CN116815863A - Hood lifting and battery locking control system and electric engineering machine - Google Patents
Hood lifting and battery locking control system and electric engineering machine Download PDFInfo
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- CN116815863A CN116815863A CN202310794922.3A CN202310794922A CN116815863A CN 116815863 A CN116815863 A CN 116815863A CN 202310794922 A CN202310794922 A CN 202310794922A CN 116815863 A CN116815863 A CN 116815863A
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- hood
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- lifting
- battery locking
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- 238000006073 displacement reaction Methods 0.000 claims description 8
- 238000010276 construction Methods 0.000 claims description 5
- 239000003921 oil Substances 0.000 description 63
- 239000010720 hydraulic oil Substances 0.000 description 6
- 230000007935 neutral effect Effects 0.000 description 3
- 230000001960 triggered effect Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 230000000630 rising effect Effects 0.000 description 1
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Abstract
The invention relates to an electric engineering machine, and in order to solve the problem that the battery locking and the hood closing of the existing electric engineering machine are not associated, the invention constructs a hood lifting and battery locking control system and the electric engineering machine, wherein the control system comprises a hood lifting control electromagnetic valve, a battery locking control electromagnetic valve, a controller, a hood lifting control switch, a battery locking control switch and a hood gesture detector; the controller is used for outputting corresponding control currents of lifting, descending and stopping the hood to the hood lifting control electromagnetic valve according to the state signal of the hood lifting control switch, and outputting corresponding control currents of locking, unlocking and stopping the battery to the battery locking control electromagnetic valve according to the state signal of the battery locking control switch when receiving the hood lifting complete state signal output by the hood posture detector. According to the invention, misoperation of unlocking the battery lock when the hood is in the closed state can be avoided.
Description
Technical Field
The present invention relates to an electric construction machine, and more particularly, to a hood lifting and battery locking control system and an electric construction machine.
Background
Power cells equipped in electric construction machines such as electric loaders, electric excavators, and the like are generally arranged on a vehicle body in a detachable quick-change manner, and shielded with a cover such as a hood for protection, and are replaced when the power cells are exhausted.
Maintenance and repair and replacement of the power battery require opening of the hood. The hood is of great mass and needs power auxiliary devices such as hydraulic cylinders for opening and closing the hood. The power battery has huge mass, and the power battery is installed on engineering machinery and needs to be firmly locked, and a lock pin for locking the power battery is driven to stretch and retract by a hydraulic oil cylinder.
The locking and unlocking of the power battery on the existing electric engineering machinery are mutually independent from the lifting and opening and closing operation of the hood, and the situation that the power battery is unlocked when the hood is not lifted and opened exists, so that the power battery is unlocked and the risk that the power battery is overturned due to the fact that the machine is moved is caused.
Disclosure of Invention
The invention aims to solve the technical problem that the battery locking and the hood closing of the existing electric engineering machinery are not associated, and provides a hood lifting and battery locking control system and an electric engineering machinery, so that the closing action of the hood is logically associated with whether the battery is locked or not, and accidents are avoided.
The technical scheme for achieving the purpose of the invention is as follows: the engine cover lifting and battery locking control system comprises an engine cover lifting oil cylinder for lifting the engine cover, an engine cover lifting control electromagnetic valve for controlling the engine cover lifting oil cylinder, a battery locking oil cylinder for locking a power battery, a battery locking control electromagnetic valve for controlling the battery locking oil cylinder, an oil pump connected with the battery locking control electromagnetic valve and an oil inlet of the engine cover lifting control electromagnetic valve, and a motor for driving the oil pump; the control system is characterized by further comprising a controller electrically connected with the hood lifting control electromagnetic valve and the battery locking control electromagnetic valve, a hood lifting control switch electrically connected with the controller, a battery locking control switch and a hood gesture detector for detecting the opening and closing states of the hood;
the controller is used for outputting corresponding control currents of lifting, descending and stopping the hood to the hood lifting control electromagnetic valve according to the state signal of the hood lifting control switch, and outputting corresponding control currents of locking, unlocking and stopping the battery to the battery locking control electromagnetic valve according to the state signal of the battery locking control switch when the hood lifting complete state signal output by the hood posture detector is received.
According to the invention, when the hood is in the hood lifting complete state, the battery can be unlocked and locked, and when the hood is not opened or is not completely opened, the battery can not be unlocked, so that the risk caused by misoperation is prevented.
In the hood lifting and battery locking control system, a hydraulic control one-way valve which is communicated with the battery locking oil cylinder in the forward direction is connected between a large cavity of the battery locking oil cylinder and a working oil port of the battery locking control electromagnetic valve, and a reverse conduction control end of the hydraulic control one-way valve is communicated with a small cavity of the battery locking oil cylinder.
In the hood lifting and battery locking control system, the battery locking control electromagnetic valve and the hood lifting control electromagnetic valve are three-position four-way valves, an oil inlet of at least one valve of the battery locking control electromagnetic valve and the hood lifting control electromagnetic valve is connected with an oil inlet end of an overflow valve, and an oil outlet end of the overflow valve is connected with an oil return pipeline.
In the hood lifting and battery locking control system, two working oil ports of the hood lifting control electromagnetic valve are respectively connected with a large cavity and a small cavity of a hood lifting oil cylinder; two working oil ports of the battery locking control electromagnetic valve are respectively connected with a large cavity and a small cavity of the battery locking oil cylinder.
In the hood lifting and battery locking control system, the start-stop control device of the motor is electrically connected with the controller, and the controller outputs a motor start-stop control signal to the start-stop control device of the motor when receiving a hood lifting or hood descending state signal output by the hood lifting control switch or when receiving a hood lifting complete state signal output by the hood posture detector and receiving a battery locking and battery unlocking state signal.
In the hood lifting and battery locking control system, when the controller outputs the hood lifting control current or the hood descending control current, the controller outputs the hood stopping control current and the motor stopping control signal to the motor starting and stopping control device after receiving the hood lifting complete state signal or the hood descending complete state signal output by the hood gesture detector.
In the hood lifting and battery locking control system, the control system further comprises a battery state detector for detecting a battery locking state, and the controller outputs a locking stop control current and a motor stop control signal to a start-stop control device of the motor when receiving a battery locking complete state signal or a battery unlocking complete state signal output by the battery state detector when outputting a battery locking control current or a battery unlocking control current.
The technical scheme for achieving the purpose of the invention is as follows: an electric engineering machine is constructed, which is characterized by comprising the hood lifting and battery locking control system. The electric construction machine may be an excavator, a loader, or the like.
Compared with the prior art, in the invention, the locking and unlocking operation of the power battery is related to the state of the hood, and the unlocking operation of the battery locking can not be performed when the hood is not opened, so that the risk caused by misoperation is prevented.
Drawings
Fig. 1 is a schematic diagram of the hood lifting and battery lock control system of the present invention.
Part names and serial numbers in the figure:
the hydraulic oil tank 1, the oil pump 2, the overflow valve 3, the battery locking control electromagnetic valve 4, the hydraulic control one-way valve 5, the battery locking oil cylinder 6, the battery state detector 7, the hood posture detector 8, the hood lifting oil cylinder 9, the hood lifting control electromagnetic valve 10, the hood lifting control switch 11, the controller 12, the battery locking control switch 13 and the motor 14.
Detailed Description
The following describes specific embodiments with reference to the drawings.
Fig. 1 illustrates the principle of a hood lifting and battery locking control system in an embodiment of the present invention.
As shown in fig. 1, the hood lifting and battery locking control system includes a hood lifting cylinder 9 for hood lifting, a hood lifting control solenoid valve 10 for controlling the hood lifting cylinder 9, a battery locking cylinder 6 for locking and fixing a power battery, a battery locking control solenoid valve 4 for controlling the battery locking cylinder 6, an oil pump 2 connected to oil inlets of the battery locking control solenoid valve 4 and the hood lifting control solenoid valve 10, a motor 14 driving the oil pump 2, a controller 12 electrically connected to the hood lifting control solenoid valve 10 and the battery locking control solenoid valve 4, a hood lifting control switch 11 electrically connected to the controller 12, a battery locking control switch 13, a hood posture detector 8 for detecting an opening and closing state of the hood, and a battery state detector 7 for detecting whether the battery is locked.
The oil suction port of the oil pump 2 is connected with the hydraulic oil tank 1 through an oil filter and a pipeline, and hydraulic oil is sucked from the hydraulic oil tank 1. The pump port of the oil pump 2 is connected with the oil inlets of the battery locking control electromagnetic valve 4 and the hood lifting control electromagnetic valve 10 through a one-way valve and a pipeline, and the oil return ports of the battery locking control electromagnetic valve 4 and the hood lifting control electromagnetic valve 10 are connected with the hydraulic oil tank 1 through a pipeline.
One of the working oil ports of the battery locking control electromagnetic valve 4 is connected with a forward conduction oil inlet of the hydraulic control one-way valve 5, a forward conduction oil outlet of the hydraulic control one-way valve 5 is connected with a large cavity of the battery locking oil cylinder 6, and the other working oil port of the battery locking control electromagnetic valve 4 is simultaneously connected with a reverse conduction control oil port of the hydraulic control one-way valve 5 and a small cavity of the battery locking oil cylinder 6.
Two working oil ports of the hood lifting control electromagnetic valve 10 are respectively connected with a large cavity and a small cavity of the hood lifting oil cylinder 9.
The hood lifting control electromagnetic valve 10 and the battery locking control electromagnetic valve 4 are three-position four-way valves. When the hood lifting control electromagnetic valve 10 is positioned at the left position, an oil inlet of the hood lifting control electromagnetic valve is communicated with a large cavity of the hood lifting oil cylinder 9; when the engine cover lifting cylinder is positioned at the right position, an oil inlet of the engine cover lifting cylinder is communicated with a cylinder small cavity of the engine cover lifting cylinder 9; when the engine cover lifting cylinder is in the middle position, the oil inlet of the engine cover lifting cylinder is blocked from the engine cover lifting cylinder 9. When the battery locking control electromagnetic valve 4 is positioned at the left position, an oil inlet of the battery locking control electromagnetic valve is communicated with a large cavity of the battery locking oil cylinder 6; when the device is at the right position, the oil inlet of the device is communicated with the small oil cylinder cavity of the battery locking oil cylinder 6; when the device is in the middle position, the oil inlet of the device is blocked from the battery locking oil cylinder 6.
The relief valve 3 is provided in either one of the hood lifting control solenoid valve 10 and the battery lock control solenoid valve 4, or the relief valve 3 is provided in both valves. The overflow valve 3 is connected between the oil inlet end and the oil return end of the valve, and when the two valves of the hood lifting control electromagnetic valve 10 and the battery locking control electromagnetic valve 4 are both in the middle position, the overflow valve 3 automatically opens overflow due to the continuous rising of the pump port pressure of the oil pump 2.
The hood lifting control switch 11 and the battery locking control switch 13 each have three states corresponding to three operation electric signals recognizable by the controller 12. The three operation electric signals of the hood lifting control switch 11 are a hood lifting state signal of a hood lifting operation, a hood lowering state signal of a hood lowering operation, and a hood stopping state signal of a hood stopping operation, respectively. The three operation electric signals of the battery lock control switch 13 are a battery lock state signal of a battery lock operation, a battery unlock state signal of a battery unlock operation, and a lock stop state signal of a lock stop operation, respectively.
The hood posture detector 8 may be an angle sensor for detecting the turning angle of the hood, or may be a displacement sensor for detecting the telescopic length of the hood lift cylinder 9, and the controller 12 may determine whether the hood is completely opened or completely closed by an angle signal of the angle sensor or a displacement signal of the displacement sensor. The hood posture detector 8 may also be two proximity switches, which are triggered when the hood is completely opened and completely closed, respectively, and the controller 12 determines the state of the hood according to the state signals of the proximity switches.
The battery state detector 7 may be a displacement sensor for detecting the telescopic length of the battery locking cylinder 6, and the controller 12 may determine whether the battery is locked or unlocked completely according to the displacement signal of the displacement sensor. The battery state detector 7 may also be two proximity switches, which are triggered when the battery locking cylinder 6 is fully extended and the battery locking cylinder 6 is fully retracted, respectively, and the controller 12 determines the battery locking or unlocking state according to the state signal of the proximity switch.
The controller 12 is configured to output control currents corresponding to the hood lifting, the hood lowering, and the hood stopping to the hood lifting control solenoid valve 10 according to the state signal of the hood lifting control switch 11. When receiving the hood lifting complete state signal output by the hood gesture detector 8, the controller 12 outputs corresponding control currents of battery locking, battery unlocking and locking stopping to the battery locking control electromagnetic valve 4 according to the state signal of the battery locking control switch 13.
The operator operates the hood lifting control switch 11 to send a hood lifting state signal of a hood lifting operation, a hood lowering state signal of a hood lowering operation, and a hood stopping state signal of a hood stopping operation to the controller 12. Upon receipt of the hood lifting state signal and the hood lowering state signal, the controller 12 outputs a motor start control signal to the start-stop control device of the motor 14, and simultaneously outputs a hood lifting control current and a hood lowering control current to the hood lifting control solenoid valve 10, respectively. The motor 14 rotates and drives the oil pump 2, and the oil pump 2 outputs pressure oil. The hood lifting control solenoid valve 10 is correspondingly positioned at the left and right positions, the hood lifting cylinder 9 correspondingly performs the extending and retracting actions, and the hood correspondingly performs the lifting and lowering operations.
When receiving the hood lifting complete state signal or the hood lowering complete state signal output from the hood posture detector 8, the controller 12 outputs a hood stop control current and a motor stop control signal to the start-stop control device of the motor 14, and the hood lifting control solenoid valve 10 is reversed to be in the neutral position, and the hood lifting cylinder 9 stops telescoping. The motor 14 stops rotating, and the oil pump 2 stops outputting the pressure oil.
When the hood stop state signal is received, the controller 12 outputs a hood stop control current to the start-stop control device of the motor 14, the hood stop control current is normally zero, the hood lifting control solenoid valve 10 is reversed to be in the neutral position, and the hood lifting cylinder 9 stops telescoping. The controller 12 may output a motor stop control signal to the start-stop control device of the motor 14 at the same time when receiving the hood stop state signal, or may output a motor stop control signal to the start-stop control device of the motor 14 when not receiving the hood lifting state signal, the hood lowering state signal, the battery locking state signal, and the battery unlocking state signal for a predetermined time, so that the motor is stopped.
When the controller 12 receives the battery locking state signal and the battery unlocking state signal of the battery locking control switch 13, whether the hood is lifted completely is judged by the signal output by the hood gesture detector 8, if the hood gesture detector 8 outputs a hood lifting complete state signal, the controller 12 outputs corresponding battery locking control current and battery unlocking control current to the battery locking control electromagnetic valve 4 according to the state signal of the battery locking control switch 13, the battery locking control electromagnetic valve 4 is correspondingly positioned at the left position or the right position, and the battery locking oil cylinder 6 correspondingly performs extension or retraction motion to realize locking fixation or unlocking motion of the battery.
The controller 12 also outputs a motor start control signal to a start-stop control device of the motor 14 when receiving a hood lifting complete state signal output by the hood posture detector 8 and receiving a battery locking and battery unlocking state signal, and the motor starts to drive the oil pump 2 to work, and the oil pump 2 outputs pressure oil.
When the controller 12 receives the battery lock complete state signal or the battery unlock complete state signal output by the battery state detector 7 when outputting the battery lock control current or the battery unlock control current, the controller 12 outputs a lock stop control current (normally zero current), the battery lock control solenoid valve 4 is accordingly in the neutral position, and the battery lock cylinder 6 stops the telescopic action to maintain the current lock state or unlock state of the battery.
When the controller 12 outputs the locking stop control current after outputting the battery locking control current and the battery unlocking control current, it may output a motor stop control signal to the start-stop control device of the motor 14 at the same time, or output a motor stop control signal to the start-stop control device of the motor when the hood lifting state signal, the hood lowering state signal, the battery locking state signal, and the battery unlocking state signal are not received within a predetermined time, so that the motor is stopped.
The embodiment also discloses an electric engineering machine which can be an electric excavator, an electric loader and the like and is provided with the hood lifting and battery locking control system.
Claims (10)
1. The hood lifting and battery locking control system comprises a hood lifting oil cylinder for lifting a hood, a hood lifting control electromagnetic valve for controlling the hood lifting oil cylinder, a battery locking oil cylinder for locking a power battery, a battery locking control electromagnetic valve for controlling the battery locking oil cylinder, an oil pump connected with the battery locking control electromagnetic valve and an oil inlet of the hood lifting control electromagnetic valve, and a motor for driving the oil pump; the control system is characterized by further comprising a controller electrically connected with the hood lifting control electromagnetic valve and the battery locking control electromagnetic valve, a hood lifting control switch electrically connected with the controller, a battery locking control switch and a hood gesture detector for detecting the opening and closing states of the hood;
the controller is used for outputting corresponding control currents of lifting, descending and stopping the hood to the hood lifting control electromagnetic valve according to the state signal of the hood lifting control switch, and outputting corresponding control currents of locking, unlocking and stopping the battery to the battery locking control electromagnetic valve according to the state signal of the battery locking control switch when the hood lifting complete state signal output by the hood posture detector is received.
2. The hood lifting and battery locking control system according to claim 1, wherein a hydraulic control one-way valve which is conducted forward in the direction of the battery locking oil cylinder is connected between a large cavity of the battery locking oil cylinder and a working oil port of the battery locking control electromagnetic valve, and a reverse conduction control end of the hydraulic control one-way valve is communicated with a small cavity of the battery locking oil cylinder.
3. The hood lifting and battery locking control system according to claim 1, wherein the battery locking control solenoid valve and the hood lifting control solenoid valve are three-position four-way valves, an oil inlet of at least one valve of the battery locking control solenoid valve and the hood lifting control solenoid valve is connected with an oil inlet end of an overflow valve, and an oil outlet end of the overflow valve is connected with an oil return pipeline.
4. The hood lifting and battery locking control system according to claim 3, wherein two working oil ports of the hood lifting control solenoid valve are connected with a large cavity and a small cavity of the hood lifting cylinder respectively; two working oil ports of the battery locking control electromagnetic valve are respectively connected with a large cavity and a small cavity of the battery locking oil cylinder.
5. The hood lifting and battery locking control system according to any one of claims 1 to 4, wherein the start-stop control device of the motor is electrically connected to the controller, and the controller outputs a motor start-stop control signal to the start-stop control device of the motor upon receiving a hood lifting or hood lowering state signal outputted from the hood lifting control switch or upon receiving a hood lifting complete state signal outputted from the hood posture detector and receiving a battery locking and battery unlocking state signal.
6. The hood lifting and battery locking control system according to any one of claims 1 to 4, wherein the controller outputs a hood stop control current and a motor stop control signal to the start-stop control device of the motor upon receiving the hood lifting complete state signal or the hood lowering complete state signal output from the hood posture detector when outputting the hood lifting control current or the hood lowering control current.
7. The hood lifting and battery lock control system according to claim 6, wherein the hood posture detector is at least one of an angle sensor for detecting a hood turning angle, a displacement sensor for detecting a hood lifting cylinder telescopic length, and a proximity switch for triggering when the hood is opened completely and the lowering is closed completely, respectively.
8. The hood lifting and battery lock control system according to any one of claim 1, wherein the control system further comprises a battery state detector for detecting a battery lock state, the controller outputting a lock stop control current and a motor stop control signal to a start-stop control device of the motor upon receiving a battery lock complete state signal or a battery unlock complete state signal output from the battery state detector upon outputting a battery lock control current or a battery unlock control current.
9. The hood lift and battery lock control system of claim 8, wherein the battery status detector is at least one of a displacement sensor for detecting a telescopic length of the hood lift cylinder and a proximity switch for triggering when the hood is opened completely and the lowering is closed completely, respectively.
10. An electric construction machine characterized by having the hood lifting and battery locking control system according to any one of claims 1 to 9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310794922.3A CN116815863A (en) | 2023-06-30 | 2023-06-30 | Hood lifting and battery locking control system and electric engineering machine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310794922.3A CN116815863A (en) | 2023-06-30 | 2023-06-30 | Hood lifting and battery locking control system and electric engineering machine |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN116815863A true CN116815863A (en) | 2023-09-29 |
Family
ID=88127276
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202310794922.3A Pending CN116815863A (en) | 2023-06-30 | 2023-06-30 | Hood lifting and battery locking control system and electric engineering machine |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN116815863A (en) |
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2023
- 2023-06-30 CN CN202310794922.3A patent/CN116815863A/en active Pending
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