CN114865777B - Vehicle power supply control system and method and automobile - Google Patents
Vehicle power supply control system and method and automobile Download PDFInfo
- Publication number
- CN114865777B CN114865777B CN202210607818.4A CN202210607818A CN114865777B CN 114865777 B CN114865777 B CN 114865777B CN 202210607818 A CN202210607818 A CN 202210607818A CN 114865777 B CN114865777 B CN 114865777B
- Authority
- CN
- China
- Prior art keywords
- power supply
- source
- auxiliary power
- load
- auxiliary
- 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.)
- Active
Links
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
- H02J9/068—Electronic means for switching from one power supply to another power supply, e.g. to avoid parallel connection
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60R—VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR
- B60R16/00—Electric or fluid circuits specially adapted for vehicles and not otherwise provided for; Arrangement of elements of electric or fluid circuits specially adapted for vehicles and not otherwise provided for
- B60R16/02—Electric or fluid circuits specially adapted for vehicles and not otherwise provided for; Arrangement of elements of electric or fluid circuits specially adapted for vehicles and not otherwise provided for electric constitutive elements
- B60R16/03—Electric or fluid circuits specially adapted for vehicles and not otherwise provided for; Arrangement of elements of electric or fluid circuits specially adapted for vehicles and not otherwise provided for electric constitutive elements for supply of electrical power to vehicle subsystems or for
- B60R16/033—Electric or fluid circuits specially adapted for vehicles and not otherwise provided for; Arrangement of elements of electric or fluid circuits specially adapted for vehicles and not otherwise provided for electric constitutive elements for supply of electrical power to vehicle subsystems or for characterised by the use of electrical cells or batteries
-
- 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
Abstract
The invention provides a vehicle power supply control system, which comprises a main power supply source, an auxiliary power supply source, an intelligent power distribution unit, a domain controller, a primary load and a secondary load, wherein the main power supply source is connected with the auxiliary power supply source; when the main power supply and the auxiliary power supply are both normal, the primary load realizes double-power-supply-source redundant power supply by the intelligent power distribution unit, and the secondary load is connected with the intelligent power distribution unit through the domain controller to realize double-power-supply-source redundant power supply; when the main power supply or the auxiliary power supply is abnormal, the primary load realizes the power supply of the single power supply by the intelligent power distribution unit, and the secondary load is connected with the intelligent power distribution unit through the domain controller to realize the power supply of the single power supply. The implementation of the invention can not only provide the redundant power supply requirement of the key system of driving safety, but also flexibly deal with the system fault of the self to carry out high-efficiency isolation protection, thereby improving the reliability of the power supply system of the whole vehicle and avoiding causing serious traffic accidents.
Description
Technical Field
The invention relates to the technical field of automobiles, in particular to a vehicle power supply control system and method and an automobile.
Background
With the rapid development of the automobile electromotion, networking and intellectualization directions, the automobile automatic driving technology is remarkably improved, so that a power supply system must provide a reliable and safe power grid.
However, the power supply mode of the single power supply system adopted by the existing vehicle cannot meet the safety level requirement of the future vehicle, cannot provide the redundant power supply requirement of the driving safety critical systems such as an EPS (electric power steering), an IBCS (integrated brake control system), an ADC (intelligent driving control system) and the like, and cannot flexibly deal with the system fault of the vehicle to carry out efficient isolation protection, thereby easily causing serious traffic accidents.
Therefore, in order to solve the above-mentioned shortcomings and improve the reliability of the power supply system of the entire vehicle, a new power supply control system for the vehicle is needed.
Disclosure of Invention
The technical problem to be solved by the embodiments of the present invention is to provide a vehicle power supply control system, method and vehicle, which not only can provide redundant power supply requirements of a driving safety critical system, but also can flexibly deal with system faults of the vehicle to perform efficient isolation protection, improve the reliability of a vehicle power supply system, and avoid causing serious traffic accidents.
In order to solve the technical problem, an embodiment of the present invention provides a vehicle power supply control system, including a main power supply, an auxiliary power supply, an intelligent power distribution unit, a domain controller, a primary load and a secondary load; wherein the content of the first and second substances,
when the main power supply source and the auxiliary power supply source are both normal, the primary load realizes double power supply source redundant power supply by the intelligent power distribution unit, and the secondary load is connected with the intelligent power distribution unit through the domain controller to realize double power supply source redundant power supply; wherein the double power supply sources are the main power supply source and the auxiliary power supply source;
when the main power supply or the auxiliary power supply is abnormal, the primary load is powered by a single power supply through the intelligent power distribution unit, and the secondary load is connected with the intelligent power distribution unit through the domain controller to realize power supply of the single power supply; wherein, the single power supply is a normal main power supply or a normal auxiliary power supply.
The number of the secondary power supplies is two, and the secondary power supplies comprise a first secondary power supply and a second secondary power supply; the primary load comprises a safety load and a large-current conventional load capable of bearing a certain current threshold; wherein the content of the first and second substances,
the intelligent power distribution unit comprises a power supply voltage detection module, a load current detection module and a power supply protection module;
the power supply voltage detection module is used for periodically detecting the voltage abnormal conditions of the main power supply, the first auxiliary power supply and the second auxiliary power supply;
the load current detection module is used for periodically detecting the loop current abnormal conditions of the large-current conventional load and the safety load;
the power supply protection module is used for cutting off the power supply of the main power supply when the voltage of the main power supply is judged to be abnormal in a certain period, and communicating the first auxiliary power supply and/or the second auxiliary power supply to supply power only to the safety load; when the voltage of the first auxiliary power source or the second auxiliary power source is judged to be abnormal in a certain period, cutting off the power supply of the first auxiliary power source with abnormal voltage or the second auxiliary power source with abnormal voltage; when the current abnormality of the large-current conventional load is determined in a certain period, cutting off the power supply of all power supplies to the large-current conventional load; and when the current of the safety load is judged to be abnormal in a certain period, cutting off the power supply of the main power supply source and the auxiliary power supply source which are currently connected with the safety load, and connecting another auxiliary power supply source except the currently cut-off auxiliary power supply source for supplying power.
The main power supply source consists of a battery pack and a DC/DC inversion module which are connected in sequence; the first auxiliary power supply and the second auxiliary power supply are both chargeable and dischargeable storage batteries.
When the first auxiliary power supply and the second auxiliary power supply are both rechargeable storage batteries, the intelligent power distribution unit further comprises a battery charging module; wherein the content of the first and second substances,
the battery charging module is configured to periodically detect SOC values of the first auxiliary power source and the second auxiliary power source, and when it is determined in a certain period that the SOC values of the first auxiliary power source and/or the second auxiliary power source are abnormal, charge the first auxiliary power source with the abnormal SOC value and/or the second auxiliary power source with the abnormal SOC value by the main power source until the SOC values of the first auxiliary power source and the second auxiliary power source are normal.
The embodiment of the invention also provides a vehicle power supply control method, which comprises the following steps:
the intelligent power distribution unit periodically detects the voltage abnormal conditions of the main power supply source, the first auxiliary power supply source and the second auxiliary power supply source;
the intelligent power distribution unit periodically detects loop current abnormal conditions of a large-current conventional load and a safety load;
when the intelligent power distribution unit judges that the voltage of the main power supply source is abnormal in a certain period, the power supply of the main power supply source is cut off, and the first auxiliary power supply source and/or the second auxiliary power supply source are communicated to supply power only to the safety load; when the voltage of the first auxiliary power source or the second auxiliary power source is judged to be abnormal in a certain period, cutting off the power supply of the first auxiliary power source with abnormal voltage or the second auxiliary power source with abnormal voltage; when the current of the large-current conventional load is judged to be abnormal in a certain period, cutting off the power supply of all power supplies to the large-current conventional load; and when the current of the safety load is judged to be abnormal in a certain period, cutting off the power supply of the main power supply source and the auxiliary power supply source which are currently connected with the safety load, and connecting another auxiliary power supply source except the currently cut-off auxiliary power supply source for supplying power.
Wherein the method further comprises:
when the first auxiliary power source and the second auxiliary power source are both chargeable and dischargeable storage batteries, the intelligent power distribution unit periodically detects the SOC values of the first auxiliary power source and the second auxiliary power source, and when the SOC values of the first auxiliary power source and/or the second auxiliary power source are determined to be abnormal in a certain period, the main power source charges the first auxiliary power source with the abnormal SOC value and/or the second auxiliary power source with the abnormal SOC value until the SOC values of the first auxiliary power source and the second auxiliary power source are normal.
Wherein the judgment condition of the voltage abnormity of the main power supply source is that the voltage is out of the range of [6V and 18V ].
The judgment condition that the voltage of the first auxiliary power supply and/or the second auxiliary power supply is abnormal is that the voltage is less than 6V; and the SOC value of the first auxiliary power supply and/or the second auxiliary power supply is abnormal under the condition that the SOC value is less than 80%.
And judging the current abnormality of the large-current conventional load and/or the load current under the condition that the instantaneous current is greater than 400A.
The embodiment of the invention further provides an automobile which comprises the vehicle power supply control system.
The embodiment of the invention has the following beneficial effects:
1. the intelligent power supply system is different from the existing single power supply control system, double power grids of the whole vehicle are built through the main power supply, the auxiliary power supply, the intelligent power distribution unit, the domain controller, the primary load and the secondary load to carry out intelligent power distribution on the power consumption of the whole vehicle, faults of power supply nodes of the double power grids can be accurately identified through the intelligent power distribution unit and can be rapidly cut off and switched, and the intelligent power supply system meeting the requirements of L3-level intelligent driving safety parking is met, so that the redundant power supply requirement of a key system of driving safety is provided, the reliability of the power supply system of the whole vehicle is improved, and serious traffic accidents are avoided;
2. the power supply system cuts off the power supply of the main power supply when the voltage of the main power supply is abnormal, and connects the first auxiliary power supply and/or the second auxiliary power supply to supply power, cuts off the power supply of a single auxiliary power supply with abnormal voltage when the voltage of the first auxiliary power supply or the second auxiliary power supply is abnormal, and cuts off the power supply of all power supplies when the current of a large-current conventional load is abnormal, thereby realizing the mutual independence of power distribution control of the power supplies and the load, improving the stability of double-power-grid power supply when dealing with faults, further improving the reliability of the power supply system of the whole vehicle, and avoiding causing serious traffic accidents;
3. the invention actively cuts off the power supply of the main power supply source and the auxiliary power supply source which are connected with the safety load at present and rapidly switches the main power supply source and the auxiliary power supply source to another auxiliary power supply source for standby power supply when the current of the safety load is abnormal, and simultaneously, the power supply abnormality of the conventional load caused by directly cutting off the whole power grid can not be caused, thereby realizing the isolation of the safety load and the large-current conventional load, realizing the high-efficiency isolation protection for flexibly coping with the system fault of the safety load while ensuring the power supply state of the safety load, reducing the influence of the fault on the power supply of the conventional load, further improving the reliability of the power supply system of the whole vehicle and avoiding causing serious traffic accidents.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the embodiments or the prior art descriptions will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is within the scope of the present invention for those skilled in the art to obtain other drawings based on the drawings without inventive labor.
Fig. 1 is a schematic structural diagram of a vehicle power supply control system according to an embodiment of the present invention;
fig. 2 is a logical structure block diagram of an intelligent power distribution unit in a vehicle power supply control system according to an embodiment of the present invention;
fig. 3 is an application scenario diagram of a vehicle power supply control system according to an embodiment of the present invention;
FIG. 4 is a schematic diagram of the operation of FIG. 3;
fig. 5 is a flowchart of a vehicle power supply control method according to an embodiment of the present invention.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention will be described in further detail with reference to the accompanying drawings.
As shown in fig. 1, in an embodiment of the present invention, a vehicle power supply control system is provided, which includes a main power supply 1, an auxiliary power supply 2, an intelligent power distribution unit 3, a domain controller 4, a primary load 5, and a secondary load 6; wherein the content of the first and second substances,
when the main power supply source 1 and the auxiliary power supply source 2 are both normal, the primary load 5 realizes double-power-supply-source redundant power supply by the intelligent power distribution unit 3, and the secondary load 6 is connected with the intelligent power distribution unit 3 through the domain controller 4 to realize double-power-supply-source redundant power supply; wherein, the double power supply sources are a main power supply source 1 and an auxiliary power supply source 2;
when the main power supply 1 or the auxiliary power supply 2 is abnormal, the primary load 5 is supplied with power by the single power supply through the intelligent power distribution unit 3, and the secondary load 6 is connected with the intelligent power distribution unit 3 through the domain controller 4 to supply power by the single power supply; wherein, the single power supply is a normal main power supply 1 or a normal auxiliary power supply 2.
It can be understood that, through main power supply 1, supplementary power supply 2, intelligent power distribution unit 3, domain controller 4, two electric networks of whole car have been set up to one-level load 5 and second grade load 6 and have carried out intelligent power distribution to whole car power consumption, can carry out accurate discernment and cut off rapidly and switch over the processing to two electric network power supply node trouble through intelligent power distribution unit 3, the intelligent power supply system of the safe parking requirement of L3 level intelligent driving has been satisfied, thereby the redundant power supply demand of the key system of driving safety is provided, the reliability of whole car electrical power generating system has been improved, avoid causing serious traffic accident.
In one example, as shown in fig. 2 and 3, the main power supply 1 is composed of a battery pack and a DC/DC inverter module which are connected in sequence; the number of the auxiliary power sources 2 is two, the two auxiliary power sources comprise a first auxiliary power source BAT1 and a second auxiliary power source BAT2, and the first auxiliary power source and the second auxiliary power source are both rechargeable storage batteries; the primary load 5 comprises a safety load and a large-current conventional load capable of bearing a certain current threshold; the secondary load 6 is a low current conventional load. It should be noted that the large-current normal load and the small-current normal load are divided according to the magnitude of the current actually carried in the vehicle component, and may be distinguished by performing threshold adjustment.
At this time, the intelligent power distribution unit 3 realizes intelligent power distribution of the whole vehicle power consumption by the first power grid and the second power grid, and the intelligent power distribution unit 3 comprises a power supply voltage detection module 31, a load current detection module 32 and a power supply protection module 33; wherein the content of the first and second substances,
a power voltage detection module 31, configured to periodically (e.g., once every 5S) detect voltage abnormalities of a main power supply (e.g., composed of a battery pack and a DC/DC inversion module), a first auxiliary power supply BAT1, and a second auxiliary power supply BAT 2; for example, the judgment condition of the voltage abnormality of the main power supply is that the voltage is outside the [6V,18V ] range; the judgment condition that the voltage of the first auxiliary power supply BAT1 and/or the second auxiliary power supply BAT2 is abnormal is that the voltage is less than 6V;
the load current detection module 32 is used for periodically (for example, once every 5S) detecting loop current abnormal conditions of the large-current conventional load and the safety load; for example, the judgment condition of the current abnormality of the large-current conventional load and the load current is that the instantaneous current is larger than 400A;
the power supply protection module 33 is used for cutting off the power supply of the main power supply when the voltage of the main power supply is judged to be abnormal (namely the voltage is out of the range of [6V,18V ]) in a certain period, and communicating the first auxiliary power supply BAT1 and/or the second auxiliary power supply BAT2 to supply power only to a safety load; when the voltage of the first auxiliary power supply source BAT1 and/or the second auxiliary power supply source BAT2 is judged to be abnormal (for example, the voltage is less than 6V) in a certain period, the power supply of the first auxiliary power supply source BAT1 with the abnormal voltage or the second auxiliary power supply source BAT2 with the abnormal voltage is cut off, namely, the power supply is carried out by the main power supply source and the normal auxiliary power supply source; when the current abnormality (such as the instantaneous current is larger than 400A) of the large-current conventional load is determined in a certain period, cutting off the power supply of all power supply sources (namely cutting off the main power supply source, the first auxiliary power supply source BAT1 and the second auxiliary power supply source BAT 2) to the large-current conventional load; and when the current of the safety load is determined to be abnormal (for example, the instantaneous current is more than 400A) in a certain period, cutting off the power supply of the main power supply source and the auxiliary power supply source which are currently connected with the safety load, and connecting another auxiliary power supply source except the currently cut-off auxiliary power supply source for supplying power; for example, the power supply of the originally connected main power supply source and first auxiliary power supply source BAT1 is cut off, and the power supply is switched to another second auxiliary power supply source BAT 2.
Meanwhile, when the first auxiliary power supply BAT1 and the second auxiliary power supply BAT2 are both rechargeable storage batteries, the intelligent power distribution unit 3 further includes a battery charging module 34; wherein, the first and the second end of the pipe are connected with each other,
the battery charging module 34 is configured to periodically (e.g., once every 5S) detect SOC values of the first secondary power supply BAT1 and the second secondary power supply BAT2, and when it is determined that the SOC values of the first secondary power supply BAT1 and/or the second secondary power supply BAT2 are abnormal (e.g., the SOC values are less than 80%) in a certain period, charge the first secondary power supply BAT1 having the abnormal SOC value and/or the second secondary power supply BAT2 having the abnormal SOC value by the primary power supply until the SOC values of the first secondary power supply BAT1 and the second secondary power supply BAT2 are normal.
As shown in fig. 4, the working principle of the vehicle power supply control system in the embodiment of the present invention is further explained based on fig. 3, which includes the following steps:
the conventional loads 1, 2 in fig. 3 are primary loads; the conventional loads 3 and 4 are secondary loads; the MCU arranged in the intelligent power distribution unit can realize all functions of the power supply voltage detection module, the load current detection module, the power supply protection module and the battery charging module.
When the intelligent power distribution unit detects that the input voltage of DC/DC at the main power supply side is abnormal, a fault is diagnosed and the power supply of a built-in MCU cut-off switch Q6 and a switch Q7 is driven, a first auxiliary power supply BAT1 and a second auxiliary power supply BAT2 double batteries supply power to double power grids, meanwhile, the cut-off switch Q2 cuts off the power supply to a large-current conventional load 1 according to the safe parking condition, and only the safe load 1 is kept to be supplied with power.
When the intelligent power distribution unit detects that the battery voltage of the first auxiliary power supply BAT1 is abnormal, a fault is diagnosed and the built-in MCU cut-off switch Q4 is driven, the DC \ DC at the main power supply side is not influenced to supply power for the power grid 1, the DC \ DC at the main power supply side is not influenced to supply power for the power grid 2, and the second auxiliary power supply BAT2 is used for redundant power supply of the power grid 2.
When the intelligent power distribution unit detects that the loop current of the safety load 1 is abnormal, a fault is diagnosed and the built-in MCU is driven to cut off the switch Q1, the power supply of the DC \ DC at the main power supply side and the first auxiliary power supply BAT1 is cut off, and the switch Q3 is further switched on, so that the second auxiliary power supply BAT2 is ensured to normally supply power to the safety load 1, and meanwhile, the power supply of the large-current conventional load 1 is not influenced.
When the intelligent power distribution unit detects that the loop current of the large-current conventional load 1 is abnormal, a fault is diagnosed and the built-in MCU cut-off switch Q2 is driven, so that the power supply of the safety load 1 is not influenced.
When the intelligent power distribution unit detects that the SOC values of the first auxiliary power supply BAT1 and the second auxiliary power supply BAT2 are smaller than 80%, the whole vehicle network is awakened and a charging request signal is sent out, and high voltage on the whole vehicle is requested to charge the batteries of the first auxiliary power supply BAT1 and the second auxiliary power supply BAT 2.
As shown in fig. 5, in an embodiment of the present invention, a vehicle power supply control method is provided, which is implemented on the foregoing vehicle power supply control system, and includes the following steps:
s1, periodically detecting voltage abnormal conditions of a main power supply source, a first auxiliary power supply source and a second auxiliary power supply source by an intelligent power distribution unit;
s2, the intelligent power distribution unit periodically detects loop current abnormal conditions of a large-current conventional load and a safety load;
s3, when the intelligent power distribution unit determines that the voltage of the main power supply source is abnormal in a certain period, cutting off the power supply of the main power supply source, and communicating the first auxiliary power supply source and/or the second auxiliary power supply source to supply power only to the safety load; when the voltage of the first auxiliary power source or the second auxiliary power source is judged to be abnormal in a certain period, cutting off the power supply of the first auxiliary power source with abnormal voltage or the second auxiliary power source with abnormal voltage; when the current abnormality of the large-current conventional load is determined in a certain period, cutting off the power supply of all power supplies to the large-current conventional load; and when the current of the safety load is judged to be abnormal in a certain period, cutting off the power supply of the main power supply source and the auxiliary power supply source which are currently connected with the safety load, and connecting another auxiliary power supply source except the currently cut-off auxiliary power supply source for supplying power.
Wherein the method further comprises:
when the first auxiliary power source and the second auxiliary power source are both chargeable and dischargeable storage batteries, the intelligent power distribution unit periodically detects the SOC values of the first auxiliary power source and the second auxiliary power source, and when the SOC values of the first auxiliary power source and/or the second auxiliary power source are determined to be abnormal in a certain period, the main power source charges the first auxiliary power source with the abnormal SOC value and/or the second auxiliary power source with the abnormal SOC value until the SOC values of the first auxiliary power source and the second auxiliary power source are normal.
Wherein the condition for judging the voltage abnormality of the main power supply is that the voltage is out of the range of [6V and 18V ].
The judgment condition that the voltage of the first auxiliary power supply and/or the second auxiliary power supply is abnormal is that the voltage is less than 6V; and the SOC value of the first auxiliary power supply and/or the second auxiliary power supply is abnormal under the condition that the SOC value is less than 80%.
And judging the current abnormality of the large-current conventional load and/or the load current under the condition that the instantaneous current is greater than 400A.
In response to the vehicle power supply control system provided in the embodiment of the present invention, an embodiment of the present invention further provides an automobile, which includes the vehicle power supply control system provided in the embodiment of the present invention, for which reference is specifically made to the foregoing related contents, and details are not repeated here.
The embodiment of the invention has the following beneficial effects:
1. the intelligent power supply system is different from the existing single power supply control system, double power grids of the whole vehicle are built through the main power supply, the auxiliary power supply, the intelligent power distribution unit, the domain controller, the primary load and the secondary load to carry out intelligent power distribution on the power consumption of the whole vehicle, faults of power supply nodes of the double power grids can be accurately identified through the intelligent power distribution unit and can be rapidly cut off and switched, and the intelligent power supply system meeting the requirements of L3-level intelligent driving safety parking is met, so that the redundant power supply requirement of a key system of driving safety is provided, the reliability of the power supply system of the whole vehicle is improved, and serious traffic accidents are avoided;
2. the power supply system cuts off the power supply of the main power supply when the voltage of the main power supply is abnormal, and connects the first auxiliary power supply and/or the second auxiliary power supply to supply power, cuts off the power supply of a single auxiliary power supply with abnormal voltage when the voltage of the first auxiliary power supply or the second auxiliary power supply is abnormal, and cuts off the power supply of all power supplies when the current of a large-current conventional load is abnormal, thereby realizing the mutual independence of power distribution control of the power supplies and the load, improving the stability of double-power-grid power supply when dealing with faults, further improving the reliability of the power supply system of the whole vehicle, and avoiding causing serious traffic accidents;
3. the invention actively cuts off the power supply of the main power supply source and the auxiliary power supply source which are connected with the safety load at present and rapidly switches the main power supply source and the auxiliary power supply source to another auxiliary power supply source for standby power supply when the current of the safety load is abnormal, and simultaneously, the power supply abnormality of the conventional load can not be caused by directly cutting off the whole power grid, thereby realizing the isolation of the safety load and the large-current conventional load, realizing the high-efficiency isolation protection for flexibly coping with the system fault of the safety load while ensuring the power supply state of the safety load, reducing the influence of the fault on the power supply of the conventional load, further improving the reliability of the power supply system of the whole vehicle and avoiding causing serious traffic accidents.
It should be noted that, in the foregoing system embodiment, each included system unit is only divided according to functional logic, but is not limited to the above division as long as the corresponding function can be implemented; in addition, specific names of the functional units are only for convenience of distinguishing from each other, and are not used for limiting the protection scope of the present invention.
It will be understood by those skilled in the art that all or part of the steps in the method for implementing the above embodiments may be implemented by relevant hardware instructed by a program, and the program may be stored in a computer-readable storage medium, such as ROM/RAM, magnetic disk, optical disk, etc.
The above disclosure is only for the purpose of illustrating the preferred embodiments of the present invention, and it is therefore to be understood that the invention is not limited by the scope of the appended claims.
Claims (9)
1. A vehicle power supply control system is characterized by comprising a main power supply source, an auxiliary power supply source, an intelligent power distribution unit, a domain controller, a primary load and a secondary load; wherein the content of the first and second substances,
when the main power supply source and the auxiliary power supply source are both normal, the primary load realizes double-power-supply-source redundant power supply by the intelligent power distribution unit, and the secondary load is connected with the intelligent power distribution unit through the domain controller to realize double-power-supply-source redundant power supply; the double power supply sources are the main power supply source and the auxiliary power supply source;
when the main power supply or the auxiliary power supply is abnormal, the primary load is powered by a single power supply through the intelligent power distribution unit, and the secondary load is connected with the intelligent power distribution unit through the domain controller to realize power supply of the single power supply; the single power supply source is a normal main power supply source or a normal auxiliary power supply source;
the number of the auxiliary power supplies is two, and the two auxiliary power supplies comprise a first auxiliary power supply and a second auxiliary power supply; the primary load comprises a safety load and a large-current conventional load capable of bearing a certain current threshold; wherein the content of the first and second substances,
the intelligent power distribution unit comprises a power supply voltage detection module, a load current detection module and a power supply protection module;
the power supply voltage detection module is used for periodically detecting the voltage abnormal conditions of the main power supply, the first auxiliary power supply and the second auxiliary power supply;
the load current detection module is used for periodically detecting the loop current abnormal conditions of the large-current conventional load and the safety load;
the power supply protection module is used for cutting off the power supply of the main power supply when the voltage of the main power supply is judged to be abnormal in a certain period, and communicating the first auxiliary power supply and/or the second auxiliary power supply to supply power only to the safety load; when the voltage of the first auxiliary power source or the second auxiliary power source is judged to be abnormal in a certain period, cutting off the power supply of the first auxiliary power source with abnormal voltage or the second auxiliary power source with abnormal voltage; when the current abnormality of the large-current conventional load is determined in a certain period, cutting off the power supply of all power supplies to the large-current conventional load; and when the current of the safety load is judged to be abnormal in a certain period, cutting off the power supply of the main power supply and the auxiliary power supply which are connected with the safety load at present, and connecting another auxiliary power supply except the auxiliary power supply which is cut off at present for supplying power.
2. The vehicle power supply control system according to claim 1, wherein the main power supply source is composed of a battery pack and a DC/DC inverter module which are connected in sequence; the first auxiliary power supply and the second auxiliary power supply are both chargeable and dischargeable storage batteries.
3. The vehicle power supply control system according to claim 2, wherein when both the first auxiliary power source and the second auxiliary power source are chargeable and dischargeable secondary batteries, the intelligent power distribution unit further includes a battery charging module; wherein, the first and the second end of the pipe are connected with each other,
the battery charging module is configured to periodically detect SOC values of the first auxiliary power source and the second auxiliary power source, and when it is determined in a certain period that the SOC values of the first auxiliary power source and/or the second auxiliary power source are abnormal, charge the first auxiliary power source with the abnormal SOC value and/or the second auxiliary power source with the abnormal SOC value by the main power source until the SOC values of the first auxiliary power source and the second auxiliary power source are normal.
4. A vehicle power supply control method characterized by comprising the steps of:
the intelligent power distribution unit periodically detects the voltage abnormal conditions of the main power supply, the first auxiliary power supply and the second auxiliary power supply;
the intelligent power distribution unit periodically detects loop current abnormal conditions of a large-current conventional load and a safety load;
when the intelligent power distribution unit judges that the voltage of the main power supply source is abnormal in a certain period, the power supply of the main power supply source is cut off, and the first auxiliary power supply source and/or the second auxiliary power supply source are communicated to supply power only to the safety load; when the voltage of the first auxiliary power source or the second auxiliary power source is judged to be abnormal in a certain period, cutting off the power supply of the first auxiliary power source with abnormal voltage or the second auxiliary power source with abnormal voltage; when the current abnormality of the large-current conventional load is determined in a certain period, cutting off the power supply of all power supplies to the large-current conventional load; and when the current of the safety load is judged to be abnormal in a certain period, cutting off the power supply of the main power supply source and the auxiliary power supply source which are currently connected with the safety load, and connecting another auxiliary power supply source except the currently cut-off auxiliary power supply source for supplying power.
5. The vehicle electric supply control method according to claim 4, characterized by further comprising:
when the first auxiliary power source and the second auxiliary power source are both chargeable and dischargeable storage batteries, the intelligent power distribution unit periodically detects the SOC values of the first auxiliary power source and the second auxiliary power source, and when the SOC values of the first auxiliary power source and/or the second auxiliary power source are determined to be abnormal in a certain period, the main power source charges the first auxiliary power source with the abnormal SOC value and/or the second auxiliary power source with the abnormal SOC value until the SOC values of the first auxiliary power source and the second auxiliary power source are normal.
6. The vehicle power supply control method according to claim 5, characterized in that the determination condition for the voltage abnormality of the main power supply is that the voltage is outside a [6V,18V ] range.
7. The vehicular electric power supply control method according to claim 5, characterized in that the determination condition that the voltage of the first auxiliary power supply and/or the second auxiliary power supply is abnormal is that the voltage is less than 6V; and the SOC value of the first auxiliary power supply and/or the second auxiliary power supply is abnormal under the condition that the SOC value is less than 80%.
8. The vehicular electric power supply control method according to claim 5, characterized in that the judgment condition of the current abnormality of the large-current regular load and/or the load current is that an instantaneous current is larger than 400A.
9. An automobile characterized by comprising the vehicular electric supply control system according to any one of claims 1 to 3.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210607818.4A CN114865777B (en) | 2022-05-31 | 2022-05-31 | Vehicle power supply control system and method and automobile |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210607818.4A CN114865777B (en) | 2022-05-31 | 2022-05-31 | Vehicle power supply control system and method and automobile |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN114865777A CN114865777A (en) | 2022-08-05 |
| CN114865777B true CN114865777B (en) | 2023-03-24 |
Family
ID=82640446
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202210607818.4A Active CN114865777B (en) | 2022-05-31 | 2022-05-31 | Vehicle power supply control system and method and automobile |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN114865777B (en) |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP6713330B2 (en) * | 2016-04-14 | 2020-06-24 | 株式会社デンソーテン | Vehicle power supply control device, vehicle power supply system, and power supply control method |
| CN112078366B (en) * | 2019-06-12 | 2022-01-21 | 广州汽车集团股份有限公司 | Electric vehicle and dual-power control system thereof |
| CN210985730U (en) * | 2019-12-06 | 2020-07-10 | 中国第一汽车股份有限公司 | Dual-power redundancy system and driving equipment |
| CN111703447A (en) * | 2020-06-10 | 2020-09-25 | 中车长江车辆有限公司 | Railway refrigerator car power supply system and railway refrigerator car |
| CN114024363A (en) * | 2021-11-26 | 2022-02-08 | 深圳威迈斯新能源股份有限公司 | Double-power-supply system based on electric automobile and control method thereof |
-
2022
- 2022-05-31 CN CN202210607818.4A patent/CN114865777B/en active Active
Also Published As
| Publication number | Publication date |
|---|---|
| CN114865777A (en) | 2022-08-05 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US11807109B2 (en) | Power control apparatus and method for autonomous vehicle | |
| US10195959B2 (en) | Vehicle power control | |
| KR101326508B1 (en) | Trouble diagnosis method of current sensor for high voltage battery system | |
| CN109606192B (en) | Power supply system, method and device of electric intelligent automobile and storage medium | |
| CN103326425A (en) | Automobile power battery management system and battery management method | |
| CN110641284A (en) | Low-voltage power supply management system for safety monitoring of power battery of electric automobile | |
| CN110178281A (en) | Managing device and accumulating system | |
| CN112751408A (en) | Power supply circuit and power supply method | |
| KR20220039089A (en) | Power control apparatus and open-circuit faults diagnosis method thereof | |
| CN114865777B (en) | Vehicle power supply control system and method and automobile | |
| CN110212259B (en) | Power supply control circuit, forklift power supply circuit and forklift | |
| CN115366833B (en) | Redundant power supply controller of mine unmanned vehicle | |
| EP4035922A1 (en) | On-board distributed power supply system and on-board power supply control method and apparatus | |
| CN114024363A (en) | Double-power-supply system based on electric automobile and control method thereof | |
| CN113147405B (en) | Automatic high-voltage recovery power-on control method for electric automobile | |
| JP2020029200A (en) | Vehicular power supply system | |
| CN114475489A (en) | Power supply system of automobile, automobile and control method of power supply system of automobile | |
| CN113555926A (en) | Multi-path charging DC cabinet and control method | |
| CN216699605U (en) | Double-power supply system based on electric automobile | |
| CN216659876U (en) | Power supply system for rail vehicle | |
| CN218102956U (en) | Power supply controller, low-voltage power supply circuit and vehicle | |
| US20230264597A1 (en) | In-vehicle system, method, and non-transitory storage medium | |
| CN220934855U (en) | Power grid power supply circuit, intelligent electrical box, power grid power supply system and automobile | |
| CN211000942U (en) | Low-voltage power supply management system for safety monitoring of power battery of electric automobile | |
| CN215897325U (en) | Multichannel DC cabinet that charges |
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 | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |