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

Abstract

A power supply system (100), comprising 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), and the second load (120) is connected to the second battery pack (140). The bidirectional voltage converter (150) is connected to the first battery pack (130) and the second battery pack (140), separately. The first battery pack (130) is used for supplying power to the first load (110), and the second battery pack (140) is used for supplying power to the second load (120). The bidirectional voltage converter (150) is used for controlling energy transfer between the first battery pack (130) and the second battery pack (140). In the system, a vehicle is powered by two battery packs, and energy transfer can be conducted between the two battery packs, so that the vehicle has enough energy and high power output, thereby meeting the requirements of a user for the range and the driving capacity at the same time. The present application further comprises a vehicle power supply method, an electronic device, a vehicle control system, and a vehicle.

Description

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

[0001] CROSS-REFERENCE TO RELATED APPLICATIONS

[0002] This disclosure claims priority to a Chinese patent application filed with the Patent Office of China on November 30, 2023, with application number 202311655845.X and entitled “Power supply method, power supply system, electronic device, control system and vehicle for a vehicle,” the entire contents of which are incorporated by reference into this disclosure. Technical Field

[0003] The present disclosure relates to the field of vehicle control technology, and in particular, to a vehicle power supply method, a power supply system, an electronic device, a control system, and a vehicle. Background Art

[0004] With the development of vehicle technology, people have higher requirements for the driving experience. On the one hand, people want vehicles with a long range; on the other hand, they want vehicles with strong driving performance; and more importantly, they want vehicles to maintain optimal performance in all weather conditions.

[0005] In order to solve the above problems, on the one hand, the vehicle's power battery needs to have a higher energy density to provide more energy for the vehicle under the premise of the same volume; on the other hand, the vehicle's power battery needs to have a higher power density to provide strong power output in a short time.

[0006] Summary of the Invention

[0007] The present disclosure aims to provide a vehicle power supply method, a power supply system, an electronic device, a control system and a vehicle, so as to improve the working efficiency of a vehicle battery pack.

[0008] To achieve the above objectives, in a first aspect, the present disclosure provides a power supply system for a vehicle, the power supply system comprising 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 connected to the first battery pack and the second battery pack, respectively;

[0009] The first battery pack is used to supply power to the first load;

[0010] The second battery pack is used to supply power to the second load;

[0011] The bidirectional voltage converter is used to control energy transmission between the first battery pack and the second battery pack.

[0012] Optionally, the bidirectional voltage converter is configured as:

[0013] 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, the first battery pack and the second battery pack are configured to perform energy transfer in a first energy transfer direction;

[0014] 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, the first battery pack and the second battery pack are enabled to perform energy transmission in a second energy transmission direction.

[0015] Optionally, the first energy transmission direction is energy transmission from the first battery pack to the second battery pack; the second energy transmission direction is energy transmission from the second battery pack to the first battery pack.

[0016] Optionally, the bidirectional voltage converter is configured as:

[0017] 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.

[0018] 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;

[0019] The sixth preset range of the second state of charge of the second battery pack is smaller than the second preset range and the fourth preset range of the second state of charge of the second battery pack.

[0020] 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%;

[0021] 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%;

[0022] The fifth preset range includes less than 2%;

[0023] The sixth preset range includes less than 10%.

[0024] Optionally, the power supply system further includes a first pre-charging circuit; the first pre-charging circuit is connected to the first battery pack and the first load respectively;

[0025] The first pre-charging circuit is used to pre-charge the first load; and / or

[0026] The power supply system further includes a second pre-charging circuit; the second pre-charging circuit is connected to the second battery pack and the second load respectively;

[0027] The second pre-charging circuit is used to pre-charge the second load.

[0028] Optionally, the second load is a power system of the vehicle.

[0029] In a second aspect, the present disclosure provides a vehicle power supply method, which is applied to a vehicle power supply system. 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; and the bidirectional voltage converter is connected to the first battery pack and the second battery pack, respectively. The method includes:

[0030] Based on a first state of charge of the first battery pack and a second state of charge of the second battery pack, energy transfer between the first battery pack and the second battery pack is controlled by the bidirectional voltage converter; wherein the first battery pack is used to power the first load, and the second battery pack is used to power the second load.

[0031] Optionally, controlling energy transmission between the first battery pack and the second battery pack by using the bidirectional voltage converter includes:

[0032] using the bidirectional voltage converter to enable the first battery pack and the second battery pack to perform energy transmission in a first energy transmission direction 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;

[0033] 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, the first battery pack and the second battery pack are enabled to perform energy transmission in a second energy transmission direction.

[0034] Optionally, the first energy transmission direction is energy transmission from the first battery pack to the second battery pack; the second energy transmission direction is energy transmission from the second battery pack to the first battery pack.

[0035] Optionally, controlling energy transmission between the first battery pack and the second battery pack by using the bidirectional voltage converter includes:

[0036] 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.

[0037] 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;

[0038] The sixth preset range of the second state of charge of the second battery pack is smaller than the second preset range and the fourth preset range of the second state of charge of the second battery pack.

[0039] 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%;

[0040] 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%;

[0041] The fifth preset range includes less than 2%;

[0042] The sixth preset range includes less than 10%.

[0043] Optionally, the system further includes a first pre-charging circuit; the first pre-charging circuit is connected to the first battery pack and the first load respectively; and the method further includes:

[0044] The first load is precharged through the first precharging circuit.

[0045] Optionally, the system further includes a second pre-charging circuit; the second pre-charging circuit is connected to the second battery pack and the second load respectively; and the method further includes:

[0046] The second load is precharged through the second precharging circuit.

[0047] Optionally, the second load is a power system of the vehicle.

[0048] In a third aspect, the present disclosure provides an electronic device, comprising:

[0049] a memory having a computer program stored thereon;

[0050] A processor is used to execute the computer program in the memory to implement the functions of the vehicle power supply system described in the first aspect above.

[0051] In a fourth aspect, the present disclosure provides a vehicle control system, comprising the electronic device described in the third aspect above, and / or the vehicle power supply system described in the first aspect above.

[0052] Optionally, the electronic device is connected to the bidirectional voltage converter, the first battery pack and the second battery pack respectively.

[0053] In a fifth aspect, the present disclosure provides a vehicle, comprising the vehicle power supply system described in the first aspect or the vehicle control system described in the fourth aspect.

[0054] Through the above technical solution, the vehicle can be powered by two battery packs, and energy can be transmitted between the two battery packs, so that the vehicle has sufficient energy and strong power output at the same time, meeting the user's requirements for cruising range and driving capability, and improving the user's driving experience.

[0055] Other features and advantages of the present disclosure will be described in detail in the following detailed description. BRIEF DESCRIPTION OF THE DRAWINGS

[0056] The accompanying drawings are used to provide a further understanding of the present disclosure and constitute a part of the specification. Together with the following detailed description, they are used to explain the present disclosure but do not constitute a limitation of the present disclosure. In the accompanying drawings:

[0057] FIG1 is a block diagram showing a power supply system for a vehicle according to an exemplary embodiment.

[0058] FIG. 2 is a block diagram showing a power supply system for a vehicle according to the exemplary embodiment of FIG. 1 .

[0059] FIG3 is a block diagram showing another power supply system for a vehicle according to an exemplary embodiment.

[0060] FIG4 is a flowchart showing a method for powering a vehicle according to an exemplary embodiment.

[0061] FIG. 5 is a flow chart showing a method for powering a vehicle according to the exemplary embodiment of FIG. 4 .

[0062] FIG. 6 is a flow chart showing another method for supplying power to a vehicle according to the exemplary embodiment of FIG. 5 .

[0063] Fig. 7 is a block diagram showing an electronic device according to an exemplary embodiment.

[0064] FIG8 is a block diagram showing a control system of a vehicle according to an exemplary embodiment.

[0065] FIG9 is a block diagram of a vehicle according to an exemplary embodiment. DETAILED DESCRIPTION

[0066] The following describes the specific embodiments of the present disclosure in detail with reference to the accompanying drawings. It should be understood that the specific embodiments described herein are only used to illustrate and explain the present disclosure and are not intended to limit the present disclosure.

[0067] First, the application scenarios of the present disclosure are introduced. The present disclosure is applied in the scenario where a battery pack is used to power a vehicle load. In related technologies, a single battery pack can directly power a vehicle load. For example, the battery pack can be a power battery, such as 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.

[0068] With the advancement of vehicle technology, people have higher expectations for the driving experience. On the one hand, people want vehicles with high mileage; on the other hand, they want vehicles with strong driving performance; and most importantly, they want vehicles to maintain optimal performance in all weather conditions. However, energy-type power batteries can only provide a high range for vehicles, and power-type power batteries can only provide strong driving performance. It can be seen that powering the load with only a single battery pack cannot meet people's growing driving needs.

[0069] In order to solve the above problems, the present disclosure provides a vehicle power supply method, power supply system, electronic device, control system and 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 connected to the first battery pack and the second battery pack respectively; 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 transmission 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 can also be transmitted between the two battery packs, so that the vehicle has sufficient energy and strong power output at the same time, meeting the user's requirements for cruising range and driving capability, and improving the user's driving experience.

[0070] Several embodiments of the power supply system for the vehicle described above are described below.

[0071] Example 1:

[0072] As shown in Figure 1, a block diagram of a vehicle power supply system according to an exemplary embodiment is shown. The vehicle power supply 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; and the bidirectional voltage converter 150 is connected to the first battery pack 130 and the second battery pack 140, respectively.

[0073] The first battery pack 130 is used to supply power to the first load 110;

[0074] The second battery pack 140 is used to supply power to the second load 120;

[0075] The bidirectional voltage converter 150 is used to control energy transmission between the first battery pack 130 and the second battery pack 140 .

[0076] For example, the first battery pack may be an energy-type battery pack; the first load may be other high-voltage loads of the vehicle, such as a voltage converter, an on-board charger, or a compressor; the second battery pack may be a power-type battery pack; and the second load may be the vehicle's power system.

[0077] Because the power battery pack delivers higher power output, powering the drive assembly through it provides robust vehicle driving performance. Because the energy battery pack stores more energy, it can be used to power other high-voltage loads, extending the vehicle's driving range. By powering different loads with two battery packs, the vehicle achieves both robust driving performance and a long driving range, enhancing the user experience. Furthermore, energy can be transferred between the two battery packs, ensuring stable driving and improving efficiency.

[0078] Through the above technical solution, the vehicle can be powered by two battery packs, and energy can be transmitted between the two battery packs, so that the vehicle has sufficient energy and strong power output at the same time, meeting the user's requirements for cruising range and driving capability, and improving the user's driving experience.

[0079] Example 2:

[0080] In some embodiments, the bidirectional voltage converter of Embodiment 1 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, cause the first battery pack and the second battery pack to perform energy transfer in a first energy transfer direction; and 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, cause the first battery pack and the second battery pack to perform energy transfer in a second energy transfer direction. In this way, the transfer direction can be determined based on the state of charge of the battery pack, thereby performing energy transfer.

[0081] In other embodiments, the first energy transmission direction is energy transmission from the first battery pack to the second battery pack; the second energy transmission direction is energy transmission from the second battery pack to the first battery pack.

[0082] For example, the bidirectional voltage converter can be controlled to step down the voltage to transfer energy from the first battery pack to the second battery pack; or it can be controlled to step up the voltage to transfer energy from the second battery pack to the first battery pack. In this way, if the power of one battery pack is too low, the other battery pack can be used to provide power, achieving coordinated operation of the two battery packs, improving the vehicle's endurance and, in turn, its operational stability.

[0083] In some embodiments, the bidirectional voltage converter is configured to reduce energy output of the first battery pack and / or the second battery pack 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.

[0084] In 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 smaller than the second preset range and the fourth preset range of the second state of charge of the second battery pack.

[0085] 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%.

[0086] It should be noted that the above preset range can be set by the user according to the battery pack status parameters and is not limited here.

[0087] The following example illustrates the process of energy transmission between a first battery pack and a second battery pack. The first battery pack may be an energy pack, the second battery pack may 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:

[0088] When the first preset range is A≥20%, the second preset range may include 60%>B≥40% or 40%>B≥10%; in this case, energy can be transmitted to the power pack through the energy pack.

[0089] When the first preset range is 20%>A≥10%, the second preset range may include 40%>B≥10% or B<10%; at this time, energy can be transmitted to the power pack through the energy pack.

[0090] When the first preset range is 10%>A≥5%, the second preset range may include B<10%; in this case, energy can be transmitted to the power pack via the energy pack.

[0091] When the third preset range is 10%>A≥5%, the fourth preset range may include B≥60%; at this time, energy can be transmitted to the energy pack through the power pack.

[0092] When the third preset range is 5%>A≥2%, the fourth preset range may include B≥60% or 60%>B≥40%; in this case, energy can be transmitted to the energy pack through the power pack.

[0093] When the third preset range is A<2%, the fourth preset range may include one or more of B≥60%, 60%>B≥40% and 40%>B≥10%; at this time, energy can be transmitted to the energy pack through the power pack.

[0094] If the fifth preset range is A < 2%, the sixth preset range may include B < 10%. In this case, the first battery pack and / or the second battery pack reduces energy output. Since the energy levels of both battery packs are at a low level in this case, no energy transfer is required, and the vehicle is controlled to enter a restricted driving state to protect vehicle operating safety.

[0095] It should be noted that in the following cases, no energy transmission is required:

[0096] 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 cases, since one of the two battery packs can provide energy for the corresponding load, energy transmission is not required.

[0097] Table 1:

[0098] In some embodiments, the bidirectional voltage converter can be configured to, upon determining that the first state of charge is within a first target state of charge range, determine the second state of charge is within a second target state of charge range; and determine the direction of energy transfer based on the first target state of charge range and the second target state of charge range. Alternatively, upon determining that the second state of charge is within a second target state of charge range, determine the first target state of charge range; and determine the transfer direction based on 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, thereby being applicable to more application scenarios and improving work efficiency.

[0099] In other embodiments, the above-mentioned determination of the first target state of charge range for the first state of charge may include: determining the first target state of charge range from a plurality of first preset state of charge ranges based on the first state of charge; and the above-mentioned determination of the second target state of charge range for the second state of charge may include: determining the second target state of charge range from a plurality of second preset state of charge ranges based on the second state of charge.

[0100] For example, the first and second preset SOC ranges can be set by the user based on the battery model and usage, and are not limited herein. In this way, the target SOC range of the battery pack can be quickly determined using multiple preset SOC ranges, thereby improving work efficiency.

[0101] In some embodiments, the vehicle may be controlled to enter a restricted driving state when it is determined that the first state of charge is less than or equal to a first preset state of charge threshold and the second state of charge is less than or equal to a second preset state of charge threshold.

[0102] For example, the first preset state of charge threshold can be in the range of 0%-15%, such as 1%, 5%, 10% or 15%, etc.; the second preset state of charge threshold can be in the range of 0%-5%, such as 1%, 2% or 5%, etc.; no limitation is given here.

[0103] It should be noted that, 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, it can be determined that the battery pack of the vehicle has sufficient power and no energy transmission is required.

[0104] For example, the third preset state of charge threshold can be in the range of 55%-75%, such as 55%, 60% or 75%, etc.; the fourth preset state of charge threshold can be in the range of 5%-100%, such as 5%, 10%, 20%, 50% or 100%, etc.; no limitation is given here.

[0105] In some embodiments, the system can also implement the functions of the vehicle's power supply system through an electronic device. For example, the electronic device can be a controller, which can be a standalone device or integrated into other devices in the vehicle; for example, the controller can be a vehicle control unit (VCU) or a microprocessor unit (MCU), etc., although this is not limited here.

[0106] Example 3:

[0107] FIG2 is a block diagram of a vehicle power supply system according to the exemplary embodiment of FIG1 . As shown in FIG2 , the system 100 may further include a first pre-charging circuit 160 ; the first pre-charging circuit 160 is connected to the first battery pack 130 and the first load 110 , respectively; the first pre-charging circuit 160 is used to pre-charge the first load 110 .

[0108] For example, the first pre-charging circuit can pre-charge the first load before the first and second battery packs of the vehicle transfer energy (i.e., after the vehicle enters the power-on state) to protect the first load. The first pre-charging circuit can be a high-voltage pre-charging circuit; the first pre-charging circuit can limit the effect of the charging current on the capacitor at the moment of power-on to protect other circuit components from damage due to the instantaneous short-circuit current of the capacitor.

[0109] In some embodiments, as shown in FIG2 , the system 100 may further include a second pre-charging circuit 170; the second pre-charging circuit 170 is connected to the second battery pack 140 and the second load 120, respectively; the second pre-charging circuit 170 is used to pre-charge the second load 120. For example, the second pre-charging circuit may be a high-voltage pre-charging circuit. The second pre-charging 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 power-on state) to protect the second load.

[0110] It should be noted that the system 100 may include the first pre-charging circuit 160 ; or include the second pre-charging circuit 170 ; or include both the first pre-charging circuit 160 and the second pre-charging circuit 170 , which is not limited here.

[0111] In some embodiments, the system 100 may further include a DC charging interface that can be connected to the first battery pack and the second battery pack, respectively, and configured to connect to a power source. Thus, when the battery pack power level is low, the vehicle can be charged by connecting to a charging station via the DC charging interface.

[0112] Figure 3 is a block diagram of another vehicle power supply system according to an exemplary embodiment. As shown in Figure 3, 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-charging circuit, a second pre-charging circuit, a DC charging interface, and multiple contactors. The following example illustrates the working process of the power supply system:

[0113] When the vehicle enters the power-on state, the first pre-charging circuit pre-charges the first load. After the pre-charging is completed, the Ka- and Ka+ contactors are energized to supply power to the first load through the first battery pack. The second pre-charging circuit pre-charges the second load, energizes the Kb- and Kb+ contactors, and supplies power to the second load through 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, the energy transfer between the first battery pack and the second battery pack can be controlled by 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. Furthermore, when the power levels of the first battery pack and the second battery pack are low, the vehicle is controlled to enter the restricted driving state so that it can be connected to the charging pile for charging through the DC charging interface.

[0114] Through the above technical solution, the vehicle can be powered by two battery packs, and energy can be transmitted between the two battery packs, so that the vehicle has sufficient energy and strong power output at the same time, meeting the user's requirements for cruising range and driving capability, and improving the user's driving experience.

[0115] Example 4:

[0116] Figure 4 is a flow chart of a vehicle control method according to an exemplary embodiment. As shown in Figure 4, the method is applied to the vehicle control system described above, 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; and the bidirectional voltage converter is connected to the first battery pack and the second battery pack, respectively. The method may include:

[0117] S401 : Control energy transmission between the first battery pack and the second battery pack through the bidirectional voltage converter according to a first state of charge of the first battery pack and a second state of charge of the second battery pack.

[0118] 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.

[0119] Through the above technical solution, the vehicle can be powered by two battery packs, and energy can be transmitted between the two battery packs, so that the vehicle has sufficient energy and strong power output at the same time, meeting the user's requirements for cruising range and driving capability, and improving the user's driving experience.

[0120] Optionally, controlling energy transmission between the first battery pack and the second battery pack through the bidirectional voltage converter includes:

[0121] By means of 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, the first battery pack and the second battery pack are enabled to perform energy transmission in a first energy transmission direction;

[0122] 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, the first battery pack and the second battery pack are enabled to perform energy transmission in a second energy transmission direction.

[0123] Optionally, the first energy transmission direction is energy transmission from the first battery pack to the second battery pack; the second energy transmission direction is energy transmission from the second battery pack to the first battery pack.

[0124] Optionally, controlling energy transmission between the first battery pack and the second battery pack through the bidirectional voltage converter includes:

[0125] 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.

[0126] 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;

[0127] The sixth preset range of the second state of charge of the second battery pack is smaller than the second preset range and the fourth preset range of the second state of charge of the second battery pack.

[0128] 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%;

[0129] 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%;

[0130] The fifth preset range includes less than 2%;

[0131] The sixth preset range includes less than 10%.

[0132] FIG5 is a flow chart of a vehicle control method according to an exemplary embodiment. As shown in FIG5 , the system further includes a first pre-charging circuit; the first pre-charging circuit is connected to the first battery pack and the first load respectively; the method may further include:

[0133] S402: Pre-charge the first load through the first pre-charging circuit.

[0134] In which, the above-mentioned step S402 can be to pre-charge the first load through the first pre-charging circuit before the first battery pack and the second battery pack of the vehicle transmit energy (that is, after the vehicle enters the power-on state) to ensure that the first load is not damaged by a short-term large current.

[0135] FIG6 is a flow chart of a vehicle control method according to an exemplary embodiment. As shown in FIG6 , the system further includes a second pre-charging circuit; the second pre-charging circuit is connected to the second battery pack and the second load respectively; the method may further include:

[0136] S403: Precharge the second load through the second precharge circuit.

[0137] Optionally, the second load is a power system of the vehicle.

[0138] In which, the above-mentioned step S403 can be to pre-charge the second load through the second pre-charging circuit before the first battery pack and the second battery pack of the vehicle transmit energy (that is, after the vehicle enters the power-on state) to ensure that the second load is not damaged by a short-term large current.

[0139] It should be noted that the execution order of the above steps S402 and S403 can be to execute step S402 first and then execute S403; or, execute step S402 first and then execute S403; or, execute steps S402 and S403 at the same time, which is not limited here.

[0140] Embodiment 5:

[0141] Figure 7 is a block diagram of an electronic device according to an exemplary embodiment. This electronic device 700 can perform the functions of the vehicle power supply system described above. As shown in Figure 7 , this electronic device 700 may include a processor 701 and a memory 702 . This electronic device 700 may also include one or more of a multimedia component 703 , an input / output interface 704 , and a communication component 705 .

[0142] 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. For example, this data may include instructions for any application or method operating on the electronic device 700, as well as application-related data, such as contact information, sent and received messages, pictures, audio, video, etc. 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 storage, flash memory, magnetic disk or optical disk. The multimedia component 703 may include a screen and an audio component. The screen may 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 for receiving external audio signals. The received audio signal may 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-mentioned other interface modules may be a keyboard, a mouse, buttons, etc. These buttons may 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, etc.

[0143] 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 to implement the functions of the power supply system of the above-mentioned vehicle.

[0144] Example 6:

[0145] In another exemplary embodiment, a computer-readable storage medium including program instructions is also provided. When executed by a processor, the program instructions implement the functions of the vehicle power supply system described above. For example, the computer-readable storage medium may be the aforementioned memory 702 including the program instructions. The program instructions may be executed by the processor 701 of the electronic device 700 to implement the functions of the vehicle power supply system described above.

[0146] Embodiment seven:

[0147] Figure 8 is a block diagram of a vehicle control system according to an exemplary embodiment. As shown in Figure 8, the system 800 may 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 connected to the first battery pack 830 and the second battery pack 840 respectively; and the electronic device 860 is connected to the bidirectional voltage converter 850, the first battery pack 830, and the second battery pack 840 respectively.

[0148] Embodiment 8:

[0149] Fig. 9 is a block diagram of a vehicle according to an exemplary embodiment. As shown in Fig. 9 , the vehicle 900 may include the vehicle power supply system 100 or the vehicle control system 800 described above.

[0150] In summary, the present disclosure provides a power supply method, power supply system, electronic device, control system and 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 connected to the first battery pack and the second battery pack respectively; 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 transmission 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 can also be transmitted between the two battery packs, so that the vehicle has sufficient energy and strong power output at the same time, meeting the user's requirements for cruising range and driving capability, and improving the user's driving experience.

[0151] The preferred embodiments of the present disclosure are described in detail above in conjunction with the accompanying drawings. However, the present disclosure is not limited to the specific details of the above embodiments. Within 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 fall within the scope of protection of the present disclosure.

[0152] It should also be noted that the various specific technical features described in the above specific embodiments can be combined in any appropriate manner without contradiction. In order to avoid unnecessary repetition, the present disclosure will not further describe various possible combinations.

[0153] In addition, the various embodiments of the present disclosure may be arbitrarily combined, and as long as they do not violate the concept of the present disclosure, they should also be regarded as the contents disclosed by the present disclosure.

Claims

1. A vehicle power supply system (100), characterized in that: The power supply system (100) comprises 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); The first battery pack (130) is used to supply power to the first load (110); The second battery pack (140) is used to supply power to the second load (120); The bidirectional voltage converter (150) is used to control energy transmission between the first battery pack (130) and the second battery pack (140).

2. The power supply system (100) according to claim 1, characterized in that: The bidirectional voltage converter (150) is configured as follows: When the first state of charge of the first battery pack (130) is within a first preset range and the second state of charge of the second battery pack (140) is within a second preset range, the first battery pack (130) and the second battery pack (140) are caused to perform energy transmission in a first energy transmission direction; When the first state of charge of the first battery pack (130) is within a third preset range and the second state of charge of the second battery pack (140) is within a fourth preset range, the first battery pack (130) and the second battery pack (140) are caused to perform energy transmission in a second energy transmission direction.

3. The power supply system (100) according to claim 2, characterized in that: The first energy transmission direction is energy transmission from the first battery pack (130) to the second battery pack (140); and the second energy transmission direction is energy transmission from the second battery pack (140) to the first battery pack (130).

4. The power supply system (100) according to claim 1, characterized in that: When the first state of charge of the first battery pack (130) is within a fifth preset range and the second state of charge of the second battery pack (140) is within a sixth preset range, the first battery pack (130) and / or the second battery pack (140) reduces energy output.

5. The power supply system (100) according to any one of claims 1 to 4, characterized in that: A first preset range of the first state of charge of the first battery pack (130) is greater than a third preset range of the first state of charge of the first battery pack (130), and the third preset range of the first state of charge of the first battery pack (130) is greater than a fifth preset range of the first state of charge of the first battery pack (130); The sixth preset range of the second state of charge of the second battery pack (140) is smaller than the second preset range and the fourth preset range of the second state of charge of the second battery pack (140).

6. The power supply system (100) 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 (100) according to claim 1, characterized in that: The power supply system further comprises a first pre-charging circuit (160); the first pre-charging circuit (160) is respectively connected to the first battery pack (130) and the first load (110); The first pre-charging circuit (160) is used to pre-charge the first load (110); and / or, The power supply system further comprises a second pre-charging circuit (170); the second pre-charging circuit (170) is respectively connected to the second battery pack (140) and the second load (120); The second pre-charging circuit (170) is used to pre-charge the second load (120).

8. The power supply system (100) according to claim 1, characterized in that: The second load (120) is a power system of the vehicle.

9. A method for powering a vehicle, characterized in that: A power supply system applied to the vehicle, the system comprising 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 connected to the first battery pack and the second battery pack respectively; the method includes: According to a first state of charge of the first battery pack and a second state of charge of the second battery pack, energy transfer between the first battery pack and the second battery pack is controlled by the bidirectional voltage converter; wherein the first battery pack is used to power the first load, and the second battery pack is used to power the second load.

10. An electronic device, characterized in that: include: a memory having a computer program stored thereon; 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 to 8.

11. A vehicle control system (800), characterized in that: The electronic device (860) comprises the electronic device (860) as claimed in claim 10, and / or the power supply system (100) for a vehicle as claimed in any one of claims 1 to 8.

12. The control system (800) according to claim 11, characterized in that: The electronic device (860) is electrically connected to the bidirectional voltage converter (850), the first battery pack (830) and the second battery pack (840) respectively.

13. A vehicle, characterized in that: The vehicle comprises the vehicle power supply system (100) according to any one of claims 1 to 8 or the vehicle control system (800) according to any one of claims 11 to 12.

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