CN211765363U - Vehicle-mounted intelligent power management system based on CAN bus - Google Patents
Vehicle-mounted intelligent power management system based on CAN bus Download PDFInfo
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- CN211765363U CN211765363U CN202020400351.2U CN202020400351U CN211765363U CN 211765363 U CN211765363 U CN 211765363U CN 202020400351 U CN202020400351 U CN 202020400351U CN 211765363 U CN211765363 U CN 211765363U
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Abstract
The utility model relates to an on-vehicle intelligent power management system based on CAN bus to intelligence vehicle mounted power, intelligent direct current distribution box and intelligent inverter are the core, utilize CAN bus communication to realize the supervision and the control to vehicle power status information. The intelligent vehicle-mounted power supply is connected with the intelligent direct-current distribution box, the intelligent inverter and the battery pack through a CAN communication bus. The intelligent direct current distribution box and the sensors of the output interfaces of the intelligent inverter form each terminal node of the monitoring network, the intelligent vehicle-mounted power supply performs fusion processing and storage on data collected by each node in the system, and the data are uniformly reported to the power supply management software through the Ethernet interface. The working state sampling data of all power output interfaces in the system can be displayed on a control terminal computer in real time. The system improves the operability and reliability of monitoring and managing the power state of the vehicle-mounted equipment, provides necessary power supply guarantee for the vehicle-mounted equipment, and also provides sufficient information resources for state monitoring, fault diagnosis and comprehensive guarantee of the automobile.
Description
Technical Field
The utility model relates to a power control technology field, in particular to on-vehicle intelligent power management system is applicable to the car of applying CAN bus technique.
Background
In recent years, with the continuous expansion of the application field of vehicles, especially the wide use of various special vehicles such as ambulances, fire trucks, police vehicles, engineering rescue vehicles, military surveillance vehicles and the like and the gradual improvement of the requirements on the functions of the vehicles, more and more electrical equipment in the vehicles are integrated from the original single equipment to various equipment, so that the requirements on the power utilization are greatly increased while the functionality and the riding comfort are improved, and higher requirements are provided for the vehicle-mounted power management.
The traditional power distribution mode of a vehicle is based on a relay, a contactor, an air switch and a fuse, most of power supplies are manually switched to control a main road, most of power supplies cannot control a specific output interface, detailed working states of a power supply system cannot be obtained, and load management is particularly difficult, so that the design of an intelligent and efficient power supply management system becomes a development requirement.
Disclosure of Invention
The to-be-solved technical problem of the utility model is: in order to overcome the problems of insufficient intelligent degree and inconvenient management of the traditional vehicle power management in the prior art, the vehicle-mounted intelligent power management system based on the CAN bus is provided.
The utility model provides a technical scheme that its technical problem adopted is: a vehicle-mounted intelligent power management system based on a CAN bus comprises an intelligent vehicle-mounted management power supply, an intelligent direct-current distribution box, an intelligent inverter and a battery box; the intelligent vehicle-mounted power supply is connected with the intelligent direct-current distribution box, the intelligent inverter and the battery box through a CAN communication bus; the output interfaces of the intelligent direct current distribution box and the intelligent inverter are connected with the input interface of the powered device; the intelligent direct current distribution box and the sensors of the output interfaces of the intelligent inverter form a terminal node of a monitoring network; the intelligent vehicle-mounted power supply performs fusion processing and storage on data acquired by each node in the system, and the data is reported to the equipment management component by the Ethernet communication interface so as to display the working state sampling data of the power supply equipment on the control terminal computer; the intelligent vehicle-mounted power supply is used for providing direct current required by the vehicle-mounted equipment, performing charging management on the battery pack in the battery box and performing Ethernet communication with power supply management software on the control terminal computer; the intelligent direct current distribution box is used for distributing the power of the direct current power supply equipment; the intelligent inverter is used for generating and distributing alternating current required by the equipment; the battery box is used for providing uninterrupted direct current power supply.
Further, the intelligent vehicle-mounted power supply comprises: the AC/DC module is connected with the alternating current input interface and is used for outputting direct current; the DC/DC charging module is connected with the direct current output interface of the AC/DC module and the direct current input interface of the battery box and is used for charging the battery pack; the linear voltage stabilizing module is connected with the direct current input equipment and used for outputting direct current with stable voltage and charging the battery pack; the alternating current selection module comprises a single chip microcomputer, is connected with the solid-state relay, the direct current contactor, the alternating current slow start module, the AC/DC module, the DC/DC module and the linear voltage stabilizing module, and is used for completing the sampling, control and protection functions of the whole machine; the display module is communicated with the alternating current selection module by adopting a CAN (controller area network) and is used for finishing input and output of the vehicle-mounted power supply, fault state indication and battery electric quantity indication; the I/O expansion module is communicated with the alternating current selection module through a CAN (controller area network) and used for completing power distribution switch state acquisition and power distribution output state indication, and reporting vehicle-mounted power supply state information to an equipment management component through one path of independent CAN bus communication.
Preferably, the ac input interface includes: the system comprises a commercial power alternating current interface, an external generator interface and a silicon rectifier generator interface.
Further, the intelligent dc distribution box includes: the intelligent power distribution control module is connected with the intelligent vehicle-mounted power supply through a CAN2 bus, is used for monitoring corresponding output voltage and current, provides output overvoltage, overcurrent, overtemperature and other protection, and uploads sampling information and fault information to the intelligent power distribution control module through a CAN1 bus; and the intelligent power module is connected with the direct current input interface through a reverse diode, communicates with the intelligent power module through a CAN1 bus, communicates with an intelligent vehicle-mounted power supply through a CAN2 bus, and is used for comprehensively processing and displaying all modules in the direct current distribution box.
Further, the smart inverter includes: the boosting module is connected with the direct current input interface and the inversion module and is used for converting direct current input into high-voltage direct current, converting the high-voltage direct current into stable alternating current through the inversion module, and outputting the alternating current to alternating current power equipment for use after filtering and purifying; the DSP control module is in bidirectional communication connection with the boost module and is used for finishing direct current contactor control, boost module on-off control and inversion module on-off control, finishing sampling of direct current input voltage, alternating current output current and the temperature of the whole machine and carrying out corresponding processing on a sampling result so as to finish a corresponding protection function; and the display module is in CAN communication connection with the DSP control module and is used for finishing direct current input, alternating current output and fault state indication of the inverter power supply.
Further, the boost module includes: the boost chopper circuit is connected with an input end connected with the direct current input filter and an output end connected with the inverter circuit, the boost chopper circuit is composed of a charging circuit, a filter reactor, a chopper current transformer, a parallel diode group, a diode protection capacitor, an absorption circuit, a parallel MOSFET group and a parallel capacitor group, one end of the charging circuit is connected with a first input end of the direct current input interface, and the other end of the charging circuit is respectively connected with the filter reactor and a second input end of the direct current input interface and used for charging the boost chopper circuit; one end of the filter reactor is connected with the charging circuit, and the other end of the filter reactor is respectively connected with the chopping current transformer and the parallel diode group and used for regulating passing voltage; one end of the chopping current transformer is connected with the filter reactor, and the other end of the chopping current transformer is respectively connected with the absorption circuit and the parallel MOSFET tube group and is used for detecting the current flowing through the parallel MOSFET tube group; one end of the parallel diode group is respectively connected with the filter reactor, the chopping current transformer and the diode protection capacitor, and the other end of the parallel diode group is connected with the first output end and used for preventing reverse current; one end of the diode protection capacitor is connected with the parallel diode group, and the other end of the diode protection capacitor is connected with the first output end and used for protecting the parallel diode group, so that the diode protection capacitor plays a role in buffering when the parallel diode group is switched on and switched off in a reverse direction and prevents spike voltage breakdown; the absorption circuit is connected with the parallel MOSFET tube group in parallel, one end of the absorption circuit is connected with the chopping current transformer, and the other end of the absorption circuit is connected with the second output end and used for protecting the parallel MOSFET tube group from being broken down when the parallel MOSFET tube group is switched on and switched off; the parallel MOSFET tube group is connected with the absorption circuit in parallel, one end of the parallel MOSFET tube group is connected with the chopping current transformer, and the other end of the parallel MOSFET tube group is connected with the second output end and used for controlling the conduction and the cut-off; one end of the parallel capacitor bank is connected with the first output end, and the other end of the parallel capacitor bank is connected with the second output end and used for charging.
Further, the charging circuit is composed of an air switch connected with the first resistor in parallel and a supporting capacitor connected with the air switch in series.
Preferably, the air switch is composed of a dc contactor and a first diode connected in parallel.
Preferably, the support capacitor is formed by a first capacitor and a second capacitor connected in parallel.
Further, the parallel diode group is composed of two groups of diodes connected in parallel.
Further, the absorption circuit is composed of a capacitor and a diode which are connected in parallel.
Further, the parallel MOSFET tube group is composed of a first MOSFET tube and a second MOSFET tube which are connected in parallel.
Preferably, the gates G of the first MOSFET and the second MOSFET are connected to a resistor and a diode connected in series, and are connected to the source S through the resistor.
Further, the parallel capacitor bank is composed of two capacitors connected in parallel.
The utility model has the advantages that: the intelligent vehicle-mounted power supply, the intelligent direct-current distribution box and the intelligent inverter are used as cores, and the monitoring and control of the vehicle power supply state information are realized by utilizing CAN bus communication. The intelligent vehicle-mounted power supply is connected with the intelligent direct-current distribution box, the intelligent inverter and the battery pack through a CAN communication bus. The intelligent direct current distribution box and the sensors of the output interfaces of the intelligent inverter form each terminal node of the monitoring network, the intelligent vehicle-mounted power supply performs fusion processing and storage on data collected by each node in the system, and the data are uniformly reported to the power supply management software through the Ethernet interface. The working state sampling data of all power output interfaces in the system can be displayed on a control terminal computer in real time. The system improves the operability and reliability of monitoring and managing the power state of the vehicle-mounted equipment, not only provides necessary power supply guarantee for the vehicle-mounted equipment, but also provides sufficient information resources for state monitoring, fault diagnosis and comprehensive guarantee of the automobile.
Drawings
The present invention will be further explained with reference to the drawings and examples.
FIG. 1 is a schematic diagram of the overall structure of the vehicle-mounted intelligent power management system of the present invention;
FIG. 2 is a schematic block diagram of the intelligent DC distribution box of the present invention;
FIG. 3 is a block diagram of the intelligent inverter of the present invention;
fig. 4 is the boost chopper circuit diagram in the boost module of the intelligent inverter of the present invention.
In the figure: 100. charging circuit, 101, absorption circuit.
Detailed Description
The present invention will now be described in further detail with reference to the accompanying drawings. These drawings are simplified schematic drawings and illustrate the basic structure of the present invention only in a schematic manner, and thus show only the components related to the present invention.
The utility model relates to an on-vehicle intelligent power management system based on CAN bus, its system overall structure is shown in figure 1. The system comprises an intelligent vehicle-mounted management power supply, three intelligent direct current distribution boxes, an intelligent inverter and a battery box, and can convert alternating current input, silicon rectifier generator input and battery pack input power supply in the battery box into a power supply output form required by equipment.
The connection relationship of each component in the vehicle-mounted intelligent power management system based on the CAN bus is that the intelligent vehicle-mounted power is connected with the intelligent direct current distribution box, the intelligent inverter and the battery box through the CAN communication bus; the output interfaces of the intelligent direct current distribution box and the intelligent inverter are connected with the input interface of the powered device; the intelligent direct current distribution box and the sensors of the output interfaces of the intelligent inverter form a terminal node of a monitoring network; the intelligent vehicle-mounted power supply performs fusion processing and storage on data collected by each node in the system, and the data is reported to the equipment management component by the Ethernet communication interface so as to display the working state sampling data of the power supply equipment on the control terminal computer.
The function of each component in the vehicle-mounted intelligent power management system based on the CAN bus is described as follows:
the intelligent vehicle-mounted power supply is used for providing DC24V direct current required by vehicle-mounted equipment, carrying out charging management on the battery pack in the battery box and carrying out Ethernet communication with power supply management software on a control terminal computer.
The intelligent DC distribution box is used to distribute power to DC24V DC powered devices.
The smart inverter is used to generate and distribute AC220V AC power required by the equipment.
The battery box is used for providing uninterrupted direct current power supply.
On-vehicle intelligent power management system based on CAN bus possesses and is no less than three routes power input interface: when the alternating current is input, the rated value is 220V/50Hz, the allowable range is 176V-264V, and the frequency is 50Hz +/-3.5 Hz; when the silicon rectifier generator is input, the rated voltage is 28V, and the allowable range is 24.5V-31.5V; when the battery pack in the battery box is input, the rated voltage is 24V, and the allowable range of the lithium ion battery pack is 21.0V-29.4V.
The vehicle-mounted intelligent power management system based on the CAN bus is provided with not less than 50 DC24V direct-current power output interfaces: when alternating current is input, the output voltage is DC25.5V +/-0.5V, the source effect is not more than 2%, the load effect is not more than 3%, and the effective value of output ripple is not more than 20 mV; when the input of the silicon rectifying generator and the input of the battery pack in the battery box are input, the output voltage is not more than DC25.2V +/-0.5V, and the effective value of output ripple is not more than 20 mV. When the alternating current is input, the power factor of the vehicle-mounted power supply is not less than 0.93.
The intelligent vehicle-mounted power supply in the vehicle-mounted intelligent power supply management system based on the CAN bus comprises: the device comprises an AC/DC module, a DC/DC charging module, a linear voltage stabilizing module, an alternating current selection module, a display module, an I/O expansion module, an auxiliary power supply module, an Ethernet converter, an alternating current filter, a circuit breaker and an electric connector.
The power input of the intelligent vehicle-mounted power supply is provided by alternating current commercial power, an external generator, a silicon rectifier generator and a lithium battery pack.
The connection relation and the function among the modules of the intelligent vehicle-mounted power supply are as follows: the AC/DC module is connected with the alternating current input interface and is used for outputting DC25.5V direct current; the DC/DC charging module is connected with the direct current output interface of the AC/DC module and the direct current input interface of the battery box and is used for charging the battery pack; the linear voltage stabilizing module is connected with the direct current input equipment and used for outputting direct current not higher than DC25.2V and charging the battery pack; the alternating current selection module comprises a single chip microcomputer, is connected with the solid-state relay, the direct current contactor, the alternating current slow start module, the AC/DC module, the DC/DC module and the linear voltage stabilizing module, and is used for completing the sampling, control and protection functions of the whole machine; the display module is communicated with the alternating current selection module by adopting a CAN (controller area network) and is used for finishing input and output of the vehicle-mounted power supply, fault state indication and battery electric quantity indication; the I/O expansion module is communicated with the alternating current selection module through a CAN (controller area network) and used for completing power distribution switch state acquisition and power distribution output state indication, and reporting vehicle-mounted power supply state information to an equipment management component through one path of independent CAN bus communication.
The functional block diagram of the intelligent dc distribution box is shown in fig. 2, and the internal modules of the intelligent dc distribution box mainly include: the intelligent power distribution control module, the intelligent power module, the electric connector and the reverse diode. The intelligent direct current distribution box distributes the input direct current to direct current electric equipment for use through an intelligent power module with corresponding power, receives a power distribution control signal through a CAN bus, completes the control and state display functions of the direct current equipment, and is provided with power distribution output short circuit and overcurrent protection functions.
The connection relation and the function among all modules of the intelligent direct current distribution box are as follows: the intelligent power distribution control module is connected with the intelligent vehicle-mounted power supply through a CAN2 bus, is used for monitoring corresponding output voltage and current, provides output overvoltage, overcurrent, overtemperature and other protection, and uploads sampling information and fault information to the intelligent power distribution control module through a CAN1 bus; and the intelligent power module is connected with the direct current input interface through a reverse diode, communicates with the intelligent power module through a CAN1 bus, communicates with an intelligent vehicle-mounted power supply through a CAN2 bus, and is used for comprehensively processing and displaying all modules in the direct current distribution box.
A schematic block diagram of the smart inverter is shown in fig. 3, and the internal modules of the smart inverter mainly include: the device comprises a boosting module, a DSP control module, an inversion module, a display module, a direct current contactor, an alternating current filter, a direct current filter and an electric connector. The inverter power supply converts the input DC24V direct current into high-voltage direct current through filtering and purifying treatment and an isolation boosting component, and finally the high-voltage direct current is converted into AC220V alternating current meeting the requirements through the inverter component and is output to the AC electric equipment for use.
The connection relation and the function among the modules of the intelligent inverter are as follows: the boosting module is connected with the direct current input interface and the inversion module and is used for converting direct current input into high-voltage direct current, converting the high-voltage direct current into stable alternating current through the inversion module, and outputting the alternating current to alternating current power equipment for use after filtering and purifying; the DSP control module is in bidirectional communication connection with the boost module and is used for finishing direct current contactor control, boost module on-off control and inversion module on-off control, finishing sampling of direct current input voltage, alternating current output current and the temperature of the whole machine and carrying out corresponding processing on a sampling result so as to finish a corresponding protection function; and the display module is in CAN communication connection with the DSP control module and is used for finishing direct current input, alternating current output and fault state indication of the inverter power supply.
In this embodiment, the boost module in the smart inverter includes: the boost chopper circuit is connected with an input end connected with a direct current input filter and an output end connected with an inverter circuit, the boost chopper circuit is composed of a charging circuit 100, a filter reactor L1, a chopper current transformer U1, a parallel diode group, a diode protection capacitor C3, an absorption circuit 101, a parallel MOSFET group and a parallel capacitor group, one end of the charging circuit 100 is connected with a first input end J1 with a 24V direct current input interface as a positive pole, the other end of the charging circuit is respectively connected with a filter reactor L1 of 100 mu H/20A and a second input end J2 with a 24V direct current input interface as a negative pole and used for charging the boost chopper circuit, the charging circuit 100 is composed of an air switch connected with a first resistor R1 of 100 omega/40W in parallel and a support capacitor connected with the air switch in series, the air switch is composed of a direct current contactor KM1 with the model of 3TF300 and a first diode D1 with the model of 1N4007 in parallel, the support capacitor is composed of a first capacitor C1 of 10 muF/250V and a second capacitor C2 of 2.2mF/200V which are connected in parallel, after an air switch is closed, the direct current contactor KM1 is controlled to be disconnected, direct current voltage charges the support capacitor through a first resistor R1, after charging is completed, the direct current contactor KM1 is closed, and the inverter starts to work;
one end of the filter reactor L1 is connected with the charging circuit 100, and the other end is respectively connected with a chopping current transformer U1 with the change ratio of 100/1A and a parallel diode group, and is used for regulating passing voltage;
one end of a chopping current transformer U1 is connected with a filter reactor L1, and the other end of the chopping current transformer U1 is respectively connected with an absorption circuit 101 and a parallel MOSFET tube group and is used for detecting the current flowing through the parallel MOSFET tube group;
the parallel diode group is composed of two groups of diodes which are connected in parallel, wherein one group of diodes is composed of a second diode D2 of 60A/300V and a second diode D2 'of 60A/300V which are connected in parallel, the other group of diodes is composed of a third diode D3 of 60A/300V and a third diode D3' of 60A/300V which are connected in parallel, and the two groups of diodes are connected in parallel. One end of the parallel diode group is respectively connected with the filter reactor L1, the chopper current transformer U1 and the diode protection capacitor C3, and the other end of the parallel diode group is connected with the 140V direct current first output end P1 for preventing reverse current.
The diode protection capacitor C3 has a parameter of 2 x 2.2nF, one end of which is connected to the parallel diode group, and the other end of which is connected to the 140V dc first output terminal P1, for protecting the parallel diode group, and playing a role of buffering when the parallel diode group is turned on and turned off in the reverse direction, so as to prevent the spike voltage breakdown.
The absorption circuit 101 is composed of a capacitor C0 and a diode D0 which are connected in parallel, the parameter of C0 is 2 x 2.2Nf, the absorption circuit 101 is connected with the parallel MOSFET tube group in parallel, one end of the absorption circuit is connected with the chopping current transformer U1, and the other end of the absorption circuit is connected with the 140V direct current second output end P2 and used for protecting the parallel MOSFET tube group from being broken down when the parallel MOSFET tube group is switched on and switched off.
The parallel MOSFET group is composed of a first MOSFET M1 with the parameter of 250V/55A and a second MOSFET M2 with the parameter of 250V/55A, the parallel MOSFET group is connected with the absorption circuit 101 in parallel, one end of the parallel MOSFET group is connected with the chopping current transformer U1, and the other end of the parallel MOSFET group is connected with a 140V direct current second output end P2 and used for controlling on and off. The grid G of the first MOSFET M1 is connected with a series connection of a fourth resistor R4 of 5 omega, a fifth resistor R5 of 10 omega and a fourth diode D4, and is connected with the source S thereof through a sixth resistor R6 of 1K omega; the gate G of the second MOSFET M2 is connected to a seventh resistor R7 of 5 Ω, an eighth resistor R8 of 10 Ω and a fifth diode D5 in series, and to the source S through a ninth resistor R9 of 1K Ω.
The parallel capacitor bank is composed of three capacitors connected in parallel, namely a fourth capacitor C4 of 10 muF, a fifth capacitor C5 of 10 muF and a sixth capacitor C6 of 10 muF, one end of the parallel capacitor bank is connected with the 140V direct current first output end P1, and the other end of the parallel capacitor bank is connected with the 140V direct current second output end P2 for charging.
The utility model discloses use intelligent vehicle mounted power, intelligent direct current distribution box and intelligent dc-to-ac converter as the core, utilize CAN bus communication to realize the supervision and the control to vehicle power state information. The intelligent vehicle-mounted power supply is connected with the intelligent direct-current distribution box, the intelligent inverter and the battery pack through a CAN communication bus. The intelligent direct current distribution box and the sensors of the output interfaces of the intelligent inverter form each terminal node of the monitoring network, the intelligent vehicle-mounted power supply performs fusion processing and storage on data collected by each node in the system, and the data are uniformly reported to the power supply management software through the Ethernet interface. The working state sampling data of all power output interfaces in the system can be displayed on a control terminal computer in real time. The system improves the operability and reliability of monitoring and managing the power state of the vehicle-mounted equipment, not only provides necessary power supply guarantee for the vehicle-mounted equipment, but also provides sufficient information resources for state monitoring, fault diagnosis and comprehensive guarantee of the automobile.
In light of the foregoing, it will be apparent to those skilled in the art from this disclosure that various changes and modifications can be made without departing from the spirit and scope of the invention. The technical scope of the present invention is not limited to the content of the specification, and must be determined according to the scope of the claims.
Claims (14)
1. The utility model provides a vehicle-mounted intelligent power management system based on CAN bus which characterized in that: the intelligent vehicle-mounted management power supply comprises an intelligent vehicle-mounted management power supply, an intelligent direct-current distribution box, an intelligent inverter and a battery box; the intelligent vehicle-mounted power supply is connected with the intelligent direct-current distribution box, the intelligent inverter and the battery box through a CAN communication bus; the output interfaces of the intelligent direct current distribution box and the intelligent inverter are connected with the input interface of the powered device; the intelligent direct current distribution box and the sensors of the output interfaces of the intelligent inverter form a terminal node of a monitoring network; the intelligent vehicle-mounted power supply performs fusion processing and storage on data acquired by each node in the system, and the data is reported to the equipment management component by the Ethernet communication interface so as to display the working state sampling data of the power supply equipment on the control terminal computer;
the intelligent vehicle-mounted power supply is used for providing direct current required by the vehicle-mounted equipment, performing charging management on the battery pack in the battery box and performing Ethernet communication with power supply management software on the control terminal computer;
the intelligent direct current distribution box is used for distributing the power of the direct current power supply equipment;
the intelligent inverter is used for generating and distributing alternating current required by the equipment; the battery box is used for providing uninterrupted direct current power supply.
2. The CAN bus-based onboard intelligent power management system of claim 1, wherein the intelligent onboard power supply comprises:
the AC/DC module is connected with the alternating current input interface and is used for outputting direct current;
the DC/DC charging module is connected with the direct current output interface of the AC/DC module and the direct current input interface of the battery box and is used for charging the battery pack;
the linear voltage stabilizing module is connected with the direct current input equipment and used for outputting direct current with stable voltage and charging the battery pack;
the alternating current selection module comprises a single chip microcomputer, is connected with the solid-state relay, the direct current contactor, the alternating current slow start module, the AC/DC module, the DC/DC module and the linear voltage stabilizing module, and is used for completing the sampling, control and protection functions of the whole machine;
the display module is communicated with the alternating current selection module by adopting a CAN (controller area network) and is used for finishing input and output of the vehicle-mounted power supply, fault state indication and battery electric quantity indication;
the I/O expansion module is communicated with the alternating current selection module through a CAN (controller area network) and used for completing power distribution switch state acquisition and power distribution output state indication, and reporting vehicle-mounted power supply state information to an equipment management component through one path of independent CAN bus communication.
3. The CAN-bus based onboard intelligent power management system of claim 2, wherein the ac input interface comprises: the system comprises a commercial power alternating current interface, an external generator interface and a silicon rectifier generator interface.
4. The CAN bus-based on-board intelligent power management system of claim 1, wherein the intelligent dc distribution box comprises:
the intelligent power distribution control module is connected with the intelligent vehicle-mounted power supply through a CAN2 bus, is used for monitoring corresponding output voltage and current, provides output overvoltage, overcurrent, overtemperature and other protection, and uploads sampling information and fault information to the intelligent power distribution control module through a CAN1 bus;
and the intelligent power module is connected with the direct current input interface through a reverse diode, communicates with the intelligent power module through a CAN1 bus, communicates with an intelligent vehicle-mounted power supply through a CAN2 bus, and is used for comprehensively processing and displaying all modules in the direct current distribution box.
5. The CAN bus-based onboard intelligent power management system of claim 1, wherein the intelligent inverter comprises:
the boosting module is connected with the direct current input interface and the inversion module and is used for converting direct current input into high-voltage direct current, converting the high-voltage direct current into stable alternating current through the inversion module, and outputting the alternating current to alternating current power equipment for use after filtering and purifying;
the DSP control module is in bidirectional communication connection with the boost module and is used for finishing direct current contactor control, boost module on-off control and inversion module on-off control, finishing sampling of direct current input voltage, alternating current output current and the temperature of the whole machine and carrying out corresponding processing on a sampling result so as to finish a corresponding protection function;
and the display module is in CAN communication connection with the DSP control module and is used for finishing direct current input, alternating current output and fault state indication of the inverter power supply.
6. The CAN-bus based on-board intelligent power management system of claim 5, wherein the boost module comprises: the boost chopper circuit is connected with an input end connected with the direct current input filter and an output end connected with the inverter circuit, the boost chopper circuit is composed of a charging circuit, a filter reactor, a chopper current transformer, a parallel diode group, a diode protection capacitor, an absorption circuit, a parallel MOSFET group and a parallel capacitor group, one end of the charging circuit is connected with a first input end of the direct current input interface, and the other end of the charging circuit is respectively connected with the filter reactor and a second input end of the direct current input interface and used for charging the boost chopper circuit; one end of the filter reactor is connected with the charging circuit, and the other end of the filter reactor is respectively connected with the chopping current transformer and the parallel diode group and used for regulating passing voltage; one end of the chopping current transformer is connected with the filter reactor, and the other end of the chopping current transformer is respectively connected with the absorption circuit and the parallel MOSFET tube group and is used for detecting the current flowing through the parallel MOSFET tube group; one end of the parallel diode group is respectively connected with the filter reactor, the chopping current transformer and the diode protection capacitor, and the other end of the parallel diode group is connected with the first output end and used for preventing reverse current; one end of the diode protection capacitor is connected with the parallel diode group, and the other end of the diode protection capacitor is connected with the first output end and used for protecting the parallel diode group, so that the diode protection capacitor plays a role in buffering when the parallel diode group is switched on and switched off in a reverse direction and prevents spike voltage breakdown; the absorption circuit is connected with the parallel MOSFET tube group in parallel, one end of the absorption circuit is connected with the chopping current transformer, and the other end of the absorption circuit is connected with the second output end and used for protecting the parallel MOSFET tube group from being broken down when the parallel MOSFET tube group is switched on and switched off; the parallel MOSFET tube group is connected with the absorption circuit in parallel, one end of the parallel MOSFET tube group is connected with the chopping current transformer, and the other end of the parallel MOSFET tube group is connected with the second output end and used for controlling the conduction and the cut-off; one end of the parallel capacitor bank is connected with the first output end, and the other end of the parallel capacitor bank is connected with the second output end and used for charging.
7. The CAN-bus based onboard intelligent power management system of claim 6, wherein the charging circuit is comprised of an air switch in parallel with a first resistor and a support capacitor in series with both.
8. The CAN-bus based on-board intelligent power management system of claim 7, wherein the air switch is composed of a dc contactor and a first diode connected in parallel.
9. The CAN-bus based onboard intelligent power management system of claim 7, wherein the support capacitor is comprised of a first capacitor and a second capacitor connected in parallel.
10. The CAN-bus based onboard intelligent power management system of claim 6, wherein the parallel diode bank is comprised of two sets of diodes connected in parallel.
11. The CAN-bus based onboard intelligent power management system of claim 6, wherein the sinking circuit is comprised of a capacitor and a diode in parallel.
12. The CAN-bus based onboard intelligent power management system of claim 6, wherein the parallel MOSFET tube bank is composed of a first MOSFET tube and a second MOSFET tube connected in parallel.
13. The CAN-bus based vehicular intelligent power management system of claim 12, wherein the gates G of the first and second MOSFET transistors are connected with a resistor and a diode in series and are connected with the source S through a resistor.
14. The CAN-bus based onboard intelligent power management system of claim 6, wherein the parallel capacitor bank consists of two capacitors in parallel.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020400351.2U CN211765363U (en) | 2020-03-26 | 2020-03-26 | Vehicle-mounted intelligent power management system based on CAN bus |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202020400351.2U CN211765363U (en) | 2020-03-26 | 2020-03-26 | Vehicle-mounted intelligent power management system based on CAN bus |
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| CN211765363U true CN211765363U (en) | 2020-10-27 |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN113561914A (en) * | 2021-07-20 | 2021-10-29 | 英博超算(南京)科技有限公司 | Car intelligence power box with fault record function |
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