Mobile energy supply system with battery-prioritized energy export and automatic recharging unit

Abstract

Mobile energy supply system comprising: • at least one electrochemical energy storage device, • at least one external energy output interface for supplying external electrical consumers, • at least one motor-driven and / or otherwise powered electrical recharging unit for generating electrical energy, • and a control unit, characterized in that the control unit is designed such that an energy export requested at the energy output interface is primarily supplied from the electrochemical energy storage device, wherein the electrical recharging unit is primarily intended for recharging the electrochemical energy storage device and is activated automatically and / or in a user-configurable manner when at least one predetermined activation criterion is met, in particular when the electrochemical energy storage device falls below a defined state of charge (SoC).where energy export is maintained even during the activation of the electrical recharging unit.

Description

Technical field The invention relates to a mobile, self-sufficiently operable energy supply system for the electrical supply of external consumers. The system is intended in particular for applications in disaster relief, mobile work operations, in off-grid areas, for temporary energy needs or as a mobile or stationary energy source. State of the art Most well-known mobile power generators are based on continuously operated combustion engine-generator units. These systems exhibit high noise levels, inefficient partial load operation, and increased maintenance requirements. Hybrid energy supply systems are known in which an electrochemical energy storage system is combined with an internal combustion engine. However, in these systems the combustion engine is often operated depending on the load, in parallel with energy consumption, or continuously, resulting in continuous noise and emission pollution. Furthermore, systems are known in which an external grid connection is provided for charging an energy storage device. However, these systems are often not designed for autonomous, load- and condition-dependent operation in mobile application scenarios, or do not allow prioritized battery-supported energy export with a simultaneously activated recharging unit. Object of the invention The further object of the invention is to provide an energy supply system that can be flexibly adapted to different operating conditions, load requirements and energy sources without impairing the quiet operation at the place of use. Solution to the task The task is solved by an energy supply system that meets the protection requirements. The electrochemical energy storage system serves as the primary energy source for external energy export. The motor-driven electric recharging unit is not intended for the direct supply of external consumers, but primarily for recharging the electrochemical energy storage device. The control unit controls the operation of the recharging unit depending on defined activation criteria, in particular the state of charge of the electrochemical energy storage, time specifications, user-side configurations or operational boundary conditions. Furthermore, load-dependent parameters, time specifications, thermal states of the energy storage system or operational operating conditions can also be used as activation criteria. In preferred embodiments, it is provided that, when external electrical energy is available, in particular from a supply network, the energy storage device is primarily recharged from this external energy source. This enables largely quiet operation while ensuring long-term and reliable energy availability. Advantages of the invention • Reduced noise and emissions at the deployment site • High energy efficiency through battery-prioritized operation • Extended maintenance intervals for the recharging unit • Flexible integration into various mobile or stationary carrier systems • Scalability and expandability through modular architecture Summary The invention relates to a mobile energy supply system comprising an electrochemical energy storage device, an external energy output interface, and a motor-driven electric recharging unit. Energy is primarily exported from the electrochemical energy storage device, while the recharging unit is primarily activated for automatic and / or user-configurable recharging of the energy storage device, particularly when a defined state of charge is undershot. This enables largely quiet operation with simultaneously high energy availability. The system has a modular design and is suitable for mobile or stationary use. Exemplary embodiment of the invention - Character description for Figure 1 Figure 1 shows a block diagram of a modular power supply system. The system comprises an electrochemical energy storage device (1), a motor-driven electrical recharging unit (2), a control unit (3), and an energy output interface (4) for supplying external electrical loads. The energy storage device (1) is connected to the energy output interface (4) and, during operation, constitutes the primary energy source for energy export. The recharging unit (2) is coupled to the energy storage device (1) and serves to generate electrical energy for recharging the energy storage device (1). The control unit (3) is connected to the energy storage device (1) and the recharging unit (2) and, in particular, monitors the state of charge of the energy storage device (1). When the state of charge falls below a defined threshold or when other activation criteria are met, the control unit (3) activates the recharging unit (2) so that the energy storage device (1) is recharged, while energy export via the energy output interface (4) continues. The system components are preferably modular and arranged on or in a supporting structure, forming a compact, transportable unit suitable for stationary or mobile use. - Character description for Figure 2 Fig. 2 shows a schematic representation of the control logic of a modular energy supply system. A control unit (3) continuously records and monitors operating and status parameters of the energy supply system. Based on these parameters, activation criteria are checked, whereby fulfilling at least one activation criterion leads to the activation of a motor-driven recharging unit (2). If the activation criteria are not met, energy is continuously exported from an energy storage device (1). The logic shown is implemented as a continuous monitoring and decision-making process, so that the activation or deactivation of the recharging unit (2) is automatically adjusted depending on changing operating and state parameters. The control logic shown can additionally include load-dependent activation of the charging unit as well as deactivation when an upper charge level is reached or when the system is relieved. - Character description for Figure 3 Fig. 3 shows an exemplary modular arrangement of the system components of an energy supply system according to the invention in a transportable unit. The unit comprises at least one energy storage unit (1), one charging unit (2), one control and regulation unit (3) and one energy output interface (4). The spatial arrangement shown is merely exemplary; the modules can be combined in other arrangements, quantities or housing shapes without deviating from the inventive concept. Reference symbol list 1 Energy storage unit 2 Charging unit 3 Control and regulation unit 4 Energy output interface 5 Transportable unit Drawings Fig. 1 shows a block diagram of a power supply system according to the invention. Fig. 2 shows a schematic representation of a control logic for activating a recharging unit. Fig. 3 shows an exemplary modular arrangement of the system components in a transportable unit.

Claims

Mobile energy supply system comprising: • at least one electrochemical energy storage device, • at least one external energy output interface for supplying external electrical consumers, • at least one motor-driven and / or otherwise powered electrical recharging unit for generating electrical energy, • and a control unit, characterized in that the control unit is designed such that an energy export requested at the energy output interface is primarily supplied from the electrochemical energy storage device, wherein the electrical recharging unit is primarily intended for recharging the electrochemical energy storage device and is activated automatically and / or in a user-configurable manner when at least one predetermined activation criterion is met, in particular when the electrochemical energy storage device falls below a defined state of charge (SoC).where energy export is maintained even during the activation of the electrical recharging unit. Energy supply system according to claim 1, characterized in that the system comprises at least one further energy input for receiving external electrical energy, in particular from renewable energy sources and / or from an external electrical supply network, wherein the control unit is configured such that, when external electrical energy is available, the electrochemical energy storage is recharged primarily from this external energy source. Energy supply system according to one of the preceding claims, characterized in that the control unit, in addition to monitoring the state of charge of the electrochemical energy storage device, also records at least one load-dependent operating parameter, and the activation of the electrical recharging unit takes place depending on the requested electrical power, a continuous load, a peak load and / or a thermal load of the electrochemical energy storage device. Energy supply system according to one of the preceding claims, characterized in that the electrical recharging unit is arranged within a housing arrangement which includes means for reducing noise and / or vibration emissions, wherein the housing arrangement is designed in such a way that heat dissipation required for operation is ensured by air and / or liquid flow. Energy supply system according to one of the preceding claims, characterized in that the components of the system are arranged modularly on or in a supporting structure, forming a compact, transportable unit which is intended for stationary and / or mobile use, in particular for mounting on a trailer, a vehicle, a container or a comparable support structure.

Images