CN114977854A - Control method of vehicle-mounted 220V inverter with electric quantity protection - Google Patents
Control method of vehicle-mounted 220V inverter with electric quantity protection Download PDFInfo
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- CN114977854A CN114977854A CN202210749613.XA CN202210749613A CN114977854A CN 114977854 A CN114977854 A CN 114977854A CN 202210749613 A CN202210749613 A CN 202210749613A CN 114977854 A CN114977854 A CN 114977854A
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02M—APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF
- H02M7/00—Conversion of ac power input into dc power output; Conversion of dc power input into ac power output
- H02M7/42—Conversion of dc power input into ac power output without possibility of reversal
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60R—VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR
- B60R16/00—Electric or fluid circuits specially adapted for vehicles and not otherwise provided for; Arrangement of elements of electric or fluid circuits specially adapted for vehicles and not otherwise provided for
- B60R16/02—Electric or fluid circuits specially adapted for vehicles and not otherwise provided for; Arrangement of elements of electric or fluid circuits specially adapted for vehicles and not otherwise provided for electric constitutive elements
- B60R16/023—Electric or fluid circuits specially adapted for vehicles and not otherwise provided for; Arrangement of elements of electric or fluid circuits specially adapted for vehicles and not otherwise provided for electric constitutive elements for transmission of signals between vehicle parts or subsystems
- B60R16/0231—Circuits relating to the driving or the functioning of the vehicle
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J7/00—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
- H02J7/00032—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries characterised by data exchange
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J7/00—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
- H02J7/0029—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries with safety or protection devices or circuits
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J7/00—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
- H02J7/0029—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries with safety or protection devices or circuits
- H02J7/00306—Overdischarge protection
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J7/00—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
- H02J7/0029—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries with safety or protection devices or circuits
- H02J7/0031—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries with safety or protection devices or circuits using battery or load disconnect circuits
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J7/00—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
- H02J7/0063—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries with circuits adapted for supplying loads from the battery
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T10/00—Road transport of goods or passengers
- Y02T10/60—Other road transportation technologies with climate change mitigation effect
- Y02T10/72—Electric energy management in electromobility
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- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Automation & Control Theory (AREA)
- Mechanical Engineering (AREA)
- Electric Propulsion And Braking For Vehicles (AREA)
Abstract
The invention discloses a control method of a vehicle-mounted 220V inverter with electric quantity protection, which comprises the following steps: s1, an engine management system sends vehicle information, start-stop information and engine state information to a vehicle body control module; s2, the vehicle body control module sends out an enabling signal to control the output command and the output maximum power of the 220V inverter according to the power supply gear, the energy level and the engine state; S3.220V the inverter judges whether to allow output according to the state of the relay IG2 and the enable signal of the vehicle body control module; S4.220V detecting whether the maximum power allowed by the vehicle body control module is exceeded or not after the inverter is operated, and feeding back a load signal to the vehicle body control module; and S5, the vehicle body control module receives a load power signal fed back by the 220V inverter, judges whether to send a start/stop prohibition signal to the engine management system, receives a 220V inverter fault signal, and performs diagnosis management. The invention effectively protects the service life of the battery of the user and the normal use of the automatic start-stop function.
Description
Technical Field
The invention relates to the technical field of automobile electronic appliances, in particular to a control method of a vehicle-mounted 220V inverter with electric quantity protection.
Background
The vehicle-mounted 220V inverter controller generally adopts input voltage comparison as a low-power protection scheme, the existing technical scheme cannot accurately judge the SOF (state of health) and the SOC (state of charge) of a battery of the whole vehicle and only can protect the problem that the battery cannot be started due to feeding, and when a user continuously uses the 220V inverter for a vehicle type with start-stop (automatic start and stop of an engine), the whole vehicle cannot generate power during the start and stop period, so that the storage battery is over-discharged, the problems that the start and stop function is invalid, the service life of the battery is shortened and the like are influenced.
Disclosure of Invention
The invention aims to solve the problems and provides a control method of a vehicle-mounted 220V inverter with electric quantity protection, wherein the 220V inverter CAN receive the working mode, the battery state and other vehicle working states of a whole vehicle under the control of a vehicle body control module through LIN-CAN data interaction of a vehicle-mounted local area network, and output power protection or closing is carried out on the 220V inverter in real time, so that the starting and stopping functions of the whole vehicle and the health degree of the electric quantity of a battery are effectively protected.
A control method of a vehicle-mounted 220V inverter with charge protection comprises the following steps:
s1, an engine management system sends vehicle information, start and stop information and engine state information to a vehicle body control module: vehicle information, start-stop information and engine state information sent by the engine management system are sent to the vehicle body control module through a Controller Area Network (CAN);
s2, the vehicle body control module sends out an enabling signal to control the output command and the output maximum power of the 220V inverter according to the power supply gear, the energy level and the engine state: the vehicle body control module controls the output command of the 220V inverter according to the power supply gear and the energy level, controls the maximum power output by the 220V inverter according to the engine state, sends the brightness mode of the 220V inverter indicator light and the whole vehicle mode signal to a local area network LIN branch line in an enabling signal mode, and sends the signals to the 220V inverter;
S3.220V the inverter judges whether to allow output according to the state of the relay IG2 and the enable signal of the vehicle body control module: the 220V inverter judges whether to allow output according to the state of the relay IG2 and an enabling signal of a vehicle body control module;
S4.220V the inverter allows to output the maximum power which is later detected whether the output of the inverter is over 220V, and feeds back a load signal to the vehicle body control module: the 220V inverter carries out self-diagnosis, feeds back a diagnosis signal to a local area network LIN, monitors output power, feeds back a grade value of the output power to the local area network LIN, and cuts off output when the output power exceeds a limit power; controlling a 220V inverter working indicator lamp to be turned on, and determining the brightness of the working indicator lamp according to a 220V inverter indicator lamp brightness mode signal received from a vehicle body control module;
s5, the vehicle body control module receives a load power signal fed back by the 220V inverter, judges whether to send a start/stop prohibition signal to the engine management system, receives a 220V inverter fault signal, and carries out diagnosis management: the engine management system receives a 220V inverter start-stop prohibition signal sent by the vehicle body control module, prohibits automatic stop, and sends a start-stop prompt signal to a combination instrument module IC of the engine management system, and the 220V inverter cuts off output when detecting that the voltage of the storage battery is lower than 11V.
Specifically, in step S2, when the power source gear is turned on and the energy management level is level0, the vehicle body control module determines that the enable condition is satisfied, the vehicle body control module sends an enable signal to the 220V inverter, and the 220V inverter executes an allowable output instruction; when the power supply gear is closed and the energy management level is not level0, the vehicle body control module judges that the enabling condition is not met, the vehicle body control module sends an enabling signal to the 220V inverter, and the 220V inverter executes an output-disallowed instruction.
Specifically, in step S2, the vehicle body control module needs to control the maximum power allowed to be output by the 220V inverter according to the engine state, and when the enable signal received by the 220V inverter is output allowed, the engine operation state is running and the inverter outputs 400 watts of power; the running state of the engine is non-running, and the output power of the inverter is 200 watts; when the enabling condition received by the 220V inverter is not met, the engine management system sends an engine state signal to be running or non-running, and at the moment, the vehicle body control module sends a power limiting signal to control the 220V inverter to be closed.
Specifically, in step S3, the 220V inverter determines whether to allow output according to the state of the relay IG2 and the enable signal of the vehicle body control module: when the signal of the relay IG2 is high and effective, the 220V inverter is allowed to output when the enabling signal received by the 220V inverter is that the output condition of the 220V inverter is not equal to 0; when the received enable signal is that the output condition of the 220V inverter is equal to 0, the 220V inverter does not allow output; when a local area network LIN signal of the 220V inverter is disconnected, when the local area network LIN signal is not detected in power-on or when the output condition of the 220V inverter is that the 220V inverter receives a signal before the local area network LIN signal is disconnected is not equal to 0, the 220V inverter continues to output for 20 minutes after the local area network LIN signal is disconnected; when the condition that the 220V inverter outputs signals received by the 220V inverter before the local area network LIN signals are disconnected is equal to 0, the 220V inverter keeps not allowing output after the local area network LIN signals are disconnected.
Specifically, in step S4, when the 220V inverter detects that the output power exceeds the limit power, the output is cut off, the output is output again after 5 seconds, the output power is detected again, if the output power is lower than the limit power, the output is normally output, if the output power exceeds the limit power, the output is cut off again, and the above steps are repeated for 5 times; and 5, if the over-power is still detected, the power is required to be turned off, and the power is turned on again to allow output.
Specifically, in step S5, if the 220V inverter detects that the vehicle body control module is disconnected, the 220V inverter limits the maximum output power to 100 watts on the premise that the 220V inverter allows enabling; the vehicle type with the start-stop function is in an open state, the vehicle body control module needs to control whether the 220V inverter enters a start-stop mode or not according to a start-stop state signal, the maximum output power of the 220V inverter is limited to 200 watts in the start-stop mode, the 220V inverter keeps outputting when detecting that the voltage of a storage battery is temporarily lower than 11V in the starting process, the maximum output power of the 220V inverter is a value set by a power limit signal sent by the vehicle body control module in a non-start-stop mode, and the 220V inverter cuts off the output when detecting that the voltage of the storage battery is lower than 11V.
Specifically, in step S5, the start-stop signal determination method is: when the vehicle has no start-stop function, the 220V inverter operates in a non-start-stop mode; when the vehicle has a start-stop function, further judgment is needed, the 220V inverter executes a non-start-stop mode when the vehicle start-stop function is closed, when the vehicle start-stop function is opened and an engine is in an active state, the vehicle body control module sends a signal for allowing output to the 220V inverter, and the 220V inverter executes the non-start-stop mode; when the engine is in an automatic stop state, the vehicle body control module sends a signal which is rapidly output to the 220V inverter, and the 220V inverter executes a start-stop mode; when the engine is in a stop running state, the vehicle body control module sends a signal which is not allowed to be output to the 220V inverter, and the 220V inverter executes a start-stop mode; when the engine is in a restarting state, the vehicle body control module sends a signal for increasing the output power to the 220V inverter, and the 220V inverter executes a start-stop mode; when the engine is in a standby state, the vehicle body control module sends a signal for allowing output to the 220V inverter, and the 220V inverter executes a non-start-stop mode; when the engine is in a starting and stopping function closing state, the vehicle body control module sends a signal for allowing output to the 220V inverter, and the 220V inverter executes a non-starting and stopping mode.
The invention has the beneficial effects that:
according to the control method of the vehicle-mounted 220V inverter with the electric quantity protection, a new function is added on the basis of the original 220V inverter controlled by a hard wire switch by formulating a whole vehicle signal interaction logic and a real-time strategy of the functions of parts, the service life of a battery of a user is effectively protected and the normal use of the automatic start-stop function is effectively protected by judging the start-stop working state of an engine, the allowable power range and the protection logic of function forbidding, and the problem that the service life of the battery of the whole vehicle is damaged because the power-taking interface of the 220V inverter is not disconnected by the user is avoided.
Drawings
FIG. 1 is a flow chart of a control method of a vehicle-mounted 220V inverter with charge protection;
fig. 2 is a block diagram of a vehicle-mounted 220V inverter control system with charge protection.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is further described in detail below with reference to the accompanying drawings and examples. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.
Referring to fig. 1, a method for controlling a vehicle-mounted 220V inverter with charge protection includes the following steps:
s1, an engine management system sends vehicle information, start and stop information and engine state information to a vehicle body control module: vehicle information, start-stop information and engine state information sent by the engine management system are sent to the vehicle body control module through a Controller Area Network (CAN);
s2, the vehicle body control module sends out an enabling signal to control the output command and the output maximum power of the 220V inverter according to the power supply gear, the energy level and the engine state: the vehicle body control module controls the output command of the 220V inverter according to the power supply gear and the energy level, controls the maximum power output by the 220V inverter according to the engine state, sends the brightness mode of the 220V inverter indicator light and the whole vehicle mode signal to a local area network LIN branch line in an enabling signal mode, and sends the signals to the 220V inverter;
S3.220V the inverter judges whether to allow output according to the state of the relay IG2 and the enable signal of the vehicle body control module: the 220V inverter judges whether to allow output according to the state of the relay IG2 and an enabling signal of a vehicle body control module;
S4.220V the inverter allows to output the maximum power which is later detected whether the output of the inverter is over 220V, and feeds back a load signal to the vehicle body control module: the 220V inverter carries out self-diagnosis, feeds back a diagnosis signal to a local area network LIN, monitors output power, feeds back a grade value of the output power to the local area network LIN, and cuts off output when the output power exceeds a limit power; controlling a 220V inverter working indicator lamp to be turned on, and determining the brightness of the working indicator lamp according to a 220V inverter indicator lamp brightness mode signal received from a vehicle body control module;
s5, the vehicle body control module receives a load power signal fed back by the 220V inverter, judges whether to send a start/stop prohibition signal to the engine management system, receives a 220V inverter fault signal, and carries out diagnosis management: the engine management system receives a 220V inverter start-stop prohibition signal sent by the vehicle body control module, prohibits automatic stop, and sends a start-stop prompt signal to a combination instrument module IC of the engine management system, and the 220V inverter cuts off output when detecting that the voltage of the storage battery is lower than 11V.
Referring to fig. 2, which is a structural block diagram of the system of the present invention, the vehicle body control module is responsible for receiving a start state signal and a start/stop state signal of the engine management system, and controlling the 220V inverter to work in combination with energy management; receiving a load power signal fed back by a 220V inverter, and judging whether to send a start/stop prohibition signal to an engine management system; receiving a fault signal of a 220V inverter, and carrying out diagnosis management; sending a 220V inverter indicator light brightness mode signal to a 220V inverter according to the position light state; sending a finished automobile mode signal to a 220V inverter; the 220V inverter is responsible for controlling whether power supply and maximum output power are allowed to be supplied to electrical appliances or not according to the state of the relay IG2 and a serial network LIN control signal sent by a vehicle body control module; self-diagnosis is carried out, and a diagnosis signal is fed back to a local area network LIN bus; monitoring the output power of the local area network (LIN), feeding back the output power level value to the LIN bus, and cutting off the output when the output power exceeds the limit power; controlling a 220V inverter working indicator lamp to be turned on, and determining the brightness of the working indicator lamp according to a received 220V inverter indicator lamp brightness mode signal; the engine management system is responsible for sending an engine state signal and a start-stop working state to a controller area network CAN; receiving a 220V inverter start-stop prohibition signal sent by a vehicle body control module, prohibiting automatic stop, and sending a start-stop prompt signal to a combination instrument module IC;
specifically, in step S2, when the power source gear is turned on and the energy management level is level0, the vehicle body control module determines that the enable condition is satisfied, the vehicle body control module sends an enable signal to the 220V inverter, and the 220V inverter executes an allowable output instruction; when the power supply gear is closed and the energy management level is not level0, the vehicle body control module judges that the enabling condition is not met, the vehicle body control module sends an enabling signal to the 220V inverter, and the 220V inverter executes an output-disallowing instruction.
Specifically, in step S2, the vehicle body control module needs to control the maximum power allowed to be output by the 220V inverter according to the engine state, when the enable signal received by the 220V inverter is allowed to be output, the engine is in an operating state, and the inverter outputs 400 watts of power; the running state of the engine is non-running, and the output power of the inverter is 200 watts; when the enabling condition received by the 220V inverter is not met, the engine management system sends an engine state signal to be running or non-running, and at the moment, the vehicle body control module sends a power limiting signal to control the 220V inverter to be closed. The maximum output power of the body control module for controlling the 220V inverter is shown in table 1:
TABLE 1 maximum output power meter for car body control module to control 220V inverter
Specifically, in step S3, the 220V inverter determines whether to allow output according to the state of the relay IG2 and the enable signal of the vehicle body control module: when the signal of the relay IG2 is high and effective, the 220V inverter is allowed to output when the enabling signal received by the 220V inverter is that the output condition of the 220V inverter is open; when the received enabling signal is that the output condition of the 220V inverter is closed, the 220V inverter does not allow output; when a local area network LIN signal is disconnected, when the local area network LIN signal is not detected in a power-on mode or when a 220V inverter receives a signal before the local area network LIN signal is disconnected and the output condition of the 220V inverter is opened, the 220V inverter continues to output for 20 minutes after the local area network LIN signal is disconnected; when the signal received by the 220V inverter before the local area network LIN signal is disconnected is the condition of 220V inverter output closing, the 220V inverter stops outputting after the local area network LIN signal is disconnected. In the process, when the power supply of the whole vehicle is in an open gear and the vehicle body control module controls the IG2 to be switched off, the vehicle body control module does not remember a fault code when detecting that the 220V inverter is disconnected, and maintenance diagnosis is not needed. The body control module determines whether to send an enable signal to the 220V inverter as shown in table 2:
table 2 determination table of whether vehicle body control module transmits enable signal to 220V inverter
Specifically, in step S4, when the 220V inverter detects that the output power exceeds the limit power, the output is cut off, the output is output again after 5 seconds, the output power is detected again, if the output power is lower than the limit power, the output is normally output, if the output power exceeds the limit power, the output is cut off again, and the above steps are repeated for 5 times; the 5 th time still detecting the overpower requires powering down and then up to continue to allow output.
Specifically, in step S5, if the 220V inverter detects that the vehicle body control module is disconnected, the 220V inverter limits the maximum output power to 100 watts on the premise that the 220V inverter allows enabling; the vehicle type with the start-stop function is in an open state, the vehicle body control module needs to control whether the 220V inverter enters a start-stop mode or not according to a start-stop state signal, the maximum output power of the 220V inverter is limited to 200 watts in the start-stop mode, the 220V inverter can keep outputting when detecting that the voltage of the storage battery is temporarily lower than 11V in the starting process, the maximum output power of the 220V inverter is a value set by the power limit signal sent by the vehicle body control module in the non-start-stop mode, and the 220V inverter can cut off the output when detecting that the voltage of the storage battery is lower than 11V.
Specifically, in step S5, the start-stop signal determination method is: when the vehicle has no start-stop function, the 220V inverter operates in a non-start-stop mode; when the vehicle has a start-stop function, further judgment is needed, the 220V inverter executes a non-start-stop mode when the vehicle start-stop function is closed, when the vehicle start-stop function is opened and an engine is in an active state, the vehicle body control module sends a signal for allowing output to the 220V inverter, and the 220V inverter executes the non-start-stop mode; when the engine is in an automatic stop state, the vehicle body control module sends a signal which is rapidly output to the 220V inverter, and the 220V inverter executes a start-stop mode; when the engine is in a stop running state, the vehicle body control module sends a signal which is not allowed to be output to the 220V inverter, and the 220V inverter executes a start-stop mode; when the engine is in a restarting state, the vehicle body control module sends a signal for increasing the output power to the 220V inverter, and the 220V inverter executes a start-stop mode; when the engine is in a standby state, the vehicle body control module sends a signal for allowing output to the 220V inverter, and the 220V inverter executes a non-start-stop mode; when the engine starting and stopping function is in a closed state, the vehicle body control module sends a signal for allowing output to the 220V inverter, and the 220V inverter executes a non-starting and stopping mode. The operation logic of the body control module for controlling the 220V inverter in the start-stop mode is shown in table 3:
TABLE 3 running logic table of 220V inverter controlled by vehicle body control module in start-stop mode
In summary, according to the control method of the vehicle-mounted 220V inverter with electric quantity protection, a new function is added on the basis of the original hard-wired switch-controlled 220V inverter by formulating a whole vehicle signal interaction logic and a real-time strategy of part functions, the service life of a battery of a user is effectively protected and the normal use of an automatic start-stop function is avoided by judging the start-stop working state of an engine, the allowable power range and the protection logic of function forbidding, and the problem that the service life of the battery of the whole vehicle is damaged because the power-taking interface of the 220V inverter is not disconnected by the user is avoided.
The above description is only an embodiment of the present invention, and not intended to limit the scope of the present invention, and all equivalent modifications made by the present invention and the contents of the drawings or directly or indirectly applied to the related technical fields are included in the scope of the present invention.
Claims (7)
1. A control method of a vehicle-mounted 220V inverter with charge protection is characterized by comprising the following steps: the method comprises the following steps:
s1, the engine management system sends the vehicle information, the start and stop information and the engine state information to the vehicle body control module: vehicle information, start-stop information and engine state information sent by the engine management system are sent to the vehicle body control module through a Controller Area Network (CAN);
s2, the vehicle body control module sends out an enabling signal to control the output command and the output maximum power of the 220V inverter according to the power supply gear, the energy level and the engine state: the vehicle body control module controls the output command of the 220V inverter according to the power supply gear and the energy level, controls the maximum power output by the 220V inverter according to the engine state, sends the brightness mode of the 220V inverter indicator light and the whole vehicle mode signal to a local area network LIN branch line in an enabling signal mode, and sends the signals to the 220V inverter;
S3.220V the inverter judges whether to allow output according to the state of the relay IG2 and the enable signal of the vehicle body control module: the 220V inverter judges whether to allow output according to the state of the relay IG2 and an enabling signal of a vehicle body control module;
S4.220V the inverter allows to output the maximum power which is detected whether to exceed the maximum power allowed by the vehicle body control module after the inverter detects that the maximum power exceeds the maximum power allowed by the vehicle body control module, and feeds back a load signal to the vehicle body control module: the 220V inverter carries out self-diagnosis, feeds back a diagnosis signal to a local area network LIN, monitors output power, feeds back a grade value of the output power to the local area network LIN, and cuts off output when the output power exceeds a limit power; controlling a 220V inverter working indicator lamp to be turned on, and determining the brightness of the working indicator lamp according to a 220V inverter indicator lamp brightness mode signal received from a vehicle body control module;
s5, the vehicle body control module receives a load power signal fed back by the 220V inverter, judges whether to send a start and stop prohibition signal to the engine management system, receives a 220V inverter fault signal, and carries out diagnosis management: the engine management system receives a 220V inverter start-stop prohibition signal sent by the vehicle body control module, prohibits automatic stop, and sends a start-stop prompt signal to a combination instrument module IC of the engine management system, and the 220V inverter cuts off output when detecting that the voltage of the storage battery is lower than 11V.
2. The control method of the vehicle-mounted 220V inverter with charge protection according to claim 1, characterized in that: in the step S2, when the power source gear is on and the energy management level is level0, the vehicle body control module determines that the enabling condition is satisfied, the vehicle body control module sends an enabling signal to the 220V inverter, and the 220V inverter executes an allowable output instruction; when the power supply gear is closed and the energy management level is not level0, the vehicle body control module judges that the enabling condition is not met, the vehicle body control module sends an enabling signal to the 220V inverter, and the 220V inverter executes an output-disallowed instruction.
3. The control method of the vehicle-mounted 220V inverter with charge protection according to claim 1, characterized in that: in the step S2, the vehicle body control module needs to control the maximum power allowed to be output by the 220V inverter according to the engine state, when the enable signal received by the 220V inverter is allowed to be output, the engine is in operation in the operation state, and the inverter outputs 400 watts of power; the running state of the engine is non-running, and the output power of the inverter is 200 watts; when the enabling condition received by the 220V inverter from the vehicle body controller is not met, the engine state signal sent to the vehicle body controller by the engine management system is running or non-running, and at the moment, the vehicle body control module sends a power limiting signal to control the 220V inverter to be closed.
4. The charged-quantity-protection vehicle-mounted 220V inverter control method according to claim 1, characterized in that: in step S3, the 220V inverter determines whether to allow output based on the state of relay IG2 and the enable signal of the vehicle body control module: when the signal of the relay IG2 is high and effective, the 220V inverter is allowed to output when the enabling signal received by the 220V inverter is that the output condition of the 220V inverter is not equal to 0; when the received enable signal is that the output condition of the 220V inverter is equal to 0, the 220V inverter does not allow output; when a local area network LIN signal of the 220V inverter is disconnected, when the local area network LIN signal is not detected in power-on or when the output condition of the 220V inverter is that the 220V inverter receives a signal before the local area network LIN signal is disconnected is not equal to 0, the 220V inverter continues to output for 20 minutes after the local area network LIN signal is disconnected; when the condition that the output of the 220V inverter is equal to 0 is the signal received by the 220V inverter before the local area network LIN signal is disconnected, the 220V inverter keeps not allowing to output after the local area network LIN signal is disconnected.
5. The control method of the vehicle-mounted 220V inverter with charge protection according to claim 1, characterized in that: in step S4, when the 220V inverter detects that the output power exceeds the limit power, the output is cut off, the output is output again after 5 seconds, the output power is detected again, if the output power is lower than the limit power, the output is normally output, if the output power exceeds the limit power, the output is cut off again, and the above steps are repeated for 5 times; and 5, if the over-power is still detected, the power is required to be turned off, and the power is turned on again to allow output.
6. The charged-quantity-protection vehicle-mounted 220V inverter control method according to claim 1, characterized in that: in step S5, if the 220V inverter detects that the vehicle body control module is disconnected, the 220V inverter limits the maximum output power to 100 watts on the premise that the 220V inverter allows enabling; the vehicle type with the start-stop function is in an open state, the vehicle body control module needs to control whether the 220V inverter enters a start-stop mode or not according to a start-stop state signal, the maximum output power of the 220V inverter is limited to 200 watts in the start-stop mode, the 220V inverter keeps outputting when detecting that the voltage of a storage battery is temporarily lower than 11V in the starting process, the maximum output power of the 220V inverter is a value set by a power limit signal sent by the vehicle body control module in a non-start-stop mode, and the 220V inverter cuts off the output when detecting that the voltage of the storage battery is lower than 11V.
7. The control method of the vehicle-mounted 220V inverter with charge protection according to claim 1, characterized in that: in step S5, the start/stop signal determination method is: when the vehicle has no start-stop function, the 220V inverter operates in a non-start-stop mode; when the vehicle has a start-stop function, further judgment is needed, the 220V inverter executes a non-start-stop mode when the vehicle start-stop function is closed, when the vehicle start-stop function is opened and an engine is in an active state, the vehicle body control module sends a signal for allowing output to the 220V inverter, and the 220V inverter executes the non-start-stop mode; when the engine is in an automatic stop state, the vehicle body control module sends a signal which is rapidly output to the 220V inverter, and the 220V inverter executes a start-stop mode; when the engine is in a stop running state, the vehicle body control module sends a signal which is not allowed to be output to the 220V inverter, and the 220V inverter executes a start-stop mode; when the engine is in a restarting state, the vehicle body control module sends a signal for increasing the output power to the 220V inverter, and the 220V inverter executes a start-stop mode; when the engine is in a standby state, the vehicle body control module sends a signal for allowing output to the 220V inverter, and the 220V inverter executes a non-start-stop mode; when the engine is in a starting and stopping function closing state, the vehicle body control module sends a signal for allowing output to the 220V inverter, and the 220V inverter executes a non-starting and stopping mode.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210749613.XA CN114977854A (en) | 2022-06-28 | 2022-06-28 | Control method of vehicle-mounted 220V inverter with electric quantity protection |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210749613.XA CN114977854A (en) | 2022-06-28 | 2022-06-28 | Control method of vehicle-mounted 220V inverter with electric quantity protection |
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| CN114977854A true CN114977854A (en) | 2022-08-30 |
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| CN202210749613.XA Pending CN114977854A (en) | 2022-06-28 | 2022-06-28 | Control method of vehicle-mounted 220V inverter with electric quantity protection |
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| Country | Link |
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| CN (1) | CN114977854A (en) |
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