CN109039662B

CN109039662B - Method for controlling energy consumption of whole electric automobile

Info

Publication number: CN109039662B
Application number: CN201810775465.2A
Authority: CN
Inventors: 李亚辉
Original assignee: Suzhou Aipulesi New Energy Power System Technology Co ltd
Current assignee: Suzhou Aipulesi New Energy Power System Technology Co ltd
Priority date: 2018-07-16
Filing date: 2018-07-16
Publication date: 2021-04-16
Anticipated expiration: 2038-07-16
Also published as: CN109039662A

Abstract

The invention discloses a method for controlling the whole energy consumption of an electric automobile, which comprises the following steps: determining each ECU meeting the function requirement according to the function requirement, wherein each ECU comprises a first ECU, a second ECU and an Nth ECU; the first ECU is awakened by a function trigger source and sends a first CANID on the vehicle-mounted bus, the second ECU is awakened by the first CANID and sends a second CANID on the vehicle-mounted bus, and sequentially until the Nth-1 ECU is awakened by the (N-2) th CANID and sends the (N-1) th CANID on the vehicle-mounted bus, the Nth ECU is awakened by the (N-1) th CANID; when the function trigger source disappears, the first ECU stops sending the first CANID and sleeps, the second ECU stops sending the second CANID and sleeps because the first CANID cannot be received, and sequentially till the N-1 st ECU stops sending the N-1 st CANID and sleeps because the N-2 nd CANID cannot be received, and the Nth ECU sleeps because the N-1 st CANID cannot be received. The method ensures that each electric control part of the whole vehicle can consume energy only when having functional requirements, and can not consume energy when having no functional requirements, thereby effectively controlling the energy consumption of the whole vehicle.

Description

Method for controlling energy consumption of whole electric automobile

Technical Field

The invention relates to a vehicle energy consumption control method, in particular to a whole vehicle energy consumption control method of an electric vehicle.

Background

Along with the rapid development of the intellectualization and networking of the electric automobile, the application scene of the electric automobile is continuously expanded, so that the control function of the whole automobile is promoted to be rapidly increased, the electric control parts of the whole automobile are synchronously multiplied, the energy consumption of the whole automobile is increased, the whole energy consumption rate and the driving range of the electric automobile are influenced, and the problem of the energy consumption of the whole automobile caused by the expansion of the function of the whole automobile becomes more and more important.

The traditional energy consumption control strategy of the whole vehicle is generally divided into two types: one is indirect network management, namely: the ECU starts to work when being awakened by a hard wire, and enters the dormancy after an awakening signal disappears, but the complexity of the wiring harness of the whole vehicle is increased by the mode, so that the cost of the whole vehicle is increased; the other is direct network management, which can realize the simultaneous waking at the same sleep or the waking and sleeping at the network division section, and the two control strategies can cause the problem that the energy of the whole vehicle is consumed by each electric control part of the whole vehicle due to no functional requirement.

Disclosure of Invention

Aiming at the defects of the prior art, the invention provides a method for controlling the energy consumption of the whole electric automobile, which solves the problem that different electric control parts of the automobile consume energy when no function is required.

The technical scheme of the invention is as follows: the whole energy consumption control method for the electric automobile comprises the following steps: determining each ECU meeting the function requirement according to the function requirement, wherein each ECU comprises a first ECU, a second ECU and an Nth ECU; the first ECU is awakened by a function trigger source and sends a first CANID on the vehicle-mounted bus, the second ECU is awakened by the first CANID and sends a second CANID on the vehicle-mounted bus, and sequentially until the Nth-1 ECU is awakened by the (N-2) th CANID and sends the (N-1) th CANID on the vehicle-mounted bus, the Nth ECU is awakened by the (N-1) th CANID; when the function trigger source disappears, the first ECU stops sending the first CANID and sleeps, the second ECU stops sending the second CANID and sleeps because the first CANID cannot be received, and sequentially till the N-1 st ECU stops sending the N-1 st CANID and sleeps because the N-2 nd CANID cannot be received, and the Nth ECU sleeps because the N-1 st CANID cannot be received.

Further, when the (N-1) th ECU and the Nth ECU are in different sections of vehicle-mounted buses, the gateway routes the (N-1) th CANID to the vehicle-mounted bus where the Nth ECU is located when the (N-1) th ECU sends the (N-1) th CANID on the vehicle-mounted bus.

Further, the gateway sleeps when the N-1 th CANID is not received.

Furthermore, when the N-I ECU, the N-I +1 ECU to the N-I + J ECU are located in I + J different sections of vehicle-mounted buses, the N-I-1 CANID is routed to the corresponding I + J different sections of vehicle-mounted buses by a gateway, and the N-I ECU, the N-I +1 ECU to the N-I + J ECU are awakened by the N-I-1 CANID, wherein I < 1< N, and J < I.

The technical scheme provided by the invention has the advantages that: through the mode that each ECU is awakened by the corresponding CANID and sends the subsequent CANID, energy consumption of each electric control part of the whole vehicle is guaranteed only when functional requirements exist, energy consumption is avoided when no functional requirements exist, and energy consumption of the whole vehicle is effectively controlled.

Drawings

Fig. 1 is a schematic diagram of a vehicle network topology.

Fig. 2 is a schematic diagram of a method for controlling overall vehicle energy consumption of an electric vehicle in embodiment 1.

Fig. 3 is a schematic diagram of a method for controlling overall energy consumption of an electric vehicle in embodiment 2.

Fig. 4 is a schematic diagram of a method for controlling overall energy consumption of an electric vehicle in embodiment 3.

Detailed Description

The present invention is further described in the following examples, which are intended to be illustrative only and not to be limiting as to the scope of the invention, which is to be given the full breadth of the appended claims and any and all equivalent modifications thereof which would occur to persons skilled in the art upon reading the present specification and which are intended to be within the scope of the present invention as defined in the appended claims.

Referring to fig. 1, the existing vehicle network topology forms are all as shown in the above diagram, and the entire vehicle energy consumption control method of the electric vehicle of the present invention is designed based on the above overall network topology forms, and depends on the following technical conditions in the prior art:

1. each electric control part of the whole vehicle has a direct network management function, and each ECU supports being awakened by a specific CANID;

2. each electric control part of the whole vehicle only sends an event triggering message, each CANID can only be sent by being triggered by each function, and when a certain function is not needed, the relevant CANID also stops sending.

The method comprises the steps of firstly, carrying out Function numbering (Function Number) on each control Function of the whole vehicle, and associating the Number with the CANID, namely adopting different CANIDs for different functions, and only identifying the CANID by an ECU (electronic control unit) related to the Function. The process of the present invention is further illustrated by the following examples.

Referring to fig. 1 and fig. 2, in the method for controlling vehicle energy consumption of an electric vehicle according to the present embodiment, for Function 1, the caidd corresponding to the Function is caidd 11 and caidd 12, and the Function needs to be implemented by operating the ECU11, the ECU12, and the ECU1n together. When the ECU11 receives a trigger source of the function, the ECU11 sends the candid 11 representing the function on the vehicle-mounted bus 1, the ECU12 is set to be awakened by the candid 11, so the ECU12 is awakened and participates in the work, the ECU12 sends the candid 12 on the vehicle-mounted bus, the ECU1n is set to be awakened by the candid 12, so the ECU1n is awakened and participates in the work; since other ECUs are not related to this function, other ECUs are not set to be awakened by candid 11 and candid 12, i.e., other ECUs will not be awakened; when the function trigger source of the ECU11 disappears, the ECU11 stops sending the CANID11 and enters the sleep mode, when the ECU12 cannot receive the CANID11, the ECU 3512 stops sending the CANID12 and enters the sleep mode, and when the ECU1n cannot receive the CANID12, the ECU enters the sleep mode, so that the energy consumption of the whole vehicle is reduced to the minimum.

Referring to fig. 1 and fig. 3, in the method for controlling energy consumption of a whole electric vehicle according to the present embodiment, for Function 2, a caid corresponding to the Function is caid 21, and the Function needs to be implemented by the ECU21, the gateway, and the ECU32 working together, where the gateway only plays a role of routing messages. When ECU21 receives the trigger source of the function, ECU21 sends the caidd 21 representing the function on the vehicle bus 2, since the gateway is set to be awakened by the caidd 21, the gateway will be awakened and route the caidd 21 to the vehicle bus, since ECU32 is set to be awakened by the caidd 21, the ECU32 will be awakened and participate in the work; since other ECUs are not related to this function, other ECUs are not set up to be awakened by the caidd 21, i.e., other ECUs will not be awakened; when the function trigger source of the ECU21 disappears, the ECU21 stops sending the CANID21 on the vehicle-mounted bus 2 and enters the dormancy, when the gateway cannot receive the CANID21, the CANID21 is stopped to be routed to the vehicle-mounted bus, and when the ECU32 cannot receive the CANID21 routed by the gateway, the vehicle enters the dormancy, so that the energy consumption of the whole vehicle is reduced to the minimum.

Referring to fig. 1 and 4, in the method for controlling energy consumption of a whole electric vehicle according to the present embodiment, for Function 3, a caid corresponding to the Function is a caid 31, and the Function needs to be implemented by the ECU12, the gateway, the ECU21, and the ECUn2 working together, where the gateway only plays a role of routing a message. When the ECU12 receives the trigger source of the function, the ECU12 sends the caidd 31 representing the function on the vehicle-mounted bus 1, and since the gateway is set to be awakened by the caidd 31, the gateway will be awakened and route the caidd 31 to the vehicle-mounted bus 2 and the vehicle-mounted bus n, and since the ECU21 is set in software to be awakened by the caidd 31, the ECU21 will be awakened and participate in the work; similarly, since ECUn2 is set in software to be woken up by CANID31, ECUn2 will be woken up and participate in work; since other ECUs are not related to this function, no settings in the software of other ECUs can be woken up by the caid 31, i.e. other ECUs will not be woken up; when the function trigger source of the ECU12 disappears, the ECU12 stops sending the CANID31 on the vehicle-mounted bus 1 and enters the sleep mode, when the gateway cannot receive the CANID31, the CANID31 is stopped to be routed to the vehicle-mounted bus 2 and the vehicle-mounted bus n, when the ECU21 cannot receive the CANID31 routed by the gateway, the ECU enters the sleep mode, when the ECUn2 cannot receive the CANID31 routed by the gateway, and therefore the energy consumption of the whole vehicle is reduced to the minimum.

Claims

1. The method for controlling the energy consumption of the whole electric automobile is characterized by comprising the following steps of: determining each ECU meeting the function requirement according to the function requirement, wherein each ECU comprises a first ECU, a second ECU and an Nth ECU; the first ECU is awakened by a function trigger source and sends a first CANID on the vehicle-mounted bus, the second ECU is awakened by the first CANID and sends a second CANID on the vehicle-mounted bus, and sequentially until the Nth-1 ECU is awakened by the (N-2) th CANID and sends the (N-1) th CANID on the vehicle-mounted bus, the Nth ECU is awakened by the (N-1) th CANID; when the function trigger source disappears, the first ECU stops sending the first CANID and sleeps, the second ECU stops sending the second CANID and sleeps because the first CANID cannot be received, and sequentially till the N-1 st ECU stops sending the N-1 st CANID and sleeps because the N-2 nd CANID cannot be received, and the Nth ECU sleeps because the N-1 st CANID cannot be received.

2. The vehicle energy consumption control method of the electric vehicle according to claim 1, wherein when the N-1 st ECU and the nth ECU are in different segments of the vehicle-mounted bus, the N-1 st ECU routes the N-1 st CANID to the vehicle-mounted bus where the nth ECU is located by the gateway when the N-1 st ECU sends the N-1 th CANID on the vehicle-mounted bus.

3. The vehicle energy consumption control method of the electric vehicle as claimed in claim 2, wherein the gateway is dormant when the nth-1 th CANID is not received.

4. The vehicle energy consumption control method of the electric vehicle as claimed in claim 1, wherein when the N-I ECU, the N-I +1 ECU to the N-I + J ECU are located in I + J different segments of the on-board bus, the N-I-1 caid is routed to the corresponding I + J different segments of the on-board bus by a gateway, and the N-I ECU, the N-I +1 ECU to the N-I + J ECU are awakened by the N-I-1 caid, where 1< I < N, and J is not less than I.