CN115243926A

CN115243926A - Vehicle for managing the recharging of a battery according to the state of sensors of a direct current recharging socket

Info

Publication number: CN115243926A
Application number: CN202180020304.2A
Authority: CN
Inventors: O·巴伦吉恩; A·德克鲁特; C·普雷韦拉托
Original assignee: PSA Automobiles SA
Current assignee: PSA Automobiles SA
Priority date: 2020-03-12
Filing date: 2021-02-04
Publication date: 2022-10-25
Also published as: FR3108069B1; EP4117954A1; WO2021181017A1; FR3108069A1

Abstract

The invention relates to a vehicle (V) comprising: -a rechargeable Battery (BR), -a base (ER) on which is fixedly integrated: a first socket (P1) suitable for recharging the Battery (BR) with direct current and comprising two first pins, each of which is provided with a first sensor for measuring temperature; and a second socket (P2) suitable for recharging the Battery (BR) with alternating current and comprising two second pins, each of which is provided with a second sensor for measuring temperature; -a Processor (PR) and a Memory (MD) configured for triggering an interruption of the recharging when the first sensor fails during the recharging using the first socket (P1).

Description

Vehicle for managing the recharging of a battery according to the state of sensors of a direct current recharging socket

Technical Field

The present invention claims priority from french application N ° 2002436 filed 3, month 12, 2020, the contents of which (text, drawings and claims) are incorporated herein by reference.

The present invention relates to a vehicle having at least one rechargeable battery that can be recharged with direct current and with alternating current, and more precisely to the regulation of the recharging of such a battery.

Background

Some vehicles include at least one battery that can be recharged (according to the user's choice) both with direct current and with alternating current, thanks to a first socket and a second socket that are fixedly integral with a base included in the front or rear portion of the vehicle. More precisely, the first socket of the base is suitable for recharging with direct current and generally comprises two first pins, and the second socket of the base is suitable for recharging with alternating current and generally comprises at least two second pins (most commonly seven pins).

When it is desired to effect recharging of the battery of the vehicle with direct current (or respectively with alternating current), an external socket (for example of a recharging station) is connected with the first socket (or respectively the second socket) of the vehicle.

The continuous connection and disconnection of the external pins on the pins of the base on which the currents of the first and second sockets pass cause wear of these pins and therefore cause the contact of these pins with the external pins to become increasingly incomplete (francs). Therefore, when there is a gap between the metal contacts/metal, small arcs sometimes occur, which can lead to a rise in the temperature of the base, which is potentially dangerous for the vehicle, the base's socket, and the user performing the disconnection from the external socket. It is therefore very important to monitor the temperature of the base during each recharging, in particular when recharging with direct current, because of the high intensity of said direct current.

To this end, it has been proposed to add a first temperature sensor to each of the two first pins through which the direct current of the first socket of the base passes and a second temperature sensor to each of the two second pins through which the alternating current of the second socket of the base passes, and to interrupt the recharging when at least one of the first and second sensors detects a temperature greater than a threshold value (typically equal to 90 ℃). Typically, the interruption is accompanied by a display (e.g., a service light) on the screen of the vehicle to inform the user of the vehicle.

This mode of operation has several disadvantages. In fact, if the four first and second sensors fail simultaneously, it is not possible to have a temperature measurement and therefore not to interrupt the recharging in view of the base temperature, which may cause risks to the user (risk of burns) and/or to the vehicle and/or to the recharging terminals (risk of fire). In addition, sensors that detect temperatures greater than the threshold may (optionally temporarily) suffer from dysfunction. Thus, it may be erroneously decided to interrupt recharging due to the malfunction, which may be harmful to the user, since the battery of the vehicle retrieved by the user is not recharged, and therefore the vehicle cannot be used if its powertrain is fully electric.

The object of the invention is therefore, inter alia, to improve the situation.

Disclosure of Invention

To this end, the invention provides, among other things, a vehicle comprising at least one rechargeable battery and a base on which are fixedly integrated: in one aspect, a first socket adapted to recharge the battery with direct current and comprising two first pins, each of the two first pins being provided with a first sensor for measuring temperature; and, on the other hand, a second socket adapted to recharge the battery with alternating current and comprising two second pins, each of which is provided with a second sensor for measuring temperature.

The vehicle is characterized in that the vehicle further comprises at least one processor and at least one memory configured to perform operations in that, during recharging using the first receptacle:

-detecting a simultaneous failure of the first sensor by analyzing the signal of the first sensor,

-then, triggering an interruption of the recharging when said first sensor has simultaneously detected a failure.

Thereby, during recharging with direct current, any risk of abnormal heating of the base is avoided (considering the large currents that pass in the first socket), since it is considered that it is highly unlikely that both first sensors fail simultaneously without a malfunction at the location of this first socket.

The vehicle according to the invention may comprise other features that may be adopted individually or in combination, in particular:

-the processor and memory of the vehicle are configurable to perform operations consisting in: triggering an indication of an interruption of the recharging to a passenger of the vehicle;

-the processor and memory of the vehicle are configurable to perform operations consisting in: triggering an indication to a passenger of the conveyance in the event that at least one of the first sensor or the second sensor fails during a length of time greater than a time threshold;

-the processor and memory of the vehicle are configurable to perform operations consisting in: in the event of a failure of at least one of the first or second sensors, triggering storage in memory of a fault code associated with each sensor that failed;

-the processor and memory of the vehicle are configurable to perform operations consisting in: triggering storage of a fault code associated with each sensor that fails in the memory corresponding to a fault duration for each sensor that fails;

-the processor and memory of the vehicle are configurable to perform operations in that, during recharging using the second receptacle: triggering interruption of the recharging when the second sensor fails, and when the temperature measured by at least one first sensor is greater than a selected temperature threshold, or when the first sensor also fails;

-each of the first and second sensors may measure a temperature of the susceptor;

the vehicle may be of the mobile type.

The invention also provides a method for managing the recharging of a rechargeable battery of a vehicle, the vehicle further comprising a base on which there are fixedly integrated: in one aspect, a first socket adapted to recharge the battery with direct current and comprising two first pins, each of the two first pins being provided with a first sensor for measuring temperature; and, on the other hand, a second socket adapted to recharge the battery with alternating current and comprising two second pins, each of which is provided with a second sensor for measuring temperature.

The method is characterized in that the management and control method comprises the steps of:

in a first sub-step, it is detected whether two first sensors fail simultaneously by analyzing the signals of the two first sensors,

-then, in a second sub-step, when the first sensor has detected a fault, interrupting recharging using the first socket, regardless of the temperature measured by at least one second sensor.

The invention also provides a computer program product comprising a set of instructions capable, when executed by processing means, of implementing a management method of the type described above for managing the recharging of a rechargeable battery of a vehicle, the vehicle further comprising a base on which are fixedly integrated: in one aspect, a first socket adapted to recharge the battery with direct current and comprising two first pins, each of the two first pins being provided with a first sensor for measuring temperature; and on the other hand a second socket adapted to recharge the battery with alternating current and comprising two second pins, each of which is provided with a second sensor for measuring temperature.

Drawings

Other features and advantages of the present invention will become more apparent upon reading the following detailed description of the invention and the accompanying drawings in which:

figure 1 shows schematically and functionally an embodiment of a vehicle according to the invention,

figure 2 schematically and functionally shows an embodiment of a recharging base coupled with a power supply module comprising an embodiment of a management and control computer, an

Fig. 3 schematically shows an example of an algorithm for implementing the recharge management method according to the invention.

Detailed Description

The object of the invention is, in particular, to provide a vehicle V comprising at least one battery BR which can be recharged in a regulated manner with direct current or with alternating current, in order to avoid overheating of the recharging base ER of the vehicle.

In the following, as a non-limiting example, the vehicle V is considered to be of the mobile type. The vehicle is, for example, a motor vehicle, as shown in fig. 1. The invention is not limited to this type of vehicle. The present invention relates to virtually any type of vehicle comprising an all-electric or hybrid electric powertrain (or GMP) and comprising at least one rechargeable battery, which can be recharged with direct current or with alternating current, according to the choice of the user. Thus, the invention relates, for example, to land vehicles (utility vehicles, motor homes, minibuses, buses, trucks, motorcycles, road construction equipment, construction site equipment, agricultural equipment, leisure equipment (snowmobiles, cartoons), equipment with tracks and manned exploration equipment), boats and aircraft.

In addition, hereinafter, by way of non-limiting example, the GMP of the vehicle V is considered to be fully electric. The GMP of the vehicle V therefore comprises at least one electric drive machine which generates a torque for moving the vehicle, in particular on the basis of energy stored in the rechargeable battery. The GMP of the vehicle V may be hybrid and thus comprise at least one electrically driven machine and at least one non-electrically (optionally thermally) driven machine.

Fig. 1 schematically shows a vehicle V according to the invention, comprising a drive train (here with fully electric GMP), a (recharging) base ER comprising a first socket P1 and a second socket P2, and at least one processor PR and at least one memory MD.

As shown in a non-limiting manner in the figures, the GMP of the vehicle V here comprises an electric drive MM associated with a rechargeable battery BR and a coupling device DC. Furthermore, the drive train comprises, in particular, an engine shaft AM and a propeller shaft AT as a supplement to the own GMP.

The electric drive machine MM is responsible for generating torque on the basis of the energy stored in the battery BR under the command of a monitoring computer (not shown) of the GMP. The electric drive machine (MM) transmits the torque to an engine shaft AM, which is also coupled to a coupling device DC. The torque is generated here for a driven wheel axle (here the first axle T1) which is coupled to the coupling device DC via a propeller shaft AT. Thus, when the coupling device DC couples the engine shaft AM with the propeller shaft AT, the generated torque is transmitted here to the first axle T1.

In the example shown in non-limiting manner on fig. 1, the first axle T1 is located AT the front of the vehicle V and is preferably and as shown coupled to the propeller shaft AT via a differential (here a front differential) D1. In a variant, however, this first axle T1 may be an axle with reference T2 located at the rear of the vehicle V.

The coupling device DC may for example be a shaft speed reduction box. The coupling device may also be a claw coupling or a clutch.

The battery BR can be recharged (according to the user's choice) with direct current or with alternating current via a power supply module MA, which is connected to a (recharging) base ER. For example, the battery BR may be of the low-voltage type (typically 220V or 400V or 600V). But the battery may also be of medium or ultra low voltage type (typically 48V).

As shown in non-limiting manner in fig. 1, this battery BR also supplies the electrical equipment of the vehicle V, which is connected, for example, to the on-board network RB. For this purpose, the battery BR is coupled to the on-board network RB via a converter CV of the DC/DC type and optionally via an energy distribution module MDE.

The first socket P1 is fixedly integral with the base ER and is adapted to recharge the battery BR with direct current. As shown on fig. 2, the first socket comprises two first pins B1 on which direct current passes, each of said two first pins being provided with a first sensor C1 for locally measuring the temperature.

The second socket P2 is fixedly integral with the base ER and is adapted to recharge the battery BR with alternating current. As shown on fig. 2, this second socket comprises in particular two second pins B2 through which the alternating current passes, each of said two second pins being provided with a second sensor C2 for locally measuring the temperature. It is noted that in the example shown in non-limiting manner on fig. 2, the second socket P2 comprises seven pins, two second pins B2 of which constitute a CCS2 type socket (but to which the invention applies whatever type of socket).

Preferably, each of the first and second sensors C1 and C2 measures the temperature of the susceptor ER.

The power supply module MA ensures an interface between the battery BR and the base ER. This power supply module is responsible for regulating the power supply of the battery BR at each recharging phase during which an external socket (for example of a recharging station) is connected either to the first socket P1 or to the second socket P2.

The processor PR and the memory MD are configured to perform the operations in that, during recharging using the first socket P1: when both first sensors C1 fail, the interruption of the recharging is triggered regardless of the temperature measured by the at least one second sensor C2. The sensor is here considered to be faulty (in a faulty state) when the processor PR determines, after analyzing the sensor signal, for example:

no longer providing the signal, meaning that the temperature is no longer measured, or

The signal being outside a predetermined range of values, or

The evolution of the signal is abnormal, for example a too sudden evolution.

Thus, the recharging is automatically interrupted only if both first sensors C1 are in a fault state during recharging with direct current. Since it is highly unlikely that the two first sensors C1 will fail simultaneously without a functional obstruction at the position of the first socket P1, it is decided to avoid any risk of abnormal heating of the base ER, given the large current that passes in the first socket P1. Thus, there is no longer a risk of burning of the user or a risk of fire of the vehicle V.

The Processor PR may be, for example, a Digital Signal Processor (or DSP ("Digital Signal Processor")). The processor PR may comprise an integrated (or printed) circuit, or a plurality of integrated (or printed) circuits coupled by a wired or wireless connection. An integrated (or printed) circuit is understood to mean any type of device capable of performing at least one electrical or electronic operation. Thus, the processor may, for example, relate to a micropipe controller.

The memory MD is a random access memory in order to store instructions for implementing by the processor PR at least part of the governing method (and therefore the functions of the method) described more in detail below.

It is noted that in the example shown in non-limiting manner in fig. 1 and 2, the processor PR and the memory MD form part of a computer CA which itself forms part of the power supply module MA and is implemented in the form of a combination of electrical or electronic circuits or constituent elements (or "hardware") and software modules (or "software"). In an embodiment variant not shown, however, the processor PR and the memory MD may form part of a computer, optionally dedicated to manage recharging according to the state of the first sensor C1 and of the second sensor C2, and external to the power supply module MA, to which it is coupled to inform it of the determined recharging interruption.

It is also noted that if the processor PR detects only one failure of one of the two first sensors C1, it will continue to analyze the temperature measured by the (non-failed) other first sensor C1 and therefore decide to interrupt the recharging with direct current if this measured temperature is greater than the temperature threshold.

For example, the temperature threshold may be between 80 ℃ and 100 ℃. Thus, the temperature threshold may for example be chosen equal to 90 ℃.

It is further noted that the processor PR and the memory MD are preferably configured to perform operations consisting in: the triggering indicates to the passengers of the vehicle V the interruption of the recharging (with direct current or with alternating current).

It is understood that this indication occurs when the user decides to use the vehicle V again after recharging the battery BR.

This indication can be implemented, for example, by displaying a service indicator light (tmoin) or a dedicated warning text message on a screen of the vehicle V (for example, a screen of a dashboard or a screen of a central cluster) and/or by diffusing a dedicated sound (or audio) message via at least one speaker present in the vehicle V.

It is further noted that the processor PR and the memory MD are preferably configured to perform operations in which, in the event of a failure of at least one first sensor C1 or second sensor C2 during a period greater than a time threshold: an indication to a passenger of the vehicle V is triggered. It is considered herein that when a failure of the first sensor C1 or the second sensor C2 is persistent (too long), the user of the vehicle V needs to be indicated of the failure. For example, the indication may be implemented by displaying a service indicator light or a dedicated warning text message on a screen of the vehicle V (e.g., a screen of a dashboard or a screen of a central cluster) and/or by diffusing a dedicated sound (or audio) message via at least one speaker present in the vehicle V.

It is further noted that the processor PR and the memory MD are preferably configured to perform operations in which, in the event of a failure of at least one first sensor C1 or second sensor C2: triggering storage in memory of a fault code associated with each sensor that failed. Thus, upon entering the after-market service, it is known, possibly by accessing the contents of the memory, whether the first sensor C1 or the second sensor C2 is considered to be (temporarily or permanently) malfunctioning. This thus makes it possible to decide whether the faulty first sensor C1 or second sensor C2 or the entire base ER (which has the first socket P1 and the second socket P2) should be replaced.

The memory for storing said fault code may for example form part of the computer CA (or more generally the power supply module MA). But the memory may also be non-dedicated and thus used for storing much of the vital information of the vehicle V. In the latter case, this memory may for example form part of what is sometimes referred to as a smart service box (or BSI-monitoring device) by those skilled in the art. The transmission of the message containing the fault code to the memory is thus implemented via a communication network loaded in the vehicle V and optionally multiplexed.

When the latter option is present, the processor PR and the memory MD are optionally configured to perform operations consisting in: triggering storage of a fault code associated with each sensor that fails in the memory corresponding to a fault duration for each sensor that fails.

It is further noted that the processor PR and the memory MD may be configured to perform operations in which, during recharging using the second socket P2 (and therefore with alternating current): this recharging is triggered to be interrupted when the second sensor C2 fails, and when the temperature measured by the at least one first sensor C1 is greater than a temperature threshold (described more above) or when the first sensor C1 also fails.

In fact, the potential dysfunction at the location of the second socket P2 (which causes or does not cause simultaneous failure of the two second sensors C2) is considered to be less severe than that of the first socket P1, since the current intensity passing in the second socket P2 is relatively weaker. In addition to the detection of a failure of the two second sensors C2, it is therefore necessary to detect either an exceeding of the temperature threshold or a failure of the first sensor C1, so as to decide to interrupt the recharging with alternating current.

It is also noted that, as shown in a non-limiting way in fig. 2, the computer CA may also comprise, as a complement to its own random access memory MD and to the processor PR, a mass memory MM intended in particular to store the temperature measurements (from the first sensor C1 and the second sensor C2) and the intermediate data involved in all these calculations and processes. In addition, the computer CA may further comprise an input interface IE for receiving at least the temperature measurements for use in the calculation or processing, optionally after shaping and/or demodulation and/or amplification of said temperature measurements by means of a digital signal processor PR' in a manner known per se. Furthermore, the computer CA can also comprise an output interface IS, which serves, in particular, to send recharging interruption messages and indications of the computer (at least for the power supply module MA) and messages containing sensor fault indications or fault codes.

The invention can also be considered in the form of a regulation method for being implemented in the vehicle V described above, in order to be able to regulate the recharging of the battery BR of the vehicle.

The regulation method comprises steps 10-40, wherein, when the first sensor C1 (simultaneously) fails, the recharging using the first socket P1 is interrupted, regardless of the temperature measured by the at least one second sensor C2.

An example of an algorithm for implementing the recharging management method according to the invention is schematically shown on figure 3.

The algorithm comprises a sub-step 10 in which, in the event of starting (via the first socket P1) the recharging with direct current, the temperature measurements performed by the first sensor C1 and by the second sensor C2 are obtained and analyzed.

Then, if a simultaneous failure of both first sensors C1 is detected in the first substep 20, the ongoing recharging with direct current is interrupted in the second substep 30.

Then, in sub-step 40, the interruption of this recharging may be indicated to the passengers of the vehicle V and/or at least one fault code (optionally associated with a fault duration) may be stored in the memory.

It is further noted that one or more of the sub-steps of steps 10-40 of the governing method may be performed by different constituent elements. Thus, the management and control method can be implemented by a plurality of digital signal processors, random access memories, mass memories, input interfaces and output interfaces.

It is also noted that the present invention also provides a computer program product (or computer program) comprising a set of instructions capable, when executed by a processing means (for example a processor PR) of the electronic circuit (or hardware) type, of implementing the recharging management method described hereinabove for managing the recharging of the battery BR of the vehicle V.

Claims

1. A vehicle (V) comprising at least one rechargeable Battery (BR) and a base (ER) on which there are fixedly integrated: i) A first socket (P1) suitable for recharging the rechargeable Battery (BR) with direct current and comprising two first pins (B1), each of which is provided with a first sensor (C1) for measuring temperature; and ii) a second socket (P2) suitable for recharging the rechargeable Battery (BR) with alternating current and comprising two second pins (B2), each of which is provided with a second sensor (C2) for measuring temperature, characterized in that the vehicle further comprises at least one Processor (PR) and at least one Memory (MD) configured for performing the operations that, during recharging using the first socket (P1):

-detecting a simultaneous failure of the first sensor (C1) by analyzing its signal,

-then, triggering interruption of the recharging when the first sensor (C1) has simultaneously detected a fault.

2. The vehicle of claim 1, wherein the Processor (PR) and the Memory (MD) are configured to perform operations characterized by: triggering an indication of the interruption of the recharging to the passengers of the vehicle (V).

3. Vehicle according to claim 1 or 2, characterized in that said Processor (PR) and said Memory (MD) are configured for performing operations consisting in: triggering an indication to a passenger of the vehicle (V) when at least one first sensor (C1) or second sensor (C2) fails during a period of time greater than a time threshold.

4. A vehicle according to any of claims 1 to 3, wherein the Processor (PR) and the Memory (MD) are configured to perform operations consisting in: when at least one first sensor (C1) or second sensor (C2) fails, storage in memory of a fault code associated with each sensor that fails is triggered.

5. Vehicle according to claim 4, characterized in that said Processor (PR) and said Memory (MD) are configured for performing the operations consisting in: triggering storage of a fault code associated with each sensor that fails in the memory corresponding to a fault duration for each sensor that fails.

6. Vehicle according to any one of claims 1 to 5, characterized in that said Processor (PR) and said Memory (MD) are configured for carrying out operations in which, during recharging using said second socket (P2): triggering interruption of the recharging when the second sensor (C2) fails, and when the temperature measured by at least one first sensor (C1) is greater than a selected temperature threshold, or when the first sensor (C1) also fails.

7. Vehicle according to any one of claims 1 to 6, characterized in that each of said first sensor (C1) and said second sensor (C2) measures the temperature of said pedestal (ER).

8. Vehicle according to any one of claims 1 to 7, characterized in that the vehicle is of the motorized type.

9. A management method for managing the recharging of a rechargeable Battery (BR) of a vehicle (V), said vehicle further comprising a base (ER) on which are fixedly integrated: i) A first socket (P1) suitable for recharging the rechargeable Battery (BR) with direct current and comprising two first pins (B1), each of which is provided with a first sensor (C1) for measuring temperature; and ii) a second socket (P2) suitable for recharging said rechargeable Battery (BR) with alternating current and comprising two second pins (B2), each of which is provided with a second sensor (C2) for measuring temperature, characterized in that said regulation method comprises the steps (10-40) in which:

-in a first sub-step (20), detecting whether two first sensors (C1) fail simultaneously by analyzing their signals,

-then, in a second sub-step (30), interrupting the recharging using said first socket (P1) when said first sensor (C1) has detected a fault.

10. A computer program product comprising a set of instructions capable, when executed by processing means, of implementing a management method according to claim 9, for managing the recharging of a rechargeable Battery (BR) of a vehicle (V), said vehicle further comprising a base (ER) on which are fixedly integrated: i) A first socket (P1) suitable for recharging the rechargeable Battery (BR) with direct current and comprising two first pins (B1), each of which is provided with a first sensor (C1) for measuring temperature; and ii) a second socket (P2) suitable for recharging the rechargeable Battery (BR) with an alternating current and comprising two second pins (B2), each of which is provided with a second sensor (C2) for measuring temperature.