FR3165119A1 - Rechargeable mobile power station - Google Patents

Abstract

The invention relates to a rechargeable mobile power station (100) for supplying power to at least one electrically consuming device, which includes a rechargeable internal power source (4). The rechargeable mobile power station is designed to operate in a charging and a discharging configuration. In the charging configuration, the rechargeable internal power source is charged by means of at least one first external source delivering single-phase alternating current, and optionally by means of at least one second external source, for example, a solar panel, delivering direct current. In the discharging configuration, the rechargeable internal power source discharges to supply power to at least one electrically consuming device. Abstract figure: Figure 2

Description

Rechargeable mobile power station

The invention relates to a rechargeable mobile power station.

It relates more particularly to a rechargeable mobile power supply station comprising an internal rechargeable electrical source: capable of being charged by at least one first external source delivering single-phase alternating current, and optionally by at least one second external source delivering direct current; and delivering a single-phase alternating output current having an output power.

The invention also relates to a rechargeable power supply system comprising several rechargeable mobile power supply stations connected in parallel, which rechargeable power supply system being capable of delivering a total single-phase alternating current output having a total output power equal to the sum of the output powers of the single-phase alternating currents output from each of the rechargeable mobile power supply stations.

The invention finds a favorite, but not limiting, application for the power supply of at least one single-phase electrical consumer device, and which can for example be used in the fields of Building and Public Works, Events, etc.

As is well known, rechargeable mobile power stations are self-contained power supply devices used in various sectors, such as construction and public works, and event management. These rechargeable mobile power stations include an internal rechargeable power source that generates a power signal to supply electrical devices connected to the stations. These devices are typically located in areas where the electrical grid is unavailable, particularly outdoors. By design, this type of power station offers the advantage of being easily portable.

For rechargeable mobile power stations, there is a constant need to offer a satisfactory compromise between: its size, its mobility, the charging capacity of the internal rechargeable electrical source, and the power of the power signal delivered.

To this end, the invention proposes a rechargeable mobile power supply for powering at least one electrically consuming device, the rechargeable mobile power supply station comprising:

- at least one initial input socket designed for connection to a first external source that delivers single-phase alternating current,

- at least one AC-DC converter having an input electrically connected to at least one first input socket and an output, and converting the single-phase alternating current into a first external direct current,

- an inverter with an input and an output,

- an internal rechargeable power source comprising one or more rechargeable batteries,

- a distribution line having at least one end electrically connected to the output of at least one AC-DC converter, a second end electrically connected to the internal rechargeable power source, and a third end electrically connected to the input of the inverter,

- one or more output sockets, each electrically connected to the inverter output, and designed for electrical connection to at least one electrically consuming device;

the rechargeable mobile power station comprising a control unit which is at least in communication with the internal rechargeable power source, and which is configured to switch the rechargeable mobile power station between:

- a charging configuration, during which the internal rechargeable electrical source is charged by a direct current charging current, which includes at least the first external direct current delivered on the output of at least one AC-DC converter and flowing from at least one first end to the second end of the distribution line, and

- a discharge configuration, during which the internal rechargeable electrical source generates an internal direct current which flows from the second end to the third end of the distribution line, and is then converted by the inverter into a single-phase alternating output current electrically powering at least one consuming electrical device.

Hereafter and unless otherwise indicated, "station" means "rechargeable mobile power station".

In accordance with French electrical installation standards, at least one first input socket may, for example, include at least one 16 A socket or at least one 32 A socket for an electrical voltage of 230 V (this voltage corresponds to the voltage of the single-phase low-voltage distribution network in France). Similarly, at least one output socket may include at least one 16 A socket or at least one 32 A socket. The maximum potential power on at least one first input socket is therefore either 3.68 kW or 7.32 kW.

At least one AC-DC converter has an AC-DC saturation power. To prevent single-phase AC current from being delivered by at least one first external source at a power close to this maximum potential power, which could damage at least one first input outlet, at least one AC-DC converter is chosen so that its AC-DC saturation power is less than the maximum potential power.

In other words, at least one AC-DC converter is chosen according to the type of at least one first input socket to which it is electrically connected, i.e. whether the at least one first input socket corresponds to a 16 A socket or a 32 A socket.

Thus, the single-phase alternating current delivered by at least one first external source has a power less than or equal to the saturation power of the AC-DC converter, and therefore less than the maximum potential power.

The inverter, for its part, has a saturation power such that the power of the internal direct current delivered by the internal rechargeable electrical source is less than or equal to the saturation power of the inverter.

The distribution line may, for example, include:
- a positive busbar having at least one first positive end electrically connected to a positive output terminal of at least one AC-DC converter, a second positive end electrically connected to a positive terminal of the internal rechargeable power source, and a third positive end electrically connected to a positive terminal of the inverter, and
- a negative busbar having at least one first negative end electrically connected to a negative output terminal of at least one AC-DC converter, a second negative end electrically connected to a negative terminal of the internal rechargeable electrical source, and a third negative end electrically connected to a negative terminal of the inverter;
at least one first positive end and at least one first negative end being assimilable to at least one first end of the distribution line, the second positive end and the second negative end being assimilable to the second end of the distribution line, and the third positive end and the third negative end being assimilable to the third end of the distribution line.

As mentioned above, the control unit is at least in communication with the internal rechargeable electrical source for the purpose of controlling and monitoring it.

It is also designed to control the switching of the station between its charging and discharging configurations. In one embodiment, the station includes, for example, a switch button with a press position and a release position, such that each station configuration is associated with a position of the switch button. The switch button is at least in communication with the control unit, if not electrically connected to it. Thus, when an operator presses the switch button to change it from its press position to its release position, or vice versa, the control unit receives a command signal related to the position of the switch button and controls the switching of the station from one of its two configurations to the other.

The control unit can be configured, for example, to receive a variety of information relating to, but not limited to:
- at least one rechargeable battery included in the internal rechargeable power source, such as: its charge level, the voltage across its terminals or across the terminals of each of the modules or cells it comprises, the number of charge/discharge cycles it has undergone, its temperature, etc.; or
- the distribution line, such as the direct current for charging and the internal direct current that flows inside respectively during the charging configuration and the discharging configuration.

The control unit can, for example, be responsible for monitoring the direction of the charging DC current during the charging configuration and that of the internal DC current during the discharging configuration. If the charging DC current does not flow from at least one end to the second end, or if the internal DC current does not flow from the second end to the third end, then the control unit is configured to shut down the station.

The control unit could, for example, be a battery management system (BMS). The battery management system might include a screen for displaying the aforementioned information. In one variation, the screen could be a touchscreen that the user can interact with, for example, to switch the station from its charging to its discharging configuration, and vice versa; this touchscreen control replacing the traditional switch button.

The control unit can also be an electronic board that includes a processor and can optionally be connected to a screen.

In one embodiment of the invention, the control unit is positioned between the second and third ends of the busbar. It is then connected in series with the inverter. When the distribution line comprises a positive busbar and a negative busbar, the control unit is positioned between the second negative end and the third negative end of the negative busbar. In other words, the control unit is electrically connected on one side to the negative terminal of the internal rechargeable power source, and on the other side to the negative terminal of the inverter.

Advantageously, the electrical architecture of the station is based on the combination of simple electrical equipment allowing to power electrical consumer devices with single-phase alternating output currents with satisfactory output powers, while making it easily portable/transportable.

According to one embodiment of the invention, the distribution line comprises a first switch that electrically connects at least one first end and the second end, and a second switch that electrically connects the second end to the third end, and the control unit is in communication with the first switch and the second switch such that: - in the load configuration, the control unit drives the first switch to be in a closed position, and drives the second switch to be in an open position, and
- in the discharge configuration, the control unit drives the first switch to be in an open position, and drives the second switch to be in a closed position.

In other words, in the charging configuration, the inverter is not electrically connected to the distribution line, since the second switch is in its open position. The internal rechargeable power source is connected only to at least one external power source, and the DC charging current flows from this external source to the internal rechargeable power source to charge it. In the discharging configuration, since the first switch is in its open position, the external power source is not electrically connected to the distribution line. The internal rechargeable power source is connected only to the inverter; and the internal DC current flows from the internal rechargeable power source to the inverter to be converted by the inverter into a single-phase AC output, which will ultimately power at least one electrical device.

In one embodiment, the control unit is configured to switch the first switch from its open position to its closed position and the second switch from its closed position to its open position when it switches the station from its discharge configuration to its charge configuration. Conversely, the control unit is configured to switch the first switch from its closed position to its open position and the second switch from its open position to its closed position when it switches the station from its charge configuration to its discharge configuration.

In one embodiment of the invention, during the charging configuration, the control unit can advantageously switch the first switch from its closed position to its open position in order to stop the charging of the internal rechargeable power source should a malfunction of the station occur. Similarly, if the station is operating during the discharging configuration, the control unit can stop the power supply to at least one electrically consuming device by switching the second switch from its closed position to its open position.

According to one feature of the invention, the rechargeable mobile power station includes at least one second input socket provided for connection with a second external source that delivers a direct current, and wherein the rechargeable mobile power station includes at least one DC-DC converter having an input electrically connected to at least one second input socket and an output for converting the direct current into a second external direct current, said output of at least one DC-DC converter being electrically connected to at least one other first end of the distribution line; such that when the rechargeable mobile power station is in its charging configuration, the internal rechargeable power source is charged by the charging direct current which includes the second external direct current delivered on the output of at least one DC-DC converter and which flows from at least one other first end to the second end of the distribution line.

Advantageously, the station's internal rechargeable power source can also be electrically charged, during the charging setup, by means of at least:
- a first external source, i.e., a single-phase alternating current power supply; or
- a second external source, i.e. a direct current power supply.

The internal rechargeable power source can therefore, for example, be charged simultaneously by at least one external source and at least one external source. Thus, the DC charging current can correspond to a sum of the at least one external DC current and the at least one external DC current.

At least one DC-DC converter is a current regulator which advantageously stabilizes at least one second external DC current supplied by at least one second external source.

At least one second external source could, for example, be one or more solar panels that convert solar energy into electrical energy.

When at least one second external source corresponds to one or more solar panels, at least one DC-DC converter can correspond, for example, to a solar regulator of the MPPT (Maximum Power Point Tracking) type.

According to one embodiment of the invention:
- at least one first input socket includes several first input sockets,
- at least one AC-DC converter includes several AC-DC converters, and
- at least one first end of the distribution line includes several first ends;
such that each of the several AC-DC converters is connected respectively at the input to one of the first several input sockets and is connected respectively at the output to one of the first several ends.

In other words, and advantageously, during the charging configuration, the internal rechargeable power source can be recharged by several external power sources. Each of these external power sources is electrically connected to a separate AC-DC converter from among the several AC-DC converters by being plugged into a separate input socket from among the several input sockets.

Each AC-DC converter then delivers an initial external DC current to the distribution line. Thus, the DC charging current used to recharge the internal rechargeable power source corresponds to the sum of these initial external DC currents.

In one embodiment, when at least one second external source is also electrically connected to the station, then the DC charging current is equal to the sum of the first external DC currents with the at least one second external DC current.

According to one embodiment of the invention:
- at least one first input socket includes several first input sockets,
- at least one AC-DC converter comprises a single AC-DC converter,
- at least one first end of the distribution line includes a first end connected to the output of the single AC-DC converter, and
The rechargeable mobile power station includes an electrical switch with several inputs connected respectively to the first several input sockets, and a single output electrically connected to the input of the single AC-DC converter; the electrical switch allowing selection of which of its several inputs is connected to its output.

In other words, in one embodiment, the multiple AC-DC converters that the station might include are replaced by a single AC-DC converter combined with an electrical switch to which the first several external sources are connected via the first several input sockets. Advantageously, the electrical switch reduces the number of AC-DC converters required in the station, thus improving its portability and mobility.

The chosen electrical switch is, for example, a switch with a saturation power of 7.5 kW so that its inputs are suitable for both 16 A input sockets and 32 A input sockets.

In one variant, the electrical switch is controlled by the control unit. The selection of the first external source from among several initial external sources to be electrically connected to the single AC-DC converter via the electrical switch then depends on control signals transmitted by the control unit to the electrical switch. For example, the control unit can automatically select one of the first external sources based on information it receives relating to the charge level of the internal rechargeable electrical source and the single-phase AC current (or its power) capable of being delivered by each of the several initial external sources. In other words, the control unit ensures that the internal rechargeable electrical source is charged by means of a first external source delivering a single-phase AC current appropriate to its current charge level, so as not to overload it.

Another advantage of the electrical switch is that no current (or voltage) feedback occurs at the first input outlets that are not electrically connected to a first external source, thus protecting an operator against electrical hazards.

According to one embodiment of the invention, the internal rechargeable electrical source comprises four rechargeable batteries electrically connected to each other in a 2P2S configuration in which two subsets are connected in parallel, each comprising two rechargeable batteries connected in series.

Connecting two rechargeable batteries in series advantageously increases their voltage without increasing their capacity; whereas connecting two sets of batteries in parallel advantageously increases the total capacity of the internal rechargeable power source as well as its lifespan. The total capacity of the internal rechargeable power source is equal to twice the capacity of a single set of batteries if all the batteries are identical (i.e., of the same type).

According to one embodiment of the invention, the internal rechargeable electrical source comprises four rechargeable batteries connected in series.

According to one embodiment of the invention, the rechargeable battery or batteries are associated with a temperature measuring device to measure a battery temperature, and with a heating system connected to a thermal regulation system which is configured to send a heating setpoint to the heating system based on the battery temperature measured by the temperature measuring device in order to maintain the battery temperature within a predefined temperature range.

It is well known that certain battery technologies, such as NMC (Nickel, Manganese, Cobalt) batteries, perform optimally when their battery temperature is within a predefined range, for example, between 20°C and 25°C. Outside this temperature range, the performance of these battery technologies is degraded. A battery temperature that is too low or too high can also lead to premature battery aging.

In embodiments where such battery technologies are considered, and in order to address this issue during charging and discharging configurations, at least one battery of the internal rechargeable electrical source is associated with a temperature measurement device, such as a temperature sensor for example, and with a heating system, for example an electric heating pad.

The heating device is at least in communication with a thermal control system (or electrically connected to it), which thermal control system is also at least in communication with the temperature measurement device to receive a measurement of the battery temperature of at least one rechargeable battery. Based on the measured battery temperature, the thermal control system transmits a heating setpoint to the heating system of at least one rechargeable battery in order to maintain the temperature of at least one rechargeable battery within the temperature range for which its operation is optimal.

In one embodiment, the thermal control system is configured, for example, to:
- not to transmit a heating instruction to the heating device of at least one rechargeable battery when the measured battery temperature is greater than or equal to a low temperature threshold; and
- transmit a heating instruction to the heating device of at least one rechargeable battery when the measured temperature is below the low temperature threshold.

In the second case, the thermal regulation system can, for example, command the heating device to: heat at least one rechargeable battery until its temperature reaches a high temperature threshold and then, once this high temperature threshold is reached; and no longer heat at least one rechargeable battery until its temperature falls below the low temperature threshold.

The lower temperature threshold can, for example, be equal to 17°C, and the upper temperature threshold can, for example, correspond to ambient temperature (i.e., 25°C).

When the internal rechargeable power source includes multiple rechargeable batteries, each rechargeable battery has its own temperature sensor and heating element. Each temperature sensor transmits the battery temperature of its associated rechargeable battery to the thermal control system. Based on the received battery temperature readings, the thermal control system can send a heating command to one or more heating elements if their associated battery temperature is below the low temperature threshold.

According to one embodiment of the invention, the heating system of the rechargeable battery or batteries and the thermal regulation system are electrically connected to at least one first input outlet via an internal power line to allow power supply from the first external source.

In other words, at least one first input socket is used to send the single-phase alternating current delivered by at least one first external source on the one hand to the AC-DC converter (so that it is converted into a first external DC current); and on the other hand to the heating device of at least one rechargeable battery and to the thermal regulation system via the internal power line.

When the station includes, for example, several first input sockets, each connected to an AC-DC converter, one of them is connected both electrically to the AC-DC converter, to the heating device of at least one rechargeable battery, and to the thermal regulation system (via the internal power line); the other first input sockets are electrically connected only to their respective AC-DC converter.

In one embodiment, the internal power supply line includes a switch such that one terminal of said switch is electrically connected to at least one first input socket, and its other terminal is electrically connected to the heating device of at least one rechargeable battery and to the thermal control system. The switch is configured to be in a closed position as long as the battery temperature measured by the heating device of at least one rechargeable battery does not become equal to or greater than a critical temperature. If this occurs, the switch is configured to switch from its closed position to its open position so that the heating device of at least one rechargeable battery and the thermal control system are no longer electrically powered. Such a situation can occur, for example, if the thermal control system malfunctions and continuously transmits a heating command to the heating device of at least one rechargeable battery when the battery temperature is equal to or greater than the high temperature threshold, thereby causing the battery to overheat.

This critical temperature can, for example, be equal to 40°C.

In one variation, the switching of the switch from its open to its closed position is controlled by the control unit, which is, for example, in communication with the temperature measuring device of at least one rechargeable battery. This device transmits the measured battery temperature to the control unit. Once the measured temperature is received, the control unit compares it with the critical temperature to determine whether or not to trigger the switch to open. When the internal rechargeable power source includes several rechargeable batteries, the control unit triggers the switch to open if at least one battery temperature measurement, among the multiple battery temperature measurements it receives from the various temperature measuring devices, is above the critical temperature.

In another variant, the switch is a thermal contact configured to measure a battery temperature of at least one rechargeable battery, and to switch from its closed position to its open position if the measured battery temperature becomes greater than or equal to the critical temperature.

According to one embodiment of the invention, the rechargeable mobile power station comprises:

- a current measuring device designed to measure and transmit to the control unit the DC charging current during the charging configuration or the internal DC current during the discharging configuration, and
- one or more voltage measuring devices which are associated with the respective rechargeable battery or batteries to measure and transmit to the control unit a voltage at the terminals of the respective rechargeable battery or batteries;
the control unit being configured to determine a charge level associated with the rechargeable battery or batteries based on: their corresponding voltage and DC charging current during the charging configuration, or their corresponding voltage and internal DC current during the discharging configuration.

The current measurement device can, for example, be a shunt positioned at the distribution line.

In one embodiment, the control unit is also configured to determine, for example, the total charge level of the internal rechargeable electrical source.

In one embodiment of the invention, the rechargeable mobile power station includes the current measuring device but does not include a voltage measuring device. The voltage measurement of the rechargeable battery or batteries is performed directly by the control unit, which is, for example, wired directly to the rechargeable battery or batteries, for example, by means of a wire harness.

In one embodiment of the invention, the voltage measurement device(s) associated with the respective rechargeable battery(ies) are configured to measure and transmit to the control unit a voltage across each module of the rechargeable battery to which it is associated, or a voltage across each cell within each module of the rechargeable battery to which it is associated. From the DC charging current or the internal DC current, and the voltage measurements across each module or cell within the rechargeable battery(ies), the control unit then determines the voltage across said rechargeable battery(ies).

According to one embodiment of the invention, the control unit is configured to, in the charging configuration, compare the charge level of the or each of the several rechargeable batteries with a maximum charge level, and to stop the charging of the internal rechargeable electrical source when the charge level of the or each of the several rechargeable batteries becomes greater than or equal to the maximum charge level.

By stopping the charging of the internal rechargeable power source when the charge level of the or one of the several rechargeable batteries reaches the maximum charge level, the control unit advantageously prevents any risk of battery overcharging.

In the embodiment for which the first switch and the second switch are provided in the distribution line, the control unit can, for example, during the charging configuration, command the opening of the first switch to stop the charging of the internal rechargeable electrical source when the charge level of the or each of the several rechargeable batteries becomes greater than the maximum charge level.

According to one embodiment of the invention, the control unit is configured to, in the discharge configuration, compare the charge level of the or each of the several rechargeable batteries with a minimum charge threshold, and to stop the power supply to at least one consumer device by the internal rechargeable power source when the charge level of the or each of the several rechargeable batteries becomes below the minimum charge threshold.

Thus, any risk of a complete discharge of the or one of the several rechargeable batteries of the internal rechargeable electrical source is advantageously avoided.

In the embodiment for which the first switch and the second switch are provided in the distribution line, the control unit can, for example, during the discharge configuration, command the opening of the second switch to stop the supply of at least one electrical consuming device when the charge level of the or each of the several rechargeable batteries becomes below the minimum charge threshold.

According to one embodiment of the invention, the internal rechargeable electrical source comprises several rechargeable batteries, and the control unit is configured to, in the discharge configuration, control that the several rechargeable batteries discharge simultaneously.

When multiple rechargeable batteries do not discharge simultaneously, the control unit is configured to stop the power supply to at least one electrically consuming device.

In one embodiment of the invention, the station includes an emergency stop button which an operator presses to manually shut down the station, whether it is in its charging or discharging configuration. For example, pressing the emergency stop button can cause the first switch (or second switch) to switch from its closed position to its open position when the station is operating in its charging configuration (or discharging configuration).

According to one embodiment of the invention, the rechargeable mobile power station includes at least one third input socket provided for connection with a third external source and electrically connected to the output socket(s), so as to be able to power at least one consumer device directly from the third external source by bypassing the inverter.

In other words, at least one third external power source is electrically connected directly to the output socket(s) via at least one third input socket; the station can then be considered as a single wire. This at least third external power source could, for example, be a single-phase alternating current power supply.

Advantageously, at least one third external source can be used, during the charging configuration, to electrically power at least one electrically consuming device while at least one first external source, and optionally at least one second external source, are used to charge the internal rechargeable electrical source.

In one embodiment of the invention, the rechargeable mobile power station includes at least one fourth input socket for electrically connecting an alerting device to the control unit, which can then control said alerting device. The alerting device can, for example, be used to alert an operator to a low charge level in the battery or batteries included in the internal rechargeable power source. Thus, when the control unit determines that the charge level of the rechargeable battery or batteries in the internal rechargeable power source falls below the minimum charge threshold, the control unit transmits an activation signal to the alerting device. The alerting device can, for example, be an audible alert device such as an alarm. The alerting device can also be, for example, a flexible electroluminescent strip.

According to one feature of the invention, the rechargeable mobile power station comprises a mobile chassis on which are arranged at least one first input socket, at least one AC-DC converter, the inverter, the internal rechargeable power source, the distribution line, one or more output sockets and the control unit.

Advantageously, thanks to its mobile chassis, all the equipment comprising the station is easily moved and transported. A single station can therefore be used, depending on the needs, to power electrical devices located on the same site but in different locations, or located in different sites. This mobility also allows for electrical connection as close as possible to at least one electrical device, while eliminating installation/removal constraints in areas or locations with limited surface area or volume.

According to one embodiment of the invention, the inverter has an inverter saturation power of between 7 and 11 kW, and for example equal to 7.2 kW or equal to 11 kW.

In one particular embodiment, the station provides a single-phase alternating current output with a power output of up to 7.2 kW to power at least one electrical device. In a second particular embodiment, the station provides a single-phase alternating current output with a power output of up to 11 kW to power at least one electrical device.

Thus, the station advantageously provides electrical power to consumer electrical devices with single-phase alternating output currents offering satisfactory output powers, while being easily transportable thanks to an architecture based on the association of simple electrical equipment.

According to one embodiment of the invention, the rechargeable mobile power station includes a geolocation device shaped to geolocate the rechargeable mobile power station, and a transmitter connected to the geolocation device and controlled by the control unit to transmit geolocation data from the geolocation device to a remote server.

Geolocation contributes to simplified management by an operator of a fleet of stations, through the knowledge it provides regarding the areas where they are stored and the intervention areas where they are used.

Geolocation data can, for example, be transmitted to the remote server by the sender using a communication protocol compatible with the 4G standard.

According to one embodiment of the invention, the rechargeable mobile power station includes at least one parallelization socket connected to an inverter processing unit.

The invention also relates to a rechargeable power supply assembly for powering at least one electrically consuming device, the rechargeable power supply assembly comprising:
- several rechargeable mobile power supply stations, each including at least one parallel connection socket as previously mentioned; and
- a parallelization box comprising several input sockets and at least one output socket which is connected to the several input sockets;
in which:
- each of the several rechargeable mobile power stations has at least one parallel connection socket which is connected to at least one parallel connection socket of at least one other rechargeable mobile power station, so that the inverter processing units of the several rechargeable mobile power stations are interconnected,
- each of the several rechargeable mobile power stations has at least one output socket which is connected to one of the several input sockets of the parallelization box, so that the several rechargeable mobile power stations are connected in parallel;
such that the inverter processing unit of one of the several rechargeable mobile power stations, which operates as the master inverter, generates and then transmits a synchronization signal to the inverter processing unit of the other(s) rechargeable mobile power stations, which operates as the slave inverter, in order to:
- to synchronize in frequency and intensity the single-phase alternating output currents that the several rechargeable mobile power supply stations deliver to their corresponding input sockets of the parallelization box, each of which single-phase alternating output currents has a given output power, then
- deliver on at least one output socket of the parallelization box a total single-phase alternating current output having a total output power corresponding to the sum of the output powers of the single-phase alternating currents output from the several rechargeable mobile power supply stations.

The parallelization box may include, for example, a distribution line having input ends each electrically connected to a separate input socket among the several input sockets of the parallelization box; and at least one output end electrically connected to at least one output socket of the parallelization box.

Advantageously, the rechargeable power supply system allows, in a simple way, by parallelizing stations together via their at least one parallelization socket on the one hand, and then connecting them to the input of the parallelization box on the other hand, to power at least one electrical consumer device connected to the output of the parallelization box with a single-phase alternating current total output having a total output power corresponding to the sum of the output powers of the single-phase alternating currents from the several rechargeable mobile power supply stations.

Furthermore, as the rechargeable power supply unit results from the combination of several stations and a parallelization box, it can be easily transported, installed/assembled or uninstalled/disassembled.

In order to deliver a single-phase alternating output current to their respective input socket of the parallelization box, each of the several stations operates in its discharge configuration.

In one embodiment, the multiple input sockets of the parallelization box include six input sockets; meaning that it is possible to put six stations in parallel.

In one variant, each of the six stations delivers, for example, a single-phase alternating current output with an output power of 7.2 kW. Thus, the rechargeable power supply system is capable of providing at least one electrical consumer device with a total single-phase alternating current output with a total output power of 43.2 kW.

In another variant, each of the six stations delivers, for example, a single-phase alternating current output with an output power of 11 kW. Thus, the rechargeable power supply system is capable of providing at least one electrical consumer device with a total single-phase alternating current output with a total output power of 66 kW.

At least one output socket on the parallelization box is selected to be suitable for such total output power. For example, at least one output socket on the parallelization box could be a 90 A socket.

In order for the output powers of the single-phase alternating output currents to be summed, it is necessary that said single-phase alternating output currents be synchronized in both frequency and intensity.

Hereafter and unless otherwise indicated, the term "master station" means the station that includes the master inverter, and the term "slave station" means the station that includes the slave inverter.

In one embodiment, the stations included in the rechargeable power supply assembly each comprise several parallel outlets. The stations include a master station and several slave stations. The processing units of the master inverter and the slave inverters are connected, for example, such as:
- each of the slave stations has one of its several parallel ports electrically connected to a separate parallel port of the master station. In other words, the processing unit of the master inverter transmits the synchronization signal to the processing unit of each of the slave inverters; or
- The master station and the slave stations are cascaded as follows: a parallel connection on the master station is electrically connected to a parallel connection on a slave station, which is then electrically connected via another parallel connection to a parallel connection on a possible additional slave station. In other words, the processing unit of the master inverter transmits the synchronization signal to the processing unit of a slave inverter, which, upon receiving the synchronization signal, may then relay it to the processing unit of another slave inverter.

Upon receiving the synchronization signal, the processing units of the slave inverters synchronize the frequency and current of the single-phase AC output they are to generate based on the synchronization signal. Thus, their respective single-phase AC output is synchronized with that to be generated by the master inverter. Following synchronization, each of the slave inverters delivers its synchronized single-phase AC output to at least one of its output sockets, which must be electrically connected to one of the several input sockets of the parallelization box.

Other features and advantages of the present invention will become apparent from the following detailed description, of a non-limiting example of implementation, made with reference to the accompanying figures in which:

FIG. 1 is a schematic view of a front face of a box of the station of the invention, with some of its equipment accessible to an operator from the outside;

FIG. 2 is a simplified schematic view of the electrical architecture of the station according to a first embodiment;

FIG. 3 is a schematic view of the internal rechargeable electrical source according to a first embodiment, and which is included in the electrical architecture of the illustrated station FIG. 2 ;

FIG. 4 is a simplified schematic view of the electrical architecture of the station FIG. 2 , when it is operating in its charging configuration, with external power sources electrically connected to its input sockets for the purpose of charging the internal rechargeable electrical source;

FIG. 5 a simplified schematic view of the electrical architecture of the station FIG. 2 or of the FIG. 4 , when it operates in its discharge configuration, with electrically consuming devices electrically connected to its output sockets in order to be electrically powered by a single-phase alternating output current delivered by said station, the single-phase alternating output current being generated following the conversion of an internal direct current delivered by the internal rechargeable electrical source;

FIG. 6 is a simplified schematic view of the electrical architecture of the station according to a second embodiment;

FIG. 7 is a schematic view of the internal rechargeable electrical source according to a first embodiment, and which is included in the electrical architecture of the illustrated station FIG. 6 ;

FIG. 8 is a simplified schematic view of a rechargeable power supply assembly comprising a parallelization box having input sockets to which several stations can be electrically connected via their output sockets to put them in parallel, the parallelization box also having at least one output socket to which is electrically connected an electrical consuming device which can then receive a total single-phase alternating output current having a total output power equal to the sum of the output powers of the single-phase alternating output currents that each of the stations is capable of supplying.

[Detailed description of one or more embodiments of the invention]

With reference to the FIG. 1 The rechargeable mobile power station 100 is housed in a casing 101 containing its electrical components. Various elements or equipment of station 100 are accessible to an operator from the outside, such as, but not limited to:
- a plurality of input sockets including at least one first input socket P1, at least one second input socket P2, at least one third input socket P3, at least one output socket PS, at least one parallelization socket PP, at least one fourth input socket (not illustrated);
- a screen 51 displaying a plurality of information relating to station 100, and which may for example be touch-sensitive;
- a switch button 8;
- an EB emergency stop button, and a start button (not shown) for switching the station on or off; and
- at least one circuit breaker (not shown).

The roles/functionalities of each of the listed elements or equipment are then specified.

The 101 box of station 100 is placed on a mobile chassis (not shown).

With reference to the FIG. 2 at 5, an electrical architecture of station 100 according to a first embodiment is illustrated in a simplified manner.

In this embodiment, at least one first input socket P1 comprises two first input sockets P1; at least one second input socket P2 comprises a second input socket P1; at least one third input socket P3 comprises a third input socket P3; at least one output socket comprises two output sockets PS. For clarity and understanding of the simplified electrical architecture of station 100, only one parallelization socket is shown.

Circuit breakers, not shown, are positioned at the PS output sockets and the second P2 input socket to protect them.

The first input sockets P1 are each intended to electrically connect to station 100 a first external source S11, S12 which delivers a single-phase alternating current IA1, IA2. The first external source S11, S12 can, for example and not limited to, correspond to the electrical network or a generator set.

It is assumed that one of the first two P1 input sockets is a 32 A socket, while the other of the first two P1 input sockets is a 16 A socket. As the voltage of the single-phase low voltage distribution network in France is equal to 230V, the maximum potential power on the 16 A socket is equal to 3.68 kW, and that on the 32 A socket is equal to 7.32 kW.

Each of the first input sockets P1 is electrically connected to the input of a separate AC-DC converter 1, which is intended to convert the single-phase alternating current IA1, IA2 into a first external direct current IC11, IC12. In order to prevent the first external sources S11, S12 from delivering single-phase alternating current IA1, IA2 at a power close to the maximum potential power, which could damage the first input sockets P1, each of the AC-DC converters 1 is chosen so as to have an AC-DC converter saturation power that is less than the maximum potential power associated with the type of the first input socket P1 (by type, we mean 16 A socket and 32 A socket).

The second input socket P2 is designed to electrically connect a second external source S2 to station 100, which delivers a direct current ICS2. This second external source is assumed to be a solar panel that converts solar energy into electrical energy. The second input socket P2 is electrically connected to the input of a DC-DC converter 2, which converts the direct current ICS2 into a second external direct current IC2. More precisely, the DC-DC converter 2 is a solar charge controller of the MPPT (Maximum Power Point Tracking) type, whose function is to stabilize the direct current ICS2 supplied by the second external source S2 (the second external direct current IC2 thus corresponds to the stabilized direct current ICS2).

Station 100 includes an inverter 3 with an output electrically connected to the PS output sockets, and with an inverter saturation power considered to be 11 kW. Inverter 3 includes a processing unit U3. The functions of inverter 3 and its processing unit U3 are detailed below.

Station 100 also includes an internal rechargeable power source 4, which comprises four identical rechargeable batteries 41 (i.e. of the same reference).

Hereafter, and unless otherwise indicated, "internal source 4" means "rechargeable internal electrical source 4", and "batteries 41" means "rechargeable batteries 41".

Station 100 includes a distribution line having several first ends electrically connected to the output of each AC-DC converter 1 and DC-DC converter 2, a second end electrically connected to the internal source 4, and a third end electrically connected to the input of the inverter 3.

More specifically, the distribution line includes:
- a rigid positive busbar L1 having first positive ends L11 electrically connected to a positive output terminal of each of the AC-DC converters 1 and a positive output terminal of the DC-DC converter 2, a second positive end L12 electrically connected to a positive terminal of the internal source 4, and a third positive end L13 electrically connected to a positive terminal of the inverter 3, and
- a rigid negative busbar L2 having first negative ends L21 electrically connected to a negative output terminal of each of the AC-DC converters 1 and a negative output terminal of the DC-DC converter 2, a second negative end L22 electrically connected to a negative terminal of the internal source 4, and a third negative end L23 electrically connected to a positive terminal of the inverter 3;
the first several positive ends L11 and the first several negative ends L21 correspond to the first ends of the distribution line, the second positive end L12 and the second negative end L21 correspond to the second distribution end, and the third positive end L13 and the third negative end L23 correspond to the third distribution end.

The distribution line includes a first switch I1 that electrically connects its first several ends to its second end, and a second switch I2 that electrically connects its second end to its third end. More specifically, the first switch I1 is positioned on the positive busbar L1 between the first positive ends L11 and the second positive end L12; and the second switch I2 is also positioned on the positive busbar L1 between the second positive end L12 and the third positive end L13.

Station 100 includes a control unit 5 which is at least electrically connected, if not in communication, with: the internal power supply 4; the two switches I1 and I2; the display 51; the switching button 8, the emergency stop button EB, and the start button. The control unit 5 is positioned at the negative bus bar L2, electrically connected on one side to the negative terminal of the internal power supply 4, and electrically connected on the other side to the negative terminal of the inverter 3.

In this embodiment, control unit 5 corresponds to a battery management system (BMS).

The control unit is configured to switch station 100 between two so-called load configurations (illustrated) FIG. 4 ) and discharge (illustrated FIG. 5 ).

In the load configuration, the first external sources S11, S12 and the second external source S2 are electrically connected respectively to the first input sockets P1 and the second input socket P2.

As previously explained, AC-DC converters 1 convert the single-phase AC currents IA1, IA2 delivered by the first external sources S11, S12 into a first external DC current IC11, IC12; and DC-DC converter 2 stabilizes the DC current ICS2 supplied by the second external source S2 into a second external DC current IC2.

The control unit 5 commands the first switch I1 to be in its closed position, and the second switch I2 to be in its open position. Thus, a DC charging current ICT, which corresponds to the sum of the first external DC currents IC11, IC12 and the second external DC current IC2, propagates in the distribution line from its first ends to its second end, i.e., to the internal source 4. The DC charging current ICT thus charges the internal source 4. More precisely, the DC charging current ICT simultaneously charges the four batteries 41 contained within the internal source 4.

In the discharge configuration, the first external sources S11, S12 and the second external source S2 are disconnected from station 100, and two electrically consuming devices CD1, CD2 are electrically connected separately to one of the two output sockets PS. It is expected that the four batteries 51 of the internal source 4 will discharge simultaneously.

In this configuration, the control unit 5 commands the first switch I1 to switch from its closed position to its open position, and the second switch I2 to switch from its open position to its closed position. Thus, the internal source is capable of delivering an internal direct current ICC which will propagate from the second end of the distribution line to its third end, that is, to the input of the inverter 3. The inverter then converts the internal direct current ICC into a single-phase alternating current output IAS which will be used to power the two electrical devices consuming CD1, CD2, with the single-phase alternating current output IAS having an output power less than or equal to the inverter's saturation power (therefore less than or equal to 11 kW).

In the described embodiment, the control unit switches station 100 from its charging configuration to its discharging configuration, and vice versa, depending on the position of the switch button 8, which can be either pressed or released, such that each configuration is associated with one or the other of the two positions. In other words, station 100 switches from one of its two configurations to the other when an operator manually presses or releases the switch button. In an alternative embodiment where the screen 51 is touch-sensitive, the operator triggers the switch between the two configurations by interacting, for example, with options in a menu displayed on the screen 51. In such an alternative, the station does not need to include the switch button 8.

Control unit 5 is configured to monitor the direction of flow of the load DC current ICT during the charging configuration and that of the internal DC current ICC during the discharging configuration. If the load DC current ICT does not flow from the first end of the distribution line to its second end, the control unit stops the charging of the internal source 4 by switching the first switch I1 from its closed position to its open position. If the internal DC current ICC does not flow from the second end of the distribution line to its third end, control unit 5 stops the power supply to the electrical devices CD1 and CD2 by switching the second switch I2 from its closed position to its open position.

The station includes a third input socket P3 designed to electrically connect a third external source to the output sockets PS. This third external source is a single-phase AC power supply, similar to the first external sources S11 and S12. The third input socket P3 can be either a 16 A or a 32 A socket. Thus, in the described embodiment, the two electrical devices CD1 and CD2 would be powered directly by the third external source, bypassing the inverter 3. In other words, in this usage context, the station 100 can be considered a simple wire. In the load configuration, the third external source can be used to power the two devices CD1 and CD2, while the first external sources S11 and S12 and a second external source S2 are used to charge the internal source 4.

The control unit 5 receives a measurement of the load DC current value ICT and a measurement of the internal DC current value ICC from a current measuring device 9 positioned at the distribution line, such as a shunt.

With reference to the FIG. 3 The four 41 batteries are electrically connected in a known 2P2S configuration. The technology chosen for the four 41 batteries is NMC (Nickel, Manganese, Cobalt). This type of battery technology offers optimal performance when its temperature is within a predefined range. Otherwise, performance is degraded outside this temperature range. A battery temperature that is too low or too high can also lead to premature aging of the 41 batteries.

To address this issue of performance depending on battery temperature, each of the four batteries 41 is connected to: a temperature measurement device 42, such as a temperature sensor, to measure the battery temperature of battery 41, and a heating system 43, such as an electric heating pad. Station 100 also includes a thermal control system 7 that is at least in communication with the temperature measurement devices 42 and the heating device 43 of each of the four batteries 41. Each temperature measurement device 42 transmits the battery temperature measurement of the battery 41 to which it is connected to the thermal control system 7. Based on this battery temperature measurement, the thermal control system 7 either transmits, or does not transmit, a heating command to the heating system 43 connected to the battery 41 corresponding to the battery temperature measurement. If the heating device 43 receives this heating command, it is configured to heat battery 41.

In the described embodiment, the optimal operating range of an NMC-type battery 41 is considered to be between 17°C and 25°C. Therefore, the thermal control system 7 is configured to:
- not to transmit a heating instruction to a heating device 43 if the battery temperature of its associated battery 41 is greater than or equal to 17°C; and
- transmit a heating command to a heating device 43 if the battery temperature of its associated battery 41 is less than 17°C; the heating command continuing to be transmitted by the thermal control system 7 to the heating device 43 as long as the battery temperature does not reach 25°C; and no longer being transmitted once the battery temperature is equal to 25°C.

In order to thermally regulate the batteries 41, more specifically to dissipate/evacuate to the outside the heat they produce during charge and discharge configurations to prevent them from overheating, some walls of the box 101 include ventilation slots in which fans are placed (the slots and fans are not shown).

The thermal regulation system 7 and the heating systems 43 of the batteries 41 are electrically powered by means of an internal power line LT connected to the first input socket P1 which corresponds to the 32 A socket. Thus, the single-phase alternating current IA1 supplied by the first external source S1 is converted by the AC-DC converter 1 into the first external DC current IC1 on the one hand, and serves to supply the thermal regulation system 7 and the heating systems 43 on the other hand.

The internal power supply line LT includes a switch I3, which is a thermal switch, such that one terminal of said switch I3 is electrically connected to the first input socket P1, and its other terminal is electrically connected to the heating devices 43 and the thermal control system 7. The switch is configured to be in a closed position as long as the battery temperature of at least one of the four batteries 41 does not become equal to or greater than a critical temperature, which is considered to be 40°C. If the battery temperature of one of the four batteries 41 becomes greater than or equal to the critical temperature, the switch I3 is configured to switch from its closed position to its open position so that the heating devices 43 of the four batteries 41 and the thermal control system 7 are no longer electrically powered. Such a situation can occur for example in the event of a malfunction of the thermal regulation system 7 which would continuously transmit a heating setpoint to a heating device 43 of a battery 41 when the latter has a battery temperature greater than or equal to 25°C.

In addition to possessing knowledge of the charging direct current ICT and the internal direct current ICC, the control unit 5 knows the voltage across the terminals of the four batteries 41 by being connected to them by a wire harness 52. In variants, the wire harness 52 electrically connects the control unit 5 to the different modules, or to the different cells, of each battery 41. The control unit 5 is then able to determine the voltage of each of the batteries from the voltage measurements of their modules or their cells.

From the DC charging current ICT (respectively the internal DC current ICC), the voltage of the batteries 41 or the module or cell voltages of each of the batteries 41, the control unit 5 is able, during the charging configuration (respectively during the discharging configuration), to determine the charge level of each of the batteries 41, and the total charge level of the internal source 4.

In the charging configuration, the control unit 5 is configured to compare the charge level of each of the four batteries 41 with a maximum charge level, and to stop charging the internal source 4 by controlling the first switch I1 to switch from its closed position to its open position when the charge level of at least one of the batteries 41 becomes greater than or equal to the maximum charge level, thus preventing any risk of battery overcharging. This maximum charge level could, for example, correspond to a charge percentage of 100%.

In the discharge configuration, the control unit 5 is configured to compare the charge level of each of the batteries 41 with a minimum charge threshold, and to stop the power supply of the electrical consumer devices CD1, CD2 by the internal source 4, by commanding the second switch I2 to switch from its closed position to its open position, when the charge level of at least one of the batteries 41 becomes below said minimum charge threshold, thus preventing any risk of battery discharge.

The control unit 5 is also configured to monitor, during the discharge configuration, that the four batteries 41 discharge simultaneously. If this is not the case, it stops the power supply to the electrical consuming devices CD1, CD2.

An operator can also manually stop the charging of the internal source 4 during the charging configuration, and the power supply to the electrical consuming devices CD1 and CD2 during the discharging configuration, by pressing the emergency stop button EB. The control unit 5 then detects a press of the emergency stop button EB and shuts down station 100. The operator can then restart station 100 by pressing the start button.

As previously mentioned, the station 100 may include at least one fourth input socket for electrically connecting an alerting device to the control unit 5. The alerting device may, for example, be used to warn an operator of a low charge level in the internal power source 4, or in at least one of its four batteries 41. Thus, when the control unit 5 determines that the charge level of the internal power source 4, or that of one of its four batteries 41, falls below the minimum charge threshold, it transmits an activation signal to the alerting device. The alerting device may be a flexible electroluminescent strip that illuminates upon receiving the activation signal.

Station 10 may also include a geolocation device (not shown) configured to geolocate station 100, and a transmitter (not shown) connected to the geolocation device and controlled by the control unit 5 to transmit geolocation data from the geolocation device to a remote server (not shown), for example according to a communication protocol compatible with the 4G standard.

Screen 51 can display a variety of information that can be viewed by the operator, for example, but not limited to:
- the value of the DC load current ICT and the value of the internal DC current ICC;
- the charge level of the internal source 4 and the voltage across its terminals;
- the charge level of each of the batteries 41 and the voltage at their terminals;
- the voltage across each of the modules or each of the cells of the four batteries 41;
- the number of charge and discharge cycles to which each of the four batteries was subjected;
- the predefined temperature range in which the 41 batteries offer optimal performance;
- the battery temperature of each of the four batteries 41.

A second electrical architecture of station 100 is illustrated. FIG. 6 In this embodiment, the station is provided to integrate a single AC-DC converter 1, and several first external sources S11, S12 can be electrically connected to the station 100. An electrical switch 6 having several inputs and a single output is positioned in the electrical architecture such that: its several inputs are electrically connected to the several first input sockets P1, and its output is electrically connected to the input of the AC-DC converter 1.

Thus, the electrical switch 6 allows selection of which first external source S11, S12 will come to charge the internal source 4 during the charging configuration.

The selected electrical switch 6 has a saturation power of 7.5 kW so that its inputs are suitable for electrical connection to both 16 A and 32 A sockets.

In order to avoid overloading the internal source 4, the control unit 5 can control the electrical switch 6 to electrically connect one of the first external sources S11, S12 to the AC-DC converter 1 according to the current load level of the internal source 4, so that the DC load current ICT delivered to it 4 is in accordance with said load level.

Compared to the previous architecture, and with reference to the FIG. 7 The internal power source 4 of this second electrical architecture comprises four batteries 41 connected in series. The battery technology considered is LFP (Lithium Iron Phosphate). Unlike NMC technology, the performance of LFP batteries is not affected by battery temperature. Therefore, the second electrical architecture of station 100 does not include a thermal regulation system 7, an internal power line LT, or the batteries 41 are not associated with heating devices 43. Optionally, temperature measurement devices 42 (not shown in the diagram) may be included. FIG. 7 ) can measure the battery temperatures of each of the batteries 41 and transmit this temperature measurement to the control unit 5, which will then display the battery temperature values on the screen 51 for informational purposes for the operator.

In this second electrical architecture, the control unit 5 is not connected by a wire harness to the batteries 41 or to each of their modules or cells in order to measure battery, module, or cell voltages. The voltages across the terminals of the batteries 41, or across the terminals of each of their modules or cells, are measured by voltage measuring devices 10 that are at least in communication with the control unit 5.

In this second embodiment of station 100, the control unit is an electronic board including a processor.

Inverter 3 of this second electrical architecture is chosen such that it has an inverter saturation power of 7.2 kW.

Similar to the first electrical architecture, that of the second embodiment may include an emergency stop button EB, a switching button 8, a start button, at least one parallelization socket PP, at least one third input socket P3, at least one fourth input socket, etc.

Such electrical architectures for Station 100 advantageously allow for the powering of CD1 and CD2 consumer electrical devices with single-phase AC output currents (IAS) offering satisfactory output power, while relying on the combination of simple electrical equipment and components, making Station 100 easily portable. The station can also be electrically connected very close to the CD1 and CD2 consumer electrical devices, eliminating installation/removal constraints in areas or locations with limited surface area or volume.

The two electrical architectures presented are given in an illustrative and non-limiting manner.

In one embodiment, it is possible to connect several stations 100 in parallel to supply at least one electrical consumer device CD1, CD2 with a single-phase alternating current output total IAST, which has a total output power PT equal to the sum of the output powers of the alternating currents delivered by the several stations. Connecting the stations 100 in parallel is made possible by means of a parallelization unit 200; the several stations 100 and the parallelization unit then form a rechargeable power supply unit 300.

There FIG. 8 This illustrates an example of paralleling three stations 100. Each of the three stations 100 operates in its discharge configuration and delivers, on at least one of its output sockets PS, a single-phase alternating current output IAS, IAS2, IAS3 with an output power P1, P2, P3. The three output powers P1, P2, P3 can be equal or different from each other. In this example, it is assumed that each of the three stations 100 has two parallelization sockets PP.

The parallelization box 200 includes several input sockets 201 and at least one output socket 202. Each of the several input sockets 201 is designed to be electrically connected to an output socket PS of a station 100. The at least one output socket 202 is designed to electrically connect at least one consumer device CD1, CD2 to the parallelization box. The parallelization box 200 includes a distribution line 203 connecting the several input sockets 201 to the at least one output socket 201.

In order for their output power P1, P2, P3 to be summed, the single-phase alternating output currents IAS, IAS2, IAS3 must be synchronized in frequency and also in intensity.

To achieve this, each of the two PP parallelization sockets of one of the three stations 100, called the master station, is electrically connected to one of the two PP parallelization sockets of each of the other two stations 100, called the slave stations. Thus, the MU3 processing unit of inverter 3 of the master station, called the master inverter M3, is connected to the SU3 processing unit of inverter 3 of each slave station, called the slave inverter S3.

The MU3 processing unit of the M3 master inverter is configured to generate an ssync synchronization signal, exhibiting a waveform and frequency respectively identical to the waveform and frequency of the single-phase AC output IAS generated by the M3 master inverter.

After being generated, the ssync synchronization signal is then transmitted by the MU3 processing unit to the SU3 processing unit of each of the S3 slave inverters.

Upon receiving the synchronization signal ssync, the SU3 processing units of the S3 slave inverters synchronize in frequency and intensity with said synchronization signal the waveforms of the single-phase alternating output currents IAS2, IAS3 that the S3 slave inverters must generate.

It follows that the single-phase alternating output currents IAS2, IAS3 generated by the slave inverters S3 and delivered on their respective input socket 201 of the parallelization box 200 are synchronized with the single-phase alternating output current IAS generated and delivered by the master inverter, and that the total single-phase output current IAST electrically supplying at least one consumer electrical device CD1, CD2 has a total output power PT equal to the sum of the output powers P1, P2, P3 of the single-phase alternating output currents IAS, IAS2, IAS3.

The connection of the MU3, SU3 processing units described above is given for illustrative purposes only and is not exhaustive.

In a particular embodiment, the parallelization box 200 has six input sockets 201, thus allowing up to six stations 100 to be put in parallel. Each of the six stations 100 then has a number of parallelization sockets PP adapted so that the processing units SU3 of the slave inverters S3 of five slave stations can receive the synchronization signal ssync from the processing unit MU3 of the master inverter M3 of the master station.

In one variant, it is possible to connect six 100 stations in parallel, designed according to the first electrical architecture presented. It is then possible to power at least one consumer electrical device, CD1, CD2, with a total single-phase output current (IAST) and a total output power (PT) of 66 kW. In another variant, it is possible to connect six 100 stations in parallel, designed according to the second electrical architecture presented. It is then possible to power at least one consumer electrical device, CD1, CD2, with a total single-phase output current (IAST) and a total output power (PT) of 43.2 kW.

In order to transmit a single-phase total output current IAST having such total output power values PT, at least one output socket 202 of the parallelization box 200 corresponds for example to a 90 A socket.

Besides providing a single-phase total output current IAST that can present a high total output power PT, the 300 rechargeable power supply set also has the advantages of being easily portable/transportable, and installable/dismantled in areas or locations with a limited surface area or volume since it is not designed as a single unit/block but formed by the association of several pieces of equipment (the 100 stations, the 200 parallelization box).

Claims (19)

Rechargeable mobile power supply station (100) for supplying power to at least one electrical consumer device (CD), the rechargeable mobile power supply station (100) comprising:
- at least one first input socket (P1) intended for connection with a first external source (S1) which delivers a single-phase alternating current (IA1, IA2),
- at least one AC-DC converter (1) having an input electrically connected to at least one first input socket (P1) and an output, and converting the single-phase alternating current (IA1, IA2) into a first external direct current (IC11, IC12),
- an inverter (3, M3, U3) with one input and one output,
- an internal rechargeable electrical source (4) comprising one or more rechargeable batteries (41),
- a distribution line having at least one first end electrically connected to the output of at least one AC-DC converter (1), a second end electrically connected to the internal rechargeable electrical source (4), and a third end electrically connected to the input of the inverter (2),
- one or more output sockets (PS) which are each electrically connected to the output of the inverter (3, M3, U3), and which are intended for electrical connection with at least one electrical consumer device (CD);
the rechargeable mobile power station (100) comprising a control unit (5) which is at least in communication with the rechargeable internal power source (4), and which is configured to switch the rechargeable mobile power station (100) between:
- a charging configuration, during which the internal rechargeable electrical source (4) is charged by a direct current charging current (ICT), which includes at least the first external direct current (IC11, IC12) delivered on the output of at least one AC-DC converter (1) and flowing from at least one first end to the second end of the distribution line, and
- a discharge configuration, during which the rechargeable internal electrical source (4) generates an internal direct current (ICC) which flows from the second end to the third end of the distribution line, and is then converted by the inverter (3, M3, U3) into a single-phase alternating output current (IAS) electrically supplying at least one electrical consumer device (CD). Rechargeable mobile power station (100) according to claim 1, wherein the distribution line includes a first switch (I1) which electrically connects at least one first end and the second end, and a second switch (I2) which electrically connects the second end to the third end, and the control unit (5) is in communication with the first switch (I1) and the second switch (I2) such that:
- in the load configuration, the control unit (5) drives the first switch (I1) to be in a closed position, and drives the second switch (I2) to be in an open position, and
- in the discharge configuration, the control unit (5) drives the first switch (I1) to be in an open position, and drives the second switch (I2) to be in a closed position. Rechargeable mobile power station (100) according to claim 1 or 2, comprising at least one second input socket (P2) provided for connection with a second external source (S2) which delivers a direct current (ICS2), and wherein the rechargeable mobile power station (100) comprises at least one DC-DC converter (2) having an input electrically connected to at least one second input socket (P2) and an output for converting the direct current (I2) into a second external direct current (IC2), said output of at least one DC-DC converter (2) being electrically connected to at least one other first end of the distribution line; such that when the rechargeable mobile power station (100) is in its charging configuration, the rechargeable internal power source (4) is charged by the charging direct current (ICT) which includes the second external direct current (IC2) delivered on the output of at least one DC-DC converter (2) and which flows from at least one other first end to the second end of the distribution line. Rechargeable mobile power station (100) according to any one of claims 1 to 3, wherein:
- at least one first input socket (P1) includes several first input sockets (P1),
- at least one AC-DC converter (1) comprises several AC-DC converters (1), and
- at least one first end of the distribution line includes several first ends;
such that each of the several AC-DC converters (1) is connected respectively at input to one of the first several input sockets (P1) and is connected respectively at output to one of the first several ends. Rechargeable mobile power station (100) according to any one of claims 1 to 3, wherein:
- at least one first input socket (P1) includes several first input sockets (P1),
- at least one AC-DC converter (1) comprises a single AC-DC converter (1),
- at least one first end of the distribution line includes a first end connected to the output of the single AC-DC converter (1), and
in which the rechargeable mobile power station (100) includes an electrical switch (6) having several inputs connected respectively to the first several input sockets (P1), and a single output electrically connected to the input of the single AC-DC converter (1); the electrical switch (6) allowing selection of which of its several inputs is connected to its output. Rechargeable mobile power station (100) according to any one of the preceding claims, wherein the internal rechargeable power source (4) comprises four rechargeable batteries (41) electrically connected together in a 2P2S configuration in which two subsets are connected in parallel, each comprising two rechargeable batteries (41) connected in series. Rechargeable mobile power station (100) according to any one of claims 1 to 5, wherein the internal rechargeable power source (4) comprises four rechargeable batteries (41) connected in series. A rechargeable mobile power station (100) according to any one of the preceding claims, wherein the or each of the rechargeable batteries (41) is associated with a temperature measuring device (42) for measuring a battery temperature, and with a heating system (43) connected to a thermal control system (7) which is configured to address the heating system (43) with a heating setpoint based on the battery temperature measured by the temperature measuring device (42) in order to maintain the battery temperature within a predefined temperature range. Rechargeable mobile power station (100) according to claim 8, wherein the heating system (43) of the or each of the rechargeable batteries (41) and the thermal regulation system (7) are electrically connected to at least one first input socket (P1) via an internal power line (LT) to allow power supply from the first external source (S1). Rechargeable mobile power station (100) according to any one of the preceding claims, comprising:
- a current measuring device (9) configured to measure and transmit to the control unit (5) the direct current charging current (ICT) during the charging configuration or the internal direct current (ICC) during the discharging configuration, and
- one or more voltage measuring devices (10) which are associated with the respective rechargeable battery or batteries (41) to measure and transmit to the control unit (5) a voltage at the terminals of the respective rechargeable battery or batteries (41);
the control unit (5) being configured to determine a charge level associated with the rechargeable battery or batteries as a function of: their corresponding voltage and DC charging current (ICT) during the charging configuration, or their corresponding voltage and internal DC current (ICC) during the discharging configuration. Rechargeable mobile power station (100) according to claim 10, wherein the control unit (5) is configured to, in the charging configuration, compare the charge level of the or each of the several rechargeable batteries (41) with a maximum charge level, and to stop the charging of the internal rechargeable power source (4) when the charge level of the or each of the several rechargeable batteries (41) becomes greater than or equal to the maximum charge level. A rechargeable mobile power supply station (100) according to claim 10 or 11, wherein the control unit (5) is configured to, in the discharge configuration, compare the charge level of the or each of the several rechargeable batteries (41) with a minimum charge threshold, and to stop the power supply to at least one consumer device (CD) by the internal rechargeable power source (4) when the charge level of the or each of the several rechargeable batteries (41) becomes below the minimum charge threshold. Rechargeable mobile power station (100) according to any one of claims 10 to 12, wherein the internal rechargeable power source (4) comprises several rechargeable batteries (41), and the control unit (5) is configured to, in the discharge configuration, control that the several rechargeable batteries (41) discharge simultaneously. Rechargeable mobile power station (100) according to any one of the preceding claims, comprising at least one third input socket (P3) intended for connection with a third external source and electrically connected to the output socket(s) (PS), so as to be able to power at least one consumer device (CD) directly from the third external source by bypassing the inverter (3, M3, U3). Rechargeable mobile power station (100) according to any one of the preceding claims, comprising a mobile chassis on which are arranged at least one first input socket (P1), at least one AC-DC converter (1), the inverter (3, M3, U3), the internal rechargeable power source (44), the distribution line, the output socket(s) (PS) and the control unit (5). Rechargeable mobile power station (100) according to any one of the preceding claims, wherein the inverter (3, M3, U3) has an inverter saturation power of between 7 and 11 kW, and for example equal to 7.2 kW or equal to 11 kW. Rechargeable mobile power station (100) according to any one of the preceding claims, comprising a geolocation device shaped to geolocate the rechargeable mobile power station (100), and a transmitter connected to the geolocation device and controlled by the control unit (5) to transmit geolocation data from the geolocation device to a remote server. Rechargeable mobile power supply station (100) according to any one of the preceding claims, comprising at least one parallelization socket (PP) connected to a processing unit (U3, MU3, SU3) of the inverter (3, M3, U3). Rechargeable power supply unit (300) for powering at least one electrically consuming device (CD1, CD2), the rechargeable power supply unit (300) comprising:
- several rechargeable mobile power supply stations (100) according to claim 18; and
- a parallelization box (200) comprising several input sockets (201) and at least one output socket (202) which is connected to the several input sockets (201);
in which:
- each of the several rechargeable mobile power stations (100) has at least one parallel connection (PP) which is connected to at least one parallel connection (PP) of at least one other rechargeable mobile power station (100), so that the processing units (U3, MU3, SU3) of the inverters (3, M3, U3) of the several rechargeable mobile power stations (100) are connected to each other,
- each of the several rechargeable mobile power supply stations (100) has at least one output socket (PS) which is connected to one of the several input sockets (201) of the parallelization box (200), so that the several rechargeable mobile power supply stations (100) are put in parallel;
such that the processing unit (MU3) of the inverter (M3) of one of the several rechargeable mobile power stations (100), which operates as the master inverter, generates and then transmits a synchronization signal (ssync) to the processing unit (SU3) of the inverter (S3) of the other or other rechargeable mobile power stations (100), which operates as the slave inverter, in order to:
- synchronize in frequency and intensity the single-phase alternating output currents (IAS, IAS2, IAS3) that the several rechargeable mobile power supply stations (100) deliver to their corresponding input sockets (201) of the parallelization box (200), which single-phase alternating output currents (IAS, IAS2, IAS3) each have a given output power (P1, P2, P3), then
- deliver on at least one output socket (202) of the parallelization box (200) a total single-phase alternating output current (IAST) having a total output power (PT) corresponding to the sum of the output powers of the single-phase alternating output currents (IAS, IAS2, IAS3) of the several rechargeable mobile power supply stations (100).