CN115817104A - Air conditioner control method and device for new energy commercial vehicle and storage medium - Google Patents
Air conditioner control method and device for new energy commercial vehicle and storage medium Download PDFInfo
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Abstract
The invention discloses an air conditioner control method, device and storage medium for a new energy commercial vehicle, wherein the method comprises the following steps: after an air conditioner starting instruction sent by an air conditioner module is received, if the charging module is in a charging working state, whether the current value of the charging module is not smaller than a preset threshold value is detected; if so, controlling the air conditioner relay and the main negative relay to be closed so that the charging pile supplies power to the air conditioner module through the closed charging positive relay and the closed charging negative relay; if the charging module is in a non-working state, controlling the air conditioner relay to be closed and the main and negative relays to be closed so as to enable the power battery to supply power to the air conditioner module; in the process that power battery supplies power for air conditioner module, when detecting the start signal of the module that charges, keep air conditioner relay's closed state, control positive relay and the negative relay that charges of charging are all closed, fill electric pile for power battery power supply, fill electric pile simultaneously and supply power for air conditioner module, realize also can drive the function of air conditioner under the new forms of energy commercial car charged state.
Description
Technical Field
The invention relates to the technical field of new energy vehicles, in particular to an air conditioner control method and device of a new energy commercial vehicle and a storage medium.
Background
At present, most of commercial vehicle air conditioners with new energy are high-voltage electric air conditioners, and the high-voltage electric air conditioners are supplied with power to work through a discharge loop of a power battery of a vehicle. In order to ensure the safety of the vehicle in the charging state, the vehicle cannot move through a driving system of the vehicle in the charging state, only the charging loop is kept closed, and a power battery power supply loop of the whole vehicle is disconnected, namely a high-voltage load on the whole vehicle cannot work, and the vehicle comprises an air conditioner. If the high-voltage main loop is closed to supply power to the air conditioner during charging, the main loops such as a driving system and the like have high voltage, and the risk of driving possibly occurs during charging; if the air conditioner is powered by the main loop of the power battery during charging, the power battery can be discharged and charged, the power battery is not easy to be fully charged, and the performance of the power battery is influenced.
At present, new forms of energy commercial car does not use the fixed electric pile that fills of passenger car usually, but charges in the place such as the unloading district that delivers goods to the logistics park, and in the charging process, the driver need drive the air conditioner in the car and wait or have a rest. The inability of the vehicle to turn on the air conditioner in the charged state presents an inconvenience to waiting or resting drivers.
Disclosure of Invention
The invention provides an air conditioner control method and device for a new energy commercial vehicle and a storage medium, wherein the high-voltage electricity of a charging pile is used for supplying power to a power battery and supplying power to an air conditioner at the same time, so that the function of driving the air conditioner under the charging state of the new energy commercial vehicle is realized.
In order to meet the function of driving an air conditioner when a new energy commercial vehicle is charged and not generate potential safety hazards of charging and driving, the embodiment of the invention provides an air conditioner control method of the new energy commercial vehicle, wherein the new energy commercial vehicle comprises a power battery module, a charging module and an air conditioner module; the power battery module comprises a power battery; the charging module comprises a charging positive relay and a charging negative relay; the charging module is used for being externally connected with a charging pile, wherein the charging positive relay is connected with the positive pole of the charging pile, and the charging negative relay is connected with the negative pole of the charging pile; the air conditioner module comprises an air conditioner relay, a main negative relay and an electric air conditioner;
the positive pole of the charging pile is connected with the positive pole of the power battery through the charging positive relay, and the negative pole of the charging pile is connected with the negative pole of the power battery through the charging negative relay; one end of the electric air conditioner is connected with the positive electrode of the power battery through the air conditioner relay, and is connected with the positive electrode of the charging pile through the air conditioner relay and the charging positive relay; the other end of the electric air conditioner is connected with the negative electrode of the power battery through the main negative relay, and is connected with the negative electrode of the charging pile through the main negative relay and the charging negative relay;
the air conditioner control method includes:
after receiving an air conditioner starting instruction sent by the air conditioner module, judging whether the charging module is in a working state;
if the charging module is in a working state, detecting whether the current value of the charging module is not less than a preset threshold value; if so, controlling the air conditioner relay and the main negative relay to be closed so that the charging pile supplies power to the air conditioner module through the closed charging positive relay, the closed charging negative relay and the closed main negative relay; the charging module is in a working state, and the charging positive relay and the charging negative relay are both closed;
if the charging module is in a non-working state, controlling the air conditioner relay and the main and negative relays to be closed so that the power battery supplies power to the air conditioner module; the charging module is in a non-working state, and the charging positive relay and the charging negative relay are both switched off;
the power battery does the in-process of air conditioning module power supply, when detecting during the start signal of the module that charges, keep the closed state of air conditioning relay, control charge positive relay with charge the negative relay and all close, it does to fill electric pile power battery supplies power, and power battery module electric current is reverse to charge promptly, simultaneously it does to fill electric pile air conditioning module supplies power.
According to the air conditioner control method for the new energy commercial vehicle, after an air conditioner opening instruction sent by the air conditioner module is received, if the charging module of the vehicle is in a working state, namely the vehicle is in a charging state, whether charging current is not smaller than a preset threshold value is detected, if the charging current is not smaller than the preset threshold value, the power supply requirement is met, the air conditioner relay is closed, so that the charging pile is connected with the electric air conditioner through the closed charging positive relay, charging negative relay, main negative relay and air conditioner relay, the charging pile can directly supply power to the electric air conditioner, and the charging pile can supply power to the power battery and can also supply power to the electric air conditioner.
If the charging module of the vehicle is in a non-working state, namely the vehicle is in a non-charging state, the air conditioner relay and the main negative relay are directly closed, so that the power battery directly supplies power for the electric air conditioner.
If in the process that the power battery supplies power for the electric air conditioner, when the charging module is started, the air conditioner relay and the main negative relay do not need to be disconnected, and the charging positive relay and the charging negative relay are directly controlled to be closed, so that the vehicle enters a charging state. The positive relay that charges with the closure of the negative relay that charges for fill electric pile and insert the both ends of power battery and electric air conditioner, supply power for power battery and electric air conditioner simultaneously, realized filling electric pile and also can be for electric air conditioner power supply when for power battery power supply, realize that the module that charges of vehicle switches over operating condition back from non-operating condition, the power supply source of air conditioner can fill electric pile from power battery seamless switching, need not to close the air conditioner and switch the power supply source again.
As a preferred scheme, judging whether the charging module is in a working state specifically includes:
when detecting that a charging pile is connected to a charging module and the charging pile charges a battery module, judging that the charging module is in a working state; when the charging pile charges the battery module, the current of the power battery module is negative current;
and detecting that the charging pile is not connected with the charging module, and judging that the charging module is in a non-working state.
As a preferred scheme, when a charging pile is detected to be connected to a charging module and the charging pile charges a battery module, judging that the charging module is in a working state; when the charging pile charges the battery module, the current of the power battery module is negative current; therefore, the charging module in the working state is simultaneously connected with the power battery module and the air conditioning module, and can simultaneously supply power to the power battery module and the air conditioning module, thereby realizing the function of starting the air conditioner in the charging state of the new energy commercial vehicle.
As a preferred scheme, detecting whether the current value of the charging module is not less than a preset threshold value further comprises:
and if the current value of the charging module is smaller than the preset threshold value, controlling the air conditioner relay to keep a disconnected state, and displaying a reminding message that the charging current is weak to the cab.
Preferably, when the power battery is charged, when the SOC value of the power battery is higher than a certain value, the current output by the charging pile is reduced, when the current value of the charging module is detected to be smaller than a preset threshold value, the operation of the air conditioner is suspended, and when the SOC value of the power battery is higher than a certain value, that is, when the required charging current is small, the full charge can still be ensured.
Preferably, after controlling both the charging positive relay and the charging negative relay to be closed, the method further includes:
detecting whether the current value of the charging module is not less than a preset threshold value or not;
and if the current value of the charging module is smaller than the preset threshold value, controlling an air conditioner relay to be switched off so as to enable the charging pile to suspend supplying power to the air conditioner module.
Preferably, after a charging module of the vehicle is switched to an operating state from a non-operating state, when the SOC value of the power battery is higher than a certain value, the current output by the charging pile is reduced, when the current value of the charging module is detected to be smaller than a preset threshold value, the operation of the air conditioner is suspended, and when the SOC value of the power battery is higher than the certain value, that is, when the required charging current is small, full charging can still be ensured.
As a preferred scheme, before receiving an air conditioner starting instruction sent by the air conditioner module, the method further comprises the following steps:
when the charging module is detected to be in a working state, the main positive relay of the driving module is controlled to be disconnected, and the main positive relay is kept in a disconnected state until the charging module is detected to be in a non-working state;
the driving module comprises a main positive relay and a motor; the motor is connected with the power battery module through the main positive relay.
As a preferred scheme, when a vehicle is in a charging state, a high-voltage main loop is closed to supply power to an air conditioner, and meanwhile, a driving module connected in series with a charging module has high voltage, so that a driving risk possibly occurs during charging.
Correspondingly, the invention also provides an air conditioner control device of the new energy commercial vehicle, wherein the new energy commercial vehicle comprises a power battery module, a charging module and an air conditioner module; the power battery module comprises a power battery; the charging module comprises a charging positive relay and a charging negative relay; the charging module is used for being externally connected with a charging pile, wherein the charging positive relay is connected with the positive pole of the charging pile, and the charging negative relay is connected with the negative pole of the charging pile; the air conditioner module comprises an air conditioner relay, a main negative relay and an electric air conditioner;
the positive pole of the charging pile is connected with the positive pole of the power battery through a charging positive relay, and the negative pole of the charging pile is connected with the negative pole of the power battery through a charging negative relay; one end of the electric air conditioner is connected with the positive electrode of the power battery through an air conditioner relay, and is connected with the positive electrode of the charging pile through the air conditioner relay and the charging positive relay; the other end of the electric air conditioner is connected with the negative electrode of the power battery through the main negative relay, and is connected with the negative electrode of the charging pile through the main negative relay and the charging negative relay;
air conditioner controlling means is applied to new forms of energy commercial car includes: the air conditioner comprises an air conditioner signal receiving module and a control module;
the air conditioner signal receiving module is used for judging whether the charging module is in a working state or not after receiving an air conditioner starting instruction sent by the air conditioner module;
the control module is used for detecting whether the current value of the charging module is not less than a preset threshold value or not if the charging module is in a working state; if so, controlling the air conditioner relay and the main negative relay to be closed so that the charging pile supplies power to the air conditioner module through the closed charging positive relay, the closed charging negative relay and the closed main negative relay; the charging module is in a working state, and the charging positive relay and the charging negative relay are both closed;
if the charging module is in a non-working state, the control module controls the air conditioner relay and the main negative relay to be closed so that the power battery supplies power to the air conditioner module; the charging module is in a non-working state, and the charging positive relay and the charging negative relay are both switched off;
the power battery does the in-process of air conditioning module power supply, when detecting the start signal of the module that charges, control module control charge positive relay with charge the negative relay and all close, it does to fill electric pile power battery supplies power, and power battery module electric current is reverse to charge promptly, simultaneously it does to fill electric pile air conditioning module supplies power.
According to the air conditioner control device of the new energy commercial vehicle, after the air conditioner signal receiving module receives an air conditioner opening instruction sent by the air conditioner module, if the charging module of the vehicle is in a working state, namely the vehicle is in a charging state, the control module detects whether the charging current is not smaller than a preset threshold value, if so, the power supply requirement is met, the control module closes the air conditioner relay, so that the charging pile is connected with the electric air conditioner through the closed charging positive relay, charging negative relay, main negative relay and air conditioner relay, the charging pile can directly supply power to the electric air conditioner, and the charging pile can supply power to the power battery and can also supply power to the electric air conditioner.
If the charging module of the vehicle is in a non-working state, namely the vehicle is in a non-charging state, the control module directly closes the air conditioner relay and the main and negative relays so as to enable the power battery to directly supply power for the electric air conditioner.
If the power battery supplies power for the electric air conditioner, when the charging module is started, the air conditioner relay and the main negative relay do not need to be disconnected, and the control module directly controls the charging positive relay and the charging negative relay to be closed, so that the vehicle enters a charging state. The positive relay that charges with the closure of the negative relay that charges for fill electric pile and insert the both ends of power battery and electric air conditioner, supply power for power battery and electric air conditioner simultaneously, realized filling electric pile and also can be for electric air conditioner power supply when for power battery power supply, realize that the module that charges of vehicle switches over operating condition back from non-operating condition, the power supply source of air conditioner can fill electric pile from power battery seamless switching, need not to close the air conditioner and switch the power supply source again.
Preferably, the control module comprises: the charging control device comprises a judging unit, a charging control unit and a non-charging control unit;
the judging unit is used for judging whether the charging module is in a working state, and specifically comprises the following steps:
when detecting that a charging pile is connected to a charging module and the charging pile charges a battery module, judging that the charging module is in a working state; when the charging pile charges the battery module, the current of the power battery module is negative current; detecting that the charging pile is not connected with the charging module, and judging that the charging module is in a non-working state;
the charging control unit is used for detecting whether the current value of the charging module is not less than a preset threshold value or not if the charging module is in a working state; if so, controlling the air conditioner relay and the main negative relay to be closed so that the charging pile supplies power to the air conditioner module through the closed charging positive relay, the closed charging negative relay and the closed main negative relay; if the current value of the charging module is smaller than the preset threshold value, controlling an air conditioner relay to keep a disconnected state, and displaying a reminding message that the charging current is weak to a cab; the charging module is in a working state, and the charging positive relay and the charging negative relay are both closed;
the non-charging control unit is used for controlling the air conditioner relay and the main negative relay to be closed if the charging module is in a non-working state so as to enable the power battery to supply power to the air conditioner module; the charging module is in a non-working state, and the charging positive relay and the charging negative relay are both switched off;
the power battery does the in-process of air conditioning module power supply, when detecting the start signal of the module of charging, control charge positive relay with charge negative relay is all closed, it does to fill electric pile the power battery power supply, and power battery module electric current is reverse to charge promptly, simultaneously it does to fill electric pile the air conditioning module power supply.
As the preferred scheme, the judging unit judges whether the charging module is in the working state, if the charging module of the vehicle is in the working state, namely, the vehicle is in the charging state, the control module detects whether the charging current is not less than a preset threshold value, if so, the power supply requirement is met, the control module closes the air conditioner relay, so that the charging pile is connected with the electric air conditioner through the closed charging positive relay, the charging negative relay, the main negative relay and the air conditioner relay, the charging pile can directly supply power for the electric air conditioner, and the charging pile can supply power for the power battery and can also supply power for the electric air conditioner.
If the charging module of the vehicle is in a non-working state, namely the vehicle is in a non-charging state, the charging pile is not connected with the charging module, and the control module directly closes the air conditioner relay so that the power battery directly supplies power for the electric air conditioner.
If the power battery supplies power for the electric air conditioner, when the charging module is started, the air conditioner relay and the main negative relay do not need to be disconnected, and the control module directly controls the charging positive relay and the charging negative relay to be closed, so that the vehicle enters a charging state. The positive relay that charges with the closure of the negative relay that charges for fill electric pile and insert the both ends of power battery and electric air conditioner, supply power for power battery and electric air conditioner simultaneously, realized filling electric pile and also can be for electric air conditioner power supply when for power battery power supply, realize that the module that charges of vehicle switches over operating condition back from non-operating condition, the power supply source of air conditioner can fill electric pile from power battery seamless switching, need not to close the air conditioner and switch the power supply source again.
Preferably, the air-conditioning control device for the new energy commercial vehicle further includes: a drive control module;
the drive control module is used for controlling the main positive relay of the drive module to be disconnected when the charging module is detected to be in the working state, and keeping the main positive relay in the disconnected state until the charging module is detected to be in the non-working state;
the driving module comprises a main positive relay and a motor; the motor is connected with the power battery module through the main positive relay.
As a preferred scheme, when a vehicle is in a charging state, a high-voltage main loop is closed to supply power to an air conditioner, and meanwhile, a driving module connected in series with a charging module has high voltage, so that a risk of driving the vehicle may occur during charging.
Accordingly, the present invention also provides a computer readable storage medium comprising a stored computer program; when the computer program runs, the computer program controls the device where the computer readable storage medium is located to execute the air conditioner control method of the new energy commercial vehicle.
Drawings
Fig. 1 is a schematic flow chart of an embodiment of an air conditioning control method of a new energy commercial vehicle provided by the invention;
FIG. 2 is a circuit diagram of another embodiment of an air conditioning control method for a new energy commercial vehicle provided by the invention;
fig. 3 is a schematic structural diagram of an embodiment of an air conditioning control device of a new energy commercial vehicle provided by the invention.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Example one
Referring to fig. 1, in order to provide an air-conditioning control method for a new energy commercial vehicle according to an embodiment of the present invention, the new energy commercial vehicle includes a power battery module, a charging module, and an air-conditioning module; the power battery module comprises a power battery; the charging module comprises a charging positive relay and a charging negative relay; the charging module is used for being externally connected with a charging pile, wherein the charging positive relay is connected with the positive pole of the charging pile, and the charging negative relay is connected with the negative pole of the charging pile; the air conditioner module comprises an air conditioner relay, a main negative relay and an electric air conditioner;
the positive pole of the charging pile is connected with the positive pole of the power battery through the charging positive relay, and the negative pole of the charging pile is connected with the negative pole of the power battery through the charging negative relay; one end of the electric air conditioner is connected with the positive electrode of the power battery through the air conditioner relay, and is connected with the positive electrode of the charging pile through the air conditioner relay and the charging positive relay; the other end of the electric air conditioner is connected with the negative electrode of the power battery through the main negative relay, and is connected with the negative electrode of the charging pile through the main negative relay and the charging negative relay;
the air conditioner control method includes steps S101-S104:
step S101: and after receiving an air conditioner starting instruction sent by the air conditioner module, judging whether the charging module is in a working state.
In this embodiment, it is determined whether the charging module is in a working state, specifically:
when detecting that a charging pile is connected to a charging module and the charging pile charges a battery module, judging that the charging module is in a working state; when the charging pile charges the battery module, the current of the power battery module is negative current;
and detecting that the charging pile is not connected with the charging module, and judging that the charging module is in a non-working state.
In the embodiment, after detecting that the charging pile is connected to the charging module, the vehicle control unit detects charging connection signals of a fast charging gun and a slow charging gun of the charging pile; when the charging connection signal CC2 signal of the quick charging gun is effective and the charging connection signal CC signal sent by the slow charging gun is ineffective, the charging pile charges the battery module, and the current of the power battery module is negative current.
In the present embodiment, the vehicle needs to be kept in a stopped state while the vehicle is charged. When the vehicle control unit detects that the charging pile is connected to the charging module, the vehicle control unit detects whether the gear is an N-gear signal and whether the hand brake is a pull-up signal, and after the vehicle control unit detects the N-gear signal and the pull-up signal, the charging module is started to close the charging negative relay and the charging positive relay, so that the charging pile is connected to two ends of the power battery.
In this embodiment, the air conditioning module further includes a PTC heater; the PTC heater is connected in parallel at two ends of the electric air conditioner;
one end of an electric air conditioner and one end of a PTC heater are simultaneously connected with the positive pole of a power battery through the air conditioner relay, and are connected with the positive pole of a charging pile through the air conditioner relay and the charging positive relay; the other end of the electric air conditioner and the other end of the PTC heater are simultaneously connected with the negative electrode of the power battery through the main negative relay and connected with the negative electrode of the charging pile through the main negative relay and the charging negative relay;
the new energy commercial vehicle further comprises a conversion power supply module, and the conversion power supply module comprises an auxiliary driving relay, a DC-DC power supply, a storage battery, an oil pump controller, an oil pump, an air pump controller and an air pump.
One end of the DC-DC power supply is connected with the positive electrode of the power battery through an auxiliary drive relay, and is connected with the positive electrode of the charging pile through the auxiliary drive relay and the charging positive relay, and is connected with the oil pump controller and the air pump controller; the other end of the DC-DC power supply is connected with the negative electrode of the power battery through a main negative relay, and is connected with the negative electrode of the charging pile through the main negative relay and a charging negative relay;
one end of the oil pump controller and one end of the air pump controller are connected with the anode of the charging pile through an auxiliary drive relay and a charging positive relay at the same time, and are connected with the anode of the power battery through the auxiliary drive relay; the other end of the oil pump controller is connected with the oil pump, and the other end of the air pump controller is connected with the air pump.
If the charging module is in a working state, the charging pile is connected to two ends of the DC-DC power supply through the closed charging positive relay, the closed charging negative relay, the closed main negative relay and the closed auxiliary drive relay, the charging pile provides a high-voltage power supply for the DC-DC power supply, and the charging pile provides the high-voltage power supply for the DC-DC power supply while supplying power to the power battery; the DC-DC power supply converts a high-voltage power supply provided by the charging pile into a low-voltage power supply, the low-voltage power supply is supplied to the oil pump through the oil pump controller, and the low-voltage power supply is supplied to the air pump through the air pump controller.
If the charging module is in a non-working state, the power battery is connected to two ends of the DC-DC power supply through the closed main negative relay and the closed auxiliary drive relay, the power battery provides a high-voltage power supply for the DC-DC power supply, the DC-DC power supply converts the high-voltage power supply provided by the power battery into a low-voltage power supply, the low-voltage power supply is supplied to the oil pump through the oil pump controller, and the low-voltage power supply is supplied to the air pump through the air pump controller.
Step S102: if the charging module is in a working state, detecting whether the current value of the charging module is not less than a preset threshold value; if so, controlling the air conditioner relay and the main negative relay to be closed so that the charging pile supplies power to the air conditioner module through the closed charging positive relay, the closed charging negative relay and the closed main negative relay; and the charging module is in a working state, and the charging positive relay and the charging negative relay are both closed.
In this embodiment, detecting whether the current value of the charging module is not less than a preset threshold further includes:
and if the current value of the charging module is smaller than the preset threshold value, controlling the air conditioner relay to keep a disconnected state, and displaying a reminding message that the charging current is weak to the cab.
In this embodiment, when charging pile charges for power battery, when power battery's SOC value is higher than a definite value, can appear filling the circumstances that electric current that electric pile output diminishes, when detecting whether the current value of charging module is not less than when presetting the threshold value, does not open the work of air conditioner, fills electric pile and continues to charge for power battery and fill till power battery is full, when guaranteeing that power battery's SOC value is higher than a definite value, required charging current still can ensure to fill to full when hour promptly.
In this embodiment, before controlling the air-conditioning relay and the main and negative relays to be closed, the method further includes:
the vehicle controller detects whether the key signal is an ON gear signal or not, detects whether the switch signal of the PTC heater of the air-conditioning module is invalid or not, and controls the air-conditioning relay and the main negative relay to be closed to enable the air-conditioning compressor and the condenser fan to work when the key signal is the ON gear signal and the switch signal of the PTC heater of the air-conditioning module is invalid.
Step S103: if the charging module is in a non-working state, controlling the air conditioner relay and the main and negative relays to be closed so that the power battery supplies power to the air conditioner module; and the charging module is in a non-working state, and the charging positive relay and the charging negative relay are both switched off.
Step S104: the power battery does the in-process of air conditioning module power supply, when detecting during the start signal of the module that charges, keep the closed state of air conditioning relay, control charge positive relay with charge the negative relay and all close, it does to fill electric pile power battery supplies power, and power battery module electric current is reverse to charge promptly, simultaneously it does to fill electric pile air conditioning module supplies power.
In this embodiment, after controlling both the charging positive relay and the charging negative relay to be closed, the method further includes:
detecting whether the current value of the charging module is not less than a preset threshold value or not;
and if the current value of the charging module is smaller than the preset threshold value, controlling an air conditioner relay to be switched off so as to enable the charging pile to suspend supplying power to the air conditioner module.
In this embodiment, when charging pile charges power battery, when power battery's SOC value is higher than a definite value, can appear charging pile output current little the condition, when detecting whether the current value of charging module is not less than preset threshold value, the work of air conditioner is suspended, charging pile continues to charge power battery until power battery is fully charged, when guaranteeing that power battery's SOC value is higher than a definite value, required charging current hour still can guarantee to fill to fully charge.
In this embodiment, before receiving the air conditioner start instruction sent by the air conditioner module, the method further includes:
when the charging module is detected to be in a working state, the main positive relay of the driving module is controlled to be disconnected, and the main positive relay is kept in a disconnected state until the charging module is detected to be in a non-working state;
the driving module comprises a main positive relay and a motor; the motor is connected with the power battery module through the main positive relay.
In order to better explain the embodiment, a specific implementation flow of the air conditioner control method of the new energy commercial vehicle is provided as follows:
referring to fig. 2, a circuit diagram of the present embodiment is shown, in which arrows indicate the trend of partial current when the vehicle is turned on in a charging state, and the circuit diagram specifically includes:
the charging positive relay is connected with the positive electrode of the charging pile, and the charging negative relay is connected with the negative electrode of the charging pile;
the positive pole of the charging pile is connected with the positive pole of the power battery through the charging positive relay, and the negative pole of the charging pile is connected with the negative pole of the power battery through the charging negative relay;
one end of the TM controller is connected with the positive pole of the charging pile through a main positive relay and a charging positive relay, and is connected with the positive pole of the power battery through the main positive relay; the other end of the TM controller is connected with the motor.
One end of the DC-DC power supply is connected with the positive electrode of the power battery through an auxiliary drive relay, and is connected with the positive electrode of the charging pile through the auxiliary drive relay and the charging positive relay, and is connected with the oil pump controller and the air pump controller; the other end of the DC-DC power supply is connected with the negative electrode of the power battery through a main negative relay, and is connected with the negative electrode of the charging pile through the main negative relay and a charging negative relay;
one end of the oil pump controller and one end of the air pump controller are simultaneously connected with the anode of the charging pile through the auxiliary driving relay and the charging positive relay, and are connected with the anode of the power battery through the auxiliary driving relay; the other end of the oil pump controller is connected with the oil pump, and the other end of the air pump controller is connected with the air pump.
One end of an electric air conditioner and one end of a PTC heater are simultaneously connected with the positive pole of a power battery through the air conditioner relay, and are connected with the positive pole of a charging pile through the air conditioner relay and the charging positive relay; the other end of the electric air conditioner and the other end of the PTC heater are connected with the negative electrode of the power battery through the main negative relay, and are connected with the negative electrode of the charging pile through the main negative relay and the charging negative relay.
When the fact that a charging pile is connected into the circuit is detected, the vehicle control unit controls a charging positive relay and a charging negative relay to be closed, the charging pile charges the power battery, and the current of the power battery module is negative current;
when the charging pile is detected to charge the power battery, the main positive relay is controlled to be disconnected, and the main positive relay is kept in a disconnected state until the charging pile is detected to be disconnected from the circuit; the vehicle can not be started by the motor to drive when being charged, and potential safety hazards of charging and driving are avoided.
And after receiving an air conditioner opening instruction sent by the electric air conditioner, judging whether the charging pile is in a state of charging the power battery.
If the charging pile is detected to charge the power battery, detecting whether the power supply current value of the charging pile is not less than a preset threshold value;
if the power supply current value of the charging pile is not smaller than the preset threshold value, and the vehicle control unit detects that the key signal is an ON gear signal, when the switch signal of the PTC heater of the air conditioning module is invalid, the air conditioning relay and the main negative relay are controlled to be closed, so that the charging pile supplies power to the air conditioning module through the closed charging positive relay, the charging negative relay and the main negative relay, and an air conditioning compressor and a condenser fan work.
If the fact that the charging pile charges the power battery is detected, the main negative relay and the auxiliary drive relay are controlled to be closed, the charging pile is connected to two ends of the DC-DC power supply through the closed charging positive relay, the closed charging negative relay, the closed main negative relay and the closed auxiliary drive relay, the charging pile provides a high-voltage power supply for the DC-DC power supply, and the charging pile provides the high-voltage power supply for the DC-DC power supply while supplying power to the power battery; the DC-DC power supply converts a high-voltage power supply provided by the charging pile into a low-voltage power supply, the low-voltage power supply is supplied to the oil pump through the oil pump controller, and the low-voltage power supply is supplied to the air pump through the air pump controller.
If an air conditioner opening instruction sent by the air conditioner module is received and the fact that the charging pile is disconnected with the circuit is detected, the air conditioner relay and the main and negative relays are controlled to be closed, so that the power battery supplies power to the air conditioner module; when the charging pile is disconnected with the circuit, the charging positive relay and the charging negative relay are disconnected;
if the charging pile is disconnected with the circuit, the power battery is connected to two ends of the DC-DC power supply through the closed main negative relay and the closed auxiliary driving relay, the power battery provides a high-voltage power supply for the DC-DC power supply, the DC-DC power supply converts the high-voltage power supply provided by the power battery into a low-voltage power supply, the low-voltage power supply is supplied to the oil pump through the oil pump controller, and the low-voltage power supply is supplied to the air pump through the air pump controller.
In the process that the power battery supplies power for the electric air-conditioning module, when detecting that a charging pile is connected into a circuit, the closing state of the air-conditioning relay and the closing state of the main negative relay are maintained, the charging positive relay and the charging negative relay are controlled to be closed, so that the current of the power battery module is reversed, the charging pile supplies power to the power battery, and meanwhile the charging pile supplies power to the air-conditioning module.
Detecting whether the current value of the charging module is not less than a preset threshold value or not;
and if the current value of the charging module is smaller than the preset threshold value, controlling an air conditioner relay to be switched off so as to enable the charging pile to suspend supplying power to the air conditioner module.
The embodiment of the invention has the following effects:
according to the air conditioner control method of the new energy commercial vehicle, after an air conditioner opening instruction sent by the air conditioner module is received, if the charging module of the vehicle is in a working state, namely the vehicle is in a charging state, whether the charging current is not less than a preset threshold value is detected, if the charging current is not less than the preset threshold value, the power supply requirement is met, the air conditioner relay is closed, so that the charging pile is connected with an electric air conditioner through the closed charging positive relay, charging negative relay, main negative relay and air conditioner relay, the charging pile can directly supply power to the electric air conditioner, and the charging pile can supply power to a power battery and can also supply power to the electric air conditioner.
If the charging module of the vehicle is in a non-working state, namely the vehicle is in a non-charging state, the air conditioner relay and the main and negative relays are directly closed, so that the power battery directly supplies power for the electric air conditioner.
If in the process that the power battery supplies power for the electric air conditioner, when the charging module is started, the air conditioner relay and the main negative relay do not need to be disconnected, and the charging positive relay and the charging negative relay are directly controlled to be closed, so that the vehicle enters a charging state. The positive relay that charges with the closure of the negative relay that charges for fill electric pile and insert the both ends of power battery and electric air conditioner, supply power for power battery and electric air conditioner simultaneously, realized filling electric pile and also can be for electric air conditioner power supply when for power battery power supply, realize that the module that charges of vehicle switches over operating condition back from non-operating condition, the power supply source of air conditioner can fill electric pile from power battery seamless switching, need not to close the air conditioner and switch the power supply source again.
Example two
Referring to fig. 3, in order to provide an air conditioning control device of a new energy commercial vehicle according to an embodiment of the present invention,
air conditioner controlling means is applied to new forms of energy commercial car includes: an air conditioner signal receiving module 201 and a control module 202;
the air conditioner signal receiving module 201 is configured to determine whether the charging module is in a working state after receiving an air conditioner start instruction sent by the air conditioner module;
the control module 202 is configured to detect whether a current value of the charging module is not less than a preset threshold value if the charging module is in a working state; if so, controlling the air conditioner relay and the main negative relay to be closed so that the charging pile supplies power to the air conditioner module through the closed charging positive relay, the closed charging negative relay and the closed main negative relay; the charging module is in a working state, and the charging positive relay and the charging negative relay are both closed;
if the charging module is in a non-working state, the control module 202 controls the air conditioner relay and the main negative relay to be closed, so that the power battery supplies power to the air conditioner module; the charging module is in a non-working state, and the charging positive relay and the charging negative relay are both switched off;
the power battery does the in-process of air conditioning module power supply, when detecting the start signal of the module that charges, control module 202 control charge positive relay with charge negative relay is all closed, it does to fill electric pile power battery supplies power, and power battery module electric current is reverse to charge promptly, simultaneously it does to fill electric pile air conditioning module supplies power.
The control module 202 includes: the charging control device comprises a judging unit, a charging control unit and a non-charging control unit;
the judging unit is used for judging whether the charging module is in a working state, and specifically comprises the following steps:
when detecting that a charging pile is connected to a charging module and the charging pile charges a battery module, judging that the charging module is in a working state; when the charging pile charges the battery module, the current of the power battery module is negative current; detecting that a charging pile is not connected with a charging module, and judging that the charging module is in a non-working state;
the charging control unit is used for detecting whether the current value of the charging module is not less than a preset threshold value or not if the charging module is in a working state; if so, controlling the air conditioner relay and the main negative relay to be closed so that the charging pile supplies power to the air conditioner module through the closed charging positive relay, the closed charging negative relay and the closed main negative relay; if the current value of the charging module is smaller than the preset threshold value, controlling an air conditioner relay to keep a disconnected state, and displaying a reminding message of weak charging current to a cab; the charging module is in a working state, and the charging positive relay and the charging negative relay are both closed;
the non-charging control unit is used for controlling the air conditioner relay and the main negative relay to be closed if the charging module is in a non-working state so as to enable the power battery to supply power to the air conditioner module; the charging module is in a non-working state, and the charging positive relay and the charging negative relay are both switched off;
the power battery does the in-process of air conditioning module power supply, when detecting the start signal of the module of charging, control charge positive relay with charge negative relay is all closed, it does to fill electric pile the power battery power supply, and power battery module electric current is reverse to charge promptly, simultaneously it does to fill electric pile the air conditioning module power supply.
The air conditioning control device further includes: a drive control module;
the drive control module is used for controlling the main positive relay of the drive module to be disconnected when the charging module is detected to be in the working state, and keeping the main positive relay in the disconnected state until the charging module is detected to be in the non-working state;
the driving module comprises a main positive relay and a motor; the motor is connected with the power battery module through the main positive relay.
The air-conditioning control device of the new energy commercial vehicle can implement the air-conditioning control method of the new energy commercial vehicle in the embodiment of the method. The alternatives in the above-described method embodiments are also applicable to this embodiment and will not be described in detail here. The rest of the embodiments of the present application may refer to the contents of the above method embodiments, and in this embodiment, details are not described again.
The embodiment of the invention has the following effects:
according to the air conditioner control device of the new energy commercial vehicle, after the air conditioner signal receiving module receives an air conditioner opening instruction sent by the air conditioner module, if the charging module of the vehicle is in a working state, namely the vehicle is in a charging state, the control module detects whether the charging current is not smaller than a preset threshold value, if so, the power supply requirement is met, the control module closes the air conditioner relay, so that the charging pile is connected with the electric air conditioner through the closed charging positive relay, charging negative relay, air conditioner relay and main negative relay, the charging pile can directly supply power to the electric air conditioner, and the charging pile can supply power to the power battery and also can supply power to the electric air conditioner.
If the charging module of the vehicle is in a non-working state, namely the vehicle is in a non-charging state, the control module directly closes the air conditioner relay and the main and negative relays so as to enable the power battery to directly supply power for the electric air conditioner.
If the power battery supplies power for the electric air conditioner, when the charging module is started, the air conditioner relay and the main negative relay do not need to be disconnected, and the control module directly controls the charging positive relay and the charging negative relay to be closed, so that the vehicle enters a charging state. The positive relay that charges with the closure of the negative relay that charges for fill electric pile and insert the both ends of power battery and electric air conditioner, supply power for power battery and electric air conditioner simultaneously, realized filling electric pile and also can be for electric air conditioner power supply when for power battery power supply, realize that the module that charges of vehicle switches over operating condition back from non-operating condition, the power supply source of air conditioner can fill electric pile from power battery seamless switching, need not to close the air conditioner and switch the power supply source again.
EXAMPLE III
Correspondingly, the invention further provides a computer-readable storage medium, which includes a stored computer program, where when the computer program runs, the apparatus where the computer-readable storage medium is located is controlled to execute the air-conditioning control method for a new energy commercial vehicle according to any one of the above embodiments.
Illustratively, the computer program may be partitioned into one or more modules/units that are stored in the memory and executed by the processor to implement the invention. The one or more modules/units may be a series of computer program instruction segments capable of performing specific functions, which are used for describing the execution process of the computer program in the terminal device.
The terminal device can be a desktop computer, a notebook, a palm computer, a cloud server and other computing devices. The terminal device may include, but is not limited to, a processor, a memory.
The Processor may be a Central Processing Unit (CPU), other general-purpose Processor, a Digital Signal Processor (DSP), an application specific integrated circuit (ASI C), a Field Programmable Gate Array (FPGA) or other programmable logic device, a discrete Gate or transistor logic device, a discrete hardware component, etc. The general-purpose processor may be a microprocessor or the processor may be any conventional processor or the like, which is the control center of the terminal device and connects the various parts of the whole terminal device using various interfaces and lines.
The memory may be used to store the computer programs and/or modules, and the processor may implement various functions of the terminal device by running or executing the computer programs and/or modules stored in the memory and calling data stored in the memory. The memory may mainly include a storage program area and a storage data area, wherein the storage program area may store an operating system, an application program required for at least one function, and the like; the storage data area may store data created according to the use of the mobile terminal, and the like. In addition, the memory may include high speed random access memory, and may also include non-volatile memory, such as a hard disk, a memory, a plug-in hard disk, a Smart Media Card (SMC), a Secure Digital (SD) Card, a flash memory Card (F l ash Card), at least one magnetic disk storage device, a flash memory device, or other volatile solid state storage device.
Wherein, the terminal device integrated module/unit can be stored in a computer readable storage medium if it is implemented in the form of software functional unit and sold or used as a stand-alone product. Based on such understanding, all or part of the flow of the method according to the embodiments of the present invention may also be implemented by a computer program, which may be stored in a computer-readable storage medium, and when the computer program is executed by a processor, the steps of the method embodiments may be implemented. Wherein the computer program comprises computer program code, which may be in the form of source code, object code, an executable file or some intermediate form, etc. The computer-readable medium may include: any entity or device capable of carrying the computer program code, recording medium, usb disk, removable hard disk, magnetic disk, optical disk, computer Memory, read-only Memory (ROM), random Access Memory (RAM), electrical carrier wave signals, telecommunications signals, software distribution medium, etc.
The above-mentioned embodiments are provided to further explain the objects, technical solutions and advantages of the present invention in detail, and it should be understood that the above-mentioned embodiments are only examples of the present invention and are not intended to limit the scope of the present invention. It should be understood that any modifications, equivalents, improvements and the like, which come within the spirit and principle of the invention, may occur to those skilled in the art and are intended to be included within the scope of the invention.
Claims (9)
1. The air conditioner control method of the new energy commercial vehicle is characterized in that the new energy commercial vehicle comprises a power battery module, a charging module and an air conditioner module; the power battery module comprises a power battery; the charging module comprises a charging positive relay and a charging negative relay; the charging module is used for being externally connected with a charging pile, wherein the charging positive relay is connected with the positive pole of the charging pile, and the charging negative relay is connected with the negative pole of the charging pile; the air conditioner module comprises an air conditioner relay, a main negative relay and an electric air conditioner;
the positive pole of the charging pile is connected with the positive pole of the power battery through the charging positive relay, and the negative pole of the charging pile is connected with the negative pole of the power battery through the charging negative relay; one end of the electric air conditioner is connected with the positive electrode of the power battery through the air conditioner relay, and is connected with the positive electrode of the charging pile through the air conditioner relay and the charging positive relay; the other end of the electric air conditioner is connected with the negative electrode of the power battery through the main negative relay, and is connected with the negative electrode of the charging pile through the main negative relay and the charging negative relay;
the air conditioner control method includes:
after receiving an air conditioner starting instruction sent by the air conditioner module, judging whether the charging module is in a working state;
if the charging module is in a working state, detecting whether the current value of the charging module is not less than a preset threshold value; if so, controlling the air conditioner relay and the main negative relay to be closed so that the charging pile supplies power to the air conditioner module through the closed charging positive relay, the closed charging negative relay and the closed main negative relay; the charging module is in a working state, and the charging positive relay and the charging negative relay are both closed;
if the charging module is in a non-working state, the air conditioner relay and the main negative relay are controlled to be closed, so that the power battery supplies power to the air conditioner module; the charging module is in a non-working state, and the charging positive relay and the charging negative relay are both switched off;
the power battery does the in-process of air conditioning module power supply, when detecting during the start signal of the module that charges, keep the closed state of air conditioning relay, control charge positive relay with charge the negative relay and all close, it does to fill electric pile power battery supplies power, and power battery module electric current is reverse to charge promptly, simultaneously it does to fill electric pile air conditioning module supplies power.
2. The air conditioner control method of the new energy commercial vehicle according to claim 1, wherein the determining whether the charging module is in a working state specifically includes:
when detecting that a charging pile is connected to a charging module and the charging pile charges a battery module, judging that the charging module is in a working state; when the charging pile charges the battery module, the current of the power battery module is negative current;
and detecting that the charging pile is not connected with the charging module, and judging that the charging module is in a non-working state.
3. The air conditioner control method of the new energy commercial vehicle according to claim 1, wherein the detecting whether the current value of the charging module is not less than a preset threshold value further comprises:
and if the current value of the charging module is smaller than the preset threshold value, controlling the air conditioner relay to keep a disconnected state, and displaying a reminding message that the charging current is weak to the cab.
4. The air conditioning control method of the new energy commercial vehicle according to claim 1, wherein after the controlling of the charging positive relay and the charging negative relay is both closed, the method further comprises:
detecting whether the current value of the charging module is not less than a preset threshold value or not;
and if the current value of the charging module is smaller than the preset threshold value, controlling an air conditioner relay to be switched off so as to enable the charging pile to suspend supplying power to the air conditioner module.
5. The air conditioner control method of the new energy commercial vehicle according to claim 1, wherein before receiving an air conditioner starting instruction sent by the air conditioner module, the method further comprises:
when the charging module is detected to be in a working state, the main positive relay of the driving module is controlled to be disconnected, and the main positive relay is kept in a disconnected state until the charging module is detected to be in a non-working state;
the driving module comprises a main positive relay and a motor; the motor is connected with the power battery module through the main positive relay.
6. The air conditioner control device of the new energy commercial vehicle is characterized in that the new energy commercial vehicle comprises a power battery module, a charging module and an air conditioner module; the power battery module comprises a power battery; the charging module comprises a charging positive relay and a charging negative relay; the charging module is used for being externally connected with a charging pile, wherein the charging positive relay is connected with the positive pole of the charging pile, and the charging negative relay is connected with the negative pole of the charging pile; the air conditioner module comprises an air conditioner relay, a main negative relay and an electric air conditioner;
the positive pole of the charging pile is connected with the positive pole of the power battery through a charging positive relay, and the negative pole of the charging pile is connected with the negative pole of the power battery through a charging negative relay; one end of the electric air conditioner is connected with the positive electrode of the power battery through an air conditioner relay, and is connected with the positive electrode of the charging pile through the air conditioner relay and the charging positive relay; the other end of the electric air conditioner is connected with the negative electrode of the power battery through the main negative relay, and is connected with the negative electrode of the charging pile through the main negative relay and the charging negative relay;
air conditioner controlling means is applied to new forms of energy commercial car includes: the air conditioner comprises an air conditioner signal receiving module and a control module;
the air conditioner signal receiving module is used for judging whether the charging module is in a working state or not after receiving an air conditioner starting instruction sent by the air conditioner module;
the control module is used for detecting whether the current value of the charging module is not less than a preset threshold value or not if the charging module is in a working state; if so, controlling the air conditioner relay and the main negative relay to be closed so that the charging pile supplies power to the air conditioner module through the closed charging positive relay, the closed charging negative relay and the closed main negative relay; the charging module is in a working state, and the charging positive relay and the charging negative relay are both closed;
if the charging module is in a non-working state, the control module controls the air conditioner relay and the main negative relay to be closed so that the power battery supplies power to the air conditioner module; the charging module is in a non-working state, and the charging positive relay and the charging negative relay are both switched off;
the power battery does the in-process of air conditioning module power supply, when detecting the start signal of the module that charges, control module control the positive relay that charges with the negative relay that charges is all closed to make power battery module current reverse, it does to fill electric pile power battery supply, power battery module current reverse charging promptly, simultaneously it does to fill electric pile air conditioning module power supply.
7. The air conditioning control device of the new energy commercial vehicle as claimed in claim 6, wherein the control module comprises: the charging control device comprises a judging unit, a charging control unit and a non-charging control unit;
the judging unit is used for judging whether the charging module is in a working state, and specifically comprises the following steps:
when detecting that a charging pile is connected to a charging module and the charging pile charges a battery module, judging that the charging module is in a working state; when the charging pile charges the battery module, the current of the power battery module is negative current; detecting that a charging pile is not connected with a charging module, and judging that the charging module is in a non-working state;
the charging control unit is used for detecting whether the current value of the charging module is not less than a preset threshold value or not if the charging module is in a working state; if so, controlling the air conditioner relay and the main negative relay to be closed so that the charging pile supplies power to the air conditioner module through the closed charging positive relay, the closed charging negative relay and the closed main negative relay; if the current value of the charging module is smaller than the preset threshold value, controlling an air conditioner relay to keep a disconnected state, and displaying a reminding message that the charging current is weak to a cab; the charging module is in a working state, and the charging positive relay and the charging negative relay are both closed;
the non-charging control unit is used for controlling the air conditioner relay and the main negative relay to be closed if the charging module is in a non-working state so as to enable the power battery to supply power to the air conditioner module; the charging module is in a non-working state, and the charging positive relay and the charging negative relay are both switched off;
the power battery does the in-process of air conditioning module power supply, when detecting the start signal of the module of charging, control charge positive relay with charge negative relay is all closed, it does to fill electric pile the power battery power supply, and power battery module electric current is reverse to charge promptly, simultaneously it does to fill electric pile the air conditioning module power supply.
8. The air conditioning control device of the new energy commercial vehicle according to claim 6, characterized by further comprising: a drive control module;
the driving control module is used for controlling the main positive relay of the driving module to be switched off when the charging module is detected to be in the working state, and keeping the main positive relay in the switched-off state until the charging module is detected to be in the non-working state;
the driving module comprises a main positive relay and a motor; the motor is connected with the power battery module through the main positive relay.
9. A computer-readable storage medium, characterized in that the computer-readable storage medium comprises a stored computer program; wherein the computer program controls, when running, the apparatus in which the computer-readable storage medium is located to perform the air conditioning control method for the new energy commercial vehicle according to any one of claims 1 to 5.
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| US20180272878A1 (en) * | 2017-03-24 | 2018-09-27 | Hyundai Motor Company | Electric vehicle and battery charging method of the same |
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| US5656916A (en) * | 1994-08-25 | 1997-08-12 | Honda Giken Kogyo Kabushiki Kaisha | Apparatus for controlling the currents supplied for battery charging and an electric load during charging of an electric vehicle battery |
| JP2007189760A (en) * | 2006-01-11 | 2007-07-26 | Fujitsu Ten Ltd | Power controller for vehicle |
| US20180272878A1 (en) * | 2017-03-24 | 2018-09-27 | Hyundai Motor Company | Electric vehicle and battery charging method of the same |
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