CN219192118U - Intelligent power distribution controller for automobile - Google Patents

Abstract

The utility model discloses an intelligent power distribution controller for an automobile, which comprises a shell and a PCBA component arranged in the shell, wherein the PCBA component comprises an MCU, a DCDC power module, an HSD, an eFuse driving chip, a switching value acquisition module, an analog value acquisition module, a CAN communication module and an operational amplifier module, wherein the DCDC power module, the HSD and the eFuse driving chip are respectively connected with the MCU; the output of the eFuse driving chip is connected with the input of the MOSFET, and the output of the MOSFET and the output of the HSD are respectively connected with the high-current wiring terminal and the plug-in unit and are connected with the electric appliance through the high-current wiring terminal and the plug-in unit. According to the utility model, the eFUSE driving chip and the high-side switch driving chip HSD are used for realizing adjustment of the power distribution output of each load and realizing the intelligent power distribution of the whole vehicle; through setting up humidity transducer and temperature sensor, make the controller have vehicle submergence detection function, binding post detection function that becomes flexible.

Description

Intelligent power distribution controller for automobile

Technical Field

The utility model relates to the field of integrated distribution boxes, in particular to an intelligent distribution controller for an automobile.

Background

With the intelligent development of automobiles, more and more electronic control units are in the automobile low-voltage electric system. Each electric control unit needs to provide low-voltage power distribution through the electric box, and meanwhile, the power supply circuit is protected. The traditional electrical box adopts a fuse as a power distribution and protection device, and when the current of a circuit exceeds the rated current of the fuse, the fuse is fused for protection. Along with the increase of the electric control unit, the size of the electric box and the number of fuse circuits are increased, so that the whole car is excessively troublesome to install and wire. The increase of wiring complexity easily causes the trouble again, influences the distribution function of electrical apparatus box.

With the development of electric, intelligent and networking of automobiles, the functions of voltage and current monitoring, fault diagnosis, remote upgrading, storage battery management and the like of a low-voltage system are required to be realized. The whole car generally adopts a power distribution mode of an electric box (primary power distribution) +a car body controller (secondary power distribution). The vehicle body controller is used as a secondary power distribution and is responsible for supplying power to small-current loads, such as lights, doors and windows, wipers, door locks and the like, and the technical scheme adopts HSD (high speed sensor) chips and LSD chips, so that intelligent control functions such as fault diagnosis, voltage and current monitoring and the like can be realized. The electric box is used as primary power distribution and is responsible for supplying power to a heavy current load, such as a vehicle Body Controller (BCM), an electric power steering system (EPS), a whole Vehicle Controller (VCU), a Central Computing Unit (CCU), a cooling fan and the like.

Disclosure of Invention

The utility model aims to solve the technical problem that an intelligent electrical box is needed to replace a traditional fuse box, high-current intelligent power distribution is realized, the intelligent control requirement of the whole automobile is met, and the intelligent power distribution controller for the automobile is provided for solving the problem.

The object of the utility model is achieved in the following way:

the intelligent power distribution controller for the automobile comprises a shell and a PCBA component arranged in the shell, wherein the PCBA component comprises an MCU, a DCDC power module, an HSD, an eFuse driving chip, a switching value acquisition module, an analog value acquisition module, a CAN communication module and an operational amplifier module, wherein the DCDC power module, the HSD and the eFuse driving chip, the switching value acquisition module, the analog value acquisition module, the CAN communication module and the operational amplifier module are respectively connected with the MCU; the output of the eFuse driving chip is connected with the input of the MOSFET, and the output of the MOSFET and the output of the HSD are respectively connected with the high-current wiring terminal and the plug-in unit and are connected with the electric appliance through the high-current wiring terminal and the plug-in unit.

The shell comprises an upper shell and a lower shell, heat dissipation ribs are arranged on the upper shell, a heat conduction pad is arranged between the upper shell and the PCBA component, and a waterproof ventilation valve is arranged on the upper shell.

The upper shell adopts a metal shell.

The CAN communication module adopts a CAN communication chip with a dormancy awakening function.

Humidity sensors are arranged in the shell and outside the shell, and are electrically connected with the MCU.

The controller also comprises an upper shell sealing structure, a lower shell sealing structure and an insert sealing structure; the upper shell and the lower shell are sealed by sealing rings and glue sealing. The upper shell and the lower shell are locked by screws.

The load current detection module is connected with the MCU, and the load current detection module adopts a shot resistor to detect, and signals on the shot resistor are amplified by the operational amplifier and then sent to the MCU for AD conversion.

And the high-current wiring terminal is provided with a temperature sensor, and the temperature sensor is electrically connected with the MCU.

Humidity sensors are respectively arranged in the shell and outside the shell, and are electrically connected with the MCU.

A plurality of temperature sensors are arranged on the PCBA component inside the shell, and the temperature sensors are electrically connected with the MCU.

The utility model has the beneficial effects that: according to the utility model, the eFUSE driving chip and the high-side switch driving chip HSD are used for realizing adjustment of the power distribution output of each load and realizing the intelligent power distribution of the whole vehicle; through setting up humidity transducer and temperature sensor, make the controller have vehicle submergence detection function, binding post detection function that becomes flexible.

Drawings

Fig. 1 is a schematic structural view of the present utility model.

Fig. 2 is a functional block diagram of a PCBA component of the present utility model.

Wherein 1 is an upper shell; 2 is a wiring terminal; the waterproof and breathable printed circuit board assembly is characterized in that the printed circuit board assembly is provided with a wiring terminal cover 3, a waterproof and breathable valve 4, a heat conducting pad 5 and a PCBA assembly 6.

Detailed Description

The utility model will be described in further detail with reference to the drawings and the detailed description.

It should be noted that the following detailed description is exemplary and is intended to provide further explanation of the present application. Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs.

It is noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of example embodiments in accordance with the present application. As used herein, the singular is also intended to include the plural unless the context clearly indicates otherwise, and it is to be understood that the terms "comprises" and/or "comprising" when used in this specification are taken to specify the presence of stated features, steps, operations, devices, components, and/or combinations thereof.

In the present utility model, terms such as "upper", "lower", "left", "right", "front", "rear", "vertical", "horizontal", "side", "bottom", etc. refer to an orientation or a positional relationship based on that shown in the drawings, and are merely relational terms, which are used for convenience in describing structural relationships of various components or elements of the present utility model, and are not meant to designate any component or element of the present utility model, but are not meant to limit the present utility model.

In the present utility model, terms such as "fixedly attached," "connected," "coupled," and the like are to be construed broadly and refer to either a fixed connection or an integral or removable connection; can be directly connected or indirectly connected through an intermediate medium. The specific meaning of the terms in the present utility model can be determined according to circumstances by a person skilled in the relevant art or the art, and is not to be construed as limiting the present utility model.

The intelligent power distribution controller for the automobile comprises a shell and a PCBA component arranged in the shell, wherein the PCBA component comprises an MCU, a DCDC power module, a high-side switch driving chip HSD, an eFuse driving chip, a switching value acquisition module, an analog value acquisition module, a CAN communication module and an operational amplifier module, wherein the DCDC power module, the high-side switch driving chip HSD, the eFuse driving chip, the switching value acquisition module, the analog value acquisition module, the CAN communication module and the operational amplifier module are respectively connected with the MCU; the output of the eFuse driving chip is connected with the input of the MOSFET, and the output of the MOSFET and the output of the HSD are respectively connected with the high-current wiring terminal and are connected with the electric appliance through the high-current wiring terminal.

The MCU adopts an automobile-grade chip which accords with the ISO26262 functional safety requirement.

The shell comprises an upper shell 1 and a lower shell 7, heat dissipation ribs are arranged on the upper shell 1, a heat conduction pad 5 is arranged between the upper shell 1 and a PCBA component 6, and a waterproof breathable valve 4 (or a waterproof breathable film) is arranged on the upper shell. The heat conducting pad 5 is tightly contacted with a heating device on the PCBA, so that a good heat dissipation effect is achieved.

The upper shell adopts a metal shell.

The CAN communication module adopts a CAN communication chip with a dormancy awakening function.

The intelligent power distribution controller has a vehicle soaking detection function, humidity sensors are arranged in the shell and outside the shell, and the humidity sensors are electrically connected with the MCU. MCU periodically detects inside and outside humidity value of casing, when detecting that the controller is intaking, sends the trouble state to whole car CAN bus, carries out emergency operation, if relieve the lock, prevents that the vehicle from intaking after outage, CAN't open the door.

The controller also comprises an upper shell sealing structure, a lower shell sealing structure and an insert sealing structure; the upper shell and the lower shell are sealed by sealing rings and glue sealing. The upper shell and the lower shell are locked by screws. In order to ensure the pressing force of the upper shell and the lower shell on the sealing ring and prevent the stress deformation of the shell, the interval between the screws needs to be controlled, so that the sealing effect is ensured.

The load current detection module is connected with the MCU, and the load current detection module adopts a shot resistor to detect, and signals on the shot resistor are amplified by the operational amplifier and then sent to the MCU for AD conversion. The MCU sends the monitored voltage, current and fault state to the CAN bus of the whole vehicle, so that the MCU is convenient for other electric control units to use.

The intelligent power distribution controller controls the eFUSE driving chip and the HSD through the MCU to realize the adjustment of the power distribution output of each load. MCU accessible CAN bus carries out local upgrade or remote upgrade, has the intelligent power distribution module of OTA function, more is fit for the demand of car networking and intelligent driving.

The intelligent power distribution controller has the power distribution architecture adopting DCDC and storage battery double-circuit redundant power supply design, a MOSFET switch circuit is designed between the DCDC and the storage battery, when the DCDC or the storage battery has a short circuit to ground or an undervoltage fault, the MCU controls the MOSFET switch on the fault side to be disconnected, fault isolation is realized, a power supply circuit which does not generate faults is not affected, and the whole machine meets the functional safety design requirement. The highest ASILD level is supported by the product design.

The intelligent power distribution controller has a binding post looseness detection function, combines realization data, and when the binding post loosens, because contact resistance increases, makes binding post temperature rise very fast, and 20 minutes just can reach the ignition point, causes the vehicle to catch fire. According to the utility model, the temperature sensor is arranged at the outlet of the wiring terminal and is connected with the MCU, the temperature of the wiring terminal is collected, the looseness detection function of the wiring terminal is realized, when the temperature of the wiring terminal is too high, early warning is carried out, the power distribution output is closed, and the ignition of a wire harness is prevented.

The intelligent power distribution controller has over-temperature protection, and the over-temperature protection function is realized by arranging a plurality of temperature detection points (including MCU and MOSFET) inside, arranging a temperature sensor at the temperature detection points, and electrically connecting the temperature sensor with the MCU; when the temperature of the controller is higher than the protection threshold value, the controller is used for reducing the current of some distribution outputs or shutting down the distribution output of some unsafe loads.

The foregoing description is only of the preferred embodiments of the present application and is not intended to limit the same, but rather, various modifications and variations may be made by those skilled in the art. Any modification, equivalent replacement, improvement, etc. made within the spirit and principles of the present application should be included in the protection scope of the present application.

While the foregoing description of the embodiments of the present utility model has been presented in conjunction with the drawings, it should be understood that it is not intended to limit the scope of the utility model, but rather, it is intended to cover all modifications or variations within the scope of the utility model as defined by the claims of the present utility model.

Claims (10)

1. An intelligent power distribution controller for an automobile, which is characterized in that: the intelligent control system comprises a shell and a PCBA component arranged in the shell, wherein the PCBA component comprises an MCU, a DCDC power module, an HSD, an eFuse driving chip, a switching value acquisition module, an analog value acquisition module, a CAN communication module and an operational amplifier module, wherein the DCDC power module, the HSD and the eFuse driving chip are respectively connected with the MCU; the output of the eFuse driving chip is connected with the input of the MOSFET, and the output of the MOSFET and the output of the HSD are respectively connected with the high-current wiring terminal and the plug-in unit and are connected with the electric appliance through the high-current wiring terminal and the plug-in unit.

2. The intelligent power distribution controller for a vehicle according to claim 1, wherein: the shell comprises an upper shell and a lower shell, heat dissipation ribs are arranged on the upper shell, a heat conduction pad is arranged between the upper shell and the PCBA component, and a waterproof ventilation valve is arranged on the upper shell.

3. The intelligent power distribution controller for a vehicle according to claim 2, wherein: the upper shell adopts a metal shell.

4. The intelligent power distribution controller for a vehicle according to claim 1, wherein: the CAN communication module adopts a CAN communication chip with a dormancy awakening function.

5. The intelligent power distribution controller for a vehicle according to claim 1, wherein: humidity sensors are arranged in the shell and outside the shell, and are electrically connected with the MCU.

6. The intelligent power distribution controller for a vehicle according to claim 2, wherein: the controller also comprises an upper shell sealing structure, a lower shell sealing structure and an insert sealing structure; the upper shell and the lower shell are tightly locked by screws, and the upper shell and the lower shell are tightly sealed by sealing rings and glue.

7. The intelligent power distribution controller for a vehicle according to claim 1, wherein: the load current detection module is connected with the MCU, and the load current detection module adopts a shot resistor to detect, and signals on the shot resistor are amplified by the operational amplifier and then sent to the MCU for AD conversion.

8. The intelligent power distribution controller for a vehicle according to claim 1, wherein: and the high-current wiring terminal is provided with a temperature sensor, and the temperature sensor is electrically connected with the MCU.

9. The intelligent power distribution controller for a vehicle according to claim 1, wherein: humidity sensors are respectively arranged in the shell and outside the shell, and are electrically connected with the MCU.

10. The intelligent power distribution controller for a vehicle according to claim 1, wherein: a plurality of temperature sensors are arranged on the PCBA component inside the shell, and the temperature sensors are electrically connected with the MCU.

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