CN112838662A - Integrated power control device, system and method and vehicle - Google Patents
Integrated power control device, system and method and vehicle Download PDFInfo
- Publication number
- CN112838662A CN112838662A CN202011568446.6A CN202011568446A CN112838662A CN 112838662 A CN112838662 A CN 112838662A CN 202011568446 A CN202011568446 A CN 202011568446A CN 112838662 A CN112838662 A CN 112838662A
- Authority
- CN
- China
- Prior art keywords
- voltage
- power control
- low
- integrated power
- conversion unit
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 238000000034 method Methods 0.000 title claims abstract description 20
- 238000006243 chemical reaction Methods 0.000 claims abstract description 74
- 238000001514 detection method Methods 0.000 claims abstract description 23
- 230000005611 electricity Effects 0.000 description 17
- 230000002159 abnormal effect Effects 0.000 description 12
- 238000012544 monitoring process Methods 0.000 description 7
- 238000013461 design Methods 0.000 description 6
- HEZMWWAKWCSUCB-PHDIDXHHSA-N (3R,4R)-3,4-dihydroxycyclohexa-1,5-diene-1-carboxylic acid Chemical compound O[C@@H]1C=CC(C(O)=O)=C[C@H]1O HEZMWWAKWCSUCB-PHDIDXHHSA-N 0.000 description 5
- 230000003993 interaction Effects 0.000 description 4
- 230000005540 biological transmission Effects 0.000 description 3
- 230000009467 reduction Effects 0.000 description 3
- 238000010586 diagram Methods 0.000 description 2
- 238000012423 maintenance Methods 0.000 description 2
- 238000007726 management method Methods 0.000 description 2
- 230000004044 response Effects 0.000 description 2
- 230000002618 waking effect Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000008901 benefit Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000008034 disappearance Effects 0.000 description 1
- 230000008030 elimination Effects 0.000 description 1
- 238000003379 elimination reaction Methods 0.000 description 1
- 238000005265 energy consumption Methods 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 238000013024 troubleshooting Methods 0.000 description 1
Images
Classifications
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J9/00—Circuit arrangements for emergency or stand-by power supply, e.g. for emergency lighting
- H02J9/04—Circuit arrangements for emergency or stand-by power supply, e.g. for emergency lighting in which the distribution system is disconnected from the normal source and connected to a standby source
- H02J9/06—Circuit arrangements for emergency or stand-by power supply, e.g. for emergency lighting in which the distribution system is disconnected from the normal source and connected to a standby source with automatic change-over, e.g. UPS systems
- H02J9/061—Circuit arrangements for emergency or stand-by power supply, e.g. for emergency lighting in which the distribution system is disconnected from the normal source and connected to a standby source with automatic change-over, e.g. UPS systems for DC powered loads
-
- 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
- B60L1/00—Supplying electric power to auxiliary equipment of vehicles
-
- 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
- B60L3/0023—Detecting, eliminating, remedying or compensating for drive train abnormalities, e.g. failures within the drive train
-
- 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
- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
- Y02B70/00—Technologies for an efficient end-user side electric power management and consumption
- Y02B70/30—Systems integrating technologies related to power network operation and communication or information technologies for improving the carbon footprint of the management of residential or tertiary loads, i.e. smart grids as climate change mitigation technology in the buildings sector, including also the last stages of power distribution and the control, monitoring or operating management systems at local level
-
- 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
- Y04—INFORMATION OR COMMUNICATION TECHNOLOGIES HAVING AN IMPACT ON OTHER TECHNOLOGY AREAS
- Y04S—SYSTEMS INTEGRATING TECHNOLOGIES RELATED TO POWER NETWORK OPERATION, COMMUNICATION OR INFORMATION TECHNOLOGIES FOR IMPROVING THE ELECTRICAL POWER GENERATION, TRANSMISSION, DISTRIBUTION, MANAGEMENT OR USAGE, i.e. SMART GRIDS
- Y04S20/00—Management or operation of end-user stationary applications or the last stages of power distribution; Controlling, monitoring or operating thereof
- Y04S20/20—End-user application control systems
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Transportation (AREA)
- Mechanical Engineering (AREA)
- Business, Economics & Management (AREA)
- Emergency Management (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 technical scheme discloses an integrated power control device, a system, a method and a vehicle, wherein the integrated power control device comprises a first conversion unit, a second conversion unit and a control unit, wherein the first conversion unit is used for converting high voltage input through a high-voltage loop into low voltage and outputting the low voltage to a low-voltage loop; the detection unit is used for continuously detecting the working voltage and outputting a switching signal when the working voltage disappears; the second conversion unit is used for converting the high voltage into working voltage according to the switching signal and outputting the working voltage to the low-voltage loop. Through the technical scheme, the working voltage supply condition of the low-voltage loop to each power conversion unit can be continuously detected, when the working voltage disappears, the standby power conversion units are switched, the power is taken from the high voltage, the working voltage with the default value is output, and the working voltage is supplied to each power conversion unit through the low-voltage network, so that the normal operation of the vehicle-mounted low-voltage network is effectively protected, the system robustness is greatly improved, and the popularization value is realized.
Description
Technical Field
The invention relates to the technical field of power control systems, in particular to an integrated power control device, system and method and a vehicle.
Background
The source of the low-voltage network power supply of the new energy automobile is a voltage-reducing direct current power supply (DCDC). In order to simplify the system design, a step-down direct current Power supply (DCDC), an On-Board Charger (OBC) and a Power Distribution Unit (PDU) are generally Integrated into a component, i.e., an Integrated Power Electronics Unit (IPEU). The integrated power electronic module comprises a low-voltage terminal (LV Connector) connected with a vehicle-mounted low-voltage storage battery and is used for providing low-voltage power for operation for the integrated power electronic module IPEU.
When a connection KL30 between the vehicle-mounted low-voltage storage battery and the integrated power electronic module IPEU is broken, the low-voltage storage battery cannot provide working low-voltage electricity for the integrated power electronic module IPEU, a voltage reduction direct current power supply DCDC in the integrated power electronic module IPEU cannot provide low-voltage electricity for the low-voltage storage battery, and at the moment, a low-voltage network of the whole vehicle is completely supplied with electricity by the vehicle-mounted low-voltage storage battery directly, if the state is maintained for too long, the low-voltage storage battery is easy to lose electricity; meanwhile, if a high-power requirement occurs to a load in a low-voltage network in this state, the low-voltage storage battery may not meet the requirement and further cause abnormal work of parts, thereby causing great hidden danger to the robustness of the whole vehicle power system. Therefore, an integrated power control system is needed to solve the above technical problems.
Disclosure of Invention
In view of the above problems in the prior art, an integrated power control apparatus, system, method and vehicle are provided, and the specific technical solution is as follows:
an integrated power control device, comprising:
the first conversion unit is used for converting a high voltage input through a high-voltage loop into a low voltage and outputting the low voltage to a low-voltage loop, and the low-voltage loop is also connected with the first conversion unit and used for providing working voltage for the first conversion unit;
the detection unit is used for continuously detecting the working voltage and outputting a switching signal when the working voltage disappears;
and the second conversion unit is respectively connected with the detection unit and the high-voltage loop and used for converting the high voltage into the working voltage and outputting the working voltage to the low-voltage loop according to the switching signal.
Preferably, the integrated power control device further includes a third converting unit, configured to convert an external ac current into a high voltage and output the high voltage to the high voltage circuit;
the first conversion unit and the second conversion unit are respectively connected to the high-voltage loop through the output end of the third conversion unit.
Preferably, the integrated power control device further includes a first input port, and the first input port is connected to the external ac current and the third conversion unit, respectively.
Preferably, the integrated power control device further includes a second input port, and the second input port is respectively connected to the low-voltage network, the working voltage input terminal of the first conversion unit, the output terminal of the second conversion unit, and the working voltage input terminal of the third conversion unit.
Preferably, the integrated power control device further includes a high voltage interface, and the high voltage interface is connected to the high voltage loop and a battery pack.
Preferably, the integrated power control device further includes a low-voltage output port, and the low-voltage output port is respectively connected to the output end of the second conversion unit and the low-voltage circuit.
Preferably, the integrated power control device, wherein the second switching unit is in a sleep state when the switching signal is not received.
Preferably, the integrated power control device, wherein when the detection unit detects that the operating voltage is received, a sleep signal is output and transmitted to the second conversion unit.
Preferably, the integrated power control device includes a feedback unit connected to the second converting unit;
when the second conversion unit receives the switching signal, the second conversion unit continuously transmits the real-time working condition information back to the feedback unit.
Preferably, the integrated power control device, wherein the real-time operating condition information includes a real-time operating state, a fault level, a fault code, an input voltage, an input current, an output voltage, and an output current of the second converting unit.
Preferably, the integrated power control device, wherein, when the operating voltage disappears, the detection unit further generates a fault alarm and outputs the fault alarm to an external control terminal.
Preferably, in the integrated power control device, the operating voltage is 9V to 16V.
Preferably, the integrated power control device, wherein the detection unit is integrated with the first conversion unit.
Preferably, the integrated power control device, wherein the feedback unit is integrated with the first conversion unit.
A vehicle-mounted integrated power control system comprises the integrated power control device;
the on-vehicle integrated power control system further includes:
the low-voltage storage battery is connected with the low-voltage loop in parallel and used for providing the working voltage for the low-voltage loop;
the low-voltage loop is also used for charging the low-voltage storage battery.
A vehicle comprises the integrated power control device.
A vehicle comprises the vehicle-mounted integrated power control system.
An integrated power control method applied to the integrated power control device includes:
step S1, continuously detecting the working voltage and outputting a switching signal when the working voltage disappears;
step S2, converting the high voltage into the working voltage according to the switching signal, and outputting the working voltage to the low voltage loop.
This technical scheme has following advantage or beneficial effect:
through the technical scheme, the working voltage supply condition of the low-voltage loop to each power conversion unit can be continuously detected, when the working voltage disappears, the standby power conversion units are switched, the power is taken from the high voltage, the working voltage with the default value is output, and the working voltage is supplied to each power conversion unit through the low-voltage network, so that the normal operation of the vehicle-mounted low-voltage network is effectively protected, the system robustness is greatly reduced, and the popularization value is realized.
Drawings
FIG. 1 is a schematic diagram of an integrated power control apparatus, system, method and vehicle according to the present invention;
fig. 2 is a schematic structural diagram of an integrated power control system in an integrated power control apparatus, system, method and vehicle according to the present invention.
Fig. 3 is a flowchart illustrating an integrated power control method in an integrated power control apparatus, system, method and vehicle according to the present invention.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
It should be noted that the embodiments and features of the embodiments may be combined with each other without conflict.
The invention is further described with reference to the following drawings and specific examples, which are not intended to be limiting.
In view of the above problems in the prior art, an integrated power control apparatus, system, method and vehicle are provided, and the specific technical solution is as follows:
an integrated power control device, as shown in fig. 1, comprising:
the first conversion unit 1 is used for converting a high voltage input through a high-voltage loop into a low voltage and outputting the low voltage to a low-voltage loop, and the low-voltage loop is also connected with the first conversion unit 1 and used for providing working voltage for the first conversion unit 1;
the detection unit 2 is used for continuously detecting the working voltage and outputting a switching signal when the working voltage disappears;
and the second conversion unit 3 is respectively connected with the detection unit 2 and the high-voltage loop and used for converting the high voltage into the working voltage according to the switching signal and outputting the working voltage to the low-voltage loop.
In a preferred embodiment of the present invention, the integrated power control device is designed based on the redundant power supply concept, when the low-voltage circuit cannot perform normal supply of operating voltage due to the influence of fault factors, the normal operation of the first converting unit 1 is affected, and the low-voltage circuit cannot be maintained according to the predetermined requirement, which causes operation problems of some parts and devices inside the system that operates using the low-voltage circuit. In this state, the solution is solved by the cooperation of the second conversion unit 2 and the detection unit 3: the detection unit 3 continuously detects the supply condition of the working voltage, and when the disappearance of the working voltage is detected, a switching signal is generated to inform the second conversion unit 2 to take over the supply of the working voltage; the second conversion unit 2 directly takes electricity from the high-voltage loop, converts high-voltage electricity into working voltage for the first conversion unit 1 to use, and guarantees continuous and stable output of low-voltage electricity in the low-voltage loop, so that normal work of various low-voltage devices is guaranteed.
In the above preferred embodiment, the detection unit 3 implements fast wake-up of the second conversion unit 2 by hard-line transmission of an independent switching signal, which is identified by, for example, isWkUp (or other identification methods, which are not limited herein), so as to implement fast redundant power supply switching response when an abnormal condition occurs, thereby ensuring the overall working stability of the integrated power control device.
As a preferred embodiment, as also shown in fig. 1, the integrated power control device further includes a third converting unit 4 for converting an external ac current into a high voltage and outputting the high voltage to the high voltage circuit;
the first conversion unit 1 and the second conversion unit 2 are respectively connected to a high-voltage loop through the output end of the third conversion unit 4.
In a preferred embodiment, the integrated power control device further includes a first input port 01, and the first input port 01 is connected to an external ac current and the third converting unit 4, respectively.
Specifically, when the integrated power control device is connected to an external ac power, for example, to an external charging pile or a travel charging gun, the third conversion unit 4 is responsible for converting the input ac power into a high voltage HV and inputting the high voltage HV into the high voltage circuit. At this time, the first converting unit 1 and the second converting unit 2 are respectively connected to the output end of the third converting unit 4, and are connected to the high voltage loop through the output end of the third converting unit 4. In a preferred embodiment, the integrated power control device further includes a second input port 02, the second input port 02 is connected to the low voltage network, the operating voltage input terminal of the first converting unit 1, the operating voltage input terminal of the third converting unit 4, and the output terminal of the second converting unit 2, respectively, and the external low voltage network inputs the low voltage through the second input port 02 and provides the low voltage required for the operation of the first converting unit 1 and the third converting unit 4.
As a preferred embodiment, the integrated power control device further includes a high voltage interface 03, and the high voltage interface 03 is connected to the high voltage circuit and a battery pack. Specifically, the high-voltage interface 03 is further connected to the third conversion unit 4, and the working principle thereof is as follows:
after the first input port 01 is connected to external ac power, for example, a charging pile or a travel charging gun, the third converting unit 4 converts the ac power into a high voltage and inputs the high voltage into the high voltage loop, and charges the battery pack through the high voltage loop and the high voltage interface 03. Meanwhile, the first conversion unit 1 and the second conversion unit 2 are connected to a high-voltage loop through the output end of the third conversion unit 4, and convert the high voltage of the high-voltage loop into a low voltage to be input into a low-voltage loop, so as to provide the low voltage to equipment needing the low voltage as a working voltage.
When the first input port 01 is not connected with ac power, the third converting unit 4 does not operate, and at this time, the high voltage in the high voltage circuit is generated by the battery pack and is input to the high voltage circuit through the high voltage interface 03. The first and second conversion units 1 and 2 receive a high voltage directly through a high voltage circuit, and the first conversion unit converts the high voltage into a low voltage and inputs the low voltage into a low voltage circuit to be provided to a device requiring the low voltage as an operating voltage.
In a preferred embodiment, the integrated power control device further includes a low voltage output port 04, and the low voltage output port 04 is connected to the output terminal of the first converting unit 1 and the low voltage circuit, respectively.
As a preferred embodiment, the integrated power control apparatus of the type in which the second switching unit 2 is in the sleep state when the switching signal is not accepted.
In another preferred embodiment of the present invention, since the second converting unit 2 is configured to provide redundant power supply when the operating voltage is not detected, when the switching signal is not received, it means that the first converting unit 1 and the third converting unit 4 are in the normal operating state, and the second converting unit 2 has no operating requirement, and is suitable to be in the sleep state to save energy consumption.
In a preferred embodiment, the integrated power control device outputs a sleep signal to the second converting unit 2 when the detecting unit 3 detects that the operating voltage is received.
In another preferred embodiment of the present invention, the detection unit 3 detects whether the operating voltage exists continuously; when the abnormal state is recovered to normal after the intervention of the external maintenance factor and the working voltage can be detected again, the second conversion unit 2 can return to the sleep state without working again, and at the moment, the detection unit 3 sends a sleep signal to control the second conversion unit to return to the sleep state to wait for waking up next time.
In a preferred embodiment, the integrated power control device comprises a feedback unit 5 connected to the second converting unit 2;
when the second converting unit 2 receives the switching signal, the second converting unit 2 continuously transmits the real-time working condition information back to the feedback unit 5.
In a preferred embodiment, the integrated power control device, wherein the real-time operating condition information includes a real-time operating status, a fault level, a fault code, an input voltage, an input current, an output voltage, and an output current of the second converting unit.
In another preferred embodiment of the present invention, after the second converting unit 2 is converted from the sleep state to the working state, the real-time working condition information of the second converting unit 2 needs to be transmitted back to the feedback unit 5 and the feedback unit 5 performs necessary monitoring on the real-time working condition, where the real-time working condition information includes, but is not limited to, the real-time working state of the second converting unit 2, and normal working information such as the fault level, the fault code, the input voltage current, and the output voltage current.
In the above preferred embodiment, the feedback unit 5 will report the screened partial real-time operating condition status information according to the actual requirement of the user after summarizing the real-time operating status information returned by the second converting unit 2, so as to meet the actual application requirements of the user on monitoring the switching operating condition in real time, and eliminating the fault in time.
In the above preferred embodiment, the feedback unit 5 and the second conversion unit 2 are connected by a CAN bus, so as to realize high-speed and stable transmission of real-time operating condition information.
In a preferred embodiment, the integrated power control device, wherein the detection unit 3 further generates a fault alarm and outputs the fault alarm to an external control terminal when the operating voltage is removed.
In another preferred embodiment of the present invention, when in an abnormal state where the operating voltage cannot be detected, although the normal operating voltage supply of the third converting unit 4 and the first converting unit 1 can be realized by waking up the second converting unit 2, the fault condition still needs to be repaired and removed accordingly; the detecting unit 3 needs to feed back the fault information to the user for timely elimination while performing the detection and switching signal output operations.
In the above preferred embodiment, the generation and notification of the fault alarm may be to generate a fault code and transmit the fault code to an external user interaction terminal, or to perform corresponding report back through a CAN bus of the power management, and the specific notification manner may be adaptively modified according to the actual needs of the user, which is not limited herein.
In a preferred embodiment, the integrated power control device has a voltage range of the operating voltage of 9V to 16V, and the default value of the output voltage of the second conversion unit 2 is 13.5V.
As a preferred embodiment, the integrated power control device is of the type in which the detection unit 3 is integrated in the first conversion unit 1.
As a preferred embodiment, the integrated power control device is of the kind wherein the feedback unit 3 is also integrated in the first conversion unit 1.
In another preferred embodiment of the present invention, according to the configuration requirement of the user, the detecting unit 3 and the feedback unit 5 can be integrated into the first converting unit 1, and the first converting unit 1 performs the working voltage detection and the real-time working condition information feedback of the second converting unit 2; this design requires specific setup based on certain application specific scenarios, as will be explained in detail later.
An on-vehicle integrated power control system comprising any one of the integrated power control devices described above;
the on-vehicle integrated power control system further includes:
the low-voltage storage battery is connected with the low-voltage loop in parallel and used for providing working voltage for the low-voltage loop;
the low-voltage loop is also used for charging the low-voltage storage battery.
The alternating current in the above-mentioned on-vehicle integrated power control system is provided by equipment such as outside electric pile or the rifle of charging of filling, and it is no longer repeated here.
A specific embodiment is now provided to further explain and explain the present technical solution:
in the existing low-voltage network Power supply design of new energy vehicles, in order to simplify the system design, a voltage-reduced direct current Power supply (DCDC), an On-Board Charger (OBC) and a Power Distribution Unit (PDU) are generally Integrated into a component, i.e., an Integrated Power Electronics Unit (IPEU). The integrated power electronic module comprises a low-voltage terminal (LV Connector) connected with a vehicle-mounted low-voltage storage battery and is used for providing low-voltage power for operation for the integrated power electronic IPEU.
Such existing design has certain defect hidden danger: when a connection KL30 between the vehicle-mounted low-voltage storage battery and the integrated power electronic module IPEU is broken, the low-voltage storage battery cannot provide working low-voltage electricity for the integrated power electronic module IPEU, a voltage reduction direct current power supply DCDC in the integrated power electronic module IPEU cannot provide low-voltage electricity for the low-voltage storage battery, and at the moment, a low-voltage network of the whole vehicle is completely supplied with electricity by the vehicle-mounted low-voltage storage battery directly, if the state is maintained for too long, the low-voltage storage battery is easy to lose electricity; meanwhile, if a high-power requirement occurs to a load in a low-voltage network in this state, the low-voltage storage battery may not meet the requirement in a related manner, so that the work of parts is abnormal, and great hidden danger is caused to the robustness of the whole vehicle power system.
Based on the practical application problem, the embodiment provides an integrated power control system, and an effective solution is provided for the problem by adopting a design idea of redundant power supply:
in this embodiment, as shown in fig. 2, the third conversion unit is a vehicle-mounted charger 10; the first conversion unit is a main step-down power supply 11; the second conversion unit is an auxiliary voltage reduction power supply 12; the first input port is an alternating current input port 13 and is connected with an external alternating current charging pile or a travel charging gun; the second input port is a low-voltage input port 14 connected with a low-voltage network of the whole vehicle; the high-voltage interface 15 and the low-voltage output port 16 are respectively connected with corresponding components of a whole vehicle power system.
In this embodiment, the main buck power supply 11 integrates more functional components, and integrates the related functions of the detection unit and the feedback unit.
In the above specific embodiment, the main voltage-reducing power supply 11 is configured to convert the high voltage output by the vehicle-mounted charger 10 into low voltage for supplying to a low voltage network of the whole vehicle and charging a low voltage battery in the low voltage network, and the working voltages of the vehicle-mounted charger 10 and the main voltage-reducing power supply 11 are supplied by the low voltage battery through the low voltage network; by further arranging the auxiliary step-down power supply 12 on the basis of the main step-down power supply 11, when abnormal circuit breaking occurs between the low-voltage storage battery and the integrated power control system, necessary working low voltage is provided to maintain normal work of the vehicle-mounted charger 10 and the main step-down power supply 11, and continuous power supply on demand of a whole vehicle low-voltage circuit is further ensured.
Accordingly, if the on-board charger 10 does not receive external ac power, the high voltage may be provided by the battery pack received via the high voltage interface 15 and converted into a low voltage by the first conversion unit 1, which may also supply power to the low voltage battery in the low voltage network.
In the above embodiment, the main voltage-reducing power supply 11 determines whether the low-voltage battery supplies power for the operations of the vehicle-mounted charger 10 and the main voltage-reducing power supply 11: KL30 and KL31 represent the connection between the low-voltage terminal and the positive electrode and the negative electrode of the vehicle-mounted low-voltage battery respectively, and when the KL30 is in a circuit breaking condition, the low-voltage battery cannot work and supply power to the integrated power control system, so that the judgment on whether the low-voltage power supply is normal or not can be realized by monitoring the connection relationship between the low-voltage battery and the integrated power control system.
In the above embodiment, when it is monitored that the low-voltage battery and the integrated power control system are in an open circuit relationship, the main step-down power supply 11 serving as the monitoring subject generates a wake-up signal and sends the wake-up signal to the auxiliary step-down power supply 12, so as to switch the redundant power supply.
In the above specific embodiment, in a normal operating state, the auxiliary step-down power supply 12 is in a dormant state, and is switched to an operating state until receiving the wake-up signal given by the main step-down power supply 11, at this time, because the low-voltage battery cannot provide necessary working low-voltage electricity, the auxiliary step-down power supply 12 directly takes electricity from the high-voltage direct-current bus between the vehicle-mounted charger 10 and the high-voltage interface 15, and steps down the working low-voltage electricity with a predetermined voltage value, and provides the working low-voltage electricity for the vehicle-mounted charger 10 and the main step-down power supply 11 through a low-voltage network inside the integrated power control system, thereby ensuring that the main step-down power supply 11.
In the above embodiment, after the auxiliary voltage-reducing power supply 12 is switched from the sleep state to the working state, the real-time working condition information of the auxiliary voltage-reducing power supply 12 needs to be transmitted back to the main voltage-reducing power supply 11 and the main voltage-reducing power supply 11 performs necessary monitoring on the real-time working condition thereof, where the real-time working condition information includes, but is not limited to, the real-time working state of the auxiliary voltage-reducing power supply 12, and normal working information such as the fault level, the fault code, the input voltage current, the output voltage current, and the like of.
In the above embodiment, after the main voltage-reducing power supply 11 aggregates the real-time working state information returned by the auxiliary voltage-reducing power supply 12, part of the screened real-time working condition state information is reported to the power CAN bus of the entire vehicle according to the actual requirements of the user for the user to check in time, so as to meet the actual application requirements of timely troubleshooting and the like.
In the above specific embodiment, when there is KL30 abnormal open circuit, the main step-down power supply 11 realizes fast wake-up of the auxiliary step-down power supply 12 by using independent switching signals through hard-line transmission, and the switching signals are identified by using isWkUp, so that fast redundant power supply switching response can be realized when abnormal open circuit occurs, and it is ensured that the power demand of the entire vehicle low-voltage network is continuously satisfied by the main step-down power supply 11.
In the above embodiment, since the main voltage-reducing power supply 11 is used for continuously monitoring the connection relationship between the integrated power control system and the low-voltage battery while performing voltage-reducing operation, when the connection condition is disconnected, the main voltage-reducing power supply 11 needs to wake up the auxiliary voltage-reducing power supply 12 to perform redundant power supply, and needs to feed back the fault information to the user to remove it in time: the fault code may be generated and transmitted to an external user interaction terminal, or the fault code may be correspondingly reported back through a power management CAN bus of the entire vehicle, and the specific notification manner may be adaptively modified according to the actual needs of the user, which is not limited herein.
In the above embodiment, when the abnormal open circuit fault of the KL30 is eliminated after maintenance, and the connection condition is restored from the open circuit to the connection state, the low-voltage battery can resume normal operation low-voltage power supply to the vehicle-mounted charger 10 and the main voltage-reducing power supply 11 at this time, and redundant power supply by the auxiliary voltage-reducing power supply 12 is not needed, at this time, the main voltage-reducing power supply 11 generates a sleep signal again and sends the sleep signal to the auxiliary voltage-reducing power supply 12 to control the auxiliary voltage-reducing power supply 12 to enter the sleep state again, and the main voltage-reducing power supply 11 wakes up again when the next abnormal open circuit.
In the above embodiment, the auxiliary voltage-reducing power supply 12 and the main voltage-reducing power supply 11 are connected by a hard-wire signal to wake up quickly, and the two are connected by a CAN bus to realize information interaction, so that the auxiliary voltage-reducing power supply 12 CAN continuously feed back the real-time working condition information of the auxiliary voltage-reducing power supply 12 to the main voltage-reducing power supply 11 through the CAN bus after working. In the above embodiment, the hard-wired connection and the CAN bus connection are in a parallel configuration.
In the above embodiment, after the auxiliary voltage-reducing power supply 12 obtains electricity from the high-voltage dc bus, the voltage-reducing operation needs to be performed on the obtained electricity so that the output working voltage meets the working requirements of the vehicle-mounted charger 10 and the main voltage-reducing power supply 11. In the above preferred embodiment, the voltage corresponding to the operating voltage is set to a default value of 13.5V. In different application scenarios, the voltage corresponding to the working voltage may also be adaptively modified according to the actual requirement of the user, which is not limited herein.
A vehicle comprising the integrated power control apparatus of any of the above.
A vehicle comprises the vehicle-mounted integrated power control system.
An integrated power control method is applied to the integrated power control system, and comprises the following steps:
step S1, continuously detecting the working voltage and outputting a switching signal when the working voltage disappears;
in step S2, the high voltage is converted into a working voltage according to the switching signal and output to the low voltage circuit.
In another preferred embodiment of the present invention, there is further provided an integrated power control method, which is used in combination with the integrated power control system: when the integrated power control system is in a working state, the working voltage supply conditions of a vehicle-mounted charger 10 and a main step-down power supply 11 in the integrated power control system need to be continuously monitored, and when the working voltage supply abnormal conditions occur, the auxiliary step-down power supply 12 is controlled in time to carry out redundant power supply:
in the above preferred embodiment, the auxiliary step-down power supply 12 does not operate in the normal state, and the redundant power supply operation is not executed until the integrated power control system detects that the operating voltage supply is abnormal: the power is obtained by connecting a high-voltage output bus between the vehicle-mounted charger 10 and the high-voltage interface 15, and the working voltage is output to the vehicle-mounted charger 10 and the main voltage-reducing power supply 11 by voltage-reducing operation.
In the above preferred embodiment, when the ac power is not supplied from the outside, the vehicle-mounted charger 10 does not need to perform the operation of converting the ac power to the high voltage, the battery pack directly inputs the high voltage to the high voltage network through the high voltage interface 15, the auxiliary step-down power supply 12 takes the power through the high voltage output bus connected to the high voltage interface 15 and performs the determination, and the rest of the processing procedures are the same as those described above.
In the above preferred embodiment, the method may further include a step S4: after the auxiliary step-down power supply 12 is switched from the sleep state to the operating state, the real-time operating condition information of the auxiliary step-down power supply 12 needs to be transmitted back to the main step-down power supply 11 and the main step-down power supply 11 performs necessary monitoring on the real-time operating condition of the auxiliary step-down power supply, wherein the real-time operating condition information includes but is not limited to the real-time operating state of the auxiliary step-down power supply 12, and normal operating information such as the fault level, the fault code, the input voltage current, the output voltage current.
In the above preferred embodiment, the method may further include a step S5: after the real-time working state information returned by the auxiliary voltage-reducing power supply 12 is collected, the main voltage-reducing power supply 11 reports part of the screened real-time working condition state information to a power CAN bus of the whole vehicle according to the actual requirements of users for the users to check in time, so that the advanced requirements of the users for timely eliminating faults are met, and the interactivity of the control method is improved, and meanwhile, the use experience of the users is further improved.
In the above preferred embodiment, the information interaction between the auxiliary step-down power supply 12 and the main step-down power supply 11 is realized through a CAN bus connection structure, so that the auxiliary step-down power supply 12 CAN continuously feed back its own real-time operating condition information to the main step-down power supply 11 through a CAN bus after operating; in the preferred embodiment, the hard-wired connection and the CAN bus connection are in a parallel independent configuration.
In summary, according to the technical scheme, the working voltage supply condition of the low-voltage circuit to each power conversion unit can be continuously detected, and when the working voltage disappears, based on the redundant power supply concept, the standby power conversion unit is switched, so that power is taken from the high voltage, the working voltage with the default value is output, and the working voltage is supplied to each power conversion unit through the low-voltage network, and further, the normal operation of the vehicle-mounted low-voltage network is effectively protected, the system robustness is greatly reduced, and the popularization value is achieved.
While the invention has been described with reference to a preferred embodiment, it will be understood by those skilled in the art that various changes in form and detail may be made therein without departing from the spirit and scope of the invention.
Claims (18)
1. An integrated power control apparatus, comprising:
the first conversion unit is used for converting a high voltage input through a high-voltage loop into a low voltage and outputting the low voltage to a low-voltage loop, and the low-voltage loop is also connected with the first conversion unit and used for providing working voltage for the first conversion unit;
the detection unit is used for continuously detecting the working voltage and outputting a switching signal when the working voltage disappears;
and the second conversion unit is respectively connected with the detection unit and the high-voltage loop and used for converting the high voltage into the working voltage and outputting the working voltage to the low-voltage loop according to the switching signal.
2. The integrated power control device according to claim 1, further comprising a third converting unit for converting an external ac current into a high voltage and outputting the high voltage to the high voltage circuit;
the first conversion unit and the second conversion unit are respectively connected to the high-voltage loop through the output end of the third conversion unit.
3. The integrated power control device according to claim 2, further comprising a first input port, wherein the first input port is connected to the external ac current and the third converting unit, respectively.
4. The integrated power control device of claim 2, further comprising a second input port connected to the low voltage network, the operating voltage input of the first converting unit, the output of the second converting unit, and the operating voltage input of the third converting unit, respectively.
5. The integrated power control device of claim 1, further comprising a high voltage interface, the high voltage interface coupled to the high voltage circuit and a battery pack.
6. The integrated power control device of claim 1, further comprising a low voltage output port connected to the output of the second conversion unit and the low voltage loop, respectively.
7. The integrated power control apparatus of claim 1, wherein the second conversion unit is in a sleep state when the switching signal is not accepted.
8. The integrated power control device of claim 7, wherein when the detection unit detects that the operating voltage is received, a sleep signal is output and transmitted to the second conversion unit.
9. The integrated power control device of claim 1, wherein the integrated power control device comprises a feedback unit connected to the second converting unit;
when the second conversion unit receives the switching signal, the second conversion unit continuously transmits the real-time working condition information back to the feedback unit.
10. The integrated power control device of claim 9, wherein the real-time operating condition information includes a real-time operating state, a fault level, a fault code, an input voltage, an input current, an output voltage, and an output current of the second conversion unit.
11. The integrated power control device of claim 1, wherein the detection unit further generates a fault alarm and outputs the fault alarm to an external control terminal when the operating voltage is removed.
12. The integrated power control device of claim 1, wherein the operating voltage is 9V to 16V.
13. The integrated power control device of claim 1, wherein the detection unit is integrated with the first conversion unit.
14. The integrated power control device of claim 9, wherein the feedback unit is integrated with the first conversion unit.
15. An in-vehicle integrated power control system characterized by comprising the integrated power control apparatus according to any one of claims 1 to 14;
the on-vehicle integrated power control system further includes:
the low-voltage storage battery is connected with the low-voltage loop in parallel and used for providing the working voltage for the low-voltage loop;
the low-voltage loop is also used for charging the low-voltage storage battery.
16. A vehicle characterized by comprising an integrated power control apparatus as claimed in any one of claims 1 to 14.
17. A vehicle characterized by comprising the on-vehicle integrated power control system of claim 15.
18. An integrated power control method applied to the integrated power control apparatus according to any one of claims 1 to 14, the integrated power control method comprising the steps of:
step S1, continuously detecting the working voltage and outputting a switching signal when the working voltage disappears;
step S2, converting the high voltage into the working voltage according to the switching signal, and outputting the working voltage to the low voltage loop.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011568446.6A CN112838662A (en) | 2020-12-25 | 2020-12-25 | Integrated power control device, system and method and vehicle |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011568446.6A CN112838662A (en) | 2020-12-25 | 2020-12-25 | Integrated power control device, system and method and vehicle |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN112838662A true CN112838662A (en) | 2021-05-25 |
Family
ID=75924762
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202011568446.6A Pending CN112838662A (en) | 2020-12-25 | 2020-12-25 | Integrated power control device, system and method and vehicle |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN112838662A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113752837A (en) * | 2021-09-29 | 2021-12-07 | 中国第一汽车股份有限公司 | Low-voltage power supply control system and method for vehicle |
| CN115723576A (en) * | 2022-12-09 | 2023-03-03 | 潍柴动力股份有限公司 | Power shortage protection system, control method and device for vehicle low-voltage power supply |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3452347A (en) * | 1966-11-03 | 1969-06-24 | Eastman Kodak Co | Luminous diode battery condition indicator for camera |
| CN105346594A (en) * | 2015-12-10 | 2016-02-24 | 苏州绿控传动科技有限公司 | Automotive dual-source low-voltage electric power-assisted steering system |
| CN110932384A (en) * | 2019-12-16 | 2020-03-27 | 珠海格力电器股份有限公司 | Power supply management system and method and robot |
| CN110920437A (en) * | 2019-11-18 | 2020-03-27 | 武汉合康动力技术有限公司 | Low-voltage power supply control system and method for new energy automobile |
| CN111216556A (en) * | 2020-02-20 | 2020-06-02 | 新石器慧通（北京）科技有限公司 | Low-voltage power storage unit charging control method and system and unmanned vehicle |
-
2020
- 2020-12-25 CN CN202011568446.6A patent/CN112838662A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3452347A (en) * | 1966-11-03 | 1969-06-24 | Eastman Kodak Co | Luminous diode battery condition indicator for camera |
| CN105346594A (en) * | 2015-12-10 | 2016-02-24 | 苏州绿控传动科技有限公司 | Automotive dual-source low-voltage electric power-assisted steering system |
| CN110920437A (en) * | 2019-11-18 | 2020-03-27 | 武汉合康动力技术有限公司 | Low-voltage power supply control system and method for new energy automobile |
| CN110932384A (en) * | 2019-12-16 | 2020-03-27 | 珠海格力电器股份有限公司 | Power supply management system and method and robot |
| CN111216556A (en) * | 2020-02-20 | 2020-06-02 | 新石器慧通（北京）科技有限公司 | Low-voltage power storage unit charging control method and system and unmanned vehicle |
Non-Patent Citations (1)
| Title |
|---|
| 崔新: "车载空调低压继电器设计", 《科学技术创新》, vol. 15, pages 199 - 200 * |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113752837A (en) * | 2021-09-29 | 2021-12-07 | 中国第一汽车股份有限公司 | Low-voltage power supply control system and method for vehicle |
| CN115723576A (en) * | 2022-12-09 | 2023-03-03 | 潍柴动力股份有限公司 | Power shortage protection system, control method and device for vehicle low-voltage power supply |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN101966841B (en) | Control method of DC/DC conversion system of electric vehicle | |
| CN105313718A (en) | Vehicle-mounted storage battery charging equipment, system and method | |
| CN102717763A (en) | Hybrid control unit of electromobile and power-on and power-off control circuit of hybrid control unit | |
| CN109245085A (en) | DC energy storage backup power supply and control method with peak load shifting function | |
| CN105383320B (en) | One kind is used for cell management system of electric automobile alternative power source system and application method | |
| CN109421542A (en) | Method for electrically under electric automobile high-voltage | |
| CN112838662A (en) | Integrated power control device, system and method and vehicle | |
| CN102673424A (en) | Weak-current power supply system for power control unit (PCU) of electric automobile | |
| CN103138018A (en) | Battery management system state switching method | |
| CN205113046U (en) | Vehicle -mounted storage battery battery charging outfit and system | |
| CN111469709A (en) | Vehicle, power battery monitoring device and DC/DC module awakening method | |
| CN113799610A (en) | Vehicle redundancy control method and device and vehicle | |
| CN112009247B (en) | High-voltage power-on method of vehicle-mounted charging system of electric vehicle | |
| CN214227919U (en) | Vehicle-mounted standby power supply circuit and vehicle-mounted equipment | |
| CN101638073A (en) | Control device and control method for long-time storage and transportation mode | |
| CN114243824A (en) | Electric automobile power management module, electric automobile and power management method | |
| CN113126586B (en) | Wake-up diagnostic device and wake-up diagnostic method | |
| CN112440896B (en) | L3 intelligent driving power grid system and vehicle | |
| CN211000942U (en) | Low-voltage power supply management system for safety monitoring of power battery of electric automobile | |
| CN111386654B (en) | Wind power generation system and power conversion device | |
| CN114696435A (en) | Vehicle emergency charging system, control method and vehicle | |
| CN109130860B (en) | Multisource monitored control system and power module | |
| CN109412262A (en) | Small proportion, the hybrid ups power vehicle of multi-functional output and application method | |
| CN219339208U (en) | Unmanned vehicle's electrical power generating system and unmanned vehicle | |
| CN217396456U (en) | Vehicle power supply system |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination |