CN114312629A - Power distribution system and method - Google Patents
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Abstract
The application discloses power distribution system and method, relates to the technical field of vehicle power distribution, and the power distribution system comprises: the power distribution unit is used for distributing power to the unsafe equipment meeting the preset conditions; the first controller is used for generating a first control signal when receiving a vehicle off electric signal and transmitting the first control signal to the power distribution unit; the power distribution unit is used for responding to the first control signal to stop supplying power to the non-safety equipment; the power distribution unit comprises a first insurance which is connected between the power supply and the non-safety equipment in series; when the first fuse is removed, the power supply is disconnected from the non-safety equipment. This application, all carry out power distribution management through the non-safety type equipment that will satisfy preset condition through power distribution unit, realize effectively guaranteeing the reduction of dark current in vehicle parking or transportation, keep the available electric quantity of battery, and then save the use and the cost of transportation of vehicle.
Description
Technical Field
The application relates to the technical field of vehicle power distribution, in particular to a power distribution system and a power distribution method.
Background
At present, when a car is parked, a dark current exists, even though the consumption of the dark current is small, the starting of the car is still affected, and if a rechargeable battery is used, the current consumption phenomenon continues to occur due to the dark current, and the service life of the battery is further reduced. In addition, during long-term parking or transport of the vehicle, dark current in the vehicle can also lead to the possibility of battery feeding. Therefore, it is desirable to reduce the vehicle dark current as much as possible.
In the related art, whether the whole vehicle needs to be charged or not is judged according to the charge state value of the high-voltage battery, and the electric quantity state of the storage battery is estimated according to the number of parking days. When the number of days exceeds a certain number, the vehicle is awakened to be charged, namely, the power supply is optimally distributed according to the special working condition of vehicle transportation, so that the vehicle cost is reduced.
However, the above method is intended to solve the problem of how to charge the storage battery when the power is fed due to the dark current, and the generation of the dark current is not actually reduced, and the utilization rate of the storage battery cannot be improved.
Disclosure of Invention
In view of the defects in the prior art, an object of the present application is to provide a power distribution system and method, so as to solve the problems that the generation of dark current is not actually reduced and the utilization rate of a storage battery cannot be improved in the related art.
A first aspect of the present application provides a power distribution system, comprising:
the power distribution unit is used for distributing power to the unsafe equipment meeting the preset conditions; the preset conditions include: after the whole vehicle is powered off, the equipment has passive communication requirements and has no active wake-up network function; dark current exists in the equipment, and the dark current consumption of the vehicle can be influenced or triggered under the abnormal condition; the self power of the equipment does not exceed the bearing capacity of the power distribution unit;
a first controller for generating a first control signal upon receiving a vehicle-off signal and transmitting the first control signal to the power distribution unit;
the power distribution unit is used for responding to the first control signal and stopping supplying power to the non-safety equipment;
the power distribution unit comprises a first fuse, and the first fuse is connected in series between a power supply and an unsafe device; and when the first safety is removed, the power supply is disconnected from the unsafe equipment.
In some embodiments, the first controller is further configured to generate a second control signal when receiving a vehicle power-on signal, and transmit the second control signal to the power distribution unit;
the power distribution unit is used for responding the second control signal to supply power to the non-safety equipment.
In some embodiments, the power distribution unit includes a relay, a first control terminal and a first contact of the relay are respectively connected to a power supply, a second control terminal of the relay is connected to the first controller, and a second contact of the relay is respectively connected to each non-safety device;
the relay is configured to open in response to the first control signal and close in response to the second control signal.
In some embodiments, the power distribution unit further includes a plurality of second fuses, and each of the second fuses is respectively connected in series between the second contact of the relay and a non-safety device.
In some embodiments, the power distribution unit further comprises a third fuse connected in series between the power source and the first control terminal of the relay.
In some embodiments, the system further includes a second controller, where the second controller is configured to monitor a network segment formed by each piece of non-safety equipment, and perform dark current abnormal reminding when the network segment is abnormally awakened by the non-safety equipment and does not sleep for a preset time after receiving an electrical signal from a vehicle.
In some embodiments, the non-safety equipment comprises a 360-degree look-around system, an air conditioning system, a meter and an on-board host.
The second aspect of the present application provides a power distribution method based on the above power distribution system, which includes the steps of:
when the first controller receives a vehicle off electric signal, generating a first control signal and transmitting the first control signal to the power distribution unit;
the power supply distribution unit responds to the first control signal to stop supplying power to the non-safety equipment;
and when the vehicle is in a transportation state, removing the first insurance, and cutting off the connection of the power supply and the unsafe equipment.
In some embodiments, when the first controller receives a vehicle power-on signal, a second control signal is generated and transmitted to the power distribution unit;
the power distribution unit responds to the second control signal to supply power to the non-safety equipment.
In some embodiments, the system further includes a second controller, where the second controller is configured to monitor a network segment formed by the non-secure devices;
and after the second controller receives the vehicle power-off signal, if the vehicle power-off signal is abnormally awakened by the non-safety equipment and does not sleep for the preset time, the dark current abnormity is reminded.
The beneficial effect that technical scheme that this application provided brought includes:
according to the power distribution system and the power distribution method, the first controller can generate a first control signal when receiving the vehicle off-electricity signal and transmit the first control signal to the power distribution unit, and the power distribution unit can stop supplying power to the non-safety equipment after receiving the first control signal; the non-safety equipment has a passive communication requirement after the whole vehicle is powered off and has no active network awakening function, dark current exists in the non-safety equipment, dark current consumption of the vehicle can be influenced or triggered under abnormal conditions, and the power of the non-safety equipment does not exceed the bearing capacity of the power distribution unit; the non-safety equipment meeting the preset conditions is subjected to power distribution management through the power distribution unit, so that the reduction of dark current is effectively guaranteed in the process of parking or transporting the vehicle, the available electric quantity of the storage battery is kept, and the use and transportation cost of the vehicle is saved.
Drawings
In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings needed to be used in the description of the embodiments are briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present application, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without creative efforts.
FIG. 1 is a schematic diagram of a power distribution unit in an embodiment of the present application;
FIG. 2 is a schematic connection diagram illustrating a power distribution unit supplying power to an unsecure device according to an embodiment of the present disclosure;
FIG. 3 is a schematic diagram illustrating the first fuse removed according to an embodiment of the present application;
fig. 4 is a flowchart of a power distribution method in the embodiment of the present application.
Reference numerals:
1. a first controller; 2. a relay; 3. a first insurance; 4. a second insurance; 5. and (5) third insurance.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is described in further detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention. In addition, the technical features involved in the embodiments of the present invention described below may be combined with each other as long as they do not conflict with each other.
The embodiment of the application provides a power distribution system, which can solve the problems that the generation of dark current is not actually reduced and the utilization rate of a storage battery cannot be improved in the related art.
As shown in fig. 1, the power distribution system of the embodiment of the present application includes a power distribution unit and a first controller 1.
The power distribution unit is used for distributing power to the non-safety equipment meeting the preset conditions.
The preset conditions comprise the following three points: after the whole vehicle is powered off, the equipment has passive communication requirements and has no active wake-up network function; dark current exists in the equipment, and the dark current consumption of the vehicle can be influenced or triggered under the abnormal condition; the power of the device does not exceed the carrying capacity of the power distribution unit. Therefore, the device in the vehicle that satisfies the preset condition is the unsafe device in this embodiment.
The first controller 1 is configured to generate a first control signal when receiving a vehicle off signal, and transmit the first control signal to the power distribution unit.
The power distribution unit is used for responding to the first control signal and stopping supplying power to the non-safety equipment.
The power distribution unit comprises a first fuse, and the first fuse is connected in series between a power supply and an unsafe device. When the first security is removed, the power supply can be disconnected from the non-secure device.
In the power distribution system of the embodiment, the first controller 1 can generate the first control signal when receiving the vehicle off-signal and transmit the first control signal to the power distribution unit, and the power distribution unit can stop supplying power to the non-safety equipment after receiving the first control signal; the non-safety equipment has a passive communication requirement after the whole vehicle is powered off and has no active network awakening function, dark current exists in the non-safety equipment, dark current consumption of the vehicle can be influenced or triggered under abnormal conditions, and the power of the non-safety equipment does not exceed the bearing capacity of the power distribution unit; therefore, the non-safety equipment meeting the preset conditions is subjected to power distribution management through the power distribution unit, so that the reduction of dark current can be effectively guaranteed in the process of parking or transporting the vehicle, the available electric quantity of the storage battery is kept, and the use and transportation cost of the vehicle is saved.
As shown in fig. 2, the first controller 1 is further configured to generate a second control signal when receiving a vehicle power-on signal, and transmit the second control signal to the power distribution unit.
The power distribution unit is used for responding the second control signal to supply power to the non-safety equipment. At this time, the above-mentioned unsafe equipment can work normally when power is supplied.
In addition to the above embodiments, in this embodiment, the power distribution unit includes a relay 2, a first control terminal and a first contact of the relay 2 are respectively connected to a power supply, a second control terminal of the relay 2 is connected to the first controller 1, and a second contact of the relay 2 is respectively connected to each non-safety device.
In this embodiment, the power supply is a whole vehicle 12V constant power supply, that is, a B + power supply, and the whole vehicle 12V constant power supply is used as a primary distribution power supply. Preferably, the power supply (secondary distribution) of the non-safety equipment meeting the preset conditions is controlled by the relay 2 through setting secondary power distribution to the B + power supply of the whole vehicle, namely under the B + power supply (primary distribution).
The relay 2 is configured to open in response to the first control signal and close in response to the second control signal. When the relay 2 is disconnected in response to the first control signal, the power supply can be stopped to supply power to each piece of non-safety equipment, so that the power supply of each piece of non-safety equipment is stopped; when the relay 2 is closed in response to the second control signal, the power supply can be used for supplying power to each piece of unsafe equipment, so that each piece of unsafe equipment can be supplied with power and works normally.
Specifically, the relay 2, also called relay, is an electronic control device, and the relay 2 has a control system (also called input loop) and a controlled system (also called output loop), and is generally applied to an automatic control circuit. The relay 2 is actually an automatic switch that uses a smaller current to control a larger current. Therefore, the relay 2 can play the roles of automatic adjustment, safety protection, circuit conversion and the like in the circuit. In this embodiment, the relay coil is represented by a long box symbol in the circuit, and the relay contacts are represented by a set of contact symbols.
As shown in fig. 3, the first fuse 3 is connected in series between the power source and the first contact of the relay 2. When the first fuse 3 is removed, the connection between the relay 2 and the power source is cut off.
Specifically, when the vehicle is in a storage transportation mode, the first insurance 3 is removed to disconnect the non-safety equipment from the power supply, so that the dark current can be effectively reduced when the vehicle is delivered to a customer, and the first insurance 3 is reinstalled to realize normal power supply when the vehicle is delivered to the customer.
In addition to the above embodiments, in this embodiment, the power distribution unit further includes a plurality of second fuses 4, where the number of the second fuses 4 is the same as the number of the non-safety devices. Each of the second fuses 4 is connected in series between the second contact of the relay 2 and an unsafe-type device.
Preferably, the power distribution unit further comprises a third fuse 5, and the third fuse 5 is connected in series between the power supply and the first control terminal of the relay 2.
In this embodiment, the first insurance 3 and the second insurance 4 may belong to a first-level insurance, and the plurality of second insurance 4 may belong to a second-level insurance. Alternatively, when the third fuse 5 is removed, the connection between the relay 2 and the power source may be cut off.
In this embodiment, it is considered that the common power is distributed to the unsafe devices with dark current, and the power on/off is controlled by a primary fuse. Aiming at non-safety equipment without communication requirements after power off, the controlled B + power is controlled and managed, so that the dark current is effectively reduced in the vehicle transportation or long-time storage process, the available electric quantity of the storage battery is kept, and the vehicle transportation and use cost is saved. The power supply of the unsafe equipment meeting the preset conditions is disconnected from the source of the dark current, so that the storage battery is protected from the angle of preventing the dark current from generating, and the feed of the storage battery is avoided.
On the basis of the foregoing embodiment, in this embodiment, the power distribution system further includes a second controller, where the second controller is configured to monitor a network segment formed by each piece of non-safety equipment, and after receiving an electrical signal from a vehicle, if the network segment is abnormally awakened by the non-safety equipment and does not sleep for a preset time, the second controller is further configured to perform dark current abnormal alert. At this time, the second controller does not sleep for the preset time, which indicates that the insecure device does not sleep for the preset time.
Specifically, the power distribution system can also realize a network monitoring mechanism. A new network segment is established by the non-safety equipment meeting the preset conditions, and then after the whole vehicle is powered off, the new network segment formed by the non-safety equipment is monitored by a second controller serving as a network segment terminal controller. After the second controller receives the vehicle power-off signal and powers off, if the second controller is abnormally awakened by the non-safety equipment and does not sleep for the duration of the preset time, the second controller can remind a user of abnormal dark current through the short message and ask for timely maintenance, so that the reminding of the abnormal dark current is realized.
Alternatively, the second controller and the first controller 1 may be the same controller or different controllers.
Preferably, the non-safety equipment comprises a 360-degree around-the-sight system, an air conditioning system, a meter, a vehicle-mounted host and the like. Namely, the power of the 360-degree around-the-sight system, the air conditioning system, the instrument, the vehicle-mounted host and other equipment does not exceed the bearing capacity of the relay 2, the whole vehicle has a passive communication requirement after being powered off, and has no active network awakening function, dark current exists in the whole vehicle, and the dark current consumption of the vehicle can be influenced or triggered under abnormal conditions.
In this embodiment, a new network segment is obtained by building the 360-degree around-view system, the air conditioning system, the instrument, the vehicle-mounted host and other non-safety devices, and the new network segment is connected with the second contact of the relay 2 through a second fuse 4, so that the relay 2 is controlled by the power supply of the non-safety devices in the on-off mode of the relay 2.
Optionally, the 360-degree all-around viewing system includes 4 to 8 wide-angle cameras installed around the vehicle to cover all the viewing ranges around the vehicle, and processes the multiple video images collected at the same time into a 360-degree top view of the vehicle around the vehicle, and finally displays the images on a screen of the center console, so that the driver can clearly see whether obstacles exist around the vehicle, know the relative position and distance of the obstacles, and help the driver to park the vehicle easily. Therefore, the 360-degree around-looking system is used for image acquisition, so that the method is very visual, no blind spot exists, the condition that a driver can control the vehicle through a complex road surface or park in the vehicle easily can be improved, and the occurrence of accidents such as vehicle scratch, collision, collapse and the like can be effectively reduced.
The vehicle-mounted host is the core part of the vehicle-mounted audio-video system, and the main function of the vehicle-mounted host is to play a sound source, which is equivalent to a video disc player of a home theater. In order to be more suitable for the characteristic of narrow space in an automobile, the vehicle-mounted host often has certain power amplification capacity.
In this embodiment, assuming that the rated capacity of the automobile storage battery is C0(Ah), the dark current of the entire automobile is iq (ma), and under the condition of not disconnecting the negative electrode of the storage battery, the calculation formula of the number of days that the automobile can be left standing to ensure the starting of the automobile is as follows:
wherein, T (d) is the vehicle standing time; c1(Ah) is the battery capacity at the time when the vehicle starts to stand; c2(Ah) is the minimum charge of the storage battery for ensuring the starting of the vehicle; cz (Ah) is the self-discharge electric quantity of the storage battery in one day, and Cz is C0/1000.
Generally, C0 with the capacity C1 of the storage battery of 95% is selected when the vehicle is initially placed still, and the minimum storage battery capacity C2 for starting the vehicle is ensured to be C0 with 55%, so that the following steps can be obtained:
therefore, on the premise that the electric quantity of the storage battery is certain, the standing time of the automobile during placement or transportation is related to the magnitude of the dark current of the whole automobile; namely, controlling the dark current of the whole vehicle is the key for ensuring the starting capability of the vehicle in a storage state.
The system of this embodiment carries out power distribution management to the equipment that has dark current, has guaranteed the battery and has parked and the start-up electric quantity of transportation in the vehicle, has improved the utilization ratio of battery, saves vehicle transportation cost, not only need not to turn off switch element through controller software compulsory, still guarantees dark current control's reliability through using hardware and software dual protection.
As shown in fig. 4, an embodiment of the present application further provides a power distribution method based on the power distribution system, where the power distribution system includes a power distribution unit and a first controller 1. The power distribution method specifically comprises the following steps:
s1, when a first controller 1 receives a vehicle off-signal, a first control signal is generated and transmitted to a power distribution unit.
And S2, the power distribution unit responds to the first control signal to stop supplying power to the non-safety equipment.
And S3, when the vehicle is in a transportation state, removing the first insurance, and cutting off the connection between the power supply and the non-safety equipment.
On the basis of the above embodiment, the power distribution method of the embodiment further includes the following steps:
and S4, when the first controller 1 receives a vehicle electrifying signal, generating a second control signal and transmitting the second control signal to a power distribution unit.
And S5, the power distribution unit responds to the second control signal to supply power to the non-safety equipment.
Wherein, the preset conditions comprise the following three points:
1. after the whole vehicle is powered off, the vehicle has a passive communication requirement and no active awakening network function, and only makes passive response and non-active awakening when needed;
2. dark current exists in the vehicle, and the consumption of the dark current of the vehicle can be influenced or triggered under abnormal conditions;
3. the power of the equipment does not exceed the bearing capacity of the relay 2.
After determining the devices meeting the above three conditions, a dedicated relay 2 may be provided in the normal circuit in the fuse box during the vehicle power distribution timing, and the coil end of the relay 2 is controlled by a first controller 1, where the first controller 1 includes: after the whole vehicle is powered off, the active communication requirement is met, and the network function can be actively awakened. The switch output end of the relay 2 controls the relay 2 on the power supply of the unsafe equipment which needs to be subjected to dark current control; therefore, the secondary power supply distribution setting is completed, and the non-safety equipment can be managed and controlled according to different power utilization scenes.
Further, the power distribution unit further includes a relay 2, a second fuse 4, and a third fuse 5.
The first control end of the coil of the relay 2 and the first contact of the relay 2 are respectively connected with a power supply, the second control end of the coil of the relay 2 is connected with the first controller 1, and the second contact of the relay 2 is respectively connected with each non-safety device. In this embodiment, the power supply is a 12V constant power supply of the whole vehicle, i.e., a B + power supply.
The first fuse 3 is connected in series between a power supply and a first contact of the relay 2, and when the first fuse 3 is removed, the connection between the relay 2 and a 12V normal power supply can be cut off; when the first fuse 3 is installed back, the relay 2 can be connected to a 12V constant power supply.
The number of the second fuses 4 is the same as the number of the non-safety devices. A plurality of the second fuses 4 are connected in parallel, and each of the second fuses 4 is connected in series between the second contact of the relay 2 and an unsafe equipment.
The third fuse 5 is connected in series between the power supply and the first control terminal of the relay 2. The first insurance 3 and the second insurance 4 may belong to a first-level insurance, and the plurality of second insurance 4 may belong to a second-level insurance. Alternatively, when the third fuse 5 is removed, the connection between the relay 2 and the 12V normal power source may be cut off.
When the relay 2 is turned off in response to the first control signal, the 12V normal power supply can be stopped to supply power to each piece of unsafe equipment, so that each piece of unsafe equipment stops supplying power; when the relay 2 is closed in response to the second control signal, the power can be supplied to each non-safety device through the 12V normal power supply, so that each non-safety device can be supplied with power and normally works.
On the basis of the foregoing embodiment, in this embodiment, the power distribution system further includes a second controller, where the second controller is configured to monitor a network segment formed by each piece of insecure equipment.
And after the second controller receives the vehicle power-off signal, if the vehicle power-off signal is abnormally awakened by the non-safety equipment and does not sleep for the preset time, the dark current abnormity is reminded.
Optionally, the preset time is set according to vehicle parameters of the vehicle.
The following scenario is taken as an example to explain the power distribution method of the present embodiment:
when the vehicle is electrified, the first controller 1 receives the vehicle electrifying signal and then generates a second control signal, so that the pin of the controller is pulled down, and the control end of the relay 2 forms a loop, so that the first contact and the second contact of the relay 2 are attracted, and a power supply is provided for each piece of non-safety equipment. The current flows to B + power → first fuse 3 → relay 2 → each second fuse 4 → each non-safety device.
When the vehicle is powered off, if no communication requirement and network awakening exist, the first controller 1 receives the vehicle power-off signal and then generates a first control signal, so that the pin of the controller is pulled high, and no current exists at the control end of the relay 2, so that the first contact and the second contact of the relay 2 are disconnected, and the relay 2 is cut off to output power for each piece of non-safety equipment.
When some non-safety equipment is awakened passively, the first controller 1 controls the relay 2 to be powered on to provide power for the non-safety equipment, namely the pin of the controller is pulled low, the first contact and the second contact of the relay 2 are controlled to be powered on in an attracting mode, and at the moment, the current flows to the power B + → the first insurance 3 → the relay 2 → the second insurance 4 → the non-safety equipment.
Specifically, when the vehicle is powered off and then the vehicle door is opened, the first controller 1 actively wakes up the instrument, at the moment, the first controller 1 controls the relay 2 to suck power to the instrument, the instrument is in a passive wake-up state, and the vehicle door is displayed not to be closed.
Specifically, taking the example that the non-safety equipment includes a 360-degree around-the-eye system, an air conditioning system and a meter, the power distribution unit of the embodiment includes one relay 2, one first fuse 3, three second fuses 4 and one third fuse 5.
The first fuse 3 is connected in series between the 12V constant power source and the first contact of the relay 2, and the third fuse 5 is connected in series between the 12V constant power source and the first control end of the relay 2. Among the three second fuses 4, one second fuse 4 is connected in series between the second contact of the relay 2 and the 360-degree looking system, one second fuse 4 is connected in series between the second contact of the relay 2 and the air conditioning system, and the last second fuse 4 is connected in series between the second contact of the relay 2 and the instrument.
The power distribution method of the embodiment specifically includes the following steps:
A1. when the first controller 1 receives the vehicle-off electric signal, it generates a first control signal and transmits the first control signal to the relay 2 of the power distribution unit.
A2. The relay 2 is turned off in response to the first control signal and stops supplying power to the 360-degree surround view system, the air conditioning system, and the instrument.
When the vehicle is powered off, the first controller 1 receives the vehicle power-off signal and then generates a first control signal, so that the pin of the controller is pulled high, and no current exists at the control end of the relay 2, so that the first contact and the second contact of the relay 2 are disconnected, and the relay 2 is cut off to be a 360-degree power output source of the surround view system, the air conditioning system and the instrument.
A3. When the first controller 1 receives the vehicle power-on signal, it generates a second control signal and transmits the second control signal to the relay 2 of the power distribution unit.
A4. The relay 2 is turned off in response to the second control signal to supply power to the non-safety device.
When the vehicle is powered on, the first controller 1 receives a vehicle power-on signal and then generates a second control signal, so that the pin of the controller is pulled down, and the control end of the relay 2 forms a loop, so that the first contact and the second contact of the relay 2 are attracted, and power is supplied to the 360-degree panoramic system, the air conditioning system and the instrument.
Through the control of the relay 2, the continuous consumption of the power supply of the non-safety equipment under the non-awakening scene can be effectively reduced.
The power distribution method in the embodiment is suitable for the power distribution systems, and for different power utilization situations, from the perspective of power distribution, two-stage power distribution is set for each piece of unsafe equipment with dark current, the first-stage insurance ensures that the dark current of the vehicle in storage and transportation is effectively reduced, the second-stage insurance ensures that the dark current after power-off is effectively reduced, and a two-stage power distribution scheme is utilized to control a normal power supply so as to limit the dark current of the normal power equipment during the power-off of the whole vehicle, namely, the battery feeding caused by the dark current is avoided from the source, the utilization rate of the battery is improved, and the transportation cost of the vehicle is saved; in addition, after the non-safety equipment is awakened continuously and abnormally, the user can be informed of timely maintenance through a short message reminding mode.
In the description of the present application, it should be noted that the terms "upper", "lower", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, which are only for convenience in describing the present application and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed in a specific orientation, and operate, and thus, should not be construed as limiting the present application. Unless expressly stated or limited otherwise, the terms "mounted," "connected," and "connected" are intended to be inclusive and mean, for example, that they may be fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present application can be understood by those of ordinary skill in the art as appropriate.
It is noted that, in the present application, relational terms such as "first" and "second", and the like, are used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising an … …" does not exclude the presence of other identical elements in a process, method, article, or apparatus that comprises the element.
The foregoing are merely exemplary embodiments of the present application and are presented to enable those skilled in the art to understand and practice the present application. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the application. Thus, the present application is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.
Claims (10)
1. A power distribution system, comprising:
the power distribution unit is used for distributing power to the unsafe equipment meeting the preset conditions; the preset conditions include: after the whole vehicle is powered off, the equipment has passive communication requirements and has no active wake-up network function; dark current exists in the equipment, and the dark current consumption of the vehicle can be influenced or triggered under the abnormal condition; the self power of the equipment does not exceed the bearing capacity of the power distribution unit;
a first controller for generating a first control signal upon receiving a vehicle-off electric signal and transmitting the first control signal to the power distribution unit;
the power distribution unit is used for responding to the first control signal and stopping supplying power to the non-safety equipment;
the power distribution unit comprises a first fuse which is connected between a power supply and an unsafe device in series; and when the first fuse is removed, cutting off the connection between the power supply and the non-safety equipment.
2. The power distribution system of claim 1, wherein: the first controller is further used for generating a second control signal when receiving a vehicle power-on signal and transmitting the second control signal to the power distribution unit;
the power distribution unit is used for responding to the second control signal to supply power to the non-safety equipment.
3. The power distribution system of claim 2, wherein: the power distribution unit comprises a relay, a first control end and a first contact of the relay are respectively connected with a power supply, a second control end of the relay is connected with the first controller, and a second contact of the relay is respectively connected with each non-safety device;
the relay is configured to open in response to the first control signal and close in response to the second control signal.
4. The power distribution system of claim 3, wherein: the power distribution unit further comprises a plurality of second fuses, and each second fuse is respectively connected between the second contact of the relay and one non-safety device in series.
5. The power distribution system of claim 3, wherein: the power distribution unit further comprises a third fuse connected in series between the power source and the first control terminal of the relay.
6. The power distribution system of claim 1, wherein: the system further comprises a second controller, wherein the second controller is used for monitoring the network segments formed by the non-safety devices, and after receiving the electric signals under the vehicle, if the network segments are abnormally awakened by the non-safety devices and do not sleep for the preset time, the second controller is used for carrying out dark current abnormal reminding.
7. The power distribution system of claim 1, wherein: the non-safety equipment comprises a 360-degree look-around system, an air conditioning system, an instrument and a vehicle-mounted host.
8. A power distribution method based on the power distribution system of claim 1, comprising the steps of:
when the first controller receives a vehicle off electric signal, generating a first control signal and transmitting the first control signal to the power distribution unit;
the power supply distribution unit responds to the first control signal to stop supplying power to the non-safety equipment;
and when the vehicle is in a transportation state, removing the first insurance, and cutting off the connection of the power supply and the unsafe equipment.
9. The power distribution method of claim 8, wherein:
when the first controller receives a vehicle power-on signal, generating a second control signal and transmitting the second control signal to a power distribution unit;
and the power distribution unit responds to the second control signal to supply power to the non-safety equipment.
10. The power distribution method of claim 8, wherein: the system also comprises a second controller, wherein the second controller is used for monitoring the network segments formed by the non-safety devices;
and after the second controller receives the vehicle power-off signal, if the vehicle power-off signal is abnormally awakened by the non-safety equipment and does not sleep for the preset time, the dark current abnormity is reminded.
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| CN202111539462.7A CN114312629A (en) | 2021-12-15 | 2021-12-15 | Power distribution system and method |
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| CN202111539462.7A CN114312629A (en) | 2021-12-15 | 2021-12-15 | Power distribution system and method |
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