CN109141916B - Electric automobile auxiliary power unit testing device and testing method - Google Patents
Electric automobile auxiliary power unit testing device and testing method Download PDFInfo
- Publication number
- CN109141916B CN109141916B CN201810909566.4A CN201810909566A CN109141916B CN 109141916 B CN109141916 B CN 109141916B CN 201810909566 A CN201810909566 A CN 201810909566A CN 109141916 B CN109141916 B CN 109141916B
- Authority
- CN
- China
- Prior art keywords
- power
- auxiliary power
- power unit
- controller
- driving motor
- 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.)
- Expired - Fee Related
Links
Images
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
- G01M17/00—Testing of vehicles
- G01M17/007—Wheeled or endless-tracked vehicles
Abstract
An electric vehicle auxiliary power unit testing device and a testing method. The auxiliary power unit is the core of the mileage extension type electric automobile, the rationality of the offline test method is more and more important, and the inspection of the output power and efficiency of the auxiliary power unit and the long-time loaded operation capability are necessary. The invention comprises the following components: the auxiliary power unit comprises an engine (1), the engine is respectively connected with a starter/generator (2), an engine controller (20), the starter/generator is connected with an intelligent controller (4), an alternating current/direct current resistance load (17) and an alternating current/direct current power analyzer (18) through an alternating current power cable (3), the intelligent controller is connected with a load selection controller (6) and the alternating current/direct current power analyzer through a direct current power cable (5), and the load selection controller is respectively connected with a grid-connected inverter power supply (7), a power battery pack (16) and an alternating current/direct current resistance load through wires. The invention is used for the auxiliary power unit test device of the electric automobile.
Description
The technical field is as follows:
the invention relates to a testing device and a testing method for an auxiliary power unit of an electric automobile.
Background art:
at present, the power storage battery pack of the electric automobile has the advantages of low specific energy, short one-time charging continuous mileage, long charging time, unpopular charging stations and difficulty in realizing large-scale commercialization in a short time. In order to solve the difficult problem of popularization of electric automobiles, the automobile industry proposes and develops a new electric automobile operation mode, namely a mileage extension type electric automobile; the mileage-extended electric automobile is provided with a set of auxiliary power unit on a pure electric automobile, and can supply power to a driving motor of the electric automobile when the electric quantity of a battery is insufficient, so that the electric automobile can realize continuous running capability of hundreds of kilometers; the weight of the mileage extension type vehicle-mounted battery of the electric automobile is only about 50% of that of the pure electric automobile, so that the cost and the weight of the vehicle-mounted battery can be greatly reduced;
the mileage extension type electric vehicle is directly driven by a motor and has a non-hybrid power structure, and a power battery pack is always in a shallow charging and discharging state, so that the service life of the power battery pack is greatly prolonged; the capacity of the power battery pack is large, the automobile can run for a long distance in a pure electric mode, and meanwhile, the automobile is provided with an external charging mode and can be charged at the valley time of night electricity utilization, so that the electric automobile provided with the auxiliary power unit at home and abroad is a practical product for transition from the traditional fuel oil automobile to the pure electric automobile;
the auxiliary power unit is the core of the mileage-extended electric automobile, and the rationality of the offline test method of the auxiliary power unit is more and more important, so that it is necessary to design a set of test device to test the output power and efficiency of the auxiliary power unit and the long-time loaded operation capability.
The invention content is as follows:
the invention aims to provide a testing device and a testing method for an auxiliary power unit of an electric automobile.
The above purpose is realized by the following technical scheme:
the utility model provides an electric automobile auxiliary power unit test device which constitutes and includes: the auxiliary power unit comprises an engine, the engine is respectively connected with a starter/generator and an engine controller, the starter/generator is respectively connected with an intelligent controller, an AC/DC resistance load and an AC/DC power analyzer through an AC power cable, the intelligent controller is respectively connected with a load selection controller and the AC/DC power analyzer through a DC power cable, and the load selection controller is respectively connected with a grid-connected inverter power supply, a power battery pack and the AC/DC resistance load through leads.
The auxiliary power unit testing device for the electric automobile is characterized in that the grid-connected inverter power supply is connected with a power grid, the power battery pack is connected with the main driving motor controller through a wire, the main driving motor controller is connected with the main driving motor through a wire, the main driving motor is connected with the torque sensor through the coupler A, the torque sensor is connected with the electromagnetic brake through the coupler B, and the electromagnetic brake is connected with the excitation controller through a wire.
The auxiliary power unit test device of the electric automobile is characterized in that the excitation controller, the main driving motor controller, the power battery pack, the alternating current and direct current resistor load, the load selection controller, the intelligent controller, the engine controller and the system controller are connected through a CAN bus.
An electric automobile auxiliary power unit test device and a test method thereof are disclosed, the method comprises the following steps: the auxiliary power unit is an auxiliary power generation unit of a whole vehicle power system and mainly comprises an engine, a starting/power generator and an intelligent controller, wherein the engine is a power source of the auxiliary power unit and is also a chemical energy/mechanical energy conversion unit; the starting/power generation integrated motor is adopted by the starting/power generation integrated motor, and when the engine is started, the intelligent controller controls the motor to work in an electric state and is used for starting the engine; after the engine is started, the generator is converted into a power generation state, the intelligent controller has the functions of rectification and boosting, supplies power to a load, converts three-phase alternating current output by the generator into direct current, supplies power to the main driving motor, and simultaneously charges the power battery pack; the system controller realizes intelligent control of the working state of the auxiliary power unit through a control algorithm according to the detected CAN bus signal; the main driving motor, the main driving motor controller and the electromagnetic brake are used for simulating the use condition of electric energy in the actual vehicle running process;
the testing device is compatible with various control strategies, the system controller coordinates all the control units to complete the test of the auxiliary power unit according to different control strategies, and the device can complete the test of the following four control strategies:
(1) constant power control strategy
The control strategy determines the opening and closing of the auxiliary power unit according to the SOC threshold value of the power battery pack and sets the upper limit value SOC of the battery SOCmaxAnd a lower limit value SOCminWhen the SOC value of the battery is larger than the SOCmaxWhen so, the auxiliary power unit is turned off; when the SOC value of the battery is lower than the SOCminWhen the power is used, the auxiliary power unit is started, works at the optimal efficiency point and outputs constant power; if the main driving motor is in working state, a part of power is supplied to the main driving motor to make the vehicleThe running is continued, and the other part of redundant power is used according to the three load conditions; when the SOC of the power battery pack is positioned at the SOCmaxAnd SOCminIn the meantime, the auxiliary power unit maintains the working state at the previous moment; SOCmaxAnd SOCminThe value of (A) is related to environmental factors such as external temperature, humidity and the like, and the system can automatically set the optimal value;
(2) power follow control strategy
The start and stop of the auxiliary power unit under the control strategy are not only related to the SOC of the power battery, but also need to refer to the power requirement of the main driving motor and the current working state of the auxiliary power unit; when the required power of the main driving motor is high or the SOC value of the power battery is low, the auxiliary power unit is started; only when the SOC of the power battery is higher than a preset upper limit value SOCmaxWhen the required power of the vehicle is smaller than a preset value, the auxiliary power unit is closed; meanwhile, setting a state maintaining area, wherein in the state maintaining area, the auxiliary power unit is kept on when being started at the previous moment; the power is turned off at the previous moment, the power is kept turned off, and once the auxiliary power unit works, the output power is changed along with the load power;
(3) constant power + power following control strategy
The control strategy combines the former two strategies for use, so that the auxiliary power unit and the power battery work in a relatively high-efficiency area, and the problems of auxiliary power unit discharge and power battery service life are considered, namely when the output power of the main driving motor exceeds 70% of rated power, a power following control strategy is adopted, and the large-current discharge of the power battery pack is avoided; when the output power of the main driving motor is lower than 70% of the rated power, the auxiliary power unit is closed according to the current SOC state, the system efficiency is improved, and the emission is improved;
(4) equivalent fuel consumption control strategy
The control strategy converts the electric energy consumed by the power battery in the charging and discharging process into the energy consumed or stored by the auxiliary power unit, forms a total fuel consumption model of the system with the actual fuel consumption of the auxiliary power unit, calculates the minimum value of the model, and selects the point corresponding to the minimum value as the working point of the current auxiliary power unit.
Has the advantages that:
1. the auxiliary power unit of the invention adopts a starting/power generation integrated motor, so that a special starter for an engine can be saved, the volume and the weight of the auxiliary power unit are reduced, the cost is saved, and the working reliability is improved.
2. The invention adopts a starting/power generation integrated motor, omits an engine starter, controls the electric and power generation modes of the motor through an intelligent controller, and is compatible with various control strategies including a constant power control strategy, a power following control strategy, a constant power + power following control strategy and an equivalent fuel consumption control strategy.
3. The structure of the invention has three load modes, in the charging mode of the power battery pack, three-phase alternating current output by the generator is rectified and boosted to charge the power battery pack, and the battery pack internally comprises a battery management system, so that the charging process can be monitored in real time, and the structure is convenient and practical.
4. In the grid-connected inversion mode, the grid-connected inversion power supply can convert high-voltage direct current into alternating current with the same frequency, the same phase and the same amplitude as a public power grid; in the resistance load mode, the output capacity of the auxiliary power unit is tested through continuously adjustable resistance type loads, and the main driving motor and the electromagnetic brake are used for simulating the use condition of electric energy in the actual vehicle running process.
Description of the drawings:
FIG. 1 is a schematic structural diagram of the present invention.
The specific implementation mode is as follows:
example 1:
the utility model provides an electric automobile auxiliary power unit test device which constitutes and includes: the auxiliary power unit comprises an engine 1, the engine is respectively connected with a starter/generator 2 and an engine controller 20, the starter/generator is respectively connected with an intelligent controller 4, an alternating current/direct current resistance load 17 and an alternating current/direct current power analyzer 18 through an alternating current power cable 3, the intelligent controller is respectively connected with a load selection controller 6 and the alternating current/direct current power analyzer through a direct current power cable 5, and the load selection controller is respectively connected with a grid-connected inverter power supply 7, a power battery pack 16 and the alternating current/direct current resistance load through wires.
Example 2:
according to the auxiliary power unit testing device of the electric automobile in the embodiment 1, the grid-connected inverter power supply is connected with a power grid 8, the power battery pack is connected with a main driving motor controller 9 through a lead, the main driving motor controller is connected with a main driving motor 10 through a lead, the main driving motor is connected with a torque sensor 12 through a coupler A11, the torque sensor is connected with an electromagnetic brake 14 through a coupler B13, and the electromagnetic brake is connected with an excitation controller 15 through a lead.
Example 3:
according to the auxiliary power unit testing device of the electric vehicle in the embodiment 1 or 2, the excitation controller, the main driving motor controller, the power battery pack, the ac/dc resistance load, the load selection controller, the intelligent controller, the engine controller and the system controller 19 are connected through a CAN bus.
Example 4:
a test method using the electric vehicle auxiliary power unit test apparatus described in embodiments 1 to 3, the method comprising: the auxiliary power unit is an auxiliary power generation unit of a whole vehicle power system and mainly comprises an engine, a starting/power generator and an intelligent controller, wherein the engine is a power source of the auxiliary power unit and is also a chemical energy/mechanical energy conversion unit; the starting/power generation integrated motor is adopted by the starting/power generation integrated motor, and when the engine is started, the intelligent controller controls the motor to work in an electric state and is used for starting the engine; after the engine is started, the generator is converted into a power generation state, the intelligent controller has the functions of rectification and boosting, supplies power to a load, converts three-phase alternating current output by the generator into direct current, supplies power to the main driving motor, and simultaneously charges the power battery pack; the system controller realizes intelligent control of the working state of the auxiliary power unit through a control algorithm according to the detected CAN bus signal; the main driving motor, the main driving motor controller and the electromagnetic brake are used for simulating the use condition of electric energy in the actual vehicle running process;
the testing device is compatible with various control strategies, the system controller coordinates all the control units to complete the test of the auxiliary power unit according to different control strategies, and the device can complete the test of the following four control strategies:
(1) constant power control strategy
The control strategy determines the opening and closing of the auxiliary power unit according to the SOC threshold value of the power battery pack and sets the upper limit value SOC of the battery SOCmaxAnd a lower limit value SOCminWhen the SOC value of the battery is larger than the SOCmaxWhen so, the auxiliary power unit is turned off; when the SOC value of the battery is lower than the SOCminWhen the power is used, the auxiliary power unit is started, works at the optimal efficiency point and outputs constant power; if the main driving motor is in a working state, one part of power is supplied to the main driving motor to enable the vehicle to continue to run, and the other part of redundant power is used according to three load conditions; when the SOC of the power battery pack is positioned at the SOCmaxAnd SOCminIn the meantime, the auxiliary power unit maintains the working state at the previous moment; SOCmaxAnd SOCminThe value of (A) is related to environmental factors such as external temperature, humidity and the like, and the system can automatically set the optimal value;
(2) power follow control strategy
The start and stop of the auxiliary power unit under the control strategy are not only related to the SOC of the power battery, but also need to refer to the power requirement of the main driving motor and the current working state of the auxiliary power unit; when the required power of the main driving motor is high or the SOC value of the power battery is low, the auxiliary power unit is started; only when the SOC of the power battery is higher than a preset upper limit value SOCmaxWhen the required power of the vehicle is smaller than a preset value, the auxiliary power unit is closed; meanwhile, setting a state maintaining area, wherein in the state maintaining area, the auxiliary power unit is kept on when being started at the previous moment; the power is turned off at the previous moment, the power is kept turned off, and once the auxiliary power unit works, the output power is changed along with the load power;
(3) constant power + power following control strategy
The control strategy combines the former two strategies for use, so that the auxiliary power unit and the power battery work in a relatively high-efficiency area, and the problems of auxiliary power unit discharge and power battery service life are considered, namely when the output power of the main driving motor exceeds 70% of rated power, a power following control strategy is adopted, and the large-current discharge of the power battery pack is avoided; when the output power of the main driving motor is lower than 70% of the rated power, the auxiliary power unit is closed according to the current SOC state, the system efficiency is improved, and the emission is improved;
(4) equivalent fuel consumption control strategy
The control strategy converts the electric energy consumed in the charging and discharging processes of the power battery into the energy consumed or stored by the auxiliary power unit, forms a total fuel consumption model of the system with the actual fuel consumption of the auxiliary power unit, calculates the minimum value of the model, and selects the point corresponding to the minimum value as the working point of the current auxiliary power unit;
and (3) selecting a load mode:
the load selection controller receives a system controller instruction and switches a load mode according to the whole machine working state of the test device and a control strategy;
(1) charging mode of the power battery pack:
in the mode, if the main driving motor is in a working state, part of electric energy generated by the auxiliary power unit is supplied to the main driving motor, and the other part of redundant power is used for charging the power battery pack; if the main driving motor is in a stop state, the electric energy generated by the auxiliary power unit is completely used for charging the power battery pack;
(2) grid-connected inversion mode
The grid-connected inversion mode is an auxiliary working mode of a power battery charging mode, when the battery management system detects that the power battery is full of electricity at the moment, an instruction is sent to the system controller, the system controller sends an instruction to the load selection controller, and the load is switched to the grid-connected inversion mode; if the main driving motor is in a stop state, all electric energy generated by the auxiliary power unit is used for grid-connected inversion;
(3) resistive load mode
Although the charging mode and the grid-connected inversion mode of the power battery pack can store or effectively convert the electric energy, certain disadvantages exist. The power battery pack is limited by the characteristics of the power battery pack body, the current needs to be in a certain range during charging, and the battery body is damaged due to excessive charging current; after the inverter is connected to the grid, the waveform and the phase of the output voltage highly depend on the voltage of the power grid, and the output power of the auxiliary power unit is difficult to control;
the resistance load mode can effectively solve the problems, an alternating current and direct current resistance load is adopted in the test device, the output side of the generator can be directly connected with an alternating current input end, the resistance load meets the requirement of the maximum output power of the auxiliary power unit, when the rotating speed of the engine is constant, the generator can output three-phase alternating current with stable voltage, the output current value of the generator can be changed by changing the resistance value of the resistance load, the larger the resistance value of the load is, the smaller the output current is, and the lower the output power of the generator is; the load resistance value is reduced, the output current of the generator is increased, and the output power is increased. The output side of the intelligent controller can be directly connected with the direct current input end, and the output characteristic of the generator and the rectification and boosting characteristic of the intelligent controller can be detected simultaneously. Therefore, the output characteristics of the auxiliary power unit can be comprehensively tested through the resistive load.
Claims (1)
1. A test method of an electric vehicle auxiliary power unit test device comprises the following steps: auxiliary power unit, characterized by: the auxiliary power unit comprises an engine, the engine is respectively connected with a starter/generator and an engine controller, the starter/generator is respectively connected with an intelligent controller, an AC/DC resistance load and an AC/DC power analyzer through an AC power cable, the intelligent controller is respectively connected with a load selection controller and the AC/DC power analyzer through a DC power cable, and the load selection controller is respectively connected with a grid-connected inverter power supply, a power battery pack and the AC/DC resistance load through wires;
the grid-connected inverter power supply is connected with a power grid, the power battery pack is connected with a main driving motor controller through a wire, the main driving motor controller is connected with a main driving motor through a wire, the main driving motor is connected with a torque sensor through a coupler A, the torque sensor is connected with an electromagnetic brake through a coupler B, and the electromagnetic brake is connected with an excitation controller through a wire;
the excitation controller, the main driving motor controller, the power battery pack, the alternating current and direct current resistor load, the load selection controller, the intelligent controller, the engine controller and the system controller are connected through a CAN bus;
the auxiliary power unit test device of the electric automobile has three load modes, in the charging mode of the power battery pack, three-phase alternating current output by the generator is rectified and boosted to charge the power battery pack, and the battery pack internally comprises a battery management system to monitor the charging process in real time;
the test method of the test device for the auxiliary power unit of the electric automobile comprises the following steps:
the auxiliary power unit is an auxiliary power generation unit of a whole vehicle power system and mainly comprises an engine, a starting/power generator and an intelligent controller, wherein the engine is a power source of the auxiliary power unit and is also a chemical energy/mechanical energy conversion unit;
the starting/power generation integrated motor is adopted by the starting/power generation integrated motor, and when the engine is started, the intelligent controller controls the motor to work in an electric state and is used for starting the engine; after the engine is started, the generator is converted into a power generation state, the intelligent controller has the functions of rectification and boosting, supplies power to a load, converts three-phase alternating current output by the generator into direct current, supplies power to the main driving motor, and simultaneously charges the power battery pack; the system controller realizes intelligent control of the working state of the auxiliary power unit through a control algorithm according to the detected CAN bus signal; the main driving motor, the main driving motor controller and the electromagnetic brake are used for simulating the use condition of electric energy in the actual vehicle running process;
the testing device is compatible with various control strategies, the system controller coordinates all the control units to complete the test of the auxiliary power unit according to different control strategies, and the device can complete the test of the following four control strategies:
(1) constant power control strategy
The control strategy determines the opening and closing of the auxiliary power unit according to the SOC threshold value of the power battery pack, sets the upper limit value SOCmax and the lower limit value SOCmin of the battery SOC, and closes the auxiliary power unit when the SOC value of the battery is larger than the SOCmax; when the SOC value of the battery is lower than the SOCmin, the auxiliary power unit is started to work at the optimal efficiency point and output constant power;
if the main driving motor is in a working state, one part of power is supplied to the main driving motor to enable the vehicle to continue to run, and the other part of redundant power is used according to three load conditions; when the SOC of the power battery pack is between the SOCmax and the SOCmin, the auxiliary power unit keeps the working state at the previous moment, the values of the SOCmax and the SOCmin are related to environmental factors such as external temperature, humidity and the like, and the system can automatically set the optimal value;
(2) power follow control strategy
The start and stop of the auxiliary power unit under the control strategy are not only related to the SOC of the power battery, but also need to refer to the power requirement of the main driving motor and the current working state of the auxiliary power unit; when the required power of the main driving motor is high or the SOC value of the power battery is low, the auxiliary power unit is started; the auxiliary power unit is turned off only when the SOC of the power battery is higher than a preset upper limit value SOCmax and the power required by the vehicle is smaller than a preset value; meanwhile, setting a state maintaining area, wherein in the state maintaining area, the auxiliary power unit is kept on when being started at the previous moment; the power is turned off at the previous moment, the power is kept turned off, and once the auxiliary power unit works, the output power is changed along with the load power;
(3) constant power + power following control strategy
The control strategy combines the former two strategies for use, so that the auxiliary power unit and the power battery work in a relatively high-efficiency area, and the problems of auxiliary power unit discharge and power battery service life are considered, namely when the output power of the main driving motor exceeds 70% of rated power, a power following control strategy is adopted, and the large-current discharge of the power battery pack is avoided; when the output power of the main driving motor is lower than 70% of the rated power, the auxiliary power unit is closed according to the current SOC state, the system efficiency is improved, and the emission is improved;
(4) equivalent fuel consumption control strategy
The control strategy converts the electric energy consumed by the power battery in the charging and discharging process into the energy consumed or stored by the auxiliary power unit, forms a total fuel consumption model of the system with the actual fuel consumption of the auxiliary power unit, calculates the minimum value of the model, and selects the point corresponding to the minimum value as the working point of the current auxiliary power unit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810909566.4A CN109141916B (en) | 2018-08-10 | 2018-08-10 | Electric automobile auxiliary power unit testing device and testing method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810909566.4A CN109141916B (en) | 2018-08-10 | 2018-08-10 | Electric automobile auxiliary power unit testing device and testing method |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN109141916A CN109141916A (en) | 2019-01-04 |
| CN109141916B true CN109141916B (en) | 2020-04-17 |
Family
ID=64792823
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810909566.4A Expired - Fee Related CN109141916B (en) | 2018-08-10 | 2018-08-10 | Electric automobile auxiliary power unit testing device and testing method |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN109141916B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110426631B (en) * | 2019-08-07 | 2022-02-22 | 哈尔滨理工大学 | New energy automobile power system composite testing device and testing method |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104502106A (en) * | 2014-11-24 | 2015-04-08 | 北京新能源汽车股份有限公司 | Power assembly test table for hybrid electric vehicle |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB9612932D0 (en) * | 1995-06-22 | 1996-08-21 | Glorywin Int Group Ltd | Battery controller |
| KR100527461B1 (en) * | 2003-02-07 | 2005-11-09 | 현대자동차주식회사 | Apparatus for testing auxiliary power for a series hybrid electric vehicle |
| JP4352339B2 (en) * | 2005-12-27 | 2009-10-28 | 株式会社デンソー | Rotating electric machine control device for hybrid vehicle |
| JP5501757B2 (en) * | 2007-02-20 | 2014-05-28 | パナソニック株式会社 | Power generation device and operation method thereof |
| CN201207021Y (en) * | 2007-12-27 | 2009-03-11 | 奇瑞汽车股份有限公司 | Testing rack for durability of power assembly for hybrid automobile |
-
2018
- 2018-08-10 CN CN201810909566.4A patent/CN109141916B/en not_active Expired - Fee Related
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104502106A (en) * | 2014-11-24 | 2015-04-08 | 北京新能源汽车股份有限公司 | Power assembly test table for hybrid electric vehicle |
Non-Patent Citations (2)
| Title |
|---|
| 基于虚拟电池技术的电动汽车充电设备测试系统;颜湘武等;《电力自动化设备》;20111110;第27-30页 * |
| 电动汽车增程器关键技术综述;何坚强等;《电源世界》;20161215;第39-41页 * |
Also Published As
| Publication number | Publication date |
|---|---|
| CN109141916A (en) | 2019-01-04 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN104163111B (en) | Battery-driven car compound energy based on two-way DC/DC increases journey system | |
| KR20030011284A (en) | System and method for optimal battery usage in electric and hybrid vehicles | |
| CN101052544A (en) | Battery control system for hybrid vehicle and method for controlling a hybrid vehicle battery | |
| CN104553838B (en) | Propulsion system | |
| CN112491107B (en) | Power supply system of pure electric vehicle crane and control method and control system thereof | |
| CN107733055B (en) | Charging system for vehicle-mounted power battery of oil-electricity hybrid power locomotive | |
| CN104890668A (en) | Control method for battery system of hybrid vehicle | |
| CN205097969U (en) | Electricity mixes electric automobile power battery and super capacitor driving system | |
| CN110745022A (en) | A multi-functional controller and new energy automobile for new energy automobile | |
| CN109141916B (en) | Electric automobile auxiliary power unit testing device and testing method | |
| CN106849784B (en) | DC electric driving device and electric equipment | |
| CN102801202B (en) | Automatic charging device of new energy electric automobile and control method of automatic charging device | |
| CN111003189A (en) | Power control system and method of hybrid unmanned aerial vehicle | |
| CN106356575B (en) | The charge control method of lead-acid accumulator in hybrid vehicle | |
| CN210669631U (en) | Hybrid power system and crane using same | |
| CN210835114U (en) | Energy-saving direct current fills electric pile detection device | |
| CN202906823U (en) | Control apparatus for controlling output voltage of generator | |
| CN111959293A (en) | Motor torque limit value calculation method of double-motor planet row hybrid drive system | |
| CN104986048B (en) | A kind of hybrid power automobile battery system | |
| CN203151194U (en) | A low-voltage storage battery charging device of a serial-parallel hybrid electric vehicle | |
| Breban et al. | Embedded electric power system with fuzzy-logic supervision for vehicular applications | |
| CN216819407U (en) | New energy power generation vehicle | |
| CN215204446U (en) | Energy supply system of new energy automobile | |
| CN202712955U (en) | Automatic charging device of new energy electric automobile | |
| CN220086959U (en) | DC micro-grid system of drilling machine |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20200417 Termination date: 20210810 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |