Vehicle operation method, device, system, computer equipment and vehicle

Abstract

The present application relates to a vehicle operation method, device, system, computer equipment and vehicle, which can monitor the vehicle operation status and power battery operation status in real time. When it is detected that the vehicle is in the driving state and the power battery has an abnormality, the power battery can be controlled to reduce power operation and maintain the power battery to supply power to the electric drive components. Finally, after the vehicle completes braking and stops, the power battery is cooled by the vehicle's thermal management component. This solution can reduce the output power of the power battery when an abnormality occurs during vehicle driving. While achieving braking and stopping, alleviating rear-end collisions, it can also reduce the possibility of high-voltage arcing inside abnormal battery cells. When the vehicle completes braking and stops, the power battery continues to be cooled by the vehicle's thermal management component to reduce the possibility of abnormality spreading. In this way, the safety of the entire vehicle when an abnormality occurs in the power battery can be greatly improved.

Description

Technical Field

[0001] The present application relates to the field of new energy technology, and in particular to a vehicle operation method, apparatus, system, computer equipment, storage medium, computer program product, and vehicle. Background Art

[0002] With the rapid development of new energy technologies, new energy vehicles, represented by electric cars, electric motorcycles, and electric bicycles, are becoming increasingly common in daily life, bringing great convenience to people's daily travel. New energy vehicles are powered by power batteries, which generally consist of multiple cells connected in series and / or parallel.

[0003] However, in related technologies, power batteries are prone to abnormal phenomena such as thermal runaway of battery cells, which seriously affect the safety of the entire vehicle. Summary of the Invention

[0004] Based on this, it is necessary to provide a vehicle operation method, device, system, computer equipment, storage medium, computer program product and vehicle to alleviate the phenomenon that when the power battery has an abnormality, it affects the safety of the entire vehicle.

[0005] The present application provides a vehicle operation method, comprising: monitoring the vehicle operation status and the power battery operation status; when the vehicle is in a driving state and an abnormality occurs in the power battery, controlling the power battery to reduce the output power operation and maintaining the power battery to supply power to the vehicle's electric drive components; and when the vehicle completes braking and stops, controlling the operation of the vehicle's thermal management components.

[0006] The above-mentioned vehicle operation method can monitor the vehicle's operating status and the power battery's operating status in real time. When it is detected that the vehicle is in the driving state and an abnormality occurs in the power battery, the power battery can be controlled to reduce power operation while maintaining power supply to the electric drive components. Finally, after the vehicle completes braking and stops, the power battery is cooled by the vehicle's thermal management component. This solution can reduce the output power of the power battery when an abnormality occurs during vehicle driving. While achieving braking and stopping, it can also reduce the possibility of high-voltage arcing inside the abnormal battery cell. After the vehicle completes braking and stops, the vehicle's thermal management component continues to cool the power battery, reducing the possibility of the abnormality spreading. In this way, the safety of the entire vehicle can be greatly improved when an abnormality occurs in the power battery.

[0007] In some embodiments, controlling the power battery to reduce output power and maintaining the power battery to supply power to the electric drive components of the vehicle includes: controlling the power battery to reduce output power and obtaining the operating power requirements of the electric drive components of the vehicle; when the output power of the power battery is less than or equal to the operating power requirements, maintaining the power battery to supply power to the electric drive components and controlling the thermal management components of the vehicle to stop operating.

[0008] This solution compares the required power of the electric drive components with the output power of the power battery. When the power battery output is low, it only supplies power to the electric drive components. This allows the electric drive components to be prioritized during abnormal driving conditions, meeting braking requirements and mitigating rear-end collisions.

[0009] In some embodiments, after controlling the power battery to reduce output power and obtaining the operating power requirement of the vehicle's electric drive components, the method further includes: when the output power of the power battery is greater than the operating power requirement, maintaining the power battery to supply power to the electric drive components and controlling the operation of the thermal management component.

[0010] The above solution can simultaneously power the electric drive components and thermal management components when the output power of the power battery is high. While maintaining the operating needs of the entire vehicle, it can also cool the power battery and alleviate the occurrence of thermal runaway.

[0011] In some embodiments, when the vehicle is in driving state and the power battery has an abnormality, controlling the power battery to reduce output power operation includes: when the vehicle is in driving state and the power battery has an abnormality, obtaining the loop electrical parameters of the power battery; when the loop electrical parameters meet the preset power limit start-up conditions, controlling the power battery to reduce output power operation.

[0012] The above solution can verify whether it is necessary to reduce the power of the power battery when an abnormality occurs in the power battery during driving conditions by combining the circuit electrical parameters of the power battery, and has high output power regulation reliability.

[0013] In some embodiments, after monitoring the vehicle operating status and the power battery operating status, the method further includes: when the vehicle is in a parked state and the power battery has an abnormality, controlling the vehicle to power on and controlling the operation of the thermal management component.

[0014] In the above solution, if it is detected that the vehicle is in the parked state and the power battery has an abnormality, the vehicle can be powered on, thereby controlling the power battery to supply power to the thermal management component. While cooling the abnormal battery cell, it can also effectively reduce the risk of the abnormality spreading.

[0015] In some embodiments, controlling the vehicle to power on when the vehicle is in a parked state and the power battery has an abnormality includes: starting a timer when the vehicle is in a parked state and the power battery has an abnormality; and controlling the vehicle to power on when the timer reaches a preset time length.

[0016] The above solution controls the vehicle to be powered on after a preset time when an abnormality in the parking state is detected, which can reduce the operational risk of the vehicle being powered on to a certain extent.

[0017] In some embodiments, when the vehicle is in a parked state and an abnormality occurs in the power battery, after controlling the vehicle to power on and controlling the thermal management component to operate, the method further includes: obtaining loop electrical parameters of the power battery; when the loop electrical parameters meet preset power limit start-up conditions, controlling the power battery to reduce output power operation.

[0018] The above solution can verify whether it is necessary to reduce the power of the power battery when an abnormality occurs in the power battery during parking conditions by combining the circuit electrical parameters of the power battery, thereby having high output power regulation reliability.

[0019] In some embodiments, the loop electrical parameter includes a loop current, and the method further includes: when the loop current is greater than or equal to a preset current threshold, determining that the loop electrical parameter meets a preset power limit start condition.

[0020] The above solution combines the loop current of the power battery to verify whether it is necessary to start the power-limited operation, and has a high accuracy in starting the power-reduced operation.

[0021] In some embodiments, controlling the power battery to operate at a reduced output power includes: controlling a resistive load of a safety component to be connected in series to a power supply circuit of the power battery.

[0022] The above solution reduces the output power by controlling the resistive load to be connected to the power supply circuit of the power battery and reducing the circuit current, and has high output power regulation accuracy.

[0023] In some embodiments, when the vehicle is in a parked state and an abnormality occurs in the power battery, the method further includes: reversely waking up the battery management system of the vehicle to issue an abnormality alarm.

[0024] The above solution can reversely wake up the battery management system to issue an abnormality alarm when an abnormality is detected in the parking state, so that the user can respond in time.

[0025] The present application also provides a vehicle operation device, including: a status monitoring module, used to monitor the vehicle operation status and the power battery operation status; a power regulation module, used to control the power battery to reduce the output power operation when the vehicle is in a driving state and the power battery has an abnormality, and maintain the power battery to supply power to the vehicle's electric drive components; a parking control module, used to control the operation of the vehicle's thermal management components when the vehicle completes braking and parking.

[0026] The present application also provides a computer device, comprising a memory and a processor, wherein the memory stores a computer program, and the processor implements the steps of the above-mentioned vehicle operation method when executing the computer program.

[0027] The present application also provides a computer-readable storage medium having a computer program stored thereon, which implements the steps of the above-mentioned vehicle operation method when executed by a processor.

[0028] The present application also provides a computer program product, comprising a computer program, which implements the steps of the above-mentioned vehicle operation method when executed by a processor.

[0029] The present application also provides a vehicle operation system, comprising: a power battery, a battery management system, an electric drive component, a safety component and a controller, wherein the power battery comprises a first output pole, a second output pole and a plurality of battery cells, wherein a first end formed by connecting a plurality of battery cells in series and / or in parallel is connected to the first output pole, and a second end formed by connecting a plurality of battery cells in series and / or in parallel is connected to the second output pole; the battery management system is used to monitor the operating status of the power battery; the electric drive component is arranged between the first output pole and the second output pole for driving the vehicle; the safety component is arranged between the first output pole and the first end, and the safety component comprises a resistive load and a switching device in parallel; the controller is connected to the battery management system, the electric drive component and the switching device respectively, and the controller is used to implement the steps of the above-mentioned vehicle operation method.

[0030] In some embodiments, the resistive load includes a load with adjustable resistance.

[0031] The present application also provides a vehicle, comprising the above-mentioned vehicle operation system. BRIEF DESCRIPTION OF THE DRAWINGS

[0032] Various other advantages and benefits will become apparent to those skilled in the art upon reading the detailed description of the preferred embodiment below. The accompanying drawings are for illustration purposes only and are not to be considered as limiting the present application. The same reference numerals are used throughout the drawings to represent the same components. In the drawings:

[0033] Figure 1 This is a schematic diagram of the structure of an electric vehicle in some embodiments of the present application;

[0034] Figure 2 This is a flow chart of a vehicle operation method in some embodiments of the present application;

[0035] Figure 3 This is a schematic diagram of the power control process in the driving state in some embodiments of the present application;

[0036] Figure 4 This is a schematic diagram of the power control process in the driving state in some other embodiments of the present application;

[0037] Figure 5 This is a flow chart of a vehicle operation method in some other embodiments of the present application;

[0038] Figure 6 This is a schematic diagram of the parking state operation process in some embodiments of the present application;

[0039] Figure 7 This is a flow chart of a vehicle operation method in some other embodiments of the present application;

[0040] Figure 8 This is a schematic diagram of the structure of a vehicle operating device in some embodiments of the present application;

[0041] Figure 9 This is a schematic structural diagram of a vehicle operating device in some other embodiments of the present application;

[0042] Figure 10 This is a schematic diagram of the internal structure of a computer device in some embodiments of the present application;

[0043] Figure 11 This is a schematic diagram of the vehicle operation system structure in some embodiments of the present application. DETAILED DESCRIPTION

[0044] The following embodiments of the technical solution of the present application will be described in detail with reference to the accompanying drawings. The following embodiments are only used to more clearly illustrate the technical solution of the present application and are therefore only examples and are not intended to limit the scope of protection of the present application.

[0045] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by those skilled in the art to which this application belongs; the terms used herein are only for the purpose of describing specific embodiments and are not intended to limit this application; the terms "including" and "having" and any variations thereof in the specification and claims of this application and the above-mentioned figure descriptions are intended to cover non-exclusive inclusions.

[0046] In the description of the embodiments of this application, the technical terms "first" and "second" are used only to distinguish different objects and should not be understood to indicate or imply relative importance or implicitly specify the quantity, specific order, or primary and secondary relationship of the indicated technical features. In the description of the embodiments of this application, the meaning of "plurality" is more than two, unless otherwise clearly and specifically defined.

[0047] References herein to "embodiments" mean that a particular feature, structure, or characteristic described in connection with the embodiments may be included in at least one embodiment of the present application. The appearance of this phrase in various places in the specification does not necessarily refer to the same embodiment, nor does it constitute an independent or alternative embodiment that is mutually exclusive of other embodiments. It is understood, both explicitly and implicitly, by those skilled in the art that the embodiments described herein may be combined with other embodiments.

[0048] In the description of the embodiments of this application, the term "and / or" is simply a description of the association relationship between associated objects, indicating that three relationships can exist. For example, A and / or B can represent the following three situations: A exists alone, A and B exist simultaneously, and B exists alone. In addition, the character " / " in this document generally indicates that the associated objects are in an "or" relationship.

[0049] In the description of the embodiments of the present application, the term "multiple" refers to more than two (including two). Similarly, "multiple groups" refers to more than two groups (including two groups), and "multiple pieces" refers to more than two pieces (including two pieces).

[0050] In the description of the embodiments of the present application, unless otherwise expressly specified or limited, technical terms such as "installed," "connected," "connected," and "fixed" should be understood in a broad sense. For example, they can refer to fixed connections, detachable connections, or integration; mechanical connections or electrical connections; direct connections or indirect connections through an intermediate medium; internal connections between two components or interactions between two components. Those skilled in the art can understand the specific meanings of the above terms in the embodiments of the present application based on specific circumstances.

[0051] Currently, market developments indicate that power batteries are becoming increasingly widely used. Power batteries are not only used in energy storage systems such as hydropower, thermal, wind, and solar power plants, but are also widely used in electric vehicles such as electric bicycles, electric motorcycles, and electric cars, as well as in military equipment and aerospace. As power battery applications continue to expand, market demand is also growing.

[0052] For electric vehicles, if the vehicle immediately shuts off the power (referring to the strong current output by the power battery) after identifying abnormal conditions such as thermal runaway of the battery cell or imminent thermal runaway, the following problems will arise: (1) If an abnormality occurs during high-speed driving, the user needs to drive to the roadside to stop, but the vehicle will have no power after shutting down, and there will be a risk of rear-end collision; (2) The vehicle's thermal management components have a significant effect on alleviating heat diffusion through water circulation and other heat dissipation methods, but after the vehicle is shut down, the thermal management components will also stop running. Even if weak current is used to power the thermal management components, it is difficult to support long-term heat dissipation.

[0053] If the vehicle detects an abnormality and does not take power-off measures, it will further cause the following problems: When the battery cells in the power battery experience thermal runaway, the internal circuit of the thermal runaway battery cells will be disconnected, and the high voltage of the entire power battery pack will be applied to the thermal runaway battery cells, forming a reverse voltage. The arcing energy is very high, which can easily cause the thermal runaway battery cells to be broken down, causing serious secondary disasters.

[0054] To alleviate this problem, in-depth research has revealed that it is possible to limit the output power of the power battery when an anomaly occurs, ensuring that the entire battery pack continues to power the vehicle even when the anomaly occurs. This allows the vehicle to continue driving and brake to a stop even when the power battery is in an abnormal state, while also providing power to the vehicle's thermal management components, significantly mitigating the spread of the anomaly.

[0055] Based on the above considerations, the present application provides a vehicle operation method that can monitor the vehicle operation status and the power battery operation status in real time. When it is detected that the vehicle is in driving state and the power battery has an abnormality, the power battery can be controlled to reduce power operation and maintain the power battery to supply power to the electric drive components. Finally, after the vehicle completes braking and stops, the power battery is cooled through the vehicle's thermal management components.

[0056] This solution reduces the power battery's output power when an anomaly occurs during vehicle operation, effectively stopping the vehicle and mitigating rear-end collisions while also reducing the possibility of high-voltage arcing within the affected battery cell. Once the vehicle has stopped, the thermal management components continue to cool the power battery, reducing the likelihood of the anomaly spreading. This significantly improves vehicle safety in the event of a power battery anomaly.

[0057] The vehicle operation method of the embodiments of the present application is applied to an electric vehicle powered by a power battery. Specifically, it is applied to an electric vehicle equipped with a thermal management component to cool the power battery. It should be noted that the type of electric vehicle is not limited to an electric vehicle, and can be an electric vehicle, an electric motorcycle, or an electric bicycle, etc., without specific limitation. To facilitate understanding of the technical solution of the present application, the following embodiments can be understood as the vehicle operation method applied to an electric vehicle.

[0058] See also Figure 1 , Figure 1 Schematic diagram of the structure of an electric vehicle provided for some embodiments of the present application. The electric vehicle can be a pure electric vehicle, a hybrid electric vehicle, an extended-range electric vehicle, etc. A power battery 100 is provided inside the electric vehicle, and the power battery 100 can be provided at the bottom, head, or tail of the electric vehicle. The power battery 100 can be used to power the electric vehicle. For example, the power battery 100 can serve as an operating power source for the electric vehicle. The electric vehicle can also include a controller 200 and an electric drive component 300. The controller 200 is used to control the power battery 100 to power the electric drive component 300, for example, to meet the power requirements of the electric vehicle during startup, navigation, and driving.

[0059] See also Figure 2 , the present application provides a vehicle operation method, including step 202, step 204 and step 206.

[0060] Step 202: Monitor the vehicle operating status and the power battery operating status.

[0061] Specifically, the vehicle operating status refers to the status related to vehicle driving, including but not limited to whether the vehicle is in driving state and whether the driving state is normal. The battery operating status refers to the status related to the operation of the power battery in the vehicle, including but not limited to normal operation, short circuit, open circuit, overcharge, overdischarge, battery cell thermal runaway, etc., which are not specifically limited.

[0062] It should be pointed out that there is not only one way to obtain the vehicle's operating status. In one embodiment, it can be achieved by monitoring the vehicle's moving speed, the power supply status of the electric drive components, or the wheel speed; in another embodiment, it can also be achieved by monitoring whether the user sends driving-related instructions to the vehicle, etc., without specific limitation.

[0063] There are many ways to obtain the battery's operating status. In one embodiment, this can be achieved through a battery management system (BMS) associated with the power battery. In this embodiment, the BMS maintains constant communication with the vehicle's controller regardless of the vehicle's state, thereby enabling real-time monitoring of the battery's operating status. In other embodiments, the battery's operating status can also be obtained by analyzing the detection parameters of various sensors in the power battery, although this is not a specific limitation.

[0064] Step 204 : When the vehicle is in driving state and the power battery has an abnormality, the power battery is controlled to reduce output power and maintain power supply to the electric drive components of the vehicle.

[0065] Specifically, the driving state refers to the vehicle's state of motion, which can include traveling at a certain speed or being powered on and waiting in a lane (e.g., waiting for a traffic light). A power battery anomaly refers to thermal runaway or a tendency for the battery to experience thermal runaway, meaning the BMS, after comprehensive analysis, deems the battery to be potentially thermally runaway. To facilitate understanding of the technical solutions of this application, the following embodiments will be understood to refer to thermal runaway. Thermal runaway refers to a phenomenon in which both the current and temperature of at least one cell in a power battery increase, and these conditions mutually reinforce each other. Output power refers to the power output between the first output terminal (e.g., the positive terminal of a battery pack formed by connecting cells in series and / or in parallel) and the second output terminal (e.g., the negative terminal of a battery pack formed by connecting cells in series and / or in parallel). Electric drive components refer to the components of a vehicle powered by the battery and driving the vehicle, including electric motors, without specific limitations.

[0066] When a power battery experiences thermal runaway, if it continues to operate, there will be certain safety risks. These risks are mainly caused by the disconnection of the internal circuit of the runaway cell, the application of the high voltage of the entire power battery pack to the runaway cell, the formation of reverse voltage, the increase of arc energy, and the breakdown of the cell. Therefore, when it is detected that the vehicle is in driving state and the power battery has experienced thermal runaway, it is only necessary to control the power battery to reduce the output power operation to alleviate the above phenomenon. At the same time, in order to reduce the risk of rear-end collisions and other phenomena, it is necessary to maintain the power supply of the vehicle so that the user can park the vehicle in a safe location in this situation. Therefore, when it is detected that the vehicle is in driving state and the power battery has experienced thermal runaway, it is also necessary to prioritize maintaining the power supply to the vehicle's electric drive components.

[0067] It should be noted that there is not only one way to reduce the output power of a power battery. In one embodiment, it can be achieved by reducing the output current of the power battery. In another embodiment, it can also be achieved by reducing the output voltage of the power battery, for example, by short-circuiting or bypassing some battery cells, etc., without specific limitation.

[0068] Step 206 : When the vehicle is braked to a stop, control the vehicle's thermal management components to operate.

[0069] Specifically, brake parking refers to the vehicle coming to a stop under brake control; the vehicle completing brake parking can mean that the vehicle has transitioned from a driving state to a parked state at a roadside, parking space, or other safe location. The thermal management component is a component in the vehicle that is used to manage the temperature of the power battery, including but not limited to preheating and cooling the power battery. Specifically, the structure of the thermal management component will vary depending on the heating method or cooling method, which is not limited here. For ease of understanding, the following embodiments can be understood as a water-cooled thermal management component, that is, the power battery is cooled by water circulation.

[0070] It should be noted that there is no single specific method for controlling the operation of a vehicle's thermal management component. The specific implementation method will vary depending on the current operating state of the thermal management component. If the thermal management component is currently operating, it is sufficient to maintain the thermal management component's operation. If the thermal management component is currently not operating, it is necessary to control the thermal management component to power on and start operating.

[0071] In one embodiment, when the vehicle completes braking and stops, the electric drive components can be powered off, that is, the power battery is controlled to interrupt the power supply to the vehicle's electric drive components; and in order to keep the vehicle's thermal management components running continuously, the entire vehicle needs to be kept powered on so that the power battery can continue to provide electrical energy to the thermal management components. In this way, the occurrence of heat diffusion can be greatly alleviated.

[0072] It is understood that there is no single method for determining whether a vehicle has completed braking and stopping. In one embodiment, after the vehicle has completed braking and stopping, the user may return a parking completion instruction to the controller through a human-computer interface or an additional button, and the controller may recognize that the vehicle has completed braking and stopping based on this instruction. In another embodiment, the controller may monitor the vehicle's operating status in real time and determine whether braking and stopping have been completed based on the vehicle's location, the operating status of the electric drive components, and the wheels, etc., without limitation.

[0073] The above-mentioned vehicle operation method monitors the vehicle's operating status and the power battery's operating status in real time. If the vehicle is detected to be in motion and a power battery anomaly is detected, the power battery can be controlled to reduce power while maintaining power supply to the electric drive components. Finally, after the vehicle is braked to a stop, the vehicle's thermal management components cool the power battery. This solution reduces the power battery's output power when an anomaly occurs while the vehicle is in motion. This reduces the likelihood of high-voltage arcing within the abnormal battery cell while braking to a stop, mitigating rear-end collisions and reducing the possibility of high-voltage arcing within the abnormal cell. After the vehicle is braked to a stop, the vehicle's thermal management components continue to cool the power battery, reducing the possibility of the anomaly spreading. This significantly improves vehicle safety in the event of a power battery anomaly.

[0074] See also Figure 3 In some embodiments, controlling the power battery to reduce output power and maintaining the power battery to supply power to the electric drive components of the vehicle includes step 302 and step 304 .

[0075] Step 302: Control the power battery to reduce output power and obtain the required operating power of the vehicle's electric drive components.

[0076] Step 304 : When the output power of the power battery is less than or equal to the required operating power, the power battery is maintained to supply power to the electric drive components, and the thermal management components of the vehicle are controlled to stop operating.

[0077] Specifically, the operating power requirement refers to the power required to maintain normal and stable operation of the electric drive components. The specific operation method for controlling the vehicle's thermal management components to stop operating is not unique. The specific implementation method will also vary depending on the current operating state of the thermal management components. If the current thermal management component is in the operating state, it is necessary to control the thermal management component to power off and stop operation; if the current thermal management component is in the non-operating state, it is necessary to maintain the current state.

[0078] There is no single method for obtaining the required operating power of the electric drive components. In one embodiment, the required operating power of the electric drive components is fixed for the same type of vehicle. Therefore, the required operating power can be pre-stored in the controller when the vehicle leaves the factory and can be directly called when needed. In another embodiment, the required operating power can also be configured after the vehicle leaves the factory, and the specifics are not limited thereto.

[0079] In this embodiment, when the vehicle is in motion and an abnormality occurs, the required operating power is compared with the reduced power output of the power battery. If the output power is less than or equal to the required operating power, it indicates that the power battery output can only maintain normal operation of the electric drive components, or can only maintain underpowered operation of the electric drive components. To achieve vehicle-to-vehicle braking and reduce the possibility of rear-end collisions, power is prioritized to the vehicle's electric drive components, and the vehicle's thermal management components are temporarily de-energized.

[0080] It should be noted that in one embodiment, the reduced output power of the power battery is adjustable, meaning that the power battery output power can be reduced to a certain level based on actual scenarios. Thus, through the solution of this embodiment, when the vehicle is in motion and a power battery anomaly occurs, the power battery output power can be reduced to a level consistent with the operating power requirements of the electric drive components, enabling normal operation of the electric drive components and improving parking reliability.

[0081] This solution compares the required power of the electric drive components with the output power of the power battery. When the power battery output is low, it only supplies power to the electric drive components. This allows the electric drive components to be prioritized during abnormal driving conditions, meeting braking requirements and mitigating rear-end collisions.

[0082] See also Figure 3 In some embodiments, after step 302 , the method further includes step 306 .

[0083] Step 306 : When the output power of the power battery is greater than the required operating power, the power battery is maintained to supply power to the electric drive component, and the thermal management component is controlled to operate.

[0084] Specifically, in the solution of this embodiment, when comparing the reduced output power of the power battery with the required operating power, if the output power of the power battery is larger at this time and there is still surplus output power while meeting the operating requirements of the electric drive components, the power battery can be controlled to supply power to the electric drive components and the thermal management components at the same time.

[0085] Furthermore, in one embodiment, the reduced output power of the power battery is adjustable. Therefore, in the solution of this embodiment, when the vehicle is in driving state and the power battery has an abnormality, the output power of the power battery can be reduced to just meet the operation of the electric drive components and the thermal management components. The specific setting can be made according to actual needs.

[0086] The above solution can simultaneously power the electric drive components and thermal management components when the output power of the power battery is high. While maintaining the operating needs of the entire vehicle, it can also cool the power battery and alleviate the occurrence of thermal runaway.

[0087] See also Figure 4 In some embodiments, when the vehicle is in driving state and the power battery has an abnormality, the power battery is controlled to reduce output power, including step 402 and step 404.

[0088] Step 402 : When the vehicle is in a driving state and the power battery has an abnormality, obtain loop electrical parameters of the power battery.

[0089] Step 404 : When the circuit electrical parameters meet the preset power limit start condition, the power battery is controlled to operate at a reduced output power.

[0090] Specifically, the circuit electrical parameters refer to the electrical parameters of the charge and discharge circuit of the power battery during charge and discharge operation, including but not limited to current parameters, voltage parameters, power parameters, etc., which are not specifically limited. The preset power limit activation conditions refer to the preset conditions that the circuit electrical parameters must meet when the power battery is operating at reduced power.

[0091] There is no single way to obtain circuit electrical parameters. In one embodiment, the controller may obtain them from various detection devices provided in the power battery's charge and discharge circuit. In another embodiment, the controller may obtain them from a battery management system. The specific method is not limited.

[0092] After obtaining the loop electrical parameters, the controller will check whether the loop electrical parameters meet the preset power limit start conditions. If they meet the conditions, the power battery will be controlled to reduce the output power; if not, the power battery will be maintained at the current output power.

[0093] The above solution can verify whether it is necessary to reduce the power of the power battery when an abnormality occurs in the power battery during driving conditions by combining the circuit electrical parameters of the power battery, and has high output power regulation reliability.

[0094] See also Figure 5 In some embodiments, after step 202 , the method further includes step 502 .

[0095] Step 502 : When the vehicle is parked and the power battery is abnormal, the vehicle is powered on and the thermal management component is controlled to operate.

[0096] Specifically, the parking state is when the vehicle is powered off and the vehicle is in a stopped state. In this case, the operating state of the power battery is still monitored so that a timely response can be made when an abnormality occurs.

[0097] In this embodiment, if the vehicle is parked and an abnormality occurs, the thermal management component will be deactivated due to the power battery being powered off. Therefore, it is necessary to power on the vehicle and control the power battery to supply power to the thermal management component, thereby powering up the thermal management component to cool the power battery and mitigate the spread of thermal runaway.

[0098] In this way, through the solution of this embodiment, the thermal management component can be powered by the strong electricity of the power battery regardless of whether the vehicle is in driving or parking state. Compared with using weak electricity to power the thermal management component, it has better endurance, extends the water circulation time and cooling time of the thermal management component, and reduces the risk of diffusion.

[0099] In the above solution, if it is detected that the vehicle is in the parked state and the power battery has an abnormality, the vehicle can be powered on, thereby controlling the power battery to supply power to the thermal management component. While cooling the abnormal battery cell, it can also effectively reduce the risk of the abnormality spreading.

[0100] See also Figure 6In some embodiments, when the vehicle is in a parking state and an abnormality occurs in the power battery, controlling the vehicle to be powered on includes steps 602 and 604 .

[0101] Step 602: When the vehicle is parked and the power battery is abnormal, start the timer.

[0102] Step 604: When the timing reaches a preset time, the vehicle is powered on.

[0103] Specifically, in real-world scenarios, when a power battery experiences an abnormality such as thermal runaway, the abnormality is not stable. Furthermore, in real-world scenarios, the abnormality may be mistakenly identified as occurring due to detection errors. Therefore, in this embodiment, when a power battery abnormality is detected in the parked state, a preset timer is used. After the timer reaches the preset timer, the vehicle is powered on. More specifically, in one embodiment, the vehicle is powered on only after the timer reaches the preset timer and the power battery is still in the abnormal state.

[0104] It should be noted that the preset duration is not unique. In one embodiment, the preset duration can be set to be greater than 0 minutes (min) and less than 5 minutes, such as 1 minute, 2 minutes, 3 minutes, or 4 minutes. In more detail, in one embodiment, the preset duration can be set to be greater than 0 minutes and less than or equal to 2 minutes, such as 2 minutes or 1 minute. The specific setting can be based on actual needs.

[0105] The above solution controls the vehicle to be powered on after a preset time when an abnormality in the parking state is detected, which can reduce the operational risk of the vehicle being powered on to a certain extent.

[0106] See also Figure 7 In some embodiments, after step 502 , the method further includes steps 702 and 704 .

[0107] Step 702: Acquire loop electrical parameters of the power battery.

[0108] Step 704 : When the loop electrical parameters meet the preset power limit start condition, the power battery is controlled to operate at reduced output power.

[0109] Specifically, in the solution of this embodiment, when an abnormality is detected in the parking state and the vehicle is powered on, the output power adjustment strategy of the power battery will follow the adjustment strategy when the vehicle is in the driving state and an abnormality occurs. The output power of the power battery will also be adjusted according to the loop electrical parameters of the power battery. The details will not be repeated here.

[0110] The above solution can verify whether it is necessary to reduce the power of the power battery when an abnormality occurs in the power battery during parking conditions by combining the circuit electrical parameters of the power battery, thereby having high output power regulation reliability.

[0111] In some embodiments, the loop electrical parameter includes a loop current, and the method further includes: when the loop current is greater than or equal to a preset current threshold, determining that the loop electrical parameter meets a preset power limit start condition.

[0112] Specifically, this embodiment uses the loop current as an example loop parameter. The loop current of a power battery is positively correlated with its output power. Given a constant output voltage, the greater the loop current, the greater the output power. Therefore, to mitigate high-voltage arcing in abnormal cells, the loop current of the power battery must be kept low. Therefore, if the loop current is detected to be greater than or equal to a preset current threshold, the preset power limit activation condition is considered met. At this point, the loop current is limited, controlling the power battery to operate at a reduced output power.

[0113] It should be noted that the preset current threshold is not unique and may vary depending on the type of power battery. For example, in one embodiment, the preset current threshold may be set to 40A (amperes) to 60A, or to any value between 40A and 60A. More specifically, in one embodiment, the preset current threshold may be set to 50A.

[0114] The above solution combines the loop current of the power battery to verify whether it is necessary to start the power-limited operation, and has a high accuracy in starting the power-reduced operation.

[0115] In some embodiments, controlling the power battery to operate at a reduced output power includes: controlling a resistive load of the safety component to be connected in series to a power supply circuit of the power battery.

[0116] Specifically, a safety component is a component installed in the charge and discharge circuit of a power battery to limit the circuit current and output power, thereby improving the operational safety of the power battery. In one embodiment, the power battery includes a first output pole, a second output pole, and multiple battery cells. A first end formed by connecting the multiple battery cells in series and / or in parallel is connected to the first output pole, and a second end formed by connecting the multiple battery cells in series and / or in parallel is connected to the second output pole. The safety component can be connected in series between the first output pole and the first end, or between the second output pole and the second end, without limitation.

[0117] The safety component includes a resistive load and a switching device in parallel. Under normal conditions, the switching device is turned on to short-circuit the resistive load; when power reduction is required, the switching device is turned off and the resistive load is connected in series to the battery power supply circuit. The power is consumed by the resistive load, thereby reducing the output power of the power battery.

[0118] The above solution reduces the output power by controlling the resistive load to be connected to the power supply circuit of the power battery and reducing the circuit current, and has high output power regulation accuracy.

[0119] In some embodiments, when the vehicle is parked and an abnormality occurs in the power battery, the method further includes: reversely waking up the vehicle's battery management system to issue an abnormality alarm.

[0120] Specifically, in the solution of this embodiment, the battery management system has an abnormality alarm function. In the parking state, when the controller detects an abnormality in the power battery, it can wake up the battery management system and implement an abnormality alarm so that the user can be informed of the abnormality in the power battery in a timely manner.

[0121] It is understandable that in another embodiment, if the vehicle is in driving state and the battery management system is already turned on, the controller can also directly control the battery management system to output an abnormal alarm signal so that the user can be informed of the abnormality of the power battery in a timely manner.

[0122] The above solution can reversely wake up the battery management system to issue an abnormality alarm when an abnormality is detected in the parking state, so that the user can respond in time.

[0123] In order to facilitate understanding of the technical solution of the present application, the present application is explained below in conjunction with more detailed embodiments.

[0124] In this solution, the vehicle includes a power battery, a battery management system, an electric drive component, a safety component and a controller. The power battery includes a first output pole, a second output pole and a plurality of battery cells, wherein a first end formed by connecting a plurality of battery cells in series and / or in parallel is connected to the first output pole, and a second end formed by connecting a plurality of battery cells in series and / or in parallel is connected to the second output pole; the electric drive component is arranged between the first output pole and the second output pole for driving the vehicle; the safety component is arranged between the first output pole and the first end, and the safety component includes a parallel resistive load and a switching device; the controller is connected to the battery management system, the electric drive component and the switching device respectively.

[0125] Driving conditions (initially powered on): After the vehicle's controller identifies thermal runaway, the battery management system issues a thermal runaway alarm. The vehicle remains powered on and the battery management system simultaneously monitors circuit current, among other things. When the circuit current is greater than or equal to a preset current threshold (e.g., 50A), to mitigate high-voltage arcing within the thermally runaway battery cell, the switching device is controlled to shut off, allowing a resistive load to connect to the power battery's power supply circuit, reducing the power battery's output power. Furthermore, during this process, the power battery should prioritize powering the electric drive components. If excess power remains after meeting the operating requirements of the electric drive components, it can also power the thermal management components integrated into the power battery. Otherwise, only power is supplied to the electric drive components. Once the vehicle has finally braked to a stop and reached a safe location, power to the electric drive components is disconnected, maintaining power to the thermal management components.

[0126] Parking condition (initially in the power-off state): After the vehicle's controller identifies thermal runaway, it reversely wakes up the battery management system to issue a thermal runaway alarm and starts counting at a preset time (e.g., 2 minutes). If the power battery still shows signs of thermal runaway after the preset time has elapsed, the vehicle will be powered on. After this, the battery management system will synchronously monitor the loop current, etc. When the loop current is greater than or equal to the preset current threshold (e.g., 50A), in order to alleviate the high-voltage arcing inside the thermal runaway battery cell, the switch device will be controlled to shut down, so that the resistive load is connected to the power supply circuit of the power battery, reducing the output power of the power battery. In addition, during this process, the power battery should always remain in operation as a thermal management component, thereby extending the water circulation time and cooling time of the thermal management component and reducing the risk of diffusion.

[0127] It should be understood that, although the various steps in the flowcharts involved in the various embodiments described above are displayed in sequence according to the instructions of the arrows, these steps are not necessarily executed in sequence in the order indicated by the arrows. Unless otherwise specified herein, there is no strict order restriction on the execution of these steps, and these steps can be executed in other orders. Moreover, at least a portion of the steps in the flowcharts involved in the various embodiments described above can include multiple steps or multiple stages, and these steps or stages are not necessarily executed and completed at the same time, but can be executed at different times, and the execution order of these steps or stages is not necessarily to be carried out in sequence, but can be executed in turn or alternately with other steps or at least a portion of steps or stages in other steps.

[0128] Based on the same inventive concept, embodiments of the present application further provide a vehicle operating device for implementing the aforementioned vehicle operating method. The solution provided by this device is similar to the solution described in the aforementioned method. Therefore, the specific limitations of one or more vehicle operating device embodiments provided below can be found in the above-described limitations of the vehicle operating method and will not be further elaborated here.

[0129] See also Figure 8 The present application also provides a vehicle operation device, including a state monitoring module 802, a power regulation module 804 and a parking control module 806.

[0130] The status monitoring module 802 is used to monitor the vehicle operating status and the power battery operating status; the power regulation module 804 is used to control the power battery to reduce the output power operation and maintain the power battery to supply power to the vehicle's electric drive components when the vehicle is in driving state and the power battery has an abnormality; the parking control module 806 is used to control the operation of the vehicle's thermal management components when the vehicle completes braking and parking.

[0131] In some embodiments, the power regulation module 804 is also used to control the power battery to reduce its output power operation and obtain the operating power requirements of the vehicle's electric drive components; when the output power of the power battery is less than or equal to the operating power requirements, the power battery is maintained to supply power to the electric drive components and the vehicle's thermal management components are controlled to stop operating.

[0132] In some embodiments, the power regulation module 804 is further configured to maintain the power battery supplying power to the electric drive components and control the operation of the thermal management component when the output power of the power battery is greater than the required operating power.

[0133] In some embodiments, the power regulation module 804 is also used to obtain the loop electrical parameters of the power battery when the vehicle is in driving state and the power battery has an abnormality; when the loop electrical parameters meet the preset power limit start-up conditions, the power battery is controlled to reduce the output power operation.

[0134] See also Figure 9 In some embodiments, after the status monitoring module 802 , the device further includes a parking control module 902 .

[0135] The parking control module 902 is used to control the vehicle to be powered on and to control the operation of the thermal management component when the vehicle is in a parked state and an abnormality occurs in the power battery.

[0136] In some embodiments, the parking control module 902 is further configured to start a timer when the vehicle is in a parking state and an abnormality occurs in the power battery; and to control the vehicle to be powered on when the timer reaches a preset time.

[0137] In some embodiments, the parking control module 902 is further configured to obtain loop electrical parameters of the power battery; and control the power battery to operate at reduced output power when the loop electrical parameters meet preset power limit start conditions.

[0138] In some embodiments, the power regulation module 804 or the parking control module 902 is further configured to control the resistive load of the safety component to be connected in series to the power supply circuit of the power battery.

[0139] In some embodiments, the parking control module 902 is also used to reversely wake up the vehicle's battery management system to issue an abnormality alarm.

[0140] Each module in the aforementioned vehicle operating device may be implemented in whole or in part through software, hardware, or a combination thereof. Each module may be embedded in or independent of a processor in a computer device in the form of hardware, or may be stored in a memory in the computer device in the form of software, so that the processor can call and execute the corresponding operations of each module.

[0141] The aforementioned vehicle operation device can monitor the vehicle's operating status and the power battery's operating status in real time. Upon detecting that the vehicle is in motion and an abnormality has occurred in the power battery, the device can control the power battery to operate at reduced power while maintaining power supply to the electric drive components. Finally, after the vehicle has braked to a stop, the vehicle's thermal management components cool the power battery. This solution can reduce the power output of the power battery when an abnormality occurs while the vehicle is in motion. While achieving braking and mitigating rear-end collisions, it can also reduce the possibility of high-voltage arcing within the abnormal battery cell. After the vehicle has braked to a stop, the vehicle's thermal management components continue to cool the power battery, reducing the possibility of the abnormality spreading. This significantly improves vehicle safety in the event of a power battery abnormality.

[0142] In some embodiments, the present application provides a computer device, which may be a terminal, and its internal structure diagram may be as follows: Figure 10As shown. The computer device includes a processor, memory, an input / output interface, a communication interface, a display unit, and an input device. The processor, memory, and input / output interface are connected via a system bus, and the communication interface, display unit, and input device are connected to the system bus via the input / output interface. The processor of the computer device is used to provide computing and control capabilities. The memory of the computer device includes a non-volatile storage medium and internal memory. The non-volatile storage medium stores an operating system and computer programs. The internal memory provides an environment for the operation of the operating system and computer programs in the non-volatile storage medium. The input / output interface of the computer device is used to exchange information between the processor and external devices. The communication interface of the computer device is used to communicate with external terminals via wired or wireless means, and the wireless means can be achieved via Wi-Fi, a mobile cellular network, NFC (near-field communication), or other technologies. When executed by the processor, the computer program implements a vehicle operation method. The display unit of the computer device is used to form a visually visible image and can be a display screen, a projection device, or a virtual reality imaging device. The display screen can be a liquid crystal display screen or an electronic ink display screen, and the input device of the computer device can be a touch layer covering the display screen, or a button, trackball or touchpad set on the computer device casing, or an external keyboard, touchpad or mouse.

[0143] Those skilled in the art will understand that Figure 10 The structure shown in the figure is only a block diagram of a part of the structure related to the solution of the present application, and does not constitute a limitation on the computer device to which the solution of the present application is applied. The specific computer device may include more or fewer components than shown in the figure, or combine certain components, or have a different component arrangement.

[0144] In some embodiments, the present application further provides a computer device, including a memory and a processor, wherein the memory stores a computer program, and when the processor executes the computer program, the following steps are implemented:

[0145] Monitor the vehicle's operating status and the power battery's operating status; when the vehicle is in driving state and the power battery has an abnormality, control the power battery to reduce its output power and maintain the power battery to supply power to the vehicle's electric drive components; when the vehicle completes braking and stops, control the operation of the vehicle's thermal management components.

[0146] In some embodiments, when the processor executes the computer program, it also implements the following steps: controlling the power battery to reduce the output power operation and obtaining the operating power requirement of the vehicle's electric drive components; when the output power of the power battery is less than or equal to the operating power requirement, maintaining the power battery to supply power to the electric drive components and controlling the vehicle's thermal management components to stop operating.

[0147] In some embodiments, when the processor executes the computer program, it further implements the following steps: when the output power of the power battery is greater than the required operating power, the power battery is maintained to supply power to the electric drive components, and the thermal management component is controlled to operate.

[0148] In some embodiments, when the processor executes the computer program, it also implements the following steps: when the vehicle is in driving state and the power battery has an abnormality, obtaining the loop electrical parameters of the power battery; when the loop electrical parameters meet the preset power limit start-up conditions, controlling the power battery to reduce the output power operation.

[0149] In some embodiments, when the processor executes the computer program, it further implements the following steps: when the vehicle is in a parked state and an abnormality occurs in the power battery, controlling the vehicle to power on and controlling the operation of the thermal management component.

[0150] In some embodiments, when the processor executes the computer program, it also implements the following steps: when the vehicle is in a parked state and an abnormality occurs in the power battery, starting the timer; when the timer reaches a preset time, controlling the vehicle to power on.

[0151] In some embodiments, when the processor executes the computer program, it further implements the following steps: obtaining loop electrical parameters of the power battery; and controlling the power battery to reduce output power operation when the loop electrical parameters meet preset power limit start conditions.

[0152] In some embodiments, when the processor executes the computer program, the processor further implements the following steps: when the loop current is greater than or equal to a preset current threshold, determining that the loop electrical parameters meet a preset power limit start condition.

[0153] In some embodiments, when the processor executes the computer program, the processor further implements the following steps: controlling the resistive load of the safety component to be connected in series to the power supply circuit of the power battery.

[0154] In some embodiments, when the processor executes the computer program, it further implements the following steps: reversely waking up the vehicle's battery management system to issue an abnormality alarm.

[0155] In some embodiments, a computer-readable storage medium is provided, on which a computer program is stored. When the computer program is executed by a processor, the following steps are implemented:

[0156] Monitor the vehicle's operating status and the power battery's operating status; when the vehicle is in driving state and the power battery has an abnormality, control the power battery to reduce its output power and maintain the power battery to supply power to the vehicle's electric drive components; when the vehicle completes braking and stops, control the operation of the vehicle's thermal management components.

[0157] In some embodiments, when the computer program is executed by the processor, the following steps are also implemented: controlling the power battery to reduce the output power operation and obtaining the operating power requirement of the vehicle's electric drive components; when the output power of the power battery is less than or equal to the operating power requirement, maintaining the power battery to supply power to the electric drive components and controlling the vehicle's thermal management components to stop operating.

[0158] In some embodiments, when the computer program is executed by the processor, the following steps are further implemented: when the output power of the power battery is greater than the required operating power, the power battery is maintained to supply power to the electric drive components, and the operation of the thermal management component is controlled.

[0159] In some embodiments, when the computer program is executed by the processor, the following steps are also implemented: when the vehicle is in driving state and the power battery has an abnormality, the loop electrical parameters of the power battery are obtained; when the loop electrical parameters meet the preset power limit start-up conditions, the power battery is controlled to reduce the output power operation.

[0160] In some embodiments, when the computer program is executed by the processor, the following steps are also implemented: when the vehicle is in a parked state and an abnormality occurs in the power battery, the vehicle is controlled to be powered on and the thermal management component is controlled to operate.

[0161] In some embodiments, when the computer program is executed by the processor, the following steps are also implemented: when the vehicle is in a parked state and an abnormality occurs in the power battery, the timing is started; when the timing reaches a preset time, the vehicle is controlled to power on.

[0162] In some embodiments, when the computer program is executed by the processor, the following steps are further implemented: obtaining loop electrical parameters of the power battery; and controlling the power battery to reduce output power operation when the loop electrical parameters meet preset power limit start conditions.

[0163] In some embodiments, when the computer program is executed by the processor, the following steps are further implemented: when the loop current is greater than or equal to a preset current threshold, determining that the loop electrical parameters meet a preset power limit start condition.

[0164] In some embodiments, when the computer program is executed by the processor, the following steps are further implemented: controlling the resistive load of the safety component to be connected in series to the power supply circuit of the power battery.

[0165] In some embodiments, when the computer program is executed by the processor, the following steps are further implemented: reversely waking up the battery management system of the vehicle to issue an abnormality alarm.

[0166] In some embodiments, a computer program product is provided, comprising a computer program, which, when executed by a processor, implements the following steps:

[0167] Monitor the vehicle's operating status and the power battery's operating status; when the vehicle is in driving state and the power battery has an abnormality, control the power battery to reduce its output power and maintain the power battery to supply power to the vehicle's electric drive components; when the vehicle completes braking and stops, control the operation of the vehicle's thermal management components.

[0168] In some embodiments, when the computer program is executed by the processor, the following steps are also implemented: controlling the power battery to reduce the output power operation and obtaining the operating power requirement of the vehicle's electric drive components; when the output power of the power battery is less than or equal to the operating power requirement, maintaining the power battery to supply power to the electric drive components and controlling the vehicle's thermal management components to stop operating.

[0169] In some embodiments, when the computer program is executed by the processor, the following steps are further implemented: when the output power of the power battery is greater than the required operating power, the power battery is maintained to supply power to the electric drive components, and the operation of the thermal management component is controlled.

[0170] In some embodiments, when the computer program is executed by the processor, the following steps are also implemented: when the vehicle is in driving state and the power battery has an abnormality, the loop electrical parameters of the power battery are obtained; when the loop electrical parameters meet the preset power limit start-up conditions, the power battery is controlled to reduce the output power operation.

[0171] In some embodiments, when the computer program is executed by the processor, the following steps are also implemented: when the vehicle is in a parked state and an abnormality occurs in the power battery, the vehicle is controlled to be powered on and the thermal management component is controlled to operate.

[0172] In some embodiments, when the computer program is executed by the processor, the following steps are also implemented: when the vehicle is in a parked state and an abnormality occurs in the power battery, the timing is started; when the timing reaches a preset time, the vehicle is controlled to power on.

[0173] In some embodiments, when the computer program is executed by the processor, the following steps are further implemented: obtaining loop electrical parameters of the power battery; and controlling the power battery to reduce output power operation when the loop electrical parameters meet preset power limit start conditions.

[0174] In some embodiments, when the computer program is executed by the processor, the following steps are further implemented: when the loop current is greater than or equal to a preset current threshold, determining that the loop electrical parameters meet a preset power limit start condition.

[0175] In some embodiments, when the computer program is executed by the processor, the following steps are further implemented: controlling the resistive load of the safety component to be connected in series to the power supply circuit of the power battery.

[0176] In some embodiments, when the computer program is executed by the processor, the following steps are further implemented: reversely waking up the battery management system of the vehicle to issue an abnormality alarm.

[0177] The aforementioned computer device, storage medium, and computer program product can monitor the vehicle's operating status and the power battery's operating status in real time. Upon detecting that the vehicle is in motion and a power battery anomaly has occurred, the system can control the power battery to operate at reduced power while maintaining power supply to the electric drive components. Finally, after the vehicle has braked to a stop, the vehicle's thermal management components can cool the power battery. This solution can reduce the power battery's output power when an anomaly occurs while the vehicle is in motion. While achieving a braking stop and mitigating rear-end collisions, it can also reduce the possibility of high-voltage arcing within the anomaly's battery cell. After the vehicle has braked to a stop, the vehicle's thermal management components continue to cool the power battery, reducing the possibility of the anomaly spreading. This significantly improves vehicle safety in the event of a power battery anomaly.

[0178] See also Figure 11 The present application also provides a vehicle operation system, comprising: a power battery 10, a battery management system 20, an electric drive component 30 (M1, M2, and M3 in the figure represent different electric drive components), a safety component 40, and a controller (not shown). The power battery 10 includes a first output pole 12, a second output pole 13, and a plurality of battery cells 11 (cell 1, cell 2, cell 3, and cell n in the figure represent different battery cells), wherein a first end formed by connecting the plurality of battery cells 11 in series and / or in parallel is connected to the first output pole 12, and a second end formed by connecting the plurality of battery cells 11 in series and / or in parallel is connected to the second output pole 13; the battery management system 20 is configured to monitor the operating status of the power battery 10; the electric drive component 30 is disposed between the first output pole 12 and the second output pole 13 and is configured to drive the vehicle; the safety component 40 is disposed between the first output pole 12 and the first end, and includes a resistive load R and a switch device K connected in parallel; the controller is connected to the battery management system 20, the electric drive component 30, and the switch device K, respectively, and is configured to implement the steps of the above-mentioned vehicle operation method.

[0179] Specifically, the implementation of the vehicle operation method is as shown in the above-mentioned embodiments and the accompanying drawings, and will not be described in detail here. The controller can be a controller of the vehicle management system, or it can be an additional controller, and there is no specific limitation. Furthermore, in some embodiments, the vehicle operation system also includes a thermal management component, and the thermal management component is configured on the power battery 10 to perform heat management on the power battery 10, that is, preheating, cooling, etc. In actual scenarios, the controller can also control the power battery 10 to supply power to the thermal management component according to the operating status of the vehicle or the output power of the power battery 10. The specific implementation method will not be described in detail here. In this way, the abnormal battery cell 11 can be cooled to reduce the risk of abnormal spread.

[0180] In some embodiments, the resistive load R includes an adjustable resistance load.

[0181] Specifically, an adjustable resistance load is a resistive load whose resistance value or equivalent resistance can be adjusted. In this embodiment, the resistive load R is configured as an adjustable resistance load. This allows the output power to be reduced by a certain amount based on actual scenarios, thereby mitigating high-voltage arcing within the uncontrolled battery cell 11 while providing appropriate output power for the vehicle's electric drive component 30 and / or thermal management assembly.

[0182] Specifically, when the vehicle is in motion and the power battery 10 experiences an abnormality, the output power of the power battery 10 can be reduced to match the power required by the electric drive component 30, or adjusted to match the sum of the power required by the electric drive component 30 and the thermal management component. Alternatively, when the vehicle is parked and the power battery 10 experiences an abnormality, the output power of the power battery 10 can be reduced to match the power required by the thermal management component.

[0183] It is understandable that the type of load with adjustable resistance is not limited to one type. Any load device with adjustable resistance value can be used. For example, in a more detailed embodiment, the load with adjustable resistance value can be a controllable resistor.

[0184] In some embodiments, the present application also provides a vehicle comprising the above-mentioned vehicle operation system.

[0185] Specifically, the specific structure and implementation of the vehicle operation system are as shown in the above embodiments and drawings, and will not be repeated here. The vehicle can be an electric car, an electric motorcycle or an electric bicycle, etc., which is also not limited.

[0186] The above-mentioned vehicle operation system and vehicle can monitor the vehicle operation status and the operation status of the power battery 10 in real time. When it is detected that the vehicle is in the driving state and the power battery 10 has an abnormality, the power battery 10 can be controlled to reduce power operation and maintain the power battery 10 to supply power to the electric drive component 30. Finally, after the vehicle completes braking and stops, the power battery 10 is cooled by the vehicle's thermal management component. This solution can reduce the output power of the power battery 10 when an abnormality occurs during vehicle driving. While achieving braking and stopping, it can also reduce the possibility of high-voltage arcing inside the abnormal battery cell 11. When the vehicle completes braking and stops, the power battery 10 continues to be cooled by the vehicle's thermal management component to reduce the possibility of the abnormality spreading. In this way, the safety of the entire vehicle can be greatly improved when an abnormality occurs in the power battery 10.

[0187] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present application, rather than to limit them. Although the present application has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some or all of the technical features therein. These modifications or replacements do not deviate the essence of the corresponding technical solutions from the scope of the technical solutions of the embodiments of the present application, and they should all be included in the scope of the claims and specification of the present application. In particular, as long as there is no structural conflict, the various technical features mentioned in the various embodiments can be combined in any way. The present application is not limited to the specific embodiments disclosed herein, but includes all technical solutions that fall within the scope of the claims.

Claims

1. A vehicle operation method, characterized in that: include: Monitor vehicle operating status and power battery operating status; When the vehicle is in motion and an abnormality occurs in the power battery, the power battery is controlled to operate at a reduced output power while maintaining power supply to the vehicle's electric drive components. The output power is the power output between the positive and negative electrodes of the battery pack formed by connecting the battery cells in series and / or in parallel. When the vehicle is braked to a stop, controlling the thermal management component of the vehicle to operate; When the vehicle is in a parking state and the power battery has an abnormality, the vehicle is controlled to be powered on and the thermal management component is controlled to operate; the parking state is when the entire vehicle is powered off and the vehicle is in a stopped state; The abnormality of the power battery includes thermal runaway of the power battery or a tendency of thermal runaway of the power battery; The controlling of the power battery to reduce output power and maintain the power battery to supply power to the electric drive components of the vehicle includes: controlling the power battery to reduce output power and obtaining the operating power requirement of the electric drive components of the vehicle; when the output power of the power battery is less than or equal to the operating power requirement, maintaining the power battery to supply power to the electric drive components and controlling the thermal management components of the vehicle to stop operating; when the output power of the power battery is greater than the operating power requirement, maintaining the power battery to supply power to the electric drive components and controlling the thermal management components to operate.

2. The vehicle operation method according to claim 1, characterized in that: When the vehicle is in a driving state and the power battery has an abnormality, controlling the power battery to reduce output power for operation includes: When the vehicle is in a driving state and the power battery has an abnormality, obtaining circuit electrical parameters of the power battery; When the circuit electrical parameters meet the preset power limit start condition, the power battery is controlled to operate at reduced output power.

3. The vehicle operation method according to claim 1, characterized in that: When the vehicle is in a parked state and an abnormality occurs in the power battery, controlling the vehicle to be powered on includes: When the vehicle is in a parked state and an abnormality occurs in the power battery, starting a timer; When the timing reaches a preset time, the vehicle is controlled to power on.

4. The vehicle operation method according to claim 1, characterized in that: After controlling the vehicle to be powered on and controlling the thermal management component to operate when the vehicle is in a parked state and the power battery has an abnormality, the method further includes: Obtaining loop electrical parameters of the power battery; When the circuit electrical parameters meet the preset power limit start condition, the power battery is controlled to operate at reduced output power.

5. The vehicle operation method according to claim 2 or 4, characterized in that: The loop electrical parameter includes a loop current, and the method further includes: When the loop current is greater than or equal to a preset current threshold, it is determined that the loop electrical parameter meets a preset power limit start condition.

6. The vehicle operation method according to any one of claims 1 to 4, characterized in that: The controlling the power battery to operate at a reduced output power includes: The resistive load of the control safety component is connected in series to the power supply circuit of the power battery.

7. The vehicle operation method according to any one of claims 1 to 4, characterized in that: When the vehicle is in a parked state and an abnormality occurs in the power battery, the method further includes: Reversely wake up the battery management system of the vehicle to issue an abnormality alarm.

8. A vehicle operating device, characterized in that: include: Status monitoring module, used to monitor the vehicle operating status and power battery operating status; A power regulation module is used to control the power battery to reduce its output power when the vehicle is in motion and a power battery cell abnormality occurs, while maintaining the power battery to supply power to the vehicle's electric drive components. The output power is the power output between the positive and negative electrodes of the battery pack formed by connecting the battery cells in series and / or in parallel. a parking control module, configured to control the operation of a thermal management component of the vehicle when the vehicle completes braking and parking; a parking control module, configured to control the vehicle to be powered on and the thermal management component to operate when the vehicle is in a parked state and an abnormality occurs in the power battery; the parked state is when the entire vehicle is powered off and the vehicle is stopped; The abnormality of the power battery includes thermal runaway of the power battery or a tendency of thermal runaway of the power battery; The power regulation module is also used to: control the power battery to reduce its output power operation and obtain the operating power requirement of the vehicle's electric drive components; when the output power of the power battery is less than or equal to the operating power requirement, maintain the power battery to supply power to the electric drive components and control the vehicle's thermal management components to stop operating; when the output power of the power battery is greater than the operating power requirement, maintain the power battery to supply power to the electric drive components and control the thermal management components to operate.

9. A computer device comprising a memory and a processor, wherein the memory stores a computer program, wherein: When the processor executes the computer program, the steps of the vehicle operation method according to any one of claims 1 to 7 are implemented.

10. A computer-readable storage medium having a computer program stored thereon, characterized in that: When the computer program is executed by a processor, the steps of the vehicle operation method according to any one of claims 1 to 7 are implemented.

11. A computer program product comprising a computer program, characterized in that When the computer program is executed by a processor, the steps of the vehicle operation method according to any one of claims 1 to 7 are implemented.

12. A vehicle operation system, characterized in that: include: A power battery comprising a first output pole, a second output pole, and a plurality of battery cells, wherein a first end formed by connecting the plurality of battery cells in series and / or in parallel is connected to the first output pole, and a second end formed by connecting the plurality of battery cells in series and / or in parallel is connected to the second output pole; A battery management system, used to monitor the operating status of the power battery; An electric drive component, disposed between the first output pole and the second output pole, for driving the vehicle; a safety component, disposed between the first output pole and the first end, the safety component comprising a resistive load and a switching device connected in parallel; A controller is connected to the battery management system, the electric drive component and the switching device respectively, and the controller is used to implement the steps of the vehicle operation method according to any one of claims 1 to 7.

13. The vehicle operation system according to claim 12, characterized in that: The resistive load includes a load with adjustable resistance.

14. A vehicle, characterized in that: A vehicle operation system comprising any one of claims 12-13.

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