WO2017084924A1

WO2017084924A1 - Method and system for consigning an electric vehicle with respect to a dangerous electrical signal

Info

Publication number: WO2017084924A1
Application number: PCT/EP2016/077091
Authority: WO
Inventors: Damien BERNARD; Luc Nedelec; Freddy SUAUD
Original assignee: Bluebus
Priority date: 2015-11-16
Filing date: 2016-11-09
Publication date: 2017-05-26
Also published as: FR3043610A1; BR112018009746A2; FR3043610B1; TW201726447A; BR112018009746A8; EP3377362A1

Abstract

The invention relates to a system (110) for consigning an electric vehicle with respect to a dangerous signal delivered by at least two individual electrical energy sources (102,104) of said vehicle, disposed in parallel and powering electrical members (106) of said vehicle, said system (110) comprises at least one central box (116) producing a power supply gateway between said sources (102, 104) and said members (106), said central box (116) comprising at least one electrical connector (118-124) arranged separable so that, when it is separated from said central box (116) said connector (118-124) electrically disconnects at least one source (102, 104) or at least one member (106) from said central box (116). It also relates to an electrical circuit comprising such a system, an electric vehicle comprising such a system or such an electrical circuit, as well as a method of consigning said vehicle.

Description

"Method and system for recording an electric vehicle with respect to a dangerous electrical signal"

The present invention relates to a method and a system for recording an electric vehicle with respect to a dangerous electrical signal, in particular of a terrestrial public transport vehicle of the electric bus type. It also relates to an electric circuit for an electric vehicle and an electric vehicle comprising such a system and / or such an electric circuit.

The field of the invention is the field of devices for electrical consignment of an electric vehicle with respect to a dangerous electrical signal delivered by at least one electrical source of said vehicle, in particular of the bus or tram-bus type.

State of the art

To reduce pollution in built-up areas, the use of electric vehicles is booming, encouraged not only by users' awareness but also by administrative incentives to buy and use electric vehicles. Thus, the number of electric vehicles is constantly increasing in all areas: private-use vehicles, rental-type shared-use vehicles, bus-type public transport vehicles, and so on.

These vehicles are powered by one or more electrical sources delivering a dangerous electrical signal. When an operator wishes to intervene on an electrical component of the vehicle, it is necessary to record said vehicle with respect to the dangerous electrical signal supplying said member, to secure the operator and to avoid the risk of electrocution.

By "logging an object with respect to a dangerous electrical signal" is meant the removal of any voltage or current, across said object, respectively supplying said object.

There are already consignment systems, also called HVIL for "Hazardous Voltage Interlock Loop" in English, for vehicles electric car type. US Pat. No. 7,977,814 describes such a system for centrally registering a vehicle with respect to the dangerous voltage delivered by a single battery.

However, the state of the art recording systems, including that described in US Pat. No. 7,977,814, can not be used when the electric vehicle comprises several electrical sources arranged in parallel, or electrical sources supplying power in parallel. and / or in series the organs of the vehicle. The system described in document US Pat. No. 7,977,814 also makes it impossible to record the vehicle when certain electrical components of the vehicle are arranged in parallel.

An object of the present invention is to overcome these disadvantages.

Another object of the invention is to propose a method and a system for recording an electric vehicle with respect to a dangerous electrical signal that can be used in a vehicle comprising several independent electrical energy sources arranged in parallel, and that that is the electrical disposition of the electric organs of said vehicle.

Presentation of the invention

The invention makes it possible to achieve at least one of these aims by a system for consigning an electric vehicle, in particular a terrestrial public transport vehicle of the bus or tram-bus type, with respect to a dangerous signal delivered by at least two individual electrical energy sources of said vehicle, arranged in parallel and supplying electrical components of said vehicle, said system being characterized in that it comprises at least one central housing providing a feed bridge between said sources and said members, said central housing comprising at least one electrical connector, arranged separably so that, when separated from said central housing, said connector electrically disconnects at least one, in particular each, source or at least one member of said housing central. Thus, the system of recording of the vehicle with respect to the dangerous signal makes it possible to disconnect at least one, in particular each, from the electric sources arranged, and / or at least one, in particular each of the members arranged, in parallel at the level of the central box. regardless of the electrical arrangement of the electrical components of the vehicle or their physical layout inside the vehicle. In addition, the consignment is performed at a centralized location of the vehicle, which is simpler and more ergonomic for the operator.

In the present application, the term "dangerous signal" designates a dangerous, continuous voltage greater than or equal to 60V, or a dangerous current, continuous, greater than or equal to 20mA.

In the present application, a "tram-bus" designates a terrestrial public transport vehicle mounted on wheels and which recharges at each station, so as not to require heavy rail-type, catenary-type infrastructure on the road. Such an electric vehicle is recharged at each station by means of load elements of the station and a connector connecting said vehicle to said station.

Preferably, the system according to the invention may further comprise means for locking at least one connector at a location, or in a locking position, when it is separated from said central housing.

Such a locking means can be arranged to realize a locking of the separate connector in a predefined locking location and reported within the vehicle.

According to an exemplary embodiment, the connector may be locked by locking on a frame or a frame of the vehicle, or on a frame or a frame of the central housing.

The condemning means may include a padlock, or the like.

The locking means may be individual for each connector or common to several connectors.

The locking means may be disposed on the connector, or at the locking location. In a particularly advantageous version, the system according to the invention may further comprise a means for verifying the presence or absence of an electrical signal, in particular of an electrical voltage, downstream of at least one connector, in particular at the terminals of at least one member supplied via said connector, after separation of said connector from said central housing.

Such verification means may comprise a voltmeter measuring the voltage downstream of the connector. According to an exemplary embodiment, such a verification means may be a VAT for "verification of lack of voltage" known from the state of the art.

Such verification means may advantageously be independent of the central housing and the connectors.

Such a verification means can also give a value of the voltage present or absent, for example in volts.

According to one embodiment, the system according to the invention may comprise a housing, said intermediate, providing a bridge between at least one member and said verification means.

Such an intermediate housing may be in the form of a housing having interfaces, and in particular electrical terminals, for connecting:

on the one hand, the connector or connectors separated from the central housing, and

- On the other hand, a voltage-free verification means, so that said voltage-free verification means can determine the presence or absence of voltage across said connectors.

According to a first exemplary embodiment, such an intermediate housing, which may also be called a tool housing in the present application, may have, for the presence or absence of voltage verification means:

a terminal of greater potential, that is to say a terminal "+", and - a terminal of smaller potential, that is to say a terminal "-"; common to several terminals for the connectors. In this case, the means for verifying the presence or absence of voltage will indicate the presence or absence of voltage for all the connectors connected to said intermediate box, and not individually for each connector.

According to a second exemplary embodiment, the intermediate housing may have, for the means of checking the presence or absence of voltage:

a "+" terminal, respectively a "-" terminal, common to several terminals for the connectors, and

- a terminal "-", respectively a terminal "+", individual for each organ connector. Of course, whatever the embodiment, the intermediate housing comprises, in addition to the electrical terminals for the voltage tester, electrical terminals, in particular two electrical terminals, for each connector.

In addition, regardless of the embodiment, the intermediate housing can be designed to have enough electrical terminals to connect multiple connectors at the same time.

According to the invention, at least one connector may be common to several sources, respectively several members, so that, when separated from said central housing, said connector electrically disconnects all of said sources, respectively said members.

Such a characteristic makes it possible to record several electrical components, or even all the electrical components, of the vehicle with respect to the dangerous signal, in one go.

According to one embodiment, the system according to the invention may comprise, for at least one source, an individual connector, intended to be separably disposed of said source, so that, when it is separated from said source, said connector electrically disconnects said source from said central housing.

This characteristic offers the possibility of recording said central box with respect to the dangerous signal supplied by this or that source individually, which offers more flexibility during the recording.

The central housing can include:

- At least one electrical connector, said downstream, disposed on the side of the electrical organs to be powered, so that it electrically disconnects at least one member of said central housing, when separated from said central housing; and or

- At least one electrical connector, said upstream, disposed on the side of the electric sources, so that it electrically disconnects at least one source of said central housing, when separated from said central housing.

Thus, it is possible to make a record with respect to the dangerous signal, upstream and / or downstream of the central housing.

At least one, in particular each, upstream connector, downstream respectively, may comprise:

at least one, in particular two, monopolar connector (s); and or

at least one bipolar connector.

Furthermore, in some cases, the electric vehicle may comprise at least two groups of electrical sources arranged in parallel with each other, each group comprising several electrical sources, which may be arranged in series or in parallel with each other. compared to others.

In this case, the system according to the invention may further comprise for each group a management box, disposed between the sources of said group and said central housing.

Each management unit of a group of sources then realizes an electrical gateway between the electrical sources of this group and said central housing. In the case where the system comprises such a management box, at least one upstream connector of the central housing can be arranged to electrically disconnect said management box of said central housing.

In this case, the system according to the invention makes it possible, in one go, a logging with respect to the dangerous signal delivered by all the electrical sources associated with this management box.

In the case where the system comprises at least one management unit as described above, and that the central housing comprises at least one upstream connector, the at least one upstream connector may comprise at least one, in particular two, connector (s) monopolar (s). In this case, each monopolar connector disconnects one of the poles, pole "+" or pole "-", of the electrical signal delivered by the sources associated with this management box.

When the central housing further comprises downstream connectors, at least one downstream connector may comprise at least one bipolar connector.

Of course, the nature and shape of at least one electrical connector, downstream or upstream, may be a function of the element concerned, namely an electrical member of the vehicle to be powered, an electrical source, a management box, etc.

According to a preferred embodiment, but in no way limiting:

each electrical source is connected to a management box thanks to a separable bipolar connector located at said source;

each management box is connected to the central box by means of two monopolar upstream connectors located on the central box and individually separable from said central box; and

- Each member is connected to the central housing through a bipolar downstream connector located on the central housing, and separable from said central housing. According to another aspect of the same invention, there is provided an electric vehicle electrical circuit, said electric circuit comprising:

- at least two electric organs,

at least two electrical energy sources arranged in parallel delivering a dangerous power supply signal for said electrical components, and

a recording system according to the invention.

At least one electrical source may include at least one battery, and / or at least one supercapacity, etc.

According to yet another aspect of the same invention, there is provided an electric vehicle comprising:

an electrical circuit according to the invention, or

a recording system according to the invention.

Such an electric circuit can be arranged in an upper wall of the vehicle and / or at the rear of the vehicle.

In addition, one or more electrical sources may be disposed in an upper wall of the vehicle. Alternatively or additionally, one or more electrical sources may be disposed at a rear wall of the vehicle.

Such an electric vehicle can be an electric public transport vehicle, of the bus or tram-bus type, in particular on the road.

According to yet another aspect of the same invention, there is provided a method of recording an electric vehicle with respect to a dangerous electrical signal delivered by at least two individual electrical energy sources of said vehicle, arranged in parallel and feeding members of said vehicle, said vehicle further comprising at least one central housing providing a feed bridge between said sources and said members, said method comprising the steps of:

separating, from said central housing, at least one connector connecting said central housing to a source or to an organ;

- Locking said connector by locking said separate connector in a location, or a position, said locking, in particular to prevent inadvertent reconnection of said connector.

More generally, the method according to the invention may comprise, in terms of a step or of a functional characteristic, each of the material characteristics described above with reference to the system, to the electrical circuit or to the vehicle according to the invention.

More particularly, the method according to the invention may advantageously comprise a verification step, by a verification means, of the presence or absence of an electrical signal, in particular of an electrical voltage, downstream from at least one connector. previously separated, in particular at the terminals of at least one member supplied via said previously separated connector.

Such a verification can be carried out directly or via an intermediate tool housing, in particular independent of the central housing, as described above.

The method according to the invention may further comprise:

a preliminary step of stopping the supply system, and / or

a prior step of disconnecting an electric charging plug from at least one source, possibly combined with a step of locking said plug, when the vehicle comprises such a charging plug. By "system shutdown" is meant a nomal sleep of energy sources and the deenergization of the vehicle. Such a "system shutdown" differs from a "vehicle stop" in that the vehicle stop is not synonymous with complete deenergization since some consumers of dangerous voltage, type of on-board converter, can still be powered by batteries.

The locking step of the charging socket can be achieved by locking said socket in a locking location, for example located on an access door to said charging socket.

Description of the Figures and Embodiments

Other advantages and characteristics will appear on examining the detailed description of non-limiting embodiments, and the appended drawings in which:

FIGURES 1 and 2 are diagrammatic representations of two nonlimiting examples of a circuit according to the invention;

FIGURES 3 and 4 are diagrammatic representations of two nonlimiting examples of a tool housing that can be implemented in the present invention;

FIGURES 5 is a schematic representation of a nonlimiting example of a method according to the invention; and

- FIGURE 6 is a representation of an embodiment of an electric bus type electric vehicle incorporating a circuit according to the invention.

It is understood that the embodiments which will be described in the following are in no way limiting. It will be possible to imagine variants of the invention comprising only a selection of characteristics described below, isolated from the other characteristics described, if this selection of characteristics is sufficient to confer a technical advantage or to differentiate the invention from of the prior art. This selection includes at least one feature preferably functional without structural details, or with only a part of the structural details if this part is only sufficient to confer a technical advantage or to differentiate the invention from the state of the prior art.

In the figures, the elements common to several figures retain the same reference.

In addition, in the following, the examples described relate to the consignment of a vehicle with respect to a dangerous voltage. Of course, the examples described can be used for the consignment of a vehicle with respect to a dangerous current.

FIG. 1 is a schematic representation of a non-limiting exemplary embodiment of an electric vehicle electric circuit according to the invention.

The electrical circuit 100 shown in FIG. 1 corresponds for example to an electric circuit of an electric bus.

The electrical circuit 100 comprises a first group 102 comprising four batteries 102i-102 ₄ arranged in parallel with each other. The electrical circuit 100 comprises a second group 104 also comprising four batteries 104i-104 ₄ also arranged in parallel with each other. The first group 102 is arranged in parallel with the second group 104.

The batteries 102 and 104 are used to power electrical members 106 ₁ and 106 ₂ of the electric vehicle. These electrical devices can include all types of organs in an electric bus, such as, for example, the electric motor of the bus, inverters, converters, compressors, a boiler, etc. In the example shown, the reference 106i corresponds to the electric motor, as well as to the variators associated with the electric motor, and the reference 106 ₂ corresponds to the other elements of converter, compressor, boiler, etc. type.

An electrical outlet 108 recharges each of the batteries 102 and 104 from an external power source such as the power grid. The electrical circuit 100 comprises a system 110 for recording the electric bus with respect to the dangerous voltage delivered by the batteries 102 and 104.

The electrical system 110 comprises for each group of batteries 102 and 104, a management box, respectively 112 and 114, to which the batteries of each group 102 and 104 are connected in parallel.

Each management box 112 and 114 is connected to a central housing 116 providing a bridge between the management boxes 112 and 114, and therefore the electric batteries 102 and 104, and the electrical components 106 to be powered.

The central housing 116 is connected with the electrical members 106 of the vehicle with two connectors, or two groups of at least two connectors, bipolar 118 and 120. Each bipolar connector, or group of bipolar connectors, 118 and 120 is separable from the central housing 116, so that there is no longer physical contact between the central housing 116 and each bipolar connector 118 and 120. Each bipolar connector, or group of bipolar connectors, 118 and 120, can connect and disconnect several electrical organs once. The connectors, or group of connectors, 118 and 120 are located downstream of the central housing 116 relative to the batteries 102 and 104.

One of the important characteristics of these connectors, or groups of connectors, 118 and 120 is that they are IPXXB, that is to say, voltage not accessible to the fingers of the user even disconnected. The separation of these connectors is also monitored electronically through a HVIL (High Voltage Interlock Loop). This diagnosis opens the circuit via a contactor to avoid any risk of arcage if a current was flowing in the circuit. The detection of this action also makes it possible to send a request to the batteries via a communication bus, to open their own contactors, in order to put a complete power off of the bus.

The central housing 116 is connected with the management box 112 associated with the battery group 102 via two monopolar connectors 122 ₁ and 122 ₂ , IPXXB and diagnosed through an HVIL. Each monopolar connector 122 is individually separable or removable from the central housing 116, so that there is no longer any physical contact between the central housing 116 and each monopolar connector 122. Thus, each monopolar connector 122 allows to connect and disconnect a pole, namely the "+" pole or the "-" pole, for the grouping of the four sources 102i-102 ₄ at one time. The connectors 122 are upstream of the central housing 116 relative to the batteries 102.

Similarly, the central housing 116 is connected with the management box 114 associated with the battery group 104 via two monopolar connectors 124 ₁ and 124 ₂ . Each monopolar connector 124 is individually separable or removable from the central housing 116, so that there is no more physical contact between the central housing 116 and each monopolar connector 124. Thus, each monopolar connector 124 makes it possible to connect and disconnect one pole, namely the "+" pole or the "-" pole, for the grouping of the four sources 104i-104 ₄ at one time. The connectors 124 are upstream of the central housing 116 relative to the batteries 104.

Furthermore, each of the batteries 102i-102 ₄ is connected to the management box 112 via a bipolar connector 126i-126 ₄ , IPXXB and diagnosed through an HVIL, located on the battery 102i-102 ₄ and separable from said battery 102i-102 ₄ , so that there is no longer any physical contact between said battery 102i-102 ₄ and said bipolar connector 126i-126 ₄ .

Similarly, each of the batteries 104i-104 ₄ is connected to the management box 114 via a bipolar connector 128- 128 ₄ on the battery 104i-104 ₄ and separable from said battery 104i-104 ₄ , so there is no longer contact between said Physics ue 104i-104 ₄ battery and led it bipolar connector 128i-128 _4.

Each of the connectors 118-126 is equipped with a locking means (not shown), such as a padlock, which is connected to a lock location on a frame or frame of the electric vehicle. The system 110 further comprises an apparatus, such as a voltmeter or a "voltage check tester" 130, for checking for the presence or absence of a voltage in a connector or disconnected member of the batteries. 102 and 104, and possibly give a measurement of said voltage. Such a device may not be embedded in the vehicle, and in particular be an independent mobile tool used by maintenance operators.

To do this, the system 110 includes a tool housing 132 to which each of the separate connectors 118-126 of the central housing 116 or the batteries 102 and 104 can be connected. The tool housing 132 also includes an interface on which the voltage tester 130 can be connected to detect the presence or absence of voltage across the connectors 118-126 also connected to said tool housing 132. Preferably, the tool housing 132 and the absence of voltage tester 130 are independent of the other elements of the system 110 and in particular the central housing 116 and management boxes 112 and 114.

In the example shown in FIG. 1, the charging socket 108 is connected to each battery 102, respectively 104, through the management box 112, respectively 114. Of course, the charging plug 108 can be connected to each of these management boxes 112 and 114 via a bipolar connector, or two monopolar connectors which are IPXXB and HVIL, such as those described above, arranged at each management box 112 and 114, and which can be disconnected and physically separated from said management box 112 and 114.

The example shown in FIG. 1 makes it possible to record an electric vehicle with respect to the dangerous voltage supplied by the batteries 102 and 104:

in a first level located downstream of the central housing, with the connectors 118 and 120, in a second level located upstream of the central housing, with the connectors 122 and 124, and

in a third level located at each of the batteries 102 and 104, with the connectors 126 and 128.

FIG. 2 is a schematic representation of another non-limiting exemplary embodiment of an electric vehicle electric circuit according to the invention.

The circuit 200 shown in FIG. 2 includes all elements of circuit 100 of FIGURE 1.

Unlike circuit 100 of FIGURE 1, circuit 200 includes a logging system 210 which differs somewhat from system 110 of FIGURE 1.

The system 210 includes all the elements of the system 110 of the

FIGURE 1 except that the central housing 116 has no separable downstream connector connecting said central housing 116 to the electrical members 106. In addition, the central housing 116 is connected to each of the management boxes 112 and 114 via a bipolar upstream connector, respectively 202 and 204, arranged on said central housing 116 and separable from said central housing 116.

The other elements remain unchanged with respect to the system 110 of FIGURE 1.

The example shown in FIG. 2 makes it possible to record the electric vehicle with respect to the dangerous voltage supplied by the batteries 102 and 104:

in a first level located upstream of the central housing, with the connectors 202 and 204, and

in a second level located at each of the batteries 102 and 104, with the connectors 126 and 128.

Contrary to the example of FIGURE 1, it is not possible with the example of FIGURE 2 to record the electric vehicle with respect to the dangerous voltage at a level located downstream of the central housing 116. In the examples shown, the batteries 102-104 are connected to the central housing 116 via management boxes. Alternatively, the batteries can be connected directly to the central box without the use of a management box.

In addition, the central housing may include a single separable connector for disconnecting all batteries and / or a single separable connector for disconnecting all the electrical components of the vehicle.

FIGURE 3 is a schematic representation of a first example of a tool housing that can be implemented in the system according to the invention.

The tool housing 300 shown in FIGURE 3 includes a plurality of electrical interfaces 302 for connecting each of the connectors 118-128, 202-204.

The tool housing 300 of FIGURE 3 also includes an electrical interface "+" 304 and an electrical interface "-" 306, dedicated to the connection to said tool housing 300 of a presence or absence of voltage tester.

The tool housing 300 thus makes it possible to detect the presence or the absence of a voltage across the set of connectors connected to the interfaces 302 of the tool housing 300, without being able to individually test said connectors.

FIGURE 4 is a schematic representation of a second example of a tool housing that can be implemented in the system according to the invention.

The tool housing 400 shown in FIGURE 4 includes all the elements of the tool housing 300 of FIGURE 3.

Unlike the tool housing 300 of FIGURE 3, the tool box 400 in FIGURE 4 includes an electrical interface "+" 304i-304 ₅ individual for each of the electrical interfaces 302 and the single electrical interface "-" 306.

The tool housing 400 makes it possible to test and detect the presence or absence of a voltage across each of the connectors connected to the interfaces 302 of the tool housing 400, individually.

FIGURE 5 is a schematic representation of an example of a method of recording an electric vehicle with respect to the dangerous voltage in an electric vehicle according to the invention.

The method 500 comprises a step 502 of disconnecting a charging socket of the electric vehicle, if the electric vehicle has one.

The withdrawn charging socket can then be blocked by locking in a locking location during a step 504. The locking can be achieved by locking the charging socket to the locking location, for example on a door access to said charging socket.

The method 500 may then comprise a step 506 of shutting down the system, for example by switching a storage switch. Such a stop is made via a switch giving information to the electronics. All 102-104 batteries are indented by opening their own contactors: the deenergization of the vehicle is complete, unless we reconnect the load socket which is a priority, but whose conviction was made at step 504 .

During a step 508, at least one, in particular each, connector is physically separated from the central housing, so that there is no longer any physical contact between the connector and the central housing. Such a connector can be:

an upstream connector connecting said central box to at least one battery or a management box, or

- A downstream connector connecting said central housing to at least one electrical member of the vehicle. Then, in a step 510, the or each separate connector is locked by locking at a lock location. The locking of a connector can be achieved by locking the connector to the locking location, for example on a frame or frame of the vehicle.

A step 512 of the method then performs a verification step, by a verification means, for example by a VAT, the presence or absence of an electrical voltage on each separate downstream connector or on the central housing at the separate upstream connector. .

FIGURE 6 is a schematic representation of an electric bus type electric vehicle incorporating a circuit according to the invention.

The vehicle 600 shown in FIGURE 6 is an electric bus. The group 102 of the four batteries 102i-102 ₄ is disposed in a housing arranged in the upper wall, or the roof, of the bus 600.

The group 104 of the four batteries 104i-104 ₄ is arranged in a housing arranged on the side of the rear wall of the bus 600.

In this variant, the VAT 130 can be embedded in the bus 600, for example on the side of the rear wall and at the periphery of the battery group 104i-104 ₄ .

Of course, the invention is not limited to the examples detailed above.

In particular, the number of storage modules corresponds to the maximum of energy storage modules depending in particular on the weight of the vehicle and the autonomy considered sufficient for the operation of the vehicle.

In addition, the invention is not limited to buses and can for example be applied to tram-buses and other public transport vehicles, in particular terrestrial, and even more particularly on the road.

Claims

A system (110; 210) for recording an electric vehicle (600) with respect to a dangerous signal from at least two individual electrical power sources (102, 104) of said vehicle (600) arranged in parallel and power supplying electrical members (106) of said vehicle (600), said system (110; 210) including at least one central housing (116) providing a feed bridge between said sources (102, 104) and said members (106), said central housing (116) comprising at least one electrical connector (118-124; 202, 204), arranged separable so that, when separated from said central housing (116), said connector (118-124; 202, 204) ) electrically disconnects at least one, in particular each, source (102, 104) or at least one member (106) from said central housing (116); characterized in that it comprises means for locking at least one connector (118-124; 202, 204) in a locking location when separated from said central housing (116).

2. System (110; 210) according to the preceding claim, characterized in that it comprises means (130) for checking the presence or absence of an electrical signal, in particular of an electrical voltage, downstream of at least one connector (118-124; 202, 204), in particular across at least one member (106) fed through said connector (118-124; 202, 204), after separation from said connector (118-124); 202, 204) of said central housing (116).

3. System (110; 210) according to the preceding claim, characterized in that it comprises a housing (132), said intermediate, providing a bridge between at least one member (106) and said verification means (130).

4. System (110; 210) according to the preceding claim, characterized in that at least one connector (118-124; 202, 204) is common to several sources (102, 104), respectively several members (106), so that, when separated from said central housing (116), said connector (118-124; 202, 204) electrically disconnects all of said sources (102, 104) respectively from said members (106).

5. System (110; 210) according to any one of the preceding claims, characterized in that it comprises, for at least one source (102, 104), an individual connector (126, 128), provided to be separably arranged said source (102, 104) so that, when separated from said source (102, 104), said connector (126, 128) electrically disconnects said source (102, 104) from said central housing (116).

The system (110; 210) according to any one of the preceding claims, characterized in that said central housing (116) comprises:

- At least one electrical connector (118, 120), said downstream, disposed on the side of the electrical members (106) to be powered, so that it electrically disconnects at least one member (106) of said central housing (116), when it is separate from said central housing (116); and or

at least one electrical connector (122, 124, 202, 204), said upstream, disposed on the electrical source side (102, 104), so that it electrically disconnects at least one source (102, 104) of said central housing (116), when separated from said central housing (116).

7. System (110; 210) according to any one of the preceding claims, characterized in that, when the vehicle (600) comprises at least two groups (102, 104) of electrical sources arranged in parallel each comprising several electrical sources ( 102, 104), said system (110; 210) further comprises for each group a housing (112, 114), said management, disposed between the sources (102, 104) of said group (102, 104) and said central housing (116).

8. System (110; 210) according to claims 6 and 7, characterized in that at least one upstream connector (122, 124; 202, 204) is arranged to electrically disconnect said management housing (112, 114) of said housing. central (116).

9. System (110) according to any one of claims 6 or 8, characterized in that:

at least one upstream connector comprises at least one, in particular two, monopolar connector (s) (122, 124); and or

at least one downstream connector comprises at least one bipolar connector (118, 120).

Electric circuit (100; 200) of an electric vehicle, said electrical circuit (100; 200) comprising:

at least two electrical members (106),

at least two electrical energy sources (102, 104) arranged in parallel delivering a dangerous power supply signal for said electrical components (106), and

a logging system (110; 210) according to any one of the preceding claims.

Electric vehicle (600) comprising:

an electrical circuit (100; 200) according to the preceding claim, or

a logging system (110; 210) according to any one of claims 1 to 9.

12. Vehicle (600) according to the preceding claim, characterized in that the electric circuit is arranged in an upper wall of the vehicle (600) and / or at the rear of the vehicle (600).

13. Vehicle (600) according to any one of claims 11 or 12, characterized in that it is a public transport vehicle of the bus or tram-bus type.

14. A method (500) for recording an electric vehicle (600) with respect to a dangerous electrical signal delivered by at least two individual electrical energy sources (102, 104) of said vehicle (600), arranged in parallel and feeding members (106) of said vehicle (600), said vehicle (600) further comprising at least one central housing (116) providing a feed bridge between said sources (102, 104) and said members (106), said method (500) comprising the steps of:

- separating (508), from said central housing (116), at least one connector (118-124; 202, 204) connecting said central housing (116) to a source (102, 104) or member (106) ;

- locking said connector by locking (510) said separate connector (118-124; 202, 204) in a location, or a position, said locking, in particular to prevent inadvertent reconnection of said connector (118-124;

202, 204).

15. Method (500) according to the preceding claim, characterized in that it further comprises a step (512) of verification, by means of verification (130), the presence or absence of an electrical signal, in particular an electrical voltage downstream from at least one previously separated connector (118-124; 202; 204), in particular across at least one member (106) supplied via said previously separated connector (118); -124; 202, 204).

16. Method (500) according to any one of claims 14 or 15, characterized in that it further comprises:

a preliminary step (506) for stopping the supply system, and / or

a preliminary step (502) of disconnecting an electrical charging plug from at least one source, possibly combined with a step (504) for locking said plug, when the vehicle (600) comprises such a charging plug.