CN216231688U - Power supply control system of refrigerator car refrigerating unit and refrigerator car - Google Patents
Power supply control system of refrigerator car refrigerating unit and refrigerator car Download PDFInfo
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Abstract
The utility model relates to a power supply control system of a refrigerator car refrigerating unit and a refrigerator car, the refrigerating unit comprises a DC power supply circuit, an AC power supply circuit and a power supply switching control terminal, the power supply switching control terminal comprises a control circuit, an AC power supply input detection port and a DC relay control port, the AC power supply circuit comprises an AC feedback circuit, the AC feedback circuit is used for converting AC signals in the AC power supply circuit into weak current signals, the AC power supply input detection port is connected with the AC feedback circuit and is used for detecting whether the weak current signals exist, the DC relay control port is connected with the DC power supply circuit, the control circuit is respectively connected with the AC power supply input detection port and the DC relay control port, the DC power supply circuit is controlled to be switched on or off through the DC relay control port according to whether the weak current signals exist, thereby realizing the automatic switching of the power supply of the new energy refrigerator car refrigerating unit, the problem of abnormal power supply is avoided, and normal operation of the refrigerating unit is guaranteed.
Description
Technical Field
The application belongs to the technical field of power supply control of refrigerated trucks, and particularly relates to a power supply control system of a refrigerating unit of a refrigerated truck and a refrigerated truck.
Background
The new energy refrigerator car rises along with the rapid development of new energy automobiles, the traditional refrigerator car refrigerating unit generally drives the equipment of the refrigerating unit to operate by means of wheel transmission, the new energy refrigerator car refrigerating unit adopts a vehicle-mounted battery power supply mode, the refrigerating unit operates independently, the effect is better in the aspect of temperature control, clean energy is adopted at the same time, the tail gas emission caused by the fact that the traditional refrigerator car refrigerating unit depends on the wheel transmission of a fuel automobile is reduced, part of the energy of the vehicle-mounted battery is required to be used for the whole car to operate, and in order to reduce the electric energy consumption of the vehicle-mounted battery of the refrigerating unit, alternating current power supply is adopted to reduce the energy consumption of the vehicle-mounted battery when the refrigerator car is parked. The traditional alternating current power supply and the direct current power supply are switched in a manual mode, the direct current power supply is manually cut off when the alternating current power supply is switched in, if a switching person forgets to turn off the direct current power supply, the alternating current power supply is switched in, the problem of abnormal power supply can occur, and the unit cannot normally run.
SUMMERY OF THE UTILITY MODEL
For at least when overcoming the refrigerator car and adopting the alternating current-direct current power supply to a certain extent, adopt manual mode when alternating current power supply switches over with direct current power supply, can appear not closing alternating current power supply and direct access direct current power supply causes the power supply unusual, make the unable normal operating problem of unit, this application provides a power supply control system and refrigerator car of refrigerator car refrigerating unit.
In a first aspect, the present application provides a power supply control system for a refrigeration unit of a refrigerated vehicle, comprising:
the power supply switching control circuit comprises a direct current power supply circuit, an alternating current power supply circuit and a power supply switching control terminal;
the power supply switching control terminal comprises a control circuit, an alternating current power supply input detection port and a direct current relay control port;
the alternating current power supply circuit comprises an alternating current feedback circuit, and the alternating current feedback circuit is used for converting an alternating current signal in the alternating current power supply circuit into a weak current signal;
the alternating current power supply input detection port is connected with the alternating current feedback circuit and used for detecting whether the weak current signal exists or not;
the direct current relay control port is connected with the direct current power supply circuit;
the control circuit is respectively connected with the alternating current power supply input detection port and the direct current relay control port and is used for controlling the direct current power supply circuit to be switched on or switched off through the direct current relay control port according to the existence of the weak current signal.
Further, the power switching control terminal further includes:
the alternating current relay control port is connected with the alternating current power supply circuit;
the control circuit is also used for controlling the conduction of the alternating current power supply circuit through the alternating current relay control port.
Further, the power switching control terminal further includes:
the communication port is used for being connected with a refrigerating unit of the refrigerator car;
the control circuit is also used for sending a shutdown control signal to the refrigerating unit of the refrigerated vehicle through the communication port, and controlling the conduction of the alternating current power supply circuit according to the time for sending the shutdown control signal and the preset discharge time of the refrigerating unit of the refrigerated vehicle.
Further, the ac power supply circuit further includes:
a live wire relay circuit and a zero wire relay circuit,
and the control port of the alternating current relay is respectively connected with the live wire relay circuit and the zero line relay circuit.
Further, the ac power supply circuit further includes:
an alternating current power supply input port and an alternating current power supply output port;
the alternating current power supply input port is used for connecting an external alternating current power supply;
the live wire relay circuit is respectively connected with the alternating current power supply input port and the alternating current power supply output port and is used for controlling whether the alternating current power supply input port and the alternating current power supply output port are conducted or not;
the zero line relay circuit is respectively connected with the alternating current power supply input port and the alternating current power supply output port and is used for controlling whether the alternating current power supply input port and the alternating current power supply output port are conducted or not.
Further, the ac power supply circuit further includes:
and the rectifier bridge circuit is connected with the output port of the alternating current power supply.
Further, the dc power supply circuit further includes:
a positive electrode direct current relay circuit and a negative electrode direct current relay circuit,
and the direct current relay control port is respectively connected with the positive direct current relay circuit and the negative direct current relay circuit.
Further, the dc power supply circuit further includes:
a direct current power supply input port and a direct current power supply output port;
the direct-current power supply input port is used for connecting a vehicle-mounted high-voltage battery;
the positive direct-current relay circuit is respectively connected with the direct-current power supply input port and the direct-current power supply output port and is used for controlling whether the direct-current power supply input port and the direct-current power supply output port are conducted or not;
the negative direct current relay circuit is respectively connected with the direct current power supply input port and the direct current power supply output port and is used for controlling whether the direct current power supply input port and the direct current power supply output port are conducted or not.
Further, the controlling the direct current power supply circuit to be turned on or off through the direct current relay control port according to whether the weak current signal exists includes:
when the alternating current power supply input detection port acquires the weak current signal, the direct current power supply circuit is controlled to be switched off through the direct current relay control port;
and when the alternating current power supply input detection port does not acquire the weak current signal within a preset time threshold, controlling the conduction of the direct current power supply circuit through the direct current relay control port.
In a second aspect, the present application provides a refrigerated vehicle comprising:
a power supply control system for a refrigerated vehicle refrigeration unit as described in the first aspect.
The technical scheme provided by the embodiment of the application can have the following beneficial effects:
the power supply control system of the refrigerator car refrigerating unit and the refrigerator car provided by the embodiment of the application, the power supply control system of the refrigerator car refrigerating unit comprises a direct current power supply circuit, an alternating current power supply circuit and a power supply switching control terminal, the power supply switching control terminal comprises a control circuit, an alternating current power supply input detection port and a direct current relay control port, the alternating current power supply circuit comprises an alternating current feedback circuit, the alternating current feedback circuit is used for converting alternating current signals in the alternating current power supply circuit into weak current signals, the alternating current power supply input detection port is connected with the alternating current feedback circuit and is used for detecting whether the weak current signals exist or not, the direct current relay control port is connected with the direct current power supply circuit, the control circuit is respectively connected with the alternating current power supply input detection port and the direct current relay control port and is used for controlling the direct current power supply circuit to be switched on or switched off through the direct current relay control port according to whether the weak current signals exist or not, the automatic switching of the power supply of the refrigerating unit of the new energy refrigerator car is realized, the direct-current power supply can be automatically turned off when the alternating-current power supply is started, the unit is ensured to be supplied with power only under one power condition, the problem of abnormal power supply is avoided, and the normal operation of the refrigerating unit is ensured.
It is to be understood that both the foregoing general description and the following detailed description are exemplary and explanatory only and are not restrictive of the application.
Drawings
The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the present application and together with the description, serve to explain the principles of the application.
Fig. 1 is a functional block diagram of a power supply control system of a refrigerator car refrigerating unit according to an embodiment of the present application.
Fig. 2 is a functional block diagram of a power supply control system of a refrigerator car refrigeration unit according to another embodiment of the present disclosure.
Fig. 3 is a functional block diagram of a power supply control system of a refrigerator car refrigeration unit according to another embodiment of the present application.
Fig. 4 is a functional block diagram of a power supply control system of a refrigerator car refrigeration unit according to another embodiment of the present application.
Fig. 5 is a flowchart illustrating a method for controlling power supply to a refrigeration unit of a refrigerator car according to an embodiment of the present disclosure.
Detailed Description
In order to make the objects, technical solutions and advantages of the present application more apparent, the technical solutions of the present application will be described in detail below. It is to be understood that the embodiments described are only a few embodiments of the present application and not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the examples given herein without making any creative effort, shall fall within the protection scope of the present application.
Fig. 1 is a schematic structural diagram of a refrigeration unit according to an embodiment of the present application, and as shown in fig. 1, a power supply control system of a refrigeration unit of a refrigerator car includes:
the power supply switching control circuit comprises a direct current power supply circuit 2, an alternating current power supply circuit 3 and a power supply switching control terminal 1;
the power supply switching control terminal 1 comprises a control circuit 11, an alternating current power supply input detection port 12 and a direct current relay control port 13;
the alternating current power supply circuit 3 comprises an alternating current feedback circuit 31, wherein the alternating current feedback circuit 31 is used for converting an alternating current signal in the alternating current power supply circuit into a weak current signal;
the alternating current power supply input detection port 12 is connected with an alternating current feedback circuit 31 and is used for detecting whether weak current signals exist or not;
the direct current relay control port 13 is connected with the direct current power supply circuit 2;
the control circuit 11 is respectively connected with the ac power input detection port 12 and the dc relay control port 13, and is configured to control the dc power supply circuit 2 to be turned on or off through the dc relay control port 13 according to whether a weak current signal exists.
In this embodiment, controlling the dc power supply circuit 2 to be turned on or off through the dc relay control port 13 according to whether the weak current signal exists includes:
when the alternating current power supply input detection port 12 acquires a weak current signal, the direct current power supply circuit 2 is controlled to be switched off through the direct current relay control port 13;
when the alternating current power input detection port 12 does not acquire a weak current signal within a preset time threshold, the direct current power supply circuit 2 is controlled to be conducted through the direct current relay control port 13.
The traditional new energy refrigerator car refrigerating unit adopts a manual mode when switching between an alternating current power supply and a direct current power supply, the direct current power supply is manually cut off when the alternating current power supply is switched in, if a switching person forgets to close the direct current power supply, the alternating current power supply is switched in, the problem of abnormal power supply can occur, and the unit can not normally operate.
In this embodiment, the power supply control system of the refrigerator car refrigerating unit includes a dc power supply circuit, an ac power supply circuit and a power supply switching control terminal, the power supply switching control terminal includes a control circuit, an ac power input detection port and a dc relay control port, the ac power supply circuit includes an ac feedback circuit, the ac feedback circuit is used to convert an ac signal in the ac power supply circuit into a weak current signal, the ac power input detection port is connected to the ac feedback circuit and is used to detect whether the weak current signal exists, the dc relay control port is connected to the dc power supply circuit, the control circuit is respectively connected to the ac power input detection port and the dc relay control port and is used to control the dc power supply circuit to be turned on or off through the dc relay control port according to whether the weak current signal exists, so as to realize the automatic switching of the power supply of the new energy refrigerator car refrigerating unit, when the alternating current power supply is started, the direct current power supply can be automatically turned off, the unit is ensured to be supplied with power only under one power supply condition, the problem of abnormal power supply is avoided, and the normal operation of the refrigerating unit is ensured.
In some embodiments, when the new energy refrigerator car is parked, the direct-current power supply of the refrigerating unit needs to be manually cut off, and the alternating-current power supply of the refrigerating unit is connected again, so that the automation degree is low.
Fig. 2 is a schematic structural diagram of a refrigeration unit according to an embodiment of the present application, and as shown in fig. 2, the power switching control terminal includes:
the alternating current relay control port 14, the alternating current relay control port 14 is connected with the alternating current power supply circuit 3;
the control circuit 11 is also used for controlling the conduction of the alternating current power supply circuit 3 through the alternating current relay control port 14.
The communication port 15 is used for being connected with a refrigerating unit of the refrigerator car;
the control circuit 11 is further configured to send a shutdown control signal to the refrigeration unit of the refrigerator car through the communication port 15, and control the ac power supply circuit 3 to be turned on according to the time for sending the shutdown control signal and the preset discharge time of the refrigeration unit of the refrigerator car.
In some embodiments, a low voltage power input port is included and is connected to a low voltage battery power source in the refrigerated vehicle to provide power to the control circuit 11 from the low voltage battery power source in the refrigerated vehicle.
Under the condition of direct current power supply, the input end of the direct current power supply circuit is connected with a direct current battery pack power supply of the new-energy refrigerator car, the output end of the direct current power supply circuit is connected with a control board of a refrigerating unit of the refrigerator car, and the control board of the refrigerating unit is connected with each load on the unit to control each load to perform refrigerating operation. Under the condition of alternating current power supply, the input end of an alternating current power supply circuit is connected with alternating current commercial power, the output end of the alternating current power supply circuit is connected with a control board of the refrigerating unit, and the control board of the refrigerating unit is connected with each load on the unit to control each load to carry out refrigerating operation work. In order to ensure the safety, when the alternating current commercial power is connected into the alternating current circuit, the input end of the direct current circuit can be automatically disconnected, after the capacitor discharge on the control board of the refrigerating unit is completed, the alternating current output end is connected into the control board of the unit, and the control board continuously controls each load to carry out refrigerating operation work.
In the embodiment, the power supply switching control terminal is used for controlling the automatic switching of the alternating current power supply and the direct current power supply, so that the problem of error caused by manual switching is avoided, and the system stability is improved.
Fig. 3 is a schematic structural diagram of a refrigeration unit according to an embodiment of the present application, and as shown in fig. 3, the ac power supply circuit further includes:
a live relay circuit 32 and a neutral relay circuit 33,
the live wire relay circuit 32 comprises a live wire relay, and is connected with a line and a port of the live wire relay;
the zero line relay circuit 33 comprises a zero line relay, and is connected with a line and a port of the zero line relay;
the ac relay control port 12 is connected to a live relay circuit 32 and a neutral relay circuit 33, respectively.
An ac power input port 34 and an ac power output port 35;
the ac power input port 34 is used for connecting an external ac power supply;
the live wire relay circuit 32 is respectively connected with the ac power input port 34 and the ac power output port 35, and is configured to control whether the ac power input port 34 and the ac power output port 35 are turned on;
the zero line relay circuit 33 is respectively connected to the ac power input port 34 and the ac power output port 35, and is configured to control whether the ac power input port 34 and the ac power output port 35 are on.
And the rectifier bridge circuit 36, the rectifier bridge circuit 36 and the alternating current power output port 35 are connected.
The stability of the alternating current output from the alternating current power output port 35 can be improved by the rectifier bridge circuit 36.
In some cases, if the ac feedback circuit 31 feeds back a high level signal, it is determined that the ac power supply circuit is turned on.
In this embodiment, by adding the ac feedback circuit 31 to the ac power supply circuit, the state of the ac power supply circuit can be automatically obtained, which provides a favorable basis for subsequent control, and by automatically controlling the opening or closing of the zero line relay and the live line relay, the ac power supply can be automatically turned on or off without manual operation, which saves labor and improves efficiency.
Fig. 4 is a schematic structural diagram of a refrigeration unit according to an embodiment of the present application, and as shown in fig. 4, the dc power supply circuit further includes:
a positive dc relay circuit 21 and a negative dc relay circuit 22,
the dc relay control port 13 is connected to a positive dc relay circuit 21 and a negative dc relay circuit 22, respectively.
The positive direct current relay circuit 21 comprises a positive direct current relay, and is connected with a circuit and a port of the positive direct current relay;
the negative dc relay circuit 22 includes a negative dc relay, and lines and ports connecting the negative dc relay.
A dc power input port 23 and a dc power output port 24;
the direct-current power supply input port 23 is used for connecting a vehicle-mounted high-voltage battery;
the positive direct current relay circuit 21 is respectively connected with the direct current power supply input port 23 and the direct current power supply output port 24, and is used for controlling whether the direct current power supply input port 23 and the direct current power supply output port 24 are conducted or not;
the negative dc relay circuit 22 is connected to the dc power input port 23 and the dc power output port 24, respectively, and is configured to control whether the dc power input port 23 and the dc power output port 24 are turned on.
In this embodiment, through the disconnection or the closure of automatic control positive pole direct current relay, negative pole direct current relay, can realize that direct current power supply automatic switch-on or disconnection does not need the manual operation, uses manpower sparingly, raises the efficiency.
In some embodiments, when the refrigerating unit of the new energy refrigerator car is used for refrigerating, the vehicle-mounted high-voltage battery and the low-voltage battery power supply of the refrigerator car are started firstly, the low-voltage battery power supply supplies power for the automatic power supply switching control terminal, after the automatic power supply switching control terminal is powered on, a singlechip in a control circuit on the terminal detects whether an input detection port of the alternating current power supply receives a high-level signal fed back by an alternating current feedback circuit in the alternating current power supply circuit, if the feedback signal is not received within the preset time, the preset test time is determined according to the actual application environment test condition, the single chip microcomputer sends a closing signal to a negative direct current relay circuit and a positive direct current relay circuit in the direct current power supply circuit to close the direct current relays, direct current is connected to a control board of the refrigerating unit through a direct current power supply output port, and the control board of the refrigerating unit controls all loads of the refrigerating unit to carry out refrigerating work.
In some embodiments, when the unit is running under the condition of high-voltage direct-current power supply, an alternating-current power supply input port at the front end of an alternating-current power supply circuit is connected with alternating current, an alternating-current power supply input detection circuit detects that alternating current is connected in and feeds back an alternating-current power supply connection signal to a single chip microcomputer through an alternating-current power supply input detection port in an automatic power supply switching control terminal, the single chip microcomputer firstly sends a shutdown signal to a control panel of the refrigerating unit through a communication port and a peripheral communication circuit, the control panel of the refrigerating unit starts to control the refrigerating unit to shutdown after receiving the control signal, after the standby unit is shut down, a preset discharge time is waited to complete discharge of the control panel, the preset discharge time is determined according to a capacitance resistance selection test result on the control panel, and after the discharge is completed, the power supply switching control terminal sends a relay disconnection signal to a negative direct-current relay circuit and a positive direct-current relay circuit in the direct-current power supply circuit, the direct current is switched off, the single chip microcomputer on the power supply switching control terminal sends a relay closing signal to the zero line relay circuit in the alternating current power supply circuit, the direct current is connected, the alternating current is connected into the control panel of the refrigerating unit through the output port after being rectified by the rectifier bridge circuit in the alternating current power supply circuit, and the control panel of the refrigerating unit controls each load of the unit to carry out refrigerating work.
In some embodiments, the refrigeration unit is not powered by a vehicle-mounted high-voltage battery, only an alternating current power supply is used for powering, only the vehicle-mounted low-voltage battery power supply needs to be started, the power supply automatic switching control terminal starts to work after the low-voltage battery power supply is started, at the moment, a single chip microcomputer on the terminal sends a closing signal to a zero line relay circuit and a live line relay circuit in a 3 alternating current power supply circuit after detecting an alternating current power supply input signal fed back by an alternating current feedback circuit in the alternating current power supply circuit, so that alternating current is connected into the alternating current power supply circuit and is output to a control panel of the refrigeration unit through a port after being rectified by a rectifying circuit, and the control panel of the refrigeration unit controls each load of the units to perform refrigeration work.
Fig. 5 is a flowchart of a power supply control method for a refrigerator car refrigerating unit according to an embodiment of the present application, and as shown in fig. 5, the power supply control method for the refrigerator car refrigerating unit includes:
s51: converting an alternating current signal in an alternating current power supply circuit into a weak current signal;
s52: detecting whether an alternating current power supply input detection port receives a weak current signal;
s53: and controlling the direct current power supply circuit to be switched on or switched off according to the weak current signal.
In this embodiment, controlling the direct current power supply circuit to be turned on or off according to the weak current signal specifically includes:
when the alternating current power supply input detection port acquires a weak current signal, the direct current relay control port controls the direct current power supply circuit to be disconnected;
and when the alternating current power supply input detection port does not acquire a weak current signal within a preset time threshold, controlling the conduction of the direct current power supply circuit through the direct current relay control port.
In some embodiments, further comprising:
and after a shutdown signal is sent to the refrigerating unit of the refrigerating room, the AC power supply circuit is controlled to be conducted according to the preset discharging time of the refrigerating unit of the refrigerating room.
In the embodiment, the alternating current signal in the alternating current power supply circuit is converted into the weak current signal, whether the alternating current power supply input detection port receives the weak current signal or not is detected, the direct current power supply circuit is controlled to be switched on or switched off according to the weak current signal, the automatic switching of the power supply of the refrigerating unit of the new energy refrigerator car can be realized, the direct current power supply can be automatically switched off when the alternating current power supply is started, the unit is ensured to be supplied with power only under one power supply condition, the abnormal power supply problem is avoided, and the normal operation of the refrigerating unit is ensured.
One embodiment of the present application provides a refrigerator car, including:
the power supply control system for the refrigerating unit of the refrigerated vehicle as described in the above embodiments.
It is understood that the same or similar parts in the above embodiments may be mutually referred to, and the same or similar parts in other embodiments may be referred to for the content which is not described in detail in some embodiments.
In the description herein, reference to the description of the term "one embodiment," "some embodiments," "an example," "a specific example," or "some examples," etc., means that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the application. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.
Although embodiments of the present application have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting the present application, and that variations, modifications, substitutions and alterations may be made to the above embodiments by those of ordinary skill in the art within the scope of the present application.
It should be noted that the present invention is not limited to the above-mentioned preferred embodiments, and those skilled in the art can obtain other products in various forms without departing from the spirit of the present invention, but any changes in shape or structure can be made within the scope of the present invention with the same or similar technical solutions as those of the present invention.
Claims (10)
1. A power supply control system for a refrigeration unit of a refrigerated vehicle, comprising:
the power supply switching control circuit comprises a direct current power supply circuit, an alternating current power supply circuit and a power supply switching control terminal;
the power supply switching control terminal comprises a control circuit, an alternating current power supply input detection port and a direct current relay control port;
the alternating current power supply circuit comprises an alternating current feedback circuit, and the alternating current feedback circuit is used for converting an alternating current signal in the alternating current power supply circuit into a weak current signal;
the alternating current power supply input detection port is connected with the alternating current feedback circuit and used for detecting whether the weak current signal exists or not;
the direct current relay control port is connected with the direct current power supply circuit;
the control circuit is respectively connected with the alternating current power supply input detection port and the direct current relay control port, and controls the direct current power supply circuit to be switched on or switched off through the direct current relay control port according to the existence of the weak current signal.
2. A power supply control system for a refrigerator unit in a refrigerated vehicle as recited in claim 1 wherein the power switching control terminal further comprises:
the alternating current relay control port is connected with the alternating current power supply circuit;
the control circuit is also used for controlling the conduction of the alternating current power supply circuit through the alternating current relay control port.
3. A power supply control system for a refrigerator unit in a refrigerated vehicle as recited in claim 1 wherein the power switching control terminal further comprises:
the communication port is used for being connected with a refrigerating unit of the refrigerator car;
the control circuit is also used for sending a shutdown control signal to the refrigerating unit of the refrigerated vehicle through the communication port, and controlling the conduction of the alternating current power supply circuit according to the time for sending the shutdown control signal and the preset discharge time of the refrigerating unit of the refrigerated vehicle.
4. A power supply control system for a refrigerator car unit as set forth in claim 2 wherein said ac power supply circuit further includes:
a live wire relay circuit and a zero wire relay circuit,
and the control port of the alternating current relay is respectively connected with the live wire relay circuit and the zero line relay circuit.
5. A power supply control system for a refrigerator car unit as set forth in claim 4 wherein said AC power supply circuit further includes:
an alternating current power supply input port and an alternating current power supply output port;
the alternating current power supply input port is used for connecting an external alternating current power supply;
the live wire relay circuit is respectively connected with the alternating current power supply input port and the alternating current power supply output port and is used for controlling whether the alternating current power supply input port and the alternating current power supply output port are conducted or not;
the zero line relay circuit is respectively connected with the alternating current power supply input port and the alternating current power supply output port and is used for controlling whether the alternating current power supply input port and the alternating current power supply output port are conducted or not.
6. A power supply control system for a refrigerator car unit as set forth in claim 5 wherein said AC power supply circuit further includes:
and the rectifier bridge circuit is connected with the output port of the alternating current power supply.
7. A power supply control system for a refrigerator car unit as set forth in claim 1 wherein said dc power supply circuit further includes:
a positive electrode direct current relay circuit and a negative electrode direct current relay circuit,
and the direct current relay control port is respectively connected with the positive direct current relay circuit and the negative direct current relay circuit.
8. A power supply control system for a refrigerator car unit as set forth in claim 7 wherein said dc power supply circuit further includes:
a direct current power supply input port and a direct current power supply output port;
the direct-current power supply input port is used for connecting a vehicle-mounted high-voltage battery;
the positive direct-current relay circuit is respectively connected with the direct-current power supply input port and the direct-current power supply output port and is used for controlling whether the direct-current power supply input port and the direct-current power supply output port are conducted or not;
the negative direct current relay circuit is respectively connected with the direct current power supply input port and the direct current power supply output port and is used for controlling whether the direct current power supply input port and the direct current power supply output port are conducted or not.
9. A power supply control system for a refrigeration unit of a refrigerated vehicle as recited in claim 1 wherein said controlling the dc power supply circuit to be on or off via the dc relay control port based on the presence or absence of the weak current signal comprises:
when the alternating current power supply input detection port acquires the weak current signal, the direct current power supply circuit is controlled to be switched off through the direct current relay control port;
and when the alternating current power supply input detection port does not acquire the weak current signal within a preset time threshold, controlling the conduction of the direct current power supply circuit through the direct current relay control port.
10. A refrigerated vehicle, comprising:
a power supply control system for a refrigerator car chiller as claimed in any one of claims 1 to 9.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122432765.0U CN216231688U (en) | 2021-10-08 | 2021-10-08 | Power supply control system of refrigerator car refrigerating unit and refrigerator car |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122432765.0U CN216231688U (en) | 2021-10-08 | 2021-10-08 | Power supply control system of refrigerator car refrigerating unit and refrigerator car |
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| CN216231688U true CN216231688U (en) | 2022-04-08 |
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| CN202122432765.0U Active CN216231688U (en) | 2021-10-08 | 2021-10-08 | Power supply control system of refrigerator car refrigerating unit and refrigerator car |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113991826A (en) * | 2021-10-08 | 2022-01-28 | 珠海格力电器股份有限公司 | Power supply control system and method for refrigerating unit of refrigerator car and refrigerator car |
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2021
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113991826A (en) * | 2021-10-08 | 2022-01-28 | 珠海格力电器股份有限公司 | Power supply control system and method for refrigerating unit of refrigerator car and refrigerator car |
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