It should be noted that the direct current high-low voltage bidirectional conversion controller of the vehicle receives the first required voltage message and the first required power message fed back by the vehicle control unit through the CAN communication network.

Step S203, obtaining a low-voltage working requirement of the low-voltage module according to the first required voltage message and the first required power message.

It can be understood that the dc high-low voltage bidirectional conversion controller receives the message of the required voltage and the required power fed back by the vehicle control unit, identifies the low-voltage operation requirement of the low-voltage module, and ensures the accuracy of the operation of the first port during voltage conversion.

Further, after step S20, the method further includes:

receiving the working state of the first port fed back by the vehicle control unit, and judging whether the working state of the first port is consistent with the low-voltage working demand state; if the working state of the first port is inconsistent with the low-voltage working demand state, a first fault code is sent to the vehicle control unit, so that the vehicle control unit starts a self-protection mode.

It should be noted that the operating state of the first port refers to a value of the output voltage and a value of the output power of the first port.

It should be understood that, the dc high-low voltage bidirectional converter controller determines whether the voltage value and the power value are consistent with those required by the low-voltage module when the vehicle control unit normally works by receiving the first port output voltage value and the output power value fed back by the vehicle control unit.

It should be noted that the first fault code refers to code information reflected when the operating state of the first port is inconsistent with the low-voltage operating demand state.

It can be understood that, the dc high-low voltage bidirectional converter controller checks the operating state of the first port by receiving the output voltage value and the output power value of the first port fed back by the vehicle controller, and determines whether to enable the vehicle controller to start the self-protection mode, so as to not only further ensure the accuracy of the operation of the first port when supplying power to the low-voltage module, but also ensure the safety of the vehicle operation.

Further, before step S40, the method further includes:

sending the starting state of the second port to the upper controller, so that the upper controller feeds back a second required voltage message and a second required power message of the upper controller according to the starting state; receiving a second required voltage message and a second required power message fed back by the upper controller; and obtaining the additional work requirement of the upper-mounted controller according to the second required voltage message and the second required power message.

It should be noted that the activation state of the second port refers to a state in which the second port is already opened.

It should be understood that the second voltage demand message and the second power demand message of the onboard controller refer to the message content of a CAN signal matrix defined in a CAN communication network of the vehicle, and the voltage and power demands required by the onboard controller to enable the onboard part of the vehicle to work normally are converted into the second voltage demand message and the second power demand message.

It should be noted that the direct current high-low voltage bidirectional conversion controller of the vehicle receives the second required voltage message and the second required power message fed back by the upper-mounted controller through the CAN communication network.

It can be understood that the dc high-low voltage bidirectional conversion controller receives the messages of the required voltage and the required power fed back by the upper controller, identifies the additional working requirement of the upper controller, and ensures the working accuracy of the second port during voltage conversion.

Further, after step S40, the method further includes:

receiving the working state of the second port fed back by the upper controller, and judging whether the working state of the second port is consistent with the additional working demand state; and if the working state of the second port is inconsistent with the additional working demand state, sending a second fault code to the upper controller so that the upper controller starts a self-protection mode.

It should be noted that: it should be noted that the operating state of the second port refers to a value of the output voltage and a value of the output power of the first port.

It can be understood that, the dc high-low voltage bidirectional converter controller determines whether the voltage value and the power value required by the upper-mounted controller to enable the vehicle upper-mounted portion to operate normally are consistent by receiving the second port output voltage value and the output power value fed back by the upper-mounted controller.

It should be noted that the second fault code refers to code information reflected when the operating status of the second port is inconsistent with the additional operating requirement status.

It can be understood that, the dc high-low voltage bidirectional converter controller checks the operating state of the second port by receiving the output voltage value and the output power value of the second port fed back by the upper controller, and determines whether to enable the upper controller to start the self-protection mode, so as to not only further ensure the accuracy of the operation of the first port when supplying power to the upper controller, but also ensure the safety of the vehicle operation.

Further, before step S30, the method further includes: judging whether an activation instruction of the vehicle control unit is received or not; and if the activation instruction of the vehicle control unit is received, activating a second port.

It should be noted that the activation instruction of the vehicle control unit refers to a power-on instruction sent by the vehicle control unit and received before the second port starts to operate.

It can be understood that, before starting the second port, it is determined whether the second port has been powered on and activated, so as to ensure the normal output operation of the second port.

In this embodiment, the starting state of the first port is sent to the vehicle controller, so that the vehicle controller feeds back a first required voltage message and a first required power message of the low-voltage module according to the starting state; receiving a first required voltage message and a first required power message fed back by the vehicle control unit; and obtaining the low-voltage working requirement of the low-voltage module according to the first demand voltage message and the first demand power message. Receiving the working state of the first port fed back by the vehicle control unit, and judging whether the working state of the first port is consistent with the low-voltage working demand state; if the working state of the first port is inconsistent with the low-voltage working demand state, a first fault code is sent to the vehicle control unit, so that the vehicle control unit starts a self-protection mode. By the mode, the accuracy of the output port of the direct-current high-low voltage bidirectional converter during voltage conversion work can be guaranteed, whether the working state of the output port is consistent with the working requirement or not is checked in real time, whether the controller is enabled to start a self-protection mode or not is selected, and the safety of a vehicle during running is guaranteed.

In addition, referring to fig. 5, an embodiment of the present invention further provides an apparatus for on-demand power supply of a vehicle low-voltage system, where the apparatus for on-demand power supply of a vehicle low-voltage system includes:

the startingmodule 10 is configured to receive a starting instruction of a vehicle controller on a vehicle, and start a first port according to the starting instruction;

and thepower supply module 20 is used for acquiring the low-voltage working requirement of the low-voltage module on the vehicle and controlling the first port to supply power according to the low-voltage working requirement.

The startingmodule 10 is further configured to receive a working instruction of the onboard controller of the vehicle, and start the second port according to the working instruction.

Thepower supply module 20 is further configured to obtain an additional work requirement of the upper controller, and control the second port to supply power according to the additional work requirement of the upper controller.

In an embodiment, thepower supply module 20 is further configured to send a start state of the first port to the vehicle control unit, so that the vehicle control unit feeds back a first required voltage message and a first required power message of the low-voltage module according to the start state;

In an embodiment, thepower supply module 20 is further configured to receive the working state of the first port fed back by the vehicle control unit, and determine whether the working state of the first port is consistent with the low-voltage working demand state;

In an embodiment, thepower supply module 20 is further configured to send a starting state of the second port to the upper controller, so that the upper controller feeds back a second required voltage packet and a second required power packet of the upper controller according to the starting state;

In an embodiment, thepower supply module 20 is further configured to receive the working state of the second port fed back by the upper-mounted controller, and determine whether the working state of the second port is consistent with the additional working demand state;

In an embodiment, the startingmodule 10 is further configured to determine whether an activation instruction of the vehicle control unit is received;

In an embodiment, the startingmodule 10 is further configured to receive a start-up instruction of a vehicle control unit on a vehicle, monitor a first port according to the start-up instruction, and send temperature information of the first port to the vehicle control unit, so that the vehicle control unit determines whether the temperature information of the first port is within a normal range, and if the temperature information of the first port is within the normal range, feeds back a normal detection result of the first port;

and starting the first port according to the detection result.

Furthermore, an embodiment of the present invention further provides a storage medium, where a vehicle low-voltage system on-demand power supply program is stored on the storage medium, and the vehicle low-voltage system on-demand power supply program, when executed by a processor, implements the steps of the vehicle low-voltage system on-demand power supply method as described above.

Since the storage medium adopts all technical solutions of all the embodiments, at least all the beneficial effects brought by the technical solutions of the embodiments are achieved, and no further description is given here.

It should be noted that the above-described work flows are only exemplary, and do not limit the scope of the present invention, and in practical applications, a person skilled in the art may select some or all of them to achieve the purpose of the solution of the embodiment according to actual needs, and the present invention is not limited herein.

In addition, the technical details that are not described in detail in this embodiment can be referred to the on-demand power supply method of the vehicle low-voltage system provided by any embodiment of the present invention, and are not described herein again.

Further, it is to be noted that, in this document, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or system 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 system. Without further limitation, an element defined by the phrase "comprising an … …" does not exclude the presence of other like elements in a process, method, article, or system that comprises the element.

The above-mentioned serial numbers of the embodiments of the present invention are merely for description and do not represent the merits of the embodiments.

Through the above description of the embodiments, those skilled in the art will clearly understand that the method of the above embodiments can be implemented by software plus a necessary general hardware platform, and certainly can also be implemented by hardware, but in many cases, the former is a better implementation manner. Based on such understanding, the technical solution of the present invention or portions thereof that contribute to the prior art may be embodied in the form of a software product, where the computer software product is stored in a storage medium (e.g. Read Only Memory (ROM)/RAM, magnetic disk, optical disk), and includes several instructions for enabling a terminal device (e.g. a mobile phone, a computer, a server, or a network device) to execute the method according to the embodiments of the present invention.

The above description is only a preferred embodiment of the present invention, and not intended to limit the scope of the present invention, and all modifications of equivalent structures and equivalent processes, which are made by using the contents of the present specification and the accompanying drawings, or directly or indirectly applied to other related technical fields, are included in the scope of the present invention.

Claims

1. A vehicle low-voltage system on-demand power supply method is characterized by comprising the following steps:

2. The method of claim 1, wherein prior to obtaining a low voltage operating demand of a low voltage module on the vehicle and controlling the first port to provide power according to the low voltage operating demand, further comprising:

3. The method of claim 1, wherein after obtaining a low voltage operating demand of a low voltage module on the vehicle and controlling the first port to supply power according to the low voltage operating demand, further comprising:

4. The method of claim 1, wherein before obtaining the additional operational requirement of the on-board controller and controlling the second port to supply power according to the additional operational requirement of the on-board controller, the method further comprises:

5. The method of claim 1, wherein after obtaining the additional operational requirement of the on-board controller and controlling the second port to supply power according to the additional operational requirement of the on-board controller, the method further comprises:

6. The method of any of claims 1-5, wherein the receiving an operating command for the onboard vehicle controller, prior to activating the second port based on the operating command, further comprises:

7. The method according to any one of claims 1 to 5, wherein the receiving a boot instruction of a vehicle control unit on a vehicle, and starting the first port according to the boot instruction comprises:

and starting the first port according to the detection result.

8. A vehicle low voltage system on-demand power supply apparatus, characterized in that the vehicle low voltage system on-demand power supply apparatus comprises:

9. An on-demand power supply apparatus for a low voltage system of a vehicle, the apparatus comprising: a memory, a processor and a vehicle low voltage system on demand power supply program stored on the memory and executable on the processor, the vehicle low voltage system on demand power supply program being configured to implement the steps of the vehicle low voltage system on demand power supply method as claimed in any one of claims 1 to 7.

10. A storage medium, characterized in that it stores thereon a vehicle low-voltage system on-demand power supply program, which when executed by a processor implements the steps of the vehicle low-voltage system on-demand power supply method according to any one of claims 1 to 7.