Multi-battery control method, device and equipment for new energy vehicle and storage medium

Abstract

The invention discloses a multi-battery control method, device and equipment for a new energy vehicle and a storage medium, and the method comprises the steps: responding to a received battery system switching instruction, and obtaining a first voltage provided by a first battery power-on system for carrying out high-voltage power-on on the vehicle at present and a second voltage provided by a second battery power-on system planned to be switched; and at least according to whether the first voltage and the second voltage are within a preset voltage difference range, executing a battery system switching operation, or forbidding execution of the battery system switching operation. Whether the voltages of the two battery systems are in the proper range or not is judged when the two battery systems are switched, switching can be carried out when the voltages are in the proper range, then stable switching of the two battery systems can be ensured, and undifferentiated running of the vehicle under the two systems is achieved. According to the invention, the system can be automatically switched in the driving process of the rechargeable battery and the battery replacement battery, and the driving safety is improved while the endurance is increased.

Description

Technical Field

[0001] The present application relates to the field of power-on technology for new energy vehicles, and specifically to a multi-battery control method, device, equipment and storage medium for new energy vehicles. Background Art

[0002] In order to solve the problem of short battery life, new energy vehicles have introduced charging technology and battery replacement technology to compensate for each other. However, because there is a hidden danger of different voltage and current values ​​when switching between the two systems, forced switching will cause the vehicle to drop high voltage, affecting the vehicle's driving safety.

[0003] To eliminate this safety hazard, an efficient and reliable technical solution is needed to ensure the smooth and safe switching of the battery replacement system and the charging system to achieve safe driving of the vehicle. Summary of the invention

[0004] The present application provides a multi-battery control method, device, equipment and storage medium for a new energy vehicle, which can solve the technical problems existing in the above-mentioned prior art.

[0005] In a first aspect, the present application provides a multi-battery control method for a new energy vehicle, which adopts the following technical solution:

[0006] A multi-battery control method for a new energy vehicle, the method comprising:

[0007] In response to the received battery system switching instruction, obtaining a first voltage provided by a first battery powering system currently performing high-voltage powering on the vehicle and a second voltage provided by a second battery powering system to be switched;

[0008] At least according to whether the first voltage and the second voltage are within a preset voltage difference range, a battery system switching operation is performed, or the battery system switching operation is prohibited.

[0009] In combination with the first aspect, in an implementation manner, performing a battery system switching operation or prohibiting performing a battery system switching operation at least according to whether the first voltage and the second voltage are within a preset voltage difference range includes the following steps:

[0010] determining whether a primary execution condition for executing a battery system switching operation is currently met according to whether the first voltage and the second voltage are within a preset voltage difference range;

[0011] If yes, confirm that the first-level execution conditions are met;

[0012] If not, balancing the first voltage and the second voltage within a set time, and determining whether a first-level execution condition is met after the set time;

[0013] The battery system switching operation is performed when at least the first-level execution condition is met.

[0014] In combination with the first aspect, in an implementation manner, the performing of the battery system switching operation or prohibiting the performing of the battery system switching operation at least according to whether the first voltage and the second voltage are within a preset voltage difference range further includes the following steps:

[0015] Acquire a first self-test signal and a second self-test signal corresponding to the first battery power-on system and the second battery power-on system respectively;

[0016] Determine whether the first battery power-on system and the second battery power-on system have faults according to the first self-test signal and the second self-test signal;

[0017] If there are no faults, it is determined that the secondary execution conditions are currently met;

[0018] The battery system switching operation is performed when at least the primary execution condition and the secondary execution condition are satisfied.

[0019] In combination with the first aspect, in one embodiment, if the first battery power-on system is a battery replacement power-on system, and the second battery power-on system is a rechargeable battery power-on system, after performing a battery system switching operation or prohibiting the battery system switching operation at least according to whether the first voltage and the second voltage are within a preset voltage difference range, the following steps are also included:

[0020] Determining whether the power level of the rechargeable battery is lower than a preset first self-charging threshold;

[0021] If so, control the second battery power-on system to connect to the first battery power-on system to charge the rechargeable battery, or turn on the vehicle driving energy recovery system, connect the vehicle driving energy recovery system to the rechargeable battery, and charge the rechargeable battery.

[0022] In combination with the first aspect, in one implementation, controlling the second battery power-on system to connect to the first battery power-on system to charge the rechargeable battery, or starting a vehicle driving energy recovery system to connect the vehicle driving energy recovery system to the rechargeable battery to charge the rechargeable battery, includes the following steps:

[0023] Determine whether the vehicle's driving energy recovery system can be turned on at present;

[0024] If possible, starting the vehicle running energy recovery system, connecting the vehicle running energy recovery system to the rechargeable battery, and charging the rechargeable battery to the first self-charging threshold;

[0025] If not possible, control the second battery power-on system to connect to the first battery power-on system to charge the rechargeable battery to a preset second self-charging threshold; wherein the second self-charging threshold is less than the first self-charging threshold.

[0026] In combination with the first aspect, in one implementation, if the first battery power-on system is a battery replacement power-on system, and the second battery power-on system is a rechargeable battery power-on system, in performing a battery system switching operation or prohibiting the battery system switching operation at least based on whether the first voltage and the second voltage are within a preset voltage difference range, the following steps are also included:

[0027] Determining whether the rechargeable battery is currently being charged;

[0028] If so, determining that the third level execution condition for executing the battery system switching operation is satisfied;

[0029] If not, it is determined that the three-level execution conditions are not met;

[0030] The battery system switching operation is performed at least when the first voltage and the second voltage are within a preset voltage difference range and the three-level execution condition is satisfied.

[0031] In combination with the first aspect, in one embodiment, the step of responding to the received battery system switching instruction and obtaining the first voltage provided by the first battery powering system currently powering the vehicle at high voltage and the second voltage provided by the second battery powering system to be switched includes the following steps:

[0032] In response to the received installation operation instruction, determine whether the power of the replacement battery meets the preset installation operation requirements;

[0033] When the conditions are met, determine whether the current vehicle is powered by a rechargeable battery as a source of high voltage. If so, switch the power-on system corresponding to the rechargeable battery to the power-on system corresponding to the battery replacement battery; if not, start the power-on system corresponding to the battery replacement battery to power the vehicle at high voltage;

[0034] When it is not satisfied, determine whether the power of the rechargeable battery meets the preset installation operation requirements. If the power of the rechargeable battery meets the requirements, start the power-on system corresponding to the rechargeable battery to power the vehicle at high voltage, or maintain the power-on system corresponding to the rechargeable battery to power the vehicle at high voltage.

[0035] In a second aspect, the embodiment of the present application provides a multi-battery control device for a new energy vehicle, which adopts the following technical solution:

[0036] A multi-battery control device for a new energy vehicle, the device comprising:

[0037] A response module, configured to respond to the received battery system switching instruction and obtain a first voltage provided by a first battery powering system currently performing high-voltage powering on the vehicle and a second voltage provided by a second battery powering system to be switched;

[0038] A switching control module is configured to execute a battery system switching operation or prohibit executing a battery system switching operation at least according to whether the first voltage and the second voltage are within a preset voltage difference range.

[0039] In a third aspect, the embodiment of the present application provides a multi-battery control device for a new energy vehicle, which adopts the following technical solution:

[0040] A multi-battery control device for a new energy vehicle, the multi-battery control device for the new energy vehicle comprising a processor, a memory, and a multi-battery control program for the new energy vehicle stored in the memory and executable by the processor, wherein when the multi-battery control program for the new energy vehicle is executed by the processor, the steps of the multi-battery control method for the new energy vehicle as described above are implemented.

[0041] In a fourth aspect, an embodiment of the present application provides a storage medium, which adopts the following technical solution:

[0042] A storage medium stores a multi-battery control program for a new energy vehicle, wherein when the multi-battery control program for the new energy vehicle is executed by a processor, the steps of the multi-battery control method for the new energy vehicle as described above are implemented.

[0043] The beneficial effects brought by the technical solution provided by the embodiments of the present application include:

[0044] By judging whether the voltages of the two battery systems are within the appropriate range when switching, the two battery systems can be switched when they are within the appropriate range, thereby ensuring the smooth switching of the two battery systems and achieving the same driving of the vehicle under the two systems. This invention solves the problem of automatically switching the rechargeable battery and the battery replacement system during driving, thereby increasing the driving range while improving driving safety. BRIEF DESCRIPTION OF THE DRAWINGS

[0045] Figure 1 This is a flow chart of an embodiment of a multi-battery control method for a new energy vehicle of the present application;

[0046] Figure 2 This is a functional module diagram of an embodiment of a multi-battery control device for a new energy vehicle of the present application;

[0047] Figure 3 This is a schematic diagram of the hardware structure of a multi-battery control device for a new energy vehicle involved in the embodiment of the present application. DETAILED DESCRIPTION

[0048] In order to enable those skilled in the art to better understand the solution of the present application, the technical solution in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of this application.

[0049] In order to solve the problem of short driving range, new energy vehicles have introduced charging technology and battery swapping technology to complement each other. However, due to the hidden danger of different voltage and current values ​​when switching between the two systems, forced switching will cause the vehicle to drop high voltage, affecting the vehicle's driving safety. In order to eliminate this safety hazard, an efficient and reliable technical solution is needed to ensure the smooth and safe switching of the battery swapping system and the charging system to achieve safe driving of the vehicle.

[0050] Based on the above problems, the present invention provides a multi-battery control method, device, equipment and storage medium for new energy vehicles. The key point of the invention is to judge whether the voltages of the two battery systems are within a suitable range when switching between them, and switch when they are within the suitable range, thereby ensuring the smooth switching of the two battery systems and achieving indiscriminate driving of the vehicle under the two systems. The invention solves the problem of automatic switching between the rechargeable battery and the swap battery during driving, thereby increasing driving safety while increasing battery life.

[0051] In order to make the objectives, technical solutions and advantages of the present application clearer, the implementation methods of the present application will be further described in detail below in conjunction with the accompanying drawings.

[0052] In a first aspect, an embodiment of the present application provides a multi-battery control method for a new energy vehicle.

[0053] In one embodiment, referring to Figure 1 , Figure 1 This is a flow chart of the first embodiment of the multi-battery control method for a new energy vehicle of the present application. Figure 1 As shown, the multi-battery control method for new energy vehicles includes:

[0054] S100, in response to a received battery system switching instruction, obtaining a first voltage provided by a first battery powering system currently performing high-voltage powering on a vehicle and a second voltage provided by a second battery powering system to be switched;

[0055] S200: Execute a battery system switching operation or prohibit the execution of the battery system switching operation at least according to whether the first voltage and the second voltage are within a preset voltage difference range.

[0056] Specifically, in some embodiments, the step S200, performing a battery system switching operation or prohibiting the battery system switching operation at least according to whether the first voltage and the second voltage are within a preset voltage difference range, includes the following steps:

[0057] S211, judging whether a primary execution condition for executing a battery system switching operation is currently met according to whether the first voltage and the second voltage are within a preset voltage difference range;

[0058] S212: If yes, confirm that the first-level execution conditions are met;

[0059] S213: If not, perform equalization processing on the first voltage and the second voltage within a set time, and determine whether a first-level execution condition is met after the set time;

[0060] S240: Execute a battery system switching operation when at least the first-level execution condition is met.

[0061] This arrangement enables further pressure differential equalization processing to be performed when the first voltage and the second voltage do not meet the preset pressure differential range, so as to achieve the pressure differential between the two to be within the appropriate range as much as possible, so that the subsequent power-on switching of the battery system can be smoothly performed. For excessive pressure differentials, when the pressure differential cannot be effectively reduced to the appropriate range after the pressure differential equalization processing, the safety of the subsequent battery system switching cannot be guaranteed, and therefore the switching operation of the battery system is prohibited. Specifically, for the set pressure differential range, it is preferably within the range of 3% in this embodiment. The pressure differential equalization processing is implemented by a pressure differential balancer arranged inside the vehicle electronic control system, and the pressure differential balancer is connected to the first battery power-on system and the second battery power-on system respectively.

[0062] Further, in some embodiments, the step S200, performing a battery system switching operation or prohibiting the battery system switching operation at least according to whether the first voltage and the second voltage are within a preset voltage difference range, further includes the following steps:

[0063] S221, obtaining a first self-test signal and a second self-test signal corresponding to the first battery power-on system and the second battery power-on system respectively;

[0064] S222, determining whether the first battery power-on system and the second battery power-on system have faults according to the first self-test signal and the second self-test signal;

[0065] S223: If no faults exist, determine that the secondary execution condition is currently met;

[0066] S240: Execute a battery system switching operation when at least the primary execution condition and the secondary execution condition are met.

[0067] Specifically, when any battery system fails, it will be difficult to ensure the safety of the system after switching. In this embodiment, by further obtaining whether the two battery systems are normal before switching the battery systems, the safety of the subsequent switching process is further ensured.

[0068] Further, in some embodiments, if the first battery power-on system is a battery replacement power-on system and the second battery power-on system is a rechargeable battery power-on system, after performing a battery system switching operation or prohibiting the battery system switching operation at least according to whether the first voltage and the second voltage are within a preset voltage difference range in step S200, the following steps are also included:

[0069] S300, determining whether the power level of the rechargeable battery is lower than a preset first self-charging threshold;

[0070] S310: If yes, control the second battery power-on system to connect to the first battery power-on system to charge the rechargeable battery, or turn on the vehicle running energy recovery system, connect the vehicle running energy recovery system to the rechargeable battery, and charge the rechargeable battery.

[0071] In this embodiment, by switching the rechargeable battery power-on system that supports high-voltage power-on of the vehicle to a battery replacement power-on system, the power level of the charged battery can be further understood. At this time, for the non-working rechargeable battery, it can be charged by the battery replacement power-on system as needed, or the rechargeable battery can be charged by the vehicle driving energy recovery system that is turned on when the vehicle is driving, thereby increasing the internal power of the rechargeable battery that cannot be replaced at will in the vehicle, thereby increasing the cruising range.

[0072] Further, in one embodiment, the step S310, controlling the second battery power-on system to connect to the first battery power-on system to charge the rechargeable battery, or starting the vehicle running energy recovery system to connect the vehicle running energy recovery system to the rechargeable battery to charge the rechargeable battery, includes the following steps:

[0073] S311, determining whether the vehicle driving energy recovery system can be turned on at present;

[0074] S312: If possible, start the vehicle running energy recovery system, connect the vehicle running energy recovery system to the rechargeable battery, and charge the rechargeable battery to the first self-charging threshold;

[0075] S313: If not possible, control the second battery power-on system to connect to the first battery power-on system to charge the rechargeable battery to a preset second self-charging threshold; wherein the second self-charging threshold is less than the first self-charging threshold.

[0076] This arrangement enables, when the vehicle is in a downhill section, to preferentially start the vehicle energy recovery system, connect the vehicle energy recovery system to the rechargeable battery, and because the vehicle energy recovery charging voltage is relatively slower, it is in a slow charging state, which is more suitable for charging the battery to a higher first self-charging threshold. When the vehicle is not in a driving energy recovery condition, the second battery power-on system is connected to the first battery power-on system, and the rechargeable battery is charged to a lower second self-charging threshold, to ensure that the life of the rechargeable battery is not affected during the fast charging process.

[0077] Further, in one embodiment, if the first battery power-on system is a battery replacement power-on system and the second battery power-on system is a rechargeable battery power-on system, in the step S200, at least according to whether the first voltage and the second voltage are within a preset voltage difference range, the battery system switching operation is performed, or the battery system switching operation is prohibited, and the following steps are also included:

[0078] S231, determining whether the rechargeable battery is currently being charged;

[0079] S232: If yes, determine that the third level execution condition for executing the battery system switching operation is met;

[0080] S233: If not, determine that the third-level execution condition is not met;

[0081] S240: Execute a battery system switching operation at least when the first voltage and the second voltage are within a preset voltage difference range and the third-level execution condition is satisfied.

[0082] This arrangement avoids executing the battery power-on switch when the rechargeable battery is in the charging state. On the one hand, it can protect the rechargeable battery. On the other hand, for the rechargeable battery that is still in the charging state, it means that its power is relatively low and the switching is not meaningful. Ultimately, the effectiveness and practicality of the method provided in the present application are further improved.

[0083] Further, in one embodiment, the step S100, in response to the received battery system switching instruction, before obtaining the first voltage provided by the first battery powering system currently powering the vehicle at high voltage and the second voltage provided by the second battery powering system to be switched, includes the following steps:

[0084] S010, responding to the received installation operation instruction, determining whether the power of the replacement battery meets the preset installation operation requirements;

[0085] S020: When the conditions are met, determine whether the current vehicle is powered by a rechargeable battery as a source for high voltage. If so, switch the power-on system corresponding to the rechargeable battery to the power-on system corresponding to the battery replacement battery; if not, start the power-on system corresponding to the battery replacement battery to power the vehicle at high voltage;

[0086] S030. When the condition is not satisfied, determine whether the power level of the rechargeable battery meets the preset installation operation requirement. If the power level of the rechargeable battery meets the requirement, start the power-on system corresponding to the rechargeable battery to power the vehicle at high voltage, or maintain the power-on system corresponding to the rechargeable battery to power the vehicle at high voltage.

[0087] This arrangement enables the system to automatically determine whether the battery swap battery can be used for the installation work when the vehicle needs to be turned on for installation work based on the battery swap battery's power level, thereby ensuring that the rechargeable battery is used for vehicle driving as much as possible to increase the range. When the battery swap battery's power level is insufficient, the rechargeable battery can also be used to temporarily support the installation work. Ultimately, the flexibility of the vehicle in using two battery systems for driving or power supply for installation work is improved.

[0088] In a second aspect, an embodiment of the present application also provides a multi-battery control device for a new energy vehicle.

[0089] In one embodiment, referring to Figure 2 , Figure 2 This is a functional module diagram of an embodiment of a multi-battery control device for a new energy vehicle of the present application. Figure 2 As shown, the multi-battery control device of the new energy vehicle includes:

[0090] A response module, configured to respond to the received battery system switching instruction and obtain a first voltage provided by a first battery powering system currently performing high-voltage powering on the vehicle and a second voltage provided by a second battery powering system to be switched;

[0091] A switching control module is configured to execute a battery system switching operation or prohibit executing a battery system switching operation at least according to whether the first voltage and the second voltage are within a preset voltage difference range.

[0092] Among them, the functional implementation of each module in the multi-battery control device of the new energy vehicle corresponds to the steps in the multi-battery control method embodiment of the new energy vehicle, and its functions and implementation processes will not be repeated here one by one.

[0093] In a third aspect, an embodiment of the present application provides a multi-battery control device for a new energy vehicle. The multi-battery control device for the new energy vehicle may be a personal computer (PC), a laptop computer, a server, or other device with data processing capabilities.

[0094] Reference Figure 3 , Figure 3 The hardware structure diagram of the multi-battery control device of the new energy vehicle involved in the embodiment of the present application is shown in FIG. In the embodiment of the present application, the multi-battery control device of the new energy vehicle may include a processor, a memory, a communication interface and a communication bus.

[0095] The communication bus may be of any type and is used to interconnect the processor, the memory, and the communication interface.

[0096] The communication interface includes input / output (I / O) interface, physical interface and logical interface, etc., which are used to realize the interconnection of devices inside the multi-battery control device of the new energy vehicle, and the interface used to realize the interconnection between the multi-battery control device of the new energy vehicle and other devices (such as other computing devices or user devices). The physical interface can be an Ethernet interface, a fiber optic interface, an ATM interface, etc.; the user device can be a display (Display), a keyboard (Keyboard), etc.

[0097] The memory can be various types of storage media, such as random access memory (RAM), read-only memory (ROM), non-volatile RAM (NVRAM), flash memory, optical storage, hard disk, programmable ROM (PROM), erasable PROM (EPROM), electrically erasable PROM (EEPROM), etc.

[0098] The processor may be a general-purpose processor, which may call the multi-battery control program for the new energy vehicle stored in the memory and execute the multi-battery control method for the new energy vehicle provided in the embodiment of the present application. For example, the general-purpose processor may be a central processing unit (CPU). The method executed when the multi-battery control program for the new energy vehicle is called may refer to the various embodiments of the multi-battery control method for the new energy vehicle of the present application, which will not be repeated here.

[0099] Those skilled in the art will understand that Figure 3The hardware structure shown in the figure does not constitute a limitation on the present application, and may include more or less components than shown in the figure, or combine certain components, or arrange the components differently.

[0100] In a fourth aspect, an embodiment of the present application also provides a storage medium.

[0101] The storage medium of the present application stores a multi-battery control program for a new energy vehicle, wherein when the multi-battery control program for the new energy vehicle is executed by a processor, the steps of the multi-battery control method for a new energy vehicle as described above are implemented.

[0102] Among them, the method implemented when the multi-battery control program of the new energy vehicle is executed can refer to the various embodiments of the multi-battery control method of the new energy vehicle of the present application, and will not be repeated here.

[0103] It should be noted that the serial numbers of the above-mentioned embodiments of the present application are only for description and do not represent the advantages or disadvantages of the embodiments.

[0104] The terms "including" and "having" and any variations thereof in the specification and claims of the present application and the above-mentioned drawings are intended to cover non-exclusive inclusions. For example, a process, method, system, product or device that includes a series of steps or units is not limited to the listed steps or units, but optionally includes steps or units that are not listed, or optionally includes other steps or units inherent to these processes, methods, products or devices. The terms "first", "second" and "third" are used to distinguish different objects, etc., and do not represent a sequence, nor do they limit "first", "second" and "third" to different types.

[0105] In the description of the embodiments of the present application, "exemplary", "for example" or "for example" are used to indicate examples, illustrations or descriptions. Any embodiment or design described as "exemplary", "for example" or "for example" in the embodiments of the present application should not be interpreted as being more preferred or more advantageous than other embodiments or designs. Specifically, the use of words such as "exemplary", "for example" or "for example" is intended to present related concepts in a specific way.

[0106] In the description of the embodiments of the present application, unless otherwise specified, “ / ” means or, for example, A / B can mean A or B; the “and / or” in the text is merely a description of the association relationship of associated objects, indicating that three relationships may exist, for example, A and / or B can mean: A exists alone, A and B exist at the same time, and B exists alone. In addition, in the description of the embodiments of the present application, “multiple” refers to two or more than two.

[0107] In some processes described in the embodiments of the present application, multiple operations or steps that appear in a specific order are included, but it should be understood that these operations or steps may not be executed in the order in which they appear in the embodiments of the present application or in parallel, and the sequence number of the operation is only used to distinguish the different operations, and the sequence number itself does not represent any execution order. In addition, these processes may include more or fewer operations, and these operations or steps may be executed in sequence or in parallel, and these operations or steps may be combined.

[0108] Through the description of the above implementation methods, those skilled in the art can clearly understand that the above-mentioned embodiment methods can be implemented by means of software plus a necessary general hardware platform, and of course by hardware, but in many cases the former is a better implementation method. Based on such an understanding, the technical solution of the present application is essentially or the part that contributes to the prior art can be embodied in the form of a software product, which is stored in a storage medium (such as ROM / RAM, disk, CD) as described above, and includes a number of instructions for a terminal device to execute the methods described in each embodiment of the present application.

[0109] The above are only preferred embodiments of the present application, and are not intended to limit the patent scope of the present application. Any equivalent structure or equivalent process transformation made using the contents of the present application specification and drawings, or directly or indirectly applied in other related technical fields, are also included in the patent protection scope of the present application.

Claims

1. A multi-battery control method for a new energy vehicle, characterized in that: The method comprises: In response to the received battery system switching instruction, obtaining a first voltage provided by a first battery powering system currently performing high-voltage powering on the vehicle and a second voltage provided by a second battery powering system to be switched; At least according to whether the first voltage and the second voltage are within a preset voltage difference range, a battery system switching operation is performed, or the battery system switching operation is prohibited.

2. The multi-battery control method for a new energy vehicle as claimed in claim 1, characterized in that: The performing of the battery system switching operation or prohibiting the performing of the battery system switching operation at least according to whether the first voltage and the second voltage are within a preset voltage difference range comprises the following steps: determining whether a primary execution condition for executing a battery system switching operation is currently met according to whether the first voltage and the second voltage are within a preset voltage difference range; If yes, confirm that the first-level execution conditions are met; If not, balancing the first voltage and the second voltage within a set time, and determining whether a first-level execution condition is met after the set time; The battery system switching operation is performed when at least the first-level execution condition is met.

3. The multi-battery control method for a new energy vehicle as claimed in claim 2, characterized in that: The method of performing a battery system switching operation or prohibiting the battery system switching operation at least according to whether the first voltage and the second voltage are within a preset voltage difference range further includes the following steps: Acquire a first self-test signal and a second self-test signal corresponding to the first battery power-on system and the second battery power-on system respectively; Determine whether the first battery power-on system and the second battery power-on system have faults according to the first self-test signal and the second self-test signal; If there are no faults, it is determined that the secondary execution conditions are currently met; The battery system switching operation is performed when at least the primary execution condition and the secondary execution condition are satisfied.

4. The multi-battery control method for a new energy vehicle as claimed in claim 1, 2 or 3, characterized in that: If the first battery power-on system is a battery replacement power-on system, and the second battery power-on system is a rechargeable battery power-on system, after performing a battery system switching operation or prohibiting the battery system switching operation at least according to whether the first voltage and the second voltage are within a preset voltage difference range, the method further includes the following steps: Determining whether the power level of the rechargeable battery is lower than a preset first self-charging threshold; If so, control the second battery power-on system to connect to the first battery power-on system to charge the rechargeable battery, or turn on the vehicle driving energy recovery system, connect the vehicle driving energy recovery system to the rechargeable battery, and charge the rechargeable battery.

5. The multi-battery control method for a new energy vehicle as claimed in claim 4, characterized in that: The controlling the second battery power-on system to connect to the first battery power-on system to charge the rechargeable battery, or starting the vehicle running energy recovery system to connect the vehicle running energy recovery system to the rechargeable battery to charge the rechargeable battery, comprises the following steps: Determine whether the vehicle's driving energy recovery system can be turned on at present; If possible, starting the vehicle running energy recovery system, connecting the vehicle running energy recovery system to the rechargeable battery, and charging the rechargeable battery to the first self-charging threshold; If not possible, control the second battery power-on system to connect to the first battery power-on system to charge the rechargeable battery to a preset second self-charging threshold; wherein the second self-charging threshold is less than the first self-charging threshold.

6. The multi-battery control method for a new energy vehicle as claimed in claim 4, characterized in that: If the first battery power-on system is a battery replacement power-on system, and the second battery power-on system is a rechargeable battery power-on system, in performing a battery system switching operation or prohibiting the battery system switching operation at least according to whether the first voltage and the second voltage are within a preset voltage difference range, the following steps are also included: Determining whether the rechargeable battery is currently being charged; If so, determining that the third level execution condition for executing the battery system switching operation is satisfied; If not, it is determined that the three-level execution conditions are not met; The battery system switching operation is performed at least when the first voltage and the second voltage are within a preset voltage difference range and the three-level execution condition is satisfied.

7. The multi-battery control method for a new energy vehicle as claimed in claim 1, characterized in that: The method includes the following steps before the first voltage provided by the first battery powering system currently powering the vehicle at high voltage and the second voltage provided by the second battery powering system to be switched are obtained in response to the received battery system switching instruction: In response to the received installation operation instruction, determine whether the power of the replacement battery meets the preset installation operation requirements; When the conditions are met, determine whether the current vehicle is powered by a rechargeable battery as a source of high voltage. If so, switch the power-on system corresponding to the rechargeable battery to the power-on system corresponding to the battery replacement battery; if not, start the power-on system corresponding to the battery replacement battery to power the vehicle at high voltage; When it is not satisfied, determine whether the power of the rechargeable battery meets the preset installation operation requirements. If the power of the rechargeable battery meets the requirements, start the power-on system corresponding to the rechargeable battery to power the vehicle at high voltage, or maintain the power-on system corresponding to the rechargeable battery to power the vehicle at high voltage.

8. A multi-battery control device for a new energy vehicle, characterized in that: The device comprises: A response module, configured to respond to the received battery system switching instruction and obtain a first voltage provided by a first battery powering system currently performing high-voltage powering on the vehicle and a second voltage provided by a second battery powering system to be switched; A switching control module is configured to execute a battery system switching operation or prohibit executing a battery system switching operation at least according to whether the first voltage and the second voltage are within a preset voltage difference range.

9. A multi-battery control device for a new energy vehicle, characterized in that: The multi-battery control device of the new energy vehicle includes a processor, a memory, and a multi-battery control program for the new energy vehicle stored in the memory and executable by the processor, wherein when the multi-battery control program for the new energy vehicle is executed by the processor, the steps of the multi-battery control method for the new energy vehicle as described in any one of claims 1 to 7 are implemented.

10. A storage medium, characterized in that: The storage medium stores a multi-battery control program for a new energy vehicle, wherein when the multi-battery control program for a new energy vehicle is executed by a processor, the steps of the multi-battery control method for a new energy vehicle as described in any one of claims 1 to 7 are implemented.

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