CN215850637U - Air conditioner control system of new energy commercial vehicle - Google Patents
Air conditioner control system of new energy commercial vehicle Download PDFInfo
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- CN215850637U CN215850637U CN202121668828.6U CN202121668828U CN215850637U CN 215850637 U CN215850637 U CN 215850637U CN 202121668828 U CN202121668828 U CN 202121668828U CN 215850637 U CN215850637 U CN 215850637U
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Abstract
The utility model discloses an air conditioner control system of a new energy commercial vehicle, which is characterized by comprising the following components: air-conditioning box assembly, PDU, air-conditioning compressor, air conditioner PTC, vehicle control unit, AC switch, refrigerant pressure switch, PTC temperature controller, air-conditioning relay K1, air-conditioning relay K2, air-conditioning relay K3 and PTC key switch. The vehicle control unit is used for receiving enabling signals of the air conditioner PTC and the air conditioner compressor. The air conditioning box assembly receives the knob indication, controls the rotating speed of the blower appliance and simultaneously supplies power to the AC switch. The AC switch is connected with the sensor of the air-conditioning evaporating dish temperature controller in series, and when the AC switch is closed, the air-conditioning evaporating dish temperature controller detects the temperature of the evaporating dish at the moment, so that the internal switch thereof is in on-off two states. One end of the coil end of the air-conditioning relay K1 is connected with a temperature control signal output pin. Therefore, the air conditioner control system of the new energy commercial vehicle can realize the unique output of the refrigeration and heating mode without a controller.
Description
Technical Field
The utility model relates to the technical field of new energy automobile control systems, in particular to an air conditioner control system of a new energy commercial vehicle.
Background
As shown in fig. 1, an air conditioner peripheral circuit on an existing new energy vehicle includes: air-conditioning box assembly, PDU, vehicle control unit, PTC key switch, refrigerant pressure switch, air conditioner PTC, air conditioner evaporating dish temperature controller, air condition compressor and PTC temperature controller. The vehicle control unit is used for receiving the air conditioner PTC and the compressor enabling signal and controlling high-voltage or low-voltage power supply of the air conditioner PTC and the compressor enabling signal through CAN communication and hard wires. The air-conditioning box assembly judges whether temperature control output (-) is output or not according to the temperature of the adjusting knob and the evaporating dish, one end of the PTC key switch is connected with the ON gear power supply, and the other end of the PTC key switch is connected with the PTC temperature controller. When a user refrigerates, the AC switch is closed, the knob of the air-conditioning box assembly is not in an OFF gear, the temperature control signal is output and is directly received by the port of the vehicle control unit through the refrigerant pressure switch, and the compressor high-pressure output of the PDU is controlled. On the contrary, when the user heats, the PTC switch is closed, the enabling signal is directly received by the port of the vehicle control unit through the PTC key switch, and the high-voltage output of the compressor of the PDU is controlled. The manual control air conditioner control circuit cannot achieve heating and refrigerating differentiation, and the other opposite mode can be operated no matter in a refrigerating mode or a heating mode, so that the manual control air conditioner control circuit does not have a function of preventing mistaken touch.
The information disclosed in this background section is only for enhancement of understanding of the general background of the utility model 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.
SUMMERY OF THE UTILITY MODEL
The utility model aims to provide an air conditioner control system of a new energy commercial vehicle, which can realize the only output of the refrigeration and heating mode without a controller.
In order to achieve the above object, the present invention provides an air conditioning control system for a new energy commercial vehicle, comprising: air-conditioning box assembly, PDU, air-conditioning compressor, air conditioner PTC, vehicle control unit, AC switch, refrigerant pressure switch, PTC temperature controller, air-conditioning relay K1, air-conditioning relay K2, air-conditioning relay K3 and PTC key switch. The vehicle control unit is used for receiving enabling signals of the air conditioner PTC and the air conditioner compressor. The air conditioning box assembly receives the knob indication, controls the rotating speed of the blower appliance and simultaneously supplies power to the AC switch. The AC switch is connected with the sensor of the air-conditioning evaporating dish temperature controller in series, and when the AC switch is closed, the air-conditioning evaporating dish temperature controller detects the temperature of the evaporating dish at the moment, so that the internal switch thereof is in on-off two states. One end of a coil end of the air-conditioning relay K1 is connected with a temperature control signal output pin, the other end of the coil end is connected with an ON gear power supply of a cab, an input pin of a relay switch is connected with a PTC temperature controller, a normally closed contact is connected with a PTC key switch, and a normally open contact is in idle connection. One end of the coil end of the air-conditioning relay K2 is connected with a temperature control signal output pin, the other end of the coil end of the air-conditioning relay K2 is connected with an ON gear power supply of a cab, the input pin of a relay switch is grounded, a normally closed contact is in idle connection, and a normally open contact is connected with the input pin of an air-conditioning relay K3. One end of a coil end of the air-conditioning relay K3 is connected with the PTC key switch, the other end of the coil end is grounded, an input pin of the relay switch is connected with a normally open contact of the air-conditioning relay K2, the normally closed contact is connected with the refrigerant pressure switch, and the normally open contact is in idle connection. The PTC key switch is a normally open switch, one end of the switch is connected with the ON gear of the cab, and the other end of the switch is connected with the normally closed contact of the air-conditioning relay K1 and the coil end of the air-conditioning relay K3.
In an embodiment of the utility model, the vehicle control unit controls the high-voltage or low-voltage power supply of the air conditioner PTC and the air conditioner compressor through CAN communication and hard wire.
In one embodiment of the present invention, switching on and off two states includes: and when the temperature of the evaporating dish is not lower than a set value, the internal switch is in a conducting state, and a temperature control signal is output. And when the temperature of the evaporating dish is lower than a set value, the evaporating dish is in a suspended state.
In one embodiment of the utility model, one end of the refrigerant pressure switch is connected with a normally closed contact of an air conditioner relay K3, and the other end is connected with a port 1 of the whole vehicle controller.
In one embodiment of the present invention, one end of the PTC thermostat is connected to the switch input pin of the air conditioner relay K1, and the other end is connected to the port 2 of the vehicle controller.
In an embodiment of the utility model, under a refrigeration condition, the AC switch is turned on, the PTC key switch is turned OFF, the knob of the air conditioning box assembly is not in an OFF state, a temperature control signal is output, the coil of the air conditioning relay K1 is closed, the coil of the air conditioning relay K2 is closed, the port 1 of the vehicle controller receives a compressor enable signal, the high-pressure output enable of the compressor of the all-in-one controller is controlled, the low-pressure module of the compressor controller is enabled, and the air conditioning compressor works.
In an embodiment of the utility model, under a heating working condition, the AC switch is turned off, the PTC key switch is turned on, no temperature control signal is output, the air conditioning relay K1 is a normally closed contact, the port 2 of the vehicle controller receives the PTC enable signal, and controls the PTC high-voltage output enable of the all-in-one controller, and the PTC operates.
Compared with the prior art, the air conditioner control system of the new energy commercial vehicle has the following beneficial effects:
1. compared with the common manual air conditioner peripheral circuit design which cannot distinguish heating and cooling, the other opposite mode can operate no matter in the cooling mode or the heating mode, and the utility model can realize the only output of the cooling and heating mode without a controller;
2. the utility model has the function of preventing the false touch of air-conditioning mode switching according to the connection and transmission relationship of the relay, the switch and various electric signals;
3. the temperature control signal output in the utility model is 12V-, the PTC key switch is a non-reset normally open switch, the PTC temperature controller is in a normally closed state, and the refrigerant pressure switch is in a normally open state when the refrigerant pressure is insufficient;
4. compared with an electric air conditioner, the manual air conditioner can also realize the functions of refrigerating and heating and preventing accidental touch, and meanwhile, the structure and the principle are simpler and the cost is lower.
Drawings
FIG. 1 is a schematic circuit diagram of a prior art air conditioning control system;
fig. 2 is a schematic circuit diagram of an air conditioning control system of a new energy commercial vehicle according to an embodiment of the utility model.
Description of the main reference numerals:
1-air-conditioning box assembly, 2-vehicle controller, 3-AC switch, 4-refrigerant pressure switch, 5-PTC temperature controller, 6-air-conditioning relay K1, 7-air-conditioning relay K2, 8-air-conditioning relay K3, 9-PTC key switch.
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.
Fig. 2 is a schematic circuit diagram of an air conditioning control system of a new energy commercial vehicle according to an embodiment of the utility model. As shown in fig. 2, an air conditioning control system for a new energy commercial vehicle according to a preferred embodiment of the present invention includes: the air conditioner comprises an air conditioner box assembly 1, a PDU (power distribution unit), an air conditioner compressor, an air conditioner PTC (positive temperature coefficient), a vehicle control unit 2, an AC (alternating current) switch 3, a refrigerant pressure switch 4, a PTC (positive temperature coefficient) temperature controller 5, an air conditioner relay K16, an air conditioner relay K27, an air conditioner relay K38 and a PTC key switch 9. The vehicle control unit 2 is used for receiving enabling signals of the air conditioner PTC and the air conditioner compressor. The air conditioning cabinet assembly 1 receives the knob indication, controls the rotating speed of the blower appliance and simultaneously supplies power to the AC switch 3. The AC switch 3 is connected with the sensor of the air conditioner evaporating dish temperature controller in series, and when the AC switch 3 is closed, the PTC key switch 9 detects the temperature of the evaporating dish at the moment through the air conditioner evaporating dish temperature controller, so that two states of on-off are embodied. One end of the coil end of the air-conditioning relay K16 is connected with a temperature control signal output pin, the other end of the coil end is connected with an ON gear power supply of a cab, the input pin of a relay switch is connected with a PTC temperature controller, a normally closed contact is connected with a PTC key switch 9, and a normally open contact is in idle connection. One end of the coil end of the air-conditioning relay K27 is connected with a temperature control signal output pin, the other end of the coil end of the air-conditioning relay K27 is connected with an ON gear power supply of a cab, the input pin of a relay switch is grounded, a normally closed contact is in idle connection, and a normally open contact is connected with the input pin of an air-conditioning relay K38. One end of a coil end of the air-conditioning relay K38 is connected with the PTC key switch 9, the other end of the coil end is grounded, an input pin of the relay switch is connected with a normally open contact of the air-conditioning relay K27, the normally closed contact is connected with the refrigerant pressure switch 4, and the normally open contact is in air connection. The PTC key switch 9 is a normally open switch, one end of the switch is connected with the ON gear of the cab, and the other end is connected with the normally closed contact of the air-conditioning relay K16 and the coil end of the air-conditioning relay K38.
In an embodiment of the present invention, the vehicle control unit 2 controls the high-voltage or low-voltage power supply of the air conditioner PTC and the air conditioner compressor through CAN communication and hard wire.
In one embodiment of the present invention, switching on and off two states includes: and when the temperature of the evaporating dish is not lower than a set value, the internal switch is in a conducting state, and a temperature control signal is output. And when the temperature of the evaporating dish is lower than a set value, the evaporating dish is in a suspended state.
In one embodiment of the present invention, one end of the refrigerant pressure switch 4 is connected to the normally closed contact of the air conditioner relay K38, and the other end is connected to the port 1 of the vehicle control unit 2.
In an embodiment of the present invention, one end of the PTC temperature controller 5 is connected to the switch input pin of the air conditioner relay K16, and the other end is connected to the port 2 of the vehicle controller 2.
In an embodiment of the utility model, under a refrigeration condition, the AC switch 3 is turned on, the PTC key switch 9 is turned OFF, the knob of the air conditioning box assembly 1 is not turned OFF, a temperature control signal is output, the coil of the air conditioning relay K16 is closed, the air conditioning relay K27 is closed, the port 1 of the vehicle controller 2 receives a compressor enable signal, the high-pressure output enable of the compressor of the all-in-one controller is controlled, the low-pressure module of the compressor controller is enabled, and the air conditioning compressor works.
In an embodiment of the utility model, under a heating working condition, the AC switch 3 is turned off, the PTC key switch 9 is turned on, no temperature control signal is output, the air conditioning relay K16 is a normally closed contact, the port 2 of the vehicle controller 2 receives a PTC enable signal, and controls the PTC high-voltage output enable of the all-in-one controller, and the PTC operates.
In practical application, the air conditioning control system of the new energy commercial vehicle comprises: the air conditioner comprises an air conditioner box assembly 1, a relay, a PDU (protocol data unit), a vehicle control unit 2, a refrigerant pressure switch 4, an air conditioner PTC (positive temperature coefficient), an air conditioner evaporating dish temperature controller, an air conditioner compressor, a PTC key switch 9 and a PTC temperature controller 5. And the vehicle control unit 2 is used for receiving the air conditioner PTC and the compressor enabling signal and controlling the high-voltage or low-voltage power supply of the air conditioner PTC and the compressor enabling signal through CAN communication and hard wires. The air-conditioning box assembly 1 judges whether temperature control output (-) is output or not according to the temperature of the adjusting knob and the evaporating dish, when a user refrigerates, the AC switch 3 is closed, the knob of the air-conditioning box assembly 1 is not OFF, temperature control signals are output, the coil of the air-conditioning relay K16 is attracted to the switch, the air-conditioning relay K27 is attracted, and the whole vehicle controller 2 can only receive compressor enabling signals through the refrigerant pressure switch 4 and controls the compressor high-pressure output of the PDU. On the contrary, when the user heats, the PTC switch is closed, no temperature control signal is output, the air conditioning relay K16 is a normally closed contact, and the vehicle controller 2 can only receive the PTC enable signal through the PTC key switch 9 to control the PTC high-voltage output of the PDU.
In summary, the air conditioning control system for the new energy commercial vehicle has the following beneficial effects:
1. compared with the common manual air conditioner peripheral circuit design which cannot distinguish heating and cooling, the other opposite mode can operate no matter in the cooling mode or the heating mode, and the utility model can realize the only output of the cooling and heating mode without a controller;
2. the utility model has the function of preventing the false touch of air-conditioning mode switching according to the connection and transmission relationship of the relay, the switch and various electric signals;
3. the temperature control signal output in the utility model is 12V-, the PTC key switch is a non-reset normally open switch, the PTC temperature controller is in a normally closed state, and the refrigerant pressure switch is in a normally open state when the refrigerant pressure is insufficient;
4. compared with an electric air conditioner, the manual air conditioner can also realize the functions of refrigerating and heating and preventing accidental touch, and meanwhile, the structure and the principle are simpler and the cost is lower.
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 utility model 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 utility model and its practical application to enable one skilled in the art to make and use various exemplary embodiments of the utility model and various alternatives and modifications as are suited to the particular use contemplated. It is intended that the scope of the utility model be defined by the claims and their equivalents.
Claims (7)
1. The utility model provides an air conditioner control system of new forms of energy commercial vehicle which characterized in that includes: the air conditioner comprises an air conditioner box assembly, a PDU (power distribution unit), an air conditioner compressor, an air conditioner PTC (positive temperature coefficient), a vehicle control unit, an AC (alternating current) switch, a refrigerant pressure switch, a PTC temperature controller, an air conditioner relay K1, an air conditioner relay K2, an air conditioner relay K3 and a PTC key switch;
the vehicle control unit is used for receiving enabling signals of the air conditioner PTC and the air conditioner compressor;
the air conditioning box assembly receives a knob indication, controls the rotating speed of the blower appliance and simultaneously supplies power to the AC switch;
the AC switch is connected with a sensor of the air-conditioning evaporating dish temperature controller in series, and when the AC switch is closed, the air-conditioning evaporating dish temperature controller detects the temperature of the evaporating dish at the moment, so that the internal switch of the air-conditioning evaporating dish temperature controller shows two states of on-off;
one end of a coil end of the air-conditioning relay K1 is connected with a temperature control signal output pin, the other end of the coil end is connected with an ON-gear power supply of a cab, an input pin of a relay switch is connected with a PTC temperature controller, a normally closed contact is connected with a PTC key switch, and a normally open contact is in idle connection;
one end of a coil end of the air-conditioning relay K2 is connected with a temperature control signal output pin, the other end of the coil end of the air-conditioning relay K2 is connected with an ON-gear power supply of a cab, an input pin of a relay switch is grounded, a normally closed contact is in idle connection, and a normally open contact is connected with an input pin of an air-conditioning relay K3;
one end of a coil end of the air-conditioning relay K3 is connected with the PTC key switch, the other end of the coil end is grounded, an input pin of the relay switch is connected with a normally open contact of the air-conditioning relay K2, the normally closed contact is connected with the refrigerant pressure switch, and the normally open contact is in idle connection;
the PTC key switch is a normally open switch, one end of the switch is connected with the ON gear of the cab, and the other end of the switch is connected with the normally closed contact of the air-conditioning relay K1 and the coil end of the air-conditioning relay K3.
2. The air conditioning control system of the new energy commercial vehicle as claimed in claim 1, wherein the vehicle control unit controls the high or low voltage power supply of the air conditioner PTC and the air conditioner compressor through CAN communication and hard wire.
3. The air conditioning control system of a new energy commercial vehicle as claimed in claim 1, wherein the two states of on and off include:
when the temperature of the evaporating dish is not lower than a set value, the internal switch is in a conducting state, and a temperature control signal is output;
and when the temperature of the evaporating dish is lower than a set value, the evaporating dish is in a suspended state.
4. The climate control system of a new energy commercial vehicle as claimed in claim 1, wherein one end of the refrigerant pressure switch is connected to the normally closed contact of the climate relay K3, and the other end is connected to the port 1 of the vehicle control unit.
5. The climate control system of claim 1, wherein the PTC thermostat is connected to the switch input pin of the climate relay K1 at one end and to the port 2 of the vehicle controller at the other end.
6. The air conditioning control system of the new energy commercial vehicle as claimed in claim 1, wherein in a cooling condition, the AC switch is turned on, the PTC button switch is turned OFF, the knob of the air conditioning box assembly is not turned OFF, the temperature control signal is outputted, the coil of the air conditioning relay K1 is turned on, the air conditioning relay K2 is turned on, the port 1 of the vehicle controller receives the compressor enable signal, controls the high-pressure output enable of the compressor of the all-in-one controller, the low-pressure module of the compressor controller enables, and the air conditioning compressor operates.
7. The air conditioning control system of the new energy commercial vehicle as claimed in claim 1, wherein in the heating condition, the AC switch is turned off, the PTC button switch is turned on, no temperature control signal is output, the air conditioning relay K1 is a normally closed contact, and the vehicle controller port 2 receives the PTC enable signal to control the PTC high-voltage output enable of the all-in-one controller, so that the PTC operates.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121668828.6U CN215850637U (en) | 2021-07-21 | 2021-07-21 | Air conditioner control system of new energy commercial vehicle |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121668828.6U CN215850637U (en) | 2021-07-21 | 2021-07-21 | Air conditioner control system of new energy commercial vehicle |
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| CN215850637U true CN215850637U (en) | 2022-02-18 |
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| CN202121668828.6U Active CN215850637U (en) | 2021-07-21 | 2021-07-21 | Air conditioner control system of new energy commercial vehicle |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113635739A (en) * | 2021-07-21 | 2021-11-12 | 广西玉柴新能源汽车有限公司 | Air conditioner control system of new energy commercial vehicle |
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2021
- 2021-07-21 CN CN202121668828.6U patent/CN215850637U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113635739A (en) * | 2021-07-21 | 2021-11-12 | 广西玉柴新能源汽车有限公司 | Air conditioner control system of new energy commercial vehicle |
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