Air conditioner power supply control system and control method of extended-range mine car

Abstract

The invention discloses an air conditioner power supply control system and method for an extended-range mine car. The system comprises a power battery, a central control display, a power distribution controller, a first relay and a key switch, the power distribution controller supplies power to the central control display and performs control data transmission; the key switch controls the working state of the power distribution controller according to the gear; the power distribution controller is connected with the power battery and supplies power to the power distribution controller; controlling data transmission; the power distribution controller controls whether a coil of the first relay is electrified or not; the power battery is electrically connected with the air conditioner through the first relay; and the power distribution controller is used for controlling the first relay to be switched on according to an air conditioner starting signal of the central control display when the key switch is in a power-on gear, so that the power battery powers on the air conditioner. According to the technical scheme, the air conditioner can be used under the condition that an engine is not started, meanwhile, vehicle energy consumption is reduced, vibration and noise are reduced, and the comfort of the air conditioner using environment is improved.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of hybrid vehicles, in particular to an air conditioner power supply control system and control method of a range-extended mine vehicle. BACKGROUND

[0002] At present, pure electric, battery replacement and hybrid power and other new energy mine vehicles have been widely used in mines to meet the requirements of long working time, high carbon emission and strict environmental protection.

[0003] The air conditioning system of the new energy mine vehicle usually uses a power battery as a power supply, and uses an electric compressor and an electric heater to realize the functions of refrigeration and heating. At present, the range-extended hybrid mine vehicle must be turned to the starting gear after the key switch is turned on, and then the power battery can supply high voltage to the air conditioning system, and the air conditioner can work. Since the engine in the starting gear is in working condition, the energy consumption of using the air conditioner is high, and the vibration and noise are large. However, in special operation scenes such as mine vehicle waiting for loading, short rest, maintenance and repair, the driver hopes that the key switch can also use the air conditioner without starting the engine, so as to improve the environmental comfort and reduce the vehicle energy consumption, vibration and noise. SUMMARY

[0004] The present application provides an air conditioner power supply control system and control method of a range-extended mine vehicle, which can use the air conditioner without starting the engine, and at the same time reduce the vehicle energy consumption, vibration and noise to improve the comfort of the air conditioner use environment.

[0005] According to one aspect of the present application, an air conditioner power supply control system of a range-extended mine vehicle is provided, comprising: a power battery, a central control display, a power distribution controller, a first relay and a key switch;

[0006] The power distribution controller is connected with the central control display through a first power line, and the power distribution controller supplies power to the central control display; and the power distribution controller is connected with the central control display through a data line for control data transmission;

[0007] The power distribution controller is electrically connected with the key switch, and the key switch controls the working state of the power distribution controller according to its gear position;

[0008] The power distribution controller is connected with the power battery through a second power line, and the power battery provides power to the power distribution controller; and the power distribution controller is connected with the power battery through the data line for control data transmission;

[0009] The power distribution controller is connected with the first relay through a first control line to control whether the coil of the first relay is powered;

[0010] The power battery is electrically connected with the air conditioner through the first relay.

[0011] The power distribution controller is configured to control the first relay to be turned on to enable the power battery to power the air conditioner according to the air conditioner turning-on signal of the central display when the key switch is in the power-on gear.

[0012] Optionally, a coil of the first relay is connected with the power distribution controller through the first control line, a first end of a first normally-open contact of the first relay is electrically connected with a positive electrode of the power battery, a second end of the first normally-open contact is electrically connected with a first end of the air conditioner, a first end of a second normally-open contact of the first relay is electrically connected with a negative electrode of the power battery, and a second end of the second normally-open contact is electrically connected with a second end of the air conditioner.

[0013] Optionally, the system further comprises a second relay, a voltage conversion module, a storage battery and a plurality of vehicle-mounted devices.

[0014] A first input end of the voltage conversion module is electrically connected with the second end of the first normally-open contact of the first relay, and a second input end of the voltage conversion module is electrically connected with the second end of the second normally-open contact of the first relay; a first output end of the voltage conversion module is connected with a first end of a coil of the second relay, and a contact of the second relay is connected with the first output end of the voltage conversion module; a second output end of the voltage conversion module is grounded; a positive electrode of the storage battery is electrically connected with the power distribution controller through the contact of the second relay, and a negative electrode of the storage battery is connected with a second end of the coil of the second relay; the power distribution controller is further electrically connected with the plurality of vehicle-mounted devices through a plurality of power lines.

[0015] Optionally, the vehicle-mounted devices at least include an instrument, a light and an engine.

[0016] Optionally, the second relay is a single-pole double-throw relay; a common contact of the second relay is electrically connected with the power distribution controller, a normally-closed contact of the second relay is electrically connected with the positive electrode of the storage battery, and a normally-open contact of the second relay is electrically connected with the first output end of the voltage conversion module.

[0017] Optionally, the system further comprises an air conditioner controller, the air conditioner controller is electrically connected with the first end of the coil of the second relay and is communicatively connected with the central display and the power distribution controller through the data line; the air conditioner controller is configured to control a working state of the air conditioner when the power battery powers the air conditioner.

[0018] According to a second aspect of the present application, a power supply control method for an air conditioner of a range-extended mine truck is provided, which is executed by the air conditioner control system of the range-extended mine truck according to any one of the first aspect, and the power supply control method comprises:

[0019] The power distribution controller detects whether the key switch is switched from the stop gear to the power-on gear;

[0020] If yes, an air conditioner start instruction is obtained through the human-computer interaction interface of the central control display;

[0021] The power distribution controller controls the first relay to be powered on through the first control line according to the air conditioner start instruction, so as to power on the air conditioner by the power battery.

[0022] Optionally, before the power distribution controller controls the first relay to be powered on through the first control line according to the air conditioner start instruction, so as to power on the air conditioner by the power battery, the method further comprises:

[0023] The power distribution controller obtains the power of the power battery and transmits the power to the central control display;

[0024] The central control display determines whether to blank the air conditioner start button of the human-computer interaction interface according to the relationship between the power and a preset value;

[0025] If the power is less than or equal to the preset value, the air conditioner start button of the human-computer interaction interface is blanked;

[0026] If the power is greater than the preset value, the air conditioner start button of the human-computer interaction interface is displayed.

[0027] Optionally, after the power distribution controller controls the first relay to be powered on through the first control line according to the air conditioner start instruction of the central control display, so as to power on the air conditioner by the power battery, the method further comprises:

[0028] The power distribution controller disconnects the power supply circuits of a plurality of vehicle-mounted devices through a plurality of power lines, so that the vehicle enters the power saving mode when the air conditioner is started.

[0029] Optionally, after the power distribution controller disconnects the power supply circuits of a plurality of vehicle-mounted devices through a plurality of power lines, so that the vehicle enters the power saving mode when the air conditioner is started, the method further comprises:

[0030] An on-board device start instruction is obtained through the human-computer interaction interface and transmitted to the power distribution controller;

[0031] The power distribution controller connects the power supply circuits of a plurality of vehicle-mounted devices according to the on-board device start instruction, so that the vehicle exits the power saving mode.

[0032] The technical scheme provided by the embodiment of the present application replaces the traditional fuse and relay with the power distribution controller, and combines the central control display to perform power-on or power-off distribution management on the electrical equipment of the vehicle. When the key switch is in the power-on gear, the human-computer interaction interface can receive the instruction of turning on the air conditioner, the central control display sends an air conditioner opening signal to the power distribution controller, and the power distribution controller controls the first relay coil to be powered on, so that the power battery powers on the air conditioner of the vehicle. The technical scheme provided by the embodiment of the present application can start the air conditioner of the vehicle without starting the engine, avoids the large vibration and noise when the engine is started, reduces the energy consumption, improves the comfort and experience when the air conditioner is used, and meets the application requirements of the mine car in the special operation scenes such as loading waiting, short rest, maintenance and repair.

[0033] It should be understood that the content described in this part is not intended to identify the key or important features of the embodiments of the present application, nor is it used to limit the scope of the present application. Other features of the present application will become apparent through the following description. BRIEF DESCRIPTION OF DRAWINGS

[0034] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings needed in the embodiment description will be briefly introduced below. Obviously, the drawings in the following description are only some embodiments of the present application, and other drawings can also be obtained by those skilled in the art without creative labor.

[0035] Figure 1 A structure schematic diagram of an air conditioner power control system of a range-extended mine car provided by the embodiment of the present application;

[0036] Figure 2 A structure schematic diagram of another air conditioner power control system of a range-extended mine car provided by the embodiment of the present application;

[0037] Figure 3 A structure schematic diagram of a human-computer interaction interface of a central control display provided by the embodiment of the present application;

[0038] Figure 4 A structure schematic diagram of an air conditioner power control method of a range-extended mine car provided by the embodiment of the present application;

[0039] Figure 5 A structure schematic diagram of another air conditioner power control method of a range-extended mine car provided by the embodiment of the present application;

[0040] Figure 6 A structure schematic diagram of another air conditioner power control method of a range-extended mine car provided by the embodiment of the present application. DETAILED DESCRIPTION

[0041] In order to better understand the technical scheme of the present application, the technical scheme in the embodiments of the present application will be clearly and completely described below in conjunction with the accompanying drawings of the embodiments of the present application. Obviously, the described embodiments are only a part of the embodiments of the present application, rather than all the embodiments of the present application. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative efforts should fall within the scope of the present application.

[0042] It should be noted that the terms "first", "second", and the like in the specification and claims of the present application and the above-described accompanying drawings are used to distinguish similar objects, and do not necessarily have to be used to describe a specific order or sequence. It should be understood that the data thus used can be interchanged under appropriate circumstances, so that the embodiments of the present application described herein can be implemented in an order other than those illustrated or described herein. In addition, the terms "include" and "have" and any variations thereof are intended to cover non-exclusive inclusion, for example, a process, method, system, product, or device including a series of steps or units does not have to be limited to only those steps or units clearly listed, but can include other steps or units not clearly listed or inherent to these processes, methods, products, or devices.

[0043] Figure 1 A structural schematic diagram of an air conditioner power control system of an extended range mine car is provided for the embodiments of the present application. Referring to Figure 1 The air conditioner power control system of the extended range mine car includes: a power battery 100, a central control display 200, a power distribution controller 300, a first relay 400, and a key switch 500; the power distribution controller 300 is connected with the central control display 200 through a first power line, and the power distribution controller 300 supplies power to the central control display 200; and the power distribution controller 300 is connected with the central control display 200 through a data line for control data transmission; the power distribution controller 300 is electrically connected with the key switch 500, and the key switch 500 controls the working state of the power distribution controller 300 according to its gear position; the power distribution controller 300 is connected with the power battery 100 through a second power line, and the power battery 100 provides power to the power distribution controller 300; and the power distribution controller 300 is connected with the power battery 100 through a data line for control data transmission; the power distribution controller 300 is connected with the first relay 400 through a first control line to control whether the coil of the first relay 400 is powered; the power battery 100 is connected with the air conditioner through the first relay 400; the power distribution controller 300 is used to control the first relay 400 to be turned on to power the air conditioner with the power battery 100 according to the air conditioner opening signal of the central control display 200 when the key switch 500 is in the power-on gear.

[0044] Specifically, the range-extended mine truck can be a hybrid mine truck powered by a power battery or an engine. The power battery 100 can be a lithium battery or a super capacitor, which can provide power for the vehicle as a high-voltage energy storage element of the range-extended hybrid mine truck. The central display 200 can be a human-computer interaction terminal provided on the range-extended mine truck and having a touch and display function. A plurality of control interfaces can be integrated on the interaction page of the central display 200, and the driver can issue a control instruction to the vehicle by touching the control interface, thereby realizing the control of the vehicle. The power distribution controller 300 can be a new type of electronic power distribution box. The outside of the power distribution controller 300 can be connected with the central display 200, the power battery 100 and other devices through a plurality of power lines to form a low-voltage 24V power supply circuit. The inside of the power distribution controller 300 can turn on or turn off the external power supply circuit through high-speed switches and other semiconductor chips, and respectively perform overcurrent, overheating and other shutdown protection on the plurality of power line circuits. The power distribution controller 300 is also connected with the central display 200 through a data line, so that the power supply circuit of the power supply of a certain place of the vehicle can be turned on or turned off through the software program according to the control instruction issued by the central display 200. The first relay 400 can be a switch for controlling the conduction or shutdown of the power battery 100 and the vehicle air conditioning circuit. The coil of the first relay 400 can be connected with the power distribution controller 300 through a first control line, and the power distribution controller 300 can control the power supply of the coil of the first relay 400 according to the gear position of the key switch 500 and the control signal of the central display 200, so that the circuit between the power battery 100 and the vehicle air conditioner is conducted, thereby powering the air conditioner with the power battery 100. The key switch 500 can have three gear positions, namely, the off gear OFF, the power-on gear ON and the start gear ST, wherein the power-on gear ON and the start gear ST are connected with the power distribution controller 300. When the key switch 500 is twisted from the off gear OFF to the power-on gear ON and finally kept in the power-on gear ON, the power distribution controller 300 detects the power-on gear ON signal of the key switch and supplies power to the central display 200 of the vehicle through a plurality of power lines, and the mine truck is in a low-voltage power-on state waiting to start. It can be understood that when the key switch 500 of the vehicle is in the power-on gear ON, the engine of the vehicle is not started, and the vibration and noise of the vehicle are small. The start gear ST of the key switch 500 is a self-reset gear, and when it is twisted from the power-on gear ON to the start gear ST, the engine starts to start, and each high-voltage electrical equipment starts to connect the power battery 100. After the start gear ST is self-reset to the power-on gear ON, the engine starts and the high-voltage power is completed, and the vehicle is in a state of waiting to engage the gear to drive. The stop gear OFF of the key switch is a holding gear, and when the key switch is twisted from the start gear ST or the power-on gear ON to the stop gear OFF and finally kept in the stop gear OFF, the high and low voltage is disconnected and the engine is turned off, and the vehicle is in a parked state.When the key switch 500 is in the power-on gear ON, if the driver sends an instruction to open the air conditioner through the human-computer interaction interface, the central control display 200 sends an air conditioner opening signal to the power distribution controller 300, and the power distribution controller 300 controls the first relay 400 coil to be powered on, so that the power battery 100 is powered on for the vehicle air conditioner.

[0045] The technical scheme provided by the embodiment of the present application replaces the traditional fuse and relay with the power distribution controller, and combines the central control display to perform power-on or power-off distribution management on the vehicle electrical equipment. When the key switch is in the power-on gear, the human-computer interaction interface can receive an instruction to open the air conditioner, the central control display sends an air conditioner opening signal to the power distribution controller, and the power distribution controller controls the first relay coil to be powered on, so that the power battery is powered on for the vehicle air conditioner. The technical scheme provided by the embodiment of the present application can enable the air conditioner of the vehicle without starting the engine, avoids the large vibration and noise when the engine is started, reduces the energy consumption, improves the comfort and experience when the air conditioner is used, and meets the application requirements of the mine car in the special operation scenes such as loading waiting, short rest, maintenance and repair.

[0046] Optionally, on the basis of the above embodiment, continue to refer to Figure 1 The coil of the first relay 400 is connected with the power distribution controller 300 through a first control line, the first end of the first normally open contact of the first relay 400 is electrically connected with the positive electrode of the power battery 100, the second end of the first normally open contact is electrically connected with the first end of the air conditioner, the first end of the second normally open contact of the first relay 400 is electrically connected with the negative electrode of the power battery 100, and the second end of the second normally open contact is electrically connected with the second end of the air conditioner.

[0047] Specifically, the first relay 400 can be a double-pole double-throw type relay. Referring to Figure 1, the first relay 400 can have two normally open contacts; one end 5 of the coil of the first relay 400 can be connected with the power distribution controller 300 through the control line 1, and the other end 6 of the coil of the first relay 400 can be grounded. The first end 1 of the first normally open contact of the first relay 400 can be electrically connected with the positive pole of the power battery 100, and the second end 2 of the first normally open contact can be electrically connected with the first end of the air conditioner, the first end 3 of the second normally open contact of the first relay 400 can be electrically connected with the negative pole of the power battery 100, and the second end 4 of the second normally open contact of the first relay 400 can be electrically connected with the second end of the air conditioner. In the state that the air conditioner is not turned on, the coil of the first relay 400 is in a power-off state, the first normally open contact and the second normally open contact are not attracted, and the first relay 400 is in a disconnected state. When the key switch 500 is switched from the off block OFF to the power-on block ON, and the central control display 200 sends an air conditioner turning-on signal to the power distribution controller 300, the power distribution controller 300 controls the coil of the first relay 400 to be powered, the first normally open contact and the second normally open contact are attracted, so that the power battery 100 is powered for the vehicle air conditioner, thereby enabling the air conditioner of the vehicle without starting the engine of the vehicle.

[0048] Optionally, Figure 2 Another structure schematic diagram of an air conditioner power supply control system of a range-extended mine truck is provided for an embodiment of the present application. Based on the above-mentioned embodiment, referring to Figure 2 The control system further comprises a second relay 600, a voltage conversion module 700, a storage battery 800 and a plurality of vehicle-mounted devices; the first input end of the voltage conversion module 700 is electrically connected with the second end of the first normally open contact of the first relay 400, and the second input end is electrically connected with the second end of the second normally open contact of the first relay 400; the first output end of the voltage conversion module 700 is connected with the first end of the coil of the second relay 600, and the contact of the voltage conversion module 700 is connected with the second relay 600, and the second output end of the voltage conversion module 700 is grounded; the positive pole of the storage battery 800 is electrically connected with the power distribution controller 300 through the contact of the second relay 600, and the negative pole of the storage battery 800 is connected with the second end of the coil of the second relay 600; the power distribution controller 300 is further electrically connected with the plurality of vehicle-mounted devices through a plurality of power lines. The second relay 600 is a single-pole double-throw relay; the common contact of the second relay 600 is electrically connected with the power distribution controller 300, the normally closed contact of the second relay 600 is electrically connected with the positive pole of the storage battery 800, and the normally open contact of the second relay 600 is electrically connected with the first output end of the voltage conversion module 700.

[0049] Specifically, the storage battery 800 can be used for engine starting in the extended-range hybrid mine truck, and provide low-voltage 24V power supply for the on-board equipment. The second relay 600 can be a switch for controlling the storage battery 800 or the power battery 100 to supply power to the power distribution controller 300. The voltage conversion module 700 can convert the high-voltage power of the power battery 100 into low-voltage 24V power, thereby supplying power to the power distribution controller 300 and the key switch 500. The power distribution controller 300 can also be electrically connected to a plurality of on-board equipment in the mine truck through a plurality of power supply lines. The power distribution controller 300 can further supply low-voltage power from the storage battery 800 to the plurality of on-board equipment through the plurality of power supply lines. As shown in Figure 2 The second relay 600 can be a single-pole double-throw relay, including one normally open contact, one normally closed contact, and a common contact. The common contact 7 of the second relay 600 can be electrically connected to the power distribution controller 300, the normally closed contact 8 of the second relay 600 can be electrically connected to the positive electrode of the storage battery 800, and one end of the coil of the second relay 600 and the normally open contact 9 of the second relay 600 can be electrically connected to the first output end of the voltage conversion module 700 to receive the +24V voltage after voltage reduction from the voltage conversion module 700, and the other end of the coil of the second relay 600 can be grounded. It can be understood that when the coil of the second relay 600 is in a power-off state, the positive electrode of the storage battery 800 is connected to the power distribution controller 300, and the storage battery 800 can supply power to the plurality of on-board equipment in the mine truck through the power distribution controller 300. When the first relay 400 is powered on to power on the air conditioner, the voltage conversion module 700 can convert the high-voltage power of the power battery 100 into low-voltage 24V power and transmit it to the coil of the second relay 600 and the normally open contact 9 of the second relay 600, at which time the common end 7 of the second relay 600 is connected to the normally open contact 9 of the second relay 600. That is, when the power battery 100 powers on the air conditioner, the low-voltage 24V voltage after voltage reduction by the power battery 100 can replace the low-voltage power of the storage battery 800 to supply power to the plurality of on-board equipment, thereby further reducing energy consumption and avoiding excessive power consumption of the storage battery 800 to cause the mine truck to be unable to start subsequently.

[0050] Alternatively, on the basis of the above-mentioned embodiments, referring to Figure 2 , the on-board equipment at least includes an instrument, a light, and an engine.

[0051] Specifically, the on-board equipment can be equipment necessary for controlling the operation of the vehicle. For example, it can be to the instrument, the light, and the engine. Figure 2As shown, the power distribution controller 300 can be connected with the instrument through the power line 3 to supply power for the vehicle instrument; the power distribution controller 300 can be connected with the light through the power line 4 to supply power for the vehicle light; the power distribution controller 300 can be connected with the engine through the power line 5 to supply power for the vehicle engine. The power distribution controller 300 can also be connected with other devices in the vehicle through a plurality of other power lines. The power distribution controller 300 can also be connected with the starting relay of the vehicle through the control line 2. It should be noted that when the first relay 400 is powered on to supply power for the air conditioner, the power controller 300 disconnects the power supply circuit of the instrument, light, engine and the like through the power line 3 to n, and the vehicle enters the power saving mode to reduce the power consumption. It can be understood that when the power supply of the vehicle-mounted device is switched from the storage battery 800 to the power battery 100, the power supply of the vehicle-mounted device is cut off, and the power saving mode is entered to save energy. If it is necessary to restore the power supply circuit, for example, it is necessary to restore the light power supply, the power saving mode switch on the human-computer interaction page of the central control display 200 can be touched to the OFF position, and then the light power supply can be touched to the ON position. The central control display 200 sends the power saving mode off and the instrument power on instructions to the power distribution controller 300 through the data line. The power distribution controller 300 restores the power supply of the power line 3 after receiving the instructions. When the power saving mode switch is in the ON position, the instrument power switch, the light power switch and the like are in the invisible state and cannot be touched. Further, during the use of the air conditioner in the ON position, if the key switch 500 is turned to the starting gear ST, the power distribution controller 300 automatically restores the power lines 3 to n and outputs to the instrument, light, engine and the like. At the same time, the starting relay main contact is controlled to be closed to start the engine through the control line 2. After the key switch is turned to the starting gear ST and then reset to the ON position, in order to avoid misoperation, the power saving mode switch of the human-computer interaction interface of the central control display 200 and the power switches of the vehicle-mounted devices are in the invisible state and cannot be touched.

[0052] Optionally, Figure 3 A structure schematic diagram of a human-computer interaction interface of a central control display provided by the embodiment of the present application. On the basis of the above embodiment, continuing to refer to Figure 2 and Figure 3 The system further comprises: an air conditioner controller 900, the air conditioner controller 900 is electrically connected with the first end of the coil of the second relay 600, and is in communication connection with the central control display 200 and the power distribution controller 300 through the data line; the air conditioner controller 900 is used for controlling the working state of the air conditioner when the power battery 100 supplies power for the air conditioner.

[0053] Specifically, the air conditioner controller 900 can be used to control the electric compressor, electric heater, electric water pump, electric fan, evaporator and other components in the air conditioning system to work in coordination. The air conditioner controller 900 can communicate with the central control display 200 through a data line. The driver can perform human-computer interaction through the air conditioning panel integrated in the central control display 200 to realize control functions such as turning on and off the air conditioning system, switching the cooling and heating working conditions, and adjusting the temperature. It should be noted that, during the use of the air conditioner in the ON gear of the key switch, as the power battery power consumption becomes smaller and smaller, when the power battery power reaches the alarm threshold, the central control display 200 will issue an alarm reminder that the power is insufficient and the air conditioner should be turned off. When the power of the power battery reaches the preset value, the central control display 200 will automatically turn off the air conditioner and send an air conditioner off command to the power distribution controller 300 and the air conditioner controller 900. After receiving the command, the power distribution controller 300 turns off the control line 1 output, the coils 5 and 6 of the first relay 400 lose power, the contacts 1 and 2, 3 and 4 are disconnected to cut off the power supply of the power battery, the coil of the second relay 600 loses power, the normally closed contact 8 is closed with the common contact 7, and the vehicle-mounted devices such as instruments, lights and engines are restored to power supply through the storage battery 800 and the power lines 3 to n, and the state of the original mine vehicle key switch in the ON gear without turning on the air conditioner is entered.

[0054] Figure 4 A structure diagram of an air conditioner power control method of a range-extended mine vehicle is provided for the embodiments of the present application. Referring to Figure 3 and Figure 4 The air conditioner control method of the range-extended mine vehicle provided by the present application can be executed by the air conditioner control system of the range-extended mine vehicle provided by any embodiment of the present application. The air conditioner control method of the range-extended mine vehicle comprises:

[0055] S110, the power distribution controller detects whether the key switch is switched from the stop gear to the power-on gear.

[0056] Specifically, the key switch can have three gears, namely the off gear, the power-on gear and the start gear. When the driver twists the vehicle key switch, the gear can be changed, and the power distribution controller receives different electrical signals when the key switch is in different gears. The power distribution controller can determine whether the vehicle is switched from the gear to the power-on gear according to the signals when the key switch is switched from the different gears.

[0057] S120, if yes, an air conditioner on instruction is obtained through the human-computer interaction interface of the central control display.

[0058] Specifically, when the power distribution controller detects that the key switch is switched from the stop gear to the power-on gear, if there is a demand to turn on the air conditioner at this time, the driver can control the air conditioner switch in the human-computer interaction interface of the central control display to switch from OFF to ON, so as to send an air conditioner on instruction to the central control display.

[0059] S130, the power distribution controller controls the first relay to be powered on through the first control line according to the air conditioner opening instruction, so that the power battery is powered on for the air conditioner.

[0060] Specifically, when the power distribution controller receives the air conditioner opening signal sent by the central control display, the power distribution controller controls the coil of the first relay to be powered on through the control line 1, and the first normally open contact and the second normally open contact of the first relay are attracted, so that the power battery is powered on for the vehicle air conditioner, thereby enabling the air conditioner of the vehicle without starting the engine of the vehicle.

[0061] Optionally, Figure 5 Another structure schematic diagram of the air conditioner power control method of the range-extended mine truck is provided for the embodiment of the present application. Referring to Figure 5 The method comprises:

[0062] S210, the power distribution controller acquires the power of the power battery and transmits the power to the central control display.

[0063] Specifically, the power distribution controller can acquire the current power of the power battery through the data line and transmit the current power of the power battery to the central control display through the data line. The central control display is provided with a display interface of the current power of the power battery, and the acquired current power of the power battery can be displayed in real time through the display interface.

[0064] S220, the central control display determines whether to hide the air conditioner opening button of the human-machine interaction interface according to the relationship between the power and the preset value.

[0065] Specifically, the preset value can be a set value of the power of the power battery sufficient to support the use of the air conditioner and not to affect the subsequent normal driving of the vehicle. It can be understood that the central control display can determine whether to provide the function of opening the air conditioner to the driver through the air conditioner opening button of the human-machine interaction interface according to the relationship between the current power of the power battery and the preset value.

[0066] S230, if the power is less than or equal to the preset value, the air conditioner opening button of the human-machine interaction interface is hidden.

[0067] Specifically, if the current power of the power battery is less than or equal to the preset value, it means that the current power of the power battery is insufficient to support the use of the air conditioner and will affect the subsequent normal driving of the vehicle, so the air conditioner opening button of the human-machine interaction interface is hidden. It can be understood that when the power of the power battery is insufficient to support the use of the air conditioner and will affect the subsequent normal driving of the vehicle, the central control display does not provide the function of opening the air conditioner, and the driver cannot open the air conditioner through the human-machine interaction interface of the central control display.

[0068] S240, if the power is greater than the preset value, display the air conditioner start button of the human-computer interaction interface.

[0069] Specifically, if the current power of the power battery is greater than the preset value, it indicates that the current power of the power battery is sufficient to support the use of the air conditioner, and will affect the subsequent normal driving of the vehicle, therefore the air conditioner start button of the human-computer interaction interface is in a touchable state, and the driver can select whether to start the air conditioner according to the demand.

[0070] S250, the power distribution controller detects whether the key switch is switched from the stop gear to the power-on gear.

[0071] S260, if yes, the air conditioner start instruction is obtained through the human-computer interaction interface of the central control display.

[0072] S270, the power distribution controller controls the first relay to be powered on through the first control line according to the air conditioner start instruction, so as to power on the air conditioner by the power battery.

[0073] Optionally, Figure 6 Another structure schematic diagram of the air conditioner power control method of the range extended mine truck is provided for the embodiment of the present application. Referring to Figure 6 The method comprises the following steps:

[0074] S310, the power distribution controller detects whether the key switch is switched from the stop gear to the power-on gear.

[0075] S320, if yes, the air conditioner start instruction is obtained through the human-computer interaction interface of the central control display.

[0076] S330, the power distribution controller controls the first relay to be powered on through the first control line according to the air conditioner start instruction, so as to power on the air conditioner by the power battery.

[0077] S340, the power distribution controller disconnects the power supply circuit of a plurality of vehicle-mounted devices through a plurality of power lines, so as to make the vehicle enter the power saving mode when the air conditioner is started.

[0078] Specifically, when the first relay is powered on and conducts, and the air conditioner is powered on by the power battery, the power controller disconnects the power supply circuit of the instrument, the light, the engine and the like through the power lines 3 to n, and the vehicle enters the power saving mode to reduce the power consumption. It can be understood that when the air conditioner is powered on by the power battery, the power supply of the vehicle-mounted device is switched from the storage battery to the power battery, but at the same time the power supply of the vehicle-mounted device is cut off, and the power saving mode is entered to save the energy consumption.

[0079] S350, the vehicle-mounted device start instruction is obtained through the human-computer interaction interface, and the vehicle-mounted device start instruction is transmitted to the power distribution controller.

[0080] Specifically, if it is necessary to restore a certain power supply loop, for example, it is necessary to restore the light power supply, the power saving mode switch on the man-machine interaction page of the central control display can be touched to the OFF position, and then the light power supply is touched to the ON position. The central control display sends the power saving mode off and the instrument power on instructions to the power distribution controller through the data line.

[0081] S360, the power distribution controller turns on the power supply loop of the plurality of vehicle-mounted devices according to the vehicle-mounted device on instruction, so that the vehicle exits the power saving mode.

[0082] Specifically, the power distribution controller restores the power supply of the plurality of vehicle-mounted devices through a plurality of power lines after receiving the instruction, and exits the power saving mode. It can be understood that when the air conditioner is powered on by the power battery, the power supply of the vehicle-mounted device will be switched from the storage battery to the power battery, but at the same time the power supply of the vehicle-mounted device is cut off, and the power saving mode is entered to save energy consumption; if it is necessary to start some vehicle-mounted devices, the power saving mode can be closed through the man-machine interaction interface of the central control display, and then the low-voltage power converted by the voltage conversion module is used to supply power to the vehicle-mounted devices.

[0083] It should be understood that various forms of processes shown above can be used to reorder, add or delete steps. For example, each step described in the present application can be executed in parallel, sequentially or in different order, as long as the desired results of the technical solutions of the present application can be achieved, which is not limited herein.

[0084] The above specific embodiments do not constitute a limitation on the scope of protection of the present application. Those skilled in the art should understand that various modifications, combinations, sub-combinations and substitutions can be made according to design requirements and other factors. Any modifications, equivalent replacements and improvements made within the spirit and principles of the present application shall be included in the scope of protection of the present application.

Claims

1. An air conditioning power supply control system for an extended-range mining vehicle, characterized in that: include: Power battery, central control display, power distribution controller, first relay and key switch; The power distribution controller is connected to the central control display via a first power line, and the power distribution controller supplies power to the central control display; and the power distribution controller is connected to the central control display via a data line to transmit control data; The power distribution controller is electrically connected to the key switch, and the key switch controls the working state of the power distribution controller according to its gear position; The power distribution controller is connected to the power battery via a second power line, and the power battery provides power to the power distribution controller; and the power distribution controller is connected to the power battery via the data line to transmit control data; The power distribution controller is connected to the first relay via a first control line to control whether the coil of the first relay is energized; The power battery is electrically connected to the air conditioner via the first relay; The power distribution controller is used to control the first relay to be turned on so that the power battery can power the air conditioner according to the air conditioner start signal of the central control display when the key switch is in the power-on position.

2. The air conditioning control system of the extended-range mining vehicle according to claim 1, characterized in that: The coil of the first relay is connected to the power distribution controller through the first control line, the first end of the first normally open contact of the first relay is electrically connected to the positive pole of the power battery, the second end of the first normally open contact is electrically connected to the first end of the air conditioner, the first end of the second normally open contact of the first relay is electrically connected to the negative pole of the power battery, and the second end of the second normally open contact is electrically connected to the second end of the air conditioner.

3. The air conditioning control system of the extended-range mining vehicle according to claim 2, characterized in that: Also includes: a second relay, a voltage conversion module, a battery, and a plurality of on-board devices; The first input end of the voltage conversion module is electrically connected to the second end of the first normally open contact of the first relay, and the second input end is electrically connected to the second end of the second normally open contact of the first relay; the first output end of the voltage conversion module is connected to the first end of the coil of the second relay, and the first output end of the voltage conversion module is connected to the contact of the second relay, and the second output end of the voltage conversion module is grounded; the positive pole of the battery is electrically connected to the power distribution controller through the contact of the second relay, and the negative pole of the battery is connected to the second end of the coil of the second relay; the power distribution controller is also electrically connected to multiple vehicle-mounted devices through multiple power lines.

4. The air conditioning control system of the extended-range mining vehicle according to claim 3, characterized in that: The vehicle-mounted equipment at least includes instruments, lights and an engine.

5. The air conditioning control system of the extended-range mining vehicle according to claim 3, characterized in that: The second relay is a single-pole double-throw relay; the common contact of the second relay is electrically connected to the power distribution controller, the normally closed contact of the second relay is electrically connected to the positive pole of the battery, and the normally open contact of the second relay is electrically connected to the first output end of the voltage conversion module.

6. The air conditioning control system for the extended-range mining vehicle according to claim 3, characterized in that: Also includes: An air-conditioning controller is electrically connected to the first end of the coil of the second relay, and is communicatively connected to the central control display and the power distribution controller via the data line; the air-conditioning controller is used to control the working state of the air conditioner when the power battery powers on the air conditioner.

7. A method for controlling the air conditioning power supply of an extended-range mining vehicle, characterized in that: The air conditioning control system of the extended-range mining vehicle according to any one of claims 1 to 6 is used for execution, and the air conditioning control method of the extended-range mining vehicle comprises: The power distribution controller detects whether the key switch is switched from the stop position to the power-on position; If so, obtaining an air-conditioning start instruction through the human-computer interaction interface of the central control display; The power distribution controller controls the first relay to be energized through the first control line according to the air conditioner start instruction, so that the power battery powers the air conditioner.

8. The air conditioning control method for an extended-range mining vehicle according to claim 7, characterized in that: Before the power distribution controller controls the first relay to be energized through the first control line according to the air conditioner start instruction so that the power battery powers the air conditioner, the method further includes: The power distribution controller obtains the power of the power battery and transmits the power to the central control display; The central control display determines whether to hide the air conditioning on button of the human-computer interaction interface according to the relationship between the power level and the preset value; If the power level is less than or equal to the preset value, the air conditioner on button on the human-computer interaction interface is hidden; If the power level is greater than the preset value, the air conditioning on button on the human-computer interaction interface is displayed.

9. The air conditioning control method for an extended-range mining vehicle according to claim 7, characterized in that: After the power distribution controller controls the first relay to be energized through the first control line according to the air conditioner start instruction on the central control display, so that the power battery powers the air conditioner, the method further includes: The power distribution controller disconnects the power supply circuits of multiple vehicle-mounted devices through multiple power lines, so that the vehicle enters a power-saving mode when the air conditioner is turned on.

10. The air conditioning control system for the extended-range mining vehicle according to claim 9, characterized in that: After the power distribution controller disconnects the power supply circuits of the plurality of vehicle-mounted devices through the plurality of power lines so that the vehicle enters a power saving mode when the air conditioner is turned on, the method further includes: Obtaining an on-board device start-up instruction through the human-computer interaction interface, and transmitting the on-board device start-up instruction to the power distribution controller; The power distribution controller connects the power supply circuits of the plurality of the onboard devices according to the onboard device start-up instruction, so that the vehicle exits the power saving mode.

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