Vehicle-mounted power supply control method, power supply management terminal and system

Abstract

The present invention provides a vehicle-mounted power supply control method, a power supply management terminal and a system, the method comprising: obtaining a power supply mode and a vehicle state; the power supply mode comprising: a pure electric mode or a hybrid power supply mode; determining a corresponding power supply strategy based on the power supply mode and the vehicle state; controlling a generator set and a battery pack to output electric energy based on the power supply strategy; wherein the generator set comprises a plurality of generators connected in parallel and redundantly, and the battery pack comprises a plurality of battery packs connected in parallel and redundantly; in this way, since each generator is independent and redundant, and each battery pack is independent and redundant, not only can high-power power demand be provided, but also the reliability and stability of the power supply process can be improved due to the redundant state, and the power output can be automatically adjusted according to the power supply mode and the vehicle state, and the adaptability is strong, which can ensure the power demand of special vehicles, and further ensure the performance of special vehicles.

Description

Technical Field

[0001] The present application relates to the field of vehicle power supply technology, and in particular to a vehicle-mounted power supply control method, a power supply management terminal and a system. Background Art

[0002] Currently, with the development of hybrid special vehicles, special vehicles provide more and more functions, and the demand for electricity is also increasing accordingly.

[0003] Due to the particularity of special vehicles, special vehicles generally need to load large equipment in the vehicle. In addition to supplying power to the vehicle itself, the power supply system also needs to supply power to the large equipment. Therefore, there is an urgent need to provide a highly reliable and adaptable power supply system. Summary of the invention

[0004] In response to the problems existing in the prior art, the embodiments of the present invention provide a method for implementing on-board power supply control, a power management terminal and a system to solve or partially solve the technical problem that the prior art cannot provide a highly reliable and adaptable power supply method for hybrid special vehicles, resulting in the performance of the special vehicles being affected.

[0005] A first aspect of the present invention provides a vehicle-mounted power supply control method, which is applied in a power supply management terminal, and the method comprises:

[0006] Obtaining a power supply mode and a vehicle status; the power supply mode includes: a pure electric mode or a hybrid power supply mode;

[0007] Determine a corresponding power supply strategy based on the power supply mode and the vehicle status;

[0008] Based on the power supply strategy, the generator set and the battery set are controlled to output electric energy; wherein,

[0009] The generator set includes a plurality of generators connected in parallel and redundant to each other, and the battery set includes a plurality of battery packs connected in parallel and redundant to each other.

[0010] In the above scheme, the method further comprises:

[0011] If it is determined that any current generator set or any current battery pack fails, the current generator set or the current battery pack is controlled to terminate power supply.

[0012] In the above solution, the power control of the generator set and the battery set based on the power supply strategy includes:

[0013] When the power supply mode is a hybrid power supply mode and the vehicle state is a power-on state, determining a target battery pack to be started according to a power-on instruction; the target battery pack is a battery pack whose battery pack voltage difference is less than a first voltage threshold;

[0014] Control the corresponding target battery packs to start in order from low to high according to the battery pack voltage difference;

[0015] If it is determined that the power-on is successful, controlling the power supply lines of each generator to be connected;

[0016] The power generation power of the generator set is controlled according to the power supply parameters of the battery set.

[0017] In the above solution, the step of controlling the power generation power of the generator set according to the power supply parameters of the battery set includes:

[0018] Obtaining a total state of charge of the battery pack;

[0019] determining a charging power factor of the battery pack based on the total state of charge;

[0020] The power generation power of the generator set is determined based on the charging power coefficient, the charging power of the battery set, the bus voltage, the operating current of the battery set and the output current of the generator set.

[0021] In the above scheme, the method of determining the power generation power of the generator set based on the charging power coefficient, the charging power of the battery set, the bus voltage, the operating current of the battery set and the output current of the generator set includes:

[0022] According to the formula P = k*p1+v1*(I 电 -I 发 ) determines the power generation power P of the generator; wherein,

[0023] k is the charging power coefficient, p1 is the charging power of the battery pack, v1 is the bus voltage, and I 电 is the operating current of the battery pack, the I 发 is the output current of the generator set.

[0024] In the above solution, the power control of the generator set and the battery set based on the power supply strategy includes:

[0025] When the power supply mode is the hybrid power supply mode, the vehicle state is the slow braking state, and the current vehicle speed is greater than the preset vehicle speed threshold, if it is determined that the reverse braking power is less than the charging power allowed by the battery pack, the reverse braking power consumed by the generator set is controlled to be 0 kW;

[0026] If it is determined that the reverse braking power is greater than the charging power allowed by the battery pack, the reverse braking power consumed by the generator set is determined according to the reverse braking power requested by the vehicle and the charging power allowed by the battery pack; the reverse braking power consumed by the generator set is the power difference between the reverse braking power requested by the vehicle and the charging power allowed by the battery pack.

[0027] In the above scheme, the method further comprises:

[0028] When it is determined that the current state of charge of the battery pack is greater than a preset state of charge threshold, the reverse braking power consumed by the generator set is controlled to be the reverse braking power requested by the vehicle.

[0029] In the above solution, the control of the generator set and the battery set to output electric energy based on the power supply strategy includes:

[0030] When the power supply mode is the pure electric mode and the vehicle state is the power-on state, determining the target battery pack to be started according to the power-on instruction; the target battery pack is a battery pack whose battery pack voltage difference is less than a preset voltage threshold;

[0031] If it is determined that the battery pack is not connected to an external charging device, the corresponding target battery packs are controlled to start in order from high to low according to the battery pack voltage difference, so that the target battery pack outputs electric energy;

[0032] If it is determined that the battery pack is connected to an external charging device, the corresponding target battery packs are controlled to start in sequence according to the battery pack voltage difference from low to high, so that the target battery packs output electric energy.

[0033] A second aspect of the present invention provides a power management terminal, the power management terminal comprising:

[0034] An acquisition unit, used to acquire a power supply mode and a vehicle status; the power supply mode includes: a pure electric mode or a hybrid power supply mode;

[0035] A determination unit, configured to determine a corresponding power supply strategy based on the power supply mode and the vehicle state;

[0036] A control unit is used to control the generator set and the battery set to output electric energy based on the power supply strategy; wherein,

[0037] The generator set includes a plurality of generators connected in parallel and redundant to each other, and the battery set includes a plurality of battery packs connected in parallel and redundant to each other.

[0038] The third aspect of the present invention provides a vehicle-mounted power supply control system, the system comprising: a generator set, a battery pack, a power management terminal and a power collector; wherein:

[0039] The power management terminal is used to determine a corresponding power supply strategy based on the power supply mode and the vehicle state, and control the generator set and the battery set to output electric energy based on the power supply strategy;

[0040] The power collector is used to collect the electric energy output by the generator set and the electric energy output by the battery set, and distribute the collected electric energy to the vehicle load and vehicle-mounted equipment.

[0041] The present invention provides a vehicle-mounted power supply control method, a power supply management terminal and a system, the method comprising: obtaining a power supply mode and a vehicle state; the power supply mode comprising: a pure electric mode or a hybrid power supply mode; determining a corresponding power supply strategy based on the power supply mode and the vehicle state; controlling a generator set and a battery pack to output electric energy based on the power supply strategy; wherein the generator set comprises a plurality of generators connected in parallel and redundantly, and the battery pack comprises a plurality of battery packs connected in parallel and redundantly; in this way, since each generator is independent and redundant, and each battery pack is independent and redundant, not only can high-power power demand be provided, but also the reliability and stability of the power supply process can be improved due to the redundant state, and the power output can be automatically adjusted according to the power supply mode and the vehicle state, and the adaptability is strong, which can ensure the power demand of special vehicles, and further ensure the performance of special vehicles. BRIEF DESCRIPTION OF THE DRAWINGS

[0042] By reading the detailed description of the preferred embodiment below, various other advantages and benefits will become clear to those of ordinary skill in the art. The accompanying drawings are only used for the purpose of illustrating the preferred embodiment and are not considered to be limitations of the present invention. In addition, the same reference symbols are used to represent the same components throughout the accompanying drawings.

[0043] In the attached picture:

[0044] Figure 1 It shows a schematic diagram of the overall structure of a vehicle power supply control system according to an embodiment of the present invention;

[0045] Figure 2 A circuit diagram of a power concentrator according to an embodiment of the present invention is shown;

[0046] Figure 3 A schematic diagram of a vehicle power supply control method according to an embodiment of the present invention is shown;

[0047] Figure 4 A schematic diagram of the structure of a vehicle power supply terminal according to an embodiment of the present invention is shown. DETAILED DESCRIPTION

[0048] The exemplary embodiments of the present disclosure will be described in more detail below with reference to the accompanying drawings. Although the exemplary embodiments of the present disclosure are shown in the accompanying drawings, it should be understood that the present disclosure can be implemented in various forms and should not be limited by the embodiments set forth herein. On the contrary, these embodiments are provided to enable a more thorough understanding of the present disclosure and to fully convey the scope of the present disclosure to those skilled in the art.

[0049] In order to better understand the technical solution of this embodiment, the vehicle power control system is first introduced here. Figure 1 As shown, the system includes: a generator set, a battery pack, a power management terminal 1 and a power collector 2; wherein the generator set includes a plurality of generators (generator 11 to generator 1n), and the battery pack includes a plurality of battery packs (battery pack 21 to battery pack 2n);

[0050] The power management terminal 1 is used to determine the corresponding power supply strategy based on the power supply mode and the vehicle status, and control the generator set and the battery set to output power based on the power supply strategy;

[0051] The power collector 2 is used to collect the electric energy output by the generator set and the electric energy output by the battery pack, and distribute the collected electric energy to the vehicle load and the vehicle mounted equipment; the mounted equipment may include some heavy special equipment.

[0052] Specifically, the generator set is used to convert fuel into electrical energy, and is connected to the power collector 2 through a high-voltage wire harness, and multiple generators are connected in parallel and redundant to each other. The generator can be a diesel generator or other generators, without limitation.

[0053] When the generator set is outputting power, the generator is in the power generation state, and the fuel energy is converted into electrical energy through the engine; when the vehicle is in the slow braking state (down a long slope) and the current vehicle speed is greater than the preset speed threshold (such as 15km / h), the generator set turns on the reverse braking function, and it needs to consume the excess reverse braking power (remaining after the battery pack is fully charged). At this time, the engine is in the braking state and the generator is in the electric state, so that the electrical energy can be converted into heat energy, which is then discharged through the heat dissipation system to achieve the purpose of consuming electrical energy.

[0054] When the vehicle is in the service braking state, the power generated by the service braking can directly charge the battery pack, and the anti-drag braking power that the generator needs to consume is 0.

[0055] The multiple battery packs in the battery pack are connected in parallel and redundant. The battery pack can discharge to provide power for the vehicle; the battery pack can also absorb power and store it. The battery pack can also provide starting power for the generator set, that is, when receiving the vehicle power-on command, it is necessary to control the battery pack to start first and the generator set to start later.

[0056] The power collector 2 is used to collect the electric energy output by the generator set and the electric energy output by the battery set, and distribute the collected electric energy to the upper equipment power supply interface 3 and the vehicle load power supply interface 4 to provide electric energy for the vehicle load and the upper equipment of the vehicle.

[0057] The power collector 2 is also provided with a mains charging interface 5, through which the battery pack can be charged.

[0058] The circuit diagram of the power collector 2 is as follows: Figure 2 As shown, the power collector 2 includes: a relay, a fuse and a power resistor; wherein,

[0059] G1-1~G1-3, G2-1~G2-3, Gn-1~Gn-3, B1-1~B1-3, B2-1~B2-3, Bn-1~Bn-3, P1-1~P1-3, L1-1~L1-3 are relays; F_g1~F_gn, F_b1~F_bn, F_p1, F_l1 are fuses; R_g1~R_gn, R_b1~R_bn, R_p1, R_l1 are power resistors.

[0060] When each interface device (each generator and each battery pack) is allowed to work, it should be pre-charged first and then the main relay is closed; when the interface device is not allowed to work due to a fault, the positive and negative relays of the interface are disconnected.

[0061] The power management terminal 1 is connected to the generator set, battery pack, and power collector through the first CAN bus, and receives external commands through the second CAN bus. To improve the reliability of data transmission, the first CAN bus and the second CAN bus are both redundant buses, such as Figure 1 As shown, the first CAN bus includes: CAN0_1 and CAN0_2; the second CAN bus includes CAN1_1 and CAN1_2.

[0062] The power management terminal 1 can determine the corresponding power supply strategy based on the power supply mode and vehicle status, and control the generator set and battery pack to output power based on the power supply strategy; the power management terminal 1 also controls the current generator set or the current battery pack to terminate power supply if it is determined that any current generator set or any current battery pack has failed.

[0063] The specific implementation of the power management terminal 1 can refer to the subsequent description of the embodiment of the power management terminal side, which will not be repeated here.

[0064] Based on the same inventive concept as the above-mentioned embodiment, this embodiment provides a vehicle power control method, which is applied in a power management terminal, such as Figure 3 As shown, the method comprises the following steps:

[0065] S310, obtaining a power supply mode and a vehicle state; the power supply mode includes: a pure electric mode or a hybrid power supply mode;

[0066] The vehicle power system in this embodiment includes two power supply modes: hybrid power supply mode and pure electric mode. The user can select the corresponding power supply mode on the control panel based on his or her needs, and the power management terminal can collect the power supply mode identifier selected by the user to determine the corresponding power supply mode.

[0067] In hybrid power supply mode, the generator and battery pack are allowed to work simultaneously. In pure electric mode, only the battery pack is allowed to work, and the generator set is prohibited from working.

[0068] S311, determining a corresponding power supply strategy based on the power supply mode and the vehicle state;

[0069] The power supply mode and vehicle status are different, and the corresponding power supply strategy is also different. Therefore, after obtaining the power supply mode and vehicle status, this embodiment also needs to determine the corresponding power supply strategy based on the power supply mode and vehicle status. Among them, the vehicle status may include: power-on status, driving status, braking status, etc.

[0070] S312, controlling the generator set and the battery set to output electric energy based on the power supply strategy;

[0071] In one embodiment, the power control of the generator set and the battery set based on the power supply strategy includes:

[0072] When the power supply mode is the hybrid power supply mode and the vehicle state is the power-on state, determining a target battery pack to be started according to the power-on instruction; the target battery pack is a battery pack whose battery pack voltage difference is less than a first voltage threshold;

[0073] Control the corresponding target battery packs to start in order from low to high according to the battery pack voltage difference;

[0074] If it is determined that the power-on is successful, the power supply lines of each generator are controlled to be connected;

[0075] The power generation power of the generator set is controlled according to the power supply parameters of the battery set.

[0076] Specifically, as described above, the battery pack can be used as a starting power source for the generator set. Therefore, when the vehicle is powered on, the battery pack can be controlled to start first, and then the generator set can be controlled to start.

[0077] When controlling the battery pack to start, in order to ensure safety, the voltage difference of the battery pack needs to be less than or equal to the preset voltage threshold before the battery pack can be started and connected to the grid. Therefore, it is necessary to detect the voltage difference of the battery packs and then connect them to the grid one by one.

[0078] After the vehicle is powered on successfully, it is necessary to control the generator to be connected to the grid, that is, it is necessary to control the power supply line of the generator to be connected, and the power management terminal transmits the allowed power through the first bus, and coordinates the generator set to follow the energy based on the power supply parameters of the battery pack. The power supply parameters of the battery pack include: the state of charge, temperature, voltage, etc. of the battery pack.

[0079] Then in one embodiment, controlling the power generation power of the generator set according to the power supply parameters of the battery set includes:

[0080] Get the total state of charge of the battery pack;

[0081] determining a charging power factor for the battery pack based on the total state of charge;

[0082] The power generation power of the generator set is determined based on the charging power coefficient, the charging power of the battery set, the bus voltage, the battery set operating current and the generator set output current.

[0083] Determine the charging power factor of the battery pack based on the total state of charge, including:

[0084] If it is determined that the total state of charge is lower than the lower limit of the state of charge, the charging power coefficient is controlled to be 1;

[0085] If it is determined that the total state of charge is lower than the upper limit of the state of charge, the charging power coefficient is controlled to be 0;

[0086] If it is determined that the total state of charge is between the lower limit value of the state of charge and the upper limit value of the state of charge, the maximum single cell voltage and the maximum single cell temperature of the battery pack are obtained; the lower limit value of the state of charge may be 10%, and the upper limit value of the state of charge may be 90%;

[0087] If it is determined that the highest cell voltage of the battery pack is less than or equal to the preset voltage threshold and the highest cell temperature is within the preset temperature range, the corresponding charging power coefficient is obtained by looking up the table in the mapping ratio according to the highest cell temperature and the highest cell voltage; wherein the mapping table stores the corresponding relationship between the battery temperature, the battery voltage and the charging power coefficient;

[0088] The voltage threshold may be determined based on the battery type, for example, when the battery is a lithium iron phosphate battery, the voltage threshold may be 3.65 V. The preset temperature range is generally 0 to 45°C.

[0089] In one embodiment, determining the power generation power of the generator set based on the charging power coefficient, the charging power of the battery set, the bus voltage, the operating current of the battery set, and the output current of the generator set includes:

[0090] According to the formula P = k*p1+v1*(I 电 -I 发 ) determines the power generation power P of the generator; wherein,

[0091] k is the charging power coefficient, p1 is the charging power of the battery pack, v1 is the bus voltage, I 电 is the operating current of the battery pack, I 发 is the output current of the generator set.

[0092] As mentioned above, when the vehicle is in the braking state, the generator set needs to perform the reverse braking function and consume the reverse braking power. The braking state includes slow braking when going down a long slope and driving braking during normal driving.

[0093] Then in one implementation, the power control of the generator set and the battery set based on the power supply strategy includes:

[0094] When the power supply mode is the hybrid power supply mode, the vehicle state is the slow braking state and the current vehicle speed is greater than the preset vehicle speed threshold (such as 15km / h), if it is determined that the reverse braking power is less than the charging power allowed by the battery pack, the reverse braking power consumed by the generator set is controlled to be 0kW, so that all the reverse braking power can be used to charge the battery pack;

[0095] If it is determined that the reverse braking power is greater than the charging power allowed by the battery pack, the reverse braking power consumed by the generator set is determined according to the reverse braking power requested by the vehicle and the charging power allowed by the battery pack; the reverse braking power consumed by the generator set is the power difference between the reverse braking power requested by the vehicle and the charging power allowed by the battery pack.

[0096] In one embodiment, the power control of the generator set and the battery set based on the power supply strategy includes:

[0097] When the power supply mode is the hybrid power supply mode and the vehicle is in the service braking state, the power generated by the service braking can directly charge the battery pack, and the reverse braking power that the generator needs to consume is 0.

[0098] In addition, when it is determined that the current state of charge of the battery pack is greater than a preset state of charge threshold, the reverse braking power consumed by the generator set is controlled to be the reverse braking power requested by the vehicle.

[0099] In another embodiment, controlling the generator set and the battery set to output electric energy based on the power supply strategy includes:

[0100] When the power supply mode is the pure electric mode and the vehicle state is the power-on state, the target battery pack to be started is determined according to the power-on instruction; the target battery pack is a battery pack whose battery pack voltage difference is less than a preset voltage threshold;

[0101] If it is determined that the battery pack is not connected to an external charging device, the corresponding target battery packs are controlled to start in order from high to low according to the battery pack voltage difference, so that the target battery packs output power;

[0102] If it is determined that the battery pack is connected to an external charging device, the corresponding target battery packs are controlled to start in sequence according to the battery pack voltage difference from low to high, so that the target battery packs output electric energy.

[0103] When a load power supply instruction is received through the second CAN bus, the load power supply line is closed; the power management terminal 1 transmits the allowable power of the current system through the first CAN bus. When an external charging device is connected, the external power is controlled to be lower than the allowable power to prevent accidental driving of the vehicle and ensure vehicle safety and performance.

[0104] In this embodiment, since the generators are independent and redundant, and the battery packs are independent and redundant, not only can they provide high-power electricity needs, but the redundant state can also improve the reliability and stability of the power supply process, and can automatically adjust the power output according to the power supply mode and vehicle status. It has strong adaptability and can ensure the power needs of special vehicles, thereby ensuring the performance of special vehicles.

[0105] Based on the same inventive concept as the above-mentioned embodiment, this embodiment also provides a power management terminal, such as Figure 4 As shown, including:

[0106] The acquisition unit 41 is used to acquire the power supply mode and the vehicle status; the power supply mode includes: a pure electric mode or a hybrid power supply mode;

[0107] A determination unit 42, configured to determine a corresponding power supply strategy based on the power supply mode and the vehicle state;

[0108] The control unit 43 is used to control the generator set and the battery set to output electric energy based on the power supply strategy; wherein,

[0109] The generator set includes a plurality of generators connected in parallel and redundant to each other, and the battery set includes a plurality of battery packs connected in parallel and redundant to each other.

[0110] Since the power management terminal introduced in the embodiment of the present invention is a terminal used to implement the vehicle power control method of the embodiment of the present invention, based on the method introduced in the embodiment of the present invention, those skilled in the art can understand the specific structure and deformation of the device, so it is not repeated here. All terminals used in the method of the embodiment of the present invention belong to the scope of protection of the present invention.

[0111] Through one or more embodiments of the present invention, the present invention has the following beneficial effects or advantages:

[0112] The present invention provides a vehicle-mounted power supply control method, a power supply management terminal and a system, the method comprising: obtaining a power supply mode and a vehicle state; the power supply mode comprising: a pure electric mode or a hybrid power supply mode; determining a corresponding power supply strategy based on the power supply mode and the vehicle state; controlling a generator set and a battery pack to output electric energy based on the power supply strategy; wherein the generator set comprises a plurality of generators connected in parallel and redundantly, and the battery pack comprises a plurality of battery packs connected in parallel and redundantly; in this way, since each generator is independent and redundant, and each battery pack is independent and redundant, not only can high-power power demand be provided, but also the reliability and stability of the power supply process can be improved due to the redundant state, and the power output can be automatically adjusted according to the power supply mode and the vehicle state, and the adaptability is strong, which can ensure the power demand of special vehicles, and further ensure the performance of special vehicles.

[0113] The algorithm and display provided herein are not inherently related to any particular computer, virtual system or other device. Various general purpose systems can also be used together with the teachings based on this. According to the above description, it is obvious that the structure required for constructing such systems. In addition, the present invention is not directed to any specific programming language either. It should be understood that various programming languages ​​can be utilized to realize the content of the present invention described herein, and the description of the above specific languages ​​is for disclosing the best mode of the present invention.

[0114] In the description provided herein, a large number of specific details are described. However, it is understood that embodiments of the present invention can be practiced without these specific details. In some instances, well-known methods, structures and techniques are not shown in detail so as not to obscure the understanding of this description.

[0115] Similarly, it should be understood that in order to streamline the present disclosure and aid in understanding one or more of the various inventive aspects, in the above description of exemplary embodiments of the present invention, the various features of the present invention are sometimes grouped together into a single embodiment, figure, or description thereof. However, this disclosed method should not be interpreted as reflecting the following intention: that the claimed invention requires more features than those explicitly recited in each claim. More specifically, as reflected in the claims below, inventive aspects lie in less than all the features of the individual embodiments disclosed above. Therefore, the claims that follow the specific embodiment are hereby expressly incorporated into the specific embodiment, with each claim itself serving as a separate embodiment of the present invention.

[0116] Those skilled in the art will appreciate that the modules in the devices in the embodiments may be adaptively changed and arranged in one or more devices different from the embodiments. The modules or units or components in the embodiments may be combined into one module or unit or component, and in addition they may be divided into a plurality of submodules or subunits or subcomponents. Except that at least some of such features and / or processes or units are mutually exclusive, all features disclosed in this specification (including the accompanying claims, abstracts and drawings) and all processes or units of any method or device disclosed in this manner may be combined in any combination. Unless otherwise expressly stated, each feature disclosed in this specification (including the accompanying claims, abstracts and drawings) may be replaced by an alternative feature providing the same, equivalent or similar purpose.

[0117] In addition, those skilled in the art will appreciate that, although some embodiments herein include certain features included in other embodiments but not other features, the combination of features of different embodiments is meant to be within the scope of the present invention and form different embodiments. For example, in the claims below, any one of the claimed embodiments may be used in any combination.

[0118] The various component embodiments of the present invention can be implemented in hardware, or in software modules running on one or more processors, or in a combination thereof. It should be understood by those skilled in the art that a microprocessor or digital signal processor (DSP) can be used in practice to implement some or all functions of some or all components in a gateway, proxy server, or system according to an embodiment of the present invention. The present invention can also be implemented as a device or apparatus program (e.g., a computer program and a computer program product) for executing part or all of the methods described herein. Such a program implementing the present invention can be stored on a computer-readable medium, or can have the form of one or more signals. Such a signal can be downloaded from an Internet website, or provided on a carrier signal, or provided in any other form.

[0119] It should be noted that the above embodiments illustrate the present invention rather than limit it, and that those skilled in the art may devise alternative embodiments without departing from the scope of the appended claims. In the claims, any reference symbol between brackets shall not be construed as a limitation on the claims. The word "comprising" does not exclude the presence of elements or steps not listed in the claims. The word "one" or "an" preceding an element does not exclude the presence of a plurality of such elements. The present invention may be implemented by means of hardware comprising a number of different elements and by means of a suitably programmed computer. In a unit claim enumerating a number of devices, several of these devices may be embodied by the same hardware item. The use of the words first, second, and third, etc., does not indicate any order. These words may be interpreted as names.

[0120] Although the preferred embodiments of the present application have been described, those skilled in the art may make other changes and modifications to these embodiments once they have learned the basic creative concept. Therefore, the appended claims are intended to be interpreted as including the preferred embodiments and all changes and modifications falling within the scope of the present application.

[0121] The above description is only a preferred embodiment of the present invention and is not intended to limit the protection scope of the present invention. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A vehicle power supply control method, characterized in that: Applied in a power management terminal, the method comprises: Obtaining a power supply mode and a vehicle status; the power supply mode includes: a pure electric mode or a hybrid power supply mode; Determine a corresponding power supply strategy based on the power supply mode and the vehicle status; Based on the power supply strategy, the generator set and the battery set are controlled to output electric energy; wherein, The generator set includes a plurality of generators connected in parallel and redundant to each other, and the battery set includes a plurality of battery packs connected in parallel and redundant to each other; wherein, The power control of the generator set and the battery set based on the power supply strategy includes: When the power supply mode is a hybrid power supply mode and the vehicle state is a power-on state, determining a target battery pack to be started according to a power-on instruction; the target battery pack is a battery pack whose battery pack voltage difference is less than a first voltage threshold; Control the corresponding target battery packs to start in order from low to high according to the battery pack voltage difference; If it is determined that the power-on is successful, controlling the power supply lines of each generator to be connected; The power generation power of the generator set is controlled according to the power supply parameters of the battery set.

2. The method according to claim 1, characterized in that The method further comprises: If it is determined that any current generator set or any current battery pack fails, the current generator set or the current battery pack is controlled to terminate power supply.

3. The method according to claim 1, characterized in that The controlling the power generation power of the generator set according to the power supply parameters of the battery set comprises: Obtaining a total state of charge of the battery pack; determining a charging power factor of the battery pack based on the total state of charge; The power generation power of the generator set is determined based on the charging power coefficient, the charging power of the battery set, the bus voltage, the operating current of the battery set and the output current of the generator set.

4. The method according to claim 3, characterized in that The determining the power generation power of the generator set based on the charging power coefficient, the charging power of the battery set, the bus voltage, the working current of the battery set and the output current of the generator set includes: According to the formula P = k*p1+v1*(I 电 -I 发 ) determines the power generation power P of the generator; wherein, k is the charging power coefficient, p1 is the charging power of the battery pack, v1 is the bus voltage, and I 电 is the operating current of the battery pack, the I 发 is the output current of the generator set.

5. The method according to claim 1, characterized in that The power control of the generator set and the battery set based on the power supply strategy includes: When the power supply mode is the hybrid power supply mode, the vehicle state is the slow braking state and the current vehicle speed is greater than the preset vehicle speed threshold, if it is determined that the reverse braking power is less than the charging power allowed by the battery pack, the reverse braking power consumed by the generator set is controlled to be 0 kW; If it is determined that the reverse braking power is greater than the charging power allowed by the battery pack, the reverse braking power consumed by the generator set is determined according to the reverse braking power requested by the vehicle and the charging power allowed by the battery pack; the reverse braking power consumed by the generator set is the power difference between the reverse braking power requested by the vehicle and the charging power allowed by the battery pack.

6. The method according to claim 1, characterized in that The method further comprises: When it is determined that the current state of charge of the battery pack is greater than a preset state of charge threshold, the reverse braking power consumed by the generator set is controlled to be the reverse braking power requested by the vehicle.

7. The method according to claim 1, characterized in that The controlling the generator set and the battery set to output electric energy based on the power supply strategy includes: When the power supply mode is the pure electric mode and the vehicle state is the power-on state, determining the target battery pack to be started according to the power-on instruction; the target battery pack is a battery pack whose battery pack voltage difference is less than a preset voltage threshold; If it is determined that the battery pack is not connected to an external charging device, the corresponding target battery packs are controlled to start in order from high to low according to the battery pack voltage difference, so that the target battery pack outputs electric energy; If it is determined that the battery pack is connected to an external charging device, the corresponding target battery packs are controlled to start in sequence according to the battery pack voltage difference from low to high, so that the target battery packs output electric energy.

8. A power management terminal, characterized in that: The power management terminal comprises: An acquisition unit, used to acquire a power supply mode and a vehicle status; the power supply mode includes: a pure electric mode or a hybrid power supply mode; A determination unit, configured to determine a corresponding power supply strategy based on the power supply mode and the vehicle state; A control unit is used to control the generator set and the battery set to output electric energy based on the power supply strategy; wherein, The generator set includes a plurality of generators connected in parallel and redundant to each other, and the battery set includes a plurality of battery packs connected in parallel and redundant to each other; wherein, The power control of the generator set and the battery set based on the power supply strategy includes: When the power supply mode is a hybrid power supply mode and the vehicle state is a power-on state, determining a target battery pack to be started according to a power-on instruction; the target battery pack is a battery pack whose battery pack voltage difference is less than a first voltage threshold; Control the corresponding target battery packs to start in order from low to high according to the battery pack voltage difference; If it is determined that the power-on is successful, controlling the power supply lines of each generator to be connected; The power generation power of the generator set is controlled according to the power supply parameters of the battery set.

9. A vehicle-mounted power supply control system, characterized in that: The system includes: a generator set, a battery set, a power management terminal and a power collector; wherein, The power management terminal is used to determine a corresponding power supply strategy based on the power supply mode and the vehicle state, and control the generator set and the battery set to output electric energy based on the power supply strategy; The power concentrator is used to concentrating the electric energy output by the generator set and the electric energy output by the battery pack, and distributing the concentrating electric energy to the vehicle load and vehicle-mounted equipment; wherein the electric energy control of the generator set and the battery pack based on the power supply strategy includes: When the power supply mode is a hybrid power supply mode and the vehicle state is a power-on state, determining a target battery pack to be started according to a power-on instruction; the target battery pack is a battery pack whose battery pack voltage difference is less than a first voltage threshold; Control the corresponding target battery packs to start in order from low to high according to the battery pack voltage difference; If it is determined that the power-on is successful, controlling the power supply lines of each generator to be connected; The power generation power of the generator set is controlled according to the power supply parameters of the battery set.

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