FR3142620A1 - CONNECTED ELECTRICAL CABINET - Google Patents

Abstract

CONNECTED ELECTRICAL CABINET The invention relates to an electrical cabinet (100) comprising: a direct current electrical circuit; an alternating current electrical circuit; an electrical energy accumulator (10); a set of internal electrical equipment comprising a connected converter electrically to the electrical energy accumulator (10) and intended to ensure the conversion of a direct electric current produced by at least one solar panel into an alternating electric current; a first switch (A1); a second switch (A2) ;a third switch (A3); characterized in that the first switch (A1), the second switch (A2) and the third switch (A3) are capable of being actuated independently so as to pass from their first states to their respective second states and vice versa independently. Figure for abstract: [Fig.1]

Description

CONNECTED ELECTRICAL CABINET Field of the invention

The field of the invention relates to the field of electrical energy distribution and storage systems.

In particular, the field of the invention relates to the field of electrical energy distribution systems, electrical energy storage, and management of electrical consumption in a building.

More particularly, the field of the invention relates to the field of electrical cabinets for the power supply, management and monitoring of electrical equipment in a home, a building, a gymnasium, a town hall or any other type of building likely to include equipment to be powered electrically.

State of the art

Electrical panels are known in the prior art, which are also known as electrical cabinets, or sometimes referred to in Anglo-Saxon literature as “home storage”. These electrical cabinets generally centralize electrical circuits and electronic components necessary for the routing and distribution of electrical current in a building.

Such electrical cabinets may include means of storing electrical energy and/or means making it possible to intermittently power equipment from direct or alternative energy sources, for example from a conversion of a current DC obtained from a solar energy source into alternating current by a DC/AC converter.

This is for example the case of application CN112615273, which describes an energy-saving distribution cabinet including solar panels. The distribution cabinet includes batteries and a converter ensuring the conversion of direct current from the production of solar panels into alternating current to charge the batteries and power a set of equipment in a building.

A disadvantage of existing electrical cabinets is that they do not sufficiently optimize energy consumption over time. This leads to additional costs on consumers’ energy bills.

Another disadvantage is that existing electrical cabinets do not allow the implementation of periodic or one-off maintenance without interrupting the electrical energy supply to the equipment to which the cabinet is connected.

Another disadvantage of prior art electrical cabinets is that their installation can be complex, and depends in particular on the type of electrical installation to which the cabinet is connected.

Another disadvantage of electrical cabinets of the prior art is that they do not allow continuity of production and storage of electricity even in the event of a power cut to external electrical equipment.

An objective of the invention is to limit at least one of the aforementioned drawbacks.

In particular, the invention makes it possible to ensure continuity in the power supply to the electrical equipment of a building even in the event of an outage on the electrical network or in the event of maintenance on equipment of an alternating current electrical circuit of the building. electrical cabinet.

In particular, the invention makes it possible to ensure continuity of electrical production and storage of electrical energy even in the event of isolation of an alternating current electrical circuit comprising electrical equipment of a building (for example to allow maintenance intervention on said equipment).

In particular, the invention is adapted to be connected to the entire pre-existing electrical panel of a building, whatever the size of the electrical panel and whatever the type of electrical panel.

• Un circuit électrique à courant continu ;
• Un circuit électrique à courant alternatif ;
• Au moins un accumulateur d’énergie électrique ;
• Un ensemble d’équipements électriques internes comprenant :
  • un convertisseur DC/AC connecté électriquement audit accumulateur d’énergie électrique et destiné à assurer la conversion d’un courant électrique continu produit par au moins un panneau solaire en un courant électrique alternatif ;
• un premier interrupteur apte à être dans un premier état fermé dans lequel il connecte électriquement les équipements électriques internes au circuit électrique à courant continu, et dans un deuxième état ouvert dans lequel il isole électriquement les équipements électriques internes du circuit électrique à courant continu ;
• un deuxième interrupteur apte à être dans un premier état fermé dans lequel il connecte électriquement le circuit électrique à courant alternatif à un ensemble d’équipements externe, et apte à être dans un deuxième état ouvert dans lequel il isole électriquement le circuit électrique à courant alternatif de l’ensemble d’équipements externes ;
• un troisième interrupteur apte à être dans un premier état dans lequel il connecte électriquement le circuit électrique à courant alternatif à l’accumulateur d’énergie électrique et à un réseau d’électricité externe, et dans un deuxième état dans lequel il connecte électriquement le circuit électrique à courant alternatif uniquement au réseau électrique externe,

As such, the invention relates to an electrical cabinet comprising:

• A direct current electrical circuit;
• An alternating current electrical circuit;
• At least one electrical energy accumulator;
• A set of internal electrical equipment including:
  • a DC/AC converter electrically connected to said electrical energy accumulator and intended to ensure the conversion of a direct electric current produced by at least one solar panel into an alternating electric current;
• a first switch capable of being in a first closed state in which it electrically connects the internal electrical equipment to the direct current electrical circuit, and in a second open state in which it electrically isolates the internal electrical equipment from the direct current electrical circuit;
• a second switch capable of being in a first closed state in which it electrically connects the alternating current electrical circuit to a set of external equipment, and capable of being in a second open state in which it electrically isolates the alternating current electrical circuit of the set of external equipment;
• a third switch capable of being in a first state in which it electrically connects the alternating current electrical circuit to the electrical energy accumulator and to an external electricity network, and in a second state in which it electrically connects the circuit alternating current electricity only to the external electricity network,

the first switch, the second switch and the third switch being capable of being actuated independently of each other by a user so as to move from their respective first states to their respective second states and vice versa independently.

An advantage is to allow an interruption of the electrical supply to a set of equipment in a building for the implementation of maintenance operations on this equipment on the one hand while continuing to ensure production and storage of electrical energy on the other hand.

Another advantage is to allow continuity of the electrical energy supply to equipment in a building while allowing the implementation of maintenance operations on the electrical cabinet and while ensuring continuity of storage of electrical energy in the battery.

Another advantage is to allow the implementation of maintenance operations on the solar panels and on the direct current electrical circuit while ensuring continuity in the electrical energy supply to the building equipment.

According to one embodiment, the electrical cabinet comprises a fourth switch capable of being in a first state in which it electrically connects the output of the alternating current electrical circuit to the set of external equipment and in which it electrically connects the circuit direct current electrical circuit to the electrical energy accumulator, and capable of being in a second state in which it isolates the direct current electrical circuit from the electrical energy accumulator and in which it isolates the alternating current electrical circuit of the set of external equipment.

An advantage is to allow the implementation of an emergency shutdown of the electrical energy supply of all the building equipment in a simple manner, for example for the implementation of maintenance operations on said equipment.

• des données d’une consommation électrique d’au moins un des équipements externes,
• des données de production de courant électrique dudit au moins un panneau solaire,
• des données relatives à une quantité d’énergie électrique stockée dans l’accumulateur d’énergie électrique sur un intervalle de temps prédéfini.
• Des données relatives à l’achat et à la revente d’énergie électrique sur le réseau électrique

According to one embodiment, the electrical cabinet comprises a computer configured to process:

• data on electrical consumption of at least one of the external devices,
• electric current production data from said at least one solar panel,
• data relating to a quantity of electrical energy stored in the electrical energy accumulator over a predefined time interval.
• Data relating to the purchase and resale of electrical energy on the electricity network

One advantage is that it makes it possible to monitor the electrical consumption of building equipment, for example to detect possible malfunctions.

• comparer au moins une valeur de température issue d’un signal transmis par le capteur de température avec une valeur seuil prédéfinie ;
• générer et émettre une commande d’actionnement de l’organe de refroidissement lorsque la valeur de température dépasse la valeur seuil prédéfinie.

According to one embodiment, the set of internal electrical equipment comprises at least one temperature sensor and at least one cooling member, said temperature sensor being configured to transmit signals comprising temperature measurements to the computer at time intervals predefined, said calculator being configured to:

• compare at least one temperature value from a signal transmitted by the temperature sensor with a predefined threshold value;
• generate and issue an actuation command for the cooling member when the temperature value exceeds the predefined threshold value.

One advantage is to optimize overall energy efficiency by reducing Joule effect losses in the electrical and electronic components of the cabinet.

• émettre des premiers messages de données via une liaison sans fil ou filaire vers au moins un équipement distant,
• recevoir un deuxième messages de données émis par l’équipement distant.

According to one embodiment, the electrical cabinet comprises a communication interface capable of:

• transmit first data messages via a wireless or wired link to at least one remote device,
• receive a second data message transmitted by the remote equipment.

An advantage is to allow the transmission of consumption data and the reception of data frames, such as data frames comprising instructions to be transmitted to the computer, for example in response to the transmitted consumption data.

• décoder ledit deuxième message de donnée pour extraire le signal de commande ;
• transmettre le signal de commande au calculateur ;

According to one embodiment, the second data message comprises an actuation signal of the first switch, the second switch and/or the third switch, the communication interface being configured to, when it receives the second data message:

• decode said second data message to extract the control signal;
• transmit the control signal to the computer;

• actionner le premier interrupteur, le deuxième interrupteur et/ou le troisième interrupteur en fonction du signal d’actionnement.

and in which the calculator is configured to:

• operate the first switch, the second switch and/or the third switch depending on the actuation signal.

An advantage is to allow remote control of the switches, for example by an administrator.

• des données de consommation électrique des équipements externes et/ou,
• des données relatives à un état de fonctionnement des équipements électriques internes ou des équipements externes.

According to one embodiment, the first data messages include:

• power consumption data from external equipment and/or,
• data relating to the operating state of internal electrical equipment or external equipment.

• deux parois latérales comprenant chacune une face interne ;
• un premier support mécanique comprenant deux rails, chaque rail étant fixé à la face interne desdites parois latérales, chaque rail supportant une portion l’accumulateur d’énergie électrique et les deux rails étant positionnés en regard l’un de l’autre.

According to one embodiment, the electrical cabinet comprises:

• two side walls each comprising an internal face;
• a first mechanical support comprising two rails, each rail being fixed to the internal face of said side walls, each rail supporting a portion of the electrical energy accumulator and the two rails being positioned facing each other.

According to one embodiment, the electrical cabinet comprises a bottom wall comprising a second mechanical support comprising a plurality of first fixing points cooperating mechanically with the internal electrical equipment.

An advantage is to allow an optimized arrangement of the electrical and electronic components of the cabinet.

According to one embodiment, the electrical cabinet comprises a plurality of third mechanical supports extending in a direction substantially parallel to said second mechanical support and comprising second fixing points adapted to cooperate with at least one piece of electrical equipment and/or with said second mechanical support.

• des données de consommations de l’accumulateur d’énergie électrique,
• des données d’une production d’énergie à partir d’au moins un panneau solaire,
• des données issues de mesures de températures provenant du capteur de température.
• un menu de paramétrage de l’armoire électrique.

According to one embodiment, the electrical cabinet comprises a user interface connected to the computer, said user interface comprising a screen and said computer being configured to generate at least one command to display on the screen:

• consumption data from the electrical energy accumulator,
• data on energy production from at least one solar panel,
• data from temperature measurements from the temperature sensor.
• a menu for configuring the electrical cabinet.

Brief description of the figures

Other characteristics and advantages of the invention will emerge on reading the detailed description which follows, with reference to the appended figures which illustrate:

: A front view of the electrical cabinet according to one embodiment in which it includes four switches.

: A rear view of the electrical cabinet in an embodiment in which it includes a plurality of fixing points for securing internal electrical equipment in the electrical cabinet.

: A profile view of the electrical cabinet according to one embodiment in which it comprises a plurality of internal electrical equipment and electrical energy accumulators supported by a plurality of supports.

: A schematic representation of the electrical cabinet in an embodiment in which the electrical cabinet includes a communications interface for exchanging data messages with a remote data server.

: An enlarged view of a user interface of the electrical cabinet in an embodiment in which the user interface includes a touch screen.

: A view of the electrical cabinet when installed within a building and electrically connected to a set of external electrical equipment via an alternating current electrical circuit.

Description of the invention Definitions

• Une armoire électrique 100 pour faire référence à un boîtier comprenant un ensemble de composants électriques et électroniques connectés électriquement entre eux, et destinés à assurer l’acheminement et la distribution du courant électrique vers différents équipements externes à l’armoire électrique 100, par exemple des équipements électroménagers installés dans un bâtiment.
• Un ensemble d’équipements électriques internes 120 pour faire référence à des composants électriques et électroniques connectés entre eux dans l’armoire électrique 100 et traversés par un courant électrique. Les équipements électriques internes 120 comprennent par exemple, et à titre non limitatif, des disjoncteurs, des interrupteurs, des convertisseurs, des régulateurs, des câbles et des parafoudres.
• Un ensemble d’équipements externes 200 pour faire référence à des équipements situés dans un bâtiment et alimentés électriquement par un courant électrique alternatif, soit issu d’une sortie de l’armoire électrique 100. Il s’agit par exemple, à titre non limitatif, de réfrigérateurs, de fours, de machines à laver, de radiateurs électriques ou de plaques à induction.
• Des interrupteurs pour faire référence à des organes de commandes dont l’actionnement entraîne une ouverture ou une fermeture d’un circuit électrique donné, par exemple un circuit électrique à courant continu ou un circuit électrique à courant alternatif.
• Un convertisseur DC/AC pour faire référence à un convertisseur qui convertit une tension continue en tension alternative.

In the remainder of the description, we define:

• An electrical cabinet 100 to refer to a housing comprising a set of electrical and electronic components electrically connected to each other, and intended to ensure the routing and distribution of electric current to different equipment external to the electrical cabinet 100, for example household appliances installed in a building.
• A set of internal electrical equipment 120 to refer to electrical and electronic components connected together in the electrical cabinet 100 and traversed by an electric current. The internal electrical equipment 120 includes, for example, and is not limited to, circuit breakers, switches, converters, regulators, cables and surge arresters.
• A set of external equipment 200 to refer to equipment located in a building and electrically powered by an alternating electric current, either from an output of the electrical cabinet 100. This is for example, without limitation , refrigerators, ovens, washing machines, electric heaters or induction hobs.
• Switches to refer to control elements whose actuation results in the opening or closing of a given electrical circuit, for example a direct current electrical circuit or an alternating current electrical circuit.
• A DC/AC converter to refer to a converter that converts direct voltage to alternating voltage.

This description is based on various embodiments. Several alternative embodiments are described for each of these embodiments. These variants can be applied indifferently to each of these embodiments. Thus, the characteristics described for one embodiment are directly applicable to another embodiment. The invention protects the different combinations of characteristics described through these embodiments.

There illustrates a case of an electrical cabinet 100 according to one embodiment of the invention in which it comprises four switches A ₁ , A ₂ , A ₃ and A ₄ .

DC circuit

The electrical cabinet 100 includes a direct current electrical circuit. The term “direct current electrical circuit” is understood to mean an electrical circuit in which voltage and current sources deliver constant signals.

The direct current electrical circuit allows the circulation of a direct electric current produced by one or more solar panels, for example solar panels installed on the roof of a building in which the electrical cabinet 100 is installed.

The solar panels comprise photovoltaic cells electrically connected in series and/or in parallel which make it possible to capture part of the solar radiation to convert it, by means of the photovoltaic cells, into direct electric current circulating in the direct current electrical circuit.

Electrical energy storage

The electrical cabinet 100 comprises an electrical energy accumulator 10. The electrical energy accumulator 10 makes it possible to store electrical energy, for example a direct electric current resulting from the production of one or more solar panels, and circulating in the direct current electrical circuit _. The electrical energy accumulator 10 is for example a battery, for example a lithium-ion battery. According to another example, the battery 10 is a solid electrolyte battery. This is, for example, an entirely solid-state silicon battery. However, the invention is not limited to the aforementioned battery technologies. Any type of accumulator or any other suitable means of storing electrical energy can be used within the framework of the invention.

According to a preferred embodiment, the electrical cabinet 100 comprises a plurality of electrical energy accumulators 10. This is for example an assembly of several batteries connected in parallel. According to another example, it is an assembly of several batteries connected in series. In both cases, the batteries 10 are electrically connected to each other by means of electrical cables in which a direct current flows.

According to one embodiment, several electrical energy accumulators 10 are connected to each other by means of a plurality of electrical cables. The electrical cables are, for example, split in two compared to a standard assembly. An assembly with a greater number of electrical cables to connect the batteries together is also possible within the framework of the invention.

An advantage of multiplying the number of cables electrically connecting the batteries to each other is to minimize energy losses when electric current passes through the cables, and therefore to maximize the electrical energy stored in the batteries.

Another advantage is to optimize the electrical efficiency of the electrical cabinet.

According to one embodiment, the electrical cabinet 100 comprises at least one support. The support makes it possible to support the electrical energy accumulator 10. The electrical cabinet 100 can also include a plurality of supports for supporting a plurality of electrical energy accumulators 10. The supports are for example arranged parallel to each other. The supports can take the form of racks. The supports are for example arranged in a lower portion of the electrical cabinet 100.

One advantage is to optimize the compactness of the electrical cabinet by optimizing the space occupied by the batteries in the electrical cabinet 100, and by freeing up space for other components.

AC circuit

The electrical cabinet 100 includes an alternating current electrical circuit. The term “alternating current electrical circuit” means an electrical circuit powered by an alternating source of voltage or current.

The alternating current electrical circuit allows the circulation of an alternating electric current to power equipment external to the electrical cabinet 100, such as for example a set of external equipment 200 which requires power supply from a current source alternative. This equipment is for example electrical equipment in a building, such as household appliances such as ovens, microwaves or washing machines, or any other equipment likely to be present in a building and requiring an electrical supply from an alternating current source, for example electric heaters.

The electrical circuit includes, for example, an input connected to an electrical network. The alternating current electrical circuit may also include an input connected to an output of the direct current electrical circuit, for example at the output of a direct current to alternating voltage converter.

Electrical equipment in the cabinet

The electrical cabinet 100 comprises a set of internal electrical equipment 120. By “a set of internal electrical equipment 120” is meant electrical equipment and/or electronic components connected together in the electrical cabinet 100, which make it possible to ensure routing and distribution of electric current to equipment external to the electrical cabinet 100, such as external equipment 200 which is for example household appliances in a building, or even electric heating equipment.

The internal electrical equipment 120 is for example electrically connected to each other following a series electrical arrangement. However, certain equipment may be connected to each other in a parallel arrangement, for example a plurality of converters electrically connected in a parallel arrangement.

The set of internal electrical equipment 120 includes a DC/AC converter 30 to ensure the conversion of direct current into alternating current. The DC/AC converter 30 is connected to at least one electrical energy accumulator 10. The DC/AC converter is for example electrically connected to an entry point of the alternating current electrical circuit.

The DC/AC converter 30 is intended to ensure the conversion of a direct electric current stored in at least one electrical energy accumulator 10 into an alternating electric current capable of circulating in the alternating current electrical circuit to power at least one external equipment 200.

The DC/AC converter 30 is for example a converter/charger type converter. This is for example a charger converter comprising a converter with an apparent electrical power of between 3kVA and 5kVA. The converter-charger includes, for example, an automatic transfer switch or “ATS”. In this case, the electrical cabinet 100 is for example connected to a generator. An advantage is to allow uninterrupted power supply to the most sensitive electrical equipment.

The maximum power of the converter is for example between 3700W and 4000W depending on the temperature. The input voltage range of the charger is for example between 50V and 400V, and the charging voltage is for example between 47V and 52V.

According to one embodiment, the set of internal electrical equipment 120 includes a DC/DC charger regulator. The DC/DC charger regulator is positioned between the solar panels and the electrical energy accumulator 10 in the direct current electrical circuit. This is, for example, a solar charge regulator. The solar charge regulator includes, for example, an integrated maximum power point search function, also referred to in the English literature by the name “maximum point tracking”, or by the acronym “MPPT”. Such a function makes it possible to constantly measure the maximum power that the panels can deliver as well as the maximum power that the battery can receive in order to optimize the voltage to obtain the most optimized performance.

According to one embodiment, the electrical cabinet 100 is connected to a generator and the set of internal electrical equipment 120 includes a converter/charger. The term “converter/charger” means equipment capable of implementing a voltage converter function and a battery charger function. This is for example a DC/AC charger converter comprising a converter with an apparent electrical power of between 3kVA and 5kVA and comprising a battery charger delivering a current of between 50A and 70A. The converter-charger includes, for example, an automatic transfer switch or “ATS”. An advantage is to allow uninterrupted power supply to the most sensitive electrical equipment.

The maximum power of the regulator-charger is for example between 3400W and 4000W depending on the temperature. The charging voltage is for example between 47V and 52V.

According to one embodiment, the set of internal electrical equipment 120 includes a direct voltage regulator. This is, for example, a solar charge controller. According to various examples, the charge controller may include a “shunt” type charge controller, a “series” type charge controller, or even an “MPPT” or “Maximum Power Point Tracker” type charge controller.

One advantage is to avoid damaging the batteries by adjusting the production of solar energy from the photovoltaic panels to the battery while avoiding untimely overloads or excessively deep discharges.

According to one embodiment, the set of internal electrical equipment 120 comprises at least one cooling member. The cooling members include, for example, one or more fans. The cooling members are for example arranged on a support in the electrical cabinet 100, for example a tray. The cooling members are for example positioned in the electrical cabinet 100 in an orientation such that they are capable of cooling, for example by convection, other internal electrical equipment 120 of the electrical cabinet 100 capable of heating by the Joule effect .

One advantage is to improve the overall energy performance of the system by reducing losses due to temperature increases in the electrical and electronic components.

According to one embodiment, the electrical cabinet 100 comprises at least one indicator light. This is, for example, an indicator light to indicate the presence of the electrical network. For example, the indicator light is in an “on” state when no problem is observed on the electrical network, and in an “off” state when a problem is observed on the electrical network, or vice versa. The indicator light can also be configured to display different colors depending on the state of the power grid.

According to one embodiment, the electrical cabinet 100 is configured to be connected in a three-phase arrangement and includes an indicator light for each phase.

Electrical cabinet switches

• Un premier état dans lequel il connecte le circuit électrique à courant continu aux équipements électriques internes 120 présents dans l’armoire électrique 100
• Un deuxième état dans lequel il isole les équipements électriques internes 120 présents dans l’armoire électrique 100 du circuit électrique à courant continu.

The electrical cabinet includes a first switch A ₁ . The first switch A ₁ is capable of being in two states:

• A first state in which it connects the direct current electrical circuit to the internal electrical equipment 120 present in the electrical cabinet 100
• A second state in which it isolates the internal electrical equipment 120 present in the electrical cabinet 100 from the direct current electrical circuit.

The A ₁ switch has several advantages. A first advantage is that the possibility of isolating the internal electrical equipment 120 from the direct current electrical circuit allows the implementation of secure maintenance operations on equipment in the direct current electrical circuit, for example on one or more solar panels. . Another advantage is that these maintenance operations can be implemented without interrupting the electrical energy supply to the external equipment 200. Indeed, in the case where the internal electrical equipment 120 of the electrical cabinet is isolated from the electrical circuit direct current, the external equipment 200 is powered either directly by the electrical network, or totally or partially by the electrical energy resulting from the production of one or more solar panels stored in one or more electrical energy accumulators 10 and circulating in the alternating current electrical circuit.

Another advantage of switch A ₁ is that it makes it possible to isolate the direct current circuit from the internal electrical equipment without turning off the DC/DC charger regulator.

• Un premier état fermé dans lequel il connecte électriquement une sortie du circuit à courant alternatif à l’ensemble d’équipements externes 200
• Un deuxième état ouvert dans lequel il isole électriquement la sortie du circuit électrique à courant alternatif de l’ensemble d’équipements externes 200.

The electrical cabinet includes a second switch A ₂ . The second switch A ₂ is capable of being in two states:

• A first closed state in which it electrically connects an output of the alternating current circuit to the set of external equipment 200
• A second open state in which it electrically isolates the output of the alternating current electrical circuit from the set of external equipment 200.

An advantage of the second switch A2 is that, when it is in the second open state, it is possible to intervene on one or more external equipment 200 without facing an electrical risk. Another advantage is that, when the second switch A ₂ is in the second open state, it is still possible to produce electricity from one or more solar panels and store it in one or more energy accumulators. electrical energy 10. Thus, maintenance operations can be carried out while continuing to produce and store electricity.

• Un premier état dans lequel il connecte électriquement le circuit électrique à courant alternatif à l’accumulateur d’énergie électrique 10 et à un réseau électrique externe ;
• Un deuxième état dans lequel il connecte électriquement le circuit électrique à courant alternatif uniquement au réseau d’électricité externe ;

The third switch A ₃ is capable of being in two states:

• A first state in which it electrically connects the alternating current electrical circuit to the electrical energy accumulator 10 and to an external electrical network;
• A second state in which it electrically connects the alternating current electrical circuit only to the external electricity network;

Thus, the third switch, when it is in its first state, allows the supply of electrical current to the alternating current circuit connected to the external equipment directly from the current stored in the electrical energy accumulator, and also allows that this power supply is supplemented by an electrical current supply from the electrical network. When the second switch is in its second state, it allows the supply of electrical current to the alternating current circuit only from the electrical network. In other words, in this configuration, the “electrical” cabinet is removed from the network, and the alternating current resulting from the conversion of direct current coming from the solar panels is not used to power the alternating current circuit.

An advantage is to allow the implementation of a maintenance mode on the electrical cabinet while ensuring continuity in the power supply of electrical equipment external to the cabinet, such as the domestic equipment of the building in which the cabinet is installed.

According to one embodiment, the electrical cabinet 100 includes a fourth switch A ₄ . The fourth switch A ₄ is configured to switch from a first state to a second state in which it isolates the external equipment 200 from the alternating current circuit and in which it isolates the set of internal electrical equipment 120 from the electrical current circuit. continuous. In other words, activation of the fourth switch A ₄ to switch it from a first state to a second state allows an emergency shutdown of the electricity supply to all of the external equipment 200 and the electrical energy accumulator 10 of the electrical cabinet 100 jointly.

According to one embodiment, the computer 101 comprises an actuating member configured to actuate the first switch A ₁ , the second switch A ₂ , the third switch A ₃ and/or the fourth switch A ₄ . This is for example made possible when the computer 101 receives an actuation signal. The actuation signal is for example transmitted to the computer 101 by the communication interface 102. This actuation signal comes for example from a second data message MES ₂ transmitted to the communication interface 102 by the remote equipment _E1 .

According to one embodiment, the calculator 101 is configured to process electric current production data from said at least one solar panel. These are, for example, values of electrical energy produced according to different parameters, such as meteorological parameters (e.g. sunshine) or even temporal parameters (such as an exposure period).

Three-phase mode

According to one embodiment, the electrical cabinet 100 is configured to be connected in a three-phase arrangement.

An advantage of three-phase mode is that it allows the supply and distribution of electrical energy in a building comprising equipment requiring high electrical power.

Another advantage is to reduce losses during the online transmission of electricity.

The three-phase assembly includes, for example, three phase conductors.

According to another example, the three-phase assembly comprises three phase conductors and a neutral conductor.

The neutral conductor presents an advantage in particular for unbalanced electrical installations (i.e. when the current circulating in each of the three phases is different and varies over time), to evacuate residual currents, so as to maintain the nominal voltage distribution in the three phase conductors. This is for example the case for buildings or even high-power domestic installations.

Another advantage of the neutral conductor in the three-phase assembly is to avoid excessive overvoltage in the circuits connected to external equipment 200 which could result in damage to said equipment and present an electrical risk for users.

Walls and mounting brackets

The electrical cabinet 100 comprises walls delimiting an interior volume in which the electrical circuits and the internal electrical equipment are arranged. This interior volume is for example delimited by walls, for example a bottom wall, side walls and a front wall.

According to one embodiment, the electrical cabinet 100 comprises at least a first mechanical support. The first mechanical support is configured to support at least one electrical energy accumulator 10. The electrical cabinet 100 may also comprise a plurality of first mechanical supports for supporting a plurality of electrical energy accumulators 10. The first mechanical supports are present for example in the form of racks. The first mechanical supports are for example mounted one above the other, for example in a lower portion of the electrical cabinet 100. Such a configuration advantageously makes it possible to optimize the compactness of the electrical cabinet 100.

According to one embodiment, the electrical cabinet 100 comprises two side walls each comprising an internal face on each of which at least one rail is fixed. The two rails are for example positioned opposite each other. The two rails are for example configured to support at least a portion of the electrical energy accumulator 10. According to another example, the two rails are configured to support at least a first mechanical support.

According to one embodiment, the electrical cabinet 100 comprises a bottom wall. The bottom wall comprises for example a second mechanical support comprising a plurality of first fixing points 121. The internal electrical equipment 120 each cooperates mechanically with a plurality of first fixing points 121. The mechanical cooperation 120 between the internal electrical equipment 120 and the first fixing points 121 is carried out for example by means of a screw. However, the invention is not limited to this single means of fixing, and any other suitable means of fixing can be implemented within the framework of the invention, for example a nail, a mechanical anchor or even a glue.

Advantageously, the second fixing points 121 are distributed on the bottom plate so as to allow an optimized arrangement of the internal electrical equipment 120 in the electrical cabinet. By “an optimized arrangement” is meant an arrangement of the internal electrical equipment 120 and the various electrical cables (allowing the circulation of electric current in the direct current electrical circuit and in the alternating current electrical circuit) making it possible to optimize the overall compactness of the electrical cabinet 100. Such an optimized arrangement advantageously makes it possible to reduce the bulk of the electrical cabinet 100 and also to optimize the passage of cables to reduce electrical losses and therefore improve overall energy efficiency.

According to one embodiment, the electrical cabinet 100 comprises a plurality of third mechanical supports which extend in a direction substantially perpendicular to the second mechanical support. Each third mechanical support comprises for example third fixing points 131 capable of cooperating with a lateral portion of at least one internal electrical equipment 120.

One advantage is that it allows attachment points to be added to the side edges of electrical equipment.

Computer and communication interface

According to one embodiment, the electrical cabinet 100 comprises a computer 101. The computer 101 is configured to generate actuation, control and/or control commands for one or more internal electrical equipment 120 as a function of predefined parameters , or in response to an action by a user; either locally by an interaction with a user interface, for example a push button, or in response to a data frame received and transmitted from at least one remote device E ₁ .

According to one embodiment, the computer is configured to generate a display command for a configuration menu of the electrical cabinet. The settings menu allows for example to configure different configuration elements of the electrical cabinet system, such as entering a Wi-Fi code, or even setting threshold values for the activation temperature of a cooling unit.

• Des données de consommation électrique d’au moins un équipement externe 200
• Des données relatives à un niveau de charge/décharge de l’accumulateur d’énergie électrique 10 sur un intervalle de temps prédéfini
• Des données relatives à une quantité d’énergie vendue et/ou achetée sur le réseau électrique sur un intervalle de temps prédéfini
• Des données relatives à une production d’énergie électrique par des panneaux solaires

According to one embodiment, the computer 101 is configured to generate commands according to a combination of parameters among the following parameters:

• Electricity consumption data from at least one external equipment 200
• Data relating to a charge/discharge level of the electrical energy accumulator 10 over a predefined time interval
• Data relating to a quantity of energy sold and/or purchased on the electricity network over a predefined time interval
• Data relating to the production of electrical energy by solar panels

Such commands may include commands for activating or deactivating internal electrical equipment 120, such as a fan, commands for actuating one or more switches, or even commands for generating a message. data, for example an alert to be sent to a remote server. According to one embodiment, the computer 101 comprises wired connection means to at least one other piece of equipment. This is for example equipment making it possible to establish a link between the computer 101 and a data network. This is for example an Ethernet connection.

According to one embodiment, the computer 101 comprises wireless connection means to at least one remote device E ₁ . This is for example a link allowing messages to be transmitted and/or received by radio or optical means using protocols such as Wi-Fi, Bluetooth, LoRa, 3G, 4G, 5G or any other protocol. data exchange via a wireless connection.

According to one embodiment, the computer 101 is configured to receive instructions and data frames via the wireless connection means to update one or more pieces of equipment in the electrical cabinet 100.

According to one embodiment, the computer 101 is configured to generate a control command for at least one internal electrical equipment 120 based on a request received by means of a communication interface 102 and from a remote equipment E ₁ . This is for example a control command for a cooling unit received from a remote server, for example initiated by an administrator.

According to one embodiment, the computer 101 is configured to automatically generate a control command for a cooling member in response to reception of a signal transmitted by a temperature sensor located in the electrical cabinet 100. In this case , the electrical cabinet 100 comprises for example the temperature sensor or a plurality of temperature sensors. The control command for the cooling member is for example generated when a temperature measured by the sensor exceeds a threshold value, for example 25°C. In this case, the computer receives the signal and decodes it to compare the temperature value with the threshold value and to initiate the control command or not depending on the result of the comparison.

One advantage is to optimize the electrical production of the system by limiting Joule effect losses.

According to one embodiment, the computer 101 is configured to generate an alert to be transmitted by a communication interface 102 in response to the reception of a plurality of signals transmitted by the temperature sensor detecting temperatures above a threshold value during a duration greater than a predefined time interval.

According to an illustrative example, the temperature sensor records a temperature of 30°C and transmits this measurement to the computer 101, which then generates a command to activate a cooling member. The temperature sensor then periodically transmits temperature readings that are above 25°C for 5 minutes. The computer 101 then automatically generates an alert which is transmitted by the communication interface 102 to remote equipment E ₁ , for example a user's smartphone or even a remote administration console.

An advantage is to alert a user or administrator of a system malfunction.

According to one embodiment, the computer 101 is configured to generate notifications relating to the state of at least one internal electrical equipment 120 of the cabinet 100. These are for example notifications relating to a state of charge/ discharge of an electrical energy accumulator 10, or even notifications relating to electrical consumption data or electrical production data.

According to one embodiment, the computer 101 is configured to generate activation commands for one or more indicator lights depending on the state of at least one internal electrical equipment 120 or the state of the current electrical circuit. direct current or alternating current electrical circuit _.

According to one embodiment, the computer 101 includes the communication interface 102.

User interface

According to one embodiment, the electrical cabinet 100 comprises a user interface 103. The user interface 103 allows for example a user to initiate control commands for equipment present in the electrical cabinet by means of an interface input, for example commands for actuation of switches A ₁ , A ₂ , A ₃ , A ₄ . The user interface 103 is for example connected to the computer 101. The user interface 103 is for example configured to transmit commands to the computer 101 in response to an action by a user on the input interface.

According to one case, the user interface 103 includes a touch screen. The computer 101 is for example configured to generate an actuation command for at least one piece of equipment present in the electrical cabinet 100 in response to a touch command from the user on the screen. These may be actuation commands for a cooling member, actuation commands for a switch, for example to open or close direct current and/or alternating current electrical circuits.

According to one embodiment, the user interface 103 is configured to display at least one electrical consumption curve and/or at least one charge/discharge curve of the electrical energy accumulator 10. The calculator 101 is for example configured to generate a transmission command to remote equipment E ₁ , by means of the communication interface 102, consumption curves and/or charge/discharge curves of the electrical energy accumulator 10, either at time intervals regular, either in response to a user command via the input interface, or when a curve crosses a predefined threshold value.

According to one embodiment, the computer is configured to display, on the user interface 103, a menu for setting at least one piece of equipment present in the electrical cabinet 100. This is for example a menu for setting threshold values for actuation temperatures of a cooling member, or even a menu for setting a maximum discharge percentage of the electrical energy accumulators 10.

According to one embodiment, the computer is configured to display, on the user interface 103, remote control information for the electrical cabinet 100. According to one example, the electrical cabinet 100 is controlled from a remote server SERV connected to a NET data network.

• Isoler un circuit électrique à courant continu et permettre par exemple la mise en œuvre d’opérations de maintenance tout en assurant une continuité dans l’alimentation d’équipements électrique externes à l’armoire via un circuit électrique à courant alternatif ;
• Isoler un circuit électrique à courant alternatif, par exemple pour une intervention sur des équipements externes à l’armoire et raccordés audit circuit électrique à courant alternatif, tout en assurant une continuité dans une production et un stockage d’énergie électrique à partir d’une source d’énergie alternative externe, par exemple photovoltaïque ;
• Effectuer un retour à un réseau d’électricité, par exemple pour permettre la mise en œuvre d’opérations de maintenance sur l’armoire électrique, tout en assurant une continuité dans l’alimentation des équipements électriques externes connectés au circuit électrique à courant alternatif.

In summary, the invention relates to a compact electrical cabinet, simple to install within any building, compact and simple to install, and comprising at least three switches operable independently and in a logical and intuitive manner for a user for either:

• Isolate a direct current electrical circuit and allow, for example, the implementation of maintenance operations while ensuring continuity in the power supply of electrical equipment external to the cabinet via an alternating current electrical circuit;
• Isolate an alternating current electrical circuit, for example for intervention on equipment external to the cabinet and connected to said alternating current electrical circuit, while ensuring continuity in the production and storage of electrical energy from a external alternative energy source, for example photovoltaic;
• Perform a return to an electricity network, for example to allow the implementation of maintenance operations on the electrical cabinet, while ensuring continuity in the power supply of external electrical equipment connected to the alternating current electrical circuit.

Claims (10)

Electrical cabinet (100) comprising:

• A direct current electrical circuit;
• An alternating current electrical circuit;
• At least one electrical energy accumulator (10);
• A set of internal electrical equipment (120) comprising:
  • a DC/AC converter (30) electrically connected to the electrical energy accumulator (10) and intended to ensure the conversion of a direct electric current produced by at least one solar panel into an alternating electric current;
• a first switch (A ₁ ) capable of being in a first closed state in which it electrically connects the internal electrical equipment (120) to the direct current electrical circuit, and in a second open state in which it electrically isolates the internal electrical equipment ( 120) of the direct current electrical circuit;
• a second switch (A ₂ ) capable of being in a first closed state in which it electrically connects the alternating current circuit to a set of external equipment (200), and capable of being in a second open state in which it electrically isolates the alternating current circuit of the external equipment set (200);
• a third switch (A ₃ ) capable of being in a first state in which it electrically connects the alternating current electrical circuit to the electrical energy accumulator (10) and to an external electrical network, and capable of being in a second state in which it electrically connects the alternating current electrical circuit only to the external electrical network,

characterized in that the first switch (A₁), the second switch (A₂) and the third switch (A₃) are capable of being actuated independently of each other by a user so as to move from their respective first states to their respective second states and vice versa independently. Electrical cabinet (100) according to claim 1, comprising a fourth switch (A₄) capable of being in a first state in which it electrically connects the output of the alternating current electrical circuit to the set of external equipment (200), and in which it electrically connects the direct current electrical circuit to the accumulator electrical energy (10), and capable of being in a second state in which it isolates the direct current electrical circuit from the electrical energy accumulator (10), and in which it isolates the alternating current electrical circuit from the set of external equipment (200). Electrical cabinet (100) according to any one of the preceding claims, comprising a computer (101) configured to process:

• data of electrical consumption of at least one of the external equipment (200)
• electric current production data from said at least one solar panel,
• data relating to a quantity of electrical energy stored in the electrical energy accumulator (10) over a predefined time interval.
• Data relating to the purchase and resale of electrical energy on the electrical network.

Electrical cabinet (100) according to claim 3, in which the set of internal electrical equipment (120) comprises at least one temperature sensor (11) and at least one cooling member (12), said temperature sensor being configured to transmit signals comprising temperature measurements to the computer (101) at predefined time intervals, said computer (101) being configured to:

• compare at least one temperature value from a signal transmitted by the temperature sensor with a predefined threshold value;
• generate and issue an actuation command for the cooling member (12) when the temperature value exceeds the predefined threshold value.

Electrical cabinet according to any one of claims 3 to 4, comprising a communication interface (102) capable of:

• transmit first data messages (MES ₁ ) via a wired or wireless link to at least one remote device (E ₁ ),
• receive a second data message (MES ₂ ) transmitted by the remote equipment (E ₁ ).

Electrical cabinet according to claim 5, in which the second data message (MES₂) includes an actuation signal of the first switch (A₁), the second switch (A₂) and/or the third switch (A₃), the communication interface (102) being configured to, when it receives the second data message (MES₂):

• decode said second data message (MES ₂ ) to extract the control signal;
• transmit the control signal to the computer;

and in which the calculator is configured to:

• activate the first switch (A₁), the second switch (A₂) and/or the third switch (A3) depending on the actuation signal.

Electrical cabinet according to any one of claims 5 to 6, in which the first data messages (MES₁) include:

• power consumption data of external equipment (200) and/or,
• data relating to an operating state of internal electrical equipment (120) or external equipment (200).

Electrical cabinet according to any one of the preceding claims, comprising:

• two side walls (150,160) each comprising an internal face;
• a first mechanical support (110) comprising two rails (151,161), each rail being fixed to the internal face of said side walls (150, 160), each rail supporting a portion of the electrical energy accumulator (10) and the two rails (151,161) being positioned facing each other.

Electrical cabinet according to any one of the preceding claims, comprising a bottom wall (170) comprising a second mechanical support (120) comprising a plurality of first fixing points (121) cooperating mechanically with the internal electrical equipment (120). Electrical cabinet according to any one of claims 4 to 9, comprising a user interface (103) connected to the computer (101), said user interface (103) comprising a screen and the computer (101) being configured to generate at least one command to display on the screen:

• consumption data of the electrical energy accumulator (10),
• data on energy production from at least one solar panel,
• data from temperature measurements coming from the temperature sensor,
• a menu for configuring the electrical cabinet (100).