CN113103979A - Power supply circuit of refrigerating unit system - Google Patents
Power supply circuit of refrigerating unit system Download PDFInfo
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- CN113103979A CN113103979A CN202110394180.6A CN202110394180A CN113103979A CN 113103979 A CN113103979 A CN 113103979A CN 202110394180 A CN202110394180 A CN 202110394180A CN 113103979 A CN113103979 A CN 113103979A
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60R—VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR
- B60R16/00—Electric or fluid circuits specially adapted for vehicles and not otherwise provided for; Arrangement of elements of electric or fluid circuits specially adapted for vehicles and not otherwise provided for
- B60R16/02—Electric or fluid circuits specially adapted for vehicles and not otherwise provided for; Arrangement of elements of electric or fluid circuits specially adapted for vehicles and not otherwise provided for electric constitutive elements
- B60R16/03—Electric or fluid circuits specially adapted for vehicles and not otherwise provided for; Arrangement of elements of electric or fluid circuits specially adapted for vehicles and not otherwise provided for electric constitutive elements for supply of electrical power to vehicle subsystems or for
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60H—ARRANGEMENTS OF HEATING, COOLING, VENTILATING OR OTHER AIR-TREATING DEVICES SPECIALLY ADAPTED FOR PASSENGER OR GOODS SPACES OF VEHICLES
- B60H1/00—Heating, cooling or ventilating [HVAC] devices
- B60H1/32—Cooling devices
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60P—VEHICLES ADAPTED FOR LOAD TRANSPORTATION OR TO TRANSPORT, TO CARRY, OR TO COMPRISE SPECIAL LOADS OR OBJECTS
- B60P3/00—Vehicles adapted to transport, to carry or to comprise special loads or objects
- B60P3/20—Refrigerated goods vehicles
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T10/00—Road transport of goods or passengers
- Y02T10/80—Technologies aiming to reduce greenhouse gasses emissions common to all road transportation technologies
- Y02T10/88—Optimized components or subsystems, e.g. lighting, actively controlled glasses
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- Charge And Discharge Circuits For Batteries Or The Like (AREA)
- Electric Propulsion And Braking For Vehicles (AREA)
Abstract
The invention discloses a power supply circuit of a refrigerating unit system, which comprises: the system comprises a power battery, a charging system, an all-in-one controller, a vehicle control unit, a first power supply, a refrigeration control switch and a relay. The first power supply is used for outputting a first voltage; one end of the refrigeration control switch is connected with the output end of the first power supply; one end of a coil of the relay is connected with the other end of the refrigeration control switch, the other end of the coil is connected with the vehicle control unit, the resistor of the relay is connected with the coil in parallel, one end of a normally open contact of the relay is connected with the output end of the first power supply, the other end of the normally open contact is connected with the first connector, and the first connector can output the voltage required by the refrigeration unit controller. The power supply circuit of the invention does not need to disassemble and assemble the instrument panel, is convenient for connecting the refrigerating unit system into the circuit, and is very convenient and safe.
Description
Technical Field
The present invention relates to the field of circuit design technology, and more particularly, to a power supply circuit for a refrigeration unit system.
Background
The new energy cold-chain logistics automobile is different from the traditional fuel cold-chain logistics automobile, aiming at a power supply circuit of a refrigerating unit system, the traditional cold-chain logistics automobile cargo compartment refrigerating unit can convert mechanical energy of an engine into electric energy for power supply, and the new energy cold-chain logistics automobile cargo compartment refrigerating unit obtains the electric energy from a power battery for refrigeration. FIG. 1 is a schematic diagram of a new energy cold chain logistics automobile in which the portion excluding the refrigeration unit system and the cargo compartment is the class II chassis of the automobile and the refrigeration unit system and the cargo compartment are the upper-mounted systems of the automobile, according to the prior art.
With the continuous popularization of new energy automobiles in cities in China and the huge demand of new energy commercial vehicles for cold chain transportation, more new energy cold chain logistics automobiles exist in the current market, but refrigerating compartment refrigerating unit systems of different manufacturers are different, a 12V/24V power supply (shown in figure 2) needs to be obtained from the whole automobile in some cases, and a unified refrigerating unit system power supply interface cannot be reserved for two types of chassis provided for automobile refitting factory production by many automobile manufacturing enterprises in some cases (shown in figure 5). Fig. 2 is a refrigeration unit system according to the prior art, which includes a refrigeration unit and a refrigeration unit controller, the refrigeration unit controller needs to be connected with a 12V/24V power supply, and the refrigeration unit obtains high voltage from a multi-in-one controller. For the refrigerator chiller system shown in FIG. 2, the inventor found that the refitting factory needs to disassemble the dashboard of the cabin of the original car (class II chassis) to access the 12V/24V circuit system of the whole car from the ignition switch, or the storage battery to access the circuit system of the whole car to get 12V/24V power. The two circuit wiring modes are respectively shown in fig. 3 and fig. 4. The system composed of the power battery and the charging system, the all-in-one controller and the vehicle control unit in the new energy automobile in fig. 3 and 4 is used for providing high voltage electricity for the refrigerating unit. The inventors have found that the above approach has the following disadvantages: automobile manufacturers do not reserve special interfaces for refrigerating unit systems, the workload of assembling and disassembling instrument panels is increased, the manufacturing cost is increased, and the after-sale maintenance is inconvenient; the number of wire harnesses at the ignition switch is large, and a modified factory is easy to connect wrong wire harnesses; the system power consumption of each refrigerating unit is different, and the ignition switch is additionally provided with a load without evaluation, so that the safety of the ignition switch is easy to burn out; the current protection cannot be carried out on the refrigerating unit system from the whole vehicle layer without a whole vehicle low-voltage wire harness fuse box or special fuse; the refrigerating unit system technical capability of each factory refrigeration compartment is different, the quiescent current of some products is overlarge, and the electric quantity of a storage battery can be consumed quickly after the whole automobile is stopped and powered off, so that the automobile cannot be started next time.
Additionally, FIG. 5 is another refrigeration chiller system according to the prior art. Fig. 6 is a power supply circuit of the alternative refrigeration unit system. The refrigerating unit in the refrigerating unit system only needs to obtain a high-voltage power supply from a system consisting of a power battery and a charging system in a new energy automobile, an all-in-one controller and a vehicle control unit, and then the high-voltage power supply is converted into a 12V/24V power supply required by the refrigerating unit controller through an internal DC-DC conversion module, and the high-voltage power supply directly supplies power to the refrigerating unit, so that the other refrigerating unit system does not have the defects, but the inventor finds that the high-voltage strategies of the two refrigerating unit systems shown in the figures 2 and 5 are unreasonable, and the refrigerating unit is reflected in the following scenes. Scene one: when the new energy automobile is charged, high voltage cannot be supplied to the refrigerating unit, and the refrigerating unit cannot work. Scene two: the refrigerating unit can work during charging, but after a user pulls out a key, an ignition switch is turned off, and a refrigerating unit controller loses a 12V/24V power supply and cannot work. Scene three: the all-in-one controller is always in a state of supplying power to the refrigerating unit when the new energy automobile is charged all night and for a long time, and potential safety hazards exist.
The information disclosed in this background section is only for enhancement of understanding of the general background of the invention and should not be taken as an acknowledgement or any form of suggestion that this information forms the prior art already known to a person skilled in the art.
Disclosure of Invention
The invention aims to provide a power supply circuit of a refrigerating unit system, which is convenient to connect the refrigerating unit system into the circuit without dismounting an instrument panel, is very convenient and safe, and can disconnect the power supply system of the refrigerating unit by disconnecting a switch of the refrigerating unit after the whole vehicle is powered off, so that the whole vehicle cannot generate static current consumption.
In order to achieve the above object, the present invention provides a power supply circuit of a refrigeration unit system, the refrigeration unit system includes a refrigeration unit controller and a refrigeration unit, the power supply circuit includes: power battery and charging system, unification controller, vehicle control unit more, wherein, unify the controller more with the high-pressure input port of refrigerating unit links to each other for provide the required voltage of refrigerating unit, vehicle control unit with unify the controller more and power battery and charging system all link to each other, power battery and charging system with unify the controller more and link to each other, supply circuit still includes: the refrigeration system comprises a first power supply, a refrigeration control switch and a relay. The first power supply is used for outputting a first voltage; one end of the refrigeration control switch is connected with the output end of the first power supply; one end of a coil of the relay is connected with the other end of the refrigeration control switch, the other end of the coil is connected with the vehicle control unit, the resistor of the relay is connected with the coil in parallel, one end of a normally open contact of the relay is connected with the output end of the first power supply, the other end of the normally open contact is connected with the first connector, and the first connector can output the voltage required by the refrigeration unit controller.
Based on the same inventive concept, in an embodiment, there is also provided a power supply circuit of a refrigeration unit system, where the refrigeration unit system includes a refrigeration unit controller and a refrigeration unit, and the power supply circuit includes: power battery and charging system, unification controller, vehicle control unit more, wherein, unify the controller more with the high-pressure input port of refrigerating unit links to each other for provide the required voltage of refrigerating unit, vehicle control unit with unify the controller more and power battery and charging system all link to each other, power battery and charging system with unify the controller more and link to each other, supply circuit still includes: the refrigeration system comprises a first power supply, a refrigeration control switch, a fuse and a relay. A first power supply for outputting a first voltage; one end of the refrigeration control switch is connected with the output end of the first power supply; one end of the fuse is connected with the output end of the first power supply; one end of a coil of the relay is connected with the other end of the refrigeration control switch, the other end of the coil is connected with the vehicle control unit, the resistor of the relay is connected with the coil in parallel, one end of a normally open contact of the relay is connected with the other end of the fuse, the other end of the normally open contact is connected with a first connector, and the first connector can output voltage required by the refrigeration unit controller.
In an embodiment of the present invention, the power battery and charging system in the power supply circuit of the refrigeration unit system includes: the system comprises a power battery unit, a battery high-voltage distribution unit, a battery low-voltage control unit and a quick charging interface. The power battery unit is provided with a first communication module; the battery high-voltage power distribution unit is electrically connected with the power battery unit and comprises a main negative contactor, a quick charging contactor and a second communication module; the battery low-voltage control unit is electrically connected with the battery high-voltage power distribution unit and comprises a third communication module and a fourth communication module, wherein the first communication module, the second communication module and the third communication module are connected and are used for internal communication of the power battery and the charging system; and the quick charging interface is connected with the battery low-voltage control unit, a quick charging contactor in the battery high-voltage power distribution unit and the vehicle control unit. Among the power supply circuit the all-in-one controller with battery high voltage distribution unit links to each other, the all-in-one controller includes: the device comprises a control module, an auxiliary drive contactor, a first DC-DC module and a fifth communication module. The auxiliary drive contactor is connected with the control module; the first DC-DC module is connected with the control module and the auxiliary drive contactor; the fifth communication module is connected with the control module, the vehicle control unit in the power supply circuit comprises a sixth communication module and a seventh communication module, wherein the sixth communication module is connected with the fourth communication module and used for realizing communication between the vehicle control unit and the battery low-voltage control unit, and the seventh communication module is connected with the fifth communication module and used for realizing communication between the vehicle control unit and the all-in-one controller.
In one embodiment of the present invention, a power supply method of the power supply circuit includes: after the quick charging interface is inserted into a charging gun, the quick charging interface outputs signals to the battery low-voltage control unit and the vehicle control unit so that the battery low-voltage control unit and the vehicle control unit are awakened; after the vehicle control unit is awakened, sending an awakening signal to the all-in-one controller to enable the all-in-one controller to be awakened; the vehicle control unit sends a first instruction to the battery low-voltage control unit through the sixth communication module and the fourth communication module;
after receiving the first instruction, the battery low-voltage control unit sends a signal to the battery high-voltage power distribution unit through the third communication module and the second communication module so that the main and negative contactors in the battery high-voltage power distribution unit are attracted, wherein after the main and negative contactors are attracted, the all-in-one controller is connected with the power battery unit; after the main and negative contactors are closed, the battery high-voltage power distribution unit sends a feedback signal to the battery low-voltage control unit through the second communication module and the third communication module; after receiving the feedback signal, the battery low-voltage control unit sends a second instruction to the vehicle control unit through the fourth communication module and the sixth communication module; after receiving the second instruction, the vehicle control unit sends a third instruction to the control module of the all-in-one controller through the seventh communication module and the fifth communication module; after receiving the third instruction, the control module sends a signal to the auxiliary drive contactor to enable the auxiliary drive contactor to be closed; and after the auxiliary drive contactor is closed, the control module sends an enabling signal to the first DC-DC module to enable the first DC-DC module to supply power for an electric system of the whole vehicle.
In an embodiment of the present invention, the power supply method of the power supply circuit further includes: after the first DC-DC module supplies power to a whole vehicle electrical system, the whole vehicle controller sends a fourth instruction to the battery low-voltage control unit through the sixth communication module and the fourth communication module; the battery low pressure control unit receives behind the fourth instruction, process the third communication module and the second communication module to battery high voltage power distribution unit send signal makes in the battery high voltage power distribution unit fill the contactor actuation soon, wherein, fill behind the contactor actuation soon, the rifle that charges is put through the interface that fills soon power battery unit is right power battery unit charges.
In an embodiment of the present invention, the power supply method of the power supply circuit further includes: after the refrigeration control switch is closed, the vehicle controller sends a sixth instruction to the control module of the all-in-one controller through the seventh communication module and the fifth communication module; after receiving the sixth instruction, the control module sends a signal to an upper assembly contactor to enable the upper assembly contactor to be sucked, wherein the upper assembly contactor is arranged in the all-in-one controller and is connected with the control module, a main negative contactor of the battery high-voltage distribution unit and the refrigerating unit; and the refrigerating unit is connected with the power battery unit after the upper contactor is closed.
In an embodiment of the present invention, the power supply method of the power supply circuit further includes: after the refrigeration control switch is switched off, a normally open contact of the relay is switched off, and the vehicle control unit sends a seventh instruction to the control module of the all-in-one controller through the seventh communication module and the fifth communication module; and after receiving the seventh instruction, the control module sends a signal to the upper-mounted contactor to disconnect the upper-mounted contactor.
In an embodiment of the present invention, the refrigeration unit controller is connected to the first connector, and the power supply method of the power supply circuit includes: when the refrigeration control switch is closed, the normally open contact of the relay is closed, and then the refrigeration unit controller obtains voltage from the output end of the first connector.
In an embodiment of the present invention, the refrigeration unit controller is not connected to the first connector, the refrigeration unit controller is connected to the refrigeration unit via a second DC-DC module, and the second DC-DC module is configured to perform voltage conversion to supply power to the refrigeration unit controller.
In an embodiment of the present invention, the first power source is a storage battery, and the storage battery is connected to an output terminal of the first DC-DC module.
Compared with the prior art, according to the power supply circuit of the refrigerating unit system, the connector capable of outputting the voltage required by the refrigerating unit controller is reserved in the power supply circuit of the refrigerating unit system, the low voltage required by the refrigerating unit controller can be acquired from the connector according to the requirement of the refrigerating unit system, the instrument panel does not need to be disassembled and assembled, the installation is very convenient and safe, and the after-sale maintenance is convenient. And when the whole vehicle is powered off, the whole vehicle controller stops working, the relay cannot be attracted no matter whether the refrigeration control switch is closed or not, meanwhile, the all-in-one controller disconnects the high voltage of the refrigeration unit system, the refrigeration unit system is completely disconnected with the high-low voltage power supply of the whole vehicle, and no current consumption is generated on the whole vehicle.
Drawings
Fig. 1 is a schematic diagram of a new energy cold-chain logistics automobile according to the prior art.
Fig. 2 is a refrigeration unit system according to the prior art.
Fig. 3 is a wiring scheme of a power supply circuit of a refrigeration unit system according to the prior art.
Fig. 4 is a wiring scheme of a power supply circuit of a refrigeration unit system according to the prior art.
Fig. 5 is a refrigeration unit system according to the prior art.
Fig. 6 is a wiring scheme of a power supply circuit of a refrigeration unit system according to the prior art.
FIG. 7 shows a power circuit connection of a refrigeration unit system according to an embodiment of the present invention.
FIG. 8 illustrates the power circuit connections of the refrigeration unit system according to an embodiment of the present invention.
FIG. 9 illustrates the power circuit connections of the refrigeration unit system according to an embodiment of the present invention.
Detailed Description
The following detailed description of the present invention is provided in conjunction with the accompanying drawings, but it should be understood that the scope of the present invention is not limited to the specific embodiments.
Throughout the specification and claims, unless explicitly stated otherwise, the word "comprise", or variations such as "comprises" or "comprising", will be understood to imply the inclusion of a stated element or component but not the exclusion of any other element or component.
In order to overcome the following disadvantages of the wiring method of the power supply circuit of the refrigerating unit system of the refrigerating box shown in FIG. 2: the automobile production enterprises do not reserve a special interface for the refrigerating unit system, the workload is increased by assembling and disassembling the instrument panel, the manufacturing cost is increased, and the after-sale maintenance is not convenient; the number of wire harnesses at the ignition switch is large, and a modified factory is easy to connect wrong wire harnesses; the system power consumption of each refrigerating unit is different, and the ignition switch is additionally provided with a load without evaluation, so that the safety of the ignition switch is easy to burn out; the technical capabilities of the refrigeration unit systems of the refrigeration compartments of each manufacturer are different, the quiescent current of some products is too large, and the electric quantity of a storage battery is quickly consumed after the whole automobile is stopped and powered off, so that the automobile cannot be started next time. A power battery and charging system 20, an all-in-one controller 21 and a vehicle control unit 22. The all-in-one controller 21 is connected to a high-voltage input port of the refrigeration unit 11, and is configured to provide a required voltage for the refrigeration unit 11, for example, a high voltage such as 380V or 540V, the vehicle controller 22 is connected to the all-in-one controller 21, and the power battery and charging system 20 is connected to the all-in-one controller 21.
The power supply circuit further includes: a first power supply 23, a cooling control switch 24, and a relay 25. The first power supply 23 is for outputting a first voltage. Optionally, in one embodiment, the first power source 23 is a storage battery for outputting a voltage of 12V or 24V. A refrigeration control switch 24 may be placed on the cockpit instrument panel, one end of the refrigeration control switch 24 being connected to the output of the first power supply 23. One end of a coil of the relay 25 (pin 1 of the relay 25) is connected with the other end of the refrigeration control switch 24, the other end of the coil (pin 2 of the relay 25) is connected with the vehicle control unit 22, the resistor of the relay 25 is connected with the coil in parallel, one end of a normally open contact of the relay 25 (pin 4 of the relay 25) is connected with the output end of the first power supply 23, the other end of the normally open contact (pin 3 of the relay 25) is connected with the first connector 26, and the first connector 26 can output the voltage required by the refrigeration unit controller 10. If the refrigerating unit system is of the type shown in fig. 2, the refrigerating unit controller is connected with the first connector when the circuit is connected, and after the refrigeration control switch is closed, the normally open contact of the relay is attracted, so that the refrigerating unit controller obtains voltage from the output end of the first connector. It should be noted that the power supply circuit may also be adapted to the type of the refrigeration unit system shown in fig. 5, and when the connection is made, the refrigeration unit controller may not be connected to the first connector, and the voltage required by the refrigeration unit controller is obtained after voltage conversion is performed through a DC-DC module inside the refrigeration unit system.
The power supply circuit of the refrigerating unit system of this embodiment has reserved the connector that can output the required voltage of refrigerating unit controller from this, can select to acquire the required low-voltage of refrigerating unit controller from connector department according to the self demand of refrigerating unit system, need not the dismouting instrument board, and the installation is very convenient safety, makes things convenient for after sales maintenance simultaneously. And when the whole vehicle is powered off, the whole vehicle controller 22 stops working, no matter whether the refrigeration control switch is closed or not, the relay cannot be attracted, meanwhile, the all-in-one controller 21 disconnects the high voltage of the refrigeration unit system, the refrigeration unit system is completely disconnected with the high-low voltage power supply of the whole vehicle, and no current consumption is generated on the whole vehicle.
To further overcome the following disadvantages of the power supply circuit wiring scheme of the refrigerator chiller unit system shown in FIG. 2: "do not pass through whole car low-voltage wire harness fuse block, do not pass through special insurance, can't carry out current protection to refrigerating unit system from whole car level", an embodiment still provides a power supply circuit of refrigerating unit system, as shown in fig. 8, refrigerating unit system includes refrigerating unit controller 10 and refrigerating unit 11, power supply circuit includes: power battery and charging system 20, unification controller 21, vehicle control unit 22 more, wherein, unification controller 21 more with the high-pressure input port of refrigerating unit 11 links to each other for provide for the required voltage of refrigerating unit 11, vehicle control unit 22 with unify controller 21 more links to each other, power battery and charging system 20 with unify controller 21 more links to each other, supply circuit still includes: a first power supply 23, a cooling control switch 24, a relay 25, a fuse F1, and the like. In the present embodiment, the fuse F1 is added to the above-described embodiment, and the refrigerating unit system 100 can be current-protected.
The first power supply 23 is for outputting a first voltage. Optionally, in one embodiment, the first power source 23 is a storage battery for outputting a voltage of 12V or 24V. A refrigeration control switch 24 may be placed on the cockpit instrument panel, one end of the refrigeration control switch 24 being connected to the output of the first power supply 23. One end of the fuse F1 is connected to the output terminal of the first power supply 23. One end of a coil of the relay 25 is connected with the other end of the refrigeration control switch 24, the other end of the coil is connected with the vehicle control unit 22, a resistor of the relay 25 is connected with the coil in parallel, one end of a normally open contact of the relay 25 is connected with the other end of the fuse F1, the other end of the normally open contact is connected with the first connector 26, and the first connector 26 can output a voltage required by the refrigeration unit controller 10. If the refrigerating unit system is of the type shown in fig. 2, the refrigerating unit controller is connected with the first connector when the circuit is connected, and after the refrigeration control switch is closed, the normally open contact of the relay is attracted, so that the refrigerating unit controller obtains voltage from the output end of the first connector. It should be noted that the power supply circuit may also be adapted to the type of the refrigeration unit system shown in fig. 5, and when the connection is made, the refrigeration unit controller may not be connected to the first connector, and the voltage required by the refrigeration unit controller is obtained after voltage conversion is performed through a DC-DC module inside the refrigeration unit system.
The power supply circuit of the refrigerating unit system of this embodiment has reserved the connector that can output the required voltage of refrigerating unit controller from this, can select to acquire the required low-voltage of refrigerating unit controller from connector department according to the self demand of refrigerating unit system, need not the dismouting instrument board, and the installation is very convenient safety, makes things convenient for after sales maintenance simultaneously. And when the whole vehicle is powered off, the whole vehicle controller stops working, no matter whether the refrigeration control switch is closed or not, the relay cannot be attracted, meanwhile, the all-in-one controller disconnects the high voltage of the refrigeration unit system, the refrigeration unit system is completely disconnected with the high-low voltage power supply of the whole vehicle, no current consumption is generated on the whole vehicle, a fuse is added, and the refrigeration unit system can be subjected to current protection.
In order to solve the problem of unreasonable high voltage strategy, the power supply circuit and the power supply method of the refrigeration unit system are designed as follows in one embodiment, and the embodiment is suitable for the refrigeration unit system shown in fig. 2 and 5. As shown in fig. 9, the power battery and charging system 20 in the power supply circuit includes: the system comprises a power battery unit 201, a battery high-voltage distribution unit 202, a battery low-voltage control unit 203 and a quick charging interface 204. The power battery unit 201 has a first communication module 201a, and the power battery unit 201 outputs high voltage, for example, 380V, 540V, and the like. The battery high-voltage power distribution unit 202 is electrically connected with the power battery unit 201, and the battery high-voltage power distribution unit 202 comprises a main negative contactor 202a, a quick charging contactor 202b and a second communication module 202 c. The battery low-voltage control unit 203 is electrically connected to the battery high-voltage power distribution unit 202, and the battery low-voltage control unit 203 includes a third communication module 203a and a fourth communication module 203 b. The first communication module 201a, the second communication module 202c and the third communication module 203a are connected to each other for internal communication of the power battery and charging system 20. The quick charging interface 204 is connected with the battery low-voltage control unit 203, the quick charging contactor 202b in the battery high-voltage power distribution unit 202 and the vehicle control unit 22.
The all-in-one controller 21 in the power supply circuit is connected to the battery high-voltage distribution unit 202, and the all-in-one controller 21 includes: the control module 21a, the auxiliary drive contactor 21b, the first DC-DC module 21c, and the fifth communication module 21 d. The auxiliary drive contactor 21b is connected to the control module 21 a. The first DC-DC module 21c is connected to both the control module 21a and the auxiliary drive contactor 21 b. The fifth communication module 21d is connected to the control module 21 a.
The vehicle control unit 22 in the power supply circuit includes a sixth communication module 22a and a seventh communication module 22b, where the sixth communication module 22a is connected to the fourth communication module 203b for implementing communication between the vehicle control unit 22 and the battery low-voltage control unit 203, and the seventh communication module 22b is connected to the fifth communication module 21d for implementing communication between the vehicle control unit 22 and the all-in-one controller 21.
The power supply method of the power supply circuit comprises the following steps: after the quick charging interface 204 is inserted into a charging gun, the quick charging interface 204 outputs signals to the battery low-voltage control unit 203 and the vehicle control unit 22 so that the battery low-voltage control unit 203 and the vehicle control unit 22 are awakened; after the vehicle control unit 22 is awakened, a wake-up signal is sent to the all-in-one controller 21 so that the all-in-one controller 21 is awakened; the vehicle control unit 22 sends a first instruction to the battery low-voltage control unit 203 through the sixth communication module 22a and the fourth communication module 203 b; after receiving the first instruction, the battery low-voltage control unit 203 sends a signal to the battery high-voltage power distribution unit 202 through the third communication module 203a and the second communication module 202c, so that the main negative contactor 202a in the battery high-voltage power distribution unit 202 is closed, wherein after the main negative contactor 202a is closed, the all-in-one controller 21 is connected with the power battery unit 201; after the main negative contactor 202a is closed, the battery high-voltage power distribution unit 202 sends a feedback signal to the battery low-voltage control unit 203 through the second communication module 202c and the third communication module 203 a; after receiving the feedback signal, the battery low-voltage control unit 203 sends a second instruction to the vehicle control unit 22 through the fourth communication module 203b and the sixth communication module 22 a; after receiving the second instruction, the vehicle control unit 22 sends a third instruction to the control module 21a of the all-in-one controller 21 through the seventh communication module 22b and the fifth communication module 21 d; after receiving the third instruction, the control module 21a sends a signal to the auxiliary drive contactor 21b to pull in the auxiliary drive contactor 21 b; after the auxiliary drive contactor 21b is closed, the control module 21a sends an enable signal to the first DC-DC module 21c to enable the first DC-DC module 21c to supply power to an electric system of the whole vehicle. Therefore, the whole electric system is powered on, the charging pile and the whole vehicle complete handshake communication, the whole vehicle can be charged, the all-in-one controller completes high-voltage access, and high-voltage electricity can be further provided for the refrigerating unit system. Alternatively, the first DC-DC module 21c may supply a voltage of 12V or 24V, and the first DC-DC module 21c may be connected to a storage battery (first power supply 23) to charge it.
Further, in an embodiment, the power supply method of the power supply circuit further includes: after the first DC-DC module 21c supplies power to the electric system of the whole vehicle, the whole vehicle controller 22 sends a fourth instruction to the battery low-voltage control unit 203 through the sixth communication module 22a and the fourth communication module 203 b; the battery low voltage control unit 203 receives after the fourth instruction, process the third communication module 203a and the second communication module 202c to battery high voltage power distribution unit 202 sends a signal to make in the battery high voltage power distribution unit 202 the actuation of quick charging contactor 202b, wherein, after the actuation of quick charging contactor 202b, the rifle that charges switches on through quick charging interface 204 power battery unit 201 and right power battery unit 201 charges. Therefore, when the whole vehicle is charged, the refrigerating unit can also refrigerate simultaneously, and the situation that the ignition switch is turned off after a user pulls out a key and the refrigerating unit controller loses the 12V/24V power supply and cannot work is avoided.
Further, the power supply method of the power supply circuit of an embodiment further includes: after the refrigeration control switch 24 is closed, the vehicle controller 22 sends a sixth instruction to the control module 21a of the all-in-one controller 21 through the seventh communication module 22b and the fifth communication module 21 d; after receiving the sixth instruction, the control module 21a sends a signal to the upper mounting contactor 21e to enable the upper mounting contactor 21e to be closed, wherein the upper mounting contactor 21e is arranged in the all-in-one controller 21 and is connected with the control module 21a, the main negative contactor 202a of the battery high-voltage power distribution unit 202 and the refrigeration system unit 100; after the upper contactor 21e is closed, the refrigerating unit 11 is connected to the power battery unit 201. After the refrigeration control switch is turned off, the normally open contact of the relay is turned off, and the vehicle control unit 22 sends a seventh instruction to the control module 21a of the all-in-one controller 21 through the seventh communication module 22b and the fifth communication module 21 d; after receiving the seventh instruction, the control module 21a sends a signal to the upper contactor 21e to turn off the upper contactor 21 e. Through refrigeration control switch, convenient user opens the refrigerating unit function during charging, even pull out the key and also can control refrigerating unit system work or close, can avoid appearing the new energy automobile and be in the condition for refrigerating unit power supply state all the time when charging for a long time all the night more than one controller.
The foregoing descriptions of specific exemplary embodiments of the present invention have been presented for purposes of illustration and description. It is not intended to limit the invention to the precise form disclosed, and obviously many modifications and variations are possible in light of the above teaching. The exemplary embodiments were chosen and described in order to explain certain principles of the invention and its practical application to enable one skilled in the art to make and use various exemplary embodiments of the invention and various alternatives and modifications as are suited to the particular use contemplated. It is intended that the scope of the invention be defined by the claims and their equivalents.
Claims (10)
1. A power supply circuit for a refrigeration unit system, the refrigeration unit system including a refrigeration unit controller and a refrigeration unit, the power supply circuit comprising: power battery and charging system, unification controller, vehicle control unit more, wherein, unify the controller more with the high-pressure input port of refrigerating unit links to each other for provide for the required voltage of refrigerating unit, vehicle control unit with unify the controller more and power battery and charging system all link to each other, power battery and charging system with unify the controller more and link to each other, its characterized in that, supply circuit still includes:
a first power supply for outputting a first voltage;
one end of the refrigeration control switch is connected with the output end of the first power supply; and
the system comprises a relay, one end of a coil of the relay is connected with the other end of a refrigeration control switch, the other end of the coil is connected with the whole vehicle controller, a resistor of the relay is connected with the coil in parallel, one end of a normally open contact of the relay is connected with the output end of a first power supply, the other end of the normally open contact is connected with a first connector, and the first connector can output voltage required by the refrigeration unit controller.
2. A power supply circuit for a refrigeration unit system, the refrigeration unit system including a refrigeration unit controller and a refrigeration unit, the power supply circuit comprising: power battery and charging system, unification controller, vehicle control unit more, wherein, unify the controller more with the high-pressure input port of refrigerating unit links to each other for provide for the required voltage of refrigerating unit, vehicle control unit with unify the controller more and power battery and charging system all link to each other, power battery and charging system with unify the controller more and link to each other, its characterized in that, supply circuit still includes:
a first power supply for outputting a first voltage;
one end of the refrigeration control switch is connected with the output end of the first power supply;
one end of the fuse is connected with the output end of the first power supply; and
the device comprises a relay, one end of a coil of the relay is connected with the other end of a refrigeration control switch, the other end of the coil is connected with the vehicle control unit, a resistor of the relay is connected with the coil in parallel, one end of a normally open contact of the relay is connected with the other end of a fuse, the other end of the normally open contact is connected with a first connector, and the first connector can output voltage required by the refrigeration unit controller.
3. The refrigeration chiller system supply circuit of claim 1 or 2,
the power battery and charging system in the power supply circuit comprises:
the power battery unit is provided with a first communication module;
the battery high-voltage power distribution unit is electrically connected with the power battery unit and comprises a main negative contactor, a quick charging contactor and a second communication module;
the battery low-voltage control unit is electrically connected with the battery high-voltage power distribution unit and comprises a third communication module and a fourth communication module, wherein the first communication module, the second communication module and the third communication module are connected and are used for internal communication of the power battery and the charging system; and
a quick charging interface which is connected with the battery low-voltage control unit, a quick charging contactor in the battery high-voltage distribution unit and the vehicle control unit,
among the power supply circuit the all-in-one controller with battery high voltage distribution unit links to each other, the all-in-one controller includes:
a control module;
the auxiliary drive contactor is connected with the control module;
the first DC-DC module is connected with the control module and the auxiliary drive contactor; and
a fifth communication module connected with the control module,
the vehicle control unit in the power supply circuit comprises a sixth communication module and a seventh communication module, wherein the sixth communication module is connected with the fourth communication module and used for realizing communication between the vehicle control unit and the battery low-voltage control unit, and the seventh communication module is connected with the fifth communication module and used for realizing communication between the vehicle control unit and the all-in-one controller.
4. The power supply circuit of a chiller system of claim 3, wherein the power supply circuit power supply method comprises:
after the quick charging interface is inserted into a charging gun, the quick charging interface outputs signals to the battery low-voltage control unit and the vehicle control unit so that the battery low-voltage control unit and the vehicle control unit are awakened;
after the vehicle control unit is awakened, sending an awakening signal to the all-in-one controller to enable the all-in-one controller to be awakened;
the vehicle control unit sends a first instruction to the battery low-voltage control unit through the sixth communication module and the fourth communication module;
after receiving the first instruction, the battery low-voltage control unit sends a signal to the battery high-voltage power distribution unit through the third communication module and the second communication module so that the main and negative contactors in the battery high-voltage power distribution unit are attracted, wherein after the main and negative contactors are attracted, the all-in-one controller is connected with the power battery unit;
after the main and negative contactors are closed, the battery high-voltage power distribution unit sends a feedback signal to the battery low-voltage control unit through the second communication module and the third communication module;
after receiving the feedback signal, the battery low-voltage control unit sends a second instruction to the vehicle control unit through the fourth communication module and the sixth communication module;
after receiving the second instruction, the vehicle control unit sends a third instruction to the control module of the all-in-one controller through the seventh communication module and the fifth communication module;
after receiving the third instruction, the control module sends a signal to the auxiliary drive contactor to enable the auxiliary drive contactor to be closed; and
and after the auxiliary drive contactor is closed, the control module sends an enabling signal to the first DC-DC module to enable the first DC-DC module to supply power for an electric system of the whole vehicle.
5. The power supply circuit of a chiller system of claim 4, wherein the method of powering the power supply circuit further comprises:
after the first DC-DC module supplies power to a whole vehicle electrical system, the whole vehicle controller sends a fourth instruction to the battery low-voltage control unit through the sixth communication module and the fourth communication module;
the battery low pressure control unit receives behind the fourth instruction, process the third communication module and the second communication module to battery high voltage power distribution unit send signal makes in the battery high voltage power distribution unit fill the contactor actuation soon, wherein, fill behind the contactor actuation soon, the rifle that charges is put through the interface that fills soon power battery unit is right power battery unit charges.
6. The power supply circuit of a chiller system of claim 4, wherein the method of powering the power supply circuit further comprises:
after the refrigeration control switch is closed, the vehicle controller sends a sixth instruction to the control module of the all-in-one controller through the seventh communication module and the fifth communication module; and
after receiving the sixth instruction, the control module sends a signal to an upper assembly contactor to enable the upper assembly contactor to be sucked, wherein the upper assembly contactor is arranged in the all-in-one controller and is connected with the control module, a main negative contactor of the battery high-voltage distribution unit and the refrigerating unit; and the refrigerating unit is connected with the power battery unit after the upper contactor is closed.
7. The power supply circuit of a chiller system of claim 6, wherein the method of powering the power supply circuit further comprises:
after the refrigeration control switch is switched off, a normally open contact of the relay is switched off, and the vehicle control unit sends a seventh instruction to the control module of the all-in-one controller through the seventh communication module and the fifth communication module;
and after receiving the seventh instruction, the control module sends a signal to the upper-mounted contactor to disconnect the upper-mounted contactor.
8. The power supply circuit for a chiller system of claim 1, wherein the chiller controller is connected to the first connector, the method of powering the power supply circuit comprising: when the refrigeration control switch is closed, the normally open contact of the relay is closed, and then the refrigeration unit controller obtains voltage from the output end of the first connector.
9. The power supply circuit for a chiller system of claim 1 wherein said chiller controller is not connected to said first connector, said chiller controller being connected to said chiller unit via a second DC-DC module, said second DC-DC module being adapted to perform voltage conversion to power said chiller controller.
10. The refrigeration chiller system supply circuit of claim 1, wherein the first power source is a battery, the battery being connected to the output of the first DC-DC module.
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| CN202110394180.6A CN113103979B (en) | 2021-04-13 | 2021-04-13 | Power supply circuit of refrigerating unit system |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN113183897A (en) * | 2021-04-13 | 2021-07-30 | 广西玉柴新能源汽车有限公司 | Power supply circuit of refrigerating unit system |
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| CN113103979B (en) | 2022-09-20 |
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