EP3532346A1 - Verfahren zum betreiben eines bordnetzes - Google Patents
Verfahren zum betreiben eines bordnetzesInfo
- Publication number
- EP3532346A1 EP3532346A1 EP17768410.7A EP17768410A EP3532346A1 EP 3532346 A1 EP3532346 A1 EP 3532346A1 EP 17768410 A EP17768410 A EP 17768410A EP 3532346 A1 EP3532346 A1 EP 3532346A1
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Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60R—VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR
- B60R16/00—Electric or fluid circuits specially adapted for vehicles and not otherwise provided for; Arrangement of elements of electric or fluid circuits specially adapted for vehicles and not otherwise provided for
- B60R16/02—Electric or fluid circuits specially adapted for vehicles and not otherwise provided for; Arrangement of elements of electric or fluid circuits specially adapted for vehicles and not otherwise provided for electric constitutive elements
- B60R16/03—Electric or fluid circuits specially adapted for vehicles and not otherwise provided for; Arrangement of elements of electric or fluid circuits specially adapted for vehicles and not otherwise provided for electric constitutive elements for supply of electrical power to vehicle subsystems or for
Definitions
- the invention relates to a method for operating a vehicle electrical system in a vehicle
- An electrical system is to be understood as the entirety of all electrical components in a motor vehicle. This includes both electrical consumers and supply sources, such as. Generators or electrical storage, z. B. batteries. Care must be taken in the motor vehicle so that electrical energy is available in such a way that the motor vehicle can be started at any time and an adequate power supply is ensured during operation. For this purpose, methods and devices for energy management or for energy management can be used.
- driver assistance systems that actively support the driver in the longitudinal and transverse guidance of the vehicle, the requirements for safety and reliability of the electrical supply of safety-critical components increase.
- driver assistance systems which are to take on the task of driving the vehicle partly or completely, a distinction is made between highly automatic and fully automatic driving, the driver is only limited or no longer available as a fallback level.
- Highly automated driving which is also referred to as highly automated driving, is an intermediate step between assisted driving, in which the driver is assisted by assistance systems, and a fully automated driving.
- automatic or autonomous driving in which the vehicle travels automatically and without the intervention of the driver.
- the vehicle In the case of highly automatic driving, the vehicle has its own intelligence that could plan ahead and take on the driving task, at least in most driving situations. Therefore, in a highly automatic driving, the electrical supply has a high
- the autonomous system must provide a minimum of functionality and enable the transition to the safe state.
- the energy requirements of the safety-critical components such as actuators, sensors and logic, must be guaranteed.
- an operating strategy is needed, which operates the system in an optimum for the achievement of the defined objectives operating point. If only the knowledge of the current and past system states is used to select the optimum operating point, then the operating strategy is referred to as causal. If the operating strategy additionally has knowledge of future system states that are known a priori or are determined predictively, the operating strategy is described as non-causal.
- Another classification of operating strategies is based on the control optimality. If the choice of the optimal operating point is based on intuitive rules derived from human thinking, then this is a heuristic operating strategy. If, on the other hand, the optimal control theory is used in the search for the optimum operating point, then the operating strategy is described as optimal.
- the system in this case the on-board network, is mapped in a mathematical model and a cost functional is set up to fulfill the overarching goals, which are then minimized or maximized in compliance with equality and / or inequality conditions.
- the optimization takes place either at the term of the Systems, ie online, or purely for design purposes during the development phase and for the evaluation of rule-based procedures, ie offline.
- An operating strategy with the primary objectives of increasing energy efficiency and distributing the energy resources to individual components in the on-board electrical system is referred to as energy management.
- energy management approaches for purely internal combustion engine vehicles, hybrid and purely electric motor vehicles The objectives of the operating strategies can be classified into the following main groups:
- a further operating strategy and a safety concept for fault operation is required.
- One possibility for realizing such a security concept are rule-based and predefined error reactions.
- a security analysis is carried out and possible errors are identified. If a safety-critical fault known to the system occurs, the vehicle is transferred to a safe state according to a defined scenario. For each known error, both the error response and a scenario for the transition to the safe state must therefore be defined in advance. If the topology and / or the components of the energy supply system are changed, the safety analysis must be carried out again in this approach, the safety concept and the operating strategy must be adapted and re-assured.
- the operating strategy and the underlying safety concept depend on the topology of the energy supply system. When changing the topology, a safety analysis must be carried out again, the safety concept must be re-created and the operating strategy must be adapted and secured accordingly.
- the operating strategy as well as the underlying security concept are rule-based, d. H. Depending on the error that has occurred, firmly defined error responses and a defined scenario for the transition to the safe state are initiated.
- the definition of fault responses and design of the electrical system is based on assumptions for the system and the environment.
- the operating strategy and the underlying safety concept do not take into account the efficiency of the power distribution in the electrical system.
- One of the main requirements for fail-safe on-board electrical systems used in motor vehicles is to ensure a reliable power and power supply for safety-critical functions for the duration of a transition to a safe state, especially in the event of a system failure.
- the establishment of a secure power supply for safety-critical functions is a functional safety requirement.
- new fault-tolerant on-board network topologies become necessary on the one hand.
- a functional safety concept is required for the electrical energy management system, which controls a fault-tolerant on-board network.
- One approach to developing a functional safety concept for an electrical management system could be to analyze and identify all possible on-board fault conditions and to define a response for each individual fault. This approach would result in a rule-and-topology based on-board control strategy and safety concept which would require time-consuming error analysis, definition and verification of fault responses for each on-board network configuration and topology, without guaranteeing that the assumed fault hypothesis is complete.
- a safety state that must be achieved in the event of a system failure for a vehicle with an automated drive, is the standstill.
- the scenario for transitioning to a stop may be different, starting with driving to the destination given by the user and parking the vehicle at the destination as the best case scenario, and ending with an emergency stop and a stop of the vehicle Vehicle on the same lane as the worst-case scenario.
- a rule-based functional safety concept would also mean defining a fixed scenario for each possible error to transition to a safe state, which would require a lot of time to verify or prove that the safe state will be achieved under all conditions designed topologyvariant. Slight changes in the on-board network topology and / or sizing of on-board components would require a new iteration of verification.
- the verification of the safety concept is carried out under certain assumptions and model limitations for components of a vehicle electrical system as well as for vehicle condition states, it becomes clear that the safety concept would be softened by the uncertainty in the assumption made.
- One of the main goals of energy management systems is to increase the energy efficiency of the system. This goal is achieved by optimizing and reducing the system energy consumption.
- the aspect of power distribution is not considered due to the lack of configurability at the system level for power distribution.
- redundancies may be required to meet the requirement for a fail-safe power supply.
- Providing redundancy means using additional on-board network components, which means a higher degree of freedom at the system level, which is necessary to optimize the energy and power distribution.
- An important goal for the energy management system presented herein is to provide a concept for a generic control strategy for a failsafe on-board network for automated driving that is independent of its topology and component sizing. It will Assuming that an on-board vehicle network consists of up to N (N> 1) sub-networks, which are interconnected via power links.
- N N> 1 sub-networks, which are interconnected via power links.
- the concept for the generic energy management system presented herein could be used in a vehicle with an internal combustion engine as well as in a hybrid drive or in all-electric vehicles. However, the examples presented herein show an on-board network topology for all-electric vehicles for all-electric vehicles.
- the application of the generic energy management system for a specific vehicle type does not require any changes in the control algorithm and the functional safety concept and is achieved only by configuring and parameterizing the energy management system.
- An important objective with regard to functional safety is to condition the vehicle electrical system in such a way that the vehicle comes to a stop in the safest possible place in the event of a fault.
- An additional non-functional requirement for an energy management system is to provide the maximum possible ride comfort and driving profiles for normal operation and failure situations.
- a three-level degradation concept is presented in design, based on predicted data for the driving profiles, predicted available energy resources and predicted energy requirements for the drive and for safety-critical functions and comfort functions.
- the three levels of the degradation concept can be, in particular, the degradation of the load profiles for comfort functions, the degradation of the driving profiles (speed and acceleration) and the degradation of the target to be achieved for standstill.
- the load profile, the driving profile and the destination are mentioned above and below.
- other criteria can also be selected.
- the method can also be carried out with only one criterion. Basically, at least one criterion is provided.
- the method can also be carried out with two, three, four or more criteria. If several criteria are provided, these can be successively demoted in a specific order. This order represents a prioritization of the criteria.
- the energy management system presented herein is an adaptive runtime optimized (on-line) topology independent control strategy with the main goal of reliable and energy efficient power supply and distribution for distributed fail-safe on-board network topologies for automated driving, both for normal operation as well as for fault operation is suitable.
- an energetic on-board network can consist of up to N (N> 1) sub-board networks, which can be interconnected as desired to the entire on-board network of the vehicle.
- the vehicle can be driven purely by internal combustion engine, hybrid or purely electric motor.
- the safest destination ie a destination with the highest priority, while the driver specified destination is considered, which can be degraded depending on the condition of the entire electrical system, the electrical system components and the environment. It should be noted that this method gives the safest destination the highest priority. A top priority destination is generally not necessarily the safest destination. The individual stages of degradation from the destination are presented below. If, for example, the energy content of the battery in the faulty or faultless state for a given driving profile and switched comfort consumers according to their load profile sufficient for reaching the driver specified destination, the operating strategy reacts with measures to increase the range and optimization of energy flow, the detailed below being represented.
- the operating strategy also reacts with degradation measures to reduce the energy requirements of the system, the detailed below being represented. If the operating strategy determines that the destination specified by the driver can not be reached despite the vehicle electrical system conditioning, the destination with the next highest priority, for example a continuation of the journey to a parking space, is aimed for.
- diagnostic data on the system and component level, environmental information as well as the state of the individual components of the energy supply system and their changes in real time can be taken into account.
- the error responses and the choice of the scenario for the transition to the safe state are therefore not predefined in contrast to known methods and are adaptive, for example, in real time depending on the state of the system and the environment and the availability of the electrical system components. It is thus an optimized and predictive energy management system that is able to take measures to stabilize the vehicle electrical system even when an error occurs outside the specified error hypothesis and to bring the vehicle into the safe state with the best possible scenario.
- the approach of the presented method allows the detection of abnormalities, ie deviations from the specified state, even in case of non-functioning diagnosis of the on-board network components and the introduction of appropriate measures for on-board network stabilization in detected abnormalities.
- the presented method which realizes an energy management system, has five main goals:
- Figure 1 shows in a block diagram the structure of an embodiment of an energy management system.
- FIG. 2 shows a proposal for the prioritization of scenarios for the transition to the safe state.
- FIG. 3 shows the electrical block diagram of a partial on-board network K.
- FIG. 4 shows the energy flow diagram of the sub-board network K from FIG. 3.
- FIG. 5 shows the Sankey diagram of the sub-board network K from FIG. 3.
- FIG. 6 shows a 3-level degradation concept.
- FIG. 7 shows an example of the execution of a 3-level degradation concept.
- FIG. 8 shows an on-board network topology with four sub-board networks.
- FIG. 9 shows in a diagram values for energy resources and energy consumption.
- FIG. 10 shows possible solutions to an optimization problem.
- FIG. 1 shows a block diagram of the architecture or the structure of an energy management system (EEM), which is denoted overall by the reference numeral 10.
- EEM energy management system
- the illustration shows a top-level energy management system (top EEM) 12, a first sub-energy management system (sub-EEM) 14, a second sub-EEM 16, an n-th sub-EEM 18, a first sub-board network 20 second sub-board network 22 and an n-th sub-board network 24.
- the sub-network systems 20, 22 and 24 form an energy on-board network 26, which thus consists of n sub-board networks 20, 22, 24.
- Each sub-board network 20, 22 and 24 has a sub-energy management system 14, 16 and 18, respectively, which knows the configuration and the state of the sub-board network 20, 22 and 24, respectively.
- the size of the energy store, the maximum output power of coupling elements and the efficiencies in energy transfer, etc. belongs to the configuration of the sub-board network 20, 22 and 24, respectively.
- a superordinated entity, the top EEM 12, optimizes the energy exchange between the sub-networks 20, 22, 24 and defines defaults for the sub-energy management systems 14, 16, 18 to fulfill the objectives defined herein.
- a functional architecture for an energy management system is illustrated in FIG. It is assumed that an on-board network consists of N (N> 1) channels or sub-board networks. Each sub-board network K is controlled and monitored by an associated sub-energy management system K e [1 .. N].
- the generic control algorithm for a sub-energy management system is used on a given sub-on-board network topology via a configuration file containing all relevant information about the components of that sub-board network. This information includes, for example, the number of energy stores, which may also be zero, and their nominal capacity, the energy consumption of safety-critical components and comfort components including their demotion profiles.
- the sub-power management system monitors, during runtime, the current state of components associated with the sub-networks and receives diagnostic information, which makes it possible to initiate local responses to abnormalities or component failures
- Top-level energy management system which is responsible for the system-level control and error response.
- the top-level energy management system is designed for a given system via a configuration file that includes all relevant information about the given system. This information includes, for example, the number of sub-grids, efficiency maps for the drive and its components, and power links connecting the sub-systems, vehicle parameters that predict the amount of energy relevant to predicting the amount of energy needed for the drive. Based on this data and runtime information, the top-level power management system is able to optimize power flow, adapt the control strategy to the current system state, and adjust responses to system-level abnormalities or errors.
- the safest place is considered to be the destination specified by the driver. If the operating strategy recognizes that it is under no circumstances possible to achieve this goal, the next safest goal is sought, which may mean, for example, a drive to the next free parking space. This is also referred to as degradation of the destination.
- a free parking space could, for example, be reserved via vehicle-to-vehicle or V2X (Vehicle-to-X) communication.
- FIG. 2 shows a proposal for prioritizing SSL scenarios.
- the illustration shows in a table 50 the columns destination 52, priority 54, name 56 and energy requirement 58. Destinations are: destination by driver 60, parking 62, emergency stop 64, shoulder 66, right lane 68, same lane 70 and emergency braking 72nd name 56 are: SSL A 80, SSL B 82, SSL C 84, SSL D 86, SSL E 88, SSL F 90 and SSL G 92.
- FIG. 2 thus shows a proposal for a possible prioritization of the scenarios for the transition to the safe state in descending order.
- the scenarios SSL A 80 to SSL E 90 require a drive, steering and braking function. If, for example, the drive function fails, these scenarios are no longer executable.
- the scenarios SSL E 88 and SSL F 90 require a steering and braking function, assuming that coasting is possible. Egg- Emergency braking according to scenario SSL G 92 must be carried out when no steering function is available.
- the operating strategy can be adaptive, predictive and online-optimized.
- the realization of such an operating strategy is based on a mathematical description of the distributed on-board network.
- an on-board electrical system can consist of up to N (N> 1) sub-networks, which are connected to one another via energy converters / couplers.
- FIG. 3 shows a partial onboard network, which is denoted overall by the reference numeral 100.
- the illustration shows a K-th output PLouT_i, k 102 and K-th A ⁇ gear PLiN_k, i 104 from the first part-board network, a K-th output PLouT_n, k 106, and K-th input PLiN_k n, 108 from the N-th sub-board network , a first input PÜN_i, k HO and an N-th input PLiN_ n, k, 112 (the K-th sub-board network, a first output Plout U 114 and an N-th output PLouT_k, n 116, K-surfactant-part electrical system, l, K) -th coupling element 118, a (N, K) -th coupling element 120, a (K, l) -th coupling element 122, a (K, N) -th
- FIG 4 shows an energy flow diagram of a K-th sub-board power supply system 150 according to FIG 3.
- the figure shows the energy flows ⁇ _ ⁇ , ⁇ 152 at the K-th From ⁇ gear and EIN_K, I 154 at the K-th input of the sub-board network 1, energy flows EOUT_N, K 156 on K-th output and EIN_K, N 158 at K-th input from Operabord ⁇ network N, energy flows EIN_I, K 160 at the first input and EIN_N, K 162 at the N-th input from the sub-board network K, energy flows ⁇ _ ⁇ , ⁇ 164 at the first output and EOUT_K, N 166 at the Nth output of the sub-electrical network K, a power link (1, K) 168, a power link (N, K) 170, a power link (K, l) 172 and a power link (K, N) 174, Energy flow / resources of the K 176 sub-board network with associated energy flow / demand
- a sub-board network K (K e [1 .. N]) can be supplied at the input of up to N 1 sub-board networks via energy converters PL i j ⁇ , K ll8, 120; the sub-board network K serves as an "energy sink", and at the output up to N-1 sub-network via energy converter PLOUT .
- An energy converter may be a DC-DC converter, a switch, a toggle switch or any other type of coupling elements that allow an energy flow between two sub-networks.
- HPLJ.K For the energy consideration of a coupler with efficiency HPLJ.K applies:
- EOUTJ.K or EINJ.K denotes the energy that flows from the sub-board network i to the sub-board network K.
- a sub-board network K (K e [1 .. N]) can have the following component classes (see FIGS. 3, 4 and 5):
- OPR OPR
- the goal of online optimization is to maximize the energy resources available in the vehicle upon arrival at the destination.
- cost functional can be set up for this:
- the sub-subnetworks that represent a source or a sink In the established cost functional, a distinction is made between sub-subnetworks that represent a source or a sink. If more energy is stored in the energy stores of the sub-board network than is needed to supply the components of this sub-board network for the entire onward journey, then the subsystem on-board network referred to as a source. If the energy requirement of a sub-board network is greater than the energy stored in this sub-board network, the sub-board network is referred to as sink and the missing energy resources must be made available by other sub-board networks.
- the set of all sub-networks that represent a source is called SRC (Sou RCe).
- the established cost functional thus represents the sum of all remaining energy resources on arrival at the destination of all sub-networks, which act as a source and are functional. The following terms are used in equation (3):
- Equation (4) In order to increase the energy efficiency, the cost functional set up in equation (4) must be maximized in compliance with the energy balance ESPN_K (K e [1..N]) (see equation (3)) in all non-failed sub-networks, with the result that that the energy losses are minimized due to energy transport.
- a sub-board network is said to have not failed if it has either a functional energy store or at least can be served by another functional sub-board network.
- Compliance with the energy balance (ESPN_K ⁇ 0) for each on-board network K means that the energy resources are allocated so that the energy requirements of the components are always met.
- OPR OPR
- the main objective of the operating strategy according to the presented method is to optimize the energy flow in the electrical system in such a way that the safest possible destination with the highest possible driving comfort, d. H. Use of comfort consumers, and the best possible driving profile, for example, in terms of speed, acceleration, etc., is achieved.
- the energy requirements for the onward journey are compared with the available energy resources based on predictive data in real time or online. If the energy resources exceed the energy requirement, the destination can be reached.
- the operational strategy does not demote and only takes measures to increase energy efficiency.
- the operating strategy carries out degradation measures. In this case, a 3-level degradation concept is proposed, as shown in FIG.
- 1st level 300 gradual degradation of comfort consumers (load profile)
- 3rd level 304 Gradual degradation from the destination
- Criteria to which values can be assigned are thus the load profile, the driving profile and the destination.
- FIG. 6 right shows the basic procedure of the degradation (reference numeral 320).
- each sub-energy management system (sub-E EM) has a degradation table of the consumers in its sub-board network. A classification of the consumers into different classes or stages is based on this.
- the degradation table can have up to M classes of consumers, which can be arbitrarily set by OEMs.
- the class of consumers is also the priority. If the energy demand exceeds the existing energy resources, the consumers are degraded or shut down step by step.
- the class M of consumers is degraded first. Consumers will be demoted until the energy balance for each on-board functional network is achieved for the duration of the onward journey. H. ESPN_K> 0 with K e [1 .. N]) (see FIG. 6).
- the driving profile is degraded.
- the degradation of the driving profile is also gradual and can be defined from normal to slow driving profile in several stages.
- the definition of driving profiles, ie speed, acceleration, etc., as well as their stages, is carried out by OEMs and is configured accordingly in the operating strategy.
- the stepwise de-rating of the load (load profile) is carried out (see FIG. 6).
- the degradation on the 1st level 300 and the 2nd level 302 takes place until the energy balance for the duration of the onward journey in all functional sub-board networks is achieved.
- the destination is degraded in the third level 304 of the degradation concept.
- the definition, number of stages and the prioritization of destinations can also be done by OEMs and is taken into account in the operating strategy by configuration.
- the travel profile (2nd level 302) and the load profile (1st level 300) are gradually degraded.
- the degradation on the first level 300, the second level 302 and the third level 304 takes place until the energy balance for the duration of the onward journey is achieved (see FIG. 6). An example is shown in FIG.
- FIG. 7 shows an example of the execution of a 3-level degradation concept.
- the illustration shows a table 400 with a column Steps 402 in which is recorded for load profiles 404 group M 410, group Ml 412 to group 1 414, for driving profiles 416 normal 420 to slow 422 and for destination 426 SSL A 430, SSL B 432 to SSL G 434.
- the last line 440 shows the result of the optimization, ie Whether the current degradation levels (load profile, driving profile and destination) allow you to continue driving with current SSL.
- this degradation concept allows a maximum possible comfort 450, a maximum possible optimality of the driving profile and the transfer of the vehicle to the safe state (standstill) in a still maximally safest place according to the SSL prioritization.
- the optimization at the start values SSL A 430 namely the target by the driver, for the travel destination, normal driving profile 420 as well as all comfort consumers switched on, group M 410, begins.
- the energy balance for all functional sub-systems is only reached at destination SSL B 432, ie drive to the parking lot, slow driving profile 422 and level or group 1 414 of the switched consumers.
- this configuration represents the maximum possible comfort and the best possible driving profile, which allow the maximum possible destination to be reached.
- the operating strategy does not start the components until a solution to the optimization problem is found. Then, the motor vehicle is driven accordingly.
- the levels of degradation are interchangeable. If, for example, an OEM sets maximum possible comfort and does not drive on to the safest possible destination, then the levels of degradation can be exchanged.
- FIG. 8 shows a vehicle electrical system 500 with a first sub-board network 502, a second sub-board network 504, a third sub-board network 506 and a fourth sub-board network 508.
- the first sub-board network 502 is connected to the second sub-board network 504 via a DC-DC converter 510.
- the second sub-board network 504 is connected to the third sub-board network 506 via a DC-DC converter 512.
- the fourth sub-board network 508 is connected via a toggle switch 520 to the second and third sub-networks 504 and 506.
- EI_OAD The energy demand of all consumers in a sub-network K (K e [1..4]) is denoted by EI_OAD ⁇ K>.
- the sum of all energy resources in a sub-board network K (K e [1..4]) is called EBAT ⁇ K>.
- the efficiency of the energy flow from the sub-board network i to the sub-board network j (i, j e [1..4]) is denoted by ⁇ , ⁇ .
- EAVB ⁇ K> denotes the surplus energy in the sub-board network K and EREQIK ⁇ the energy missing in the sub-board network K for fulfilling the energy balance ESPN_K (K e
- FIG. 9 shows in a diagram 600 determined predictive values of the energy resources and the energy consumption.
- the illustration shows the first sub-board network 602, the second sub-board network 604, the third sub-board network 606 and the fourth sub-board network 608.
- the existing energy resources exceed the energy requirement (see FIG. 9).
- the energy demand exceeds the existing energy resources.
- the first and third sub-networks 602 and 606 are thus sources as defined above, the second and fourth sub-systems 604 and 608 are sinks. The energy must therefore be transported from the first and third sub-board networks 602 and 606 to the second and fourth sub-board networks 604 and 608.
- a DC-DC converter can be operated in three modes, namely no energy transfer, energy transfer in the forward or reverse direction.
- FIG. 10 shows possible solutions of optimization problems.
- the illustration shows in six blocks 700, 702, 704, 706, 708 and 710 the four sub-sub-networks 602, 604, 606 and 608, respectively.
- first arrow 720 energy flow of 1.681kWh from PNI to PN2
- second arrow 722 energy flow of 0.444kWh from PN2 to PN4
- Mode DC-DC converter 510 ( Figure 8): forward
- Mode DC-DC converter 512 ( Figure 8): off
- Mode toggle switch 520 ( Figure 8): connected to network 2
- first arrow 730 energy flow of 1.125kWh from PNI to PN2
- second arrow 732 energy flow of 0.571kWh from PN3 to PN4
- Mode DC-DC converter 510 ( Figure 8): forward Mode DC-DC converter 512 ( Figure 8): off
- Mode toggle switch 520 ( Figure 8): connected to network 3
- first arrow 740 energy flow of 1.681kWh from PNI to PN2
- second arrow 742 energy flow of 0.444kWh from PN2 to PN4
- third arrow 744 energy flow of 0.0kWh from PN2 to PN3
- Mode DC-DC converter 510 ( Figure 8): forward
- Mode DC-DC converter 512 ( Figure 8): forward
- Mode toggle switch 520 ( Figure 8): connected to network 2
- first arrow 750 energy flow of 1.125kWh from PNI to PN2
- second arrow 752 energy flow of 0.0kWh from PN2 to PN3
- third arrow 754 energy flow of 0.571kWh from PN3 to PN4
- Mode DC-DC converter 510 ( Figure 8): forward
- Mode DC-DC converter 512 ( Figure 8): forward
- Mode toggle switch 520 ( Figure 8): connected to network 3
- first arrow 760 energy flow of 0.937kWh from PNI to PN2
- second arrow 762 energy flow of 0.444kWh from PN2 to PN4
- third arrow 764 energy flow of 0.70kWh from PN3 to PN2
- Mode DC-DC converter 510 ( Figure 8): forward
- DC-DC converter 512 (FIG. 8): backward
- Mode toggle switch 520 ( Figure 8): connected to network 2
- first arrow 770 energy flow of 0.988kWh from PNI to PN2
- second arrow 772 energy flow of 0.129kWh from PN3 to PN2
- third arrow 774 Energy flow of 0.571kWh from PN3 to PN4
- Mode DC-DC converter 510 ( Figure 8): forward
- DC-DC converter 512 (FIG. 8): backward
- Mode toggle switch 520 ( Figure 8): connected to network 3
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Electric Propulsion And Braking For Vehicles (AREA)
Abstract
Description
Claims
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE102016220957.4A DE102016220957A1 (de) | 2016-10-25 | 2016-10-25 | Verfahren zum Betreiben eines Bordnetzes |
| PCT/EP2017/072583 WO2018077518A1 (de) | 2016-10-25 | 2017-09-08 | Verfahren zum betreiben eines bordnetzes |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| EP3532346A1 true EP3532346A1 (de) | 2019-09-04 |
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ID=59895288
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP17768410.7A Withdrawn EP3532346A1 (de) | 2016-10-25 | 2017-09-08 | Verfahren zum betreiben eines bordnetzes |
Country Status (4)
| Country | Link |
|---|---|
| EP (1) | EP3532346A1 (de) |
| CN (1) | CN109963750A (de) |
| DE (1) | DE102016220957A1 (de) |
| WO (1) | WO2018077518A1 (de) |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR3080073B1 (fr) * | 2018-04-12 | 2020-12-18 | Psa Automobiles Sa | Dispositif d’alimentation electrique auxiliaire pour vehicule |
| DE102020200249A1 (de) | 2020-01-10 | 2021-07-15 | Robert Bosch Gesellschaft mit beschränkter Haftung | Verfahren zum Betreiben eines Brennstoffzellensystems |
| EP4101676B1 (de) | 2021-06-09 | 2024-08-28 | Volvo Car Corporation | Überwachungssystem für fahrzeuge |
| DE102021205851A1 (de) | 2021-06-10 | 2022-12-15 | Robert Bosch Gesellschaft mit beschränkter Haftung | Verfahren zum Betreiben eines Bordnetzes |
| DE102021208257A1 (de) | 2021-07-29 | 2023-02-02 | Robert Bosch Gesellschaft mit beschränkter Haftung | Verfahren zum Betreiben eines Bordnetzes |
| DE102022128960A1 (de) | 2022-11-02 | 2024-05-02 | Bayerische Motoren Werke Aktiengesellschaft | Verfahren zum Betreiben einer Fahrzeugkomponente eines Kraftfahrzeugs mittels einer elektronischen Recheneinrichtung des Kraftfahrzeugs, Computerprogrammprodukt, computerlesbares Speichermedium, elektronische Recheneinrichtung sowie Kraftfahrzeug |
Family Cites Families (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE19838248A1 (de) * | 1998-08-22 | 2000-03-02 | Volkswagen Ag | Verfahren zur Ansteuerung elektrischer Verbraucher |
| DE19857916A1 (de) * | 1998-12-15 | 2000-06-21 | Bosch Gmbh Robert | Verfahren und Vorrichtung zur Steuerung von elektrischen Verbrauchern in einem Fahrzeug |
| DE10145270B4 (de) * | 2001-09-14 | 2006-05-04 | Audi Ag | Energiemanagementvorrichtung und verfahren zum Energiemanagement in einem Fahrzeug |
| US7173347B2 (en) * | 2002-10-15 | 2007-02-06 | Denso Corporation | Method and apparatus for driving and controlling on-vehicle loads |
| DE102004038741A1 (de) * | 2004-08-10 | 2006-02-23 | Robert Bosch Gmbh | Verfahren zum Verwalten des Energiebedarfs elektrischer Verbraucher in einem elektrischen Netz |
| DE102009000051A1 (de) * | 2009-01-07 | 2010-07-08 | Robert Bosch Gmbh | Verfahren zum Betreiben eines Bordnetzes mit mindestens zwei Bordteilnetzen |
| US10479298B2 (en) * | 2014-09-08 | 2019-11-19 | Mahindra Electric Mobility Limited | Intelligent determination and usage of energy in energy systems |
-
2016
- 2016-10-25 DE DE102016220957.4A patent/DE102016220957A1/de active Pending
-
2017
- 2017-09-08 WO PCT/EP2017/072583 patent/WO2018077518A1/de not_active Ceased
- 2017-09-08 EP EP17768410.7A patent/EP3532346A1/de not_active Withdrawn
- 2017-09-08 CN CN201780066151.9A patent/CN109963750A/zh active Pending
Also Published As
| Publication number | Publication date |
|---|---|
| DE102016220957A1 (de) | 2018-04-26 |
| CN109963750A (zh) | 2019-07-02 |
| WO2018077518A1 (de) | 2018-05-03 |
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