CN111749300A - Energy-saving control system and method for operation of electric loader - Google Patents
Energy-saving control system and method for operation of electric loader Download PDFInfo
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- CN111749300A CN111749300A CN202010603090.9A CN202010603090A CN111749300A CN 111749300 A CN111749300 A CN 111749300A CN 202010603090 A CN202010603090 A CN 202010603090A CN 111749300 A CN111749300 A CN 111749300A
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- 238000005265 energy consumption Methods 0.000 abstract description 8
- 230000000694 effects Effects 0.000 abstract description 2
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- 230000002035 prolonged effect Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02F—DREDGING; SOIL-SHIFTING
- E02F9/00—Component parts of dredgers or soil-shifting machines, not restricted to one of the kinds covered by groups E02F3/00 - E02F7/00
- E02F9/20—Drives; Control devices
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02F—DREDGING; SOIL-SHIFTING
- E02F9/00—Component parts of dredgers or soil-shifting machines, not restricted to one of the kinds covered by groups E02F3/00 - E02F7/00
- E02F9/20—Drives; Control devices
- E02F9/22—Hydraulic or pneumatic drives
-
- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02F—DREDGING; SOIL-SHIFTING
- E02F9/00—Component parts of dredgers or soil-shifting machines, not restricted to one of the kinds covered by groups E02F3/00 - E02F7/00
- E02F9/20—Drives; Control devices
- E02F9/22—Hydraulic or pneumatic drives
- E02F9/2221—Control of flow rate; Load sensing arrangements
-
- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02F—DREDGING; SOIL-SHIFTING
- E02F9/00—Component parts of dredgers or soil-shifting machines, not restricted to one of the kinds covered by groups E02F3/00 - E02F7/00
- E02F9/20—Drives; Control devices
- E02F9/22—Hydraulic or pneumatic drives
- E02F9/225—Control of steering, e.g. for hydraulic motors driving the vehicle tracks
-
- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02F—DREDGING; SOIL-SHIFTING
- E02F9/00—Component parts of dredgers or soil-shifting machines, not restricted to one of the kinds covered by groups E02F3/00 - E02F7/00
- E02F9/20—Drives; Control devices
- E02F9/22—Hydraulic or pneumatic drives
- E02F9/2264—Arrangements or adaptations of elements for hydraulic drives
-
- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02F—DREDGING; SOIL-SHIFTING
- E02F9/00—Component parts of dredgers or soil-shifting machines, not restricted to one of the kinds covered by groups E02F3/00 - E02F7/00
- E02F9/20—Drives; Control devices
- E02F9/22—Hydraulic or pneumatic drives
- E02F9/2264—Arrangements or adaptations of elements for hydraulic drives
- E02F9/2267—Valves or distributors
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- Engineering & Computer Science (AREA)
- Mining & Mineral Resources (AREA)
- Civil Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Structural Engineering (AREA)
- Physics & Mathematics (AREA)
- Fluid Mechanics (AREA)
- Operation Control Of Excavators (AREA)
Abstract
The invention discloses an energy-saving control system for operation of an electric loader, and belongs to the technical field of intelligent control of new energy shovel loading machinery. Comprises a gear pump and a hydraulic motor; the oil outlet of the gear pump is connected with a priority valve; one oil way of the priority valve is connected with a working hydraulic system, and the other oil way of the priority valve is connected with a steering gear; the angle sensor is used for detecting the angular speed of the steering wheel in real time; the angle sensor is communicated with the hydraulic motor controller through a CAN bus; the hydraulic motor controller is communicated with a whole vehicle VCU through a CAN bus, and the whole vehicle VCU is connected with a multi-state switch; the hydraulic motor controller is connected with the hydraulic motor through a low-voltage interface of the motor controller, and the three-phase end of the hydraulic motor is respectively connected with an U, V, W pin of the hydraulic motor controller. The invention can effectively achieve the effect of saving energy consumption loss, prolong the working time of single charging, reduce the charging times, improve the working efficiency, prolong the service life of the power battery and indirectly save the use cost of users.
Description
Technical Field
The invention relates to the technical field of intelligent control of new energy shovel loader machines, in particular to an energy-saving control system for operation of an electric loader.
Background
With the requirements of the national environmental protection, new energy passenger vehicles and commercial vehicles are gradually popularized, new energy shoveling machines are also preliminarily researched and manufactured, and the requirements of the new energy on the cruising ability and the energy consumption are very high, so that the control on energy conservation and consumption reduction is very necessary. At present, the couple of motor control is adopted to traditional denso major part, and wherein hydraulic motor provides and turns to hydraulic system and work hydraulic system two parts power, and its shortcoming lies in:
1, for a steering system, when a hydraulic system does not work, a motor continuously outputs the maximum rotating speed which ensures the normal operation of the steering system, so that the hydraulic motor also continuously outputs a fixed rotating speed under the condition of no requirement, and the energy consumption is seriously wasted;
2, for a working hydraulic system, under different working conditions and when shoveled materials are different, the output curve of the motor only keeps the same form, and unnecessary waste is also caused for materials with large volume and light weight and better working conditions;
the two aspects all cause the increase of energy consumption, lead to battery duration shorter, and frequent charge-discharge seriously influences battery life, reduces work efficiency and user's experience and feels.
Disclosure of Invention
In order to solve the technical problem, the invention provides an energy-saving control system for the operation of an electric loader.
The invention is realized by the following technical scheme: an energy-saving control system for the operation of an electric loader comprises a gear pump and a hydraulic motor for driving the gear pump to work; an oil outlet of the gear pump is connected with a priority valve; one oil way of the priority valve is connected with a working hydraulic system, and the other oil way of the priority valve is connected with a steering gear; the steering gear is connected with a steering oil cylinder I and a steering oil cylinder II;
the device also comprises an angle sensor and a hydraulic motor controller;
the angle sensor is arranged between the steering wheel and the steering gear and is used for detecting the angular speed of the steering wheel in real time; the angle sensor is communicated with the hydraulic motor controller through a CAN bus;
the hydraulic motor controller is communicated with a whole vehicle VCU through a CAN bus, and the whole vehicle VCU is connected with a multi-state switch;
the hydraulic motor controller is connected with the hydraulic motor through a low-voltage interface of the motor controller, and the three-phase end of the hydraulic motor is respectively connected with U, V, W pins of the hydraulic motor controller.
It further comprises the following steps: the hydraulic motor controller CAN + and CAN-are connected with a display screen through a CAN bus.
The hydraulic motor controller adopts C160;
the BAT-stitch of the hydraulic motor controller is connected with the positive electrode of the storage battery, and the BAT-stitch is connected with the negative electrode of the storage battery;
the hydraulic motor controller CAN + and CAN-are communicated with an angle sensor through a CAN bus, 3 pins of the angle sensor are connected with the anode of the storage battery, and 4 pins of the angle sensor are bonded;
the SIN-P, SIN-N, COS-P, COS-N, EXC-P, EXC-N pin of the hydraulic motor controller is connected with the hydraulic motor through the low-pressure interface of the motor controller; the hydraulic motor is mechanically connected with the gear pump through a coupler.
The hydraulic motor controller CAN + and CAN-are communicated with the VCU of the whole vehicle through a CAN bus; the multi-state switch is connected with AI1 and AI2 of the VCU of the whole vehicle.
The port P of the priority valve is connected with an oil outlet of the gear pump, and the port EF of the priority valve is connected with the working hydraulic system; the CF port of the priority valve is connected with the port P of the steering gear; and an A, B port of the steering gear is respectively connected with a steering oil cylinder I and a steering oil cylinder II.
An energy-saving control method for the operation of an electric loader comprises the following steps:
firstly, after a key is electrified to wake up a high-voltage system to be electrified, a multi-state switch is adjusted;
the multi-state switch comprises a light load mode, a medium load mode and a heavy load mode; the resistance values of the multi-state switches corresponding to different modes are different, and the multi-state switches output different voltages to a vehicle VCU;
after receiving the input voltage signal of the multi-state switch, the VCU of the whole vehicle performs matching of the mode curve, and the matching result is sent to the hydraulic motor controller through the CAN bus;
and thirdly, the hydraulic motor controller adjusts the rotating speed of the hydraulic motor by adjusting the current of the U, V, W output port of the hydraulic motor controller, so as to limit the output power.
It further comprises the following steps: when the working hydraulic system is not in operation,
the angle sensor detects the angular speed of the steering wheel and sends the angular speed to the hydraulic motor controller through the CAN bus, and the hydraulic motor controller adjusts U, V, W port current according to a preset relation curve to realize the output of the rotating speed of the hydraulic motor; when the steering wheel rotates, pressure oil is output from an LS port of the steering gear, the LS port of the steering gear is connected with an LS port of the priority valve, a valve core of the priority valve is moved to the left position, high-pressure oil is output from an oil outlet of the gear pump at the moment and is connected to a P port of the steering gear through a CF port of the priority valve, and ports A, B of the steering gear respectively supply oil to a steering oil cylinder I and a steering oil cylinder II, so that the purpose of steering is achieved;
when the working hydraulic system and the steering hydraulic system are simultaneously operated,
the pilot pressure signal of the working hydraulic system and the angular speed of the steering system are simultaneously input to the hydraulic motor controller, and the hydraulic motor controller adjusts the hydraulic motor according to the larger output rotating speed.
The multi-state switch is arranged on the inner decoration of the cab and is connected with the VCU of the whole vehicle through a hard wire.
And in a heavy-load mode, the multi-state switch enables the hydraulic motor to rotate at full speed, and keeps the motor characteristic parameters of the hydraulic motor.
The current at the port of the hydraulic motor controller U, V, W is transmitted to a display screen for display through a CAN bus; the rotating speed of the hydraulic motor is transmitted to the hydraulic motor controller through the low-voltage interface of the motor controller and is transmitted to the display screen through the CAN bus to be displayed.
Compared with the prior art, the invention has the beneficial effects that: the effect of saving energy consumption loss can be effectively achieved, the working time of single charging is prolonged, the charging times are reduced, the working efficiency is improved, meanwhile, the service life of the power battery is prolonged, and the use cost of a user is indirectly saved.
Drawings
FIG. 1 is a schematic diagram of the present invention;
in the figure: the device comprises a storage battery 1, an angle sensor 2, a display screen 3, a multi-state switch 4, a hydraulic motor controller 5, a motor controller 6, a low-pressure interface 7, a hydraulic motor 8, a VCU of the whole vehicle, a gear pump 9, a priority valve 10, a priority valve spool 11, a steering gear 12, a steering oil cylinder I13 and a steering oil cylinder II 14.
Detailed Description
The present invention will be further described with reference to the following examples.
Example one
Referring to fig. 1, in an energy-saving control system for operation of an electric loader, a port P of a priority valve 10 is connected with an oil outlet of a gear pump 8, and a port EF of the priority valve 10 is connected with a working hydraulic system; the CF port of the priority valve 10 is connected to the port of the diverter 12P; an A, B port of the steering gear 12 is respectively connected with a steering oil cylinder I13 and a steering oil cylinder II 14.
The hydraulic motor controller 5 adopts C160;
a BAT + pin of the hydraulic motor controller 5 is connected with the positive electrode of the storage battery 1, and the BAT-pin is connected with the negative electrode of the storage battery 1;
CAN + and CAN-of the hydraulic motor controller 5 are communicated with the angle sensor 2 through a CAN bus, 3 pins of the angle sensor 2 are connected with the anode of the storage battery 1, and 4 pins of the angle sensor 2 are grounded; the angle sensor 2 is arranged between the steering wheel and the steering gear 12, and the angle sensor 2 is used for detecting the angular speed of the steering wheel in real time;
the CAN + and the CAN-of the hydraulic motor controller 5 are communicated with the VCU8 of the whole vehicle through a CAN bus; the multi-state switch 4 is arranged on the interior trim of a cab, and the multi-state switch 4 is connected with AI1 and AI2 of a VCU8 of the whole vehicle through hard wires;
the CAN + and the CAN-of the hydraulic motor controller 5 are connected with a display screen 3 through a CAN bus; the current at the port of the hydraulic motor controller 5U, V, W is transmitted to the display screen 3 through the CAN bus to be displayed;
the SIN-P, SIN-N, COS-P, COS-N, EXC-P, EXC-N pin of the hydraulic motor controller 5 is connected with the hydraulic motor 7 through the motor controller low-voltage interface 6; the rotating speed of the hydraulic motor 7 is transmitted to the hydraulic motor controller 5 through the motor controller low-voltage interface 6 and is transmitted to the display screen 3 through the CAN bus to be displayed;
the hydraulic motor 7 is mechanically connected with the gear pump 9 through a coupler; the three-phase ends of the hydraulic motor 7 are respectively connected with U, V, W pins of the hydraulic motor controller 5.
Example two
An energy-saving control method for the operation of an electric loader is based on the first embodiment, and comprises the following steps:
firstly, after a key is electrified to wake up a high-voltage system to be electrified, a multi-state switch 4 is adjusted;
the multi-state switch 4 comprises a light load mode, a medium load mode and a heavy load mode; the resistance values of the multi-state switches 4 corresponding to different modes are different, and the multi-state switches 4 output different voltages to the vehicle VCU 8; under the heavy-load mode, the multi-state switch 4 rotates the hydraulic motor 7 at full speed, and keeps the motor characteristic parameters of the hydraulic motor 7;
after receiving the input voltage signal of the multi-state switch 4, the VCU8 of the whole vehicle performs matching of a mode curve, and a matching result is sent to the hydraulic motor controller 5 through the CAN bus;
and thirdly, the hydraulic motor controller 5 adjusts the rotating speed of the hydraulic motor 7 by adjusting the current of the U, V, W output port, and the hydraulic motor is connected with the gear pump through the coupler to provide power, so that the output power is limited.
When the working hydraulic system is not in operation,
the angle sensor 2 detects the angular speed of the steering wheel and sends the angular speed to the hydraulic motor controller 5 through the CAN bus, and the hydraulic motor controller 5 adjusts U, V, W port current according to a preset relation curve to realize the output of the rotating speed of the hydraulic motor 7; when the steering wheel rotates, pressure oil is output from an LS port of the steering gear 12, the LS port of the steering gear 12 is connected with an LS port of the priority valve 10, a valve core 11 of the priority valve moves to the left position, high-pressure oil is output from an oil outlet of the gear pump 9 at the moment and is connected to a P port of the steering gear 12 through a CF port of the priority valve 10, and oil is supplied to a steering oil cylinder I13 and a steering oil cylinder II 14 through ports of the steering gear 12A, B respectively, so that the steering purpose is achieved.
When the working hydraulic system and the steering hydraulic system are simultaneously operated,
the pilot pressure signal of the working hydraulic system and the angular velocity of the steering system are simultaneously input to the hydraulic motor controller 5, and the hydraulic motor controller 5 adjusts the hydraulic motor 7 according to the larger output rotating speed.
In the embodiment, a steering wheel angular speed signal is introduced to be used as the input of a hydraulic motor controller, and the steering wheel angular speed signal and a working device part jointly regulate the output rotating speed of a motor, so that the optimal output of energy consumption is ensured; meanwhile, an energy-saving mode switch is added, three states are divided according to the full bucket load of different materials, the current is limited to the motor during the shovel loading operation, and the energy consumption utilization maximization is achieved. The energy-saving mode, the motor rotating speed and the motor current can be displayed through the display screen. The invention can achieve the obvious benefits of saving energy, reducing consumption, improving working efficiency and prolonging the service life of the battery.
While the foregoing is directed to the preferred embodiment of the present invention, several modifications may be made without departing from the spirit of the invention, and the scope of the invention is to be determined from the following claims.
Claims (10)
1. An energy-saving control system for the operation of an electric loader comprises a gear pump (9) and a hydraulic motor (7) for driving the gear pump (9) to work; an oil outlet of the gear pump (9) is connected with a priority valve (10); one oil way of the priority valve (10) is connected with a working hydraulic system, and the other oil way of the priority valve (10) is connected with a steering gear (12); the steering gear (12) is connected with a steering oil cylinder I (13) and a steering oil cylinder II (14);
the method is characterized in that:
the device also comprises an angle sensor (2) and a hydraulic motor controller (5);
the angle sensor (2) is arranged between the steering wheel and the steering gear (12), and the angle sensor (2) is used for detecting the angular speed of the steering wheel in real time; the angle sensor (2) is communicated with the hydraulic motor controller (5) through a CAN bus;
the hydraulic motor controller (5) is communicated with a whole vehicle VCU (8) through a CAN bus, and the whole vehicle VCU (8) is connected with a multi-state switch (4);
the hydraulic motor controller (5) is connected with the hydraulic motor (7) through a motor controller low-voltage interface (6), and the three-phase end of the hydraulic motor (7) is respectively connected with U, V, W pins of the hydraulic motor controller (5).
2. The power-saving control system for work of an electric loader according to claim 1, characterized in that: the hydraulic motor controller (5) and the CAN-are connected with a display screen (3) through a CAN bus.
3. The power-saving control system for work of an electric loader according to claim 2, characterized in that: the hydraulic motor controller (5) adopts C160;
the BAT + pin of the hydraulic motor controller (5) is connected with the positive electrode of the storage battery (1), and the BAT-pin is connected with the negative electrode of the storage battery (1);
the hydraulic motor controller (5) is communicated with the angle sensor (2) through a CAN bus, 3 pins of the angle sensor (2) are connected with the anode of the storage battery (1), and 4 pins of the angle sensor (2) are bonded;
the SIN-P, SIN-N, COS-P, COS-N, EXC-P, EXC-N pin of the hydraulic motor controller (5) is connected with the hydraulic motor (7) through the low-pressure interface (6) of the motor controller; the hydraulic motor (7) is mechanically connected with the gear pump (9) through a coupler.
4. The power-saving control system for work of an electric loader according to claim 3, characterized in that: the hydraulic motor controller (5) is communicated with the VCU (8) of the whole vehicle through a CAN bus, wherein CAN + and CAN-are arranged in the vehicle; the multi-state switch (4) is connected with AI1 and AI2 of a VCU (8) of the whole vehicle.
5. The power-saving control system for work of an electric loader according to claim 4, characterized in that: a port P of the priority valve (10) is connected with an oil outlet of the gear pump (8), and a port EF of the priority valve (10) is connected with a working hydraulic system; the CF port of the priority valve (10) is connected with the P port of the diverter (12); and an A, B port of the steering gear (12) is respectively connected with a steering oil cylinder I (13) and a steering oil cylinder II (14).
6. An energy-saving control method for the operation of an electric loader, which adopts the energy-saving control system for the operation of the electric loader of any one of claims 4 or 5, is characterized by comprising the following steps:
firstly, after a key is electrified to wake up a high-voltage system to be electrified, a multi-state switch (4) is adjusted;
the multi-state switch (4) comprises a light load mode, a medium load mode and a heavy load mode; the resistance values of the multi-state switches (4) corresponding to different modes are different, and the multi-state switches (4) output different voltages to a vehicle VCU (8);
secondly, after receiving the input voltage signal of the multi-state switch (4), the VCU (8) of the whole vehicle performs matching of a mode curve, and a matching result is sent to the hydraulic motor controller (5) through a CAN bus;
and thirdly, the hydraulic motor controller (5) adjusts the rotating speed of the hydraulic motor (7) by adjusting the current of the U, V, W output port, so as to limit the output power.
7. The power-saving control method for work of an electric loader according to claim 6, characterized in that:
when the working hydraulic system is not in operation,
the angle sensor (2) detects the angular speed of the steering wheel, the angular speed is sent to the hydraulic motor controller (5) through the CAN bus, and the hydraulic motor controller (5) adjusts U, V, W port current according to a preset relation curve to realize the output of the rotating speed of the hydraulic motor (7); when a steering wheel rotates, pressure oil is output from an LS port of a steering gear (12), the LS port of the steering gear (12) is connected with an LS port of a priority valve (10), a valve core (11) of the priority valve is moved to the left position, high-pressure oil is output from an oil outlet of a gear pump (9) at the moment, the high-pressure oil is connected to a P port of the steering gear (12) through a CF port of the priority valve (10), and oil is respectively supplied to a steering oil cylinder I (13) and a steering oil cylinder II (14) from a port A, B of the steering gear (12), so that the purpose of steering is achieved;
when the working hydraulic system and the steering hydraulic system are simultaneously operated,
the pilot pressure signal of the working hydraulic system and the angular speed of the steering system are simultaneously input into the hydraulic motor controller (5), and the hydraulic motor controller (5) adjusts the hydraulic motor (7) according to the larger output rotating speed.
8. The power-saving control method for work of an electric loader according to claim 7, characterized in that: the multi-state switch (4) is installed on the inner decoration of the cab, and the multi-state switch (4) is connected with a VCU (8) of the whole vehicle through a hard wire.
9. The power-saving control method for work of an electric loader according to claim 7, characterized in that: and the multi-state switch (4) rotates the hydraulic motor (7) at full speed in a heavy-load mode, and keeps the motor characteristic parameters of the hydraulic motor (7).
10. The power-saving control method for work of an electric loader according to claim 7, characterized in that: the current of the U, V, W port of the hydraulic motor controller (5) is transmitted to the display screen (3) through the CAN bus to be displayed; the rotating speed of the hydraulic motor (7) is transmitted to the hydraulic motor controller (5) through the motor controller low-voltage interface (6) and is transmitted to the display screen (3) through the CAN bus to be displayed.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202010603090.9A CN111749300B (en) | 2020-06-29 | 2020-06-29 | Energy-saving control system and method for operation of electric loader |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202010603090.9A CN111749300B (en) | 2020-06-29 | 2020-06-29 | Energy-saving control system and method for operation of electric loader |
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| CN111749300A true CN111749300A (en) | 2020-10-09 |
| CN111749300B CN111749300B (en) | 2024-01-23 |
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| CN111749300B (en) | 2024-01-23 |
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