CN220483097U - Hydrogen fuel forklift control system - Google Patents
Hydrogen fuel forklift control system Download PDFInfo
- Publication number
- CN220483097U CN220483097U CN202322134888.5U CN202322134888U CN220483097U CN 220483097 U CN220483097 U CN 220483097U CN 202322134888 U CN202322134888 U CN 202322134888U CN 220483097 U CN220483097 U CN 220483097U
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- circuit
- controller
- contactor
- battery
- output end
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- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 title claims abstract description 51
- 229910052739 hydrogen Inorganic materials 0.000 title claims abstract description 51
- 239000001257 hydrogen Substances 0.000 title claims abstract description 51
- 239000000446 fuel Substances 0.000 title claims abstract description 46
- HEZMWWAKWCSUCB-PHDIDXHHSA-N (3R,4R)-3,4-dihydroxycyclohexa-1,5-diene-1-carboxylic acid Chemical compound O[C@@H]1C=CC(C(O)=O)=C[C@H]1O HEZMWWAKWCSUCB-PHDIDXHHSA-N 0.000 claims abstract description 27
- 238000007599 discharging Methods 0.000 claims abstract description 6
- 238000006243 chemical reaction Methods 0.000 abstract description 4
- 238000000034 method Methods 0.000 description 4
- 238000010926 purge Methods 0.000 description 3
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
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- Fuel Cell (AREA)
- Electric Propulsion And Braking For Vehicles (AREA)
Abstract
The utility model discloses a hydrogen fuel forklift control system which comprises a power battery, a pile, a BMS controller, an FCU controller, a storage battery and a whole car controller, wherein the output end of the pile is connected with a high-voltage conversion DCDC to form a first circuit, the first circuit and the power battery are connected in parallel to form a second circuit, the output end of the second circuit is connected with the battery DCDC, the output end of the battery DCDC is respectively connected with the positive electrode end of the storage battery controlled by the BMS controller, the FCU controller and an MCF relay, and one side of a key switch is connected with the input end of the second circuit through a coil of the key relay. The utility model solves the problem that the hydrogen fuel cell cannot normally power down due to FCU failure or adhesion of a discharging contactor, and simultaneously solves the problems of system information and failure display of the upper and lower hydrogen fuel cells.
Description
Technical Field
The utility model relates to the technical field of hydrogen fuel forklifts, in particular to a hydrogen fuel forklift control system.
Background
At present, a low voltage 12V battery is used to start to complete the hydrogen-fuelled forklift power up, so the controlled 12V power supply of the key loop powers the FCU and BMS which complete the wake-up. However, the key-operated power supply of the conventional electric fork-lift truck controller of 48V or 80V system is generally 48V or 80V. If the key circuit directly controls the FCU and the BMS to be powered on, the hydrogen fuel cell outputs high voltage power of 48V or 80V for the key port of the forklift controller. According to the scheme, the power-on and power-off of the hydrogen fuel cell can be realized, but if the FCU fails or the discharging contactor of the hydrogen fuel cell is stuck, the high-voltage power of the hydrogen fuel cell cannot be cut off, so that the forklift cannot power-off.
Disclosure of Invention
The present utility model aims to solve at least one of the technical problems in the related art to some extent. Therefore, an object of the present utility model is to provide a hydrogen fuel forklift control system, which solves the problem that the hydrogen fuel cell cannot be powered down normally due to FCU failure or adhesion of a discharging contactor, and solves the problems of system information and failure display of the power-on and power-off hydrogen fuel cell.
According to the hydrogen fuel forklift control system provided by the utility model, the hydrogen fuel forklift control system comprises a power battery, a pile, a BMS controller, an FCU controller, a storage battery and a whole car controller, wherein the output end of the pile is connected with a high-voltage conversion DCDC to form a first circuit, the first circuit and the power battery are connected in parallel to form a second circuit, the output end of the second circuit is connected with a battery DCDC, the output end of the battery DCDC is respectively connected with the positive ends of the BMS controller, the FCU controller and the storage battery which is controlled by the FCU controller, the positive end of the battery DCDC is sequentially connected with the BMS controller and the KEY end of the FCU controller through an MCF relay, a fuse second emergency power-off switch and a KEY switch, the KEY switch is connected with the input end of the second circuit through a coil of the KEY relay, the A2-Y port of the battery is respectively connected with the positive end of the storage battery controlled by the FCU controller, the MCF relay is connected with the output end of the whole car controller through a coil of the KEY relay, and the output end of the whole car controller is respectively connected with the output end of the complete car controller through a coil 6, and the signal of the complete car controller is connected with the output end of the complete car controller through a coil 6.
Preferably, the BOP auxiliary module comprises a BOP auxiliary module, wherein a positive electrode contactor K4 and a pre-charging contactor K5 are arranged at the positive electrode end of the BOP auxiliary module, the positive electrode contactor K4 and the pre-charging contactor K5 are connected in parallel to form a third circuit, the positive electrode end of the BOP auxiliary module is connected with the output end of the second circuit through the third circuit, and the negative electrode end of the BOP auxiliary module is connected with the input end of the second circuit.
Preferably, the electric vehicle instrument module comprises an electric vehicle instrument module, wherein the power input end of the electric vehicle instrument module is connected with the output end of the second circuit through a switch of the discharging contactor K1.
Preferably, the integrated circuit comprises an integrated DCDC, wherein the input end of the integrated DCDC is connected with the output end of the second circuit, and the C port of the integrated DCDC is connected with the output end of the second circuit.
Preferably, the first circuit and the power battery are connected with a fourth circuit near the positive end side of the power battery, the fourth circuit comprises a positive electrode contactor K1 and a pre-charging contactor K2, the positive electrode contactor K1 and the pre-charging contactor K2 are connected in parallel to form the fourth circuit, and the first circuit and the power battery are connected with a negative electrode contactor K3 near the negative end side of the power battery.
Preferably, a first fuse is arranged at the outlet of the second circuit, and a second fuse is arranged between the positive electrode of the output end of the battery DCDC and the emergency power-off switch.
The beneficial effects of the utility model are as follows:
(1) The problems that a hydrogen fuel cell cannot be powered down normally and a whole vehicle end comprises a controller and a whole vehicle DCDC cannot be powered down due to faults of an FCU controller and a BMS controller or contact adhesion of an anode contactor K1 and a cathode contactor K3 are solved;
(2) The whole vehicle end and the hydrogen fuel cell end are separated in the power-on process, so that the power-on load of the hydrogen fuel cell can be reduced, and the hydrogen fuel cell is powered down;
(3) The key switch is adopted to control the power-on and power-off of the hydrogen fuel cell system and the operation of the key relay, and the key circuit on the whole car side aims at key voltage power supply signals of different hydrogen fuel cells, so that the key control circuit on the whole car side can be unchanged. The key signal adopts a 12V power signal, the key signal of a hydrogen fuel cell at the later stage can also adopt key power signals of 24V, 48V, 80V and the like, the key control loops at the side of the whole car are the same, and the power-on of the key signal with multiple voltage power supplies can be realized;
(4) In order to facilitate the user to know the state of the hydrogen fuel cell and the whole vehicle in time, an instrument and a hydrogen fuel cell system are adopted to control power on and off simultaneously, if the fault condition is the above, the power supply of the whole vehicle controller can be disconnected in time, the traction motor and the pump motor are ensured to be free of working, the safety of the whole vehicle can be ensured, and the fault of the hydrogen fuel cell system can be fed back to the instrument;
(5) The instrument and the hydrogen fuel cell system are powered on and off simultaneously, and in the normal power-on process of the hydrogen fuel cell, the instrument can display the startup self-checking information of the hydrogen fuel cell system, such as low-temperature startup, and the residual preheating time. The hydrogen fuel cell is powered off, and the instrument displays the fault of the hydrogen fuel cell system or the residual purging time in the shutdown process, so that the user can know the state of the vehicle and the battery conveniently.
Drawings
In the drawings:
fig. 1 is a schematic circuit diagram of a hydrogen-fueled forklift control system according to the present utility model.
In the figure: 1-positive contactor K1, 2-pre-charge contactor K2, 3-positive contactor K4, 4-BOP auxiliary module, 5-fuse one, 6-whole car contactor K6, 7-key relay, 8-whole car controller, 9-traction motor, 10-whole car DCDC, 11-pump motor, 12-key switch, 13-emergency power off switch, 14-fuse two, 15-storage battery, 16-FCU controller, 17-BMS controller, 18-negative contactor K3, 19-power battery, 20-galvanic pile, 21-high voltage conversion DCDC, 22-battery DCDC, 23-MCF relay.
Detailed Description
Referring to fig. 1, a hydrogen fuel forklift control system comprises a power battery 19, a pile 20, a BMS controller 17, an FCU controller 16, a storage battery 15 and a whole vehicle controller 8, wherein the output end of the pile 20 is connected with a high-voltage conversion DCDC21 to form a first circuit, the first circuit and the power battery 19 are connected in parallel to form a second circuit, the output end of the second circuit is connected with a battery DCDC22, the output end of the battery DCDC22 is respectively connected with the input end of the storage battery 15 which is controlled to be on-off by the BMS controller 17, the FCU controller 16 and the MCF relay 23, the MCF relay 23 is controlled by the FCU controller 16, the positive electrode of the battery DCDC22 is sequentially connected with the FCU controller 16 and a KEY port of the BMS controller 17 through the MCF relay 23, an emergency power-off switch 13 and a KEY switch 12, one side of the KEY switch 12 is connected with the input end of the second circuit through a coil of the KEY relay 7, the A2-KEY port of the whole vehicle controller 8 is connected with the output end of the second circuit through a switch of the KEY relay 7, the output end of the whole vehicle controller 8 is connected with the output end of the motor controller 8 through the coil of the KEY relay 8 and the whole vehicle controller 8 and the output end of the motor controller 8 is respectively connected with the output end of the whole vehicle controller 8 through the KEY controller 6 and the KEY controller 8;
further, the hydrogen fuel forklift control system comprises a BOP auxiliary module 4, wherein an anode end of the BOP auxiliary module 4 is provided with an anode contactor K4 and a pre-charging contactor K5, the anode contactor K4 and the pre-charging contactor K5 are connected in parallel to form a third circuit, the anode end of the BOP auxiliary module 4 is connected with the output end of the second circuit through the third circuit, and the cathode end of the BOP auxiliary module 4 is connected with the input end of the second circuit;
further, the hydrogen fuel forklift control system comprises a whole vehicle instrument module, wherein the power input end of the whole vehicle instrument module is connected with the output end of the second circuit through a switch of the discharging contactor K1;
further, the hydrogen fuel forklift control system comprises a whole vehicle DCDC10, wherein the input end of the whole vehicle DCDC10 is connected with the output end of the second circuit, and the C port of the whole vehicle DCDC10 is connected with the output end of the second circuit;
further, a fourth circuit is connected to the first circuit and the power battery 19 near the positive end of the power battery 19, the fourth circuit comprises a positive contactor K1 and a pre-charging contactor K2, the positive contactor K1 and the pre-charging contactor K2 are connected in parallel to form a fourth circuit, and a negative contactor K3 is connected to the first circuit and the power battery 19 near the negative end of the power battery 19; the outlet of the second circuit is provided with a first fuse 5, and a second fuse 14 is arranged between the positive electrode of the output end of the battery DCDC22 and the emergency power-off switch 13.
In operation, the hydrogen fuel forklift is powered on and can be closed by the key switch 12, and meanwhile, the key relay 7 is powered on to attract the key relay contacts. The 12V power supply of the battery 15 wakes up the FCU controller 16 and the BMS controller 17, and the FCU controller controls the C port of the battery DCDC22 to be powered on and the MCF relay to operate, so that the FCU controller 16 and the BMS controller 17 perform a self-test and operate a start-up procedure. The BMS controller 17 controls the pre-charging contactor K2 and the negative electrode contactor K3 to be attracted, the FCU controller 16 controls the pre-charging contactor K5 to be attracted for pre-charging, the BMS controller 17 controls the positive electrode contactor K1 and the negative electrode contactor K3 to be attracted after pre-charging is completed, the battery DCDC22 converts a 48V or 80V power supply of the power battery 19 into a 12V power supply to be output for the FCU controller 16, the BMS controller 17 and the storage battery 15, the FCU controller 16 controls the positive electrode contactor K4 to be attracted for powering on the BOP auxiliary module 4 of the hydrogen fuel cell system, and the hydrogen fuel cell system completes high-voltage power-on output. Because the KEY switch 12 is closed, the KEY relay 7 is electrified in a coil and contacts are attracted, after the hydrogen fuel cell system completes high-voltage electrified output, the A2-KEY port of the whole vehicle controller 8 is electrified, the whole vehicle controller 8 performs self-checking, and meanwhile completes the attraction of the whole vehicle contactor K6, so that the whole vehicle controller 8 and the whole vehicle DCDC10 work electrically, the whole vehicle controller 8 controls the traction motor 9 and the pump motor 11 to work according to user input, and the instrument is connected to the front end of the whole vehicle contactor K6, so that after the anode contactor K1 and the cathode contactor K3 of the hydrogen fuel cell system are attracted, the instrument can complete communication with the FCU controller 16 and the BMS controller 17 in real time to display information and faults of the hydrogen fuel cell system. Meanwhile, after the whole vehicle controller 8 is powered on, communication with the FCU controller 16 and the BMS controller 17 is completed, and user information input, information such as a power limit instruction, a shutdown instruction and the like and fault instructions are interacted. Meanwhile, the FCU controller 16 can detect the voltage of the storage battery terminal 15, control the working state of the MCF relay 23, and ensure that the voltage of the storage battery 15 is in a reasonable and normal range.
The hydrogen fuel forklift can be powered down by switching off the KEY switch 12 or switching off the emergency power-off switch 13, the KEY relay 7 is powered down by a wire package, and the contacts are switched off, so that the A2-KEY port of the whole car controller 8 is powered down, the A1 port of the whole car controller 8 is not powered down, the whole car contactor K6 is powered down, and the contacts are switched off, so that the whole car controller 8, the whole car DCDC10, the instrument and other whole car ends are not powered up by high voltage power. Meanwhile, the KEY port KEY of the FCU controller 16 is powered off, the FCU controller 16 executes a shutdown purge program of the hydrogen fuel cell system, and the purge time and intensity can be dynamically checked and controlled according to the ambient temperature and the state of the electric pile. After the FCU controller 16 performs the purge, the FCU controller 16 controls the battery DCDC22 enable port C in the hydrogen fuel cell system to have no input and the MCF relay to be turned off, so that the battery DCDC22 stops working and the MCF relay is turned off, the BMS controller 17 and the FCU controller 16 are powered off, and the hydrogen fuel cell system is powered off and stopped.
Claims (6)
1. A hydrogen fuel forklift control system, characterized in that: the intelligent power supply system comprises a power battery (19), a pile (20), a BMS controller (17), an FCU controller (16), a storage battery (15) and a whole vehicle controller (8), wherein the power battery (19) is connected with the output end of the pile (20) to form a first circuit, the first circuit is connected with the power battery (19) in parallel to form a second circuit, the output end of the second circuit is connected with a battery DCDC (22), the output end of the battery DCDC (22) is respectively connected with the positive end of the storage battery (15) which is connected with the BMS controller (17), the FCU controller (16) and is controlled by an MCF relay (23) controlled by the FCU controller (16), the positive end of the battery DCDC (22) is sequentially connected with an emergency fuse switch (13) and a KEY switch (12) through the MCF relay (23), the emergency fuse two (14) and the KEY switch (12) through the input end of the FCU controller (16) and the KEY switch (7) through the KEY switch (7), the coil of the A1 port control whole vehicle contactor K6 (6) of the whole vehicle controller (8) is connected with the input end of the second circuit, the B+ port of the whole vehicle controller (8) is connected with the output end of the second circuit through the switch of the whole vehicle contactor K6 (6), and the signal output end of the whole vehicle controller (8) is respectively connected with a traction motor (9) and a pump motor (11).
2. A hydrogen fuelled forklift control system as claimed in claim 1, wherein: including BOP auxiliary module (4), the positive pole end of BOP auxiliary module (4) is provided with positive pole contactor K4 (3) and pre-charge contactor K5, positive pole contactor K4 (3) with pre-charge contactor K5 parallel connection constitutes the third circuit, the positive pole end of BOP auxiliary module (4) is passed through the third circuit with the output of second circuit is connected, the negative pole end of BOP auxiliary module (4) with the input of second circuit is connected.
3. A hydrogen fuelled forklift control system as claimed in claim 1, wherein: the intelligent electric vehicle instrument module comprises an entire vehicle instrument module, wherein a power input end of the entire vehicle instrument module is connected with an output end of the first circuit through a switch of the discharging contactor K1 (1).
4. A hydrogen fuelled forklift control system as claimed in claim 1, wherein: the intelligent control system comprises a whole DCDC (10), wherein a power input end of the whole DCDC (10) is connected with an output end of the second circuit, and an enabling port C of the whole DCDC (10) is connected with the output end of the second circuit.
5. A hydrogen fuelled forklift control system as claimed in claim 1, wherein: the first circuit with power battery (19) is close to power battery (19) positive terminal one side is connected with the fourth circuit, the fourth circuit includes positive electrode contactor K1 (1) and pre-charge contactor K2 (2), positive electrode contactor K1 (1) with pre-charge contactor K2 (2) parallel connection constitutes the fourth circuit, first circuit with power battery (19) is close to power battery (19) negative terminal one side is connected with negative electrode contactor K3 (18).
6. A hydrogen fuelled forklift control system as claimed in claim 1, wherein: and a first fuse (5) is arranged at the outlet of the second circuit, and a second fuse (14) is arranged between the positive electrode of the output end of the battery DCDC (22) and the emergency power-off switch (13).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322134888.5U CN220483097U (en) | 2023-08-08 | 2023-08-08 | Hydrogen fuel forklift control system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322134888.5U CN220483097U (en) | 2023-08-08 | 2023-08-08 | Hydrogen fuel forklift control system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN220483097U true CN220483097U (en) | 2024-02-13 |
Family
ID=89839925
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202322134888.5U Active CN220483097U (en) | 2023-08-08 | 2023-08-08 | Hydrogen fuel forklift control system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN220483097U (en) |
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2023
- 2023-08-08 CN CN202322134888.5U patent/CN220483097U/en active Active
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