CN112078391A

CN112078391A - High-voltage safety control method and device for electric vehicle and vehicle

Info

Publication number: CN112078391A
Application number: CN202010621460.1A
Authority: CN
Inventors: 凌和平; 闫磊; 黄伟; 谭易; 张俊伟
Original assignee: BYD Co Ltd
Current assignee: BYD Co Ltd
Priority date: 2020-06-30
Filing date: 2020-06-30
Publication date: 2020-12-15
Anticipated expiration: 2040-06-30
Also published as: CN112078391B

Abstract

The present disclosure relates to a high-voltage safety control method for an electric vehicle, which comprises the following steps: acquiring first information representing the vehicle speed and second information representing the state of a charging port cover; determining whether the vehicle speed is greater than a threshold value according to the first information, and determining that the state of the charging port cover is an open state or a closed state according to the second information; and when the vehicle speed is not greater than the threshold value and the charging port cover is in an open state, controlling the electric vehicle to be in a non-high-voltage state. When the vehicle speed is not greater than the threshold value and the charging port cover is in the open state, the electric vehicle is controlled to be in the non-high-voltage state, namely when the finger touch safety is possibly caused, the electric vehicle is controlled to be in the non-high-voltage state to avoid the finger touch safety accident, namely the anode of the battery pack in the electric vehicle and the anode of the load are controlled to be in the disconnected state, and/or the cathode of the battery pack and the cathode of the load are controlled to be in the disconnected state, so that the safety requirement of preventing the finger touch is met.

Description

High-voltage safety control method and device for electric vehicle and vehicle

Technical Field

The disclosure relates to the field of vehicles, in particular to a high-voltage safety control method and device for an electric vehicle and the vehicle.

Background

In China, new energy vehicles are rapidly developed, the quantity of all electric vehicles is increased year by year, and fast charging supporting facilities are also rapidly developed, so that charging safety is more and more important under the background.

At present, in order to meet the requirement of the direct current charging port on finger touch prevention safety, the high-voltage power distribution system of the electric vehicle shown in fig. 1 is usually adopted, that is, a charging positive electrode contactor K5 and a charging negative electrode contactor K4 are arranged in a power distribution box, and when the whole vehicle is in a high-voltage state (a high-voltage state means that a positive electrode of a battery pack and a positive electrode of a load are in a conducting state, and a negative electrode of the battery pack and a negative electrode of the load are in a conducting state, that is, K2 and K3 are in a conducting state), the direct current charging port is disconnected from a high-voltage circuit of the electric vehicle by disconnecting K4. However, because the fast charging power is higher and higher at present, the specifications of K4 and K5 become larger and larger, the weight and the arrangement space are larger and larger, the corresponding cost is also improved, the cost competition of the electric vehicle is more and more serious at present, how to ensure the high-voltage safety of the electric vehicle, and the cost can be reduced, so that the problem which needs to be solved urgently in the electric vehicle industry is solved.

Disclosure of Invention

The object of the present disclosure is to meet the high pressure finger touch safety requirements and at least partially solve the above problems.

In one aspect, an embodiment of the present disclosure provides a high-voltage safety control method for an electric vehicle, which includes the following steps:

acquiring first information representing the vehicle speed and second information representing the state of a charging port cover;

determining whether the vehicle speed is greater than a threshold value according to the first information, and determining that the state of the charging port cover is an open state or a closed state according to the second information;

and when the vehicle speed is not greater than the threshold value and the charging port cover is in an open state, controlling the electric vehicle to be in a non-high-voltage state.

In a second aspect, an embodiment of the present disclosure provides an electric vehicle high-voltage safety control device, which includes:

at least one memory; and

at least one processor, the at least one memory stored with one or more instructions that when executed by the at least one processor, cause the apparatus to implement any of the possible electric vehicle high voltage safety control methods as described above in the first aspect.

In a third aspect, the disclosed embodiments provide a vehicle comprising the electric vehicle high-voltage safety control device of the second aspect.

By adopting the technical scheme, when the vehicle speed is not greater than the threshold value and the charging port cover is in the open state, the electric vehicle is controlled to be in the non-high-voltage state, namely when the finger touch safety possibly occurs, the electric vehicle is controlled to be in the non-high-voltage state to avoid the finger touch safety accident, namely the anode of the battery pack in the electric vehicle and the anode of the load are controlled to be in the disconnected state, and/or the cathode of the battery pack and the cathode of the load are controlled to be in the disconnected state, namely the K2 and/or K3 are disconnected, so that the safety requirement of preventing the finger touch is met.

Additional features and advantages of the disclosure will be set forth in the detailed description which follows.

Drawings

The accompanying drawings, which are included to provide a further understanding of the disclosure and are incorporated in and constitute a part of this specification, illustrate embodiments of the disclosure and together with the description serve to explain the disclosure without limiting the disclosure. In the drawings:

FIG. 1 is a schematic block diagram of a prior art electric vehicle high voltage distribution system;

FIG. 2 is a schematic block diagram of a first embodiment of an electric vehicle high voltage power distribution system of the present disclosure;

fig. 3 is a schematic block diagram of a second embodiment of the electric vehicle high-voltage power distribution system of the present disclosure;

fig. 4 is a schematic block diagram of a third embodiment of the electric vehicle high-voltage power distribution system of the present disclosure;

fig. 5, 6 and 7 are flowcharts of a first embodiment of the electric vehicle high-voltage safety control method of the present disclosure;

fig. 8, 9 and 10 are flowcharts illustrating a second embodiment of the electric vehicle high-voltage safety control method according to the present disclosure;

fig. 11, 12 and 13 are flowcharts of a third embodiment of the electric vehicle high-voltage safety control method of the present disclosure;

fig. 14, 15 and 16 are flowcharts illustrating a fourth embodiment of the electric vehicle high-voltage safety control method according to the present disclosure;

fig. 17 and 18 are flowcharts illustrating a fifth embodiment of the electric vehicle high-voltage safety control method according to the present disclosure;

fig. 19, 20 and 21 are flowcharts illustrating a sixth embodiment of the electric vehicle high-voltage safety control method according to the present disclosure;

fig. 22, 23 and 24 are flowcharts illustrating a sixth embodiment of the electric vehicle high-voltage safety control method according to the present disclosure;

fig. 25, 26 and 27 are flowcharts illustrating a seventh embodiment of the electric vehicle high-voltage safety control method according to the present disclosure;

fig. 28, 29 and 30 are flowcharts illustrating an eighth embodiment of the electric vehicle high-voltage safety control method according to the present disclosure;

fig. 31, 32 and 33 are flowcharts illustrating a ninth embodiment of the electric vehicle high-voltage safety control method according to the present disclosure;

fig. 34 and 35 are flowcharts illustrating a tenth embodiment of the electric vehicle high-voltage safety control method according to the present disclosure;

fig. 36 and 37 are flowcharts illustrating an eleventh embodiment of the electric vehicle high-voltage safety control method according to the present disclosure.

Detailed Description

The following detailed description of specific embodiments of the present disclosure is provided in connection with the accompanying drawings. It should be understood that the detailed description and specific examples, while indicating the present disclosure, are given by way of illustration and explanation only, not limitation.

As shown in fig. 2, the electric vehicle high voltage power distribution system of the present disclosure may include: the device comprises a positive bus, a negative bus, a first contactor, a second contactor, a third contactor, a fourth contactor and a pre-charging resistor.

The cable between the positive electrode of the battery pack and the positive electrode of the load is a positive electrode bus, and the cable between the negative electrode of the battery pack and the negative electrode of the load is a negative electrode bus.

The first contactor is connected with the pre-charging resistor in series, the first contactor and the pre-charging resistor after the series connection are connected at two ends of the second contactor in parallel, and the first contactor and the pre-charging resistor are communicated with a pre-charging loop before the electric vehicle is subjected to functions.

The second contactor is arranged on the positive bus, is in a non-high-voltage state when the electric vehicle is in a non-high-voltage state, is disconnected to disconnect the positive pole of the battery pack and the positive pole of the load, and is switched on to help the positive pole of the battery pack and the positive pole of the load to be switched on when the electric vehicle is in a high-voltage state.

The third contactor is arranged on the negative bus, the second contactor is disconnected to disconnect the negative electrode of the battery pack and the negative electrode of the load when the electric vehicle is in a non-high-voltage state, and the second contactor is connected to help the negative electrode of the battery pack and the negative electrode of the load to be connected when the electric vehicle is in a high-voltage state.

The fourth contactor is arranged on a cable with the negative electrode of the charging port connected to the negative bus, and when the electric vehicle is in a charging mode, the fourth contactor is conducted to help an external charging gun connected to the charging port to be conducted with the battery; when the electric vehicle is in the non-charging mode, the fourth contactor is opened to disconnect the external charging gun connected to the charging port from the battery.

A contactor is not arranged on a cable with the positive electrode of the charging port connected to the positive electrode bus; in other words, the cable in which the positive electrode of the charging port is connected to the positive electrode bus bar is not provided with a corresponding contactor having the same function as the fourth contactor, as compared with the cable in which the negative electrode of the charging port is connected to the negative electrode bus bar. As a variation, the positive electrode of the charging port is directly connected to the positive bus bar by a cable, and the direct connection by the cable means that no other electrical component is disposed on the cable.

As shown in fig. 3, another electric vehicle high voltage distribution system of the present disclosure may include: the device comprises a positive bus, a negative bus, a first contactor, a second contactor, a third contactor, a fifth contactor and a pre-charging resistor.

As can be seen from fig. 2 and 3, the difference with respect to fig. 2 is that the high voltage distribution system of the electric vehicle shown in fig. 3 includes a fifth contactor and does not include a fourth contactor, specifically:

the fifth contactor is arranged on a cable with the positive electrode of the charging port connected to the positive electrode bus, and is conducted to help an external charging gun connected to the charging port to be conducted with the battery when the electric vehicle is in a charging mode; when the electric vehicle is in the non-charging mode, the fifth contactor is opened to disconnect the external charging gun connected to the charging port from the battery.

A contactor is not arranged on a cable with the negative electrode of the charging port connected to the negative electrode bus; or, compared with fig. 2, the cable connecting the negative pole of the charging port to the negative pole bus bar is not provided with a corresponding contactor having the same function as the fourth contactor; still alternatively, the cable in which the negative electrode of the charging port is connected to the negative electrode bus bar is not provided with a corresponding contactor having the same function as the fifth contactor, as compared with the cable in which the positive electrode of the charging port is connected to the positive electrode bus bar. As a variation, the negative electrode of the charging port is directly connected to the negative electrode bus bar by a cable, and the direct connection by a cable means that no other electrical component is provided on the cable.

As shown in fig. 4, still another electric vehicle high voltage power distribution system of the present disclosure may include: the device comprises a positive bus, a negative bus, a first contactor, a second contactor, a third contactor and a pre-charging resistor.

As can be seen from fig. 2, the difference with respect to fig. 2 is that the electric vehicle high-voltage power distribution system shown in fig. 4 does not include a fourth contactor, specifically:

the cable connecting the negative electrode of the charging port to the negative electrode bus bar is not provided with a contactor, or compared with fig. 2, the cable connecting the negative electrode of the charging port to the negative electrode bus bar is not provided with a corresponding contactor having the same function as the fourth contactor. As a variation, the negative electrode of the charging port is directly connected to the negative electrode bus bar by a cable, and the direct connection by a cable means that no other electrical component is provided on the cable.

As can be seen from fig. 3, the difference with respect to fig. 3 is that the high voltage distribution system of the electric vehicle shown in fig. 4 does not include a fourth contactor, specifically:

the cable connecting the positive electrode of the charging port to the positive electrode bus bar is not provided with a contactor, or in comparison with fig. 3, the cable connecting the positive electrode of the charging port to the positive electrode bus bar is not provided with a corresponding contactor having the same function as the fifth contactor. As a variation, the positive electrode of the charging port is directly connected to the positive bus bar by a cable, and the direct connection by the cable means that no other electrical component is disposed on the cable.

The electric vehicle high-voltage power distribution system can be arranged inside the battery pack, can also be arranged outside the battery pack, and can also be partially arranged inside the battery pack and partially arranged outside the battery pack. The disclosed electric vehicle high voltage power distribution system mainly describes its safety problems, such as finger touch prevention safety problems, and describes its implementation of charging functions in the present disclosure.

The electric vehicle high-voltage safety control method is suitable for electric safety risks, such as touch safety risks, which may be brought by the electric vehicle high-voltage power distribution system with one or two contactors being cancelled in the figures 2 to 4. Wherein the elimination of one contactor is shown in fig. 2, and K5 is eliminated as compared to prior art fig. 1. The elimination of a contactor is also shown in fig. 3, which eliminates K4 as compared to prior art fig. 1. The elimination of two contactors is shown in fig. 4, and K4 and K5 are eliminated as compared to prior art fig. 1.

The disclosed electric vehicle high-voltage safety control method can also be applied to the electric vehicle high-voltage distribution system shown in prior art fig. 1, in particular, the electric safety risk, such as finger touch safety risk, which may be brought when at least one of K4 and K5 in the electric vehicle high-voltage distribution system shown in fig. 1 is sintered.

As shown in fig. 5, in a first preferred embodiment of the present disclosure, the electric vehicle high voltage safety control method of the present disclosure includes the steps of:

step S01, acquiring first information representing the vehicle speed and second information representing the state of the charging port cover;

the first information representing the vehicle speed can be obtained by detecting the vehicle speed sensor or by combining other sensors for calculation. The second information representing the state of the charging port cover can be detected by the charging port cover opening and closing state detection device.

Step S02, determining whether the vehicle speed is larger than a threshold value according to the first information, and determining that the state of the charging opening cover is an opening state or a closing state according to the second information;

and step S03, controlling the electric vehicle to be in a non-high-voltage state when the vehicle speed is not greater than the threshold value and the charging cover state is in an open state.

When the vehicle speed is less than the threshold value, personnel can touch the high-voltage metal part of the charging opening cover, and finger touch safety accidents and the like can occur. When the vehicle speed is greater than the threshold value, the person can not touch the high-voltage metal part of the charging opening cover basically.

When the charging port cover is in an open state, personnel can touch the high-voltage metal part of the charging port cover, and finger touch safety accidents and similar safety accidents can occur. When the charging opening cover is in a closed state, personnel cannot touch the high-voltage metal part of the charging opening cover.

When the vehicle speed is less than the threshold value, and the charging opening cover is in an open state, personnel can touch the high-voltage metal part of the charging opening cover, finger touching safety accidents and similar safety accidents can occur, and the electric vehicle is controlled to be in a non-high-voltage state in order to avoid the safety accidents that the personnel can touch the high-voltage metal part of the charging opening cover.

When the speed of a vehicle is greater than the threshold value, and the charging port cover state is the open state simultaneously, although the safety accident may appear for the charging port cover state is the open state, the electric motor car is in the driving process, in order to avoid arousing other safety accidents, can not directly control the electric motor car to be in non-high voltage state, in order to avoid the safety accident that probably takes place simultaneously, control the electric motor car and show warning information in order to remind the user.

The electric vehicle is controlled to be in a non-high-voltage state, and the second contactor which is arranged on the positive bus and used for disconnecting the positive pole of the battery pack from the positive pole of the load is controlled to be disconnected, or the third contactor which is arranged on the negative bus and used for disconnecting the negative pole of the battery pack from the negative pole of the load is controlled to be disconnected, or both the second contactor and the third contactor are controlled to be disconnected, or other devices capable of disconnecting the battery pack from the load can be controlled.

The electric vehicle is controlled to be in a non-high-voltage state, the electric vehicle can be switched from the high-voltage state to the non-high-voltage state, and the electric vehicle can also be kept in the non-high-voltage state. The electric vehicle is in a high-voltage state, namely a battery pack of the electric vehicle supplies power to a high-voltage load or receives electric energy of external high-voltage equipment. The electric vehicle is kept in a non-high voltage state, namely, the battery of the electric vehicle does not supply power to the high-voltage load and does not receive the electric energy of external high-voltage equipment.

In this embodiment, the first information and the second information are not acquired sequentially, and at the same time, the first information may be acquired first and then the second information may be acquired, or the second information may be acquired first and then the first information may be acquired.

In this embodiment, the determination of the vehicle speed and the threshold value and the determination of whether the charging port cover state is the open state or the closed state are not in sequence, and at the same time, the vehicle speed and the threshold value may be determined first and then the charging port cover state may be determined to be the open state or the closed state, or the vehicle speed and the threshold value may be determined first and then the charging port cover state may be determined to be the open state or the closed state. It can be understood that the related information is acquired first, and then the related judgment is performed.

Specifically, as shown in fig. 6, the electric vehicle high-voltage safety control method in an embodiment of the present disclosure includes the following steps:

step S01A, acquiring first information representing the vehicle speed;

step S02A, determining whether the vehicle speed is greater than a threshold value according to the first information; if the vehicle speed is greater than the threshold value, jumping to step S03A; if the vehicle speed is not greater than the threshold value, the process proceeds to step S04A.

In step S03A, the process ends.

Step S04A, acquiring second information representing the state of the charging port cover;

step S05A, determining the state of the charging opening cover to be an opening state or a closing state according to the second information; if the open/close state of the charging port cover is the closed state, the process goes to step S03A; if the open/close state of the charging port cover is the open state, the process proceeds to step S06A.

And step S06A, controlling the electric vehicle to be in a non-high-pressure state.

Judge earlier the speed of a motor vehicle and judge the benefit of flap state of charging again and lie in:

1. when the speed of a vehicle is greater than the threshold value, personnel can hardly touch the high-voltage metal part of the charging port cover, and meanwhile, the speed of the vehicle is greater than the threshold value and can not control the electric vehicle to be in a non-high-voltage state on the basis of driving safety consideration, so that the process can be finished. In addition, the state of the charging port cover can be continuously judged, and if the state of the charging port cover is in an open state, the electric vehicle is controlled to display reminding information, so that the electric vehicle is safer.

2. When the speed of a motor vehicle is less than the threshold value, personnel probably touch the high-pressure metal department of the flap that charges basically, judge the flap state that charges again, if the flap that charges is in the closed condition, then personnel do not have the risk of electrocution, the flap that charges is in the open condition, control electric motor car is in non-high-pressure state.

The sequence preferentially ensures the driving safety and simultaneously achieves the purposes of program saving and high-voltage safety electric shock prevention.

Specifically, as shown in fig. 7, the electric vehicle high-voltage safety control method in another specific embodiment of the present disclosure includes the following steps:

step S01B, acquiring second information representing the state of the charging port cover;

step S02B, determining the state of the charging port cover to be an opening state or a closing state according to the second information; if the open/close state of the charging port cover is the closed state, the process goes to step S03B; if the open/close state of the charging port cover is the open state, the process proceeds to step S04B.

In step S03B, the process ends.

Step S04B, acquiring first information representing the vehicle speed;

step S05B, determining whether the vehicle speed is greater than a threshold value according to the first information; if the vehicle speed is greater than the threshold value, jumping to step S06B; if the vehicle speed is not greater than the threshold value, the process proceeds to step S07B.

And step S06B, controlling the electric vehicle to display the reminding information.

And step S07B, controlling the electric vehicle to be in a non-high-pressure state.

Judge earlier that charge flap open mode judges the benefit of the speed of a motor vehicle again and lies in:

1. when the charging port cover is in a closed state, the personnel have no electric shock risk, and the process can be ended.

2. When the charging opening cover is in an open state, judging the vehicle speed information, if the vehicle speed is greater than a threshold value, basically, personnel cannot touch a high-voltage metal part of the charging opening cover, but potential risks exist, and controlling the electric vehicle to display reminding information; and if the speed of the electric vehicle is less than the threshold value, controlling the electric vehicle to be in a non-high-pressure state.

The sequence is simple, and the aims of driving safety and high-voltage safety electric shock prevention are simultaneously ensured.

As shown in fig. 8, on the basis of the first preferred embodiment of the present disclosure, the electric vehicle high voltage safety control method according to the second preferred embodiment of the present disclosure further includes the following steps:

step S11, acquiring third information representing whether the detection device is normal or not, wherein the detection device is used for detecting whether the detection device is in fault or not and detecting whether the charging port cover is in an open state or a closed state; the third information representing whether the detection device is normal or not can be detected by the detection device itself. Whether detection device detects oneself normally can prevent to appear misjudgement to the judgement that the flap state of charging is open state or closed state.

Step S12, determining whether the detection device is normal according to the third information; when the detection device is abnormal, the state of the charging port cover detected by the detection device is in an open state or a closed state, and thus no signal can be received. When the detection device is normal, the charging port cover state detected by the detection device is an open state or a closed state, and then a message can be collected.

Step S13, when the detection device is abnormal and the vehicle speed is not greater than the threshold value, controlling the electric vehicle to be in a non-high-pressure state; the detection device is abnormal, the state of the charging port cover cannot be known to be an open state or a closed state at the moment, the state of the charging port cover is the open state or the closed state, and the charging port cover may be the open state, so that safety risks exist. In order to prevent the occurrence of contact finger safety accidents and the like, when the detection device is abnormal and the speed of the electric vehicle is not greater than a threshold value, the electric vehicle is controlled to be in a non-high-voltage state.

The step S03 specifically includes: and when the detection device is normal, the charging port cover is in an open state and the vehicle speed is not greater than a threshold value, controlling the electric vehicle to be in a non-high-voltage state.

When the vehicle speed is less than the threshold value, and the state of the charging port cover obtained under the normal condition of the detection device is in an open state, personnel can possibly touch the high-voltage metal part of the charging port cover, finger touching safety accidents and similar safety accidents can occur, and in order to avoid the safety accidents that the personnel can touch the high-voltage metal part of the charging port cover, the electric vehicle is controlled to be in a non-high-voltage state.

When the speed of a vehicle is greater than the threshold value, and the detection device is normal, and the charging port cover state is the open state, although the safety accident may occur, the electric vehicle cannot be directly controlled to be in the non-high-voltage state in the driving process in order to avoid causing other safety accidents, and the electric vehicle is controlled to display the reminding information to remind the user in order to avoid the safety accident that may occur.

In this embodiment, the first information and the third information are not sequentially acquired, and at the same time, the first information may be acquired first and then the third information may be acquired, or the third information may be acquired first and then the first information may be acquired. It is of course understood that it is preferable to first obtain the third information and then obtain the second information.

In this embodiment, the determination of the vehicle speed and the threshold value and the determination of whether the detection device is normal are not in sequence, and at the same time, the determination of whether the detection device is normal after the determination of the vehicle speed and the threshold value may be performed, or the determination of whether the detection device is normal after the determination of the vehicle speed and the threshold value may be performed. It is understood that it is preferable to determine whether the detection device is normal, and then determine whether the charging port cover is in the open state or the closed state.

It can be understood that the related information is acquired first, and then the related judgment is performed.

Specifically, as shown in fig. 9, the electric vehicle high-voltage safety control method according to an embodiment of the present disclosure includes the following steps:

step S11A, acquiring first information representing the vehicle speed;

step S12A, determining whether the vehicle speed is greater than a threshold value according to the first information; if the vehicle speed is greater than the threshold value, jumping to step S13A; if the vehicle speed is not greater than the threshold value, the process proceeds to step S14A.

In step S13A, the process ends.

Step S14A, acquiring third information representing whether the detection device is normal or not;

step S15A, determining whether the detection device is normal according to the third information; if the detection device is abnormal, go to step S16A; if the detection means is normal, the process goes to step S17A.

And step S16A, controlling the electric vehicle to be in a non-high-pressure state.

Step S17A, acquiring second information representing the state of the charging port cover;

step S18A, determining the state of the charging opening cover to be an opening state or a closing state according to the second information; if the open/close state of the charging port cover is the closed state, the process goes to step S13A; if the open/close state of the charging port cover is the open state, the process proceeds to step S16A.

The sequence of the flow has the advantages that: after the vehicle speed is judged, and the vehicle speed is less than the threshold value, whether the detection device is normal needs to be judged; if the detection device is abnormal, the electric vehicle is directly controlled to be in a non-high-voltage state; the detection device is normal, judges the charging port cover state again, if the charging port cover is in the closed state, then personnel do not have the risk of electric shock, and the charging port cover is in the open state, and the control electric motor car is in non-high-voltage state.

Specifically, as shown in fig. 10, the electric vehicle high-voltage safety control method according to another specific embodiment of the present disclosure includes the following steps:

step S11B, acquiring third information representing whether the detection device is normal or not;

step S12B, determining whether the detection device is normal according to the third information; if the detection device is abnormal, go to step S13B; if the detection means is normal, the process goes to step S17B.

Step S13B, acquiring first information representing the vehicle speed;

step S14B, determining whether the vehicle speed is greater than a threshold value according to the first information; if the vehicle speed is greater than the threshold value, jumping to step S15B; if the vehicle speed is not greater than the threshold value, jumping to step S16B;

and step S15B, controlling the electric vehicle to display the reminding information.

And step S16B, controlling the electric vehicle to be in a non-high-pressure state.

Step S17B, acquiring second information representing the state of the charging port cover;

step S18B, determining the state of the charging opening cover to be an opening state or a closing state according to the second information; if the open/close state of the charging port cover is the closed state, the process goes to step S19B; if the open/close state of the charging port cover is the open state, the process proceeds to step S13B.

In step S19B, the process ends.

The sequence of the flow has the advantages that: the first step is to judge whether the detection device is normal; if the detection device is abnormal, judging the vehicle speed information, if the vehicle speed is greater than a threshold value, prompting by an instrument, and if the vehicle speed is less than the threshold value, controlling the electric vehicle to be in a non-high-voltage state;

the detection device is normal, the opening and closing state of the charging opening cover is judged, if the charging opening cover is in the closing state, the personnel do not have electric shock risks, if the charging opening cover is in the opening state, the vehicle speed information is judged again, the vehicle speed is greater than a threshold value and needs to be reminded by an instrument, and if the vehicle speed is less than the threshold value, the electric vehicle is controlled to be in a non-high-voltage state.

As shown in fig. 11, on the basis of the second preferred embodiment of the present disclosure, the electric vehicle high voltage safety control method according to the third preferred embodiment of the present disclosure further includes the following steps:

step S41, acquiring fourth information representing whether the charging port is connected with a charging gun or not; wherein, the fourth information that whether the sign mouth that charges is connected with the rifle that charges can be obtained through the present components and parts on the car.

Step S42, determining whether the charging port is connected with the charging gun according to the fourth information; when the rifle that charges is connected to the mouth that charges, then personnel can not touch the high-pressure metal department of the flap that charges, also can not be based on prevent that the finger touches safe reason control electric motor car and be in non-high-pressure state, because will satisfy the possible demand of charging of electric motor car.

Step S43, step S13 specifically includes: when the detection device is abnormal, the vehicle speed is not greater than the threshold value and the charging port is not connected with the charging gun, controlling the electric vehicle to be in a non-high-voltage state; when the detection device is normal, the charging port cover is in an open state, the vehicle speed is not greater than a threshold value, and the charging port is not connected with a charging gun, controlling the electric vehicle to be in a non-high-voltage state;

when the detection device is abnormal, the vehicle speed is not greater than the threshold value and the charging port is connected with the charging gun, controlling the electric vehicle to be in a state capable of responding to a charging process;

when the detection device is normal, the charging port cover is in an open state, the vehicle speed is not greater than the threshold value, and the charging port is connected with the charging gun, the electric vehicle is controlled to be in a state capable of responding to the charging process.

In this embodiment, the obtaining of the first information, the obtaining of the second information, the obtaining of the third information, and the obtaining of the fourth information are not in sequence, and may be performed simultaneously or sequentially. It is of course understood that it is preferable to first obtain the third information and then obtain the second information.

In this embodiment, the determination of the vehicle speed and the threshold value, the determination of whether the charging port is connected to the charging gun, and the determination of whether the detection device is normal are not sequential, and may be performed sequentially, or may be performed sequentially, and the determination of the vehicle speed and the threshold value, the determination of whether the charging port is connected to the charging gun, and the determination of whether the detection device is normal are performed sequentially. It is understood that it is preferable to determine whether the detection device is normal, and then determine whether the charging port cover is in the open state or the closed state.

The charging port is connected with the charging gun, the charging port cover state is indicated to be an open state, namely, the second information representing the charging port cover state is obtained, and the charging port can be connected with the charging gun through detecting to obtain when the charging port cover state is the open state. In order to meet the charging requirement, in a specific embodiment, the electric vehicle is controlled to be in a state capable of responding to the charging process when the charging port is detected to be connected with the charging gun.

When the speed of the electric vehicle is not greater than the threshold value and the charging port is connected with the charging gun (the state of the charging port cover is represented as an open state), controlling the electric vehicle to be in a state capable of responding to a charging process; the speed of the electric vehicle is greater than the threshold value, and when the charging port is connected with the charging gun (the state of the charging port cover is represented as an open state), the electric vehicle is controlled to be in a state capable of responding to a charging process so as to meet the requirement of driving charging, and if rescue is carried out, the vehicle is charged.

Specifically, as shown in fig. 12, the electric vehicle high-voltage safety control method according to an embodiment of the present disclosure includes the following steps:

step S31B, acquiring third information representing whether the detection device is normal or not;

step S32B, determining whether the detection device is normal according to the third information; if the detection device is abnormal, go to step S33B; if the detection device is normal, the process goes to step S310B.

Step S33B, acquiring first information representing the vehicle speed;

step S34B, determining whether the vehicle speed is greater than a threshold value according to the first information; if the vehicle speed is greater than the threshold value, jumping to step S35B; if the vehicle speed is not greater than the threshold value, the process proceeds to step S36B.

And step S35B, controlling the electric vehicle to display the reminding information.

Step S36B, acquiring fourth information representing whether the charging port is connected with the charging gun or not;

step S37B, determining whether the charging port is connected with the charging gun according to the fourth information; if the charging port is connected with the charging gun, the step goes to step S38B; if the charging port is not connected with the charging gun, jumping to step S39B;

and step S38B, controlling the electric vehicle to be in a state capable of responding to the charging process.

And step S39B, controlling the electric vehicle to be in a non-high-pressure state.

Step S310B, acquiring second information representing the state of the charging port cover;

step S311B, determining the state of the charge flap as an open state or a closed state according to the second information; if the open/close state of the charging port cover is the closed state, the process goes to step S312B; if the open/close state of the charging port cover is the open state, the process proceeds to step S33B.

In step S312B, the process ends.

The process has the advantages that whether the detection device is normal or not is judged, whether the charging opening cover is opened or not is judged, misjudgment of the opening and closing state of the charging opening cover is prevented, and whether the vehicle speed is judged and whether a charging gun is connected or not is judged; the abnormal state of the detection device is judged, the vehicle speed information is judged, if the vehicle speed is greater than a threshold value, the instrument reminds to prevent the open state of the charging port from being abnormal and misjudged to cause electric shock and hurt people; if the vehicle speed is less than the threshold value, judging whether the charging port is connected with a charging gun, if the charging gun is connected, the charging gun is in a state capable of responding to the charging process, if the charging gun is not connected, controlling the electric vehicle to be in a non-high-voltage state, namely, if the detection device is abnormal, the electric vehicle is in a state capable of responding to the charging process;

if the detection device is normal, the state of the charging opening cover is detected, the charging opening cover is in a closed state, and people have no electric shock risk; if the charging port cover is in an open state, judging vehicle speed information, and if the vehicle speed is greater than a threshold value, reminding by an instrument to prevent the open state of the charging port from being abnormal and misjudged to cause electric shock and hurt people; if the speed of the vehicle is less than the threshold value, whether the charging port is connected with the charging gun or not is judged, if the charging gun is connected, the charging gun is in a state capable of responding to the charging process, the charging gun is not connected, and the electric vehicle is controlled to be in a non-high-voltage state.

Specifically, as shown in fig. 13, the electric vehicle high-voltage safety control method according to an embodiment of the present disclosure includes the following steps:

step S31C, acquiring first information representing the vehicle speed;

step S32C, determining whether the vehicle speed is greater than a threshold value according to the first information; if the vehicle speed is greater than the threshold value, jumping to step S33C; if the vehicle speed is not greater than the threshold value, the process proceeds to step S34C.

In step S33C, the process ends.

Step S34C, acquiring third information representing whether the detection device is normal or not;

step S35C, determining whether the detection device is normal according to the third information; if the detection device is abnormal, go to step S36C; if the detection device is normal, the process goes to step S310C.

Step S36C, acquiring fourth information representing whether the charging port is connected with the charging gun or not;

step S37C, determining whether the charging port is connected with the charging gun according to the fourth information; if the charging port is connected with the charging gun, the step goes to step S38C; if the charging port is not connected with the charging gun, jumping to step S39C;

and step S38C, controlling the electric vehicle to be in a state capable of responding to the charging process.

And step S39C, controlling the electric vehicle to be in a non-high-pressure state.

Step S310C, acquiring second information representing the state of the charging port cover;

step S311C, determining the state of the charge flap as an open state or a closed state according to the second information; if the open/close state of the charging port cover is the closed state, the process goes to step S33C; if the open/close state of the charging port cover is the open state, the process proceeds to step S36C.

The process has the advantages that the vehicle speed information is judged firstly, and when the vehicle speed is greater than the threshold value, normal running cannot be influenced; if the vehicle speed is less than the threshold value, judging whether the detection device is normal or not, and preventing the open state of the charging opening cover from being misjudged; detection device is normal, judges the flap switching state that charges again, if the flap that charges closes, personnel do not have the risk of electric shock, if the flap that charges opens, judge the mouth that charges and be connected with the rifle information that charges, if the mouth that charges has the connection rifle that charges, the control electric motor car is in the state that can respond the flow of charging, if the mouth that charges does not connect the rifle that charges, the control electric motor car is in non-high-voltage state, personnel do not have the risk of electric shock.

The detection device is unusual, if the mouth that charges has the connection rifle that charges, the control electric motor car is in the state that can respond the flow of charging, if the mouth that charges does not connect the rifle that charges, the control electric motor car is in non-high-voltage state, personnel's no electric shock risk.

As shown in fig. 14, based on a preferred embodiment, the electric vehicle high voltage safety control method according to a fourth preferred embodiment of the present disclosure further includes the following steps:

step S21, acquiring fourth information representing whether the charging port is connected with a charging gun or not; wherein, the fourth information that whether the sign mouth that charges is connected with the rifle that charges can be obtained through the present components and parts on the car.

Step S22, determining whether the charging port is connected with the charging gun according to the fourth information; when the charging port is connected with the charging gun, personnel can not touch the high-voltage metal part of the charging port cover.

Step S23, when the vehicle speed is not greater than the threshold value, the charging port cover state is open state and the charging port is connected with the charging gun, the electric vehicle is controlled to be in a state capable of responding to the charging process; the state that the electric vehicle is in the responsive charging process means that the electric vehicle can enter a charging state from a non-charging state, and can also keep the charging state in the charging state and be switched to the non-charging state when the charging is finished. When the rifle that charges is connected to the mouth that charges, then personnel can not touch the high-pressure metal department of the flap that charges, because of will satisfy the possible demand of charging of electric motor car simultaneously, then the electric motor car need be in the state that can respond the action of charging, can not be based on promptly and prevent that the reason control electric motor car that touches safety is in non-high-voltage state.

Step S03 specifically includes: and when the vehicle speed is not greater than the threshold value, the charging port cover is in an open state, and the charging port is not connected with the charging gun, controlling the electric vehicle to be in a non-high-voltage state. At the moment, a person may touch the high-voltage metal part of the charging opening cover, a finger touching safety accident and similar safety accidents may occur, and the electric vehicle is controlled to be in a non-high-voltage state in order to avoid the safety accident that the person may touch the high-voltage metal part of the charging opening cover. When the speed of a motor vehicle is not greater than the threshold value, the charging port cover state is the open state and the charging port is not connected with the charging gun, the electric vehicle is in a non-high voltage state, if the charging requirement exists, the charging gun can be connected to the charging port, and when the charging port is connected with the charging gun, the electric vehicle is controlled to be in a state capable of responding to a charging process.

In this embodiment, the obtaining of the first information, the obtaining of the second information, and the obtaining of the fourth information are not in sequence, and may be performed simultaneously or sequentially.

In this embodiment, the determination of the vehicle speed and the threshold value, the determination of whether the charging port cover is in the open state or the closed state, and the determination of whether the charging port is connected with the charging gun are not sequential, and may be performed sequentially, or may be performed sequentially, and the determination of the vehicle speed and the threshold value, the determination of whether the charging port cover is in the open state or the closed state, and the determination of whether the charging port is connected with the charging gun are arranged. It can be understood that the related information is acquired first, and then the related judgment is performed.

Specifically, as shown in fig. 15, the electric vehicle high-voltage safety control method according to an embodiment of the present disclosure includes the following steps:

step S21A, acquiring first information representing vehicle speed;

step S22A, determining whether the vehicle speed is greater than a threshold value according to the first information; if the vehicle speed is greater than the threshold value, jumping to step S23A; if the vehicle speed is not greater than the threshold value, the process proceeds to step S24A.

In step S23A, the process ends.

Step S24A, acquiring second information representing the state of the charging port cover;

step S25A, determining the state of the charging opening cover to be an opening state or a closing state according to the second information; if the open/close state of the charging port cover is the closed state, the process goes to step S23A; if the open/close state of the charging port cover is the open state, the process proceeds to step S26A.

Step S26A, acquiring fourth information representing whether the charging port is connected with the charging gun or not;

step S27A, determining whether the charging port is connected with the charging gun according to the fourth information; if the charging port is connected to the charging gun, go to step S28A; if the charging port is not connected with the charging gun, the step goes to step S29A;

and step S28A, controlling the electric vehicle to be in a state capable of responding to the charging process.

And step S29A, controlling the electric vehicle to be in a non-high-pressure state.

The benefits of this procedure are: after the vehicle speed and the charging port cover state are judged, whether a gun inserting signal exists needs to be judged; the speed of a motor vehicle is less than the threshold value and the flap that charges is in the open mode, if there is the rifle signal of inserting, then the control electric motor car is in the state that can respond the flow of charging, if do not have the rifle signal of inserting, needs control electric motor car to be in non-high-voltage state, prevents that personnel from touching the mouth metal department that charges and being electrocuted.

Specifically, as shown in fig. 16, the electric vehicle high-voltage safety control method according to an embodiment of the present disclosure includes the following steps:

step S21B, acquiring second information representing the state of the charging port cover;

step S22B, determining the state of the charging opening cover to be an opening state or a closing state according to the second information; if the open/close state of the charging port cover is the closed state, the process goes to step S23B; if the open/close state of the charging port cover is the open state, the process proceeds to step S24B.

In step S23B, the process ends.

Step S24B, acquiring first information representing the vehicle speed;

step S25B, determining whether the vehicle speed is greater than a threshold value according to the first information; if the vehicle speed is greater than the threshold value, jumping to step S26B; if the vehicle speed is not greater than the threshold value, the process proceeds to step S27B.

And step S26B, controlling the electric vehicle to display the reminding information.

Step S27B, acquiring fourth information representing whether the charging port is connected with the charging gun or not;

step S28B, determining whether the charging port is connected with the charging gun according to the fourth information; if the charging port is connected with the charging gun, the step goes to step S29B; if the charging port is not connected with the charging gun, jumping to step S210B;

and step S29B, controlling the electric vehicle to be in a state capable of responding to the charging process.

And step S210B, controlling the electric vehicle to be in a non-high-pressure state.

The process has the advantages that the opening and closing state of the charging opening cover is judged firstly, then the vehicle speed information is judged, and finally whether the charging opening is connected with the charging gun is judged so as to control the electric vehicle to be in a state capable of responding to the charging process; the charging opening cover is in an open state, and when the vehicle speed is greater than a threshold value, the meter reminds; the charging port cover is in an open state, when the vehicle speed is less than a threshold value, whether the charging port is connected with a charging gun or not is judged, and if yes, the electric vehicle is controlled to be in a state capable of responding to a charging process; if not, the control electric motor car is in non-high-voltage state, realizes neither influencing normal function and uses, can also prevent that personnel from electrocuteeing in charging port department.

As shown in fig. 17, on the basis of the fourth preferred embodiment of the present disclosure, the electric vehicle high-voltage safety control method according to the fifth preferred embodiment of the present disclosure further includes the following steps:

step S31, acquiring third information representing whether the detection device is normal or not, wherein the detection device is used for detecting whether the detection device breaks down or not and detecting whether the state of the charging port cover is in an open state or a closed state; the third information representing whether the detection device is normal or not can be detected by the detection device itself. Whether detection device detects oneself normally can prevent to appear misjudgement to the judgement that the flap state of charging is open state or closed state.

Step S32, determining whether the detection device is normal according to the third information; when the detection device is abnormal, the state of the charging port cover detected by the detection device is in an open state or a closed state, and thus no signal can be received. When the detection device is normal, the charging port cover state detected by the detection device is an open state or a closed state, and then a message can be collected.

Step S33, when the detection device is abnormal and the vehicle speed is not greater than the threshold value, controlling the electric vehicle to be in a non-high-pressure state; when the detection device is abnormal, the state of the charging port cover cannot be known to be an open state or a closed state, the state of the charging port cover is the open state or the closed state, and the charging port cover may be in the open state, so that safety risk exists; the charging port cover state is an open state or a closed state, and the charging port cover state can also be a closed state, so that no safety risk exists. In order to avoid possible occurrence of contact finger safety accidents and similar safety accidents, when the detection device is abnormal, the vehicle speed is not greater than the threshold value and the charging port is not connected with the charging gun, the electric vehicle is controlled to be in a non-high-voltage state.

Step S23 specifically includes:

when the detection device is normal, the charging port cover is in an open state, the vehicle speed is not greater than a threshold value, and the charging port is connected with the charging gun, controlling the electric vehicle to be in a state capable of responding to a charging process;

when the detection device is normal, the charging port cover is in an open state, the vehicle speed is not greater than the threshold value, and the charging port is not connected with the charging gun, the electric vehicle is controlled to be in a non-high-voltage state.

Specifically, as shown in fig. 18, the electric vehicle high-voltage safety control method according to an embodiment of the present disclosure includes the following steps:

step S31A, acquiring first information representing the vehicle speed;

step S32A, determining whether the vehicle speed is greater than a threshold value according to the first information; if the vehicle speed is greater than the threshold value, jumping to step S33A; if the vehicle speed is not greater than the threshold value, the process proceeds to step S34A.

In step S33A, the process ends.

Step S34A, acquiring third information representing whether the detection device is normal or not;

step S35A, determining whether the detection device is normal according to the third information; if the detection device is abnormal, go to step S36A; if the detection means is normal, the process goes to step S37A.

And step S36A, controlling the electric vehicle to be in a non-high-pressure state.

Step S37A, acquiring second information representing the state of the charging port cover;

step S38A, determining the state of the charging opening cover to be an opening state or a closing state according to the second information; if the open/close state of the charging port cover is the closed state, the process goes to step S33A; if the open/close state of the charging port cover is the open state, the process proceeds to step S39A.

Step S39A, acquiring fourth information representing whether the charging port is connected with the charging gun or not;

step S310A, determining whether the charging port is connected with the charging gun according to the fourth information; if the charging port is connected to the charging gun, go to step S311A; if the charging port is not connected with the charging gun, jumping to step S36A;

in step S311A, the electric vehicle is controlled to be in a state responsive to the charging process.

The process has the advantages that: firstly, judging whether the vehicle speed is greater than a threshold value, ending the process when the vehicle speed is greater than the threshold value, basically preventing people from electric shock risks, and judging whether a detection device is normal or not when the vehicle speed is less than the threshold value; if the detection device is abnormal and the speed is less than the threshold value, controlling the electric vehicle to be in a non-high-pressure state; if the detection device is normal and the vehicle speed is less than the threshold value, the state of the charging port cover needs to be judged, the charging port cover is in a closed state, personnel have no electric shock risk, if the charging port cover is in an open state, whether the charging port is connected with a charging gun is further judged, and if the charging port is connected with the charging gun, the electric vehicle is controlled to be in a state capable of responding to a charging process; if not, the electric vehicle is controlled to be in a non-high-voltage state, and the risk of electric shock of personnel is avoided.

As shown in fig. 19, on the basis of the first preferred embodiment of the present disclosure, the electric vehicle high voltage safety control method according to the sixth preferred embodiment of the present disclosure further includes the following steps:

step S51, acquiring fifth information representing whether the contactor is sintered and whether electric leakage exists between the battery pack and the load; the contactor comprises a fourth contactor arranged on a cable between the negative pole of the charging port and the negative pole bus, and the fourth contactor is shown in FIG. 2; or the contactor comprises a fifth contactor arranged on the cable between the positive pole of the charging port and the positive pole bus, as shown in fig. 3; alternatively, the contactors include a fourth contactor disposed on the cable between the charging port cathode and the cathode bus bar and a fifth contactor disposed on the cable between the charging port anode and the anode bus bar, as shown in fig. 1. Contactor sintering means that the contactor is always in a conducting state, cannot be normally switched to a disconnecting state, and can be detected through a sintering detection device. The detection of electrical leakage between the battery pack and the load may be detected by an electrical leakage detection device.

Step S52, determining whether the electric vehicle has electric leakage and contactor sintering according to the fifth information;

step S53, when the speed is not more than the threshold value and the electric vehicle has electric leakage or/and sintering, controlling the electric vehicle to be in a non-high-voltage state;

the step S03 specifically includes: and when the speed is not greater than the threshold value, the electric vehicle does not have electric leakage and sintering, and the charging port cover is in an open state, controlling the electric vehicle to be in a non-high-voltage state.

If the electric vehicle has electric leakage or/and when sintering, then charge mouthful department will take high pressure, has great electric shock safety risk this moment, in order to avoid personnel to take place the incident, should control the electric vehicle and be in non-high pressure state. However, if the speed of the electric vehicle is greater than the threshold value, the electric vehicle cannot be directly controlled to be in a non-high-voltage state in order to avoid causing other safety accidents in the driving process, and meanwhile, the electric vehicle is controlled to display reminding information to remind a user in order to avoid possible safety accidents. In addition, the charging port can be in a state of being out of contact when high voltage exists, and the method specifically comprises the following steps: if the electric vehicle is in a high-voltage state, the following steps of: 1. when the charging opening cover is in a closed state, the charging opening cover is kept in the closed state and cannot be opened; 2. when the charging opening cover is in an open state and is connected with a charging gun, the charging gun is controlled to be in a state that the charging gun cannot be pulled out; 3. when the charging opening cover is in an open state but the charging gun is not connected, the charging opening cover is controlled to be switched to a closed state, and the charging opening cover is kept in the closed state and cannot be opened. If the charging opening cover is in a closed state, and meanwhile, the electric vehicle needs to be charged, the electric vehicle can be controlled to cut off high voltage firstly, then the charging opening cover is switched to an open state, the recharging gun is inserted into the charging opening, the recharging gun is controlled to be in a state that the recharging gun cannot be pulled out, and finally the recharging gun is switched to a high-voltage state from a non-high-voltage state.

In this embodiment, the obtaining of the first information, the obtaining of the second information, and the obtaining of the fifth information are not in sequence, and may be performed simultaneously or sequentially.

In this embodiment, the determination of the vehicle speed and the threshold value, the determination of whether the charging port cover is in the open state or the closed state, and the determination of whether the electric vehicle has electric leakage or/and sintering are not sequential, and may be performed sequentially, or may be performed sequentially, and the determination of the vehicle speed and the threshold value, the determination of whether the charging port cover is in the open state or the closed state, and the determination of whether the electric vehicle has electric leakage or/and sintering are arranged.

Specifically, as shown in fig. 20, the electric vehicle high-voltage safety control method according to an embodiment of the present disclosure includes the following steps:

step S51A, acquiring first information representing the vehicle speed;

step S52A, determining whether the vehicle speed is greater than a threshold value according to the first information; if the vehicle speed is not greater than the threshold value, the process proceeds to step S53A.

Step S53A, acquiring fifth information indicating whether the contactor is sintered and whether there is electrical leakage between the battery pack and the load;

step S54A, determining whether the electric vehicle has electric leakage and contactor sintering according to the fifth information; if the electric vehicle has electric leakage or/and sintering, jumping to step S55A; if the electric vehicle does not have electric leakage and is not sintered, the process proceeds to step S56A.

And step S55A, controlling the electric vehicle to be in a non-high-pressure state.

Step S56A, acquiring second information representing the state of the charging port cover;

step S57A, determining the state of the charge flap to be in an open state or a closed state according to the second information; if the open/close state of the charging port cover is the closed state, the process goes to step S58A; if the open/close state of the charging port cover is the open state, the process proceeds to step S55A.

In step S58A, the process ends.

In step S52A, if the vehicle speed is greater than the threshold value, go to step S59A;

step S59A, acquiring fifth information indicating whether the contactor is sintered and whether there is electrical leakage between the battery pack and the load;

step S510A, determining whether the electric vehicle has electric leakage and contactor sintering according to the fifth information; if the electric vehicle has electric leakage or/and sintering, jumping to step S511A; if the electric vehicle does not have leakage and sintering, the process goes to step S58A.

And step S511A, controlling the electric vehicle to display the reminding information.

The process has the advantages that after the vehicle speed information is judged, whether the contactor is sintered or not and whether electric leakage exists between the battery pack and the load or not need to be judged, namely, the fault judgment needs to be carried out on the whole vehicle; if the whole vehicle has electric leakage or sintering, when the vehicle speed is greater than a threshold value, an instrument reminds that the vehicle speed is less than the threshold value, the electric vehicle is controlled to be in a non-high-voltage state, and personnel have no electric shock risk; if the whole vehicle does not have electric leakage or sintering, when the vehicle speed is greater than a threshold value, the personnel do not have electric shock risk, and the vehicle speed is less than the threshold value, the open state of the charging opening cover is judged; if the charging port cover is opened, the control electric vehicle is in a non-high-voltage state, and if the charging port cover is closed, the personnel have no electric shock risk.

Specifically, as shown in fig. 21, the electric vehicle high-voltage safety control method according to an embodiment of the present disclosure includes the following steps:

step S51B, acquiring fifth information representing whether the contactor is sintered and whether electric leakage exists between the battery pack and the load;

step S52B, determining whether the electric vehicle has electric leakage and contactor sintering according to the fifth information; if the electric vehicle has electric leakage or/and sintering, jumping to step S53B; if the electric vehicle has no leakage and no sintering, the process proceeds to step S57B.

Step S53B, acquiring first information representing the vehicle speed;

step S54B, determining whether the vehicle speed is greater than a threshold value according to the first information; if the vehicle speed is greater than the threshold value, jumping to step S55B; if the vehicle speed is not greater than the threshold value, the process proceeds to step S56B.

And step S55B, controlling the electric vehicle to display the reminding information.

And step S56B, controlling the electric vehicle to be in a non-high-pressure state.

Step S57B, acquiring second information representing the state of the charging port cover;

step S58B, determining the state of the charging opening cover to be an opening state or a closing state according to the second information; if the open/close state of the charging port cover is the closed state, the process goes to step S59B; if the open/close state of the charging port cover is the open state, the process proceeds to step S53B.

In step S59B, the process ends.

The process has the advantages that whether the contactor is sintered or not and whether electric leakage exists between the battery pack and the load or not are judged at first, namely whether the whole vehicle has faults or not is judged at first; if electric leakage or sintering exists, the vehicle speed needs to be judged, namely, normal running cannot be influenced when the vehicle speed is larger than a threshold value, the vehicle speed can be reminded by an instrument, and the electric vehicle is controlled to be in a non-high-voltage state when the vehicle speed is smaller than the threshold value, so that personnel have no electric shock risk; if the leakage or sintering is not in process, the open-close state of the charging port cover is judged, the charging port cover is closed, and personnel have no electric shock risk; the charging port cover is opened, the high-voltage metal at the charging port is in a touch state, the vehicle speed needs to be judged, the vehicle speed is greater than a threshold value, normal running cannot be influenced, but the vehicle speed needs to be reminded by an instrument, the vehicle speed is less than the threshold value, the electric vehicle is controlled to be in a non-high-voltage state, and no electric shock risk exists for personnel.

As shown in fig. 22, on the basis of the sixth preferred embodiment of the present disclosure, the electric vehicle high voltage safety control method of the seventh preferred embodiment of the present disclosure further includes the steps of:

step S61, acquiring third information representing whether the detection device is normal or not, wherein the detection device is used for detecting whether the detection device breaks down or not and detecting whether the state of the charging port cover is in an open state or a closed state; the third information representing whether the detection device is normal or not can be detected by the detection device itself. Whether detection device detects oneself normally can prevent to appear misjudgement to the judgement that the flap state of charging is open state or closed state.

Step S62, determining whether the detection device is normal according to the third information; when the detection device is abnormal, the state of the charging port cover detected by the detection device is in an open state or a closed state, and thus no signal can be received. When the detection device is normal, the charging port cover state detected by the detection device is an open state or a closed state, and then a message can be collected.

Step S63, when the detection device is abnormal and the vehicle speed is not greater than the threshold value, controlling the electric vehicle to be in a non-high-pressure state; when the detection device is abnormal, the state of the charging port cover cannot be known to be an open state or a closed state, the state of the charging port cover is the open state or the closed state, and the charging port cover may be in the open state, so that safety risk exists; the charging port cover state is an open state or a closed state, and the charging port cover state can also be a closed state, so that no safety risk exists. In order to prevent the occurrence of contact finger safety accidents and the like, when the detection device is abnormal and the speed of the electric vehicle is not greater than a threshold value, the electric vehicle is controlled to be in a non-high-voltage state.

The step S53 specifically includes: when the detection device is normal, the speed is not greater than the threshold value and the electric vehicle has electric leakage or/and sintering, controlling the electric vehicle to be in a non-high-voltage state; and when the detection device is normal, the charging port cover is in an open state, the vehicle speed is not greater than a threshold value, the electric vehicle does not have electric leakage and sintering, and the electric vehicle is controlled to be in a non-high-voltage state.

In this embodiment, the obtaining of the first information, the obtaining of the second information, the obtaining of the third information, and the obtaining of the fifth information are not in sequence, and may be simultaneously, or may be in sequence, and the obtaining of the first information, the obtaining of the second information, the obtaining of the third information, and the obtaining of the fifth information are arranged. It is of course understood that it is preferable to first obtain the third information and then obtain the second information.

In this embodiment, the determination of the vehicle speed and the threshold value, the determination of whether the detection device is normal and the determination of whether the electric vehicle has electric leakage or/and sintering are not sequential, and may be performed simultaneously or sequentially by determining the magnitude of the vehicle speed and the threshold value, determining whether the detection device is normal and determining that the electric vehicle has electric leakage or/and sintering. It is understood that it is preferable to determine whether the detection device is normal, and then determine whether the charging port cover is in the open state or the closed state.

Specifically, as shown in fig. 23, the electric vehicle high-voltage safety control method according to an embodiment of the present disclosure includes the following steps:

step S61A, acquiring first information representing vehicle speed;

step S62A, determining whether the vehicle speed is greater than a threshold value according to the first information; if the vehicle speed is not greater than the threshold value, the process proceeds to step S63A.

Step S63A, acquiring third information representing whether the detection device is normal or not;

step S64A, determining whether the detection device is normal according to the third information; if the detection device is abnormal, go to step S65A; if the detection means is normal, the process goes to step S66A.

And step S65A, controlling the electric vehicle to be in a non-high-pressure state.

Step S66A, acquiring fifth information representing whether the contactor is sintered and whether electric leakage exists between the battery pack and the load;

step S67A, determining whether the electric vehicle has electric leakage and contactor sintering according to the fifth information; if the electric vehicle has electric leakage or/and sintering, jumping to step S65A; if the electric vehicle has no leakage and no sintering, the process goes to step S68A.

Step S68A, acquiring second information representing the state of the charging port cover;

step S69A, determining the state of the charging opening cover to be an opening state or a closing state according to the second information; if the open/close state of the charging port cover is the closed state, the process goes to step S610A; if the open/close state of the charging port cover is the open state, the process proceeds to step S65A.

In step S610A, the process ends.

In step S62A, if the vehicle speed is greater than the threshold value, go to step S611A;

step S611A, acquiring fifth information indicating whether the contactor is sintered and whether there is electrical leakage between the battery pack and the load;

step S612A, determining whether the electric vehicle has electric leakage and contactor sintering according to the fifth information; if the electric vehicle has electric leakage or/and sintering, jumping to step S613A; if the electric vehicle has no leakage and no sintering, the process goes to step S610A.

And step S613A, controlling the electric vehicle to display the reminding information.

The process has the advantages that the vehicle speed is judged firstly, and when the vehicle speed is smaller than a threshold value, whether the detection device is normal needs to be judged so as to prevent the open-close state of the charging port from being judged by mistake; the abnormality of the device is detected, the electric vehicle is controlled to be in a non-high-voltage state, and personnel have no electric shock risk; the detection device is normal, whether the contactor is sintered or not and whether electric leakage exists between the battery pack and the load or not are judged, and if the electric leakage exists, the electric vehicle is controlled to be in a non-high-voltage state; if there is not electric leakage or sintering, judge the open-close state of charging the flap, the flap that charges opens, and the control electric motor car is in non-high-voltage state, and the flap that charges closes, personnel's no electric shock risk.

Specifically, as shown in fig. 24, the electric vehicle high-voltage safety control method according to an embodiment of the present disclosure includes the following steps:

step S61B, acquiring third information representing whether the detection device is normal or not;

step S62B, determining whether the detection device is normal according to the third information; if the detection device is abnormal, go to step S63B; if the detection means is normal, the process goes to step S67A.

Step S63B, acquiring first information representing the vehicle speed;

step S64B, determining whether the vehicle speed is greater than a threshold value according to the first information; if the vehicle speed is not greater than the threshold value, the process proceeds to step S66B.

And step S66B, controlling the electric vehicle to be in a non-high-pressure state.

Step S67B, acquiring fifth information representing whether the contactor is sintered and whether electric leakage exists between the battery pack and the load;

step S68B, determining whether the electric vehicle has electric leakage and contactor sintering according to the fifth information; if the electric vehicle has electric leakage or/and sintering, jumping to step S63B; if the electric vehicle does not have electric leakage and sintering, the process goes to step S69B.

Step S69B, acquiring second information representing the state of the charging port cover;

step S610B, determining the state of the charge flap as an open state or a closed state according to the second information; if the open/close state of the charging port cover is the closed state, the process goes to step S63B; if the open/close state of the charging port cover is the open state, the process proceeds to step S611B.

In step S611B, the process ends.

In step S64B, if the vehicle speed is greater than the threshold value, go to step S65B;

and step S65B, controlling the electric vehicle to display the reminding information.

The process has the advantages that whether the detection device is normal or not is judged firstly to prevent the open-close state of the charging opening cover from being judged by mistake; if the detection device is abnormal, but if the vehicle speed is greater than the threshold value, the normal running of the vehicle is not influenced, the instrument is required to remind, and if the vehicle speed is less than the threshold value, the electric vehicle is controlled to be in a non-high-voltage state, so that personnel have no electric shock risk. If the contactor is sintered or the electric leakage exists between the battery pack and the load, the vehicle speed judgment process is carried out; if no leakage or sintering exists, the open-close state of the charging port cover is judged, the charging port cover is closed, the personnel have no electric shock risk, the charging port cover is opened, and the vehicle speed is judged.

As shown in fig. 25, on the basis of the seventh preferred embodiment of the present disclosure, the electric vehicle high voltage safety control method of the eighth preferred embodiment of the present disclosure further includes the steps of:

step S71, acquiring fourth information representing whether the charging port is connected with a charging gun or not; wherein, the fourth information that whether the sign mouth that charges is connected with the rifle that charges can be obtained through the present components and parts on the car.

Step S72, determining whether the charging port is connected with the charging gun according to the fourth information; when the rifle that charges is connected to the mouth that charges, then personnel can not touch the high-pressure metal department of the flap that charges, also can not be based on prevent that the finger touches safe reason control electric motor car and be in non-high-pressure state, because will satisfy the possible demand of charging of electric motor car.

Step S73, when the detection device is normal, the charging port cover is open, the vehicle speed is not greater than the threshold value, the electric vehicle has no electric leakage and no sintering, and the charging port is connected with the charging gun, the electric vehicle is controlled to be in a state capable of responding to the charging process;

in the step S63, the step of controlling the electric vehicle to be in the non-high voltage state when the detection device is normal, the charging port cover state is the open state, the vehicle speed is not greater than the threshold value, the electric vehicle does not have electric leakage, and sintering does not exist includes: when the detection device is normal, the charging port cover is in an open state, the vehicle speed is not greater than a threshold value, the electric vehicle does not have electric leakage and sintering, and the charging port is not connected with the charging gun, the electric vehicle is controlled to be in a non-high-voltage state.

In this embodiment, the obtaining of the first information, the obtaining of the second information, the obtaining of the third information, the obtaining of the fourth information, and the obtaining of the fifth information are not sequential, and may be performed sequentially, or may be performed sequentially. It is of course understood that it is preferable to first obtain the third information and then obtain the second information.

In this embodiment, the determination of the vehicle speed and the threshold value, the determination of whether the detection device is normal, the determination of whether the charging port is connected with the charging gun, and the determination of the electric vehicle having electric leakage or/and sintering are not sequential, and may be performed simultaneously or sequentially by determining the magnitude of the vehicle speed and the threshold value, determining whether the detection device is normal, determining whether the charging port is connected with the charging gun, and determining the electric vehicle having electric leakage or/and sintering. It is understood that it is preferable to determine whether the detection device is normal, and then determine whether the charging port cover is in the open state or the closed state.

Specifically, as shown in fig. 26, the method for controlling high voltage safety of an electric vehicle according to an embodiment of the present disclosure includes the following steps:

step S71A, acquiring first information representing the vehicle speed;

step S72A, determining whether the vehicle speed is greater than a threshold value according to the first information; if the vehicle speed is not greater than the threshold value, the process proceeds to step S77A.

Step S77A, acquiring third information representing whether the detection device is normal or not;

step S78A, determining whether the detection device is normal according to the third information; if the detection device is abnormal, go to step S79A; if the detection device is normal, the process goes to step S710A.

And step S79A, controlling the electric vehicle to be in a non-high-pressure state.

Step S710A, acquiring fifth information indicating whether the contactor is sintered and whether there is electrical leakage between the battery pack and the load;

step 711A, determining whether the electric vehicle has electric leakage and contactor sintering according to the fifth information; if the electric vehicle has electric leakage or/and sintering, jumping to step S79A; if the electric vehicle does not have leakage and is not sintered, the process proceeds to step S712A.

Step S712A, acquiring second information representing the state of the charge flap;

step S713A, determining the state of the charge flap to be an open state or a closed state according to the second information; if the open/close state of the charging port cover is the closed state, the process goes to step S76A; if the open/close state of the charging port cover is the open state, the process proceeds to step S714A.

In step S76A, the process ends.

Step S714A, acquiring fourth information representing whether the charging port is connected with the charging gun or not;

step S715A, determining whether the charging port is connected with the charging gun according to the fourth information; if the charging port is connected to the charging gun, go to step S716A; if the charging port is not connected with the charging gun, the step goes to step S79A;

in step S716A, the electric vehicle is controlled to be in a state responsive to the charging process.

In step S72A, if the vehicle speed is greater than the threshold value, go to step S73A;

step S73A, acquiring fifth information representing whether the contactor is sintered and whether electric leakage exists between the battery pack and the load;

step S74A, determining whether the electric vehicle has electric leakage and contactor sintering according to the fifth information; if the electric vehicle has electric leakage or/and sintering, jumping to step S75A; if the electric vehicle does not have leakage and is not sintered, the process proceeds to step S76A.

And step S75A, controlling the electric vehicle to display the reminding information.

The process has the advantages that firstly, whether the vehicle speed is greater than a threshold value or not is judged, and if the vehicle speed is greater than the threshold value, electric leakage or sintering judgment is carried out, so that driving is not influenced, and personnel electric shock risks are not allowed to occur; the electric vehicle charging method comprises the steps of judging whether a detection device is normal or not when the vehicle speed is smaller than a threshold value, controlling the electric vehicle to be in a non-high-voltage state if the detection device is abnormal, judging whether the electric vehicle has electric leakage or not and whether a contactor is sintered or not if the detection device is normal, judging the opening state of a charging port cover, and finally judging whether the charging port is connected with a charging gun or not, so that the electric vehicle is controlled to be in a state capable of responding to a charging process, and the use of the vehicle and the charging.

Specifically, as shown in fig. 27, the electric vehicle high-voltage safety control method according to an embodiment of the present disclosure includes the following steps:

step S71B, acquiring third information representing whether the detection device is normal or not;

step S72B, determining whether the detection device is normal according to the third information; if the detection device is abnormal, go to step S73B; if the detection device is normal, the process goes to step S77B.

Step S73B, acquiring first information representing the vehicle speed;

step S74B, determining whether the vehicle speed is greater than a threshold value according to the first information; if the vehicle speed is greater than the threshold value, jumping to step S75B; if the vehicle speed is not greater than the threshold value, the process proceeds to step S76B.

And step S75B, controlling the electric vehicle to display the reminding information.

And step S76B, controlling the electric vehicle to be in a non-high-pressure state.

Step S77B, acquiring fifth information representing whether the contactor is sintered and whether electric leakage exists between the battery pack and the load;

step S78B, determining whether the electric vehicle has electric leakage and contactor sintering according to the fifth information; if the electric vehicle has electric leakage or/and sintering, jumping to step S73B; if the electric vehicle does not have electric leakage and is not sintered, the process proceeds to step S79B.

Step S79B, acquiring second information representing the state of the charging port cover;

step S710B, determining the state of the charge flap as an open state or a closed state according to the second information; if the open/close state of the charging port cover is the closed state, the process goes to step S711B; if the open/close state of the charging port cover is the open state, the process proceeds to step S712B.

In step S711B, the process ends.

Step S712B, acquiring first information representing a vehicle speed;

step S713B, determining whether the vehicle speed is greater than a threshold value based on the first information; if the vehicle speed is greater than the threshold value, jumping to step S75B; if the vehicle speed is not greater than the threshold value, the process proceeds to step S714B.

Step S714B, acquiring fourth information representing whether the charging port is connected with the charging gun or not;

step S715B, determining whether the charging port is connected with the charging gun according to the fourth information; if the charging port is connected to the charging gun, go to step S716B; if the charging port is not connected to the charging gun, go to step S76B;

and step S716B, controlling the high-voltage distribution system of the electric vehicle to be in a state capable of responding to the charging process.

The process has the advantages that whether the detection device is normal or not is judged firstly, and misjudgment of the opening and closing state of the charging port is prevented; when the detection device is abnormal, the speed of the vehicle also needs to be judged, and the normal running of the whole vehicle cannot be influenced; the detection device is normal, and whether the contactor is sintered or not and whether electric leakage exists between the battery pack and the load or not need to be judged; if the electric leakage exists, the speed of the vehicle also needs to be judged, and the normal running of the whole vehicle cannot be influenced; if do not have the electric leakage, judge the mouth open-close state that charges, the flap that charges closes, personnel's no electric shock risk, the flap that charges opens, need judge the speed of a motor vehicle and whether the flap that charges connects the rifle that charges, can not influence and normally travel and charge.

On the basis of the first preferred embodiment of the present disclosure, the electric vehicle high voltage safety control method of the ninth preferred embodiment of the present disclosure further includes the steps of:

step S81, acquiring fifth information representing whether electric leakage exists between the battery pack and the load;

step S82, determining whether the electric vehicle has electric leakage according to the fifth information;

step S83, when the speed is not more than the threshold value and the electric vehicle has electric leakage, controlling the electric vehicle to be in a non-high voltage state;

the step S03 specifically includes: when the speed is not greater than the threshold value, the electric vehicle high-voltage distribution system does not have electric leakage, and the charging port cover state is an open state, the electric vehicle is controlled to be in a non-high-voltage state.

The electric vehicle high-voltage safety control method of this embodiment is different from the electric vehicle high-voltage safety control method of the sixth preferred embodiment of this disclosure in that the electric vehicle high-voltage safety control method of this embodiment may be based on that no fourth contactor is disposed on the cable between the negative electrode of the charging port and the negative electrode bus, and no fifth contactor is disposed on the cable between the positive electrode of the charging port and the positive electrode bus, as specifically shown in fig. 4. This eliminates the need to detect whether the contactor is sintered.

For brevity of the description, other specific contents may refer to the sixth embodiment of the present disclosure, and when understanding the ninth embodiment of the present disclosure, only the obtaining and the determining whether the contactor of the sixth embodiment of the present disclosure is sintered or not need to be removed, and specifically refer to fig. 19, fig. 20, and fig. 21, which are not described again here.

On the basis of the ninth preferred embodiment of the present disclosure, the electric vehicle high voltage safety control method of the tenth preferred embodiment of the present disclosure further includes the steps of:

step S91, acquiring third information representing whether the detection device is normal or not, wherein the detection device is used for detecting whether the detection device breaks down or not and detecting whether the state of the charging port cover is in an open state or a closed state; the third information representing whether the detection device is normal or not can be detected by the detection device itself. Whether detection device detects oneself normally can prevent to appear misjudgement to the judgement that the flap state of charging is open state or closed state.

Step S92, determining whether the detection device is normal according to the third information; when the detection device is abnormal, the state of the charging port cover detected by the detection device is in an open state or a closed state, and thus no signal can be received. When the detection device is normal, the charging port cover state detected by the detection device is an open state or a closed state, and then a message can be collected.

Step S93, when the detection device is abnormal and the vehicle speed is not greater than the threshold value, controlling the electric vehicle to be in a non-high-pressure state; when the detection device is abnormal, the state of the charging port cover cannot be known to be an open state or a closed state, the state of the charging port cover is the open state or the closed state, and the charging port cover may be in the open state, so that safety risk exists; the charging port cover state is an open state or a closed state, and the charging port cover state can also be a closed state, so that no safety risk exists. In order to prevent the occurrence of contact finger safety accidents and the like, when the detection device is abnormal and the speed of the electric vehicle is not greater than a threshold value, the electric vehicle is controlled to be in a non-high-voltage state.

The step S83 specifically includes: when the detection device is normal, the speed is not greater than the threshold value and the electric vehicle has electric leakage, controlling the electric vehicle to be in a non-high-voltage state; and when the detection device is normal, the charging opening cover is in an open state, the vehicle speed is not greater than the threshold value, and the electric vehicle does not have electric leakage, controlling the electric vehicle to be in a non-high-voltage state.

The electric vehicle high-voltage safety control method of this embodiment is different from the electric vehicle high-voltage safety control method of the seventh preferred embodiment of the present disclosure in that the electric vehicle high-voltage safety control method of this embodiment may be based on that no fourth contactor is disposed on the cable between the negative electrode of the charging port and the negative electrode bus, and no fifth contactor is disposed on the cable between the positive electrode of the charging port and the positive electrode bus, as specifically shown in fig. 4. This eliminates the need to detect whether the contactor is sintered.

For brevity of the description, other specific contents may refer to the seventh embodiment of the present disclosure, and when understanding the tenth embodiment of the present disclosure, only the obtaining and the determining whether the contactor of the seventh embodiment of the present disclosure is sintered or not need to be removed, and specifically refer to fig. 22, 23, and 24, which are not described herein again.

On the basis of the tenth preferred embodiment of the present disclosure, the electric vehicle high voltage safety control method of the eleventh preferred embodiment of the present disclosure further includes the steps of:

step S101, acquiring fourth information representing whether a charging gun is connected to a charging port; wherein, the fourth information that whether the sign mouth that charges is connected with the rifle that charges can be obtained through the present components and parts on the car.

Step S102, determining whether the charging port is connected with the charging gun or not according to the fourth information; when the rifle that charges is connected to the mouth that charges, then personnel can not touch the high-pressure metal department of the flap that charges, also can not be based on prevent that the finger touches safe reason control electric motor car and be in non-high-pressure state, because will satisfy the possible demand of charging of electric motor car.

Step S103, when the detection device is normal, the charging port cover is in an open state, the vehicle speed is not greater than a threshold value, the electric vehicle does not have electric leakage, and the charging port is connected with a charging gun, controlling the electric vehicle to be in a state capable of responding to a charging process;

in the step S93, the step of controlling the electric vehicle to be in the non-high voltage state when the detection device is normal, the charging port cover state is the open state, the vehicle speed is not greater than the threshold value, and the electric vehicle does not have electric leakage includes: when the detection device is normal, the charging opening cover is in an open state, the vehicle speed is not greater than a threshold value, the electric vehicle does not have electric leakage, and the charging opening is not connected with the charging gun, the electric vehicle is controlled to be in a non-high-voltage state.

The electric vehicle high-voltage safety control method of this embodiment is different from the electric vehicle high-voltage safety control method of the eighth preferred embodiment of the present disclosure in that the electric vehicle high-voltage safety control method of this embodiment may be based on that no fourth contactor is disposed on the cable between the negative electrode of the charging port and the negative electrode bus, and no fifth contactor is disposed on the cable between the positive electrode of the charging port and the positive electrode bus, as specifically shown in fig. 4. This eliminates the need to detect whether the contactor is sintered.

For brevity of the description, other specific contents may be referred to the eighth embodiment of the present disclosure, and when understanding the eleventh embodiment of the present disclosure, only the obtaining and determining whether the contactor of the eighth embodiment of the present disclosure is sintered or not need to be removed, and specifically refer to fig. 25, fig. 26, and fig. 27, which are not described herein again.

As shown in fig. 28, on the basis of the first preferred embodiment of the present disclosure, the electric vehicle high voltage safety control method according to the twelfth preferred embodiment of the present disclosure further includes the following steps:

step S111, acquiring fifth information representing whether the contactor is sintered and whether electric leakage exists between the battery pack and the load; the contactor comprises a fourth contactor arranged on a cable between the negative pole of the charging port and the negative pole bus, and the fourth contactor is shown in FIG. 2; or the contactor comprises a fifth contactor arranged on the cable between the positive pole of the charging port and the positive pole bus, as shown in fig. 3; alternatively, the contactors include a fourth contactor disposed on the cable between the charging port cathode and the cathode bus bar and a fifth contactor disposed on the cable between the charging port anode and the anode bus bar, as shown in fig. 1. Contactor sintering means that the contactor is always in a conducting state, cannot be normally switched to a disconnecting state, and can be detected through a sintering detection device.

Step S112, determining whether the electric vehicle has electric leakage and contactor sintering according to the fifth information;

and S113, controlling the electric vehicle to be in a non-high-voltage state when the vehicle speed is not greater than the threshold value, the charging port cover state is a closed state, and the electric vehicle has electric leakage or/and sintering.

In this embodiment, the judgment of the vehicle speed and the threshold value, the judgment of whether the charging port cover state is in the open state or the closed state, and the judgment of whether the electric vehicle has electric leakage or/and sintering are not sequential, and may be performed sequentially, or simultaneously, the judgment of the vehicle speed and the threshold value, the judgment of whether the charging port cover state is in the open state or the closed state, and the judgment of whether the electric vehicle has electric leakage or/and sintering are performed sequentially.

Specifically, as shown in fig. 29, the electric vehicle high-voltage safety control method according to an embodiment of the present disclosure includes the following steps:

step S111A, acquiring first information representing vehicle speed;

step S112A, determining whether the vehicle speed is greater than a threshold value according to the first information; if the vehicle speed is not greater than the threshold value, the process proceeds to step S113A.

Step S113A, acquiring second information representing the state of the charging port cover;

step S114A, determining the state of the charge flap to be in an open state or a closed state according to the second information; if the open/close state of the charging port cover is the closed state, the process goes to step S115A; if the open/close state of the charging port cover is the open state, the process proceeds to step S117A.

Step 115A, acquiring fifth information representing whether the contactor is sintered and whether electric leakage exists between the battery pack and the load;

step S116A, determining whether the electric vehicle has electric leakage and contactor sintering according to the fifth information; if the electric vehicle has electric leakage or/and sintering, jumping to step S117A; if the electric vehicle does not have leakage and is not sintered, the process proceeds to step S118A.

And step S117A, controlling the electric vehicle to be in a non-high-pressure state.

In step S118A, the process ends.

In step S112A, if the vehicle speed is greater than the threshold value, the process proceeds to step S119A.

Step S119A, acquiring fifth information representing whether the contactor is sintered and whether electric leakage exists between the battery pack and the load;

step S1110A, determining whether there is leakage current and contactor sintering in the electric vehicle according to the fifth information; if the electric vehicle has electric leakage or/and sintering, jumping to step S1111A; if the electric vehicle does not have leakage and is not sintered, the process proceeds to step S118A.

And step S1111A, controlling the electric vehicle to display the reminding information.

The process has the advantages that whether the vehicle speed is greater than a threshold value or not is judged, and when the vehicle speed is greater than the threshold value, contactor sintering and whether electric leakage exists between the battery pack and the load or not need to be judged; the speed of a vehicle is less than the threshold value, the open-close state of the charging port cover is judged, when the charging port cover is opened, the electric vehicle is controlled to be in a non-high-voltage state, the charging port cover is closed, and whether the contactor is sintered and whether electric leakage exists between the battery pack and the load or not needs to be judged.

Specifically, as shown in fig. 30, the electric vehicle high-voltage safety control method according to an embodiment of the present disclosure includes the following steps:

step S111B, acquiring second information representing the state of the charging port cover;

step S112B, determining the state of the charge flap to be in an open state or a closed state according to the second information; if the open/close state of the charging port cover is the closed state, the process goes to step S113B; if the open/close state of the charging port cover is the open state, the process proceeds to step S115B.

Step S113B, acquiring fifth information indicating whether the contactor is sintered and whether there is electrical leakage between the battery pack and the load;

step S114B, determining whether the electric vehicle has electric leakage and contactor sintering according to the fifth information; if the electric vehicle has electric leakage or/and sintering, jumping to step S115B; if the electric vehicle does not have leakage and is not sintered, the process proceeds to step S119B.

Step S115B, acquiring first information representing vehicle speed;

step S116B, determining whether the vehicle speed is greater than a threshold value according to the first information; if the vehicle speed is greater than the threshold value, jumping to step S117B; if the vehicle speed is not greater than the threshold value, the process proceeds to step S118B.

And step S117B, controlling the electric vehicle to display the reminding information.

And step S118B, controlling the electric vehicle to be in a non-high-pressure state.

In step S119B, the process ends.

The process has the advantages that the opening and closing state of the charging opening cover is judged firstly, and when the charging opening cover is opened, the vehicle speed information needs to be judged, so that the normal running is not influenced, and the electric shock of personnel is prevented; the charging port cover is in a closed state, whether the contactor is sintered or not and whether electric leakage exists between the battery pack and the load or not are judged, if the electric leakage exists, the vehicle speed needs to be judged, normal driving is not influenced, and people are prevented from getting an electric shock.

As shown in fig. 31, on the basis of the twelfth preferred embodiment of the present disclosure, the electric vehicle high voltage safety control method of the thirteenth preferred embodiment of the present disclosure further includes the steps of:

step S121, acquiring third information representing whether the detection device is normal or not, wherein the detection device is used for detecting whether the detection device breaks down or not and detecting whether the state of the charging port cover is in an open state or a closed state; the third information representing whether the detection device is normal or not can be detected by the detection device itself. Whether detection device detects oneself normally can prevent to appear misjudgement to the judgement that the flap state of charging is open state or closed state.

Step S122, determining whether the detection device is normal according to the third information; when the detection device is abnormal, the state of the charging port cover detected by the detection device is in an open state or a closed state, and thus no signal can be received. When the detection device is normal, the charging port cover state detected by the detection device is an open state or a closed state, and then a message can be collected.

Step S123, when the detection device is abnormal and the vehicle speed is not greater than the threshold value, controlling the electric vehicle to be in a non-high-pressure state; when the detection device is abnormal, the state of the charging port cover cannot be known to be an open state or a closed state, the state of the charging port cover is the open state or the closed state, and the charging port cover may be in the open state, so that safety risk exists; the charging port cover state is an open state or a closed state, and the charging port cover state can also be a closed state, so that no safety risk exists. In order to prevent the occurrence of contact finger safety accidents and the like, when the detection device is abnormal and the speed of the electric vehicle is not greater than a threshold value, the electric vehicle is controlled to be in a non-high-voltage state.

The step S03 specifically includes: when the detection device is normal, the charging opening cover is in an open state, and the vehicle speed is not greater than a threshold value, controlling the electric vehicle to be in a non-high-voltage state;

the step S113 specifically includes: and when the detection device is normal, the charging port cover is in a closed state, the vehicle speed is not greater than a threshold value, and the electric vehicle has electric leakage or/and sintering, controlling the electric vehicle to be in a non-high-voltage state.

In this embodiment, the obtaining of the first information, the obtaining of the second information, the obtaining of the third information, and the obtaining of the fifth information are not in sequence, and may be simultaneously, or may be in sequence, and the obtaining of the first information, the obtaining of the second information, the obtaining of the third information, and the obtaining of the fifth information are arranged.

In this embodiment, the determination of the vehicle speed and the threshold value, the determination of whether the detection device is normal and the determination of the electric vehicle having electric leakage or/and sintering are not sequential, and may be performed simultaneously or sequentially by determining the magnitude of the vehicle speed and the threshold value, the determination of whether the detection device is normal and the determination of the electric vehicle having electric leakage or/and sintering. It is understood that it is preferable to determine whether the detection device is normal, and then determine whether the charging port cover is in the open state or the closed state.

Specifically, as shown in fig. 32, the electric vehicle high-voltage safety control method according to an embodiment of the present disclosure includes the following steps:

step S121A, acquiring first information representing the vehicle speed;

step S122A, determining whether the vehicle speed is greater than a threshold value according to the first information; if the vehicle speed is not greater than the threshold value, the process proceeds to step S123A.

Step S123A, acquiring third information representing whether the detection device is normal or not;

step S124A, determining whether the detection device is normal according to the third information; if the detection device is abnormal, go to step S125A; if the detection device is normal, the process goes to step S126A.

And step S125A, controlling the electric vehicle to be in a non-high-pressure state.

Step S126A, acquiring second information representing the state of the charging port cover;

step S127A, determining the state of the charging opening cover to be an opening state or a closing state according to the second information; if the open/close state of the charging port cover is the closed state, the process goes to step S128A; if the open/close state of the charging port cover is the open state, the process proceeds to step S125A.

Step S128A, acquiring fifth information indicating whether the contactor is sintered and whether there is electrical leakage between the battery pack and the load;

step S129A, determining whether the electric vehicle has electric leakage and contactor sintering according to the fifth information; if the electric vehicle has electric leakage or/and sintering, jumping to step S125A; if the electric vehicle does not have electric leakage and sintering, the process goes to step S1210A.

In step S1210A, the process ends.

In step S122A, if the vehicle speed is greater than the threshold value, the process proceeds to step S1211A.

Step S1211A, acquiring fifth information indicating whether the contactor is sintered and whether there is leakage between the battery pack and the load;

step S1212A, determining whether there is leakage current and contactor sintering in the electric vehicle according to the fifth information; if the electric vehicle has electric leakage or/and sintering, jumping to step S1213A; if the electric vehicle does not have electric leakage and sintering, the process goes to step S1210A.

And step S1213A, controlling the electric vehicle to display the reminding information.

The process has the advantages that firstly, the vehicle speed information is judged, the vehicle speed is greater than a threshold value, whether the contactor is sintered or not and whether electric leakage exists between the battery pack and the load or not are judged, the running cannot be influenced due to the existence of a fault, and the alarm prompt is given; when the vehicle speed is less than the threshold value, whether the detection device is normal or not needs to be judged, and the open-close state of the charging opening cover is prevented from being misjudged; detecting the abnormality of the device, and controlling the electric vehicle to be in a non-high-voltage state; the detection device is normal, and the open-close state of the charging opening cover is judged, and the charging opening cover is opened, so that whether electric leakage or contact sintering exists or not needs to be judged.

Specifically, as shown in fig. 33, the electric vehicle high-voltage safety control method according to an embodiment of the present disclosure includes the following steps:

step S121B, acquiring third information representing whether the detection device is normal or not;

step S122B, determining whether the detection device is normal according to the third information; if the detection device is abnormal, go to step S123B; if the detection device is normal, the process goes to step S127B.

Step S123B, acquiring first information representing vehicle speed;

step S124B, determining whether the vehicle speed is greater than a threshold value according to the first information; if the vehicle speed is greater than the threshold value, jumping to step S125B; if the vehicle speed is not greater than the threshold value, the process proceeds to step S126B.

And step S125B, controlling the electric vehicle to display the reminding information.

And step S126B, controlling the electric vehicle to be in a non-high-voltage state.

Step S127B, acquiring second information representing the state of the charging port cover;

step S128B, determining the state of the charging opening cover to be an opening state or a closing state according to the second information; if the open/close state of the charging port cover is the closed state, the process goes to step S129B; if the open/close state of the charging port cover is the open state, the process proceeds to step S123B.

Step S129B, acquiring fifth information indicating whether the contactor is sintered and whether there is electrical leakage between the battery pack and the load;

step S1210B, determining whether the electric vehicle has electric leakage and contactor sintering according to the fifth information; if the electric vehicle has electric leakage or/and sintering, jumping to step S123B; if the electric vehicle does not have leakage current and sintering, the process goes to step S1211B.

In step S1211B, the process ends.

The process has the advantages that whether the detection device is normal or not is judged firstly, misjudgment of the opening and closing state of the charging port cover is prevented, if the detection device is abnormal, whether the vehicle speed is abnormal or not needs to be judged, namely, normal running of the vehicle cannot be influenced when the vehicle speed is greater than a threshold value; the detection device is normal, the opening and closing state of the charging opening cover needs to be detected, the charging opening cover is opened, and the process flow is carried out to the vehicle speed judgment; when the charging port cover is closed, whether the contact is sintered or not and whether electric leakage exists between the battery pack and the load or not need to be judged, and if the electric leakage or the sintering does not exist, the personnel do not have electric shock risks; and if the leakage or sintering exists, the process is carried out to judge the vehicle speed.

As shown in fig. 34, on the basis of the thirteenth preferred embodiment of the present disclosure, the electric vehicle high voltage safety control method of the fourteenth preferred embodiment of the present disclosure further includes the steps of:

step S141, acquiring fourth information representing whether the charging port is connected with a charging gun or not; wherein, the fourth information that whether the sign mouth that charges is connected with the rifle that charges can be obtained through the present components and parts on the car.

Step S142, determining whether the charging port is connected with the charging gun according to the fourth information; when the rifle that charges is connected to the mouth that charges, then personnel can not touch the high-pressure metal department of the flap that charges, also can not be based on prevent that the finger touches safe reason control electric motor car and be in non-high-pressure state, because will satisfy the possible demand of charging of electric motor car.

Step S143, when the detection device is normal, the charging port cover is in an open state, the vehicle speed is not greater than a threshold value, the electric vehicle has no electric leakage and no sintering, and the charging port is not connected with a charging gun, controlling the electric vehicle to be in a non-high voltage state;

when the detection device is normal, the charging port cover is in an open state, the vehicle speed is not greater than a threshold value, the electric vehicle does not have electric leakage and sintering, and the charging port is connected with the charging gun, the electric vehicle is controlled to be in a state capable of responding to a charging process;

in the step S123, "when the detection device is normal, the charging port cover is in the open state, and the vehicle speed is not greater than the threshold, controlling the electric vehicle to be in the non-high voltage state" specifically includes: and when the detection device is normal, the charging port cover is in an open state, the vehicle speed is not greater than a threshold value, and the electric vehicle has electric leakage or/and sintering, controlling the electric vehicle to be in a non-high-voltage state.

In this embodiment, the obtaining of the first information, the obtaining of the second information, the obtaining of the third information, the obtaining of the fourth information, and the obtaining of the fifth information are not sequential, and may be performed sequentially, or may be performed sequentially.

In this embodiment, the determination of the vehicle speed and the threshold value, the determination of whether the detection device is normal, the determination of whether the charging port is connected to the charging gun, and the determination of the electric vehicle having electric leakage or/and sintering are not sequential, and may be performed simultaneously or sequentially by determining the magnitude of the vehicle speed and the threshold value, determining whether the detection device is normal, determining whether the charging port is connected to the charging gun, and determining the electric vehicle having electric leakage or/and sintering. It is understood that it is preferable to determine whether the detection device is normal, and then determine whether the charging port cover is in the open state or the closed state.

Specifically, as shown in fig. 35, the electric vehicle high-voltage safety control method according to an embodiment of the present disclosure includes the following steps:

step S131A, acquiring first information representing vehicle speed;

step S132A, determining whether the vehicle speed is greater than a threshold value according to the first information; if the vehicle speed is greater than the threshold value, jumping to step S1316A; if the vehicle speed is not greater than the threshold value, the process proceeds to step S133A.

Step S133A, taking third information indicating whether the detection device is normal;

step S134A, determining whether the detection device is normal according to the third information; if the detection device is abnormal, go to step S135A; if the detection device is normal, the process goes to step S136A.

And step S135A, controlling the electric vehicle to be in a non-high-pressure state.

Step S136A, acquiring second information representing the state of the charging port cover;

step S137A, determining that the charge flap state is an open state or a closed state according to the second information; if the open/close state of the charging port cover is the closed state, the process goes to step S138A; if the open/close state of the charging port cover is the open state, the process proceeds to step S1311A.

Step S138A, acquiring fifth information indicating whether the contactor is sintered and whether there is electrical leakage between the battery pack and the load;

step S139A, determining whether the electric vehicle has electric leakage and contactor sintering according to the fifth information; if the electric vehicle has electric leakage or/and sintering, jumping to step S135A; if the electric vehicle does not have leakage and sintering, the process goes to step S1310A.

In step S1310A, the process ends.

Step 1311A, acquiring fifth information representing whether the contactor is sintered and whether electric leakage exists between the battery pack and the load;

step 1312A, determining whether the electric vehicle has electric leakage and contactor sintering according to the fifth information; if the electric vehicle has electric leakage or/and sintering, jumping to step S135A; if the electric vehicle does not have electric leakage and sintering, the process goes to step S1313A.

Step 1313A, acquiring fourth information representing whether the charging port is connected with a charging gun;

step S1314A, determining whether the charging port is connected to the charging gun according to the fourth information; if the charging port is connected with the charging gun, jumping to step S1315A; if the charging port is not connected to the charging gun, go to step S135A;

and step 1315A, controlling the electric vehicle to be in a state capable of responding to the charging process.

Step S1316A, acquiring fifth information representing whether the contactor is sintered and whether electric leakage exists between the battery pack and the load;

step 1317A, determining whether the electric vehicle has electric leakage and contactor sintering according to the fifth information; if the electric vehicle has electric leakage or/and sintering, jumping to step S1318A; if the electric vehicle does not have leakage and sintering, the process goes to step S1310A.

And step S1318A, controlling the electric vehicle to display the reminding information.

The process has the advantages that whether the vehicle speed is greater than a threshold value or not is judged, when the vehicle speed is greater than the threshold value, whether the contactor is sintered or not and whether electric leakage exists between the battery pack and the load or not are judged, the electric leakage or the sintering exists, the vehicle can run, and the reminding is carried out by an instrument; when the speed of the vehicle is less than the threshold value, judging whether the detection device is normal or not, if the detection device is abnormal, controlling the electric vehicle to be in a non-high voltage state, and preventing people from getting an electric shock; the detection device is normal, the open-close state of the charging opening cover is judged, the charging opening cover is closed, and the judgment flow of electric leakage or sintering is entered; when the charging port cover is opened, whether electric leakage or contact sintering exists needs to be judged, namely before charging, the electric leakage or sintering occurs, and the state that the charging process can be responded is not entered; if no leakage or sintering exists, whether the charging port is connected with the charging gun or not is judged, and the electric vehicle can be controlled to be in a state capable of responding to the charging process.

As shown in fig. 36, on the basis of the thirteenth preferred embodiment of the present disclosure, the electric vehicle high voltage safety control method of the fifteenth preferred embodiment of the present disclosure further includes the steps of:

step S131, acquiring fourth information representing whether the charging port is connected with a charging gun or not; wherein, the fourth information that whether the sign mouth that charges is connected with the rifle that charges can be obtained through the present components and parts on the car.

Step S132, determining whether the charging port is connected with the charging gun according to the fourth information; when the rifle that charges is connected to the mouth that charges, then personnel can not touch the high-pressure metal department of the flap that charges, also can not be based on prevent that the finger touches safe reason control electric motor car and be in non-high-pressure state, because will satisfy the possible demand of charging of electric motor car.

Step S133, when the detection device is abnormal, the vehicle speed is not greater than the threshold value and the charging port is connected with the charging gun, controlling the electric vehicle to be in a state capable of responding to the charging process;

the step S133 specifically includes: when the detection device is abnormal, the vehicle speed is not greater than the threshold value and the charging port is not connected with the charging gun, controlling the electric vehicle to be in a non-high-voltage state;

and when the detection device is normal, the charging port cover is in an open state, the vehicle speed is not greater than the threshold value, and the charging port is not connected with the charging gun, controlling the electric vehicle to be in a non-high-voltage state.

Specifically, as shown in fig. 37, the electric vehicle high-voltage safety control method according to an embodiment of the present disclosure includes the following steps:

step S131B, taking third information indicating whether the detection device is normal;

step S132B, determining whether the detection device is normal according to the third information; if the detection device is abnormal, go to step S133B; if the detection device is normal, the process goes to step S1310B.

Step S133B, acquiring first information representing the vehicle speed;

step S134B, determining whether the vehicle speed is greater than a threshold value according to the first information; if the vehicle speed is greater than the threshold value, jumping to step S135B; if the vehicle speed is not greater than the threshold value, the process proceeds to step S136B.

And step S135B, controlling the electric vehicle to display the reminding information.

Step S136B, acquiring fourth information representing whether the charging port is connected with the charging gun or not;

step S137B, determining whether the charging port is connected with the charging gun according to the fourth information; if the charging port is connected to the charging gun, go to step S138B; if the charging port is not connected to the charging gun, go to step S139B;

and step S138B, controlling the electric vehicle to be in a state capable of responding to the charging process.

And step S139B, controlling the electric vehicle to be in a non-high-pressure state.

Step S1310B, acquiring second information representing the state of the charge flap;

step 1311B, determining that the charging port cover state is an open state or a closed state according to the second information; if the open/close state of the charging port cover is the closed state, go to step S1312B; if the open/close state of the charging port cover is the open state, the process proceeds to step S133B.

Step 1312B, acquiring fifth information representing whether the contactor is sintered and whether electric leakage exists between the battery pack and the load;

step 1313B, determining whether the electric vehicle has electric leakage and contactor sintering according to the fifth information; if the electric vehicle has electric leakage or/and sintering, jumping to step S1314B; if the electric vehicle does not have leakage and is not sintered, the process proceeds to step S1316B.

Step S1314B, acquiring first information representing a vehicle speed;

step 1315B, determining whether the vehicle speed is greater than a threshold value according to the first information; if the vehicle speed is greater than the threshold value, jumping to step S135B; if the vehicle speed is not greater than the threshold value, the process proceeds to step S139B.

In step S1316B, the process ends.

The process has the advantages that whether the detection device is normal or not is firstly determined to prevent the open-close state of the charging port cover from being misjudged; the detection device is normal, and the open-close state of the charging port is judged; the charging port cover is opened, the vehicle speed information is judged, if the vehicle speed is less than a threshold value, whether the charging port is connected with a charging gun needs to be judged, and normal charging cannot be influenced; when the detection device is abnormal, the process goes to the judgment of the vehicle speed, namely the driving or the charging cannot be influenced; closing the charging port cover, and judging whether the contact is sintered or not and whether electric leakage exists between the battery pack and the load or not; if leakage or sintering exists, the vehicle speed needs to be judged, namely, the driving cannot be influenced when the vehicle speed is greater than a threshold value, and an instrument needs to remind.

On the basis of the first preferred embodiment of the present disclosure, the electric vehicle high voltage safety control method of the sixteenth preferred embodiment of the present disclosure further includes the steps of:

step S151, acquiring fifth information representing whether electric leakage exists between the battery pack and the load;

step S152, determining whether the electric vehicle has electric leakage according to the fifth information;

and step S153, controlling the electric vehicle to be in a non-high-voltage state when the vehicle speed is not greater than the threshold value, the charging port cover state is in a closed state and the electric vehicle has electric leakage.

The electric vehicle high-voltage safety control method of the present embodiment is different from the electric vehicle high-voltage safety control method of the twelfth preferred embodiment of the present disclosure in that the electric vehicle high-voltage safety control method of the present embodiment may be based on that no fourth contactor is disposed on the cable between the negative electrode and the negative electrode bus of the charging port, and no fifth contactor is disposed on the cable between the positive electrode and the positive electrode bus of the charging port, as specifically shown in fig. 4. This eliminates the need to detect whether the contactor is sintered.

For brevity of the description, other specific contents may refer to the twelfth embodiment of the present disclosure, and when understanding the sixteenth embodiment of the present disclosure, only the obtaining and determining whether the contactor of the twelfth embodiment of the present disclosure is sintered or not need to be removed, and the like, and specifically refer to fig. 25, fig. 26, and fig. 27, which are not described herein again.

On the basis of the sixteenth preferred embodiment of the present disclosure, the electric vehicle high voltage safety control method of the seventeenth preferred embodiment of the present disclosure further comprises the following steps:

step S161, acquiring third information indicating whether the detection device is normal, wherein the detection device is configured to detect whether the detection device fails and detect whether the charging port cover state is an open state or a closed state; the third information representing whether the detection device is normal or not can be detected by the detection device itself. Whether detection device detects oneself normally can prevent to appear misjudgement to the judgement that the flap state of charging is open state or closed state.

Step S162, determining whether the detection device is normal according to the third information; when the detection device is abnormal, the state of the charging port cover detected by the detection device is in an open state or a closed state, and thus no signal can be received. When the detection device is normal, the charging port cover state detected by the detection device is an open state or a closed state, and then a message can be collected.

Step S163, when the detection device is abnormal and the vehicle speed is not greater than the threshold value, controlling the electric vehicle to be in a non-high-pressure state; when the detection device is abnormal, the state of the charging port cover cannot be known to be an open state or a closed state, the state of the charging port cover is the open state or the closed state, and the charging port cover may be in the open state, so that safety risk exists; the charging port cover state is an open state or a closed state, and the charging port cover state can also be a closed state, so that no safety risk exists. In order to prevent the occurrence of contact finger safety accidents and the like, when the detection device is abnormal and the speed of the electric vehicle is not greater than a threshold value, the electric vehicle is controlled to be in a non-high-voltage state.

the step S153 specifically includes: and when the detection device is normal, the charging port cover is in a closed state, the vehicle speed is not greater than a threshold value, and the electric vehicle has electric leakage, controlling the electric vehicle to be in a non-high-voltage state.

The electric vehicle high-voltage safety control method of the present embodiment is different from the electric vehicle high-voltage safety control method of the thirteenth preferred embodiment of the present disclosure in that the electric vehicle high-voltage safety control method of the present embodiment may be based on that no fourth contactor is disposed on the cable between the negative electrode and the negative electrode bus of the charging port and no fifth contactor is disposed on the cable between the positive electrode and the positive electrode bus of the charging port, as specifically shown in fig. 4. This eliminates the need to detect whether the contactor is sintered.

For brevity of description, other specific contents may refer to the thirteenth embodiment of the present disclosure, and when understanding the seventeenth embodiment of the present disclosure, only the obtaining and the determining whether the contactor of the thirteenth embodiment of the present disclosure is sintered or not need to be removed, and specifically refer to fig. 28, fig. 29, and fig. 30, and no further description is provided herein.

On the basis of the seventeenth preferred embodiment of the present disclosure, the electric vehicle high voltage safety control method of the eighteenth preferred embodiment of the present disclosure further includes the steps of:

step S171, acquiring fourth information representing whether the charging port is connected with the charging gun or not; wherein, the fourth information that whether the sign mouth that charges is connected with the rifle that charges can be obtained through the present components and parts on the car.

Step S172, determining whether the charging port is connected with the charging gun according to the fourth information; when the rifle that charges is connected to the mouth that charges, then personnel can not touch the high-pressure metal department of the flap that charges, also can not be based on prevent that the finger touches safe reason control electric motor car and be in non-high-pressure state, because will satisfy the possible demand of charging of electric motor car.

Step S173, controlling the electric vehicle to be in a non-high voltage state when the detection device is normal, the charging port cover state is an open state, the vehicle speed is not greater than a threshold value, the electric vehicle does not have electric leakage, and the charging port is not connected with a charging gun;

when the detection device is normal, the charging port cover is in an open state, the vehicle speed is not greater than a threshold value, the electric vehicle does not have electric leakage, and the charging port is connected with a charging gun, the electric vehicle is controlled to be in a state capable of responding to a charging process;

in the step S163, "when the detection device is normal, the charging port cover is in the open state, and the vehicle speed is not greater than the threshold, controlling the electric vehicle to be in the non-high voltage state" specifically includes: and when the detection device is normal, the charging port cover is in an open state, the vehicle speed is not greater than a threshold value, and the electric vehicle has electric leakage or/and sintering, controlling the electric vehicle to be in a non-high-voltage state.

The electric vehicle high-voltage safety control method of the present embodiment is different from the electric vehicle high-voltage safety control method of the fourteenth preferred embodiment of the present disclosure in that the electric vehicle high-voltage safety control method of the present embodiment may be based on that no fourth contactor is disposed on the cable between the negative electrode and the negative electrode bus of the charging port, and no fifth contactor is disposed on the cable between the positive electrode and the positive electrode bus of the charging port, as specifically shown in fig. 4. This eliminates the need to detect whether the contactor is sintered.

For brevity of the description, other specific contents may refer to the fourteenth embodiment of the disclosure, and when understanding the eighteenth embodiment of the disclosure, only the obtaining and the determining whether the contactor of the fourteenth embodiment of the disclosure is sintered or not need to be removed, and the like, specifically refer to fig. 31 and 32, and are not described herein again.

A nineteenth embodiment of the present disclosure provides an electric vehicle high voltage safety control device, including at least one memory; and at least one processor, where the at least one memory stores one or more instructions, and when the one or more instructions are executed by the at least one processor, the high-voltage safety control device of the electric vehicle may implement the method according to any of embodiments 1 to 18, which may specifically refer to any of embodiments 1 to 18, and will not be described herein again.

A twentieth embodiment of the present disclosure provides a vehicle including the electric vehicle high-voltage safety control device in the nineteenth embodiment described above, which will not be described herein again.

The preferred embodiments of the present disclosure are described in detail with reference to the accompanying drawings, however, the present disclosure is not limited to the specific details of the above embodiments, and various simple modifications may be made to the technical solution of the present disclosure within the technical idea of the present disclosure, and these simple modifications all belong to the protection scope of the present disclosure.

It should be noted that the various features described in the above embodiments may be combined in any suitable manner without departing from the scope of the invention. In order to avoid unnecessary repetition, various possible combinations will not be separately described in this disclosure.

In addition, any combination of various embodiments of the present disclosure may be made, and the same should be considered as the disclosure of the present disclosure, as long as it does not depart from the spirit of the present disclosure.

Claims

1. The high-voltage safety control method for the electric vehicle is characterized by comprising the following steps of:

2. The electric vehicle high voltage safety control method according to claim 1, further comprising the steps of:

acquiring third information representing whether a detection device is normal or not, wherein the detection device is used for detecting whether the detection device breaks down or not and detecting whether the charging port cover is in an open state or a closed state;

determining whether the detection device is normal according to the third information;

when the detection device is abnormal and the vehicle speed is not greater than the threshold value, controlling the electric vehicle to be in a non-high-pressure state;

when the vehicle speed is not greater than the threshold value and the charging port cover is in the open state, the step of controlling the electric vehicle to be in the non-high-voltage state specifically comprises the following steps:

and when the detection device is normal, the charging opening cover is in an open state, and the vehicle speed is not greater than the threshold value, controlling the electric vehicle to be in a non-high-voltage state.

3. The electric vehicle high voltage safety control method according to claim 2, further comprising the steps of:

acquiring fourth information representing whether the charging port is connected with a charging gun or not;

determining whether the charging port is connected with the charging gun according to the fourth information;

when the detection device is abnormal and the vehicle speed is not greater than the threshold value, the step of controlling the electric vehicle to be in a non-high-voltage state specifically comprises the following steps:

when the detection device is abnormal, the vehicle speed is not greater than the threshold value and the charging port is not connected with the charging gun, controlling the electric vehicle to be in a non-high-voltage state;

when the detection device is normal, the charging port cover is in an open state, and the vehicle speed is not greater than the threshold value, the step of controlling the electric vehicle to be in a non-high-voltage state specifically comprises the following steps:

when the detection device is normal, the charging port cover is in an open state, the vehicle speed is not greater than the threshold value, and the charging port is not connected with the charging gun, controlling the electric vehicle to be in a non-high-voltage state;

when the detection device is abnormal, the vehicle speed is not greater than the threshold value, and the charging port is connected with the charging gun, controlling the electric vehicle to be in a state capable of responding to a charging process;

and when the detection device is normal, the charging opening cover is in an open state, the vehicle speed is not greater than the threshold value, and the charging opening is connected with the charging gun, controlling the electric vehicle to be in a state capable of responding to a charging process.

4. The electric vehicle high voltage safety control method according to claim 1, further comprising the steps of:

when the vehicle speed is not greater than the threshold value, the charging port cover is in an open state, and the charging port is connected with the charging gun, controlling the electric vehicle to be in a state capable of responding to a charging process;

and when the vehicle speed is not greater than the threshold value, the charging port cover is in an open state, and the charging port is not connected with the charging gun, controlling the electric vehicle to be in a non-high-voltage state.

5. The electric vehicle high voltage safety control method according to claim 3, further comprising the steps of:

the step of controlling the electric vehicle to be in a state capable of responding to a charging process when the vehicle speed is not greater than the threshold, the charging port cover state is an open state, and the charging port is connected to the charging gun specifically includes:

when the detection device is normal, the charging opening cover is in an open state, the vehicle speed is not greater than the threshold value, and the charging opening is connected with the charging gun, controlling the electric vehicle to be in a state capable of responding to a charging process;

when the vehicle speed is not greater than the threshold value, the charging port cover is in an open state, and the charging port is not connected with the charging gun, the step of controlling the electric vehicle to be in a non-high-voltage state specifically comprises the following steps:

and when the detection device is normal, the charging opening cover is in an open state, the vehicle speed is not greater than the threshold value, and the charging opening is not connected with the charging gun, controlling the electric vehicle to be in a non-high-voltage state.

6. The electric vehicle high voltage safety control method according to claim 1, further comprising the steps of:

acquiring fifth information representing whether the contactor is sintered or not and whether electric leakage exists between the battery pack and the load or not; the contactor comprises a contactor arranged on a cable between a charging port anode and an anode bus bar, and/or the contactor comprises a contactor arranged on a cable between a charging port cathode and a cathode bus bar;

determining whether the electric vehicle has electric leakage or contactor sintering according to the fifth information;

when the vehicle speed is not greater than the threshold value and the electric vehicle has electric leakage or/and sintering, controlling the electric vehicle to be in a non-high-voltage state;

and when the vehicle speed is not greater than the threshold value, the electric vehicle has no electric leakage and no sintering, and the charging port cover is in an open state, controlling the electric vehicle to be in a non-high-voltage state.

7. The electric vehicle high voltage safety control method according to claim 6, further comprising the steps of:

when the vehicle speed is not greater than the threshold value and the electric vehicle has electric leakage and sintering, the specific step of controlling the electric vehicle to be in a non-high-voltage state comprises the following steps:

when the detection device is normal, the vehicle speed is not greater than the threshold value and the electric vehicle has electric leakage and sintering, controlling the electric vehicle to be in a non-high-voltage state;

when the vehicle speed is not greater than the threshold value, the electric vehicle has no leakage and no sintering, and the charging port cover is in an open state, the step of controlling the electric vehicle to be in a non-high-voltage state specifically comprises the following steps:

and when the detection device is normal, the charging port cover is in an open state, the vehicle speed is not greater than the threshold value, and the electric vehicle is not leaked and sintered, controlling the electric vehicle to be in a non-high-voltage state.

8. The electric vehicle high voltage safety control method according to claim 7,

when the detection device is normal, the charging port cover is in an open state, the vehicle speed is not greater than the threshold value, the electric vehicle has no electric leakage and no sintering, and the charging port is connected with the charging gun, the electric vehicle is controlled to be in a state capable of responding to a charging process;

when the detection device is normal, the charging port cover is in an open state, the vehicle speed is not greater than the threshold value, the electric vehicle does not have electric leakage and sintering, the specific steps of controlling the electric vehicle to be in a non-high-voltage state comprise:

and when the detection device is normal, the charging port cover is in an open state, the vehicle speed is not greater than the threshold value, the electric vehicle does not have electric leakage and sintering, and the charging port is not connected with the charging gun, controlling the electric vehicle to be in a non-high-voltage state.

9. The electric vehicle high voltage safety control method according to claim 1, further comprising the steps of:

acquiring fifth information representing whether electric leakage exists between the battery pack and the load;

determining whether the electric vehicle has electric leakage according to the fifth information;

when the speed is not greater than the threshold value and the electric vehicle has electric leakage, controlling the electric vehicle to be in a non-high-voltage state;

and when the vehicle speed is not greater than the threshold value, the electric vehicle has no electric leakage, and the charging port cover is in an open state, controlling the electric vehicle to be in a non-high-voltage state.

10. The electric vehicle high voltage safety control method according to claim 9, further comprising the steps of:

when the vehicle speed is not greater than the threshold value and the electric vehicle has electric leakage, the specific step of controlling the electric vehicle to be in a non-high-voltage state comprises the following steps:

when the detection device is normal, the speed is not greater than the threshold value and the electric vehicle has electric leakage, controlling the electric vehicle to be in a non-high-voltage state;

when the vehicle speed is not greater than the threshold value, the electric vehicle does not have electric leakage, and the charging port cover state is an open state, the step of controlling the electric vehicle to be in a non-high-voltage state specifically comprises the following steps:

and when the detection device is normal, the charging opening cover is in an open state, the vehicle speed is not greater than the threshold value, and the electric vehicle does not have electric leakage, controlling the electric vehicle to be in a non-high-voltage state.

11. The electric vehicle high voltage safety control method according to claim 10,

when the detection device is normal, the charging port cover is in an open state, the vehicle speed is not greater than the threshold value, the electric vehicle does not have electric leakage, and the charging port is connected with the charging gun, the electric vehicle is controlled to be in a state capable of responding to a charging process;

when the detection device is normal, the charging port cover is in an open state, the vehicle speed is not greater than the threshold value, and the electric vehicle does not have electric leakage, the specific steps of controlling the electric vehicle to be in a non-high-voltage state comprise:

and when the detection device is normal, the charging port cover is in an open state, the vehicle speed is not greater than the threshold value, the electric vehicle does not have electric leakage, and the charging port is not connected with the charging gun, controlling the electric vehicle to be in a non-high-voltage state.

12. The electric vehicle high voltage safety control method according to claim 1, further comprising the steps of:

determining whether the electric vehicle has electric leakage or sintering according to the fifth information;

and when the vehicle speed is not greater than the threshold value, the charging port cover is in a closed state, and the electric vehicle has electric leakage or/and sintering, controlling the electric vehicle to be in a non-high-voltage state.

13. The electric vehicle high voltage safety control method according to claim 12, further comprising the steps of:

when the detection device is normal, the charging port cover is in an open state, and the vehicle speed is not greater than the threshold value, controlling the electric vehicle to be in a non-high-voltage state;

when the vehicle speed is not greater than the threshold value, the charging port cover is in a closed state, and the electric vehicle has electric leakage or/and sintering, the step of controlling the electric vehicle to be in a non-high-voltage state specifically comprises the following steps:

and when the detection device is normal, the charging port cover is in a closed state, the vehicle speed is not greater than the threshold value, and the electric vehicle has electric leakage or/and sintering, controlling the electric vehicle to be in a non-high-voltage state.

14. The electric vehicle high voltage safety control method according to claim 13, further comprising the steps of:

when the detection device is normal, the charging port cover is in an open state, and the vehicle speed is not greater than the threshold value, the specific steps of controlling the electric vehicle to be in a non-high-voltage state comprise:

when the detection device is normal, the charging port cover is in an open state, the vehicle speed is not greater than the threshold value, and the electric vehicle has electric leakage or/and sintering, controlling the electric vehicle to be in a non-high-voltage state;

15. The electric vehicle high voltage safety control method according to claim 1, further comprising the steps of:

and when the vehicle speed is not greater than the threshold value, the charging port cover is in a closed state and the electric vehicle has electric leakage, controlling the electric vehicle to be in a non-high-voltage state.

16. The electric vehicle high voltage safety control method as claimed in claim 15, further comprising the steps of:

when the detection device is abnormal and the vehicle speed is not greater than the threshold value, the specific step of controlling the electric vehicle to be in a non-high-voltage state comprises the following steps:

and when the detection device is abnormal, the vehicle speed is not greater than the threshold value and the charging port is not connected with the charging gun, controlling the electric vehicle to be in a non-high-voltage state.

17. The electric vehicle high voltage safety control method as claimed in claim 16, further comprising the steps of:

when the detection device is normal, the charging port cover is in an open state, the vehicle speed is not greater than the threshold value, and the electric vehicle has electric leakage, controlling the electric vehicle to be in a non-high-voltage state;

when the detection device is normal, the charging port cover is in an open state, the vehicle speed is not greater than the threshold value, the electric vehicle has electric leakage, and the charging port is connected with the charging gun, the electric vehicle is controlled to be in a state capable of responding to a charging process;

and when the detection device is normal, the charging port cover is in an open state, the vehicle speed is not greater than the threshold value, the electric vehicle has electric leakage, and the charging port is not connected with the charging gun, controlling the electric vehicle to be in a non-high-voltage state.

18. The electric vehicle high voltage safety control method according to claim 13 or 16, further comprising the steps of:

19. An electric vehicle high-voltage safety control device, characterized by comprising:

at least one memory; and

at least one processor, the at least one memory stored with one or more instructions that, when executed by the at least one processor, cause the apparatus to implement the method of any of claims 1-18.

20. A vehicle characterized by comprising the electric vehicle high-voltage safety control device of claim 19.