehicle and the travel of the brake pedal.
Preferably, the displacement sensor is mounted in front of an instrument panel of the electric automobile through a tooling clamp; the displacement sensor also comprises a pull wire end which is connected to an acceleration pedal and a brake pedal of the electric automobile; the displacement sensor converts the displacement of the acceleration pedal and the brake pedal of the electric automobile into 0-10V electric signals, and the electric signals are transmitted to the high-speed data acquisition controller through an analog acquisition port.
Preferably, the high-speed data acquisition controller is connected with the chassis dynamometer controller through a chassis dynamometer communication port and is used for acquiring the wheel-side output power, speed and acceleration signals of the electric automobile in the running process of the automobile.
Preferably, the temperature acquisition module comprises an external environment temperature acquisition module and an internal environment temperature acquisition module, and the external environment temperature acquisition module and the internal environment temperature acquisition module are respectively used for acquiring the environment and the temperature of the internal measurement point of the electric automobile.
Preferably, the high-speed data acquisition controller synchronizes the acquisition time domain of each channel data by using a synchronization mechanism of a DC mode in EtherCAT.
The utility model discloses a following technological effect:
(1) the utility model discloses an energy flow detects the electric energy flow parameter in each electric energy return circuit of sensor comprehensive and accurate collection electric automobile operation in-process to through displacement sensor, temperature acquisition module, the chassis dynamometer machine gathers operating mode parameters such as wheel limit output net power, speed acceleration, footboard displacement, temperature parameter among the electric automobile operation, effectively fuse multisource data, can accurately analyze energy flow and overall efficiency under the various operating modes among the electric automobile operation in real time, provide quantifiable reference basis for the optimization of electric automobile energy control strategy;
(2) the utility model is convenient to use, does not damage the original wire harness of the vehicle, and breaks the limitation of the original power analyzer test;
(3) the utility model integrates the collected multi-channel data through the high-speed data collection controller, and adopts a synchronization mechanism to synchronize the collection time domain of each channel data, the integration level of data collection is high, and the real-time performance is good; meanwhile, the acquisition module used by the high-speed data acquisition controller has high acquisition precision, achieves the sampling precision of 24 bits, effectively ensures the accuracy of data, and provides point-to-point data support for the analysis of the energy control strategy of the electric vehicle;
(4) the utility model has powerful functions, and the energy consumption analysis test under the standard driving curve, the electric vehicle driving range test based on the national standard, the accelerated working condition electric vehicle energy flow test, and the electric vehicle energy recovery and control strategy test of the reducer braking multi-working condition can be carried out by the electric vehicle energy detection system; according to the utility model discloses electric automobile energy detection system can customize the test case of various different test schemes, accomplishes various different test functions;
(5) the utility model discloses with low costs, the expansibility is good, can freely expand corresponding data acquisition channel through the industrial bus, accomplishes different test requirements.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required to be used in the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without inventive labor.
Fig. 1 is the structural schematic diagram of the energy detection and analysis system of the electric vehicle.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.
In order to make the above objects, features and advantages of the present invention more comprehensible, the present invention is described in detail with reference to the accompanying drawings and the detailed description.
Referring to fig. 1, the embodiment provides an energy detection and analysis system for an electric vehicle, which includes a high-speed data acquisition controller, an energy flow analysis upper computer, a plurality of energy flow detection sensors, a plurality of displacement sensors, a plurality of temperature acquisition modules, and a chassis dynamometer controller; the energy flow analysis upper computer, the energy flow detection sensor, the displacement sensor, the temperature acquisition module and the chassis dynamometer controller are respectively connected with the high-speed data acquisition controller; the high-speed data acquisition controller is also connected with an OBD interface of the electric automobile through an OBDII bus communication controller to acquire BMS (Battery Management System) data of the electric automobile.
Further, according to the optimized scheme, the high-speed data acquisition controller adopts a synchronization mechanism of a DC mode in EtherCAT to synchronize the acquisition time domain of each channel data, namely SYNC0 event synchronization, and before the next SYNC0 interruption occurs, the process data frame must be completely received by the slave station. The Calc and Copy Time comprises the minimum Time difference between the data frame receiving and the SYNC0 event, and ensures that the sampling Time difference of each channel is not more than 1 millisecond; and the high-speed data acquisition controller is used for synchronously acquiring data of each channel according to a preset frequency, wherein the preset frequency is more than 50 HZ.
And further optimizing the scheme, the high-speed data acquisition controller packs the acquired data according to the time sequence and then transmits the packed data to the energy flow analysis upper computer.
Further optimizing the scheme, the energy flow analysis upper computer adopts a notebook computer, and the notebook computer contains a set of energy flow analysis software; the energy flow analysis upper computer is connected with the high-speed data acquisition controller through a network cable and transmits data based on a TCP/IP protocol; and receiving the data packet uploaded by the high-speed data acquisition controller in real time, and rapidly analyzing, analyzing and storing the received data packet.
The energy flow detection sensor is connected in series in an energy transmission loop of the electric automobile through a quick plug-in connector, the energy flow detection sensor comprises a current and voltage detection circuit and a data processing secondary instrument, and real-time data parameters including current, voltage and power on the energy transmission loop are transmitted to the high-speed data acquisition controller through a CAN communication bus; the energy transmission loop comprises an energy transmission loop consisting of a power distribution unit of the electric automobile, a power motor driver, a battery pack, a direct current power supply system and an automobile air conditioner; wherein the electric motor driver is connected with a motor of the electric automobile. The energy flow detection sensor is used for adapting to a customized wiring harness plug-in mode of the electric automobile, a connector which can be matched with an electric plug-in terminal of the electric automobile is customized according to wiring harness material information of the electric automobile, the energy flow detection sensor is packaged in a metal box, the customized connector is connected, and the customized connector is directly connected in series between original wiring harnesses of the electric automobile.
Further optimize the scheme, OBDII bus communication controller pass through the OBD plug connector with electric automobile's OBD port is connected, acquires electric automobile's BMS data and speed of a motor vehicle, acceleration operating parameter back, transmit through CAN communication bus to high-speed data acquisition controller.
Further optimizing the scheme, the displacement sensor comprises a speed pedal displacement sensor and a brake pedal displacement sensor, and is used for acquiring the speed of the electric automobile and the stroke of a brake pedal; the speed pedal displacement sensor and the brake pedal displacement sensor are stay wire displacement sensors; the displacement sensor is installed in front of an instrument panel of the electric automobile through a tooling clamp, and the displacement sensor further comprises a pull wire end, wherein the pull wire end is connected to an acceleration pedal and a brake pedal of the electric automobile. The displacement sensor converts the displacement of the acceleration pedal and the brake pedal of the electric automobile into 0-10V electric signals, and the electric signals are transmitted to the high-speed data acquisition controller through an analog acquisition port.
In a further optimization scheme, the high-speed data acquisition controller is connected with the chassis dynamometer controller through a chassis dynamometer communication port and is used for acquiring wheel-side output power, speed and acceleration signals of the electric automobile in the running process of the automobile; in this embodiment, the chassis dynamometer communication port is an RJ45 network port.
Further optimizing the scheme, the temperature acquisition module comprises an outside environment temperature acquisition module and an inside environment temperature acquisition module which are respectively used for acquiring the temperature of the environment and the temperature of the measuring point inside the electric automobile; the internal measuring point of the electric automobile comprises an air conditioner and a heating system; in this embodiment, the temperature acquisition module is a thermocouple temperature acquisition module.
In the description of the present invention, it is to be understood that the terms "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like indicate orientations or positional relationships based on those shown in the drawings, and are merely for convenience of description of the present invention, and do not indicate or imply that the device or element so referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore, should not be construed as limiting the present invention.
The above-mentioned embodiments are only intended to describe the preferred embodiments of the present invention, but not to limit the scope of the present invention, and those skilled in the art should also be able to make various modifications and improvements to the technical solution of the present invention without departing from the spirit of the present invention, and all such modifications and improvements are intended to fall within the scope of the present invention as defined in the appended claims.
Claims (10)
1. An electric automobile energy detection and analysis system is characterized by comprising a high-speed data acquisition controller, an energy flow analysis upper computer, a plurality of energy flow detection sensors, a plurality of displacement sensors, a plurality of temperature acquisition modules and a chassis dynamometer controller; the energy flow analysis upper computer, the energy flow detection sensor, the displacement sensor, the temperature acquisition module and the chassis dynamometer controller are respectively connected with the high-speed data acquisition controller; the high-speed data acquisition controller still through OBDII bus communication controller with electric automobile's OBD interface links to each other, acquires electric automobile's battery management system BMS data.
2. The electric vehicle energy detection and analysis system of claim 1, wherein the high-speed data acquisition controller employs a synchronization mechanism to synchronize acquisition time domains of each channel data; and the high-speed data acquisition controller is used for synchronously acquiring data of each channel according to a preset frequency, wherein the preset frequency is more than 50 HZ.
3. The electric vehicle energy detection and analysis system of claim 1, wherein the high-speed data acquisition controller packs the acquired data according to a time sequence and transmits the packed data to the energy flow analysis upper computer.
4. The system of claim 1, wherein the energy flow detection sensor is connected in series to an energy transmission circuit of the electric vehicle via a connector, and collects real-time data parameters of the energy transmission circuit of the electric vehicle, wherein the real-time data parameters include current, voltage, and power.
5. The electric vehicle energy detection and analysis system of claim 1, wherein the OBDII bus communication controller is connected with an OBD port of the electric vehicle through a plug to obtain BMS data, vehicle speed and acceleration operating parameters of the electric vehicle.
6. The system for detecting and analyzing energy of an electric vehicle of claim 1, wherein the displacement sensors comprise a speed pedal displacement sensor and a brake pedal displacement sensor, and are used for acquiring the speed of the electric vehicle and the travel of a brake pedal.
7. The electric vehicle energy detection and analysis system of claim 6, wherein the displacement sensor is mounted in front of an instrument panel of the electric vehicle by a tooling fixture; the displacement sensor also comprises a pull wire end which is connected to an acceleration pedal and a brake pedal of the electric automobile; the displacement sensor converts the displacement of the acceleration pedal and the brake pedal of the electric automobile into 0-10V electric signals, and the electric signals are transmitted to the high-speed data acquisition controller through an analog acquisition port.
8. The electric vehicle energy detection and analysis system of claim 1, wherein the high-speed data acquisition controller is connected to the chassis dynamometer controller via a chassis dynamometer communication port, and acquires wheel-side output power, speed, and acceleration signals of the electric vehicle during vehicle operation.
9. The electric vehicle energy detection and analysis system of claim 1, wherein the temperature acquisition module comprises an external environment temperature acquisition module and an internal environment temperature acquisition module, and the external environment temperature acquisition module and the internal environment temperature acquisition module are respectively used for acquiring the temperature of an environment and the temperature of a measuring point inside the electric vehicle.
10. The electric vehicle energy detection and analysis system of claim 1, wherein the high-speed data acquisition controller synchronizes acquisition time domains of data of each channel using a synchronization mechanism of a DC mode in EtherCAT.
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| CN202021627825.3U CN212585989U (en) | 2020-08-07 | 2020-08-07 | Electric automobile energy detection and analysis system |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113204255A (en) * | 2021-06-21 | 2021-08-03 | 北京博科测试系统股份有限公司 | Multi-degree-of-freedom vibration table power spectrum loading control method |
| CN113682184A (en) * | 2021-09-30 | 2021-11-23 | 西安特来电领充新能源科技有限公司 | Charging detection method, device and system for electric automobile |
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2020
- 2020-08-07 CN CN202021627825.3U patent/CN212585989U/en active Active
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113204255A (en) * | 2021-06-21 | 2021-08-03 | 北京博科测试系统股份有限公司 | Multi-degree-of-freedom vibration table power spectrum loading control method |
| CN113204255B (en) * | 2021-06-21 | 2021-12-21 | 北京博科测试系统股份有限公司 | Multi-degree-of-freedom vibration table power spectrum loading control method |
| CN113682184A (en) * | 2021-09-30 | 2021-11-23 | 西安特来电领充新能源科技有限公司 | Charging detection method, device and system for electric automobile |
| CN113682184B (en) * | 2021-09-30 | 2023-12-12 | 西安领充无限新能源科技有限公司 | Charging detection method, device and system for electric automobile |
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