Vehicle discharge control method, storage medium and vehicle

Abstract

The invention provides a vehicle discharge control method, a storage medium and a vehicle. The vehicle includes a high pressure water heater including a bleed circuit. The vehicle discharge control method comprises the steps of detecting whether a vehicle collides or not; if it is detected that the vehicle collides, the high-pressure water heater is controlled to stop working; and after the high-pressure water heater stops working, the discharge loop is controlled to perform active discharge, so that the voltage after the vehicle is collided is reduced to be below a voltage threshold value. According to the invention, the discharge loop of the high-pressure water heater is used for active discharge, so that the voltage of the vehicle after collision is reduced to be below the voltage threshold, and the safety risk is reduced.

Description

Technical Field

[0001] The present application relates to the field of vehicle discharge, and in particular to a vehicle discharge control method, a storage medium, and a vehicle. Background Art

[0002] To ensure high-voltage safety, national standards clearly stipulate that after a vehicle collision, high-voltage power must be immediately disconnected to prevent electric shock accidents caused by direct or indirect contact with high-voltage live parts. Related technologies require additional circuitry for active discharge, which is costly. Summary of the Invention

[0003] The present application provides a low-cost vehicle discharge control method, storage medium and vehicle.

[0004] An embodiment of the present application provides a vehicle discharge control method, wherein the vehicle includes a high-pressure water heater, and the high-pressure water heater includes a discharge circuit. The vehicle discharge control method includes:

[0005] detecting whether a vehicle has collided; if a collision is detected, controlling the high-pressure water heater to stop working; and

[0006] After the high-pressure water heater stops working, the discharge circuit is controlled to perform active discharge, so that the voltage of the vehicle after the collision is reduced to below the voltage threshold.

[0007] Optionally, the discharge circuit includes a discharge switch and a discharge resistor; after the high-pressure water heater stops working, controlling the discharge circuit to perform active discharge so that the voltage of the vehicle after the collision is reduced to below a voltage threshold includes:

[0008] The discharge switch is controlled to be turned on, so as to utilize the discharge resistor to convert the electrical energy when the vehicle collides into heat energy for active discharge.

[0009] Optionally, the vehicle discharge control method further includes:

[0010] detecting whether the voltage of the vehicle after the collision is lower than the voltage threshold;

[0011] If it is detected that the voltage of the vehicle after the collision is not lower than the voltage threshold, controlling the discharge circuit to keep discharging;

[0012] If it is detected that the voltage of the vehicle after the collision is lower than the voltage threshold, the discharge circuit is controlled to stop discharging.

[0013] Optionally, the vehicle further includes a passive discharge circuit; and the vehicle discharge control method further includes:

[0014] detecting whether the voltage of the vehicle after the collision is lower than the voltage threshold, and detecting whether the discharge time of the discharge circuit is within a preset time period;

[0015] If it is detected that the voltage of the vehicle after the collision is lower than the voltage threshold, and it is detected that the discharge time of the discharge circuit does not exceed the preset period, controlling the discharge circuit to stop discharging;

[0016] If it is detected that the voltage of the vehicle after the collision is not lower than the voltage threshold, or if it is detected that the discharge time of the discharge circuit exceeds the preset period, the passive discharge circuit is controlled to perform passive discharge.

[0017] Optionally, the high-pressure water heater includes a plurality of discharge circuits; after the high-pressure water heater stops working, controlling the discharge circuits to actively discharge so that the voltage of the vehicle after the collision is reduced to below a voltage threshold includes:

[0018] Part or all of the plurality of bleeding circuits are controlled to perform active bleeding.

[0019] An embodiment of the present application further provides a computer-readable storage medium having a program stored thereon. When the program is executed by a processor, the vehicle discharge control method as described in any one of the above embodiments is implemented.

[0020] The present application also provides a vehicle, including:

[0021] High-pressure water heaters, including discharge circuits; and

[0022] An on-board controller is connected to the discharge circuit. The on-board controller is used to control the high-pressure water heater to stop working when a collision of the vehicle is detected. After controlling the high-pressure water heater to stop working, the discharge circuit is controlled to perform active discharge so that the voltage of the vehicle after the collision is reduced to below a voltage threshold.

[0023] Optionally, the high-pressure water heater includes a power supply; the discharge circuit includes a discharge switch and a discharge resistor, and the discharge switch and the discharge resistor are connected in series at both ends of the power supply; the on-board controller is connected to the discharge switch, and the on-board controller is used to control the discharge switch to be turned on after controlling the high-pressure water heater to stop working, so as to use the discharge resistor to convert the electrical energy of the vehicle into heat energy for active discharge when it collides.

[0024] Optionally, the discharge circuit includes at least one discharge switch and at least one discharge resistor;

[0025] The vehicle-mounted controller is used to control the at least one discharge switch to be turned on after controlling the high-pressure water heater to stop working, so as to use the at least one discharge resistor to convert the electrical energy when the vehicle collides into heat energy for active discharge.

[0026] Optionally, the discharge switch includes a first discharge switch, the power supply, the discharge resistor and the first discharge switch are connected in series, wherein the first discharge switch is connected between the discharge resistor and the negative electrode of the power supply.

[0027] Optionally, the discharge switch also includes a second discharge switch, and the power supply, the second discharge switch, the discharge resistor and the first discharge switch are connected in series, wherein the second discharge switch is connected between the positive pole of the power supply and the discharge resistor, and the first discharge switch is connected between the discharge resistor and the negative pole of the power supply.

[0028] Optionally, the discharge circuit further includes a capacitor connected to both ends of the power supply.

[0029] Optionally, the number of the first discharge switch is set to at least one.

[0030] Optionally, the number of the second discharge switch is set to at least one.

[0031] The vehicle discharge control method, storage medium, and vehicle provided in the embodiments of the present application are configured such that, upon detecting a vehicle collision, the vehicle discharge control method first controls the high-voltage water heater to stop operating and then utilizes the high-voltage water heater's discharge circuit to actively discharge the high voltage after the vehicle collision, thereby reducing the voltage of the vehicle after the collision to below a voltage threshold. With this configuration, the present application utilizes the high-voltage water heater's discharge circuit for active discharge, reducing the voltage of the vehicle after the collision to below a voltage threshold, thereby reducing safety risks and eliminating the need for a dedicated active discharge circuit, thereby reducing costs. BRIEF DESCRIPTION OF THE DRAWINGS

[0032] Figure 1 This is a flowchart of one embodiment of the vehicle active discharging method of the present application.

[0033] Figure 2 Shown Figure 1 A functional block diagram of an embodiment of a bleed circuit of a high-pressure water heater of a vehicle is shown.

[0034] Figure 3 Shown Figure 1 FIG. 1 is a schematic block diagram of another embodiment of a bleed circuit for a high-pressure water heater in a vehicle.

[0035] Figure 4 Shown Figure 1FIG. 1 is a functional block diagram of another embodiment of a bleed circuit of a high-pressure water heater of a vehicle.

[0036] Figure 5 Shown Figure 1 FIG. 1 is a schematic block diagram of another embodiment of a discharge circuit of a high-pressure water heater of a vehicle.

[0037] Figure 6 Shown Figure 1 FIG. 1 is a schematic block diagram of another embodiment of a bleed circuit for a high-pressure water heater in a vehicle.

[0038] Figure 7 Shown Figure 1 FIG. 1 is a schematic block diagram of another embodiment of a discharge circuit of a high-pressure water heater of a vehicle.

[0039] Figure 8 Shown Figure 1 FIG. 1 is a functional block diagram of another embodiment of a bleed circuit of a high-pressure water heater of a vehicle.

[0040] Figure 9 Shown Figure 1 FIG. 1 is a schematic block diagram of another embodiment of a bleed circuit for a high-pressure water heater in a vehicle.

[0041] Figure 10 Shown Figure 1 FIG. 1 is a schematic block diagram of another embodiment of a discharge circuit of a high-pressure water heater of a vehicle.

[0042] Figure 11 Shown Figure 1 FIG. 1 is a functional block diagram of another embodiment of a bleed circuit of a high-pressure water heater of a vehicle.

[0043] Figure 12 Shown is a flowchart of the steps of an embodiment of the vehicle discharge control method of the present application.

[0044] Figure 13 Shown Figure 12 A flow chart of steps of another embodiment of a vehicle discharge control method is shown.

[0045] Figure 14 Shown Figure 12 A flowchart of another embodiment of a vehicle discharge control method is shown.

[0046] Figure 15 Shown is a schematic diagram of an embodiment of a vehicle discharge control system of the present application. DETAILED DESCRIPTION

[0047] Exemplary embodiments will be described in detail herein, with examples illustrated in the accompanying drawings. In the following description, when referring to the drawings, identical numerals in different figures represent identical or similar elements unless otherwise indicated. The embodiments described in the following exemplary embodiments are not intended to represent all embodiments consistent with the present application. Rather, they are merely examples of devices consistent with certain aspects of the present application, as detailed in the appended claims.

[0048] The terms used in this application are for the purpose of describing specific embodiments only and are not intended to limit this application. Unless otherwise defined, technical or scientific terms used in this application should have the ordinary meaning understood by a person of ordinary skill in the art to which this application belongs. The terms "first," "second," and similar words used in this specification and claims do not denote any order, quantity, or importance, but are simply used to distinguish different components. Similarly, terms such as "a" or "an" do not denote a quantitative limitation, but rather indicate the presence of at least one. If only "a" is referred to, this will be separately stated. "Multiple" or "several" means two or more. Unless otherwise indicated, terms such as "front," "rear," "lower," and / or "upper" are for convenience only and are not limited to a single position or spatial orientation. Terms such as "include" or "comprising" mean that the elements or objects listed before "include" or "comprising" include the elements or objects listed after "include" or "comprising" and their equivalents, and do not exclude other elements or objects. "Connected" or "connected" and similar words are not limited to physical or mechanical connections, but can also include electrical connections, whether direct or indirect. As used in this specification and the appended claims, the singular forms "a," "the," and "the" are intended to include the plural forms, unless the context clearly indicates otherwise. It should also be understood that the term "and / or" as used herein refers to and encompasses any and all possible combinations of one or more of the associated listed items.

[0049] The present application provides a vehicle discharge control method, storage medium, and vehicle. The vehicle includes a high-pressure water heater, which includes a discharge circuit. The vehicle discharge control method includes: detecting whether the vehicle has been involved in a collision; if a collision is detected, controlling the high-pressure water heater to stop operating; after the high-pressure water heater stops operating, controlling the discharge circuit to actively discharge the water, thereby reducing the voltage of the vehicle after the collision to below a voltage threshold.

[0050] The vehicle discharge control method, storage medium, and vehicle provided in the embodiments of the present application are configured such that, upon detecting a vehicle collision, the vehicle discharge control method first controls the high-voltage water heater to stop operating and then utilizes the high-voltage water heater's discharge circuit to actively discharge the high voltage after the vehicle collision, thereby reducing the voltage of the vehicle after the collision to below a voltage threshold. With this configuration, the present application utilizes the high-voltage water heater's discharge circuit for active discharge, reducing the voltage of the vehicle after the collision to below a voltage threshold, thereby reducing safety risks and eliminating the need for a dedicated active discharge circuit, thereby reducing costs.

[0051] The vehicle discharge control method, storage medium and vehicle of the present application are described in detail below with reference to the accompanying drawings. In the absence of conflict, the features of the following embodiments and implementations can be combined with each other.

[0052] Figure 1 The figure shows a block diagram of the working principle of an embodiment of the vehicle 1 of the present application. Figure 1 As shown, the vehicle 1 includes a high-pressure water heater 10 and an on-board controller 20. The high-pressure water heater 10 is used to realize the thermal management and battery heating functions of the vehicle 1. The on-board controller 20 is used to control the operation of the vehicle 1. In this embodiment, the high-pressure water heater 10 includes a discharge circuit 11. The on-board controller 20 is connected to the discharge circuit 11. The on-board controller 20 is used to control the high-pressure water heater 10 to stop working when it detects that the vehicle 1 has collided, and after controlling the high-pressure water heater 10 to stop working, control the discharge circuit 11 to actively discharge, so that the voltage of the vehicle 1 after the collision is reduced to below the voltage threshold. In this embodiment, the voltage threshold can be 60V. When the vehicle 1 collides, high voltage will be generated. The present application uses the discharge circuit 11 of the high-pressure water heater 10 to actively discharge, so that the voltage of the vehicle 1 is reduced to below 60V, thereby reducing risks. With such a configuration, the present application utilizes the discharge circuit 11 of the high-pressure water heater 10 for active discharge, so that the voltage of the vehicle 1 after a collision is reduced to below 60V, thereby reducing safety risks. Under the collision condition of the vehicle 1, the high-pressure water heater 10 realizes the active discharge function, and there is no need to set up a special active discharge circuit in the vehicle 1, thereby reducing costs.

[0053] exist Figure 1 In the embodiment shown, the high pressure water heater 10 further includes a power supply 12 and a capacitor 13. The discharge circuit 11 is connected to both ends of the power supply 12. The capacitor 13 is connected to both ends of the power supply 12. Figure 1In the illustrated embodiment, the discharge circuit 11 includes a discharge switch 111 and a discharge resistor 112, which are connected in series across the power supply 12. The onboard controller 20 is connected to the discharge switch 111. After the high-pressure water heater 10 is stopped, the onboard controller 20 is configured to control the discharge switch 111 to conduct, thereby actively discharging the electrical energy generated by a collision of the vehicle 1 by converting it into thermal energy using the discharge resistor 112. In this embodiment, upon detecting a collision of the vehicle 1, the onboard controller 20 controls the high-pressure water heater 10 to stop and simultaneously issues an active discharge command. At this point, the discharge switch 111 is controlled to conduct, connecting the discharge circuit 11 and actively discharging the electrical energy by converting it into thermal energy using the discharge resistor 112. This configuration eliminates the need for a dedicated active discharge circuit within the vehicle 1, reducing costs.

[0054] In some embodiments, the discharge circuit 11 includes at least one discharge switch 111 and at least one discharge resistor 112. The on-board controller 20 is used to control the at least one discharge switch 111 to be turned on after the high-pressure water heater 10 is controlled to stop working, so as to use at least one discharge resistor 112 to convert the electrical energy of the vehicle 1 when a collision occurs into heat energy for active discharge. In some embodiments, the discharge circuit 11 includes one or more discharge switches 111 and one or more discharge resistors 112. The on-board controller 20 is used to control the at least one discharge switch 111 to be turned on after the high-pressure water heater 10 is controlled to stop working, so as to use one or more discharge resistors 112 to convert the electrical energy of the vehicle 1 when a collision occurs into heat energy for active discharge. In this application, the number of discharge switches 111 and discharge resistors 112 is not limited and can be set according to actual needs.

[0055] In this embodiment, the discharge switch 111 may be an IGBT (Insulated Gate Bipolar Transistor). An IGBT is a composite, fully controlled, voltage-driven power semiconductor device consisting of a bipolar transistor and an insulated gate field-effect transistor. It functions as a switch that is turned on or off by a high or low level control circuit. IGBTs offer high power and high voltage capabilities, as well as low power consumption and fast response.

[0056] Figure 2 Shown Figure 1 FIG. 1 is a schematic block diagram of an embodiment of a discharge circuit 11 of a high-pressure water heater 10 of a vehicle 1. Figure 2As shown, the discharge switch 111 includes a first discharge switch 111a. The power supply 12, the discharge resistor 112, and the first discharge switch 111a are connected in series. The first discharge switch 111a is connected between the discharge resistor 112 and the negative terminal of the power supply 12. In this embodiment, only one first discharge switch 111a is provided, which can be a low-side IGBT switch. When the vehicle 1 is in a collision condition, the low-side IGBT switch is turned on in response to the active discharge control signal issued by the onboard controller 20, connecting the discharge circuit 11 and enabling active discharge from the discharge resistor 112. When the vehicle 1 is in normal operating conditions, the low-side IGBT switch can adjust the power required by the thermal management controller of the high-voltage water heater based on the PWM (Pulse Width Modulation) duty cycle required by the vehicle 1. After active discharge is completed, the low-side IGBT switch is controlled to be turned off.

[0057] In some embodiments, the number of the first discharge switch 111a is set to at least one. In some embodiments, the number of the first discharge switch 111a can be one or more. Figure 2 In the illustrated embodiment, the number of the first discharge switch 111 a is one, and the number of the discharge resistor 112 is one.

[0058] Figure 3 Shown Figure 1 A functional block diagram of another embodiment of a discharge circuit 11 of a high-pressure water heater 10 of a vehicle 1 is shown. Figure 3 The embodiment shown is Figure 2 The embodiment shown is similar, with the main difference being that the number of bleeder resistors 112 is set to more than one, for example, two. In this embodiment, two bleeder resistors 112 are used to convert the electrical energy after the vehicle 1 crashes into heat energy for discharge. By increasing the number of bleeder resistors 112, the discharge time is reduced, thereby reducing the risk of high voltage.

[0059] Figure 4 Shown Figure 1 A functional block diagram of another embodiment of the discharge circuit 11 of the high-pressure water heater 10 of the vehicle 1 is shown. Figure 4 The embodiment shown is Figure 3 The embodiment shown is similar, with the main difference being that the number of first discharge switches 111a is set to one or more, for example, two. In this embodiment, two first discharge switches 111a are provided, one of which is primarily used to control the on / off state of the discharge circuit 11, while the other first discharge switch 111a can serve as a redundant protection design. In the event of a failure of one first discharge switch, the discharge circuit 11 can be connected by controlling the other first discharge switch 111a. This ensures that active discharge can be smoothly achieved in the event of a collision of the vehicle 1, reducing safety risks.

[0060] Figure 5 Shown Figure 1 The schematic block diagram of another embodiment of the discharge circuit 11 of the high-pressure water heater 10 of the vehicle 1 is shown. Figure 5 The embodiment shown is Figure 2 The embodiment shown is similar, the main difference is that Figure 5 In the illustrated embodiment, the discharge switch 111 also includes a second discharge switch 111b. The power supply 12, the second discharge switch 111b, the discharge resistor 112, and the first discharge switch 111a are connected in series. The second discharge switch 111b is connected between the positive terminal of the power supply 12 and the discharge resistor 112, while the first discharge switch 111a is connected between the discharge resistor 112 and the negative terminal of the power supply 12. In this embodiment, only one second discharge switch 111b is provided, which can be a high-side IGBT switch. When the vehicle 1 is in a collision condition, the high-side IGBT switch and the low-side IGBT switch are turned on in response to the active discharge control signal issued by the onboard controller 20, connecting the discharge circuit 11 and enabling active discharge of the discharge resistor 112. When the vehicle 1 is in normal operating conditions, the high-side IGBT switch remains on. After active discharge is completed, both the high-side IGBT switch and the low-side IGBT switch are turned off.

[0061] In some embodiments, the number of the second discharge switch 111b is set to at least one. In some embodiments, the number of the second discharge switch 111b is set to one or more. Figure 5 In the illustrated embodiment, one second discharge switch 111 b is provided, one first discharge switch 111 a is provided, and one discharge resistor 112 is provided.

[0062] Figure 6 Shown Figure 1 A schematic block diagram of another embodiment of a discharge circuit 11 of a high-pressure water heater 10 of a vehicle 1 is shown. Figure 6 The embodiment shown is Figure 3 The embodiment shown is similar, the main difference is that Figure 6 In the embodiment shown, a second discharge switch 111 b is provided.

[0063] Figure 7 Shown Figure 1 The schematic block diagram of another embodiment of the discharge circuit 11 of the high-pressure water heater 10 of the vehicle 1 is shown. Figure 7 The embodiment shown is Figure 4 The embodiment shown is similar, the main difference is that Figure 7 In the embodiment shown, a second discharge switch 111 b is provided.

[0064] Figure 8 Shown Figure 1A functional block diagram of another embodiment of the discharge circuit 11 of the high-pressure water heater 10 of the vehicle 1 is shown. Figure 8 The embodiment shown is Figure 7 The embodiment shown is similar, the main difference is that Figure 8 In the illustrated embodiment, more than one second discharge switch 111b is provided, for example, two. In this embodiment, by providing two second discharge switches 111b, one second discharge switch 111b is primarily used to maintain connectivity of the discharge circuit 11, while the other second discharge switch 111b can serve as a redundant protection design. In the event of a failure of one second discharge switch 111b, connectivity of the discharge circuit 11 can be maintained by the other second discharge switch 111b. This ensures that active discharge can be smoothly achieved in the event of a collision of the vehicle 1, thereby reducing safety risks.

[0065] In some embodiments, at least one discharge circuit 11 is provided. In some embodiments, one or more discharge circuits 11 are provided. Figures 2 to 6 In the embodiment shown, one discharge circuit 11 is provided, and at least one first discharge switch 111a, at least one second discharge switch 111b, and at least one discharge resistor 112 are provided to form a discharge circuit.

[0066] Figure 9 Shown Figure 1 A schematic block diagram of another embodiment of a discharge circuit 11 of a high-pressure water heater 10 of a vehicle 1 is shown. Figure 9 The embodiment shown is Figure 8 The embodiment shown is similar, with the main difference being that two discharge circuits 11 are provided. One discharge circuit 11a includes a first discharge switch 111a, a second discharge switch 111b, and a discharge resistor 112. The other discharge circuit 11b includes a first discharge switch 111a, a second discharge switch 111b, and a discharge resistor 112. This configuration allows for different numbers of discharge circuits 11 to be provided according to actual needs, and for each discharge circuit 11, different numbers of first discharge switches 111a, second discharge switches 111b, and discharge resistors 112 can be flexibly configured, adapting to a wider range of scenarios.

[0067] In some embodiments, the bleeder resistor 112 may be connected in series with the first bleeder switch 111 a in the bleeder circuit 11. In other embodiments, the bleeder resistor 112 may be connected in series with the second bleeder switch 111 b in the bleeder circuit 11.

[0068] Figure 10 Shown Figure 1 The schematic block diagram of another embodiment of the discharge circuit 11 of the high-pressure water heater 10 of the vehicle 1 is shown. Figure 10 The embodiment shown is Figure 9 The embodiment shown is similar, with the main difference being that the bleeder resistor 112 may be connected in series with the first bleeder switch 111 a .

[0069] Figure 11 Shown Figure 1 A functional block diagram of another embodiment of the discharge circuit 11 of the high-pressure water heater 10 of the vehicle 1 is shown. Figure 11 The embodiment shown is Figure 9 The embodiment shown is similar, with the main difference being that the bleeder resistor 112 may be connected in series with the second bleeder switch 111 b .

[0070] exist Figures 5 to 11 In the embodiment shown, the first discharge switch 111a and the second discharge switch 111b are both in the on state, and the first discharge switch 111a adjusts the duty cycle of the PWM according to the requirements of the vehicle to achieve the power required by the thermal management controller.

[0071] Table 1 is used to show the on-off status of the first discharge switch 111a and the second discharge switch 111b

[0072] At least one second discharge switch 111b At least one first discharge switch 111a Before active discharge ON PWM modulation, ON or OFF Active discharge ON ON After active discharge OFF OFF

[0073] As shown in Table 1, before active discharge (i.e., before a collision occurs with vehicle 1), first discharge switch 111a adjusts the power required by the thermal management controller of high-pressure water heater 10 based on the vehicle's required PWM duty cycle. Second discharge switch 111b remains normally on. During active discharge when vehicle 1 is involved in a collision, all first discharge switches 111a are switched to an on state. After discharge, both first and second discharge switches 111a, 111b, are controlled to an off state.

[0074] It should be noted that one or more first discharge switches 111a and second discharge switches 111b are provided, and their corresponding switching states are synchronized. Providing multiple discharge switches serves as a double insurance policy, ensuring that active discharge can be successfully implemented in the event of a collision, reducing the voltage of vehicle 1 after the collision to below the voltage threshold. This will not be further elaborated here.

[0075] Figure 12 The figure shows a flow chart of steps of an embodiment of the vehicle discharge control method of the present application. Figures 1 to 12 As shown, the vehicle discharge control method includes steps S1 to S2.

[0076] Step S1: Detect whether vehicle 1 has been involved in a collision. A collision may cause vehicle 1 to tilt or generate high voltage. In this embodiment, an inertial measurement unit (IMU) or other voltage detector within vehicle 1 can be used to detect whether vehicle 1 has been involved in a collision. In step S1, if it is detected that vehicle 1 has not been involved in a collision, the high-pressure water heater 10 is controlled to operate normally. In step S1, if it is detected that vehicle 1 has been involved in a collision, the high-pressure water heater 10 is controlled to stop operating. In this embodiment, the vehicle controller 20 can be used to control the high-pressure water heater 10 to stop operating.

[0077] Step S2: After the high-pressure water heater 10 stops operating, the discharge circuit 11 is controlled to perform active discharge, reducing the voltage of the vehicle after the collision to below a voltage threshold. In this embodiment, the voltage threshold can be set to 60V. The vehicle controller 20 can be used to control the discharge circuit 11 to perform active discharge, reducing the voltage of the vehicle after the collision to below 60V.

[0078] The vehicle discharge control method of this embodiment can utilize the discharge circuit 11 of the high-pressure water heater 10 to actively discharge the high voltage of the vehicle 1 after a collision. There is no need to set up a special active discharge circuit in the vehicle 1, thereby reducing costs and safety risks.

[0079] In step S2, the discharge switch 111 is controlled to be turned on so that the discharge resistor 112 can be used to convert the electrical energy of the vehicle 1 into heat energy for active discharge when the vehicle 1 collides. In this embodiment, when the vehicle 1 encounters a collision, short circuit, etc., the three-electric system uses capacitors to generate electricity or uses energy storage devices to store electrical energy, and high voltage still exists inside. When the on-board controller 20 detects that the vehicle 1 has collided, it will control the high-pressure water heater 10 to stop working and simultaneously issue an active discharge instruction. At this time, the discharge switch 111 is controlled to be turned on, so that the discharge circuit 11 is connected, and the discharge resistor 112 is used to convert electrical energy into heat energy for active discharge. This reduces the risk of high voltage and does not require a dedicated active discharge circuit in the vehicle 1, thereby reducing costs.

[0080] When multiple discharge circuits 11 are provided within the high-pressure water heater 10, during step S2, some or all of the multiple discharge circuits 11 are controlled to perform active discharge. This configuration allows the discharge switches 111 in some of the multiple discharge circuits 11 to operate in rotation, extending their lifespan. Alternatively, depending on actual voltage requirements, different numbers of discharge switches 111 can be selected for active discharge using different numbers of discharge resistors 112, thereby improving discharge efficiency and duration.

[0081] Figure 13 Shown Figure 12 FIG1 is a flow chart showing another embodiment of a vehicle discharge control method. Figure 12 and Figure 13 As shown, the vehicle discharge control method further includes step S3. Step S3 is executed after step S2.

[0082] Step S3, detect whether the voltage of vehicle 1 after the collision is lower than the voltage threshold. In this embodiment, the voltage detection circuit provided in vehicle 1 can be used to detect whether the voltage of vehicle 1 after the collision is lower than 60V. In step S3, if it is detected that the voltage of vehicle 1 after the collision is not lower than the voltage threshold, the discharge circuit 11 is controlled to keep discharging. In step S3, if it is detected that the voltage of vehicle 1 after the collision is lower than the voltage threshold, the discharge circuit 11 is controlled to stop discharging. In this embodiment, if it is detected that the voltage of vehicle 1 after the collision is not lower than 60V, it means that the voltage of vehicle 1 is still relatively high and there is still a high voltage risk. At this time, the discharge switch 111 is controlled to remain on, so that the discharge resistor 112 continues to discharge. If it is detected that the voltage of vehicle 1 after the collision is lower than 60V, it means that vehicle 1 is within the safe voltage range. At this time, the discharge switch 111 is controlled to be disconnected, so that the discharge resistor 112 stops discharging. Such a setting ensures smooth and active discharge and reduces risks.

[0083] After a collision, the energy stored in vehicle 1 takes a period of time to be consumed or discharged before it reaches the voltage threshold or falls below the voltage threshold range. Active discharge within the set time period can ensure the safety of vehicle 1.

[0084] Figure 14 Shown Figure 12 FIG. 1 is a flow chart showing another embodiment of a vehicle discharge control method. Figure 12 and Figure 14 As shown, the vehicle discharge control method further includes step S4. Step S4 is executed after step S2.

[0085] Step S4: Detect whether the voltage of vehicle 1 after the collision is lower than the voltage threshold, and detect whether the discharge time of discharge circuit 11 is within a preset period. In this embodiment, during the active discharge process, a timer can be provided in vehicle 1 to record the duration of time the high voltage of vehicle 1 after the collision drops below 60V. The onboard controller 20 determines whether the discharge time of discharge circuit 11 is within the preset period based on the recorded duration.

[0086] In step S4, if it is detected that the voltage of the vehicle 1 after the collision is lower than the voltage threshold, and the discharge time of the discharge circuit 11 is detected to be within the preset time period, the discharge circuit 11 is controlled to stop discharging. In this embodiment, if it is detected that the voltage of the vehicle 1 after the collision is lower than 60V, it means that the vehicle 1 has reached the safe voltage, and if it is detected that the discharge time of the discharge resistor 112 is within 5s, the discharge switch 111 is controlled to be disconnected, so that the discharge resistor 112 stops discharging. According to the formula 1 / 2CU for the energy stored in the vehicle 12 It can be seen that the discharge time can be determined according to the capacitance and voltage. In this embodiment, the high voltage of the vehicle 1 after the collision must be discharged to below 60V within 5 seconds to ensure the safety of the vehicle 1.

[0087] In step S4, if the voltage of vehicle 1 is detected to be below the voltage threshold, or if the discharge time of discharge circuit 11 exceeds a preset period, the passive discharge circuit is controlled to perform passive discharge. In this embodiment, if the voltage of vehicle 1 is detected to be below 60V, indicating that the voltage of vehicle 1 is high and a high voltage risk exists, or if the discharge time of discharge circuit 11 exceeds 5 seconds, indicating that active discharge has failed, the passive discharge circuit is controlled to perform passive discharge. The passive discharge circuit is pre-installed in vehicle 1 and connected to the onboard controller 20. If active discharge fails, passive discharge is performed by controlling the onboard controller 20 to ensure that the high voltage of vehicle 1 after a collision is discharged to below 60V within 5 seconds, thereby ensuring the safety of vehicle 1.

[0088] It should be noted that the voltage threshold and preset discharge time in this embodiment are set in accordance with national safety standards. Figures 12 to 14 The vehicle discharge control method shown in the embodiment can be combined with Figures 1 to 11 The different discharge circuits 11 shown in the embodiment can be used in combination to reduce the high pressure risk, which will not be described in detail here.

[0089] The present application provides a computer-readable storage medium having a program stored thereon, which, when executed by a processor, implements the above Figures 12 to 14 The vehicle discharge control method of the embodiment shown. In some embodiments, the computer-readable storage medium may be an internal storage unit of the aforementioned vehicle, such as a hard disk or memory. The computer-readable storage medium may also be an external storage device of the vehicle, such as a plug-in hard disk, a smart memory card (Smart Media Card, SMC), an SD card, a flash card (Flash Card), etc. equipped on the device. Furthermore, the computer-readable storage medium may also include both an internal storage unit of the vehicle and an external storage device. The computer-readable storage medium is used to store computer programs and other programs and data required by the vehicle, and may also be used to temporarily store data that has been output or is to be output. From a hardware perspective, such as Figure 15 As shown, it is a hardware structure diagram of the vehicle discharge control system of the vehicle where the processor of this application is located, except Figure 15 In addition to the processor, memory, network interface, and non-volatile memory shown, the vehicle in which the vehicle discharge control system is located in the embodiment may also include other hardware according to the actual functions of the vehicle, which will not be described in detail.

[0090] like Figure 15As shown, the present application also provides a vehicle discharge control system, comprising: one or more processors for implementing a vehicle discharge control method as in any one of the above embodiments. For the system embodiments, they basically correspond to the method embodiments, so for relevant details, please refer to the partial description of the method embodiments. The system embodiments described above are merely schematic, wherein the units described as separate components may or may not be physically separated, and the components displayed as units may or may not be physical units, that is, they may be located in one place, or they may be distributed to multiple network units. Some or all of the units may be selected according to actual needs to achieve the purpose of the present application scheme. Those skilled in the art can understand and implement it without paying any creative work.

[0091] The above description is only a preferred embodiment of the present application and is not intended to limit the present application. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present application shall be included in the scope of protection of the present application.

Claims

1. A vehicle discharge control method, characterized in that: The vehicle includes a high-pressure water heater, and the high-pressure water heater includes a discharge circuit; the vehicle discharge control method includes: Detecting whether a vehicle has collided; if a collision is detected, controlling the high-pressure water heater to stop working; and After the high-pressure water heater stops working, the discharge circuit is controlled to perform active discharge, so that the voltage of the vehicle after the collision is reduced to below the voltage threshold.

2. The vehicle discharge control method according to claim 1, characterized in that: The discharge circuit includes a discharge switch and a discharge resistor; after the high-pressure water heater stops working, the discharge circuit is controlled to perform active discharge so that the voltage of the vehicle after the collision is reduced to below the voltage threshold, including: The discharge switch is controlled to be turned on, so as to utilize the discharge resistor to convert the electrical energy when the vehicle collides into heat energy for active discharge.

3. The vehicle discharge control method according to claim 1 or 2, characterized in that: The vehicle discharge control method further includes: Detecting whether the voltage of the vehicle after the collision is lower than the voltage threshold; If it is detected that the voltage of the vehicle after the collision is not lower than the voltage threshold, controlling the discharge circuit to keep discharging; If it is detected that the voltage of the vehicle after the collision is lower than the voltage threshold, the discharge circuit is controlled to stop discharging.

4. The vehicle discharge control method according to claim 1 or 2, characterized in that: The vehicle further includes a passive discharge circuit; and the vehicle discharge control method further includes: Detecting whether the voltage of the vehicle after the collision is lower than the voltage threshold, and detecting whether the discharge time of the discharge circuit is within a preset time period; If it is detected that the voltage of the vehicle after the collision is lower than the voltage threshold, and it is detected that the discharge time of the discharge circuit does not exceed the preset period, the discharge circuit is controlled to stop discharging; If it is detected that the voltage of the vehicle after the collision is not lower than the voltage threshold, or if it is detected that the discharge time of the discharge circuit exceeds the preset period, the passive discharge circuit is controlled to perform passive discharge.

5. The vehicle discharge control method according to claim 1, characterized in that: The high-pressure water heater includes a plurality of discharge circuits; after the high-pressure water heater stops working, the discharge circuits are controlled to perform active discharge so that the voltage of the vehicle after the collision is reduced to below the voltage threshold, including: Part or all of the plurality of bleeding circuits are controlled to perform active bleeding.

6. A computer-readable storage medium, characterized in that: A program is stored thereon, and when the program is executed by a processor, the vehicle discharge control method according to any one of claims 1 to 5 is implemented.

7. A vehicle, characterized in that: include: High pressure water heaters, including discharge circuits; and The on-board controller is connected to the discharge circuit. The on-board controller is used to control the high-pressure water heater to stop working when a collision of the vehicle is detected. After controlling the high-pressure water heater to stop working, the discharge circuit is controlled to perform active discharge so that the voltage of the vehicle after the collision is reduced to below the voltage threshold.

8. The vehicle according to claim 7, characterized in that The high-pressure water heater includes a power supply; the discharge circuit includes a discharge switch and a discharge resistor, and the discharge switch and the discharge resistor are connected in series at both ends of the power supply; the vehicle-mounted controller is connected to the discharge switch, and the vehicle-mounted controller is used to control the discharge switch to be turned on after controlling the high-pressure water heater to stop working, so as to use the discharge resistor to convert the electrical energy of the vehicle into heat energy for active discharge when a collision occurs.

9. The vehicle according to claim 8, characterized in that The discharge circuit includes at least one discharge switch and at least one discharge resistor; the on-board controller is used to control the at least one discharge switch to be turned on after controlling the high-pressure water heater to stop working, so as to use the at least one discharge resistor to convert the electrical energy when the vehicle collides into heat energy for active discharge.

10. The vehicle according to claim 8, characterized in that The discharge switch includes a first discharge switch, the power supply, the discharge resistor and the first discharge switch are connected in series, wherein the first discharge switch is connected between the discharge resistor and the negative electrode of the power supply.

11. The vehicle according to claim 10, characterized in that The discharge switch also includes a second discharge switch, and the power supply, the second discharge switch, the discharge resistor and the first discharge switch are connected in series, wherein the second discharge switch is connected between the positive electrode of the power supply and the discharge resistor, and the first discharge switch is connected between the discharge resistor and the negative electrode of the power supply.

12. The vehicle according to claim 11, characterized in that The discharge circuit further includes a capacitor connected to both ends of the power supply; and / or The number of the first discharge switch is set to at least one; and / or The number of the second discharge switch is set to at least one.

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