CN115366713B - Vehicle-mounted charging high-voltage cabinet device capable of distributing current and application thereof - Google Patents

Vehicle-mounted charging high-voltage cabinet device capable of distributing current and application thereof Download PDF

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Publication number
CN115366713B
CN115366713B CN202211309765.4A CN202211309765A CN115366713B CN 115366713 B CN115366713 B CN 115366713B CN 202211309765 A CN202211309765 A CN 202211309765A CN 115366713 B CN115366713 B CN 115366713B
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Prior art keywords
voltage
module
vehicle
current
direct current
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CN115366713A (en
Inventor
赵芮梓
敖忠
沈正奇
沈骏
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Suzhou Asia Pacific Jingrui Transmission Technology Co ltd
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Suzhou Asia Pacific Jingrui Transmission Technology Co ltd
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60L—PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
    • B60L53/00—Methods of charging batteries, specially adapted for electric vehicles; Charging stations or on-board charging equipment therefor; Exchange of energy storage elements in electric vehicles
    • B60L53/10—Methods of charging batteries, specially adapted for electric vehicles; Charging stations or on-board charging equipment therefor; Exchange of energy storage elements in electric vehicles characterised by the energy transfer between the charging station and the vehicle
    • B60L53/14—Conductive energy transfer
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60L—PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
    • B60L3/00—Electric devices on electrically-propelled vehicles for safety purposes; Monitoring operating variables, e.g. speed, deceleration or energy consumption
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60L—PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
    • B60L58/00—Methods or circuit arrangements for monitoring or controlling batteries or fuel cells, specially adapted for electric vehicles
    • B60L58/10—Methods or circuit arrangements for monitoring or controlling batteries or fuel cells, specially adapted for electric vehicles for monitoring or controlling batteries
    • B60L58/12—Methods or circuit arrangements for monitoring or controlling batteries or fuel cells, specially adapted for electric vehicles for monitoring or controlling batteries responding to state of charge [SoC]
    • 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
    • Y02T10/70—Energy storage systems for electromobility, e.g. batteries
    • 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
    • Y02T10/7072—Electromobility specific charging systems or methods for batteries, ultracapacitors, supercapacitors or double-layer capacitors

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  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Transportation (AREA)
  • Mechanical Engineering (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Sustainable Development (AREA)
  • Sustainable Energy (AREA)
  • Charge And Discharge Circuits For Batteries Or The Like (AREA)
  • Electric Propulsion And Braking For Vehicles (AREA)

Abstract

The invention provides a vehicle-mounted charging high-voltage cabinet device capable of distributing current and application thereof, and belongs to the technical field of new energy automobiles. The direct current module converts high-voltage alternating current into high-voltage direct current and inputs the high-voltage direct current into the DC/DC module and the motor system; the acquisition module acquires the current and the temperature output by the direct current module; the DC/DC module converts the high-voltage direct current into low-voltage direct current; the control module analyzes the signals input by the acquisition module, performs function judgment according to the signals of the whole vehicle control system, and outputs control signals to the action module and the DC/DC module; the action module receives the signal of the control module and switches the current path so as to realize the function required by the signal of the whole vehicle control system. The device can realize autonomous current distribution, is integrated in a large new energy engineering vehicle, can be used for a long time, reduces the requirement of the vehicle on the fixed charging pile, improves the use efficiency, and meets the requirement of continuous operation in a certain range.

Description

Vehicle-mounted charging high-voltage cabinet device capable of distributing current and application thereof
Technical Field
The invention relates to the technical field of new energy automobiles, in particular to a vehicle-mounted charging high-voltage cabinet device capable of distributing current and application thereof.
Background
Along with the continuous increase of the carbon emission pressure, the development of new energy industry chains is continuously perfected, the technology is continuously updated in an iterative way, and the share of the market share of the pure electric vehicle is gradually improved by the advantages of environmental protection, low noise, economy, easy maintenance and the like. Not only is the pure electric scheme in the field of passenger vehicles gradually matured, but also engineering machinery vehicles begin to deeply develop from traditional fuel vehicles to pure electric or hybrid directions of oil and electricity. The defects of the new energy automobile are gradually exposed when the new energy automobile is popularized.
The charging device (charging pile) commonly adopted at present for the new energy automobile is fixed at a specified place, and the place can be a garage or a charging station with a function similar to a gas station or other manually specified places. The battery system reports a corresponding fault code to the whole vehicle when the power of the power battery of the pure electric vehicle or the plug-in hybrid electric vehicle taking the power battery as a power source is lower than a certain value, so as to prompt that the vehicle needs to be started to a designated charging place for charging the battery system. The energy and time consumed by the vehicle to and from the work site and the charging site will increase the production costs of the project.
Under the premise of considering continuous operation, the existing mainstream fixed charging pile technology has distributed positions, charging time and round-trip charging path, and becomes a brake elbow popular for pure electric or plug-in vehicles. Especially for regional working vehicles, the construction of charging infrastructure, charging time and re-input efficiency all increase the use cost of the vehicle owners and become the use bottleneck.
The prior art has the following defects:
1. when the electric quantity of the power battery of the pure electric vehicle or the plug-in hybrid electric vehicle taking the power battery as a power source is lower than a certain value, the vehicle needs to go to a fixed charging pile for charging, so that the time is wasted and the energy is consumed.
Disclosure of Invention
The invention provides a vehicle-mounted charging high-voltage cabinet device capable of distributing current, which aims to solve the technical problems in the prior art, and comprises a port connected with a mains supply, and an output port connected with a low-voltage power system, a motor system and a vehicle built-in high-voltage battery, wherein the input end of the vehicle-mounted charging high-voltage cabinet device capable of distributing current is provided with the port connected with the mains supply; comprising the following steps: the system comprises a direct current module, a DC/DC module, an acquisition module, an action module and a control module; the direct current module is connected with the DC/DC module, the DC/DC module is connected with the action module and the control module, and the action module and the acquisition module are connected with the control module; the control module is connected with the whole vehicle control system; the direct current module converts high-voltage alternating current into high-voltage direct current and inputs the high-voltage direct current into the DC/DC module and the motor system; the DC/DC module converts the high-voltage direct current into low-voltage direct current; the acquisition module acquires current and temperature data of direct current output by the direct current module; after receiving the signal of the whole vehicle control system, the control module analyzes the signal input by the acquisition module, performs function judgment according to the signal of the whole vehicle control system, and outputs a control signal to the action module and the DC/DC module; the action module receives the signal of the control module and switches the current path so as to realize the function required by the signal of the whole vehicle control system. The device can realize autonomous current distribution, is integrated in a large new energy engineering vehicle, can be used for a long time, reduces the requirement of the vehicle on the fixed charging pile, improves the use efficiency, and meets the requirement of continuous operation in a certain range.
The invention provides a vehicle-mounted charging high-voltage cabinet device capable of distributing current, wherein the input end of the vehicle-mounted charging high-voltage cabinet device capable of distributing current is provided with an interface connected with mains supply, and the output is connected with a low-voltage power supply system, a motor system and a vehicle built-in high-voltage battery;
comprising the following steps: the system comprises a direct current module, a DC/DC module, an acquisition module, an action module and a control module;
the direct current module is connected with the DC/DC module, the DC/DC module is connected with the action module and the control module, and the action module and the acquisition module are connected with the control module; the control module is connected with the whole vehicle control system;
the direct current module converts high-voltage alternating current into high-voltage direct current and inputs the high-voltage direct current into the DC/DC module and the motor system;
the acquisition module acquires current and temperature data of direct current output by the direct current module;
the DC/DC module converts the high-voltage direct current into low-voltage direct current;
after receiving the signal of the whole vehicle control system, the control module analyzes the signal input by the acquisition module, performs function judgment according to the signal of the whole vehicle control system, and outputs a control signal to the action module and the DC/DC module;
the action module receives the signal of the control module and switches the current path so as to realize the function required by the signal of the whole vehicle control system.
Preferably, the system further comprises an input interface module and an output interface module, wherein the input interface module is provided with an interface connected with the mains supply; the output interface module is connected with a low-voltage power supply system, a motor system and a vehicle built-in high-voltage battery.
Preferably, the input interface module is respectively connected with the DC/DC module, the direct current module and the control module; the output interface module is connected with the action module.
Preferably, the built-in high-voltage battery interface and the output interface module of the vehicle are in input-output bidirectional connection, and the motor system interface and the output interface module are in input-output bidirectional connection.
Preferably, the action module comprises six relays, namely a first relay, a second relay, a third relay, a fourth relay, a fifth relay and a sixth relay; switching current paths by switching on and off of the relays;
the first relay is connected with the output end of the direct current module and the input end of the DC/DC module;
the second relay is connected with the output end of the direct current module and the vehicle built-in high-voltage power Chi Jiekou;
the third relay is connected with direct current input by the DC/DC module and the vehicle built-in high-voltage power Chi Jiekou;
the fourth relay is connected with a built-in high-voltage battery interface and a motor system interface of the vehicle;
The fifth relay is connected with the fourth relay in parallel after being connected with the precharge resistor in series;
the sixth relay connects the direct current output from the direct current module with the motor system interface.
Preferably, the acquisition module comprises 2 bidirectional current sensors, namely a first current sensor and a second current sensor, respectively, and respectively acquires positive and negative current of direct current converted and output by the direct current module; and 2 temperature sensors, namely a first temperature sensor and a second temperature sensor, respectively, for collecting the temperatures of the positive electrode and the negative electrode of the direct current converted and output by the direct current module.
Preferably, the control module comprises a main control board, and the main control board performs the following operations:
outputting signals of the acquisition current sensor and the temperature sensor to an acquisition module;
outputting on-off signals of the relays to the action module;
receiving a signal of the whole vehicle control system and feeding back the signal to the whole vehicle control system;
sending a signal for controlling the starting and stopping of the direct current module to the direct current module;
and CAN communication and communication are carried out with the direct current module and the DC/DC module.
Preferably, the control module receives a signal whether the vehicle control system needs high-voltage power-on or not and feeds back a fault signal and an environment signal of the vehicle-mounted charging high-voltage cabinet device capable of distributing current to the vehicle control system.
Preferably, the control module judges the current operation condition and outputs a control signal for realizing the corresponding function according to the current operation condition.
Preferably, the operating conditions include: whether a 380V alternating-current cable is connected, whether the whole vehicle needs high-voltage power supply, whether the whole vehicle has faults, whether a built-in high-voltage battery of the vehicle is used as a power source currently, whether the built-in high-voltage battery of the vehicle needs charging, whether a motor system is in a braking state or not, and whether the low-voltage power supply needs charging or not.
Preferably, under the working condition that the 380V cable is connected, the control module outputs a control signal for the vehicle to independently work by using the commercial power.
Preferably, under the condition that the 380V cable is not connected, the control module outputs a control signal for the vehicle to independently use a high-voltage battery built in the vehicle for working.
Preferably, under the working condition that the 380V cable is connected, if the electric quantity of the built-in high-voltage battery of the vehicle is lower than a preset high-voltage lower limit threshold value, the built-in high-voltage battery of the vehicle is judged to need to be charged, and the control module outputs a control signal for charging the vehicle by using commercial power.
Preferably, when the voltage of the low-voltage power supply is lower than a preset low-voltage lower limit threshold value, the control module judges that the low-voltage power supply needs to be charged, and outputs a control signal for driving the DC/DC module to work. For example, the voltage of the low voltage is lower than 18V, other components may not work, so the voltage of the low voltage is higher than 18V, the preset low voltage threshold is higher than 18V, such as 20V, and when the voltage of the low voltage is lower than 20V, charging is performed, and the value can be defined by a customer.
Preferably, when the whole vehicle needs to be subjected to a working condition of high-voltage electricity, the control module outputs a control signal for pre-charging the motor system.
High-voltage power-on working principle:
the vehicle-mounted charging high-voltage cabinet device capable of distributing current receives a wake-up signal, and the vehicle-mounted charging high-voltage cabinet device capable of distributing current is electrified at low voltage;
the control module judges whether the six relays of the first relay to the sixth relay of the action module are all in an off state,
if the first relay is in the disconnection state, judging whether the six relays from the first relay to the sixth relay have no adhesion fault (judging through judging whether the output is in a phase failure or not, judging the current value and the like), and if the first relay has no adhesion fault, sending the states of the six relays from the first relay to the sixth relay to the whole vehicle control system;
the control module continuously judges whether the high-voltage power-on signal required by the whole vehicle control system is received, and if the high-voltage power-on signal required by the whole vehicle control system is received, the control module outputs the high-voltage power-on signal of the whole vehicle, namely high-voltage enabling;
under the condition of high voltage enabling, closing a fifth relay, supplying power to the whole vehicle by a pre-charging resistor, relieving that the whole vehicle suddenly rises to high voltage to generate large impact current, closing a fourth relay after a first time interval, connecting a motor system by a built-in high-voltage battery of the vehicle to supply power to the whole vehicle, then disconnecting the fifth relay, sending a high-voltage state, and indicating that a vehicle-mounted charging high-voltage cabinet device capable of distributing current can be ready for work;
The control module judges whether the output voltage value of the direct current module is larger than a first direct current voltage threshold value:
if the output voltage value of the direct current module is smaller than or equal to a first direct current voltage threshold value, and no commercial power is connected, a built-in high-voltage battery of the vehicle is used for supplying power to the whole vehicle;
judging whether the current residual electric quantity of the low-voltage power supply is lower than a preset low-voltage lower limit threshold value, namely whether the low-voltage power supply needs to be charged or not;
if the current residual electric quantity of the low-voltage power supply is lower than a preset low-voltage lower limit threshold value, the third relay is closed, the high-voltage direct current of the high-voltage power supply built in the vehicle is converted into the low-voltage direct current through the DC/DC module and then charges the low-voltage power supply, in the charging process, whether the current residual electric quantity of the low-voltage power supply is higher than the preset low-voltage upper limit threshold value is judged, if yes, the current residual electric quantity of the low-voltage power supply is enough, the third relay is opened, the charging of the low-voltage power supply is stopped, if no, the charging is continued until the current residual electric quantity of the low-voltage power supply is higher than the preset low-voltage upper limit threshold value, and the charging is stopped;
if the output voltage value of the direct current module is larger than the first direct current voltage threshold value, which indicates that commercial power is connected, the sixth relay is closed, the fourth relay is opened, the built-in high-voltage battery of the vehicle is disconnected, and the commercial power is converted into direct current through the direct current module to supply power to the whole vehicle;
Judging whether the current residual electric quantity of the vehicle built-in high-voltage battery is lower than a preset high-voltage lower limit threshold value or not, namely whether the vehicle built-in high-voltage battery needs to be charged or not;
if the current residual capacity of the vehicle-mounted high-voltage battery is lower than a preset high-voltage lower limit threshold value, the second relay is closed, the direct-current module is used for continuously charging the vehicle-mounted high-voltage battery, in the charging process, whether the current residual capacity of the vehicle-mounted high-voltage battery is higher than the preset high-voltage upper limit threshold value or not is judged, if yes, the fact that the electric capacity of the vehicle-mounted high-voltage battery is sufficient is indicated, the second relay is disconnected, the charging of the vehicle-mounted high-voltage battery is stopped, if no, the charging is continued until the current residual capacity of the vehicle-mounted high-voltage battery is higher than the preset high-voltage upper limit threshold value, and the charging is stopped;
judging whether the current residual electric quantity of the low-voltage power supply is lower than a preset low-voltage lower limit threshold value, namely whether the low-voltage power supply needs to be charged or not;
if the current residual electric quantity of the low-voltage power supply is lower than a preset low-voltage lower limit threshold value, the first relay is closed, the high-voltage direct current of the direct current module is converted into the low-voltage direct current through the DC/DC module, then the low-voltage power supply is charged, in the charging process, whether the current residual electric quantity of the low-voltage power supply is higher than the preset low-voltage upper limit threshold value or not is judged, if yes, the low-voltage power supply is enough, the first relay is opened, the charging of the low-voltage power supply is stopped, if no, the charging is continued until the current residual electric quantity of the low-voltage power supply is higher than the preset low-voltage upper limit threshold value, and the charging is stopped.
High-voltage electrical principle:
the vehicle-mounted charging high-voltage cabinet device capable of distributing current receives a power-down signal and judges whether the sixth relay is closed or not, namely whether the electric supply is currently used for supplying power to the whole vehicle or not:
if the sixth relay is closed, the commercial power is supplied to the whole vehicle at present, the sixth relay is disconnected, whether the sixth relay is disconnected or not is judged, and if the sixth relay is not disconnected, a power-down fault signal is fed back; if the relay is disconnected, executing second relay state judgment;
if the sixth relay is disconnected, the high-voltage battery is used for supplying power to the whole vehicle at present, the fourth relay is disconnected, whether the fourth relay is disconnected or not is judged, and if the fourth relay is not disconnected, a power-down fault signal is fed back; if the relay is disconnected, executing second relay state judgment;
and judging the state of the second relay, namely judging whether the current direct current module is charging the high-voltage battery:
if the second relay is closed, the current direct current module is used for charging the high-voltage battery, the second relay is disconnected, whether the second relay is disconnected or not is judged, if the second relay is not disconnected, a power-down fault signal is fed back, and if the second relay is disconnected, the first relay state judgment and the third relay state judgment are executed;
the state of the first relay is judged, namely whether the direct current module charges the low-voltage power supply is judged:
If the first relay is closed, the current direct current module is used for charging the low-voltage power supply, the first relay is disconnected, whether the first relay is disconnected or not is judged, if not, a power-down fault signal is fed back, and if disconnected, a high-voltage power-down completion signal is fed back;
and judging the state of the third relay, namely judging whether the high-voltage battery is charging the low-voltage power supply or not:
if the third relay is closed, the third relay is opened, whether the third relay is opened or not is judged, if not, a power-down fault signal is fed back, and if so, a high-voltage power-down completion signal is fed back.
Compared with the prior art, the invention has the following beneficial effects:
1. according to the vehicle-mounted charging high-voltage cabinet device capable of distributing current, the control module judges specific operation conditions, under different conditions, the control module collects environments through the collecting module, corresponding actions are carried out through the action module, and therefore the new energy vehicle integrated with the device can achieve autonomous current distribution.
Drawings
FIG. 1 is a schematic diagram of a prior art utility power access vehicle;
FIG. 2 is a schematic illustration of a utility access vehicle in accordance with one embodiment of the present invention;
FIG. 3 is a block diagram of a current-distributable, on-board charging high voltage cabinet device in accordance with one embodiment of the present invention;
FIG. 4 is a schematic diagram of the internal circuit connections of a vehicle-mounted rechargeable high-voltage cabinet device with current distribution according to one embodiment of the present invention, wherein the low-voltage control interface includes a low-voltage power supply interface and a vehicle control signal interface;
FIG. 5 is a schematic diagram of the high voltage power-on principle of one embodiment of the present invention;
fig. 6 is a schematic diagram of the high voltage electrical principle of an embodiment of the present invention.
In the figure, 1-first relay, 2-second relay, 3-third relay, 4-fourth relay, 5-fifth relay, 6-sixth relay, 7-pre-charge resistor, 8-first temperature sensor, 9-second temperature sensor, 10-first current sensor, 11-second current sensor.
Detailed Description
The following describes the embodiments of the present invention in detail with reference to fig. 2 to 6.
The invention provides a vehicle-mounted charging high-voltage cabinet device capable of distributing current, wherein the input end of the vehicle-mounted charging high-voltage cabinet device capable of distributing current is provided with an interface connected with mains supply, and the output is connected with a low-voltage power supply system, a motor system and a vehicle built-in high-voltage battery;
Comprising the following steps: the system comprises a direct current module, a DC/DC module, an acquisition module, an action module and a control module;
the direct current module is connected with the DC/DC module, the DC/DC module is connected with the action module and the control module, and the action module and the acquisition module are connected with the control module; the control module is connected with the whole vehicle control system;
the direct current module converts high-voltage alternating current into high-voltage direct current and inputs the high-voltage direct current into the DC/DC module and the motor system;
the acquisition module acquires current and temperature data of direct current output by the direct current module;
the DC/DC module converts the high-voltage direct current into low-voltage direct current;
after receiving the signal of the whole vehicle control system, the control module analyzes the signal input by the acquisition module, performs function judgment according to the signal of the whole vehicle control system, and outputs a control signal to the action module and the DC/DC module;
the action module receives the signal of the control module and switches the current path so as to realize the function required by the signal of the whole vehicle control system.
According to a specific embodiment of the invention, the device further comprises an input interface module and an output interface module, wherein the input interface module is provided with an interface connected with the mains supply; the output interface module is connected with a low-voltage power supply system, a motor system and a vehicle built-in high-voltage battery.
According to a specific embodiment of the invention, the input interface module is connected with the DC/DC module, the direct current module and the control module respectively; the output interface module is connected with the action module.
According to one specific embodiment of the invention, the built-in high-voltage battery interface and the output interface module of the vehicle are in input-output bidirectional connection, and the motor system interface and the output interface module are in input-output bidirectional connection.
According to a specific embodiment of the invention, the action module comprises six relays, namely a first relay 1, a second relay 2, a third relay 3, a fourth relay 4, a fifth relay 5 and a sixth relay 6; switching current paths by switching on and off of the relays;
the first relay 1 is connected with the output end of the direct current module and the input end of the DC/DC module;
the second relay 2 is connected with the output end of the direct current module and the vehicle built-in high-voltage power Chi Jiekou;
the third relay 3 connects the direct current input by the DC/DC module with the vehicle built-in high voltage power Chi Jiekou;
the fourth relay 4 is connected with a built-in high-voltage battery interface and a motor system interface of the vehicle;
the fifth relay 5 is connected in series with the precharge resistor 7 and then connected in parallel with the fourth relay;
the sixth relay 6 connects the direct current output from the direct current module with the motor system interface.
According to one embodiment of the invention, the acquisition module comprises 2 bidirectional current sensors, namely a first current sensor 10 and a second current sensor 11, respectively, for acquiring the positive and negative current of the direct current converted and output by the direct current module; and 2 temperature sensors, namely a first temperature sensor 8 and a second temperature sensor 9, respectively, for collecting the temperatures of the positive electrode and the negative electrode of the direct current converted and output by the direct current module.
According to a specific embodiment of the invention, the control module comprises a main control board, and the main control board performs the following operations:
outputting signals of the acquisition current sensor and the temperature sensor to an acquisition module;
outputting on-off signals of the relays to the action module;
receiving a signal of the whole vehicle control system and feeding back the signal to the whole vehicle control system;
sending a signal for controlling the starting and stopping of the direct current module to the direct current module;
and CAN communication and communication are carried out with the direct current module and the DC/DC module.
According to one specific embodiment of the invention, the control module receives a signal whether the vehicle control system needs high-voltage power-on or not and feeds back a fault signal and an environment signal of the vehicle-mounted charging high-voltage cabinet device capable of distributing current to the vehicle control system.
According to one specific embodiment of the invention, the control module judges the current operation condition and outputs a control signal for realizing the corresponding function according to the current operation condition.
According to one embodiment of the invention, the operating conditions include: whether a 380V alternating-current cable is connected, whether the whole vehicle needs high-voltage power supply, whether the whole vehicle has faults, whether a built-in high-voltage battery of the vehicle is used as a power source currently, whether the built-in high-voltage battery of the vehicle needs charging, whether a motor system is in a braking state or not, and whether the low-voltage power supply needs charging or not.
According to one embodiment of the invention, the control module outputs a control signal for the vehicle to operate independently using mains supply under the condition that the 380V cable is connected.
According to one specific embodiment of the invention, the control module outputs a control signal that the vehicle independently uses a built-in high-voltage battery of the vehicle to operate under the condition that the 380V cable is not connected.
According to one specific embodiment of the invention, under the working condition that the 380V cable is connected, if the electric quantity of the built-in high-voltage battery of the vehicle is lower than the preset high-voltage lower limit threshold value, the built-in high-voltage battery of the vehicle is judged to need to be charged, and the control module outputs a control signal for charging the vehicle by using the commercial power.
According to one embodiment of the invention, when the low-voltage power supply voltage is lower than a preset low-voltage lower limit threshold value, the low-voltage power supply is judged to need to be charged, and the control module outputs a control signal for driving the DC/DC module to work. For example, the voltage of the low voltage is lower than 18V, other components may not work, so the voltage of the low voltage is higher than 18V, the preset low voltage threshold is higher than 18V, such as 20V, and when the voltage of the low voltage is lower than 20V, charging is performed, and the value can be defined by a customer.
According to a specific embodiment of the invention, when the whole vehicle needs to be subjected to a working condition of high-voltage electricity, the control module outputs a control signal for pre-charging the motor system.
Example 1
The following describes the current-distributable vehicle-mounted charging high-voltage board device according to an embodiment of the present invention in detail.
The invention provides a vehicle-mounted charging high-voltage cabinet device capable of distributing current, wherein the input end of the vehicle-mounted charging high-voltage cabinet device capable of distributing current is provided with an interface connected with mains supply, and the output is connected with a low-voltage power supply system, a motor system and a vehicle built-in high-voltage battery;
comprising the following steps: the system comprises a direct current module, a DC/DC module, an acquisition module, an action module and a control module;
The direct current module is connected with the DC/DC module, the DC/DC module is connected with the action module and the control module, and the action module and the acquisition module are connected with the control module; the control module is connected with the whole vehicle control system;
the direct current module converts high-voltage alternating current into high-voltage direct current and inputs the high-voltage direct current into the DC/DC module and the motor system;
the acquisition module acquires current and temperature data of direct current output by the direct current module;
the DC/DC module converts the high-voltage direct current into low-voltage direct current;
after receiving the signal of the whole vehicle control system, the control module analyzes the signal input by the acquisition module, performs function judgment according to the signal of the whole vehicle control system, and outputs a control signal to the action module and the DC/DC module;
the action module receives the signal of the control module and switches the current path so as to realize the function required by the signal of the whole vehicle control system.
Example 2
The following describes the current-distributable vehicle-mounted charging high-voltage board device according to an embodiment of the present invention in detail.
The invention provides a vehicle-mounted charging high-voltage cabinet device capable of distributing current, wherein the input end of the vehicle-mounted charging high-voltage cabinet device capable of distributing current is provided with an interface connected with mains supply, and the output is connected with a low-voltage power supply system, a motor system and a vehicle built-in high-voltage battery;
Comprising the following steps: the system comprises a direct current module, a DC/DC module, an acquisition module, an action module and a control module; the system also comprises an input interface module and an output interface module, wherein the input interface module is provided with an interface connected with the mains supply; the output interface module is connected with the low-voltage power supply system, the motor system and the built-in high-voltage power supply of the vehicle; the vehicle built-in high-voltage battery interface is in input-output bidirectional connection with the output interface module, and the motor system interface is in input-output bidirectional connection with the output interface module;
the direct current module is connected with the DC/DC module, the DC/DC module is connected with the action module and the control module, and the action module and the acquisition module are connected with the control module; the control module is connected with the whole vehicle control system;
the input interface module is respectively connected with the DC/DC module, the direct current module and the control module; the output interface module is connected with the action module;
the direct current module converts high-voltage alternating current into high-voltage direct current and inputs the high-voltage direct current into the DC/DC module and the motor system;
the acquisition module acquires current and temperature data of direct current output by the direct current module;
the DC/DC module converts the high-voltage direct current into low-voltage direct current;
after receiving the signal of the whole vehicle control system, the control module analyzes the signal input by the acquisition module, performs function judgment according to the signal of the whole vehicle control system, and outputs a control signal to the action module and the DC/DC module;
The action module receives the signal of the control module and switches the current path so as to realize the function required by the signal of the whole vehicle control system.
Example 3
The following describes the current-distributable vehicle-mounted charging high-voltage board device according to an embodiment of the present invention in detail.
The invention provides a vehicle-mounted charging high-voltage cabinet device capable of distributing current, wherein the input end of the vehicle-mounted charging high-voltage cabinet device capable of distributing current is provided with an interface connected with mains supply, and the output is connected with a low-voltage power supply system, a motor system and a vehicle built-in high-voltage battery;
comprising the following steps: the system comprises a direct current module, a DC/DC module, an acquisition module, an action module and a control module; the system also comprises an input interface module and an output interface module, wherein the input interface module is provided with an interface connected with the mains supply; the output interface module is connected with the low-voltage power supply system, the motor system and the built-in high-voltage power supply of the vehicle; the vehicle built-in high-voltage battery interface is in input-output bidirectional connection with the output interface module, and the motor system interface is in input-output bidirectional connection with the output interface module;
the direct current module is connected with the DC/DC module, the DC/DC module is connected with the action module and the control module, and the action module and the acquisition module are connected with the control module; the control module is connected with the whole vehicle control system;
The input interface module is respectively connected with the DC/DC module, the direct current module and the control module; the output interface module is connected with the action module;
the direct current module converts high-voltage alternating current into high-voltage direct current and inputs the high-voltage direct current into the DC/DC module and the motor system;
the acquisition module acquires current and temperature data of direct current output by the direct current module; the acquisition module comprises 2 bidirectional current sensors, namely a first current sensor 10 and a second current sensor 11, and respectively acquires the positive and negative current of the direct current converted and output by the direct current module; and 2 temperature sensors, namely a first temperature sensor 8 and a second temperature sensor 9, respectively, for collecting the temperatures of the positive electrode and the negative electrode of the direct current converted and output by the direct current module;
the DC/DC module converts the high-voltage direct current into low-voltage direct current;
the action module receives the signal of the control module and switches the current path so as to realize the function required by the signal of the whole vehicle control system;
the action module comprises six relays, namely a first relay 1, a second relay 2, a third relay 3, a fourth relay 4, a fifth relay 5 and a sixth relay 6; switching current paths by switching on and off of the relays;
the first relay 1 is connected with the output end of the direct current module and the input end of the DC/DC module;
The second relay 2 is connected with the output end of the direct current module and the vehicle built-in high-voltage power Chi Jiekou;
the third relay 3 connects the direct current input by the DC/DC module with the vehicle built-in high voltage power Chi Jiekou;
the fourth relay 4 is connected with a built-in high-voltage battery interface and a motor system interface of the vehicle;
the fifth relay 5 is connected in series with the precharge resistor 7 and then connected in parallel with the fourth relay;
the sixth relay 6 connects the direct current output from the direct current module with the motor system interface.
After receiving the signal of the whole vehicle control system, the control module analyzes the signal input by the acquisition module, performs function judgment according to the signal of the whole vehicle control system, and outputs a control signal to the action module and the DC/DC module; the control module receives a signal of whether the whole vehicle control system needs high-voltage power-on or not and feeds back a fault signal and an environment signal of the vehicle-mounted charging high-voltage cabinet device capable of distributing current to the whole vehicle control system;
the control module comprises a main control board, and the main control board executes the following operations:
outputting signals of the acquisition current sensor and the temperature sensor to an acquisition module;
outputting on-off signals of the relays to the action module;
receiving a signal of the whole vehicle control system and feeding back the signal to the whole vehicle control system;
sending a signal for controlling the starting and stopping of the direct current module to the direct current module;
And CAN communication and communication are carried out with the direct current module and the DC/DC module.
The control module judges the current operation condition and outputs a control signal for realizing the corresponding function according to the current operation condition; the operation conditions include: whether a 380V alternating-current cable is connected, whether the whole vehicle needs high-voltage power supply, whether the whole vehicle has faults, whether a built-in high-voltage battery of the vehicle is used as a power source currently, whether the built-in high-voltage battery of the vehicle needs charging, whether a motor system is in a braking state or not, and whether the low-voltage power supply needs charging or not.
Under the working condition that the 380V cable is connected, the control module outputs a control signal that the vehicle independently uses the commercial power to work.
Under the working condition that the 380V cable is not connected, the control module outputs a control signal that the vehicle independently uses a high-voltage battery in the vehicle to work.
Under the working condition that the 380V cable is connected, if the electric quantity of the built-in high-voltage battery of the vehicle is lower than a preset high-voltage lower limit threshold value, judging that the built-in high-voltage battery of the vehicle needs to be charged, and outputting a control signal for charging by using commercial power by the control module.
When the voltage of the low-voltage power supply is lower than a preset low-voltage lower limit threshold value, the low-voltage power supply is judged to need to be charged, and the control module outputs a control signal for driving the DC/DC module to work. For example, the voltage of the low voltage is lower than 18V, other components may not work, so the voltage of the low voltage is higher than 18V, the preset low voltage threshold is higher than 18V, such as 20V, and when the voltage of the low voltage is lower than 20V, charging is performed, and the value can be defined by a customer.
When the whole vehicle needs to be provided with high-voltage electricity, the control module outputs a control signal for pre-charging the motor system.
Example 4
According to a specific embodiment of the invention, the high-voltage power-on working principle of the vehicle-mounted charging high-voltage cabinet device capable of distributing current is described in detail below.
The vehicle-mounted charging high-voltage cabinet device capable of distributing current receives a wake-up signal, and the vehicle-mounted charging high-voltage cabinet device capable of distributing current is electrified at low voltage;
the control module judges whether or not the six relays of the first to sixth relays 1 to 6 of the action module are all in the off state,
if the first relay 1 to the sixth relay 6 are in the disconnection state, judging whether the six relays have no adhesion faults (judging by judging whether the output is in a phase shortage or not, judging the current value and the like), and if the six relays have no adhesion faults, sending the states of the six relays 1 to the sixth relay 6 to a whole vehicle control system;
the control module continuously judges whether the high-voltage power-on signal required by the whole vehicle control system is received, and if the high-voltage power-on signal required by the whole vehicle control system is received, the control module outputs the high-voltage power-on signal of the whole vehicle, namely high-voltage enabling;
under the condition of high voltage enabling, the fifth relay 5 is closed, the precharge resistor 7 supplies power to the whole vehicle, the situation that the whole vehicle suddenly rises to high voltage to generate large impact current is relieved, after a first time interval (the first time interval is 200ms in the embodiment and can be adjusted according to requirements), the fourth relay 4 is closed, a motor system is connected with a built-in high-voltage battery of the vehicle to supply power to the whole vehicle, then the fifth relay 5 is disconnected, the upper high voltage state is sent, and the fact that the vehicle-mounted charging high-voltage cabinet device capable of distributing current can be prepared for work is indicated;
The control module determines whether the output voltage value of the direct current module is greater than a first direct current voltage threshold (the first direct current voltage threshold is 400V in this embodiment, and can be adjusted according to the requirement):
if the output voltage value of the direct current module is smaller than or equal to a first direct current voltage threshold value, and no commercial power is connected, a built-in high-voltage battery of the vehicle is used for supplying power to the whole vehicle;
judging whether the current residual electric quantity of the low-voltage power supply is lower than a preset low-voltage lower limit threshold (the preset low-voltage lower limit threshold is 20V in the embodiment and can be adjusted according to the requirement), namely whether the low-voltage power supply needs to be charged or not;
if the current residual electric quantity of the low-voltage power supply is lower than a preset low-voltage lower limit threshold value, which means that the low-voltage power supply needs to be charged, the third relay 3 is closed, the high-voltage direct current of the high-voltage power supply built in the vehicle is converted into the low-voltage direct current through the DC/DC module and then is charged for the low-voltage power supply, in the charging process, whether the current residual electric quantity of the low-voltage power supply is higher than the preset low-voltage upper limit threshold value or not is judged (the preset low-voltage upper limit threshold value is 28V in the embodiment and can be adjusted according to requirements) or not is judged, if so, the low-voltage power supply is indicated to be charged enough, the third relay 3 is opened, the charging for the low-voltage power supply is stopped, and if not, the charging is continued until the current residual electric quantity of the low-voltage power supply is higher than the preset low-voltage upper limit threshold value, and the charging is stopped;
If the output voltage value of the direct current module is larger than the first direct current voltage threshold value, and mains supply is indicated to be connected, the sixth relay 6 is closed, the fourth relay 4 is opened, the built-in high-voltage battery of the vehicle is disconnected, and the mains supply is converted into direct current through the direct current module to supply power to the whole vehicle;
judging whether the current residual electric quantity of the high-voltage battery built in the vehicle is lower than a preset high-voltage lower limit threshold (the preset high-voltage lower limit threshold is 30 percent and can be adjusted according to requirements), namely whether the high-voltage battery built in the vehicle needs to be charged or not;
if the current residual capacity of the vehicle-mounted high-voltage battery is lower than a preset high-voltage lower limit threshold value, which means that the vehicle-mounted high-voltage battery needs to be charged, the second relay 2 is closed, the direct-current module continuously charges the vehicle-mounted high-voltage battery, in the charging process, whether the current residual capacity of the vehicle-mounted high-voltage battery is higher than the preset high-voltage upper limit threshold value or not is judged (the preset high-voltage upper limit threshold value is 90 percent and can be adjusted according to the requirement) or not is judged, if so, the vehicle-mounted high-voltage battery is fully charged, the second relay 2 is opened, the charging of the vehicle-mounted high-voltage battery is stopped, if not, the charging is continued until the current residual capacity of the vehicle-mounted high-voltage battery is higher than the preset high-voltage upper limit threshold value, and the charging is stopped;
Judging whether the current residual electric quantity of the low-voltage power supply is lower than a preset low-voltage limit threshold (the preset low-voltage limit threshold is 20V in the embodiment and can be adjusted according to the requirement), namely whether the low-voltage power supply needs to be charged or not;
if the current residual electric quantity of the low-voltage power supply is lower than a preset low-voltage lower limit threshold value, which indicates that the low-voltage power supply needs to be charged, the first relay is closed, the high-voltage direct current of the direct current module is converted into the low-voltage direct current through the DC/DC module, then the low-voltage power supply is charged, in the charging process, whether the current residual electric quantity of the low-voltage power supply is higher than the preset low-voltage upper limit threshold value or not is judged (the preset low-voltage upper limit threshold value is 28V in the embodiment and can be adjusted according to requirements), if so, the low-voltage power supply is indicated to be charged, the first relay is opened, the charging of the low-voltage power supply is stopped, and if not, the charging is continued until the current residual electric quantity of the low-voltage power supply is higher than the preset low-voltage upper limit threshold value, and the charging is stopped.
Example 5
According to a specific embodiment of the invention, the high-voltage power-down working principle of the vehicle-mounted charging high-voltage cabinet device capable of distributing current is described in detail below.
The vehicle-mounted charging high-voltage cabinet device capable of distributing current receives the power-down signal and judges whether the sixth relay 6 is closed or not, namely whether the electric supply is currently used for supplying power to the whole vehicle or not:
If the sixth relay 6 is closed, the commercial power is supplied to the whole vehicle at present, the sixth relay 6 is disconnected, whether the sixth relay 6 is disconnected or not is judged, and if not, a power-down fault signal is fed back; if the relay is disconnected, the state judgment of the second relay 2 is executed;
if the sixth relay 6 is disconnected, the high-voltage battery is used for supplying power to the whole vehicle at present, the fourth relay 4 is disconnected, whether the fourth relay 4 is disconnected or not is judged, and if not, a power-down fault signal is fed back; if the relay is disconnected, the state judgment of the second relay 2 is executed;
and judging the state of the second relay 2, namely judging whether the current direct current module is charging a high-voltage battery:
if the second relay 2 is closed, the current direct current module is used for charging the high-voltage battery, the second relay 2 is disconnected, whether the second relay 2 is disconnected or not is judged, if not, a power-down fault signal is fed back, and if the second relay 2 is disconnected, the state judgment of the first relay 1 and the state judgment of the third relay are executed;
the state of the first relay 1 is judged, namely whether the direct current module is charging the low-voltage power supply is judged:
if the first relay 1 is closed, the current direct current module is used for charging the low-voltage power supply, the first relay 1 is disconnected, whether the first relay 1 is disconnected or not is judged, if not, a power-down fault signal is fed back, and if disconnected, a high-voltage power-down completion signal is fed back;
And 3, judging the state of the third relay 3, namely judging whether the high-voltage battery is charging the low-voltage power supply or not:
if the third relay 3 is closed, the current high-voltage battery is charged for the low-voltage power supply, the third relay 3 is opened, whether the third relay 3 is opened or not is judged, if not, a power-down fault signal is fed back, and if so, a high-voltage power-down completion signal is fed back.
The above description is only of the preferred embodiments of the present invention and is not intended to limit the present invention, but various modifications and variations can be made to the present invention by those skilled in the art. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention are included in the protection scope of the present invention.

Claims (5)

1. The vehicle-mounted charging high-voltage cabinet device capable of distributing current is characterized in that an input end of the vehicle-mounted charging high-voltage cabinet device capable of distributing current is provided with an interface connected with a mains supply, and an output is connected with a low-voltage power supply system, a motor system and a vehicle built-in high-voltage battery;
comprising the following steps: the system comprises a direct current module, a DC/DC module, an acquisition module, an action module and a control module; the system also comprises an input interface module and an output interface module, wherein the input interface module is provided with an interface connected with the mains supply; the output interface module is connected with the low-voltage power supply system, the motor system and the built-in high-voltage power supply of the vehicle; the input interface module is respectively connected with the DC/DC module, the direct current module and the control module; the output interface module is connected with the action module; the vehicle built-in high-voltage battery interface is in input-output bidirectional connection with the output interface module, and the motor system interface is in input-output bidirectional connection with the output interface module;
The direct current module is connected with the DC/DC module, the DC/DC module is connected with the action module and the control module, and the action module and the acquisition module are connected with the control module; the control module is connected with the whole vehicle control system;
the direct current module converts high-voltage alternating current into high-voltage direct current and inputs the high-voltage direct current into the DC/DC module and the motor system;
the acquisition module acquires current and temperature data of direct current output by the direct current module; the acquisition module comprises 2 bidirectional current sensors, namely a first current sensor and a second current sensor, and respectively acquires the positive and negative current of the direct current converted and output by the direct current module; and 2 temperature sensors, namely a first temperature sensor and a second temperature sensor, respectively, for collecting the temperatures of the positive electrode and the negative electrode of the direct current converted and output by the direct current module;
the DC/DC module converts the high-voltage direct current into low-voltage direct current;
after receiving the signal of the whole vehicle control system, the control module analyzes the signal input by the acquisition module, judges the current operation condition according to the signal of the whole vehicle control system, and outputs a control signal for realizing the corresponding function to the action module and the DC/DC module according to the current operation condition; the control module comprises a main control board, and the main control board executes the following operations:
Outputting signals of the acquisition current sensor and the temperature sensor to an acquisition module;
outputting on-off signals of the relays to the action module;
receiving a signal of the whole vehicle control system and feeding back the signal to the whole vehicle control system;
sending a signal for controlling the starting and stopping of the direct current module to the direct current module;
CAN communication and communication are carried out between the DC module and the DC/DC module;
the action module receives the signal of the control module and switches the current path so as to realize the function required by the signal of the whole vehicle control system;
the control module receives a signal of whether the whole vehicle control system needs high-voltage power-on or not and feeds back a fault signal and an environment signal of the vehicle-mounted charging high-voltage cabinet device capable of distributing current to the whole vehicle control system; the operation conditions include: whether a 380V alternating-current cable is connected, whether the whole vehicle needs high-voltage power supply, whether the whole vehicle has faults, whether a built-in high-voltage battery of the vehicle is used as a power source at present, whether the built-in high-voltage battery of the vehicle needs charging, whether a motor system is in a braking state or not, and whether the low-voltage battery needs charging or not;
the action module comprises six relays, namely a first relay, a second relay, a third relay, a fourth relay, a fifth relay and a sixth relay; switching current paths by switching on and off of the relays; the first relay is connected with the output end of the direct current module and the input end of the DC/DC module;
The second relay is connected with the output end of the direct current module and the vehicle built-in high-voltage power Chi Jiekou;
the third relay is connected with direct current input by the DC/DC module and the vehicle built-in high-voltage power Chi Jiekou;
the fourth relay is connected with a built-in high-voltage battery interface and a motor system interface of the vehicle;
the fifth relay is connected with the fourth relay in parallel after being connected with the precharge resistor in series;
the sixth relay is connected with the direct current output from the direct current module and the motor system interface;
the high-voltage power-on process of the vehicle-mounted charging high-voltage cabinet device capable of distributing current and the working process under the condition of high-voltage enabling are as follows:
the vehicle-mounted charging high-voltage cabinet device capable of distributing current receives a wake-up signal, and the vehicle-mounted charging high-voltage cabinet device capable of distributing current is electrified at low voltage;
the control module judges whether the six relays of the first relay to the sixth relay of the action module are all in an off state,
if the first relay is in the disconnection state, judging whether the six relays from the first relay to the sixth relay have no adhesion fault, and if the six relays have no adhesion fault, sending the states of the six relays from the first relay to the sixth relay to the whole vehicle control system;
the control module continuously judges whether the high-voltage power-on signal required by the whole vehicle control system is received, and if the high-voltage power-on signal required by the whole vehicle control system is received, the control module outputs the high-voltage power-on signal of the whole vehicle;
Under the condition of high voltage enabling, closing a fifth relay, supplying power to the whole vehicle by a pre-charging resistor, closing a fourth relay after a first time interval, supplying power to the whole vehicle by a motor system connected with a built-in high-voltage battery of the vehicle, then opening the fifth relay, and sending an upper high-voltage state;
the control module judges whether the output voltage value of the direct current module is larger than a first direct current voltage threshold value:
if the output voltage value of the direct current module is smaller than or equal to a first direct current voltage threshold value, a high-voltage battery built in the vehicle is used for supplying power to the whole vehicle;
judging whether the current residual electric quantity of the low-voltage power supply is lower than a preset low-voltage lower limit threshold value or not;
if the current residual electric quantity of the low-voltage power supply is lower than a preset low-voltage lower limit threshold value, closing a third relay, converting high-voltage direct current of a high-voltage battery in the vehicle into low-voltage direct current through a DC/DC module, and then charging the low-voltage power supply, wherein in the charging process, whether the current residual electric quantity of the low-voltage power supply is higher than the preset low-voltage upper limit threshold value is judged, if yes, the third relay is disconnected, the charging of the low-voltage power supply is stopped, if no, the charging is continued until the current residual electric quantity of the low-voltage power supply is higher than the preset low-voltage upper limit threshold value, and the charging is stopped;
if the output voltage value of the direct current module is larger than the first direct current voltage threshold value, closing the sixth relay, opening the fourth relay, opening the built-in high-voltage battery of the vehicle, and converting the commercial power into direct current through the direct current module to supply power for the whole vehicle;
Judging whether the current residual electric quantity of the high-voltage battery built in the vehicle is lower than a preset high-voltage lower limit threshold value or not;
if the current residual capacity of the vehicle-mounted high-voltage battery is lower than a preset high-voltage lower limit threshold, closing a second relay, continuously charging the vehicle-mounted high-voltage battery by a direct-current module, judging whether the current residual capacity of the vehicle-mounted high-voltage battery is higher than a preset high-voltage upper limit threshold or not in the charging process, if so, disconnecting the second relay, stopping charging the vehicle-mounted high-voltage battery, if not, continuing to charge until the current residual capacity of the vehicle-mounted high-voltage battery is higher than the preset high-voltage upper limit threshold, and stopping charging;
judging whether the current residual electric quantity of the low-voltage power supply is lower than a preset low-voltage lower limit threshold value or not;
if the current residual electric quantity of the low-voltage power supply is lower than a preset low-voltage lower limit threshold value, the first relay is closed, the high-voltage direct current of the direct current module is converted into the low-voltage direct current through the DC/DC module, then the low-voltage power supply is charged, in the charging process, whether the current residual electric quantity of the low-voltage power supply is higher than the preset low-voltage upper limit threshold value is judged, if yes, the first relay is disconnected, the charging of the low-voltage power supply is stopped, if no, the charging is continued until the current residual electric quantity of the low-voltage power supply is higher than the preset low-voltage upper limit threshold value, and the charging is stopped.
2. The electric current distributable vehicular charging high-voltage cabinet device of claim 1, wherein the control module outputs a control signal for the vehicle to operate independently using utility power under the condition that the 380V cable is on.
3. The electric current distributable vehicular charging high-voltage cabinet device according to claim 1, wherein the control module outputs a control signal that the vehicle independently uses a vehicle built-in high-voltage battery to operate under a condition that the 380V cable is not connected.
4. The vehicle-mounted charging high-voltage cabinet device capable of distributing current according to claim 1, wherein the control module outputs a control signal for charging by using commercial power to the vehicle if the electric quantity of the built-in high-voltage battery of the vehicle is lower than a preset high-voltage lower limit threshold value under the working condition of 380V cable connection.
5. The vehicle-mounted charging high-voltage cabinet device capable of distributing current according to claim 1, wherein the control module outputs a control signal for pre-charging the motor system when the whole vehicle needs a working condition of high-voltage power supply.
CN202211309765.4A 2022-10-25 2022-10-25 Vehicle-mounted charging high-voltage cabinet device capable of distributing current and application thereof Active CN115366713B (en)

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Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102689601A (en) * 2012-06-11 2012-09-26 浙江海康集团有限公司 Integrated control system for new energy vehicles
CN204095557U (en) * 2014-09-09 2015-01-14 北汽福田汽车股份有限公司 Charging electric vehicle fender guard, charging device of electric automobile and electronlmobil
CN107492693A (en) * 2016-12-12 2017-12-19 宝沃汽车（中国）有限公司 Electrokinetic cell bag, vehicle and charging method
CN108973712A (en) * 2017-05-30 2018-12-11 本田技研工业株式会社 Vehicle

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102689601A (en) * 2012-06-11 2012-09-26 浙江海康集团有限公司 Integrated control system for new energy vehicles
CN204095557U (en) * 2014-09-09 2015-01-14 北汽福田汽车股份有限公司 Charging electric vehicle fender guard, charging device of electric automobile and electronlmobil
CN107492693A (en) * 2016-12-12 2017-12-19 宝沃汽车（中国）有限公司 Electrokinetic cell bag, vehicle and charging method
CN108973712A (en) * 2017-05-30 2018-12-11 本田技研工业株式会社 Vehicle

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