CN111923684A - New energy bus air conditioning system and energy-saving control method - Google Patents

New energy bus air conditioning system and energy-saving control method Download PDF

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Publication number
CN111923684A
CN111923684A CN202010727976.4A CN202010727976A CN111923684A CN 111923684 A CN111923684 A CN 111923684A CN 202010727976 A CN202010727976 A CN 202010727976A CN 111923684 A CN111923684 A CN 111923684A
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CN
China
Prior art keywords
vehicle
air conditioning
air conditioner
conditioning device
main controller
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Pending
Application number
CN202010727976.4A
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Chinese (zh)
Inventor
李晨
王波
范志先
刘涛
陈振国
赵永刚
冯汝广
刘雷
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Zhongtong Bus Holding Co Ltd
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Zhongtong Bus Holding Co Ltd
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Application filed by Zhongtong Bus Holding Co Ltd filed Critical Zhongtong Bus Holding Co Ltd
Priority to CN202010727976.4A priority Critical patent/CN111923684A/en
Publication of CN111923684A publication Critical patent/CN111923684A/en
Pending legal-status Critical Current

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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
    • B60H1/00642—Control systems or circuits; Control members or indication devices for heating, cooling or ventilating devices
    • B60H1/00735—Control systems or circuits characterised by their input, i.e. by the detection, measurement or calculation of particular conditions, e.g. signal treatment, dynamic models
    • 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
    • B60H1/00357—Air-conditioning arrangements specially adapted for particular vehicles
    • B60H1/00371—Air-conditioning arrangements specially adapted for particular vehicles for vehicles carrying large numbers of passengers, e.g. buses
    • 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
    • B60H1/00357—Air-conditioning arrangements specially adapted for particular vehicles
    • B60H1/00385—Air-conditioning arrangements specially adapted for particular vehicles for vehicles having an electrical drive, e.g. hybrid or fuel cell
    • B60H1/00392—Air-conditioning arrangements specially adapted for particular vehicles for vehicles having an electrical drive, e.g. hybrid or fuel cell for electric vehicles having only electric drive means
    • 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
    • B60H1/00642—Control systems or circuits; Control members or indication devices for heating, cooling or ventilating devices
    • B60H1/00735—Control systems or circuits characterised by their input, i.e. by the detection, measurement or calculation of particular conditions, e.g. signal treatment, dynamic models
    • B60H1/00764—Control systems or circuits characterised by their input, i.e. by the detection, measurement or calculation of particular conditions, e.g. signal treatment, dynamic models the input being a vehicle driving condition, e.g. speed
    • 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
    • B60H1/00642—Control systems or circuits; Control members or indication devices for heating, cooling or ventilating devices
    • B60H1/00814—Control systems or circuits characterised by their output, for controlling particular components of the heating, cooling or ventilating installation
    • B60H1/00821—Control systems or circuits characterised by their output, for controlling particular components of the heating, cooling or ventilating installation the components being ventilating, air admitting or air distributing devices
    • B60H1/00864—Ventilators and damper doors
    • 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
    • B60H1/00642—Control systems or circuits; Control members or indication devices for heating, cooling or ventilating devices
    • B60H1/00814—Control systems or circuits characterised by their output, for controlling particular components of the heating, cooling or ventilating installation
    • B60H1/00878—Control systems or circuits characterised by their output, for controlling particular components of the heating, cooling or ventilating installation the components being temperature regulating devices
    • 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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  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Mechanical Engineering (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Sustainable Development (AREA)
  • Sustainable Energy (AREA)
  • Air-Conditioning For Vehicles (AREA)

Abstract

The utility model provides a new forms of energy vehicle air conditioning system and energy-conserving control method, changed vehicle inner space air conditioning, control logic is simple, rough at present, and the high-efficient control of vehicle air conditioning is realized to the state of working all the time that the control switch opened corresponding device. The technical scheme is that the air conditioning system comprises a main controller, an air conditioning device arranged in a vehicle and a control switch used for controlling the air conditioning device, wherein the main controller is respectively connected with the control switch and an electric signal control end of the air conditioning device, and is connected with a vehicle controller of the vehicle and used for acquiring the running data of the vehicle; the main controller is used for calculating power supply requirements according to vehicle operation data, and controlling the electric signal control end of the air conditioning device to be used for turning on or off the air conditioning device when the vehicle driving battery meets the power supply requirements and the control switch is in an on state.

Description

New energy bus air conditioning system and energy-saving control method
Technical Field
The disclosure relates to the technical field of vehicle control, in particular to an air conditioning system of a new energy bus and an energy-saving control method.
Background
The statements in this section merely provide background information related to the present disclosure and may not necessarily constitute prior art.
With the gradual enhancement of environmental awareness and the increasing increase of environmental pollution, the development of energy-saving and environment-friendly new energy automobiles is considered as one of the realization ways of the automobile industry, and for passenger cars, more passengers are available on the cars, and the driving time of drivers is longer, so that the air quality, the temperature in the cars and the like on the cars need to be adjusted in various forms to ensure the comfort of drivers and passengers. On a new energy passenger car which is mainly characterized by pure electric drive, energy is completely derived from a vehicle-mounted power battery, so that the utilization of electric quantity needs to be accurately planned.
According to statistics, the energy consumption of the pure electric air conditioner for the new energy bus accounts for about 1/3 of that of the whole bus, and the energy efficiency ratio is very low. The inventor finds that the device for realizing the air conditioning in the vehicle is low in intelligence and generally controlled by a manual switch, so that in order to prolong the driving range, many drivers do not need to drive the air conditioner as much as possible even in a cold/hot environment, and the ventilating fan for air conditioning is not driven in some cases. Therefore, the air quality and the ambient temperature in the whole vehicle running in extremely cold and hot areas are not effectively regulated, drivers and passengers cannot feel comfortable, and the driving experience of the new energy bus is reduced.
Disclosure of Invention
The air conditioning system comprises a control switch, a control device and a control system, wherein the control device is connected with the control switch, the control device is connected with the control device, and the control device is connected with the control device.
In order to achieve the purpose, the following technical scheme is adopted in the disclosure:
one or more embodiments provide a new energy vehicle air conditioning system, which includes a main controller, an air conditioning device arranged in a vehicle, and a control switch for controlling the air conditioning device, wherein the main controller is respectively connected with the control switch and an electric signal control end of the air conditioning device, and is connected with a vehicle controller of the vehicle for acquiring running data of the vehicle; the main controller is used for calculating power supply requirements according to vehicle operation data, and controlling the electric signal control end of the air conditioning device to be used for turning on or off the air conditioning device when the vehicle driving battery meets the power supply requirements and the control switch is in an on state.
One or more embodiments provide an energy-saving control method for an air conditioning system of a new energy bus, comprising the following steps:
acquiring running data of a vehicle;
and judging whether the dischargeable power of the vehicle driving battery meets the driving power supply requirement or not according to the acquired data, and judging whether a control switch corresponding to the air conditioning device is in an open state or not, if so, the corresponding air conditioning device is in an openable state, and if not, closing the corresponding air conditioning device.
Compared with the prior art, the beneficial effect of this disclosure is:
the vehicle air conditioning device is turned on and off by acquiring signals of the control switch and controlling an electric signal control end of the device through the main controller, the whole vehicle running state is judged through the main controller, the air conditioning device is controlled and mainly judged and controlled according to the residual energy of the battery and the required energy of the vehicle, over-discharge of the battery is reduced, the power battery is ensured to be in a shallow charging and shallow discharging state, the service life of the battery is prolonged, air conditioning is intelligently controlled, the utilization rate of an air conditioning system is improved, and energy waste is reduced.
Drawings
The accompanying drawings, which are included to provide a further understanding of the disclosure, illustrate embodiments of the disclosure and together with the description serve to explain the disclosure and not to limit the disclosure.
Fig. 1 is a block diagram of a new energy vehicle air conditioning system of embodiment 1 of the present disclosure;
fig. 2 is a flowchart of a control method of embodiment 2 of the present disclosure;
wherein: s1, an air conditioner, S2, a ventilation fan, S3, an electric heating device, S4 and an electric defrosting device; k1, an air conditioner panel, K2, a ventilator switch, K3, an electric heater switch, K4 and an electric defrosting switch.
The specific implementation mode is as follows:
the present disclosure is further described with reference to the following drawings and examples.
It should be noted that the following detailed description is exemplary and is intended to provide further explanation of the disclosure. Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this disclosure belongs.
It is noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of example embodiments according to the present disclosure. As used herein, the singular forms "a", "an" and "the" are intended to include the plural forms as well, and it should be understood that when the terms "comprises" and/or "comprising" are used in this specification, they specify the presence of stated features, steps, operations, devices, components, and/or combinations thereof, unless the context clearly indicates otherwise. It should be noted that, in the case of no conflict, the embodiments and features in the embodiments in the present disclosure may be combined with each other. The embodiments will be described in detail below with reference to the accompanying drawings.
Example 1
In the technical solution disclosed in one or more embodiments, as shown in fig. 1, an air conditioning system of a new energy vehicle includes a main controller, an air conditioning device disposed in the vehicle, and a control switch for controlling the air conditioning device, wherein the main controller is respectively connected with the control switch and an electric signal control end of the air conditioning device, and the main controller is connected with a vehicle controller of the vehicle for acquiring operation data of the vehicle; the main controller is used for calculating power supply requirements according to vehicle operation data, and controlling the electric signal control end of the air conditioning device to be used for turning on or off the air conditioning device when the vehicle driving battery meets the power supply requirements and the control switch is in an on state.
The opening and closing of the air conditioning device are realized by acquiring signals of the control switch and controlling the electric signal control end of the device through the main controller, the running state of the whole vehicle is judged through the main controller, the air conditioning device is controlled and mainly judged and controlled according to the residual energy of the battery and the required energy of the vehicle, the overdischarge of the battery is reduced, the power battery is ensured to be in a shallow charging and shallow discharging state, the service life of the battery is prolonged, the air conditioning is intelligently controlled, the utilization rate of an air conditioning system is improved, and the energy waste is reduced. The embodiment changes the state that the current control logic is simple and rough, and the corresponding device is opened by the control switch to work all the time, thereby realizing the high-efficiency control of the air conditioning of the vehicle.
Optionally, the operation data of the vehicle includes vehicle speed information V0Battery voltage information VB0Battery temperature information TB0And the state of charge SOC of the battery0The allowable charging and discharging power P of the battery0And the power P required by the drive system1。
Further, the operation data of the vehicle may further include a door opening signal M0And vehicle fault information F0The main controller is also configured to effect the turning off of the air conditioning device in the event of a vehicle failure or a vehicle door open condition.
With relatively large doors of vehicles, e.g. passenger cars, using a door opening signal M0The working state of each air conditioning system is controlled, and the frequency-variable air conditioner, the ventilation fan, the electric heater and the electric defrosting are forbidden to work when the passenger door is opened, so that the energy waste is reduced.
In some embodiments, the air conditioning device includes an air conditioner S1, a ventilator S2, an electric heater S3, and an electric defrosting S4, and the control output end of the main controller is connected to the electric signal control ends of the air conditioner S1, the ventilator S2, the electric heater S3, and the electric defrosting S4, respectively.
As a specific connection mode, the signal input end of the main controller is respectively connected with the air conditioner panel K1, the ventilator switch K2, the electric heater switch K3 and the electric defrosting switch K4, and the signal input end of the main controller is respectively connected with the electric signal control ends of the air conditioner S1, the ventilator S2, the electric heater S3 and the electric defrosting S4.
Optionally, in order to realize energy-saving and effective adjustment of temperature, the air conditioner S1 is a variable frequency air conditioner, and CAN be controlled by a CAN bus of a vehicle, so that the vehicle has a CAN control function.
For the integrated level that improves the device, be provided with display device, temperature-detecting device, air conditioner control switch and setting module at least on air conditioner panel K1, temperature-detecting device is used for detecting ambient temperature, and display device can be used for showing ambient temperature and setting temperature, and air conditioner control switch is used for receiving user's manual input signal, and the setting module can be used for setting up the setting value of temperature. The main controller is connected with the air conditioner panel, can directly collect temperature information, and outputs corresponding control signals to control the working frequency of the variable frequency air conditioner according to the temperature information, so that energy-saving operation is realized.
The air conditioner control of this embodiment is after opening control switch, main control unit judges the state of vehicle according to the running state of vehicle, judge whether can satisfy the condition of opening the air conditioner, consequently, the control switch of vehicle has been opened when the user, for guaranteeing the performance of vehicle, just can open the air conditioner of vehicle after intelligent judgement, and then carry out feedback adjustment according to the temperature in the car, the battery has been protected on the one hand, on the other hand can indicate the user in time to charge, make the electric quantity of vehicle sufficient, the life of extension vehicle greatly.
The corresponding display and detection device is arranged at the control switch of the air conditioner, so that the integration level of the system is improved, an independent display device and a temperature detection device do not need to be arranged, and the setting cost of the system is reduced.
Optionally, the ventilation fan S2 is disposed on the top of the vehicle body, and may be disposed on a sunroof of the vehicle, and the ventilation fan is turned on to exchange air between the inside of the vehicle and the outside.
Optionally, the electric heater S3 includes a first heater and a radiator, and may be disposed on a floor in the vehicle compartment for rapidly heating air in the vehicle at low temperature.
Alternatively, the electrical defrosting apparatus S4 may include a second heater, and a ventilation duct connected to the second heater, wherein an air outlet end of the ventilation duct is disposed at a lower end of the defrosting portion. Specifically, the defrosting portion on the vehicle includes a windshield, an instrument panel, a rearview mirror, and the like.
In some embodiments, the first heater and the second heater may employ any heaters, and may employ PTC heaters, respectively.
Example 2
The embodiment provides an energy-saving control method for an air conditioning system of a new energy bus, which can be implemented in a main controller of the air conditioning system, as shown in fig. 2, and includes the following steps:
step 1: acquiring running data of a vehicle;
step 2: and judging whether the dischargeable power of the vehicle driving battery meets the driving power supply requirement or not according to the acquired data, and judging whether a control switch corresponding to the air conditioning device is in an open state or not, if so, the corresponding air conditioning device is in an openable state, and if not, closing the corresponding air conditioning device.
In the embodiment, the switch control of the air conditioning device is performed by taking the priority requirement on the driving power of the motor as a main line, so that the battery can be ensured to be in a shallow discharge state, the over-discharge of the battery is avoided, and the service life of the battery is prolonged.
Further, the air conditioning device is closed when a failure of the entire vehicle occurs or the vehicle door is open.
When the corresponding air conditioning devices are in an openable state, it is necessary to determine whether each corresponding air conditioning device satisfies other opening conditions, and when the corresponding air conditioning device satisfies other opening conditions, the corresponding air conditioning device is opened. Different air conditioning devices and other starting conditions can be different, and corresponding control strategies can also be different. The following is a detailed description of each air conditioning apparatus.
For the air conditioner S1, when the control switch is in the on state, it indicates that the user wants to turn on the air conditioner; if the dischargeable power of the vehicle driving battery is judged to be larger than the driving power of the vehicle, when the vehicle starts or accelerates suddenly, the required power of the driving motor is larger, and at the moment, if the required power P of the driving motor is larger1Power P of battery allowing charging and discharging0If the power of the variable frequency air conditioner is reduced, the main controller can control the variable frequency air conditioner to directly stop running; otherwise, if the driving motor requires power P1<Allowable charging and discharging power P of battery0And the control switch of the air conditioner is in an on state, the control steps of the air conditioner may be as follows:
1) setting the running wind speed and the target temperature of the air conditioner;
2) judging passenger door opening signal M0If the air conditioner is opened, stopping the refrigeration of a compressor or the heating of a heater in the air conditioner and starting an air conditioner fan to work if the air conditioner is opened; otherwise, the air conditioner does not work;
3) when the air conditioner is started, the frequency of a frequency converter of the air conditioner is calculated according to the running wind speed requirement and the target temperature, and the running power of the air conditioner is controlled.
Specifically, the working process of the variable frequency air conditioner S1 is as follows: the method comprises the steps that firstly, an air conditioner panel is opened, the temperature and the wind speed are set, and a main controller receives an air conditioner panel opening signal, the set temperature and the set wind speed which are input by a variable frequency air conditioner control end. When the system controller receives the passenger door opening signal M0When the vehicle is opened, in order to prevent the heating and refrigerating effects from being reduced and reduce energy consumption, the variable frequency air conditioner prohibits the compressor refrigerating/heating device from heating under the control of the main controller 0, but the air conditioner fan can continuously work to keep the air in the vehicle fresh; when the passenger door is opened0When the compressor is closed, the working state of the compressor is changed into effective only by heating the refrigerating/heating device;
when the vehicle starts or accelerates suddenly, the required power of the driving motor is larger, and at the moment, if the required power P of the driving motor is larger1Power P of battery allowing charging and discharging0Then the main controller will control the frequency conversion airRegulating and reducing power or directly stopping operation;
waiting for the required power P of the driving motor1< allowable charging/discharging power P of battery0And when the temperature in the vehicle reaches a proper state, the main controller controls the variable frequency air conditioner to run at full power so as to rapidly and efficiently heat or refrigerate.
For the ventilator S2, the control method is: when the passenger door opening signal M0 is turned on, the ventilator S2 is controlled to stop working; when the passenger door open signal M0 is off and the ventilator switch K2 is on, the ventilator S2 continues to operate; that is, when the passenger door opening signal M0 is turned on, the main controller 0 controls the ventilator S2 to be turned off regardless of whether the ventilator switch K2 is turned on.
For the electric heater S3, the control method comprises the following steps:
1) when the passenger door opening signal M0 is turned on, the electric heater S3 does not work; that is, when the passenger door opening signal M0 is turned on, no matter whether the electric heater switch K3 is turned on, the electric heater S3 does not work under the control of the main controller.
2) When the passenger door opening signal M0 is turned off and the electric heater switch K3 is turned on, if the required power P1 of the driving motor is larger than the allowable charging and discharging power P0 of the battery, the main controller controls the electric heater not to work;
3) if the required power P1 of the driving motor is less than the allowable charging and discharging power P0 of the battery and the electric heater switch K3 is turned on, the main controller controls the electric heater S3 to work normally.
For the electric defrosting S4, the control method comprises the following steps:
1) when the passenger door opening signal M0 is opened, the electric defrosting S4 is controlled to stop working; that is, when the passenger door opening signal M0 is turned on, the electrical defrost S4 is not operated under the control of the main controller regardless of whether the electrical defrost switch K4 is turned on.
2) When the passenger door opening signal M0 is turned off and the electric defrost switch K4 is turned on, if the driving motor required power P1 > the battery allowable charging and discharging power P0, the main controller controls the electric defrost not to be operated.
3) If the required power P1 of the driving motor is less than the allowable charging and discharging power P0 of the battery and the electric defrosting switch K4 is turned on, the main controller controls the electric defrosting S4 to work normally.
The embodiment changes the situation that the existing control logic is simple and rough and the switch is opened to work all the time, and utilizes a main controller to realize the high-efficiency control of the variable-frequency air conditioner, the ventilation fan, the electric heater and the electric defrosting; in the control method, a method for controlling the comparison between the required power P1 of the driving motor and the allowable charging and discharging power P0 of the battery is adopted, on one hand, the required power P1 of the driving system of the whole vehicle is preferentially ensured on the premise that the allowable charging and discharging power P0 of the battery is not enough, on the other hand, the high-power charging and discharging time of the battery can be reduced, the working state of shallow charging and shallow discharging is approached as much as possible, and the service life of the battery is greatly prolonged.
The above description is only a preferred embodiment of the present disclosure and is not intended to limit the present disclosure, and various modifications and changes may be made to the present disclosure by those skilled in the art. Any modification, equivalent replacement, improvement and the like made within the spirit and principle of the present disclosure should be included in the protection scope of the present disclosure.
Although the present disclosure has been described with reference to specific embodiments, it should be understood that the scope of the present disclosure is not limited thereto, and those skilled in the art will appreciate that various modifications and changes can be made without departing from the spirit and scope of the present disclosure.

Claims (10)

1. A new energy vehicle air conditioning system is characterized in that: the system comprises a main controller, an air conditioning device arranged in a vehicle and a control switch used for controlling the air conditioning device, wherein the main controller is respectively connected with the control switch and an electric signal control end of the air conditioning device, and is connected with a vehicle controller of the vehicle and used for acquiring the running data of the vehicle; the main controller is used for calculating power supply requirements according to vehicle operation data, and controlling the electric signal control end of the air conditioning device to be used for turning on or off the air conditioning device when the vehicle driving battery meets the power supply requirements and the control switch is in an on state.
2. The new energy vehicle air conditioning system as claimed in claim 1, wherein: the running data of the vehicle comprises vehicle speed information, battery voltage information, battery temperature information, battery charge state, allowed charging and discharging power of the battery and required power of a driving system.
3. The new energy vehicle air conditioning system as claimed in claim 1, wherein: the operation data of the vehicle comprises a door opening signal and vehicle fault information, and the main controller is further configured to close the air conditioning device when a vehicle fault occurs or the vehicle door is open.
4. The new energy vehicle air conditioning system as claimed in claim 1, wherein: the air conditioning device comprises an air conditioner, an air exchange fan, an electric heating device and an electric defrosting device, the control output end of the main controller is respectively connected with the electric signal control ends of the air conditioner, the air exchange fan, the electric heating device and the electric defrosting device, and the signal input end of the main controller is respectively connected with an air conditioner panel, an air exchange fan switch, an electric heating device switch and an electric defrosting switch.
5. The new energy vehicle air conditioning system as claimed in claim 4, wherein: the air conditioner control switch is used for receiving manual input signals of a user, and the setting module is used for setting a set value of the temperature.
6. The new energy vehicle air conditioning system as claimed in claim 4, wherein: the ventilation fan is arranged on the top of the vehicle body or on a skylight of the vehicle;
or the electric heating device comprises a first heater and a radiator which are connected, and is arranged on the floor in the carriage;
or the electric defrosting device comprises a second heater and a ventilation pipeline connected with the second heater, and the air outlet end of the ventilation pipeline is arranged at the lower end of the defrosting part;
alternatively, PTC heaters are used for the first heater and the second heater, respectively.
7. An energy-saving control method of an air conditioning system of a new energy bus is characterized by comprising the following steps:
acquiring running data of a vehicle;
and judging whether the dischargeable power of the vehicle driving battery meets the driving power supply requirement or not according to the acquired data, and judging whether a control switch corresponding to the air conditioning device is in an open state or not, if so, the corresponding air conditioning device is in an openable state, and if not, closing the corresponding air conditioning device.
8. The energy-saving control method of the air conditioning system of the new energy bus as claimed in claim 7, characterized in that: and closing the air conditioning device when the whole vehicle fails or the vehicle door is opened.
9. The energy-saving control method of the air conditioning system of the new energy bus as claimed in claim 7, characterized in that: the air conditioning device comprises an air conditioner, a ventilation fan, an electric heating device or/and an electric defrosting device.
10. The energy-saving control method of the air conditioning system of the new energy bus as claimed in claim 7, characterized in that: if the required power of the driving motor is less than the allowable charging and discharging power of the battery and the control switch of the air conditioner is in an on state, the control steps of the air conditioner are as follows:
setting the running wind speed and the target temperature of the air conditioner;
judging whether the opening signal of the passenger door is open, if the passenger door is in an open state, stopping the refrigeration of a compressor in an air conditioner or the heating work of a heater, and starting an air conditioner fan to work; otherwise, the air conditioner does not work;
when the air conditioner is started, the frequency of a frequency converter of the air conditioner is calculated according to the running wind speed requirement and the target temperature, and the running power of the air conditioner is controlled.
CN202010727976.4A 2020-07-23 2020-07-23 New energy bus air conditioning system and energy-saving control method Pending CN111923684A (en)

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