CN111749300B - 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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- CN111749300B CN111749300B CN202010603090.9A CN202010603090A CN111749300B CN 111749300 B CN111749300 B CN 111749300B CN 202010603090 A CN202010603090 A CN 202010603090A CN 111749300 B CN111749300 B CN 111749300B
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- 238000000034 method Methods 0.000 title claims description 10
- 230000001105 regulatory effect Effects 0.000 claims description 4
- 102100024452 DNA-directed RNA polymerase III subunit RPC1 Human genes 0.000 claims description 3
- 101000689002 Homo sapiens DNA-directed RNA polymerase III subunit RPC1 Proteins 0.000 claims description 3
- 238000005265 energy consumption Methods 0.000 abstract description 8
- 230000000694 effects Effects 0.000 abstract description 2
- 239000000463 material Substances 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 230000002035 prolonged effect Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000001276 controlling effect Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000004134 energy conservation Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 239000003562 lightweight material Substances 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
Classifications
-
- 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
-
- 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
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 motor controller low-voltage interface, and three-phase ends of the hydraulic motor are respectively connected with U, V, W pins of the hydraulic motor controller. The invention can effectively achieve the effect of saving energy consumption loss, prolongs the single-time charging working time, reduces the charging times, improves the working efficiency, prolongs the service life of the power battery, and indirectly saves the use cost of users.
Description
Technical Field
The invention relates to the technical field of intelligent control of new energy shovel machinery, in particular to an energy-saving control system for operation of an electric loader.
Background
Along with the national environmental protection requirement, new energy passenger cars and commercial vehicles are gradually popularized, new energy scooptrams are also primarily developed and manufactured, and the new energy is very high in requirements on cruising ability and energy consumption, so that the new energy is very necessary for controlling energy conservation and consumption reduction. At present, most of traditional electric devices are controlled by adopting double motors, wherein a hydraulic motor provides power for two parts of a steering hydraulic system and a working hydraulic system, and the defects are that:
1, for the steering system, when the hydraulic system does not work, the motor continuously outputs the maximum rotating speed for guaranteeing the normal operation of the steering system, so that the hydraulic motor continuously outputs the fixed rotating speed under the condition of no requirement, and serious energy consumption is wasted;
2, for working hydraulic systems, when different working conditions are adopted, the output curves of the motors only keep the same form when the materials are shoveled, and unnecessary waste is caused for large-size and light-weight materials and better working conditions;
both aspects cause the increase of energy consumption, lead to the battery duration shorter, frequent charge and discharge seriously influence battery life, reduce work efficiency and user's experience sense.
Disclosure of Invention
In order to solve the technical problems, 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; the oil outlet of the gear pump is connected with a priority valve; the first 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 hydraulic motor 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 motor controller low-voltage interface, and three-phase ends of the hydraulic motor are respectively connected with U, V, W pins of the hydraulic motor controller.
It is further: and 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+ pin of the hydraulic motor controller is connected with the positive electrode of the storage battery, and the BAT-pin is connected with the negative electrode of the storage battery;
the hydraulic motor controller CAN+ and CAN-are communicated with the angle sensor through a CAN bus, a 3 pin of the angle sensor is connected with the anode of the storage battery, and a 4 pin of the angle sensor is grounded;
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 whole vehicle VCU through a CAN bus; the multi-state switch is connected with AI1 and AI2 of the whole vehicle VCU.
The port P of the priority valve is connected with the 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 P port of the steering gear; and A, B ports of the steering gear are respectively connected with the steering oil cylinder I and the steering oil cylinder II.
An energy-saving control method for operation of an electric loader comprises the following steps:
(1) after the key is electrified to wake up the high-voltage system to be electrified, the multi-state switch is regulated;
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 the whole vehicle VCU;
(2) after receiving the input voltage signal of the multi-state switch, the VCU of the whole vehicle performs pattern curve matching, and the matching result is sent to the hydraulic motor controller through the CAN bus;
(3) 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 that the limitation of output power is realized.
It is further: when the working hydraulic system is not in operation,
the angle sensor detects the angular velocity of the steering wheel and sends the angular velocity 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, the LS port of the steering gear outputs pressure oil, the LS port of the steering gear is connected with the LS port of the priority valve, so that the valve core of the priority valve moves to the left, at the moment, the oil outlet of the gear pump outputs high-pressure oil, the oil outlet of the gear pump is connected to the P port of the steering gear through the CF port of the priority valve, and the A, B port of the steering gear supplies oil to the steering oil cylinder I and the steering oil cylinder II 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 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 in the cab, and is connected with the whole vehicle VCU through a hard wire.
The multi-state switch is in a heavy-load mode, the hydraulic motor rotates at full speed, and the motor characteristic parameters of the hydraulic motor are maintained.
The current of 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 a low-voltage interface of the motor controller and is transmitted to a display screen for display through a CAN bus.
Compared with the prior art, the invention has the beneficial effects that: the effect of saving energy consumption loss can be effectively achieved, the single-time charging working time 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: 1 storage battery, 2 angle sensor, 3 display screen, 4 multi-state switch, 5 hydraulic motor controller, 6 motor controller low-voltage interface, 7 hydraulic motor, 8 whole car VCU, 9 gear pump, 10 priority valve, 11 priority valve case 1, 12 steering gear, 13 steering cylinder I, 14 steering cylinder II.
Detailed Description
The invention will be further described with reference to specific examples.
Example 1
Referring to fig. 1, a power saving control system for electric loader operation is provided, wherein 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 with the port of the steering gear 12P; the A, B port of the steering gear 12 is respectively connected with the steering cylinder I13 and the steering cylinder II 14.
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;
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; an angle sensor 2 is installed between the steering wheel and the steering gear 12, the angle sensor 2 being used to detect the angular velocity of the steering wheel in real time;
CAN+ and 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 in the cab interior, and the multi-state switch 4 is connected with AI1 and AI2 of the whole vehicle VCU8 through hard wires;
the CAN+ and CAN-of the hydraulic motor controller 5 are connected with the display screen 3 through a CAN bus; the current of the port of the hydraulic motor controller 5U, V, W is transmitted to the display screen 3 for display through the CAN bus;
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 rotating speed of the hydraulic motor 7 is transmitted to the hydraulic motor controller 5 through the motor controller interface 6 and is transmitted to the display screen 3 for display through the CAN bus;
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 operation of an electric loader, based on the first embodiment, includes the following steps:
(1) after a key is electrified to wake up the high-voltage system to be electrified, the multi-state switch 4 is regulated;
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 whole vehicle VCU8; the multi-state switch 4 rotates the hydraulic motor 7 at full speed under the heavy load mode, so that the motor characteristic parameters of the hydraulic motor 7 are maintained;
(2) after receiving the voltage signal input by the multi-state switch 4, the whole-vehicle VCU8 performs pattern curve matching, and the matching result is sent to the hydraulic motor controller 5 through the CAN bus;
(3) 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 of the hydraulic motor controller, and the hydraulic motor is connected with the gear pump through a coupler to provide power, so that the limitation of output power is realized.
When the working hydraulic system is not in operation,
the angle sensor 2 detects the angular velocity of the steering wheel and sends the angular velocity 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, the LS port of the steering gear 12 outputs pressure oil, the LS port of the steering gear 12 is connected with the LS port of the priority valve 10, the valve core 11 of the priority valve is moved to the left, at the moment, the oil outlet of the gear pump 9 outputs high-pressure oil, the oil outlet of the gear pump is connected to the P port of the steering gear 12 through the CF port of the priority valve 10, and the ports A, B of the steering gear 12 supply oil to the steering oil cylinder I13 and the steering oil cylinder II 14 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 rotation speed.
In the embodiment, a steering wheel angular speed signal is introduced and is used as the input of a hydraulic motor controller, and the output rotating speed of the motor is regulated together with a working device part, so that the optimal output of energy consumption is ensured; meanwhile, an energy-saving mode switch is added, the full bucket load of different materials is divided into three states, and current is limited for a motor during shoveling operation, so that energy consumption utilization is maximized. The energy-saving mode, the motor rotating speed and the motor current can be displayed through a display screen. The invention can achieve the remarkable 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 embodiments of the present invention, other and further modifications may be made without departing from the principles of the invention, and such modifications are intended to be included within the scope of the invention.
Claims (5)
1. An energy-saving control method 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 hydraulic motor 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 the whole vehicle VCU (8) through a CAN bus, and the whole vehicle VCU (8) is connected with the 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 three-phase ends of the hydraulic motor (7) are respectively connected with U, V, W pins of the hydraulic motor controller (5);
the hydraulic motor controller (5) is connected with a display screen (3) through a CAN bus;
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) CAN+ and CAN-are communicated with the angle sensor (2) through a CAN bus, a 3 pin of the angle sensor (2) is connected with the positive electrode of the storage battery (1), and a 4 pin of the angle sensor (2) is grounded;
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 pressure interface (6) of the motor controller; the hydraulic motor (7) is mechanically connected with the gear pump (9) through a coupler;
the hydraulic motor controller (5) is in CAN+ and CAN-communication with the whole vehicle VCU (8) through a CAN bus; the multi-state switch (4) is connected with AI1 and AI2 of the whole vehicle VCU (8);
the method comprises the following steps:
(1) after a key is electrified to wake up the high-voltage system to be electrified, the multi-state switch (4) is regulated;
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 whole vehicle VCU (8);
(2) after receiving the voltage signal input by the multi-state switch (4), the whole-vehicle VCU (8) performs pattern curve matching, and the matching result is sent to the hydraulic motor controller (5) through the CAN bus;
(3) the hydraulic motor controller (5) adjusts the rotating speed of the hydraulic motor (7) by adjusting the current of an output port of the hydraulic motor controller U, V, W, so that the limitation of output power is realized;
when the working hydraulic system is not in operation,
the angle sensor (2) detects the angular velocity of the steering wheel, and sends the angular velocity 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, so that the output of the rotating speed of the hydraulic motor (7) is realized; when the steering wheel rotates, the LS port of the steering gear (12) outputs pressure oil, the LS port of the steering gear (12) is connected with the LS port of the priority valve (10) to enable the valve core (11) of the priority valve to move to the left, at the moment, the oil outlet of the gear pump (9) outputs high-pressure oil, the high-pressure oil is connected to the P port of the steering gear (12) through the CF port of the priority valve (10), and the A, B port of the steering gear (12) supplies oil to the steering oil cylinder I (13) and the steering oil cylinder II (14) 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.
2. The power saving control method for operation of an electric loader according to claim 1, wherein: the multi-state switch (4) is arranged in a cab, and the multi-state switch (4) is connected with the whole vehicle VCU (8) through a hard wire.
3. The power saving control method for operation of an electric loader according to claim 1, wherein: the multi-state switch (4) rotates at full speed under the heavy load mode, and the motor characteristic parameters of the hydraulic motor (7) are maintained.
4. The power saving control method for operation of an electric loader according to claim 1, wherein: the current of a U, V, W port of the hydraulic motor controller (5) is transmitted to the display screen (3) for display through the CAN bus; the rotating speed of the hydraulic motor (7) is transmitted to the hydraulic motor controller (5) through a motor controller low-voltage interface (6) and is transmitted to the display screen (3) for display through a CAN bus.
5. The power saving control method for operation of an electric loader according to claim 1, wherein: the port P of the priority valve (10) is connected with the oil outlet of the gear pump (9), and the port EF of the priority valve (10) is connected with the working hydraulic system; the CF port of the priority valve (10) is connected with the P port of the steering gear (12); the A, B port of the steering gear (12) is respectively connected with the steering oil cylinder I (13) and the steering oil cylinder II (14).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| 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 |
|---|---|---|---|
| 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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| Publication Number | Publication Date |
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| CN111749300A CN111749300A (en) | 2020-10-09 |
| CN111749300B true CN111749300B (en) | 2024-01-23 |
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| CN202010603090.9A Active CN111749300B (en) | 2020-06-29 | 2020-06-29 | Energy-saving control system and method for operation of electric loader |
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| CN111749300A (en) | 2020-10-09 |
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