CN214164680U - Pure electric heavy-duty air conditioner circuit - Google Patents
Pure electric heavy-duty air conditioner circuit Download PDFInfo
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- CN214164680U CN214164680U CN202022507161.3U CN202022507161U CN214164680U CN 214164680 U CN214164680 U CN 214164680U CN 202022507161 U CN202022507161 U CN 202022507161U CN 214164680 U CN214164680 U CN 214164680U
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- temperature
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Abstract
The utility model relates to a pure electric heavy truck air-conditioning circuit, which mainly comprises an air-conditioning controller (1), a PTC (positive temperature coefficient) device (2), a vehicle control unit (3), a high-voltage distribution box (4), a core surface temperature sensor (5) and an air-conditioning air outlet temperature sensor (6); the utility model discloses an increase PTC's temperature controller, core surface's temperature sensor, air conditioner air outlet's temperature sensor and realize the monitoring to PTC heating temperature to heating temperature's judgement, disconnection VCU and PTC's line connection when the PTC high temperature. Simultaneously, the high-tension electricity that VCU control high-pressure box broke off PTC realizes the excess temperature protection to PTC, the utility model discloses a multiple excess temperature protection can effectually avoid the overheated risk of catching fire that exists when using PTC to carry out the air conditioner heating for a long time at electricelectric dynamic heavy card. Meanwhile, the power supply of the whole vehicle high-voltage circuit to the PTC is cut off, the risk of high-voltage electric leakage of the whole vehicle is effectively reduced, and the safety of a high-voltage electric appliance is ensured.
Description
Technical Field
The utility model belongs to the technical field of electricelectric moves heavily calorie of card, concretely relates to electricelectric moves heavily calorie of air conditioner circuit.
Background
With the development of science and technology and the guidance of national policies, the development of new energy pure electric heavy trucks is rapidly promoted. Compared with the traditional 24V air conditioning system for the heavy truck, the principle of the pure electric air conditioning system for the heavy truck is changed newly. The heat source of the traditional heavy truck air conditioner is engine water tank cooling water, and heat is guided into an air conditioning system through an air blower. The pure electric heavy truck is not provided with an engine, and the heat of the air conditioner is provided by PTC heating; the PTC as high-voltage high-power electric equipment has the risk of overheating and catching fire in the actual long-term use.
SUMMERY OF THE UTILITY MODEL
The utility model provides a pure electric heavy truck air conditioning circuit, the technical problem who solves is: the hidden danger that the PTC is overheated to cause the conflagration is solved to the warm braw in-process of using at present pure electric heavy truck for a long time at the vehicle, ensures PTC's safe handling.
In order to solve the technical problem, the utility model provides a pure electric heavy calorie of air conditioner circuit, its characterized in that: the air conditioner controller mainly comprises an air conditioner controller (1), a PTC (positive temperature coefficient) device (2), a vehicle control unit (3), a high-voltage distribution box (4), a core body surface temperature sensor (5) and an air conditioner air outlet temperature sensor (6); an over-temperature protection switch is arranged in the PTC (2), the switch is in a normally closed state, a PTC request signal is transmitted to the VCU (3) of the vehicle controller through the over-temperature protection switch, and the VCU (3) of the vehicle controller sends a signal to the high-voltage distribution box (4) through the compressor controller after receiving the PTC request signal to supply high-voltage power to the PTC; the air-conditioning outlet temperature sensor (6) is used for monitoring the temperature of the air-conditioning outlet and sending the temperature to the vehicle control unit; the core body surface temperature sensor is used for monitoring the surface temperature of the PTC core body and sending the surface temperature to the vehicle control unit; the vehicle control unit (3) sends the start-stop signal to the compressor controller, and the compressor controller controls the on-off of the high-voltage power supply of the PTC (2) by controlling the high-voltage distribution box.
Has the advantages that: the utility model discloses an increase the temperature controller of PTC (semiconductor heating device), the temperature sensor on core surface, air conditioner air outlet's temperature sensor and realize the monitoring to PTC heating temperature to heating temperature's judgement, disconnection VCU and PTC's line connection when the PTC high temperature. Simultaneously, the high-tension electricity that VCU control high-pressure box broke off PTC realizes the excess temperature protection to PTC, the utility model discloses a multiple excess temperature protection can effectually avoid the overheated risk of catching fire that exists when using PTC to carry out the air conditioner heating for a long time at electricelectric dynamic heavy card. Meanwhile, the power supply of the whole vehicle high-voltage circuit to the PTC is cut off, the risk of high-voltage electric leakage of the whole vehicle is effectively reduced, and the safety of a high-voltage electric appliance is ensured.
Drawings
Fig. 1 is a schematic diagram of an air conditioner circuit according to the present invention.
Detailed Description
In order to make the objects, contents and advantages of the present invention clearer, the following description will be made in further detail with respect to the embodiments of the present invention.
The utility model provides a pure electric heavy truck air conditioning circuit, mainly by air conditioner controller (1), PTC (2), vehicle control unit (3), high voltage distribution box (4), core surface temperature sensor (5), air conditioner air outlet temperature sensor (6) constitute;
an over-temperature protection switch is arranged in the PTC (2), the switch is in a normally closed state, a PTC request signal is transmitted to the VCU (3) of the vehicle controller through the over-temperature protection switch, and the VCU (3) of the vehicle controller sends a signal to the high-voltage distribution box (4) through the compressor controller after receiving the PTC request signal; when the PTC (2) is heated to be over-temperature, the PTC (2) is disconnected with the over-temperature protection switch after reaching the alarm temperature from the temperature controller, the PTC request signal is disconnected with the vehicle controller (3), and the vehicle controller (3) cuts off the high-voltage power supply of the PTC (2);
the air conditioner air outlet temperature sensor (6) is used for monitoring the temperature of an air conditioner air outlet and sending the temperature to the vehicle control unit, and when the air conditioner air outlet temperature sensor (6) monitors that the temperature of the air outlet is abnormal, the vehicle control unit (3) cuts off the high-voltage power supply of the PTC (2);
the core body surface temperature sensor is used for monitoring the surface temperature of the PTC core body and sending the surface temperature to the vehicle control unit, when the core body surface temperature sensor (5) monitors that the surface temperature of the core body is overhigh, an alarm signal is sent to the vehicle control unit (3), and the vehicle control unit receives the signal to cut off the high-voltage power supply of the PTC (2);
the vehicle control unit (3) sends the start-stop signal to the compressor controller, and the compressor controller controls the on-off of the high-voltage power supply of the PTC (2) by controlling the high-voltage distribution box.
As shown in figure 1, when a driver uses air-conditioning warm air, D15 on the air-conditioning controller (1) is pressed, and an over-temperature protection switch arranged in the PTC (2) is in a normally closed state; the PTC request signal is transmitted to the VCU (3) of the vehicle controller through the switch and the wire harness, and the VCU (3) of the vehicle controller sends a signal to the high-voltage distribution box (4) through the bus after receiving the PTC request signal; the high-voltage distribution box (4) outputs high voltage to the PTC (2); the PTC (2) is normally operated after being supplied with high voltage power, and generates a large amount of heat to supply power to the air conditioning system; when the PTC (2) is heated to be over-temperature, the PTC (2) is disconnected with the over-temperature protection switch after reaching the alarm temperature from the temperature controller; the PTC request signal is disconnected with the whole vehicle controller (3); the vehicle control unit (3) transmits information to the high-voltage distribution box (4) through the bus, and high voltage of the PTC (2) is cancelled; the PTC (2) does not work any more after the high voltage is cut off, and does not generate heat any more to achieve the protection effect; meanwhile, the second protection method: when the core surface temperature sensor (5) monitors that the core surface temperature is too high (110 ℃), an alarm signal is sent to the vehicle control unit (3), and the vehicle control unit receives a signal disconnection high voltage; the PTC (2) is not heated any more, so that the protection effect is achieved. The third protection mode is as follows: when the air outlet temperature sensor (6) of the air conditioner monitors that the temperature of the air outlet is abnormal (higher than 65 ℃), the vehicle control unit (3) cuts off the high-voltage power supply of the PTC (2). Thereby achieving the protection effect.
The foregoing is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, a plurality of modifications and variations can be made without departing from the technical principle of the present invention, and these modifications and variations should also be considered as the protection scope of the present invention.
Claims (4)
1. The utility model provides a pure electric heavy calorie of air conditioner circuit which characterized in that: the air conditioner controller mainly comprises an air conditioner controller (1), a PTC (positive temperature coefficient) device (2), a vehicle control unit (3), a high-voltage distribution box (4), a core body surface temperature sensor (5) and an air conditioner air outlet temperature sensor (6); an over-temperature protection switch is arranged in the PTC (2), the switch is in a normally closed state, a PTC request signal is transmitted to the vehicle control unit (3) through the over-temperature protection switch, and the vehicle control unit (3) sends a signal to the high-voltage distribution box (4) through the compressor controller after receiving the PTC request signal to supply high-voltage power to the PTC; the air-conditioning outlet temperature sensor (6) is used for monitoring the temperature of the air-conditioning outlet and sending the temperature to the vehicle control unit; the core body surface temperature sensor is used for monitoring the surface temperature of the PTC core body and sending the surface temperature to the vehicle control unit; the vehicle control unit (3) sends the start-stop signal to the compressor controller, and the compressor controller controls the on-off of the high-voltage power supply of the PTC (2) by controlling the high-voltage distribution box.
2. A pure electric heavy-duty air conditioner circuit according to claim 1, characterized in that: the PTC (2) is provided with a temperature controller, and when the PTC (2) is heated to be over-temperature, the PTC (2) is provided with the temperature controller to reach the alarm temperature and then the over-temperature protection switch is disconnected.
3. A pure electric heavy-duty air conditioner circuit according to claim 1, characterized in that: when the air outlet temperature sensor (6) of the air conditioner monitors that the temperature of the air outlet is abnormal, the vehicle control unit (3) cuts off the high-voltage power supply of the PTC (2).
4. A pure electric heavy-duty air conditioner circuit according to claim 1, characterized in that: when the core surface temperature sensor (5) monitors that the core surface temperature is overhigh, an alarm signal is sent to the vehicle control unit (3), and the vehicle control unit receives the signal to disconnect the high-voltage power supply of the PTC (2).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022507161.3U CN214164680U (en) | 2020-11-03 | 2020-11-03 | Pure electric heavy-duty air conditioner circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022507161.3U CN214164680U (en) | 2020-11-03 | 2020-11-03 | Pure electric heavy-duty air conditioner circuit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN214164680U true CN214164680U (en) | 2021-09-10 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202022507161.3U Active CN214164680U (en) | 2020-11-03 | 2020-11-03 | Pure electric heavy-duty air conditioner circuit |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN214164680U (en) |
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2020
- 2020-11-03 CN CN202022507161.3U patent/CN214164680U/en active Active
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