Vehicle power supply method, power supply system, electronic device, control system and vehicle

Abstract

The invention relates to a vehicle power supply method, a power supply system, an electronic device, a control system and a vehicle. The power supply system comprises a first load, a second load, a first battery pack, a second battery pack and a bidirectional voltage converter, the first load is connected with the first battery pack; the second load is connected with the second battery pack; the bidirectional voltage converter is respectively connected with the first battery pack and the second battery pack; the first battery pack is used for supplying power to the first load; the second battery pack is used for supplying power to the second load; the bidirectional voltage converter is used for controlling energy transmission between the first battery pack and the second battery pack; according to the technical scheme, power supply to the vehicle can be achieved through the two battery packs, energy transmission can be conducted between the two battery packs, on the premise that the vehicle has enough energy, high power output is achieved at the same time, and the requirements of a user for the endurance mileage and the driving capacity are met.

Description

Technical Field

[0001] The present disclosure relates to the technical field of vehicle control, and particularly, to a power supply method, a power supply system, an electronic device, a control system and a vehicle for a vehicle. Background Art

[0002] With the development of vehicle technology, people have higher requirements for the driving experience of vehicles. On the one hand, people want vehicles to have a higher cruising range; on the other hand, they want vehicles to have strong driving performance; more importantly, they want vehicles to be able to maintain the best performance all-weather.

[0003] To solve the above problems, on the one hand, the power battery of the vehicle needs to have a higher energy density to provide more energy for the vehicle on the premise of the same volume; on the other hand, the power battery of the vehicle needs to have a higher power density to provide a strong power output in a short time. Summary of the Invention

[0004] The purpose of the present disclosure is to provide a power supply method, a power supply system, an electronic device, a control system and a vehicle for a vehicle, which are used to improve the working efficiency of the vehicle battery pack.

[0005] To achieve the above purpose, in a first aspect, the present disclosure provides a power supply system for a vehicle, the power supply system includes a first load, a second load, a first battery pack, a second battery pack and a bidirectional voltage converter; the first load is connected to the first battery pack; the second load is connected to the second battery pack; the bidirectional voltage converter is respectively connected to the first battery pack and the second battery pack;

[0006] The first battery pack is used to supply power to the first load;

[0007] The second battery pack is used to supply power to the second load;

[0008] The bidirectional voltage converter is used to control the energy transfer between the first battery pack and the second battery pack.

[0009] Optionally, the bidirectional voltage converter is configured to:

[0010] When the first state of charge of the first battery pack is within a first preset range and the second state of charge of the second battery pack is within a second preset range, enable the first battery pack and the second battery pack to perform energy transfer in a first energy transfer direction;

[0011] When the first state of charge of the first battery pack is within a third preset range and the second state of charge of the second battery pack is within a fourth preset range, energy is transferred between the first battery pack and the second battery pack in a second energy transfer direction.

[0012] Optionally, the first energy transfer direction is for the first battery pack to transfer energy to the second battery pack; the second energy transfer direction is for the second battery pack to transfer energy to the first battery pack.

[0013] Optionally, the bidirectional voltage converter is configured to:

[0014] When the first state of charge of the first battery pack is within a fifth preset range and the second state of charge of the second battery pack is within a sixth preset range, the first battery pack and / or the second battery pack reduces its energy output.

[0015] Optionally, the first preset range of the first state of charge of the first battery pack is greater than the third preset range of the first state of charge of the first battery pack, and the third preset range of the first state of charge of the first battery pack is greater than the fifth preset range of the first state of charge of the first battery pack;

[0016] The sixth preset range of the second state of charge of the second battery pack is less than the second preset range and the fourth preset range of the second state of charge of the second battery pack.

[0017] Optionally, the first preset range includes one or more of greater than or equal to 20%, greater than or equal to 10% and less than 20%, and greater than or equal to 5% and less than 10%;

[0018] The third preset range includes one or more of greater than or equal to 5% and less than 10%, greater than or equal to 2% and less than 5%, and less than 2%;

[0019] The fifth preset range includes less than 2%;

[0020] The sixth preset range includes less than 10%.

[0021] Optionally, the power supply system further includes a first pre-charge circuit; the first pre-charge circuit is respectively connected to the first battery pack and the first load;

[0022] The first pre-charge circuit is used to pre-charge the first load; and / or

[0023] The power supply system further includes a second pre-charge circuit; the second pre-charge circuit is respectively connected to the second battery pack and the second load;

[0024] The second pre-charge circuit is used to pre-charge the second load.

[0025] Optionally, the second load is the power system of the vehicle.

[0026] In a second aspect, the present disclosure provides a power supply method for a vehicle, which is applied to the power supply system of the vehicle. The system includes a first load, a second load, a first battery pack, a second battery pack, and a bidirectional voltage converter; the first load is connected to the first battery pack; the second load is connected to the second battery pack; the bidirectional voltage converter is respectively connected to the first battery pack and the second battery pack; the method includes:

[0027] According to the first state of charge of the first battery pack and the second state of charge of the second battery pack, control the energy transfer between the first battery pack and the second battery pack through the bidirectional voltage converter; wherein, the first battery pack is used to supply power to the first load, and the second battery pack is used to supply power to the second load.

[0028] Optionally, the controlling the energy transfer between the first battery pack and the second battery pack through the bidirectional voltage converter includes:

[0029] Through the bidirectional voltage converter, when the first state of charge of the first battery pack is within a first preset range and the second state of charge of the second battery pack is within a second preset range, enable the first battery pack and the second battery pack to perform energy transfer in a first energy transfer direction;

[0030] When the first state of charge of the first battery pack is within a third preset range and the second state of charge of the second battery pack is within a fourth preset range, enable the first battery pack and the second battery pack to perform energy transfer in a second energy transfer direction.

[0031] Optionally, the first energy transfer direction is from the first battery pack to the second battery pack; the second energy transfer direction is from the second battery pack to the first battery pack.

[0032] Optionally, the controlling the energy transfer between the first battery pack and the second battery pack through the bidirectional voltage converter includes:

[0033] Through the bidirectional voltage converter, when the first state of charge of the first battery pack is within a fifth preset range and the second state of charge of the second battery pack is within a sixth preset range, the first battery pack and / or the second battery pack reduces energy output.

[0034] Optionally, a first preset range of the first state of charge of the first battery pack is greater than a third preset range of the first state of charge of the first battery pack, and the third preset range of the first state of charge of the first battery pack is greater than a fifth preset range of the first state of charge of the first battery pack;

[0035] A sixth preset range of the second state of charge of the second battery pack is less than a second preset range and a fourth preset range of the second state of charge of the second battery pack.

[0036] Optionally, the first preset range includes one or more of greater than or equal to 20%, greater than or equal to 10% and less than 20%, and greater than or equal to 5% and less than 10%;

[0037] The third preset range includes one or more of greater than or equal to 5% and less than 10%, greater than or equal to 2% and less than 5%, and less than 2%;

[0038] The fifth preset range includes less than 2%;

[0039] The sixth preset range includes less than 10%.

[0040] Optionally, the system further includes a first precharge circuit; the first precharge circuit is respectively connected to the first battery pack and the first load; the method further includes:

[0041] Precharging the first load through the first precharge circuit.

[0042] Optionally, the system further includes a second precharge circuit; the second precharge circuit is respectively connected to the second battery pack and the second load; the method further includes:

[0043] Precharging the second load through the second precharge circuit.

[0044] Optionally, the second load is a power system of the vehicle.

[0045] In a third aspect, the present disclosure provides an electronic device, including:

[0046] A memory storing a computer program thereon;

[0047] A processor configured to execute the computer program in the memory to implement the functions of the power supply system of the vehicle described in the first aspect above.

[0048] In a fourth aspect, the present disclosure provides a control system of a vehicle, including the electronic device described in the third aspect above, and / or, the power supply system of the vehicle described in the first aspect above.

[0049] Optionally, the electronic device is respectively connected to the bidirectional voltage converter, the first battery pack, and the second battery pack.

[0050] In a fifth aspect, the present disclosure provides a vehicle including the power supply system of the vehicle described in the first aspect or the control system of the vehicle described in the fourth aspect above.

[0051] Through the above technical solutions, the vehicle can be powered by two battery packs, and energy can be transferred between the two battery packs. This enables the vehicle to have sufficient energy while also having strong power output, meeting the user's requirements for driving range and driving ability, and improving the user's driving experience.

[0052] Other features and advantages of the present disclosure will be described in detail in the subsequent specific implementation section. Description of the Drawings

[0053] The drawings are used to provide a further understanding of the present disclosure and constitute a part of the specification. They are used together with the following specific implementation to explain the present disclosure, but do not constitute a limitation to the present disclosure. In the drawings:

[0054] Figure 1 is a block diagram of a power supply system of a vehicle shown according to an exemplary embodiment.

[0055] Figure 2 is according to Figure 1 an exemplary embodiment of

[0056] Figure 3 is a block diagram of another power supply system of a vehicle shown according to an exemplary embodiment.

[0057] Figure 4 is a flowchart of a power supply method of a vehicle shown according to an exemplary embodiment.

[0058] Figure 5 is according to Figure 4 an exemplary embodiment of

[0059] Figure 6 is according to Figure 5 an exemplary embodiment of

[0060] Figure 7 is a block diagram of an electronic device shown according to an exemplary embodiment.

[0061] Figure 8 is a block diagram of a control system of a vehicle shown according to an exemplary embodiment.

[0062] Figure 9 It is a block diagram of a vehicle shown according to an exemplary embodiment. Detailed implementation manners

[0063] The following will detail the specific implementation manners of the present disclosure in conjunction with the accompanying drawings. It should be understood that the specific implementation manners described herein are only for explaining and understanding the present disclosure, and are not used to limit the present disclosure.

[0064] First, the application scenario of the present disclosure will be introduced. The present disclosure is applied to the scenario of supplying power to the load of a vehicle through a battery pack. In the related art, a single battery pack can directly supply power to the load of the vehicle. Exemplarily, the battery pack can be a power battery, for example, an energy-type power battery or a power-type power battery; the load can be a high-voltage load of the vehicle, such as a power system, a DC-DC converter, an on-board charger (OBC), or a compressor, etc.

[0065] With the development of vehicle technology, people have higher requirements for the driving experience of vehicles. On the one hand, people want the vehicle to have a higher driving range; on the other hand, they want the vehicle to have strong driving performance; more importantly, they want the vehicle to be able to maintain the best performance all-weather. However, the energy-type power battery can only provide a higher cruising range for the vehicle, and the power-type power battery can only bring strong driving performance to the vehicle. It can be seen that supplying power to the load through a single battery pack alone cannot meet people's growing driving needs.

[0066] To solve the above problems, the present disclosure provides a power supply method, a power supply system, an electronic device, a control system, and a vehicle for a vehicle; the power supply system includes a first load, a second load, a first battery pack, a second battery pack, and a bidirectional voltage converter; the first load is connected to the first battery pack; the second load is connected to the second battery pack; the bidirectional voltage converter is respectively connected to the first battery pack and the second battery pack; the first battery pack is used to supply power to the first load; the second battery pack is used to supply power to the second load; the bidirectional voltage converter is used to control the energy transfer between the first battery pack and the second battery pack; through the above technical solution, power supply to the vehicle can be achieved through two battery packs, and energy transfer can also occur between the two battery packs, enabling the vehicle to have strong power output while having sufficient energy, meeting the requirements of users for cruising range and driving ability, and improving the driving experience of users.

[0067] Figure 1 It is a block diagram of a power supply system of a vehicle shown according to an exemplary embodiment. As Figure 1As shown, the system 100 includes a first load 110, a second load 120, a first battery pack 130, a second battery pack 140, and a bidirectional voltage converter 150; the first load 110 is connected to the first battery pack 130; the second load 120 is connected to the second battery pack 140; the bidirectional voltage converter 150 is respectively connected to the first battery pack 130 and the second battery pack 140;

[0068] The first battery pack 130 is used to supply power to the first load 110;

[0069] The second battery pack 140 is used to supply power to the second load 120;

[0070] The bidirectional voltage converter 150 is used to control the energy transfer between the first battery pack 130 and the second battery pack 140.

[0071] Exemplarily, the first battery pack can be an energy-type battery pack; the first load can be other high-voltage loads of the vehicle, such as a voltage converter, an on-board charger, or a compressor, etc.; the second battery pack can be a power-type battery pack; the second load can be the power system of the vehicle.

[0072] Since the power-type battery pack can bring a higher power output, powering the drive assembly with the power-type battery pack can make the vehicle have strong driving performance; since the energy-type battery pack has more energy storage, powering other high-voltage loads with the energy-type battery pack can make the vehicle have a longer driving range. By using the two battery packs to supply power to different loads respectively, the vehicle can simultaneously have strong driving performance and a long driving range, improving the user experience. Moreover, energy transfer can also occur between the two battery packs to ensure the stable driving of the vehicle and improve the working efficiency.

[0073] Through the above technical solution, the vehicle can be powered by two battery packs, and energy transfer can also occur between the two battery packs, enabling the vehicle to have a strong power output while having sufficient energy, meeting the user's requirements for driving range and driving ability, and improving the user's driving experience.

[0074] In some embodiments, the bidirectional voltage converter is configured to: when the first state of charge of the first battery pack is within a first preset range and the second state of charge of the second battery pack is within a second preset range, enable the first battery pack and the second battery pack to transfer energy in a first energy transfer direction; when the first state of charge of the first battery pack is within a third preset range and the second state of charge of the second battery pack is within a fourth preset range, enable the first battery pack and the second battery pack to transfer energy in a second energy transfer direction. In this way, the transfer direction can be determined based on the state of charge of the battery packs, and then energy transfer can be carried out.

[0075] In some other embodiments, the first energy transfer direction is for the first battery pack to transfer energy to the second battery pack; the second energy transfer direction is for the second battery pack to transfer energy to the first battery pack.

[0076] Exemplarily, the bidirectional voltage converter can be controlled to perform step-down operation to transfer the energy of the first battery pack to the second battery pack; or, the bidirectional voltage converter can be controlled to perform step-up operation to transfer the energy of the second battery pack to the first battery pack. In this way, when the power of one battery pack is too low, it can be powered by another battery pack, enabling the two battery packs to work together, improving the endurance of the vehicle, and further enhancing the stability of vehicle operation.

[0077] In some embodiments, the bidirectional voltage converter is configured to: when the first state of charge of the first battery pack is within a fifth preset range and the second state of charge of the second battery pack is within a sixth preset range, the first battery pack and / or the second battery pack reduces energy output.

[0078] In some other embodiments, the first preset range of the first state of charge of the first battery pack is greater than the third preset range of the first state of charge of the first battery pack, and the third preset range of the first state of charge of the first battery pack is greater than the fifth preset range of the first state of charge of the first battery pack; the sixth preset range of the second state of charge of the second battery pack is less than the second preset range and the fourth preset range of the second state of charge of the second battery pack.

[0079] In some embodiments, the first preset range may include one or more of greater than or equal to 20%, greater than or equal to 10% and less than 20%, and greater than or equal to 5% and less than 10%; the third preset range may include one or more of greater than or equal to 5% and less than 10%, greater than or equal to 2% and less than 5%, and less than 2%; the fifth preset range may include less than 2%; the sixth preset range may include less than 10%.

[0080] It should be noted that the above preset range can be set by the user according to the battery pack status parameters, and no limitation is made here.

[0081] The process of energy transfer between the first battery pack and the second battery pack is illustrated by examples below. Among them, the first battery pack can be an energy pack, the second battery pack can be a power pack, the first state of charge is represented by A, and the second state of charge is represented by B, as shown in Table 1 below:

[0082] When the first preset range is A≥20%, the second preset range can include 60%>B≥40% or 40%>B≥10%; at this time, energy can be transferred from the energy pack to the power pack.

[0083] When the first preset range is 20%>A≥10%, the second preset range can include 40%>B≥10% or B<10%; at this time, energy can be transferred from the energy pack to the power pack.

[0084] When the first preset range is 10%>A≥5%, the second preset range can include B<10%; at this time, energy can be transferred from the energy pack to the power pack.

[0085] When the third preset range is 10%>A≥5%, the fourth preset range can include B≥60%; at this time, energy can be transferred from the power pack to the energy pack.

[0086] When the third preset range is 5%>A≥2%, the fourth preset range can include B≥60% or 60%>B≥40%; at this time, energy can be transferred from the power pack to the energy pack.

[0087] When the third preset range is A<2%, the fourth preset range can include one or more of B≥60%, 60%>B≥40%, and 40%>B≥10%; at this time, energy can be transferred from the power pack to the energy pack.

[0088] When the fifth preset range is A<2%, the sixth preset range can include B<10%; at this time, the energy output of the first battery pack and / or the second battery pack is reduced. Since the energy of both battery packs is at a low level in the above cases, there is no need to transfer energy, and the vehicle is controlled to enter a restricted driving state to protect the operation safety of the vehicle.

[0089] It should be noted that in the following cases, there is no need to transfer energy:

[0090] The first preset range is A≥20%, and the second preset range is B≥60%; the first preset range is 20%>A≥10%, and the second preset range is B≥60% or 60%>B≥40%; the first preset range is 10%>A≥5%, and the second preset range is 60%>B≥40% or 40%>B≥10%; the third preset range is 5%>A≥2%, and the fourth preset range is 40%>B≥10% or B<10%. In the above several cases, one of the two battery packs can provide energy for the corresponding load, so there is no need for energy transfer.

[0091] Table 1:

[0092]

[0093] In some embodiments, the bidirectional voltage converter can be configured to determine the second target state of charge range in which the second state of charge is located when determining the first target state of charge range in which the first state of charge is located; determine the direction of energy transfer according to the first target state of charge range and the second target state of charge range. Or when determining that the second state of charge is in the second target state of charge range, determine the first target state of charge range in which the first state of charge is located; determine the transfer direction according to the second target state of charge range and the first target state of charge range. In this way, the direction of energy transfer can be determined based on the state of charge ranges of the two battery packs, so as to be applicable to more application scenarios and improve work efficiency.

[0094] In some other embodiments, the determining the first target state of charge range in which the first state of charge is located may include: determining the first target state of charge range from a plurality of first preset state of charge ranges according to the first state of charge; and the determining the second target state of charge range in which the second state of charge is located may include: determining the second target state of charge range from a plurality of second preset state of charge ranges according to the second state of charge.

[0095] Exemplarily, the first preset state of charge range and the second preset state of charge range can be set by the user according to the battery model and usage conditions, which are not limited herein. In this way, the target state of charge range of the battery pack can be quickly determined through multiple preset state of charge ranges, improving work efficiency.

[0096] In some embodiments, it may also control the vehicle to enter a restricted driving state when determining that the first state of charge is less than or equal to the first preset state of charge threshold and the second state of charge is less than or equal to the second preset state of charge threshold.

[0097] Exemplarily, the first preset state of charge threshold may be in the range of 0% - 15%, such as 1%, 5%, 10% or 15%, etc.; the second preset state of charge threshold may be in the range of 0% - 5%, such as 1%, 2% or 5%, etc.; no limitation is made here.

[0098] It should be noted that, it can also be determined that the electric quantity of the battery pack of the vehicle is sufficient and no energy transmission is required when it is determined that the first state of charge is greater than or equal to the third preset state of charge threshold and the second state of charge is greater than or equal to the fourth preset state of charge threshold.

[0099] Exemplarily, the third preset state of charge threshold may be in the range of 55% - 75%, such as 55%, 60% or 75%, etc.; the fourth preset state of charge threshold may be in the range of 5% - 100%, such as 5%, 10%, 20%, 50% or 100%, etc.; no limitation is made here.

[0100] In some embodiments, the system can also implement the functions of the above vehicle power supply system through an electronic device. Exemplarily, the electronic device can be a controller, and the controller can be an independent device or integrated on other devices of the vehicle; for example, the controller can be a vehicle control unit VCU or a microprocessing unit MCU, etc., and no limitation is made here.

[0101] Figure 2 is according to Figure 1 the exemplary embodiment shows a block diagram of a vehicle power supply system. As Figure 2 shown, the system 100 may further include a first pre-charge circuit 160; the first pre-charge circuit 160 is respectively connected to the first battery pack 130 and the first load 110; the first pre-charge circuit 160 is used to pre-charge the first load 110.

[0102] Exemplarily, the first pre-charge circuit can pre-charge the first load before the energy transfer between the first battery pack and the second battery pack of the vehicle (i.e., after the vehicle enters the power-on state) to protect the first load. The first pre-charge circuit can be a high-voltage pre-charge circuit; the first pre-charge circuit can limit the effect of the charging current of the capacitor at the moment when the power supply is turned on to protect other elements of the circuit from being damaged by the instantaneous short-circuit current of the capacitor.

[0103] In some embodiments, as Figure 2As shown, the system 100 may further include a second pre-charge circuit 170; the second pre-charge circuit 170 is respectively connected to the second battery pack 140 and the second load 120; the second pre-charge circuit 170 is used to pre-charge the second load. Exemplarily, the second pre-charge circuit may be a high-voltage pre-charge circuit. The second pre-charge circuit may pre-charge the second load before the first battery pack and the second battery pack of the vehicle perform energy transfer (i.e., after the vehicle enters the powered-on state) to protect the second load.

[0104] It should be noted that the system 100 may include the first pre-charge circuit 160; or, include the second pre-charge circuit 170; or, include both the first pre-charge circuit 160 and the second pre-charge circuit 170, which is not limited herein.

[0105] In some embodiments, the system 100 may further include a DC charging interface; the DC charging interface may be respectively connected to the first battery pack and the second battery pack; the DC charging interface is used to access a power source. In this way, when the battery pack has a low power level, the vehicle can be charged by connecting a charging pile through the DC charging interface.

[0106] Figure 3 It is a block diagram of another vehicle power supply system shown according to an exemplary embodiment. As Figure 3 shown, the system may include a first load, a second load, a first battery pack, a second battery pack, a bidirectional voltage converter, a first pre-charge circuit, a second pre-charge circuit, a DC charging interface, and a plurality of contactors. The working process of the power supply system is illustrated below by way of example:

[0107] When the vehicle enters the powered-on state, the first pre-charge circuit pre-charges the first load. After the pre-charge is completed, the Ka- and Ka+ contactors are closed, and the first load is powered by the first battery pack. The second pre-charge circuit pre-charges the second load, the Kb- and Kb+ contactors are closed, and the second load is powered by the second battery pack. When it is determined that the vehicle has no faults, the vehicle is controlled to enter the driving state. At this time, according to the first state of charge of the first battery pack and the second state of charge of the second battery pack, the energy transfer between the first battery pack and the second battery pack can be controlled through the bidirectional voltage converter. And, when the power levels of the first battery pack and the second battery pack are low, the vehicle is controlled to enter a restricted driving state, so that it can be charged by connecting a charging pile through the DC charging interface.

[0108] Through the above technical solution, the vehicle can be powered by two battery packs, and energy transfer can also be carried out between the two battery packs, enabling the vehicle to have sufficient energy and strong power output at the same time, meeting the user's requirements for driving range and driving ability, and improving the user's driving experience.

[0109] Figure 4 It is a flowchart of a vehicle control method shown according to an exemplary embodiment. As Figure 4 shown, this method is applied to the above vehicle control system, which includes a first load, a second load, a first battery pack, a second battery pack, and a bidirectional voltage converter; the first load is connected to the first battery pack; the second load is connected to the second battery pack; the bidirectional voltage converter is respectively connected to the first battery pack and the second battery pack; this method may include:

[0110] S401. Control the energy transfer between the first battery pack and the second battery pack through the bidirectional voltage converter according to the first state of charge of the first battery pack and the second state of charge of the second battery pack.

[0111] Wherein, the first battery pack is used to supply power to the first load, and the second battery pack is used to supply power to the second load.

[0112] Through the above technical solution, the vehicle can be powered by two battery packs, and energy transfer can also be carried out between the two battery packs, enabling the vehicle to have sufficient energy and strong power output at the same time, meeting the user's requirements for driving range and driving ability, and improving the user's driving experience.

[0113] Optionally, controlling the energy transfer between the first battery pack and the second battery pack through the bidirectional voltage converter includes:

[0114] Through the bidirectional voltage converter, when the first state of charge of the first battery pack is within a first preset range and the second state of charge of the second battery pack is within a second preset range, enable the first battery pack and the second battery pack to perform energy transfer in a first energy transfer direction;

[0115] When the first state of charge of the first battery pack is within a third preset range and the second state of charge of the second battery pack is within a fourth preset range, enable the first battery pack and the second battery pack to perform energy transfer in a second energy transfer direction.

[0116] Optionally, the first energy transfer direction is for the first battery pack to transfer energy to the second battery pack; the second energy transfer direction is for the second battery pack to transfer energy to the first battery pack.

[0117] Optionally, controlling the energy transfer between the first battery pack and the second battery pack through the bidirectional voltage converter includes:

[0118] Through the bidirectional voltage converter, when the first state of charge of the first battery pack is within a fifth preset range and the second state of charge of the second battery pack is within a sixth preset range, the first battery pack and / or the second battery pack reduces energy output.

[0119] Optionally, a first preset range of the first state of charge of the first battery pack is greater than a third preset range of the first state of charge of the first battery pack, and the third preset range of the first state of charge of the first battery pack is greater than a fifth preset range of the first state of charge of the first battery pack;

[0120] The sixth preset range of the second state of charge of the second battery pack is less than the second preset range and the fourth preset range of the second state of charge of the second battery pack.

[0121] Optionally, the first preset range includes one or more of greater than or equal to 20%, greater than or equal to 10% and less than 20%, and greater than or equal to 5% and less than 10%;

[0122] The third preset range includes one or more of greater than or equal to 5% and less than 10%, greater than or equal to 2% and less than 5%, and less than 2%;

[0123] The fifth preset range includes less than 2%;

[0124] The sixth preset range includes less than 10%.

[0125] Figure 5 is a flowchart of a method for vehicle control shown according to an exemplary embodiment. As Figure 5 shown, the system further includes a first precharge circuit; the first precharge circuit is respectively connected to the first battery pack and the first load; the method may further include:

[0126] S402. Precharge the first load through the first precharge circuit.

[0127] Wherein, the above step S402 may be to precharge the first load through the first precharge circuit before the first battery pack and the second battery pack of the vehicle perform energy transfer (i.e., after the vehicle enters the power-on state), so as to ensure that the first load is not damaged by a short-time large current.

[0128] Figure 6 is a flowchart of a method for vehicle control shown according to an exemplary embodiment. As Figure 6As shown, the system further includes a second pre-charge circuit; the second pre-charge circuit is respectively connected to the second battery pack and the second load; the method may further include:

[0129] S403. Pre-charge the second load through the second pre-charge circuit.

[0130] Optionally, the second load is the power system of the vehicle.

[0131] Among them, the above step S403 can be to pre-charge the second load through the second pre-charge circuit before the first battery pack and the second battery pack of the vehicle perform energy transfer (that is, after the vehicle enters the power-on state), so as to ensure that the second load is not damaged by a short-time large current.

[0132] It should be noted that the execution order of the above steps S402 and S403 can be to execute step S402 first and then S403; or, to execute step S403 first and then S402; or, to execute steps S402 and S403 simultaneously, which is not limited here.

[0133] Figure 7 is a block diagram of an electronic device shown according to an exemplary embodiment. The electronic device 700 can execute the functions of the above vehicle power supply system. As Figure 7 shown, the electronic device 700 may include: a processor 701, a memory 702. The electronic device 700 may further include one or more of a multimedia component 703, an input / output interface 704, and a communication component 705.

[0134] Among them, the processor 701 is used to control the overall operation of the electronic device 700 to complete all or part of the above steps. The memory 702 is used to store various types of data to support the operation of the electronic device 700. Such data may include, for example, instructions for any application or method operating on the electronic device 700, as well as application-related data, such as contact data, sent and received messages, pictures, audio, video, and so on. The memory 702 can be implemented by any type of volatile or non-volatile storage device or a combination thereof, such as Static Random Access Memory (SRAM), Electrically Erasable Programmable Read-Only Memory (EEPROM), Erasable Programmable Read-Only Memory (EPROM), Programmable Read-Only Memory (PROM), Read-Only Memory (ROM), magnetic memory, flash memory, magnetic disk, or optical disc. The multimedia component 703 may include a screen and an audio component. Among them, the screen can be, for example, a touch screen, and the audio component is used to output and / or input audio signals. For example, the audio component may include a microphone, and the microphone is used to receive external audio signals. The received audio signals can be further stored in the memory 702 or sent through the communication component 705. The audio component also includes at least one speaker for outputting audio signals. The input / output interface 704 provides an interface between the processor 701 and other interface modules, and the above other interface modules can be a keyboard, a mouse, buttons, etc. These buttons can be virtual buttons or physical buttons. The communication component 705 is used for wired or wireless communication between the electronic device 700 and other devices. Wireless communication, such as Wi-Fi, Bluetooth, Near Field Communication (NFC), 2G, 3G, 4G, NB-IOT, eMTC, or other 5G, etc., or a combination of one or more of them, is not limited here. Therefore, the corresponding communication component 705 may include: a Wi-Fi module, a Bluetooth module, an NFC module, and so on.

[0135] In an exemplary embodiment, the electronic device 700 can be implemented by one or more application specific integrated circuits (ASICs), digital signal processors (DSPs), digital signal processing devices (DSPDs), programmable logic devices (PLDs), field programmable gate arrays (FPGAs), controllers, microcontrollers, microprocessors, or other electronic components, and is used to implement the functions of the above-mentioned vehicle power supply system.

[0136] In another exemplary embodiment, a computer-readable storage medium including program instructions is further provided. When the program instructions are executed by a processor, the functions of the above-mentioned vehicle power supply system are implemented. For example, the computer-readable storage medium can be the above-mentioned memory 702 including program instructions, and the above-mentioned program instructions can be executed by the processor 701 of the electronic device 700 to implement the functions of the above-mentioned vehicle power supply system.

[0137] Figure 8 is a block diagram of a vehicle control system shown according to an exemplary embodiment. As Figure 8 shown, the system 800 can include a first load 810, a second load 820, a first battery pack 830, a second battery pack 840, a bidirectional voltage converter 850, and an electronic device 860; the first load 810 is connected to the first battery pack 830; the second load 820 is connected to the second battery pack 840; the bidirectional voltage converter 850 is respectively connected to the first battery pack 830 and the second battery pack 840; the electronic device 860 is respectively connected to the bidirectional voltage converter 850, the first battery pack 830, and the second battery pack 840.

[0138] Figure 9 is a block diagram of a vehicle shown according to an exemplary embodiment. As Figure 9 shown, the vehicle 900 can include the above-mentioned vehicle power supply system 100 or the above-mentioned vehicle control system 800.

[0139] In summary, the present disclosure provides a power supply method, a power supply system, an electronic device, a control system and a vehicle for a vehicle; the power supply system includes a first load, a second load, a first battery pack, a second battery pack and a bidirectional voltage converter; the first load is connected to the first battery pack; the second load is connected to the second battery pack; the bidirectional voltage converter is respectively connected to the first battery pack and the second battery pack; the first battery pack is used to supply power to the first load; the second battery pack is used to supply power to the second load; the bidirectional voltage converter is used to control the energy transfer between the first battery pack and the second battery pack; through the above technical solution, the vehicle can be powered by two battery packs, and energy transfer can also be carried out between the two battery packs, so that on the premise that the vehicle has sufficient energy, it also has strong power output, meeting the requirements of users for cruising range and driving ability, and improving the driving experience of users.

[0140] The preferred embodiments of the present disclosure have been described in detail above with reference to the accompanying drawings. However, the present disclosure is not limited to the specific details in the above embodiments. Within the scope of the technical concept of the present disclosure, various simple modifications can be made to the technical solutions of the present disclosure, and these simple modifications all belong to the protection scope of the present disclosure.

[0141] In addition, it should be noted that, in the various specific technical features described in the above specific embodiments, they can be combined in any appropriate manner without contradiction. To avoid unnecessary repetition, the present disclosure will not separately describe various possible combination methods.

[0142] In addition, any combination can be made between different embodiments of the present disclosure, as long as it does not violate the idea of the present disclosure, it should also be regarded as the content disclosed by the present disclosure.

Claims

1. A power supply system for a vehicle, characterized in that, the power supply system includes a first load, a second load, a first battery pack, a second battery pack, and a bidirectional voltage converter; the first load is connected to the first battery pack; the second load is connected to the second battery pack; the bidirectional voltage converter is respectively connected to the first battery pack and the second battery pack; the first battery pack is used to supply power to the first load; the second battery pack is used to supply power to the second load; the bidirectional voltage converter is used to control the energy transfer between the first battery pack and the second battery pack.

2. The power supply system according to claim 1, characterized in that, the bidirectional voltage converter is configured to: when the first state of charge of the first battery pack is within a first preset range and the second state of charge of the second battery pack is within a second preset range, enable the first battery pack and the second battery pack to perform energy transfer in a first energy transfer direction; when the first state of charge of the first battery pack is within a third preset range and the second state of charge of the second battery pack is within a fourth preset range, enable the first battery pack and the second battery pack to perform energy transfer in a second energy transfer direction.

3. The power supply system according to claim 2, characterized in that, the first energy transfer direction is for the first battery pack to transfer energy to the second battery pack; the second energy transfer direction is for the second battery pack to transfer energy to the first battery pack.

4. The power supply system according to claim 1, characterized in that, when the first state of charge of the first battery pack is within a fifth preset range and the second state of charge of the second battery pack is within a sixth preset range, the first battery pack and / or the second battery pack reduces energy output.

5. The power supply system according to any one of claims 1-4, characterized in that, the first preset range of the first state of charge of the first battery pack is greater than the third preset range of the first state of charge of the first battery pack, and the third preset range of the first state of charge of the first battery pack is greater than the fifth preset range of the first state of charge of the first battery pack; the sixth preset range of the second state of charge of the second battery pack is less than the second preset range and the fourth preset range of the second state of charge of the second battery pack.

6. The power supply system according to claim 5, characterized in that, the first preset range includes one or more of greater than or equal to 20%, greater than or equal to 10% and less than 20%, and greater than or equal to 5% and less than 10%; the third preset range includes one or more of greater than or equal to 5% and less than 10%, greater than or equal to 2% and less than 5%, and less than 2%; the fifth preset range includes less than 2%; the sixth preset range includes less than 10%.

7. The power supply system according to claim 1, characterized in that, the power supply system further includes a first pre-charge circuit; the first pre-charge circuit is respectively connected to the first battery pack and the first load; The first pre-charge circuit is used to pre-charge the first load; and / or, The power supply system further includes a second pre-charge circuit; the second pre-charge circuit is respectively connected to the second battery pack and the second load; The second pre-charge circuit is used to pre-charge the second load.

8. The power supply system according to claim 1, wherein, The second load is the power system of the vehicle.

9. A power supply method for a vehicle, wherein, Applied to the power supply system of the vehicle, the system includes a first load, a second load, a first battery pack, a second battery pack and a bidirectional voltage converter; the first load is connected to the first battery pack; The second load is connected to the second battery pack; the bidirectional voltage converter is respectively connected to the first battery pack and the second battery pack; the method includes: According to the first state of charge of the first battery pack and the second state of charge of the second battery pack, control the energy transfer between the first battery pack and the second battery pack through the bidirectional voltage converter; wherein, the first battery pack is used to supply power to the first load, and the second battery pack is used to supply power to the second load.

10. An electronic device, wherein, including: A memory, on which a computer program is stored; A processor, configured to execute the computer program in the memory to implement the functions of the vehicle power supply system according to any one of claims 1-8.

11. A control system for a vehicle, wherein, including the electronic device according to claim 10, and / or, including the vehicle power supply system according to any one of claims 1-8.

12. The control system according to claim 11, wherein, The electronic device is respectively electrically connected to the bidirectional voltage converter, the first battery pack and the second battery pack.

13. A vehicle, wherein, The vehicle includes the vehicle power supply system according to any one of claims 1-8 or the vehicle control system according to any one of claims 11-12.

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