CN103063944A - Vehicle electric transmission device test platform - Google Patents
Vehicle electric transmission device test platform Download PDFInfo
- Publication number
- CN103063944A CN103063944A CN2012105289752A CN201210528975A CN103063944A CN 103063944 A CN103063944 A CN 103063944A CN 2012105289752 A CN2012105289752 A CN 2012105289752A CN 201210528975 A CN201210528975 A CN 201210528975A CN 103063944 A CN103063944 A CN 103063944A
- Authority
- CN
- China
- Prior art keywords
- test
- power
- electric
- bus
- power supply
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Images
Abstract
A vehicle electric transmission device test platform comprises a vehicle electric transmission device and a test control computer, wherein the electric transmission device comprises two output ends, a first output end is sequentially connected with a first rotating speed torque tester, a first mechanical inertia unit and a first alternating current motor tester; a second output end is sequentially connected with a second rotating speed torque tester, a second mechanical inertia unit and a second alternating current motor tester. The duel-output end connecting device is arranged in symmetry. The first alternating current motor tester is connected with a low voltage alternating current distribution power grid through a first frequency conversion power supply and the second alternating current motor tester is connected with the low voltage alternating current distribution power grid through a second frequency conversion power supply.
Description
Technical field
The present invention relates to vehicle bench test technical field, be specifically related to a kind of test platform of vehicle electrical gearing.
Background technology:
The vehicle electrical gearing is comprised of two or many drive motor and gear drive, and Main Function is that mechanical energy drives Vehicle Driving Cycle with the electric energy conversion of engine-generator set and energy storage device.Power control unit carries out conversion and control according to the instruction that general controller is sent to electric energy, for electric actuator provides electric energy required under the different operating modes.Traditional mechanical driving device input and output are mechanical energy, are output as mechanical energy and the electric actuator input power is electric energy, and therefore, the pilot system of vehicle electrical gearing is more complicated than conventional truck machine driven system.
At present, the electric vehicle test system lays particular emphasis on more to be tested vehicle engine assembly, not only can't carry out routine tests to electric actuator, also can't obtain exactly the performance of electric actuator.Problems of the prior art mainly contain: can not realize the closed loop of electric power, energy consumption is larger, and is less economical; Fail effectively to solve high-low pressure signal synchronism detection problem, test accuracy is low; System architecture is complicated, and the test specific aim is poor.
Summary of the invention:
The present invention is intended to the performance test problem for the vehicle electrical gearing, a kind of perfect test platform solution is provided, not only can realize the simulation to vehicle-mounted composite power source and vehicle load characteristic, can also realize driving with damped condition under two-way electric power closed loop, satisfy the multiple test demand of vehicle electrical gearing.
The present invention relates to a kind of vehicle electrical gearing test platform, comprising: vehicle electrical gearing, controlling test computing machine.Wherein, electric actuator has the doubleway output end, the first output terminal connects the first rotational speed and torque tester, the first mechanical inertia unit and the first alternating current generator dynamometer machine successively, the second output terminal connects the second rotational speed and torque tester, the second mechanical inertia unit and the second alternating current generator dynamometer machine successively, doubleway output end connection device is arranged symmetrically, the first electric A.C. dynamometer is connected with the low-voltage alternating-current distrbution network by the first conversion power supply power supply, and the second electric A.C. dynamometer connects by the second conversion power supply power supply and low-voltage alternating-current distrbution network.
The power input end that connects electric actuator is connected with the low-voltage alternating-current distrbution network by the interchange output interface of alternating current-direct current composite power source, and battery system, super-capacitor device all are connected with dc bus with the resistance energy consumption equipment.
The power input end that connects electric actuator connects dc bus by the electric transmission power control unit, and dc bus is connected to the low-voltage alternating-current distrbution network by the direct current output interface of alternating current-direct current composite power source again; Battery system, super-capacitor device all are connected with dc bus with the resistance energy consumption equipment.
Test platform control system communication network is made of jointly CAN bus, industrial field bus and three kinds of networks of Ethernet, wherein communicates by the CAN bus between the tested device, satisfies the vehicle application demand; Power-supply device communicates by industrial field bus, satisfies the safety and reliability demand of high voltage supply system; Testing apparatus adopts Ethernet to communicate, and satisfies real-time and the scalability requirement of data high-speed transmission.
Conversion power supply power supply and alternating current-direct current composite power source all can be realized the bi-directional electric power transmission, can satisfy the test demand that electric actuator drives and brakes two kinds of working conditions, and by the bi-directional electric power power closed loop in the AC distribution electrical network realization process of the test.
The controlling test computing machine comprises: power management module, carry out switching controls and output characteristics control to the multichannel output of alternating current-direct current composite power source; The load management module, the synchronous and independent loads of control both sides electric A.C. dynamometer; The test data administration module is to the synchronous acquisition of high-voltage power signal and simulating signal, automatically process and carry out the storage of single file; The experiment process control module, flow process and the automatic test of management different tests project.
The equipment that dc bus connects is limber hook up, power supply supply mode according to electric actuator, select to adopt electric energy feedback pattern, super capacitor energy-storage pattern or braking resistor consumption patterns different working modes, thereby realize the accurate simulation to Vehicular direct-current bussed supply characteristic.
The principal feature of test platform of the present invention comprises:
1) perfect in shape and function can be satisfied the multiple performance test demand under electric actuator driving and the damped condition.
2) flexible configuration not only can be realized different inertia, the load characteristic simulation of different output characteristics, and can realize the different topology structure, the power supply simulated behavior of different connected modes.
3) strong adaptability possesses the experimental test ability that any multiple power is inputted the electric actuator of doubleway output of finishing.
4) test accuracy is high, can realize synchronism detection, collection and the data storage of high-tension electricity power signal and low-voltage analog signal, adopts Fast Ethernet communication, has guaranteed the real-time of data transmission.
5) good economy performance can realize the electric power closed loop, and energy consumption is little in the process of the test, good energy-conserving effect.
Description of drawings:
Fig. 1 test platform principle of compositionality of the present invention schematic diagram
Among the figure: 1 vehicle electrical gearing, 2 rotational speed and torque instrument, 3 mechanical inertias, 4 electric A.C. dynamometers, 5 dynamometer machine conversion power supply power supplys, 6 electric transmission power are controlled single PCU, 7 electric transmission general controller TCU, 8 battery systems, 9 super capacitors, 10 resistance energy consumption equipments, 11 alternating current-direct current composite power sources, 12 power analyzers, 13 signal collecting devices, 14 controlling test computing machines.
Embodiment:
Accompanying drawing has provided structural representation of the present invention, and the present invention will be further described below in conjunction with the drawings and specific embodiments.
The technical solution adopted in the present invention is: a kind of test platform of vehicle electrical gearing, the equipment such as single PCU, electric transmission general controller TCU of being controlled by electric A.C. dynamometer, conversion power supply power supply, mechanical inertia, rotational speed and torque tester, alternating current-direct current composite power source, battery system, super capacitor, resistance energy consumption equipment, controlling test computing machine, power test equipment, signal collecting device, vehicle electrical gearing, electric transmission power consist of.
The connected mode of test platform of the present invention is: electric actuator two-way machinery output terminal connects rotational speed and torque tester, mechanical inertia unit and alternating current generator dynamometer machine successively, and electric A.C. dynamometer is connected with the low-voltage alternating-current distrbution network by the conversion power supply power supply; The power input end of vehicle electrical gearing has two kinds of connected modes, namely can be connected with the low-voltage alternating-current distrbution network by the interchange output interface of alternating current-direct current composite power source, also can connect dc bus by electric transmission power control unit PCU, dc bus is connected to the low-voltage alternating-current distrbution network by the dc power output end of alternating current-direct current composite power source again.
Load system is made of mechanical inertia unit and alternating current generator dynamometer machine, be arranged symmetrically at electric actuator bilateral output terminal, can realize different moment of inertia, the doubleway output load characteristic simulation of different qualities curve, its loading characteristic curve is provided by the controlling test computing machine.
Power-supply system is comprised of the multiplexing power supply of alternating current-direct current and conversion power supply power supply, and the conversion power supply power supply provides electric energy for ac dynamometer, and the multiplexing power supply of alternating current-direct current provides electric energy for electric actuator.Wherein, the multiplexing power supply of alternating current-direct current has direct supply output and AC power is exported two kinds of mode of operations: when it is operated in direct supply pattern lower time, can realize the continuous adjusting of DC voltage and stable Voltage-output, PCU provides direct current energy for the electric transmission power control unit; When it is operated in AC power pattern lower time, can power to electric actuator by direct current, thereby realize electric actuator experimental test under the inactivity control module PCU state.
All power-supply devices all are connected with the low-voltage alternating-current distrbution network, and can realize the bidirectional electric energy transmission.When electric actuator operated in the driving operating mode, electrical power flow was to being: the multiplexing power supply → electric actuator of AC distribution electrical network → alternating current-direct current → electric A.C. dynamometer → AC frequency conversion power supply → AC distribution electrical network; When electric actuator operated in damped condition, electrical power flow was to being: the multiplexing power supply of AC distribution electrical network → AC frequency conversion power supply → electric actuator → electric A.C. dynamometer → alternating current-direct current → AC distribution electrical network.Thereby realized the two-way electric power closed loop under driving and the braking mode.
Dc bus has a plurality of equipment interfaces simultaneously, can connect battery system, super-capacitor device and resistance energy consumption equipment, thereby can realize independent Power supply, accumulator, super capacitor are powered separately, direct supply and battery system are united power supply, and direct supply and super capacitor are united the power supply characteristic simulation of the various topological structures such as power supply.
When electric drive system adopts mobile generator and battery system to unite the working method of power supply, when testing, super-capacitor device, resistance energy consumption equipment and dc bus can be disconnected, select direct supply and battery system to unite the mode of operation of power supply, make direct supply simulation mobile generator output characteristics by the controlling test computing machine, realize direct current supply to electric actuator with battery system.
The control system communication network of described test platform is made of CAN bus, industrial field bus and three kinds of networks of Ethernet.Wherein communicate by the CAN bus between the tested device, satisfy the vehicle application demand; Power supply and load equipment communicate by industrial field bus, satisfy the safety and reliability demand of high voltage supply system; Test macro adopts Ethernet to communicate, and satisfies real-time and the scalability requirement of data high-speed transmission.
The test platform of a kind of vehicle electrical gearing of the present invention, achievable test comprises: the test of electric actuator driveability, electric actuator braking ability test, electric actuator acceleration test, the test of electric actuator control system, the test of electric actuator steering stability.The key step of carrying out the test of electric actuator driveability is as follows:
1) inertia of setting the first mechanical inertia unit and the second mechanical inertia unit is J1=J2=0, utilizes the controlling test computing machine that the multiplexing power settings of alternating current-direct current is the direct current supply pattern, and the setting supply voltage is U0;
2) by electric transmission general controller TCU the drive motor working speed of electric actuator is set as n11=n21=nset, electric actuator is moved under the rotating speed of setting.Utilize the controlling test computing machine that the locked-in torque of the first electric A.C. dynamometer and the second electric A.C. dynamometer is set as T12=T22=Tset;
3) utilize the input voltage U11 of the drive motor of power test device measuring electric actuator, U21 input current I11, I21 and power factor, thus can calculate the power input of electric actuator:
Utilize rotating speed rotating speed analyser to measure the output speed n12 of electric actuator, n22 and output torque T12, T22, thus can calculate the output power of electric actuator:
P
2＝(T
12×n
12+T
22×n
22)/9.55
Can further calculate the efficient of electric actuator:
η＝P
2/P
1×100％
4) in test run by the controlling test real-time monitoring of computer and record the parameter such as pilot oil pressure, lubricating oil pressure, lubricating oil temperature, coolant temperature, electric actuator temperature of electric actuator.
This test platform comprises the first electric A.C. dynamometer 4, conversion power supply power supply 5, mechanical inertia 3, rotational speed and torque tester 2, alternating current-direct current composite power source 11, battery system 8, super capacitor 9, resistance energy consumption equipment 10, controlling test computing machine 14, power test equipment 12, signal collecting device 13, vehicle electrical gearing 1, electric transmission power control unit PCU6, electric transmission general controller TCU7.Wherein vehicle electrical gearing 1 both sides output terminal connects respectively rotational speed and torque tester 2, mechanical inertia unit 3 and alternating current generator dynamometer machine 4, and symmetria bilateralis is arranged; Electric A.C. dynamometer 4 is connected with the low-voltage alternating-current distrbution network by conversion power supply power supply 5, the power input end of vehicle electrical gearing 1 namely can be connected with the low-voltage alternating-current distrbution network by the interchange output interface of alternating current-direct current composite power source 11, also can be connected with dc bus by electric transmission power control unit PCU6, dc bus is connected to the connection of low-voltage alternating-current distrbution network by the dc power output end of alternating current-direct current composite power source 11; Battery system 8, super-capacitor device 9 all are connected with dc bus with resistance energy consumption equipment 10.
Opertaing device forms CAN bus, industrial field bus and three control of Ethernet network, three networks are connected by controlling test computing machine 14, wherein electric transmission power control unit 6, electric transmission general controller 7 communicate by the CAN bus with battery system 8, can satisfy the vehicle application demand; Conversion power supply power supply, alternating current-direct current composite power source 11 communicate by the industrial field bus network with the controlling test computing machine, can guarantee the safety and reliability of high voltage supply system; Adopt Fast Ethernet to communicate between power test equipment 12, signal collecting device 13 and the controlling test computing machine 14, can realize real-time and the extensibility of test data high-speed transfer.
In test, the electric power closed loop in can realizing testing by testing laboratory's low-voltage alternating-current distrbution network, simultaneously, the electric power energy can transmitted in both directions.Alternating current-direct current composite power source 11 has direct current output interface and multichannel AC output interface, realizes respectively the function of the simulation of vehicle main electricity and the simulation of vehicle power control module.Can be according to the test function demand, utilize the power supply control software of controlling test computing machine 14 to finish between AC power and the direct supply and switch, and realize the analog functuion of power of alterating and direct current output characteristic curve.
This test platform can be according to the working method of tested electric drive system, can select to adopt freely switching of the different working modes such as electric energy feedback pattern, super capacitor energy-storage pattern and braking resistor consumption patterns, thereby realize the accurate simulation to the Vehicular direct-current bus.
For electric actuator experimental test demand, adopt the data acquisition system (DAS) based on Fast Ethernet.Wherein, utilize 12 pairs of high-tension electricity power signals of power test equipment to test, utilize 13 pairs of low-voltage analog signals of high-speed data acquisition equipment to test, power test equipment is connected Fast Ethernet controlling test computing machine 14 and connects with data acquisition equipment, and utilizes the controlling test computing machine to finish test control and data storage function.Controlling test computing machine 14 can be realized the synchronous acquisition of high-voltage power signal and simulating signal, automatically process and single file storage, and Fast Ethernet can guarantee accuracy and the real-time of image data.
The above only is preferred implementation of the present invention; should be pointed out that for those skilled in the art, under the prerequisite that does not break away from the technology of the present invention principle; can also make some improvement and distortion, these improvement and distortion also should be considered as protection scope of the present invention.
Claims (7)
1. vehicle electrical gearing test platform, comprise: vehicle electrical gearing (1), controlling test computing machine (14), it is characterized in that: electric actuator (1) has the doubleway output end, the first output terminal connects the first rotational speed and torque tester (2) successively, the first mechanical inertia unit (3) and the first alternating current generator dynamometer machine (4), the second output terminal connects the second rotational speed and torque tester (2 ') successively, the second mechanical inertia unit (3 ') and the second alternating current generator dynamometer machine (4 '), doubleway output end connection device is arranged symmetrically, the first electric A.C. dynamometer (4) is connected with the low-voltage alternating-current distrbution network by the first conversion power supply power supply (5), and the second electric A.C. dynamometer (4 ') connects by the second conversion power supply power supply (5 ') and low-voltage alternating-current distrbution network.
2. vehicle electrical gearing test platform according to claim 1, it is characterized in that, the power input end that connects electric actuator (1) is connected with the low-voltage alternating-current distrbution network by the interchange output interface of alternating current-direct current composite power source (11), and battery system (8), super-capacitor device (9) all are connected with dc bus with resistance energy consumption equipment (10).
3. vehicle electrical gearing test platform according to claim 1, it is characterized in that, the power input end that connects electric actuator (1) connects dc bus by electric transmission power control unit (6), and dc bus is connected to the low-voltage alternating-current distrbution network by the direct current output interface of alternating current-direct current composite power source (11) again; Battery system (8), super-capacitor device (9) all are connected with dc bus with resistance energy consumption equipment (10).
4. according to claim 2 or 3 described vehicle electrical gearing test platforms, it is characterized in that, test platform control system communication network is made of jointly CAN bus, industrial field bus and three kinds of networks of Ethernet, wherein communicate by the CAN bus between the tested device, satisfy the vehicle application demand; Power-supply device communicates by industrial field bus, satisfies the safety and reliability demand of high voltage supply system; Testing apparatus adopts Ethernet to communicate, and satisfies real-time and the scalability requirement of data high-speed transmission.
5. according to claims 4 described vehicle electrical gearing test platforms, it is characterized in that, conversion power supply power supply (5) all can be realized the bi-directional electric power transmission with alternating current-direct current composite power source (11), can satisfy the test demand that electric actuator drives and brakes two kinds of working conditions, and by the bi-directional electric power power closed loop in the AC distribution electrical network realization process of the test.
6. according to claims 2 or 3 described vehicle electrical gearing test platforms, it is characterized in that, controlling test computing machine (14) comprising:
Power management module carries out switching controls and output characteristics control to the multichannel output of alternating current-direct current composite power source (11);
The load management module, the synchronous and independent loads of control both sides electric A.C. dynamometer;
The test data administration module is to the synchronous acquisition of high-voltage power signal and simulating signal, automatically process and carry out the storage of single file;
The experiment process control module, flow process and the automatic test of management different tests project.
7. according to claims 2 or 3 described vehicle electrical gearing test platforms, it is characterized in that, the equipment that dc bus connects is limber hook up, power supply supply mode according to electric actuator, select to adopt electric energy feedback pattern, super capacitor energy-storage pattern or braking resistor consumption patterns different working modes, thereby realize the accurate simulation to Vehicular direct-current bussed supply characteristic.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012105289752A CN103063944A (en) | 2012-12-04 | 2012-12-04 | Vehicle electric transmission device test platform |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012105289752A CN103063944A (en) | 2012-12-04 | 2012-12-04 | Vehicle electric transmission device test platform |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN103063944A true CN103063944A (en) | 2013-04-24 |
Family
ID=48106650
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2012105289752A Pending CN103063944A (en) | 2012-12-04 | 2012-12-04 | Vehicle electric transmission device test platform |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN103063944A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103780697A (en) * | 2014-01-23 | 2014-05-07 | 广州睿嵌电子技术有限公司 | Common platform system of vehicle-mounted electronic processing unit and data communication method of common platform system |
| CN108872729A (en) * | 2018-03-27 | 2018-11-23 | 智车优行科技（上海）有限公司 | Vehicle high voltage system test device and method |
| CN112461557A (en) * | 2020-11-11 | 2021-03-09 | 中国北方车辆研究所 | Multifunctional electric transmission test system with variable topological structure and test method |
| CN112747919A (en) * | 2020-12-28 | 2021-05-04 | 中国北方车辆研究所 | Test tool for coaxial double-input double-output mechanism |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0366446B1 (en) * | 1988-10-25 | 1994-06-22 | Kabushiki Kaisha Meidensha | Electric motor powered testing apparatus for automotive power transmission |
| CN1539671A (en) * | 2003-04-22 | 2004-10-27 | 北京理工大学 | Device for testing electrical transmission in two routes of electric vehicle |
| CN101241168A (en) * | 2007-08-31 | 2008-08-13 | 奇瑞汽车股份有限公司 | Hybrid power automobile drive electric motor test bench and test method |
| CN102004198A (en) * | 2010-09-29 | 2011-04-06 | 上海海事大学 | Double-axis feedback low-voltage alternating current variable frequency electric transmission test system and method |
| CN102243145A (en) * | 2011-04-28 | 2011-11-16 | 株洲南车时代电气股份有限公司 | Testing apparatus and method for electric drive system of electric automobile |
| CN102749194A (en) * | 2012-07-26 | 2012-10-24 | 株洲中达特科电子科技有限公司 | Transmission testing system |
-
2012
- 2012-12-04 CN CN2012105289752A patent/CN103063944A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0366446B1 (en) * | 1988-10-25 | 1994-06-22 | Kabushiki Kaisha Meidensha | Electric motor powered testing apparatus for automotive power transmission |
| CN1539671A (en) * | 2003-04-22 | 2004-10-27 | 北京理工大学 | Device for testing electrical transmission in two routes of electric vehicle |
| CN101241168A (en) * | 2007-08-31 | 2008-08-13 | 奇瑞汽车股份有限公司 | Hybrid power automobile drive electric motor test bench and test method |
| CN102004198A (en) * | 2010-09-29 | 2011-04-06 | 上海海事大学 | Double-axis feedback low-voltage alternating current variable frequency electric transmission test system and method |
| CN102243145A (en) * | 2011-04-28 | 2011-11-16 | 株洲南车时代电气股份有限公司 | Testing apparatus and method for electric drive system of electric automobile |
| CN102749194A (en) * | 2012-07-26 | 2012-10-24 | 株洲中达特科电子科技有限公司 | Transmission testing system |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103780697A (en) * | 2014-01-23 | 2014-05-07 | 广州睿嵌电子技术有限公司 | Common platform system of vehicle-mounted electronic processing unit and data communication method of common platform system |
| CN103780697B (en) * | 2014-01-23 | 2017-07-21 | 广州睿嵌电子技术有限公司 | Vehicle electronics processing unit common platform system and its data communication method |
| CN108872729A (en) * | 2018-03-27 | 2018-11-23 | 智车优行科技（上海）有限公司 | Vehicle high voltage system test device and method |
| CN112461557A (en) * | 2020-11-11 | 2021-03-09 | 中国北方车辆研究所 | Multifunctional electric transmission test system with variable topological structure and test method |
| CN112747919A (en) * | 2020-12-28 | 2021-05-04 | 中国北方车辆研究所 | Test tool for coaxial double-input double-output mechanism |
| CN112747919B (en) * | 2020-12-28 | 2022-07-26 | 中国北方车辆研究所 | Test tool for coaxial double-input double-output mechanism |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN100573177C (en) | A kind of hybrid power automobile drive electric motor test bench and method of testing | |
| CN101587345B (en) | Function test system for controller used in hybrid power or electric vehicle | |
| CN101377682B (en) | Service life test system of hybrid power automobile controller | |
| CN104502106A (en) | Power assembly test table for hybrid electric vehicle | |
| CN101644624B (en) | Steering test bench of electrical-closed tracked vehicle transmission device | |
| CN105372076A (en) | Multifunctional hybrid power general test stand and test method | |
| CN101963805A (en) | Redundant locomotive WorldFIP network physical simulation platform | |
| CN103344442A (en) | Hybrid power system test bed and operating method thereof | |
| CN103063944A (en) | Vehicle electric transmission device test platform | |
| CN106771792A (en) | A kind of locomotive converter test system | |
| CN104569808A (en) | Testing system for generator set | |
| CN207832980U (en) | A kind of new energy vehicle power battery pack and battery management engine bench test system | |
| CN115656659A (en) | Hybrid power unmanned electric power and electric drive test system and test method under multiple working conditions | |
| CN203629836U (en) | Alternating current transmission comprehensive testing stand for large-scale mining electric-wheeled self-dumping truck | |
| CN109507588A (en) | A kind of energy-saving electrical machine band load pilot system | |
| CN103455024A (en) | System and method for testing ECU | |
| CN105547693A (en) | Four-wheel driven automobile transfer case loading detection testboard | |
| CN109979292B (en) | Semi-physical test platform of marine hybrid energy electric propulsion system | |
| CN201853133U (en) | Testing device for motor controller | |
| CN110750054A (en) | Small semi-physical intelligent universal simulation platform and method for electric steering engine | |
| CN111324106A (en) | Vehicle control unit and battery management system combined hardware-in-the-loop test bench | |
| CN103368229A (en) | Ground electric vehicle battery diagnosis device and diagnostic method thereof | |
| CN213414261U (en) | Lithium battery hybrid power test system experimental research system | |
| CN103472390B (en) | Electromechanical testing motor is to dragging platform and hybrid power system thereof | |
| CN100545619C (en) | A kind of engine static-state test platform wheel is to the speed synchronization control device |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20130424 |