Method for controlling group of control devices of plurality of electronic control devices and group of control devices

Abstract

A method for controlling a control device group of a plurality of electronic control devices of an electric vehicle is created. The method comprises the steps of: detecting a current parking condition of the motor vehicle in which there is an activated operating function of the motor vehicle in which the at least one control device can be deactivated; detecting one or more operating parameters of the parking condition; detecting a geographic position of the parking condition; evaluating a geographic position of the detected parking condition and an operating parameter of the detected parking condition; creating an operating plan for the set of devices with respect to the deactivation of one or more deactivatable control devices in the set of devices based on the detected geographical location of the parking condition and the operating parameters of the detected parking condition and corresponding stored criteria for the geographical location and operating parameters of the parking condition; the created operational plan is executed by automatically deactivating the deactivatable control devices of the device group based on the created operational plan.

Description

Technical Field

[0001] The invention relates to a method for controlling a control device group for controlling a plurality of electronic control devices of an electric vehicle and to a corresponding control device group. Background Art

[0002] The interior of a modern motor vehicle consists mainly of computer-assisted electronics. Today, a wide range of functions can be implemented using programmable controllers. They control, for example, ignition and fuel injection, but also comfort functions such as fully automatic air conditioning as well as safety systems and driver assistance systems such as anti-lock braking systems (ABS) or electronic stability programs (ESP). So-called control units are responsible for the electronic control of these systems.

[0003] The control devices operate according to the so-called "EVA" principle: The control devices receive signals from sensors and operating elements, evaluate them and control so-called actuators, which are responsible for converting the signals from the control devices into specific actions. The control devices are networked via data buses and can therefore communicate with one another.

[0004] In modern motor vehicles, a large number of electronic control devices (typically 50-100) are usually installed, which have different control tasks before, during and after driving. Each of these control devices consumes the minimum electrical power in the idling state when activated.

[0005] The situation in which a motor vehicle is parked places special demands on the operating state of the onboard electrical system of the motor vehicle. In such a situation, at least some parts or functions of the onboard electrical system in modern vehicles continue to remain operational, such as units belonging to the radio interface of the locking system, via which a radio connection is established with the remote control key of the vehicle, or units which allow, for example, remote access to the vehicle.

[0006] Compared to classic fuel vehicles, electric vehicles have an additional operating mode, the charging mode. Depending on the charging power, the charging operation lasts from a short time to several hours. During charging, subsystems that are not required for the charging process enter standby mode.

[0007] Today's electric vehicles can often switch on a number of safety features that monitor the vehicle and battery when parked so that a quick reaction can be achieved. Examples include vehicle unlocking, monitoring via app, guard mode, pre-air conditioning, contactless entry. Energy saving mode (if available) must be selected and set manually.

[0008] For example, DE 10250616 C1 and DE 102009027593 A1 describe corresponding onboard electrical systems for motor vehicles. In this case, a superior onboard electrical system, the so-called master control unit, can selectively switch its subordinate, the so-called slave control units, between a standby mode (also called sleep operating mode or sleep mode) and a normal operating state (also called normal operating mode) via corresponding control signals. During its standby operating mode, the control unit can in particular at least receive a wake-up signal and then switch to the normal operating state.

[0009] DE 102014224485 A1 discloses an onboard power supply for a vehicle, comprising a current source and at least one sampling control device, which is configured to sample a state signal from at least one other control device and / or at least one switching unit in a clocked manner at a predetermined cycle time. The onboard power supply is configured so that it can switch from a first operating state (so-called normal operating state) to a second operating state (so-called standby operating state), in which the onboard power supply consumes less power than in the normal operating state. The onboard power supply is also configured to detect the state signal at a shorter cycle time in the normal operating state than in the standby operating state. The sampling control device is configured so that in the standby operating state, the cycle time is automatically changed from the first standby cycle time to the second standby cycle time by means of a predetermined switching parameter.

[0010] DE 102016215388 A1 discloses a method for planning and controlling the idling operation of a motor vehicle and in particular for preparatory planning and subsequent control of vehicle functions during idling operation, in particular a method for planning and controlling at least one function of the vehicle in idling operation based on a prediction of the length of an expected stop time of the vehicle.

[0011] In all known systems, the energy saving mode (if present) must be selected and set manually or is activated only in the event of a long stop and low battery charge. Without the energy saving mode, the vehicle's own consumption can reach 1 kWh per day. Especially in the case of the vehicle being used as a stationary battery, the high energy consumption is undesirable. Summary of the invention

[0012] According to the invention, a method for controlling a control device group for controlling a plurality of electronic control devices of an electric vehicle is provided having the features of claim 1 and a control device group having the features of claim 9 .

[0013] The basic idea of ​​the present invention is to minimize the power required by a control unit group of the electric vehicle depending on a predefined parking situation.

[0014] The core of the present invention is to create an operation plan for the device group regarding the deactivation of one or more deactivatable control devices in the device group based on the detected geographic location of the parking condition and the detected operating parameters of the parking condition and corresponding stored standards for the geographic location and operating parameters of the parking condition.

[0015] Therefore, the present invention enables the power consumption of the control device group to be minimized.

[0016] Advantageous refinements and developments emerge from the further dependent claims and from the description with reference to the figures.

[0017] According to a preferred development, at least one predefined address, in particular a home address, is stored as a criterion for the geographical location.

[0018] According to a further preferred development, the operating plan provides for deactivation of all deactivatable control devices in the device group if the detected geographical location matches a predefined address.

[0019] According to another preferred extension, the operating parameters of the parking conditions stipulate that the electric vehicle has an occupant's occupancy state, wherein the operating plan stipulates that if the detected geographical location corresponds to a predetermined address and if the detected operating parameters of the parking conditions stipulate that the electric vehicle has an occupant's occupancy state, then all deactivatable control devices in the device group are deactivated without deactivation or with a delay of a predetermined time period.

[0020] According to a further preferred development, the predefined time period is input by the vehicle occupant.

[0021] According to a further preferred development, the operating parameter of the parking condition specifies a use of the electric vehicle as a stationary energy store in the local grid, wherein the operating plan specifies that all control devices in the device group are deactivated if the use of the electric vehicle as a stationary energy store in the local grid is detected as an operating parameter of the parking condition.

[0022] According to a further preferred development, evaluating the detected geographical location of the parking condition and the detected operating parameters of the parking condition comprises predicting a future temporal development of the parking condition and of the operating parameters of the parking condition, wherein an operating plan is created based on the predicted temporal development of the parking condition and of the operating parameters of the parking condition.

[0023] According to a further preferred development, during the parking condition, one or more operating parameters of the parking condition are periodically redetected, the detected operating parameters of the parking condition are reevaluated, and the operating plan of the device group is recreated with respect to the deactivation of one or more deactivatable control devices in the device group based on the detected operating parameters of the parking condition and correspondingly stored criteria for the operating parameters of the parking condition. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] The invention is explained in more detail below based on the exemplary embodiments illustrated in the schematic diagram.

[0025] Figure 1 A schematic block diagram for explaining a control device group of a plurality of electronic control devices of an electric vehicle according to a first embodiment of the present invention is shown.

[0026] Figure 2 A flowchart for explaining a method for controlling a control device group of a plurality of electronic control devices of an electric vehicle according to a first embodiment of the present invention is shown; and

[0027] Figure 3 A flowchart for explaining a method for a control device group for controlling a plurality of electronic control devices of an electric vehicle according to a second embodiment of the present invention is shown.

[0028] The figures should provide a further understanding of the embodiments of the present invention. The figures illustrate embodiments and are used in conjunction with the description to explain the principles and concepts of the present invention. Other embodiments and many of the advantages mentioned are derived with reference to the drawings. The elements in the drawings are not necessarily shown in proportion to each other.

[0029] In the individual figures of the drawings, identical elements, features and components having the same function and acting in the same manner are provided with the same reference symbols, unless otherwise indicated. DETAILED DESCRIPTION

[0030] Figure 1 A schematic block diagram for explaining a control device group of a plurality of electronic control devices of an electric vehicle according to a first embodiment of the present invention is shown.

[0031] exist Figure 1 In the figure, reference numeral 1 denotes an electric vehicle with a rechargeable drive battery BAT. The electric vehicle 1 is parked in a garage at a home address. The drive battery BAT is connected to a wall box 50 via a charging cable 10, which is plugged into a corresponding socket 15 of the electric vehicle 1. The electric vehicle 1 is in a state of use in which the electric vehicle is used as a fixed energy storage in a local power grid, which is controlled by a charging controller (not shown). In other words, the electric vehicle 1 feeds the electric energy of the drive battery BAT into the local network.

[0032] A control device group having a plurality of electronic control devices S10-S40 networked via a CAN bus BU is provided in the electric vehicle 1. The CAN bus is also connected to a central control unit CC, which can execute an operating program stored therein when the electric vehicle 1 is running.

[0033] An engine control device S10 for engine control, a brake control device S20 for brake control, an air conditioning control device S30 for controlling an air conditioning system KL, and a cooling control device S40 for controlling a cooling system KS for cooling the drive battery BAT during driving operation and charging operation are listed only as examples and not in detail.

[0034] Reference numeral 25 denotes a GPS antenna, and reference numeral 35 denotes a network antenna, for example for WLAN and / or LTE and / or beacon.

[0035] Furthermore, reference symbol SE denotes a detection device having a plurality of sensors for detecting various operating states and operating parameters associated with the operating states.

[0036] In particular, the parking state of the electric vehicle 1 can be detected by the sensor device SE, and the geographical location of the electric vehicle 1 can be detected in conjunction with the GPS antenna 25 or the network antenna 35 .

[0037] Reference below Figure 2 and Figure 3 explain Figure 1 The functionality of the components shown in .

[0038] Figure 2 A flowchart for explaining a method for a control device group for controlling a plurality of electronic control devices of an electric vehicle according to a first embodiment of the present invention is shown.

[0039] In step S1 , a current parking condition of the motor vehicle is detected by the sensor device SE, in which an active operating function of the motor vehicle is present and in which at least one control device can be deactivated.

[0040] In this case it can be provided that certain control devices cannot be deactivated, for example a monitoring device (not shown) of the drive battery BAT.

[0041] Furthermore, in step S1 , one or more operating parameters of the parking condition are detected by the sensor device SE, and the geographical location of the parking condition is detected.

[0042] In step S2 , a future temporal development of the parking condition and of operating parameters of the parking condition is predicted, optionally with the aid of the central control unit CC.

[0043] Furthermore, in step S3 , the geographical location of the detected parking situation and operating parameters of the detected parking situation are evaluated by means of the central control unit CC.

[0044] In step S4, an operating plan for the device group is created with the aid of the central control unit CC regarding the deactivation of one or more deactivatable control devices in the device group based on the detected geographical location of the parking condition and the detected operating parameters of the parking condition and correspondingly stored criteria for the geographical location and operating parameters of the parking condition, and finally in step S5, the created operating plan is executed with the aid of the central control unit CC by automatically deactivating the deactivatable control devices in the device group based on the created operating plan.

[0045] Optionally, by jumping back in step S6, one or more operating parameters of the parking condition are periodically re-detected S1 during the parking condition, a future temporal development of the parking condition and of the operating parameters of the parking condition are optionally re-predicted, the detected operating parameters of the parking condition are re-evaluated S3, and an operating plan of the device group is re-created S4 with respect to deactivation of one or more deactivatable control devices of the device group based on the detected operating parameters of the parking condition and correspondingly stored criteria for the operating parameters of the parking condition.

[0046] The creation of an operating plan for an equipment group regarding the deactivation of one or more deactivatable control devices in the equipment group by means of the central control unit CC based on the detected geographical location of the parking condition and the detected operating parameters of the parking condition and correspondingly stored criteria for the geographical location and operating parameters of the parking condition is explained in more detail below.

[0047] In a first embodiment, at least one predefined address, in particular a home address, is stored as a criterion for the geographical location, wherein the operating plan provides that all control devices S10 - S40 in the device group are deactivated if the detected geographical location matches the predefined address.

[0048] Alternatively, the operating parameters of the parking condition may specify that the electric vehicle has an occupant's occupancy state, which can be detected by the sensor device SE, wherein the operating plan specifies that all control devices S10-S40 of the device group are deactivated without or with a delay of a predetermined time period if the detected geographical location corresponds to a predetermined address and if the detected operating parameters of the parking condition specify that the electric vehicle has an occupant's occupancy state. The predetermined time period can be input by the occupant via an input device (not shown).

[0049] Figure 3 A flow chart for explaining a method for controlling a control device group of a plurality of electronic control devices of an electric vehicle according to a second embodiment of the present invention is shown. Steps S1 ' to S6 ' correspond to steps S1 to S6 of the first embodiment.

[0050] In contrast to the first embodiment, the creation of the operating plan is performed differently in the second embodiment. Here, the operating parameters of the parking condition specify the use of the electric vehicle as a stationary energy store in the local grid, wherein the operating plan specifies that all control devices S10-S40 in the device group are deactivated if the use of the electric vehicle as a stationary energy store in the local grid is detected as the operating parameter of the parking condition.

[0051] In other words, all control devices S10 - S40 of the device group are deactivated solely on the basis of the operating parameters of the parking state and the parking condition as the usage state of the electric vehicle as a stationary energy store in the local grid, regardless of the detected geographical location.

[0052] In other respects, the second embodiment is the same as the first embodiment.

[0053] Although the present invention has been described based on the preferred embodiments, the present invention is not limited thereto but can be modified in various ways.

[0054] In particular, the invention can be applied to any control device.

Claims

1. A method for controlling a control device group of a plurality of electronic control devices (S10-S40) of an electric vehicle (1), comprising the following steps: detecting ( S1 ; S1 ′) a current parking condition of the motor vehicle, in which an activated operating function of the motor vehicle is present, in which at least one control device can be deactivated; Detection (S1; S1') one or more operating parameters of the parking condition; Detecting (S1; S1') the geographical location of the parking condition; evaluating (S3; S3') the detected geographical location of the parking condition and the detected operating parameters of the parking condition; Creating a deactivation of one or more deactivatable control devices in the device group based on the detected geographical location of the parking condition and the detected operating parameters of the parking condition and corresponding stored criteria for the geographical location and the operating parameters of the parking condition (S4; S4') operation plan of the equipment group; as well as The method is performed by automatically deactivating the deactivatable control devices in the device group based on the created operation plan (S5; S5') creates an operation plan. 2 . The method according to claim 1 , wherein at least one predefined address, in particular a home address, is stored as a criterion for the geographical location. 3 . The method according to claim 2 , wherein the operating plan stipulates that all deactivatable control devices in the device group are deactivated ( S10 - S40 ) if the detected geographical location matches the predefined address.

4. The method according to claim 2, wherein the operating parameters of the parking condition stipulate that the electric vehicle has an occupied state with an occupant, and wherein the operating plan stipulates that if the detected geographical location is consistent with the predetermined address and if the detected operating parameters of the parking condition stipulate that the electric vehicle has an occupied state with an occupant, then all deactivatable control devices (S10-S40) in the device group are deactivated without deactivation or with a delay of a predetermined time period. The method of claim 4 , wherein the predetermined time period is input by an occupant.

6. A method according to any one of the preceding claims, wherein the operating parameters of the parking condition specify the usage state of the electric vehicle as a fixed energy storage device in the local power grid, and wherein the operating plan specifies that if the usage state of the electric vehicle as a fixed energy storage device in the local power grid is detected as the operating parameters of the parking condition, all control devices (S10-S40) in the device group are deactivated.

7. The method according to any of the preceding claims, wherein evaluating (S3; S3') the detected geographical location of the parking condition and the detected operating parameters of the parking condition comprises predicting a future temporal development of the parking condition and a future temporal development of the operating parameters of the parking condition, and wherein the operating plan is created based on the predicted temporal development of the parking condition and the predicted temporal development of the operating parameters of the parking condition.

8. A method according to any one of the preceding claims, wherein during the parking condition, one or more operating parameters of the parking condition are periodically redetected (S1; S1'), the detected operating parameters of the parking condition are reevaluated (S3; S3'), and an operating plan of the device group is recreated (S4; S4') regarding deactivation of one or more deactivatable control devices in the device group based on the detected operating parameters of the parking condition and corresponding stored criteria for the operating parameters of the parking condition.

9. A control device group, comprising: A plurality of electronic control devices (S10-S40) of an electric vehicle (1); A detection device (SE) is used to detect (S1; S1′) a current parking condition of the motor vehicle, in which an activated operating function of the motor vehicle is present, in which at least one control device can be deactivated, for detecting (S1; S1′) one or more operating parameters of the parking condition, and for detecting (S1; S1′) a geographical location of the parking condition; an evaluation device (CC) for evaluating (S3; S3') the detected geographical location of the parking condition and the detected operating parameters of the parking condition, for creating (S4; S4') an operation plan of the device group regarding deactivation of one or more deactivatable control devices in the device group based on the detected geographical location of the parking condition and the detected operating parameters of the parking condition and correspondingly stored criteria for the geographical location and the operating parameters of the parking condition, and for automatically deactivating the deactivatable control devices in the device group based on the created operation plan to perform (S5; S5') creates an operation plan.

10. The control device assembly according to claim 9, wherein at least one predefined address, in particular a home address, can be stored in the evaluation device (CC) as a criterion for the geographical location. 11 . The control device group according to claim 10 , wherein the operating plan stipulates that all deactivatable control devices ( S10 - S40 ) in the device group are deactivated if the detected geographical location matches the predefined address.

12. A control device group according to claim 10, wherein the operating parameters of the parking conditions stipulate that the electric vehicle has an occupied state with an occupant, and wherein the operating plan stipulates that if the detected geographical location is consistent with the predetermined address and if the detected operating parameters of the parking conditions stipulate that the electric vehicle has an occupied state with an occupant, then all deactivatable control devices (S10-S40) in the device group are deactivated without deactivation or with a delay of a predetermined time period.

13. A control device group according to claim 12, wherein the predetermined time period can be input by an occupant.

14. A control device group according to any one of claims 9 to 13, wherein the operating parameters of the parking condition specify the usage state of the electric vehicle as a fixed energy storage device in the local power grid, and wherein the operation plan stipulates that if the detected operating parameters of the parking condition are the usage state of the electric vehicle as a fixed energy storage device in the local power grid, all control devices (S10-S40) in the device group are deactivated.

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