Vehicle controller, vehicle control method, and vehicle

Abstract

A vehicle controller, a vehicle control method and a vehicle, the vehicle controller includes a battery management control module and a detection module, wherein: the battery management control module is connected to the charging contactor of the vehicle, and is used to control the charging contactor to be attracted or disconnected, so as to respectively realize the charging condition and the non-charging condition of the vehicle; the detection module is connected to the charging contactor, and is used to detect the state of the charging contactor; the detection module is also connected to the battery management control module in communication, and when the detection module detects that the charging contactor is in the attracted state under the non-charging condition, it sends a contactor mis-attracting alarm signal to the battery management control module; after receiving the contactor mis-attracting alarm signal, the battery management control module sends a control signal to control the charging contactor to be disconnected. The present application can detect the mis-attracting of the charging contactor under the non-charging condition, and avoid the safety accident of electric shock.

Description

Technical Field

[0001] The present application relates to the field of security of rail transit systems, and in particular to a vehicle controller, a vehicle control method, and a vehicle. Background Art

[0002] New energy vehicles have a charging function, which uses charging to obtain kinetic energy to drive the vehicle. According to the GB / T 18487.1-2015 standard, new energy vehicles should have charging contactors, including positive contactors and negative contactors. The function of the charging contactor is to close during charging so that the charging pile can output power to the vehicle to charge the power battery, and to disconnect during non-charging so that the charging port does not carry high voltage electricity to ensure safety.

[0003] At present, most new energy vehicles have only carried out the sintering test of the positive and negative charging contactors as required by the standard, but have not carried out the detection function of the false attraction of the positive and negative charging contactors. When the positive and negative charging contactors are mistakenly attracted, there may be a situation where the charging port has high voltage and causes a safety accident of electric shock to people. Summary of the invention

[0004] The present application is proposed to solve the above problems. According to one aspect of the present application, a vehicle controller is provided, the vehicle controller includes a battery management control module and a detection module, wherein: the battery management control module is connected to the charging contactor of the vehicle, and is used to control the charging contactor to be attracted or disconnected, so as to respectively realize the charging condition and the non-charging condition of the vehicle; the detection module is connected to the charging contactor, and is used to detect the state of the charging contactor; the detection module is also connected to the battery management control module in communication, and when the detection module detects that the charging contactor is in the attracted state under the non-charging condition, it sends a contactor mis-attracting alarm signal to the battery management control module; after receiving the contactor mis-attracting alarm signal, the battery management control module sends a control signal to control the charging contactor to be disconnected.

[0005] In one embodiment of the present application, the detection module is a module for detecting voltage; the detection module detects the state of the charging contactor including: detecting the level state of the control pin of the charging contactor; the detection module detects that the charging contactor is in the attracted state under the non-charging condition including: the detection module detects that the control pin of the charging contactor is at a low level under the non-charging condition.

[0006] In one embodiment of the present application, after the battery management control module sends the control signal, the detection module is also used to detect the voltage of the charging port of the vehicle and send the voltage detection result to the battery management control module; when the voltage of the charging port is greater than or equal to a preset voltage threshold, the battery management control module controls the main positive contactor and the main negative contactor of the vehicle to disconnect.

[0007] In one embodiment of the present application, after issuing the control signal, the battery management control module is also used to obtain the current speed of the vehicle, and when the current speed of the vehicle is less than or equal to a preset speed threshold, the main positive contactor and the main negative contactor of the vehicle are controlled to be disconnected.

[0008] In one embodiment of the present application, after the battery management control module sends the control signal, the detection module is also used to detect the voltage of the charging port of the vehicle and send the voltage detection result to the battery management control module; when the voltage of the charging port is greater than or equal to a preset voltage threshold, the battery management control module is also used to obtain the current speed of the vehicle, and when the current speed of the vehicle is less than or equal to the preset speed threshold, the main positive contactor and the main negative contactor of the vehicle are controlled to disconnect.

[0009] In one embodiment of the present application, the detection module determines that the vehicle is in a non-charging condition in the following manner: no charging gun connection signal is detected within a first preset time.

[0010] In one embodiment of the present application, the detection module determines that the charging contactor is detected to be in the energized state in the following manner: the charging contactor is continuously detected to be in the energized state within a second preset time.

[0011] According to another aspect of the present application, a vehicle control method is provided, which includes: detecting the state of the charging contactor of the vehicle under non-charging conditions; when it is detected that the charging contactor is in an energized state, generating a contactor mis-engagement alarm signal and issuing a control signal to control the charging contactor to disconnect.

[0012] In one embodiment of the present application, the detecting the state of the charging contactor of the vehicle under non-charging conditions includes: detecting the level state of a control pin of the charging contactor under non-charging conditions; the detecting that the charging contactor is in an attracted state includes: detecting that the control pin of the charging contactor is at a low level.

[0013] In one embodiment of the present application, the method further includes: after issuing the control signal, detecting the voltage of the charging port of the vehicle, and when the voltage of the charging port is greater than or equal to a preset voltage threshold, controlling the main positive contactor and the main negative contactor of the vehicle to disconnect.

[0014] In one embodiment of the present application, the method further includes: after issuing the control signal, obtaining the current vehicle speed of the vehicle, and when the current vehicle speed of the vehicle is less than or equal to a preset speed threshold, controlling the main positive contactor and the main negative contactor of the vehicle to disconnect.

[0015] In one embodiment of the present application, the method also includes: after issuing the control signal, detecting the voltage of the charging port of the vehicle; when the voltage of the charging port is greater than or equal to a preset voltage threshold, obtaining the current speed of the vehicle; when the current speed of the vehicle is less than or equal to a preset speed threshold, controlling the main positive contactor and the main negative contactor of the vehicle to disconnect.

[0016] In one embodiment of the present application, the method determines that the vehicle is in a non-charging condition in the following manner: no charging gun connection signal is detected within a first preset time.

[0017] In one embodiment of the present application, the method determines that the charging contactor is detected to be in the energized state in the following manner: the charging contactor is continuously detected to be in the energized state within a second preset time.

[0018] According to yet another aspect of the present application, a vehicle is provided, comprising the above-mentioned vehicle controller.

[0019] According to the vehicle controller, vehicle control method and vehicle of the embodiments of the present application, it is possible to detect the condition in which the battery management control module abnormally controls the charging contactor to be energized under non-charging conditions, thereby achieving the effect of improving the hardware or software stability of the battery management control module, and avoiding safety accidents such as electric shock caused by the charging port being energized due to the battery management control module abnormally controlling the charging contactor to be energized under non-charging conditions. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] By describing the embodiments of the present application in more detail in conjunction with the accompanying drawings, the above and other purposes, features and advantages of the present application will become more apparent. The accompanying drawings are used to provide a further understanding of the embodiments of the present application and constitute a part of the specification. Together with the embodiments of the present application, they are used to explain the present application and do not constitute a limitation of the present application. In the accompanying drawings, the same reference numerals generally represent the same components or steps.

[0021] Figure 1 A schematic structural block diagram of a vehicle controller according to an embodiment of the present application is shown.

[0022] Figure 2 A schematic structural block diagram of a vehicle controller according to another embodiment of the present application is shown.

[0023] Figure 3 A schematic structural block diagram of a vehicle controller according to another embodiment of the present application is shown.

[0024] Figure 4 A schematic structural block diagram of a vehicle controller according to yet another embodiment of the present application is shown.

[0025] Figure 5 A schematic flow chart of a vehicle control method according to an embodiment of the present application is shown.

[0026] Figure 6 A schematic flowchart of a vehicle control method according to another embodiment of the present application is shown.

[0027] Figure 7 A schematic flowchart of a vehicle control method according to another embodiment of the present application is shown.

[0028] Figure 8 A schematic flowchart of a vehicle control method according to yet another embodiment of the present application is shown. DETAILED DESCRIPTION

[0029] In order to make the purpose, technical solutions and advantages of the present application more obvious, the example embodiments according to the present application will be described in detail with reference to the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments of the present application, and it should be understood that the present application is not limited to the example embodiments described herein. Based on the embodiments of the present application described in the present application, all other embodiments obtained by those skilled in the art without creative work should fall within the scope of protection of the present application.

[0030] First, refer to Figures 1 to 4 A vehicle controller is described according to one aspect of the present application.

[0031] Figure 1 FIG. 1 shows a schematic structural block diagram of a vehicle controller 100 according to an embodiment of the present application. Figure 1As shown, the vehicle controller 100 includes a battery management control module BMC and a detection module DM. Among them, the battery management control module BMC is connected to the charging contactors K5 and K6 of the vehicle (one of K5 and K6 is a positive charging contactor, and the other is a negative charging contactor), and is used to control the charging contactors K5 and K6 to be attracted or disconnected respectively, so as to realize the charging condition and non-charging condition of the vehicle respectively (that is, the positive charging contactor and the negative charging contactor are both attracted to indicate the charging condition; the positive charging contactor and the negative charging contactor are both disconnected to indicate the non-charging condition). The detection module DM is connected to the charging contactors K5 and K6, and is used to detect the level state of the control pins of the charging contactors K5 and K6. The detection module DM is also communicatively connected with the battery management control module BMC (such as Figure 1 As shown by the dotted line in FIG, for example, through the controller area network CAN communication connection), when the detection module DM detects that at least one of the charging contactors K5 and K6 is in the energized state under the non-charging condition, the contactor misengagement alarm signal is sent to the battery management control module BMC. After receiving the contactor misengagement alarm signal, the battery management control module BMC sends a control signal to control both the charging contactors K5 and K6 to be disconnected.

[0032] In an embodiment of the present application, the battery management control module BMC can send a control signal to the charging contactors K5 and K6 when receiving charging information (such as a charging gun connection signal) from the charging pile, so that the charging contactors K5 and K6 are respectively attracted (closed). In this way, a high-voltage circuit is formed between the charging pile and the power battery pack, and the charging pile charges the power battery pack of the vehicle. In general, the BMC will control the charging contactors K5 and K6 to be attracted only when charging is started, and will not control the charging contactors K5 and K6 to be attracted in other cases. However, there may be a false attraction failure caused by BMC software or hardware problems, which may cause a safety accident of electric shock to personnel. Based on this, the vehicle controller according to the embodiment of the present application includes a detection module DM, which can detect the state of the charging contactors K5 and K6. When at least one of the charging contactors K5 and K6 is detected to be in an attracted state under non-charging conditions, it can be considered that the current charging contactor has been mistakenly attracted, and the detection module DM can send a contactor false attraction alarm signal to the battery management control module BMC. When the BMC receives the contactor false closure alarm signal, it can control the charging contactor K5 and / or K6 in the closure state to disconnect, thereby disconnecting the high-voltage circuit to avoid electric shock accidents.

[0033] In an embodiment of the present application, the detection module DM may be a module for detecting voltage. Based on this, the detection module DM detects the status of the charging contactors K5 and K6 including: detecting the level status of the control pins of the charging contactors K5 and K6; when the control pins of the charging contactors K5 and / or K6 are detected to be at a low level under non-charging conditions, a contactor mis-engagement alarm signal is issued. In this embodiment, the status of the charging contactors K5 and K6 is detected by detecting voltage. In other embodiments, the status of the charging contactors K5 and K6 may also be detected by other means, such as by detecting current, etc.

[0034] Since the control line of the battery management control module BMC is generally connected to the coils of the charging contactors K5 and K6, one end of the coil is connected to the power supply, and the other end is connected to the control signal (pulled low), therefore, the detection module DM can include two detection lines connected to the control lines of the BMC charging contactors K5 and K6, so as to detect the level state of the control pins of the charging contactors K5 and K6. When the level state is low under non-charging conditions, it can be considered that the current charging contactors K5 and K6 are mis-engaged, and the detection module DM can send a contactor mis-engagement alarm signal to the battery management control module BMC. BMC receives the contactor mis-engagement alarm signal and can control the charging contactors K5 and K6 to disconnect, thereby disconnecting the high-voltage circuit to avoid electric shock accidents.

[0035] In an embodiment of the present application, the detection module DM can determine that the vehicle is in a non-charging condition in the following manner: no charging gun connection signal is detected within a first preset time. The first preset time can be set as required. In one example, the first preset time is 15s. In this example, when the detection module DM fails to detect a charging gun connection signal for 15s, it is determined that the vehicle is in a non-charging condition.

[0036] In an embodiment of the present application, the detection module DM can determine that the control pins of the charging contactors K5 and K6 are detected to be at a low level by: the control pins are continuously detected to be at a low level within a second preset time. The second preset time can be set as required. In one example, the second preset time is 500ms. In this example, when the detection module DM detects that the control pins of the charging contactors K5 and K6 are at a low level for 500ms under non-charging conditions, a contactor mis-engagement alarm signal can be sent to the detection module DM.

[0037] In an embodiment of the present application, the vehicle controller 100 may also include a controller area network CAN. The detection module DM may confirm through a message that there is no charging gun connection signal. It may also determine that the vehicle is in a non-charging condition and detects that the control pins of the charging contactors K5 and K6 are at a low level, record the relevant charging contactor mis-attracting fault code, and send the contactor mis-attracting alarm signal to the controller area network CAN in the form of a message. The battery management control module BMC may obtain the contactor mis-attracting alarm signal via the controller area network CAN. Here, the relevant charging contactor mis-attracting fault code may include a K5 mis-attracting fault code and / or a K6 mis-attracting fault code. Therefore, as long as one of the positive charging contactor and the negative charging contactor is mis-attracted, the contactor mis-attracting alarm information may be sent. Alternatively, the contactor mis-attracting alarm information may be sent only when both the positive charging contactor and the negative charging contactor are mis-attracted.

[0038] Based on the above description, the vehicle controller 100 according to the embodiment of the present application can detect the condition in which the BMC abnormally controls the charging contactor to be energized under non-charging conditions, thereby achieving the effect of improving the stability of the BMC hardware or software, and can avoid safety accidents such as electric shock caused by the charging port being energized due to the BMC abnormally controlling the charging contactor to be energized under non-charging conditions.

[0039] Figure 2 FIG. 2 shows a schematic structural block diagram of a vehicle controller 200 according to another embodiment of the present application. Figure 2 As shown, Figure 2 As shown, the vehicle controller 200 includes a battery management control module BMC and a detection module DM. The battery management control module BMC is connected to the vehicle's charging contactors K5 and K6 (one of K5 and K6 is a positive charging contactor, and the other is a negative charging contactor), and is used to control the charging contactors K5 and K6 to be attracted or disconnected, respectively, so as to realize the charging condition and non-charging condition of the vehicle, respectively. The detection module DM is connected to the charging contactors K5 and K6, and is used to detect the status of the charging contactors K5 and K6. The detection module DM is also in communication connection with the battery management control module BMC (such as Figure 2 As shown by the dotted line in FIG. 1 , for example, via a controller area network (CAN) communication connection).

[0040] The vehicle controller 200 according to the embodiment of the present application is substantially similar to the vehicle controller 100 described above. For the sake of brevity, the same parts of the two are not repeated here, and only the differences are described. The difference between the two is that: in the vehicle controller 200, after the battery management control module BMC sends a control signal for controlling both K5 and K6 to be disconnected, the detection module DM also continues to detect the voltage of the vehicle's charging port and sends the voltage detection result to the battery management control module BMC; after receiving the contactor mis-attraction alarm signal, the battery management control module BMC continues to receive the voltage detection result of the charging port. When the voltage detection result indicates that the voltage of the charging port is greater than or equal to the preset voltage threshold, it indicates that the charging contactors K5 and K6 have failed to disconnect. At this time, the main positive contactor and the main negative contactor of the vehicle can be disconnected. Among them, the preset voltage threshold can be set according to the threshold of the control strategy, the voltage range of the whole vehicle, and at least one of the GB 18384-2020 standard. In one example, the preset voltage threshold is greater than or equal to 60V, such as 200V. Therefore, relative to the vehicle controller 100, the vehicle controller 200, after sending a control signal for controlling the charging contactors K5 and K6 to be disconnected, also detects the voltage of the charging port. When the voltage meets certain conditions, it can determine that the charging contactors K5 and K6 have failed to be disconnected. At this time, the main positive contactor and the main negative contactor of the vehicle are controlled to be disconnected, thereby improving the reliability of electric shock protection.

[0041] Based on the above description, the vehicle controller 200 according to the embodiment of the present application can detect the condition that the BMC abnormally controls the charging contactor to be pulled in when the gun is not plugged in, thereby achieving the effect of improving the stability of the BMC hardware or software, and can avoid the safety accident of electric shock caused by the charging port being charged due to the abnormal control of the charging contactor by the BMC when the gun is not plugged in. In addition, the vehicle controller 200 according to the embodiment of the present application can also improve the reliability of electric shock protection.

[0042] Figure 3 FIG. 2 shows a schematic structural block diagram of a vehicle controller 300 according to another embodiment of the present application. Figure 3 As shown, Figure 3 As shown, the vehicle controller 300 includes a battery management control module BMC and a detection module DM. The battery management control module BMC is connected to the vehicle's charging contactors K5 and K6 (one of K5 and K6 is a positive charging contactor, and the other is a negative charging contactor), and is used to control the charging contactors K5 and K6 to be attracted or disconnected, respectively, so as to realize the charging condition and non-charging condition of the vehicle, respectively. The detection module DM is connected to the charging contactors K5 and K6, and is used to detect the status of the charging contactors K5 and K6. The detection module DM is also in communication connection with the battery management control module BMC (such as Figure 3As shown by the dotted line in FIG. 1 , for example, via a controller area network (CAN) communication connection).

[0043] The vehicle controller 300 according to the embodiment of the present application is substantially similar to the vehicle controller 100 described above. For the sake of brevity, the same parts of the two are not repeated here, and only the differences are described. The difference between the two is that in the vehicle controller 300, after the battery management control module BMC sends a control signal for controlling both K5 and K6 to be disconnected, the current speed of the vehicle can also be obtained. When the current speed of the vehicle is less than or equal to the preset speed threshold, the main positive contactor and the main negative contactor of the vehicle are controlled to be disconnected. Among them, the preset speed threshold can be set according to actual needs. In one example, the preset speed threshold is, for example, 3km / h. Therefore, relative to the vehicle controller 100, the vehicle controller 300 also detects the vehicle speed after sending a control signal for controlling both the charging contactors K5 and K6 to be disconnected. When the vehicle speed is less than or equal to the preset speed threshold, the main positive contactor and the main negative contactor of the vehicle are controlled to be disconnected, which can improve the reliability of electric shock protection. Because, in the event that the charging contactors K5 and K6 fail to disconnect, when the vehicle speed is low, such as when it is parked, the possibility of a person touching the charging port is greater than when the vehicle is traveling at high speed. Therefore, disconnecting the main positive contactor and the main negative contactor at this time can further improve the reliability of electric shock protection.

[0044] Based on the above description, the vehicle controller 300 according to the embodiment of the present application can detect the condition that the BMC abnormally controls the charging contactor to be closed when the gun is not plugged in, thereby achieving the effect of improving the stability of the BMC hardware or software, and can avoid the safety accident of electric shock caused by the charging port being energized due to the abnormal control of the charging contactor by the BMC when the gun is not plugged in. In addition, the vehicle controller 300 according to the embodiment of the present application can also improve the reliability of electric shock protection.

[0045] Figure 4 FIG. 4 shows a schematic structural block diagram of a vehicle controller 400 according to another embodiment of the present application. Figure 4 As shown, Figure 4 As shown, the vehicle controller 400 includes a battery management control module BMC and a detection module DM. The battery management control module BMC is connected to the vehicle's charging contactors K5 and K6 (one of K5 and K6 is a positive charging contactor, and the other is a negative charging contactor), and is used to control the charging contactors K5 and K6 to be attracted or disconnected, respectively, so as to realize the charging condition and non-charging condition of the vehicle, respectively. The detection module DM is connected to the charging contactors K5 and K6, and is used to detect the status of the charging contactors K5 and K6. The detection module DM is also in communication connection with the battery management control module BMC (such as Figure 4 As shown by the dotted line in FIG. 1 , for example, via a controller area network (CAN) communication connection).

[0046] The vehicle controller 400 according to the embodiment of the present application has similar parts to the vehicle controller 100 described above. For the sake of brevity, the identical parts of the two are not repeated here, and only the differences are described. The difference between the two is that: in the vehicle controller 400, after the battery management control module BMC sends a control signal for controlling both K5 and K6 to be disconnected, the detection module DM continues to detect the voltage of the charging port of the vehicle, and sends the voltage detection result to the battery management control module BMC; when the voltage detection result indicates that the voltage of the charging port is greater than or equal to the preset voltage threshold, the battery management control module BMC can obtain the current speed of the vehicle, and when the current speed of the vehicle is less than or equal to the preset speed threshold, the main positive contactor and the main negative contactor of the vehicle are controlled to be disconnected. Among them, the settings of the above-mentioned preset voltage threshold and the preset speed threshold are as described above in combination with Figure 2 and Figure 3 As described in the embodiment described. Therefore, relative to the vehicle controller 100, the vehicle controller 400, after sending a control signal for controlling the charging contactors K5 and K6 to be disconnected, also detects the voltage of the charging port. When the voltage meets certain conditions, it can be determined that the charging contactors K5 and K6 have failed to disconnect. At this time, the vehicle speed is further obtained. When the vehicle speed is less than or equal to the preset speed threshold, the main positive contactor and the main negative contactor of the vehicle are controlled to be disconnected, which can improve the reliability of electric shock protection. Because, in the case of failure to disconnect the charging contactors K5 and K6, the vehicle speed is low, such as when parking, and the possibility of a person touching the charging port is greater than when the vehicle is driving at high speed. Therefore, disconnecting the main positive contactor and the main negative contactor at this time can further improve the reliability of electric shock protection.

[0047] Based on the above description, the vehicle controller 400 according to the embodiment of the present application can detect the condition in which the BMC abnormally controls the charging contactor to be energized under non-charging conditions, thereby achieving the effect of improving the stability of the BMC hardware or software, and can avoid safety accidents in which the charging port is energized and people are electrocuted due to the abnormal control of the charging contactor by the BMC under non-charging conditions. In addition, the vehicle controller 400 according to the embodiment of the present application can also improve the reliability of electric shock protection. In addition, the vehicle controller 400 according to the embodiment of the present application can also avoid the misjudgment of a charging contactor sintering failure due to the abnormal control of the charging contactor by the BMC under non-charging conditions, thereby avoiding affecting customer experience and after-sales costs.

[0048] In addition, general new energy vehicles already include a battery management control module BMC, so the vehicle controller 400 of the present application only needs to add a detection module DM to realize the sintering detection function and the false attraction function of the positive and negative charging contactors, which can avoid the situation where the positive and negative charging contactors are mistakenly judged as sintered contactors due to false attraction, thereby improving the user experience and the stability of the BMC's software and hardware; secondly, the development cycle is short and the cost is low, and there is no need to change other vehicle hardware such as BMC. A simple detection module can be directly added, and its related circuits are mature, stable and low-cost.

[0049] In the above-mentioned embodiment of the present application, the aforementioned charging contactor can be a DC charging contactor, and accordingly, the aforementioned charging condition is a DC charging condition, and the aforementioned non-charging condition is a non-DC charging condition (i.e., a condition not using DC charging). Alternatively, the aforementioned charging contactor can be an AC charging contactor, and accordingly, the aforementioned charging condition is an AC charging condition, and the aforementioned non-charging condition is a non-AC charging condition (i.e., a condition not using AC charging).

[0050] The above exemplary shows a vehicle controller provided according to one aspect of the present application. Figures 5 to 8 The vehicle control methods 500 to 800 provided according to another aspect of the present application are described, which can be implemented by the aforementioned vehicle controllers 100 to 400, respectively. For the sake of brevity, only the main steps of the vehicle control methods 500 to 800 are described here, and other details are not repeated, which can be understood in combination with the above content.

[0051] like Figure 5 As shown, the vehicle control method 500 may include the following steps:

[0052] In step S510, the state of the charging contactor of the vehicle in a non-charging condition is detected.

[0053] In step S520, when it is detected that the charging contactor is in the energized state, a contactor misengagement alarm signal is generated and a control signal is sent out to control the charging contactor to be disconnected.

[0054] The vehicle control method 500 according to the embodiment of the present application can detect the condition in which the battery management control module abnormally controls the charging contactor to be energized under non-charging conditions, thereby achieving the effect of improving the hardware or software stability of the battery management control module, and can avoid safety accidents such as electric shock caused by the charging port being energized due to the battery management control module abnormally controlling the charging contactor to be energized under non-charging conditions.

[0055] like Figure 6 As shown, the vehicle control method 600 may include the following steps:

[0056] In step S610, the state of the charging contactor of the vehicle in a non-charging condition is detected.

[0057] In step S620, when it is detected that the charging contactor is in the energized state, a contactor misengagement alarm signal is generated, and a control signal is sent to control the charging contactor to be disconnected.

[0058] In step S630, the voltage of the charging port of the vehicle is detected, and when the voltage of the charging port is greater than or equal to a preset voltage threshold, the main positive contactor and the main negative contactor of the vehicle are controlled to be disconnected.

[0059] The vehicle control method 600 according to the embodiment of the present application can detect the condition in which the battery management control module abnormally controls the charging contactor to be energized under non-charging conditions, thereby achieving the effect of improving the stability of the hardware or software of the battery management control module, and can avoid safety accidents such as electric shock caused by the charging port being energized due to the battery management control module abnormally controlling the charging contactor to be energized under non-charging conditions, and can also improve the reliability of electric shock protection.

[0060] like Figure 7 As shown, the vehicle control method 700 may include the following steps:

[0061] In step S710, the state of the charging contactor of the vehicle in a non-charging state is detected.

[0062] In step S720, when it is detected that the charging contactor is in the energized state, a contactor misengagement alarm signal is generated, and a control signal is sent to control the charging contactor to be disconnected.

[0063] In step S730, the current speed of the vehicle is obtained, and when the current speed of the vehicle is less than or equal to a preset speed threshold, the main positive contactor and the main negative contactor of the vehicle are controlled to be disconnected.

[0064] The vehicle control method 700 according to the embodiment of the present application can detect the condition in which the battery management control module abnormally controls the charging contactor to be energized under non-charging conditions, thereby achieving the effect of improving the hardware or software stability of the battery management control module, and can avoid safety accidents such as electric shock caused by the charging port being energized due to the battery management control module abnormally controlling the charging contactor to be energized under non-charging conditions, and can also improve the reliability of electric shock protection.

[0065] like Figure 8 As shown, the vehicle control method 800 may include the following steps:

[0066] In step S810, the state of the charging contactor of the vehicle in a non-charging condition is detected.

[0067] In step S820, when it is detected that the charging contactor is in the energized state, a contactor misengagement alarm signal is generated, and a control signal is sent to control the charging contactor to be disconnected.

[0068] In step S830, the voltage of the charging port of the vehicle is detected, and when the voltage of the charging port is greater than or equal to a preset voltage threshold, the current speed of the vehicle is obtained.

[0069] In step S840, when the current vehicle speed is less than or equal to a preset speed threshold, the main positive contactor and the main negative contactor of the vehicle are controlled to be disconnected.

[0070] The vehicle control method 800 according to the embodiment of the present application can detect the condition in which the battery management control module abnormally controls the charging contactor to be energized under non-charging conditions, thereby achieving the effect of improving the stability of the hardware or software of the battery management control module, and can avoid safety accidents such as electric shock to personnel caused by the charging port being energized due to the battery management control module abnormally controlling the charging contactor to be energized under non-charging conditions. It can also improve the reliability of electric shock protection, and can also avoid the drive controller erroneously judging it as a sintering fault of the charging contactor due to the battery management control module abnormally controlling the charging contactor to be energized under non-charging conditions, thereby avoiding affecting customer experience and after-sales costs.

[0071] According to another aspect of the present application, a vehicle is also provided, which includes the vehicle controller according to the embodiment of the present application described above, so that the vehicle can detect the condition in which the battery management control module abnormally controls the charging contactor to be energized under non-charging conditions, thereby achieving the effect of improving the stability of the hardware or software of the battery management control module, and can avoid safety accidents such as electric shock to people caused by the charging port being energized due to the battery management control module abnormally controlling the charging contactor to be energized under non-charging conditions. It can also improve the reliability of electric shock protection, and can also avoid the drive controller erroneously judging it as a sintering fault of the charging contactor due to the battery management control module abnormally controlling the charging contactor to be energized under non-charging conditions, thereby avoiding affecting customer experience and after-sales costs.

[0072] Although example embodiments have been described herein with reference to the accompanying drawings, it should be understood that the above example embodiments are merely exemplary and are not intended to limit the scope of the present application to this. Those of ordinary skill in the art may make various changes and modifications therein without departing from the scope and spirit of the present application. All these changes and modifications are intended to be included within the scope of the present application as required by the appended claims.

[0073] Those of ordinary skill in the art will appreciate that the units and algorithm steps of each example described in conjunction with the embodiments disclosed herein can be implemented in electronic hardware, or a combination of computer software and electronic hardware. Whether these functions are performed in hardware or software depends on the specific application and design constraints of the technical solution. Professional and technical personnel can use different methods to implement the described functions for each specific application, but such implementation should not be considered to be beyond the scope of this application.

[0074] In the several embodiments provided in this application, it should be understood that the disclosed devices and methods can be implemented in other ways. For example, the device embodiments described above are only schematic, for example, the division of the units is only a logical function division, and there may be other division methods in actual implementation, such as multiple units or components can be combined or integrated into another device, or some features can be ignored or not executed.

[0075] In the description provided herein, a large number of specific details are described. However, it is understood that the embodiments of the present application can be practiced without these specific details. In some instances, well-known methods, structures and techniques are not shown in detail so as not to obscure the understanding of this description.

[0076] Similarly, it should be understood that in order to streamline the present application and help understand one or more of the various inventive aspects, in the description of the exemplary embodiments of the present application, the various features of the present application are sometimes grouped together into a single embodiment, figure, or description thereof. However, the method of the present application should not be interpreted as reflecting the following intention: the claimed application requires more features than the features clearly stated in each claim. More specifically, as reflected in the corresponding claims, the inventive point is that the corresponding technical problem can be solved with features less than all the features of a single disclosed embodiment. Therefore, the claims following the specific embodiment are hereby explicitly incorporated into the specific embodiment, wherein each claim itself serves as a separate embodiment of the present application.

[0077] It will be understood by those skilled in the art that, except for mutually exclusive features, all features disclosed in this specification (including the accompanying claims, abstracts and drawings) and all processes or units of any method or device disclosed in this specification may be combined in any combination. Unless otherwise expressly stated, each feature disclosed in this specification (including the accompanying claims, abstracts and drawings) may be replaced by an alternative feature that provides the same, equivalent or similar purpose.

[0078] In addition, those skilled in the art will appreciate that, although some embodiments described herein include certain features included in other embodiments but not other features, the combination of features of different embodiments is meant to be within the scope of the present application and form different embodiments. For example, in the claims, any one of the claimed embodiments can be used in any combination.

[0079] The various component embodiments of the present application can be implemented in hardware, or in software modules running on one or more processors, or in a combination thereof. It should be understood by those skilled in the art that a microprocessor or a digital signal processor (DSP) can be used in practice to implement some or all of the functions of some modules according to the embodiments of the present application. The present application can also be implemented as a vehicle controller program (e.g., a computer program and a computer program product) for executing part or all of the methods described herein. Such a program implementing the present application can be stored on a computer-readable medium, or can have the form of one or more signals. Such a signal can be downloaded from an Internet website, or provided on a carrier signal, or provided in any other form.

[0080] It should be noted that the above embodiments illustrate rather than limit the present application, and that those skilled in the art may design alternative embodiments without departing from the scope of the appended claims. In the claims, any reference symbol between brackets should not be constructed as a limitation on the claims. The word "comprising" does not exclude the presence of elements or steps not listed in the claims. The word "one" or "an" preceding an element does not exclude the presence of multiple such elements. The present application may be implemented with the aid of hardware comprising several different elements and with the aid of appropriately programmed computers. In a unit claim listing several vehicle controllers, several of these vehicle controllers may be embodied by the same hardware item. The use of the words first, second, and third, etc. does not indicate any order. These words may be interpreted as names.

[0081] The above is only a specific implementation or description of a specific implementation of the present application, and the protection scope of the present application is not limited thereto. Any technician familiar with the technical field can easily think of changes or substitutions within the technical scope disclosed in the present application, which should be included in the protection scope of the present application. The protection scope of the present application shall be based on the protection scope of the claims.

Claims

1. A vehicle controller, characterized in that: The vehicle controller includes a battery management control module and a detection module, wherein: The battery management control module is connected to the charging contactor of the vehicle, and is used to control the charging contactor to be closed or disconnected, so as to respectively realize the charging condition and the non-charging condition of the vehicle, wherein the charging contactor includes a positive charging contactor and a negative charging contactor, and the positive charging contactor and the negative charging contactor are both closed to indicate the charging condition, and the positive charging contactor and the negative charging contactor are both disconnected to indicate the non-charging condition; The detection module is connected to the positive charging contactor and the negative charging contactor, and is used to detect the states of the positive charging contactor and the negative charging contactor; The detection module is connected to the battery management control module through a controller local area network, and when the detection module detects that at least one of the positive charging contactor and the negative charging contactor is in a closed state under the non-charging condition, the detection module sends a contactor mis-closed alarm signal to the battery management control module; After receiving the contactor mis-engagement alarm signal, the battery management control module sends a control signal to control the positive charging contactor and the negative charging contactor to be disconnected.

2. The vehicle controller according to claim 1, characterized in that: The detection module is a module for detecting voltage; The detection module detects the states of the positive charging contactor and the negative charging contactor, including: detecting the level states of the control pins of the positive charging contactor and the negative charging contactor respectively; The detection module detects that at least one of the positive charging contactor and the negative charging contactor is in the energized state under the non-charging condition, including: the detection module detects that the control pin of at least one of the positive charging contactor and the negative charging contactor is at a low level under the non-charging condition.

3. The vehicle controller according to claim 1, characterized in that: After the battery management control module sends the control signal, the detection module is also used to detect the voltage of the charging port of the vehicle and send the voltage detection result to the battery management control module; When the voltage of the charging port is greater than or equal to a preset voltage threshold, the battery management control module controls the main positive contactor and the main negative contactor of the vehicle to be disconnected.

4. The vehicle controller according to claim 1, characterized in that: After sending the control signal, the battery management control module is also used to obtain the current speed of the vehicle, and when the current speed of the vehicle is less than or equal to a preset speed threshold, the main positive contactor and the main negative contactor of the vehicle are controlled to be disconnected.

5. The vehicle controller according to claim 1, characterized in that: After the battery management control module sends the control signal, the detection module is also used to detect the voltage of the charging port of the vehicle and send the voltage detection result to the battery management control module; When the voltage of the charging port is greater than or equal to a preset voltage threshold, the battery management control module is also used to obtain the current speed of the vehicle. When the current speed of the vehicle is less than or equal to a preset speed threshold, the main positive contactor and the main negative contactor of the vehicle are controlled to disconnect.

6. The vehicle controller according to any one of claims 1 to 5, characterized in that: The detection module determines that the vehicle is in a non-charging state in the following manner: no charging gun connection signal is detected within a first preset time.

7. The vehicle controller according to any one of claims 1 to 5, characterized in that: The detection module determines that at least one of the positive charging contactor and the negative charging contactor is in the energized state by continuously detecting that at least one of the positive charging contactor and the negative charging contactor is in the energized state within a second preset time.

8. A vehicle control method, executed by the vehicle controller according to any one of claims 1 to 7, characterized in that: The vehicle control method comprises: Detecting the state of the charging contactor of the vehicle in a non-charging condition, wherein the charging contactor includes a positive charging contactor and a negative charging contactor, the positive charging contactor and the negative charging contactor are both closed to indicate a charging condition, and the positive charging contactor and the negative charging contactor are both disconnected to indicate a non-charging condition; When it is detected that at least one of the positive charging contactor and the negative charging contactor is in the energized state, a contactor misengagement alarm signal is generated and a control signal is issued to control the positive charging contactor and the negative charging contactor to be disconnected.

9. The control method according to claim 8, characterized in that: The detecting the state of the charging contactor of the vehicle under the non-charging condition comprises: detecting the level state of the control pins of the positive charging contactor and the negative charging contactor under the non-charging condition; The detecting that at least one of the positive charging contactor and the negative charging contactor is in the attracted state includes: detecting that a control pin of at least one of the positive charging contactor and the negative charging contactor is at a low level.

10. The control method according to claim 8, characterized in that: The method further comprises: After the control signal is sent, the voltage of the charging port of the vehicle is detected, and when the voltage of the charging port is greater than or equal to a preset voltage threshold, the main positive contactor and the main negative contactor of the vehicle are controlled to be disconnected.

11. The control method according to claim 8, characterized in that: The method further comprises: After the control signal is sent, the current speed of the vehicle is acquired, and when the current speed of the vehicle is less than or equal to a preset speed threshold, the main positive contactor and the main negative contactor of the vehicle are controlled to be disconnected.

12. The control method according to claim 8, characterized in that: The method further comprises: After sending the control signal, detecting the voltage of the charging port of the vehicle; When the voltage of the charging port is greater than or equal to a preset voltage threshold, obtaining the current speed of the vehicle; When the current vehicle speed of the vehicle is less than or equal to a preset speed threshold, the main positive contactor and the main negative contactor of the vehicle are controlled to be disconnected.

13. The control method according to any one of claims 8 to 12, characterized in that: The method determines that the vehicle is in a non-charging state in the following manner: no charging gun connection signal is detected within a first preset time.

14. The control method according to any one of claims 8 to 12, characterized in that: The method determines that at least one of the positive charging contactor and the negative charging contactor is detected to be in the energized state by: continuously detecting that at least one of the positive charging contactor and the negative charging contactor is in the energized state within a second preset time.

15. A vehicle, characterized in that: The vehicle comprises the vehicle controller according to any one of claims 1-7.

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