Method and device for maintaining battery capacity of hybrid power vehicle, vehicle and medium

Abstract

The invention relates to the technical field of hybrid power vehicle management, in particular to a method and device for maintaining the electric quantity of a battery of a hybrid power vehicle, the vehicle and a medium. The method comprises the steps that whether a current vehicle is in a parking state or not is judged; acquiring a state signal of at least one system component of the current vehicle under the condition that the current vehicle is in the parking state; and determining a current engine state and a current battery state of the current vehicle based on the state signal of the at least one system component, controlling an engine of the current vehicle to execute a starting action based on the current engine state and the current battery state, and charging a battery of the current vehicle by using the engine. Therefore, the battery is charged through the engine, the electric quantity of the battery can be maintained when the vehicle is parked, the problem that the battery is continuously discharged when the vehicle is in a low-voltage state due to negligence of a driver, then the power consumption of accessories is too large, and the capacity of the battery is insufficient can be solved, and the use convenience of the hybrid power vehicle is improved.

Description

Technical Field

[0001] The present application relates to the technical field of hybrid vehicle management, and in particular to a method, device, vehicle, and medium for maintaining battery power of a hybrid vehicle. Background Art

[0002] During the startup phase of a dual-motor heavy-duty hybrid vehicle, the driver may, due to negligence or other reasons, leave the vehicle in a low-voltage state for an extended period of time. If the vehicle's accessories (such as air conditioning and lights) continue to operate during this period, they will consume a large amount of battery power, ultimately leading to battery depletion and even causing the engine to fail to start properly.

[0003] In related technologies, for heavy-duty hybrid vehicles with dual electric motors, a common method used when the battery is low is to adjust the vehicle to a high-voltage state and use the engine and generator to power the battery.

[0004] However, this method still cannot effectively prevent the problem of insufficient battery capacity caused by the vehicle being in a low-voltage state and the battery continuing to discharge due to driver negligence, which in turn causes excessive power consumption of accessories. It is in urgent need of improvement. Summary of the Invention

[0005] The present application provides a method, device, vehicle and medium for maintaining the battery charge of a hybrid vehicle to solve the problem of insufficient battery capacity caused by excessive accessory power consumption due to driver negligence, thereby improving the convenience of using hybrid vehicles.

[0006] To achieve the above objectives, a first embodiment of the present application provides a method for maintaining battery power of a hybrid vehicle, comprising the following steps: Determine whether the current vehicle is in a parking state; When the current vehicle is in the parking state, obtaining a status signal of at least one system component of the current vehicle; Based on the status signal of at least one system component, the current engine status and the current battery status of the current vehicle are determined; based on the current engine status and the current battery status, the engine of the current vehicle is controlled to perform a starting action, and the engine is used to charge the battery of the current vehicle.

[0007] Through the above technical means, the battery is charged by the engine, which can maintain the battery charge when the vehicle is parked, ensuring that even in the case of improper operation or negligence by the driver, the vehicle can still keep the battery charge within a safe range, avoiding power loss due to excessive power consumption of accessories, thereby ensuring that the engine can start normally.

[0008] According to one embodiment of the present application, controlling the engine of the current vehicle to start the vehicle based on the current engine state and the current battery state, and using the engine to charge the battery of the current vehicle, includes: Based on the current engine state and the current battery state, obtaining a current battery power of the current vehicle, and determining whether the current battery power does not meet a preset engine starting condition; When the current battery power level does not meet the preset engine starting condition, the engine of the current vehicle is controlled to perform the starting action, and the engine is used to charge the battery of the current vehicle until the current battery power level meets the preset engine starting condition.

[0009] The above technical measures ensure that when the battery power is low, the engine can be started promptly and the battery can be charged until the battery power is restored to a level sufficient to support normal engine starting. This not only improves the reliability and safety of the vehicle, but also effectively avoids the problem of difficulty or inability to start the engine due to low battery power.

[0010] According to one embodiment of the present application, determining whether the current battery power level does not meet a preset engine starting condition includes: Determining whether the engine is in a preset ready-to-start state; When the engine is in the preset ready-to-start state, determining whether the current battery power is less than a preset threshold based on the current battery power; When the current battery power is less than the preset threshold, it is determined that the current battery power does not meet the preset engine starting condition.

[0011] Through the above-mentioned technical means, the engine start timing can be further accurately controlled to avoid unnecessary charging operations when the battery power is still sufficient to support the engine start, thereby optimizing energy utilization efficiency.

[0012] According to one embodiment of the present application, after using the engine to charge the battery of the current vehicle until the current battery power meets the preset engine starting condition, the method further includes: The engine is controlled to shut down.

[0013] This technology automatically shuts down the engine after it's fully charged and reaches a suitable starting level, avoiding unnecessary energy consumption. This not only improves the vehicle's energy management efficiency but also reduces unnecessary engine operation, extending its service life.

[0014] According to the method for maintaining the battery charge of a hybrid vehicle proposed in an embodiment of the present application, by determining the current parking state of the vehicle, a status signal of at least one system component of the current vehicle can be obtained. Based on the status signal of the at least one system component, the current engine state and current battery state of the current vehicle can be determined. Then, based on the current engine state and current battery state, the engine of the current vehicle can be controlled to start and the engine can be used to charge the battery of the current vehicle. Thus, by charging the battery through the engine, the battery charge can be maintained while the vehicle is parked. This can solve the problem of insufficient battery capacity caused by excessive accessory power consumption due to the vehicle being in a low voltage state due to driver negligence, thereby improving the convenience of hybrid vehicles.

[0015] To achieve the above-mentioned objectives, a second embodiment of the present application provides a device for maintaining battery power of a hybrid vehicle, comprising: A judgment module is used to judge whether the current vehicle is in a parking state; an acquisition module, configured to acquire a status signal of at least one system component of the current vehicle when the current vehicle is in the parking state; A charging module is used to determine the current engine status and the current battery status of the current vehicle based on the status signal of the at least one system component, control the engine of the current vehicle to perform a starting action based on the current engine status and the current battery status, and use the engine to charge the battery of the current vehicle.

[0016] According to one embodiment of the present application, the charging module includes: a judgment unit, configured to obtain a current battery power level of the current vehicle based on the current engine state and the current battery state, and to judge whether the current battery power level does not meet a preset engine starting condition; A charging unit is used to control the engine of the current vehicle to perform the starting action when the current battery power does not meet the preset engine starting conditions, and use the engine to charge the battery of the current vehicle until the current battery power meets the preset engine starting conditions.

[0017] According to one embodiment of the present application, the judgment unit is specifically configured to: Determining whether the engine is in a preset ready-to-start state; When the engine is in the preset ready-to-start state, determining whether the current battery power is less than a preset threshold based on the current battery power; When the current battery power is less than the preset threshold, it is determined that the current battery power does not meet the preset engine starting condition.

[0018] According to one embodiment of the present application, after using the engine to charge the battery of the current vehicle until the current battery power meets the preset engine starting condition, the charging unit is further configured to: The engine is controlled to shut down.

[0019] According to the hybrid vehicle battery charge maintenance device proposed in the embodiment of the present application, by determining the current parking state of the vehicle, it can obtain a status signal of at least one system component of the current vehicle, and based on the status signal of at least one system component, determine the current engine state and current battery state of the current vehicle. Then, based on the current engine state and current battery state, the current vehicle engine is controlled to start the engine and use the engine to charge the current vehicle battery. Thus, by charging the battery through the engine, the battery charge can be maintained while the vehicle is parked. This can solve the problem of insufficient battery capacity caused by excessive accessory power consumption due to the vehicle being in a low voltage state due to driver negligence, thereby improving the convenience of hybrid vehicles.

[0020] To achieve the above-mentioned objectives, the third aspect of the present application proposes a vehicle, comprising: a memory, a processor, and a computer program stored in the memory and executable on the processor, wherein the processor executes the program to implement the method for maintaining the battery power of a hybrid vehicle as described in the above-mentioned embodiment.

[0021] To achieve the above objectives, the fourth embodiment of the present application proposes a computer-readable storage medium having a computer program stored thereon, which is executed by a processor to implement the method for maintaining the battery power of a hybrid vehicle as described in the above embodiment.

[0022] Additional aspects and advantages of the present application will be given in part in the description below, and in part will become apparent from the description below, or will be learned through practice of the present application. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] The above and / or additional aspects and advantages of the present application will become apparent and easily understood from the following description of the embodiments in conjunction with the accompanying drawings, in which: Figure 1 This is a flow chart of a method for maintaining battery power of a hybrid vehicle according to an embodiment of the present application; Figure 2 A block diagram of a device for maintaining battery power of a hybrid vehicle according to an embodiment of the present application; Figure 3 A schematic structural diagram of a vehicle provided according to an embodiment of the present application.

[0024] Explanation of reference numerals: 10 - device for maintaining battery power of hybrid vehicle, 100 - determination module, 200 - acquisition module, 300 - charging module; 301 - memory, 302 - processor, 303 - communication interface. DETAILED DESCRIPTION

[0025] The following describes in detail embodiments of the present application. Examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are intended to be used to explain the present application, and should not be construed as limiting the present application.

[0026] The following describes the method, device, vehicle and medium for maintaining the battery power of a hybrid vehicle proposed in accordance with an embodiment of the present application with reference to the accompanying drawings. First, the method for maintaining the battery power of a hybrid vehicle proposed in accordance with an embodiment of the present application will be described with reference to the accompanying drawings.

[0027] Figure 1 The figure is a flow chart of a method for maintaining battery power of a hybrid vehicle according to an embodiment of the present application.

[0028] For example, Figure 1 As shown, the method for maintaining the battery power of the hybrid vehicle includes the following steps: In step S101 , it is determined whether the vehicle is currently in a parking state.

[0029] It is understood that the hybrid vehicle battery charge maintenance method proposed in the embodiments of this application is intended for vehicles in the parked state. When the vehicle is parked, it should normally maintain a high-voltage standby state. If the driver fails to promptly adjust the vehicle's state while the vehicle is parked (e.g., due to continued power consumption by accessories such as the air conditioner), the battery charge may be excessively depleted, falling below the threshold required for engine starting. The battery may gradually become low-voltage, preventing the engine from starting properly and affecting the vehicle's normal use.

[0030] In step S102 , when the current vehicle is in a parking state, a state signal of at least one system component of the current vehicle is acquired.

[0031] Specifically, when the vehicle is currently in the parked state, the vehicle control unit (VCU) can use the CAN (Controller Area Network) bus network to obtain real-time operating data of some key control units. For example, the engine start and stop status, speed, temperature and other parameters sent by the engine control unit, the motor torque output, working mode (drive / generation) and other operating information provided by the motor control unit, and the real-time battery power, voltage, temperature and health status and other core data transmitted by the battery control unit.

[0032] In step S103, based on the status signal of at least one system component, the current engine status and the current battery status of the current vehicle are determined, and based on the current engine status and the current battery status, the engine of the current vehicle is controlled to perform a starting action, and the engine is used to charge the battery of the current vehicle.

[0033] In other words, after receiving a status signal from at least one system component, this data provides the VCU with a dynamic monitoring foundation, enabling it to determine the vehicle's current state in real time, including engine status (whether it is operating) and the actual battery status (battery current, etc.). Based on this, the engine start sequence can be further triggered to quickly put the engine into operation. Once the engine is successfully started, it converts mechanical energy into electrical energy, thereby charging the battery and restoring its charge level.

[0034] For ease of understanding, the following describes in detail how to control the engine of the current vehicle to start the vehicle and use the engine to charge the battery of the current vehicle based on the current engine status and the current battery status.

[0035] As a possible implementation method, in some embodiments, based on the current engine status and the current battery status, the engine of the current vehicle is controlled to perform a starting action, and the engine is used to charge the battery of the current vehicle, including: based on the current engine status and the current battery status, obtaining the current battery power of the current vehicle, and determining whether the current battery power does not meet the preset conditions for engine starting; if the current battery power does not meet the preset conditions for engine starting, controlling the engine of the current vehicle to perform a starting action, and using the engine to charge the battery of the current vehicle until the current battery power meets the preset conditions for engine starting.

[0036] Specifically, based on the vehicle's current engine and battery status, the vehicle's battery charge level can be further obtained. This charge level information can then be used to determine whether the current battery charge level is sufficient for engine start (i.e., the preset engine start conditions). If an assessment determines that the current battery charge level does not meet the preset engine start conditions, the system can automatically take action. Specifically, the VCU sends corresponding control requests to each control unit via the CAN bus network. These requests are customized for different start-up phases. Upon receiving the request, each control unit performs precise control operations on various components of the powertrain to control the vehicle's start state (i.e., the engine starts). This operation is intended to ensure that the battery charge level is effectively maintained while the vehicle is parked, thereby ensuring normal vehicle start-up and operation.

[0037] This not only ensures a stable battery charge while the vehicle is parked, but also prevents the engine from failing to start due to battery depletion. Furthermore, this maintenance method incorporates intelligent judgment, flexibly adjusting engine start timing and charging strategies based on the vehicle's actual conditions to achieve optimal energy savings and battery protection.

[0038] Optionally, in some embodiments, determining whether the current battery charge does not meet the preset conditions for starting the engine includes: determining whether the engine is in a preset standby-start state; when the engine is in the preset standby-start state, determining whether the current battery charge is less than a preset threshold based on the current battery charge; when the current battery charge is less than the preset threshold, determining that the current battery charge does not meet the preset conditions for starting the engine.

[0039] The preset threshold value may be a value set in advance by researchers in this field, a value obtained through a limited number of experiments, or a value obtained through a limited number of computer simulations, and is not specifically limited here.

[0040] Specifically, it can first determine whether the engine is in a preset standby state, i.e., a high-voltage standby state. Once the engine is confirmed to be in the preset standby state, if it is identified that the current vehicle battery is at a power level lower than the normal requirement, the VCU can evaluate the current battery power level, i.e., determine whether the current battery power level is less than a preset threshold. If the VCU determines that the current battery power level is less than the preset threshold, it can indicate that the current battery power level does not meet the preset conditions for engine starting.

[0041] Therefore, during the entire parking process, the vehicle is adjusted to a high-voltage state by real-time monitoring of the battery power, and the engine is started to charge when the power is insufficient, avoiding subsequent engine start-up failure caused by low battery power due to accessory consumption.

[0042] Furthermore, in some embodiments, after the engine is used to charge the battery of the current vehicle until the current battery power meets the preset engine starting condition, the method further includes: controlling the engine to shut down.

[0043] That is to say, in the process of using the engine to charge the battery of the current vehicle, once the VCU recognizes that the current battery power is greater than or equal to the preset threshold, it can control the engine to shut down and complete the charging of the battery.

[0044] It should be noted that the method for maintaining battery charge in a hybrid vehicle proposed in the embodiments of the present application is not limited to using the VCU to obtain status signals from each control unit on the vehicle's CAN bus network, send control requests to each control unit, and then have each control unit perform corresponding control on each component of the power system. In actual applications, other controllers can also be used to directly determine or control to achieve the desired results.

[0045] According to the method for maintaining the battery charge of a hybrid vehicle proposed in an embodiment of the present application, by determining the current parking state of the vehicle, a status signal of at least one system component of the current vehicle can be obtained. Based on the status signal of the at least one system component, the current engine state and current battery state of the current vehicle can be determined. Then, based on the current engine state and current battery state, the engine of the current vehicle can be controlled to start and the engine can be used to charge the battery of the current vehicle. Thus, by charging the battery through the engine, the battery charge can be maintained while the vehicle is parked. This can solve the problem of insufficient battery capacity caused by excessive accessory power consumption due to the vehicle being in a low voltage state due to driver negligence, thereby improving the convenience of hybrid vehicles.

[0046] Next, a device for maintaining battery power of a hybrid vehicle according to an embodiment of the present application will be described with reference to the accompanying drawings.

[0047] Figure 3 It is a block diagram of a device for maintaining battery power of a hybrid vehicle according to an embodiment of the present application.

[0048] like Figure 3 As shown, the battery power maintenance device 10 of the hybrid vehicle includes: a judgment module 100 , an acquisition module 200 and a charging module 300 .

[0049] The judging module 100 is used to judge whether the current vehicle is in a parking state; An acquisition module 200 is configured to acquire a status signal of at least one system component of the current vehicle when the current vehicle is in a parked state; The charging module 300 is used to determine the current engine status and the current battery status of the current vehicle based on the status signal of at least one system component, control the engine of the current vehicle to perform a starting action based on the current engine status and the current battery status, and use the engine to charge the battery of the current vehicle.

[0050] Optionally, in some embodiments, the charging module 300 includes: a judgment unit, configured to obtain a current battery level of the vehicle based on a current engine state and a current battery state, and to judge whether the current battery level does not meet a preset engine starting condition; The charging unit is used to control the engine of the current vehicle to start when the current battery power does not meet the preset conditions for starting the engine, and use the engine to charge the battery of the current vehicle until the current battery power meets the preset conditions for starting the engine.

[0051] Optionally, in some embodiments, the judging unit is specifically configured to: Determine whether the engine is in a preset waiting-to-start state; When the engine is in a preset ready-to-start state, determining whether the current battery power is less than a preset threshold based on the current battery power; When the current battery power is less than a preset threshold, it is determined that the current battery power does not meet the preset engine starting condition.

[0052] Optionally, in some embodiments, after the engine is used to charge the battery of the current vehicle until the current battery power meets a preset condition for starting the engine, the charging unit is further configured to: Controlled engine shutdown.

[0053] It should be noted that the above explanation of the embodiment of the method for maintaining the battery power of a hybrid vehicle is also applicable to the device for maintaining the battery power of a hybrid vehicle of this embodiment, and will not be repeated here.

[0054] According to the hybrid vehicle battery charge maintenance device proposed in the embodiment of the present application, by determining the current parking state of the vehicle, it can obtain a status signal of at least one system component of the current vehicle, and based on the status signal of at least one system component, determine the current engine state and current battery state of the current vehicle. Then, based on the current engine state and current battery state, the current vehicle engine is controlled to start the engine and use the engine to charge the current vehicle battery. Thus, by charging the battery through the engine, the battery charge can be maintained while the vehicle is parked. This can solve the problem of insufficient battery capacity caused by excessive accessory power consumption due to the vehicle being in a low voltage state due to driver negligence, thereby improving the convenience of hybrid vehicles.

[0055] Figure 3 A schematic diagram of the structure of a vehicle provided in an embodiment of the present application. The vehicle may include: Memory 301 , processor 302 , and computer programs stored in the memory 301 and executable on the processor 302 .

[0056] When the processor 302 executes the program, the method for maintaining the battery power of the hybrid vehicle provided in the above embodiment is implemented.

[0057] Furthermore, the vehicle further comprises: The communication interface 303 is used for communication between the memory 301 and the processor 302 .

[0058] The memory 301 is used to store computer programs that can be run on the processor 302 .

[0059] The memory 301 may include a high-speed RAM (Random Access Memory) memory, and may also include a non-volatile memory, such as at least one disk memory.

[0060] If the memory 301, processor 302, and communication interface 303 are implemented independently, the communication interface 303, memory 301, and processor 302 can be connected to each other via a bus and communicate with each other. The bus can be an ISA (Industry Standard Architecture) bus, a PCI (Peripheral Component Interconnect) bus, or an EISA (Extended Industry Standard Architecture) bus. Buses can be divided into address buses, data buses, control buses, etc. For ease of representation, Figure 3Only one thick line is used in the diagram, but this does not mean that there is only one bus or one type of bus.

[0061] Optionally, in a specific implementation, if the memory 301, the processor 302 and the communication interface 303 are integrated on a chip, the memory 301, the processor 302 and the communication interface 303 can communicate with each other through an internal interface.

[0062] The processor 302 may be a CPU (Central Processing Unit), or an ASIC (Application Specific Integrated Circuit), or one or more integrated circuits configured to implement the embodiments of the present application.

[0063] An embodiment of the present application further provides a computer-readable storage medium having a computer program stored thereon, which, when executed by a processor, implements the above-mentioned method for maintaining the battery power of a hybrid vehicle.

[0064] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of the technical features being referred to. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of such features. Throughout the description of this application, "plurality" means at least two, for example, two, three, etc., unless otherwise specifically defined.

[0065] In the description of this specification, the reference terms "one embodiment", "some embodiments", "example", "specific example", or "some examples" mean that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present application. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art can combine and combine different embodiments or examples described in this specification and features of different embodiments or examples without contradiction.

[0066] Although the embodiments of the present application have been shown and described above, it can be understood that the above embodiments are exemplary and cannot be understood as limitations on the present application. Ordinary technicians in this field can change, modify, replace and modify the above embodiments within the scope of the present application.

Claims

1. A method for maintaining battery power of a hybrid vehicle, characterized in that: The following steps are involved: Determine whether the current vehicle is in a parking state; When the current vehicle is in the parking state, obtaining a status signal of at least one system component of the current vehicle; Based on the status signal of at least one system component, the current engine status and the current battery status of the current vehicle are determined; based on the current engine status and the current battery status, the engine of the current vehicle is controlled to perform a starting action, and the engine is used to charge the battery of the current vehicle.

2. The method according to claim 1, characterized in that The controlling the engine of the current vehicle to start based on the current engine state and the current battery state, and using the engine to charge the battery of the current vehicle, includes: Based on the current engine state and the current battery state, obtaining a current battery power of the current vehicle, and determining whether the current battery power does not meet a preset engine starting condition; When the current battery power level does not meet the preset engine starting condition, the engine of the current vehicle is controlled to perform the starting action, and the engine is used to charge the battery of the current vehicle until the current battery power level meets the preset engine starting condition.

3. The method according to claim 2, characterized in that The determining whether the current battery power level does not meet the preset engine starting condition includes: Determining whether the engine is in a preset ready-to-start state; When the engine is in the preset ready-to-start state, determining whether the current battery power is less than a preset threshold based on the current battery power; When the current battery power is less than the preset threshold, it is determined that the current battery power does not meet the preset engine starting condition.

4. The method according to claim 2, characterized in that After charging the battery of the current vehicle by using the engine until the current battery power meets the preset engine starting condition, the method further includes: The engine is controlled to shut down.

5. A battery charge maintenance device for a hybrid vehicle, characterized in that: include: A judgment module is used to judge whether the current vehicle is in a parking state; an acquisition module, configured to acquire a status signal of at least one system component of the current vehicle when the current vehicle is in the parking state; A charging module is used to determine the current engine status and the current battery status of the current vehicle based on the status signal of the at least one system component, control the engine of the current vehicle to perform a starting action based on the current engine status and the current battery status, and use the engine to charge the battery of the current vehicle.

6. The device according to claim 5, characterized in that The charging module includes: a judgment unit, configured to obtain a current battery power level of the current vehicle based on the current engine state and the current battery state, and to judge whether the current battery power level does not meet a preset engine starting condition; A charging unit is used to control the engine of the current vehicle to perform the starting action when the current battery power does not meet the preset engine starting conditions, and use the engine to charge the battery of the current vehicle until the current battery power meets the preset engine starting conditions.

7. The device according to claim 6, characterized in that The judgment unit is specifically configured to: Determining whether the engine is in a preset ready-to-start state; When the engine is in the preset ready-to-start state, determining whether the current battery power is less than a preset threshold based on the current battery power; When the current battery power is less than the preset threshold, it is determined that the current battery power does not meet the preset engine starting condition.

8. The device according to claim 6, characterized in that After the engine is used to charge the battery of the current vehicle until the current battery power meets the preset engine starting condition, the charging unit is further configured to: The engine is controlled to shut down.

9. A vehicle, characterized in that: include: A memory, a processor, and a computer program stored in the memory and executable on the processor, wherein the processor executes the program to implement the method for maintaining battery power of a hybrid vehicle according to any one of claims 1 to 4.

10. A computer-readable storage medium having a computer program stored thereon, characterized in that: The program is executed by a processor to implement the method for maintaining battery power of a hybrid vehicle as claimed in any one of claims 1 to 4.

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