A battery balance control method, device, equipment and storage medium for extended-range vehicle

Abstract

The present application provides a method, device, equipment and storage medium for controlling battery balance of a range-extended vehicle, comprising: receiving a vehicle power demand of the range-extended vehicle, and obtaining a target speed according to the power demand; calculating a target torque according to the power demand and the target speed; driving the range-extender assembly to generate electricity with the target speed and the target torque, and collecting the output power of the range-extender assembly; determining that a battery balance state is reached when an absolute value of a first power difference between the output power of the range-extender assembly and the power demand is less than a first preset threshold; the present application adjusts the overall power of the range extender to achieve a balance between the power demand of the range extender and the actual output power of the range extender as a control target, thereby enabling more accurate control of the battery balance of the range-extended vehicle.

Description

Technical Field

[0001] The present application relates to the field of automotive technology, and in particular to a method, device, equipment, and storage medium for controlling battery balance in a range-extended vehicle. Background Art

[0002] At present, new energy vehicles are at risk of battery power imbalance; the existing technology mainly adjusts the engine control parameters according to the difference between the actual engine torque and the target torque until the actual torque is equal to the target torque, and then adjusts the motor control torque based on this torque until the motor speed is equal to the target speed, so as to achieve the target power; but the actual engine torque is a model calculation value, and the overall accuracy is slightly lower than the motor torque. Adjusting the motor control parameters based on the engine torque may cause inaccurate power output by the system. Summary of the Invention

[0003] The purpose of this application is to address the above problems and provide a method, device, equipment and storage medium for controlling battery balance of extended-range vehicles.

[0004] First aspect:

[0005] The present application provides a battery balance control method for a range-extended vehicle, comprising: receiving a vehicle power requirement of the range-extended vehicle, and obtaining a target speed according to the power requirement;

[0006] Calculating a target torque according to the required power and the target speed;

[0007] driving the range extender assembly to generate electricity at the target speed and the target torque, and collecting the output power of the range extender assembly;

[0008] When it is determined that the absolute value of a first power difference between the output power of the range extender assembly and the required power is less than a first preset threshold, the battery reaches an electrical balance state.

[0009] According to the technical solutions provided in certain embodiments of the present application, the step of obtaining the target speed according to the required power includes:

[0010] Calling a calibration database of the range-extended vehicle, the calibration database including at least: a plurality of sets of required power and target speeds corresponding to the required power;

[0011] The calibration database is traversed to determine the target speed corresponding to the required power.

[0012] According to the technical solutions provided in certain embodiments of the present application, the range-extended vehicle battery balance control method further includes the following steps:

[0013] When it is determined that the absolute value of the first power difference between the output power of the range extender assembly and the required power is greater than or equal to a first preset threshold,

[0014] calculating a first torque difference corresponding to the first power difference;

[0015] obtaining a first preset torque of the range extender assembly;

[0016] calculating a second torque difference between the first preset torque and the first torque difference;

[0017] calculating a first adjusted power of the range extender assembly according to the second torque difference;

[0018] When it is determined that the absolute value of an i-th power difference (i≥2) between the first adjusted power and the required power of the range extender assembly is less than the first preset threshold, the battery electrical balance state is reached.

[0019] According to the technical solutions provided in certain embodiments of the present application, the range-extended vehicle battery balance control method further includes the following steps:

[0020] When the absolute value of the i-th power difference between the first adjusted power of the range extender assembly and the required power is greater than or equal to the first preset threshold,

[0021] Calculate the (i+1)th torque difference corresponding to the (i)th power difference;

[0022] calculating an (i+1)th torque difference between the first preset torque and the (i)th torque difference;

[0023] Calculating an i-th adjusted power of the range extender assembly according to the i+1-th torque difference;

[0024] It is determined that a battery electrical balance state is reached when an absolute value of an (i+1)th power difference between an (i)th adjusted power of the range extender assembly and the required power is less than a first preset threshold.

[0025] According to the technical solutions provided in certain embodiments of the present application, the range-extended vehicle battery balance control method further includes the following steps:

[0026] When it is determined that the absolute value of the i+1th power difference between the first adjusted power and the required power of the range extender assembly is greater than or equal to a first preset threshold, the i+2th torque difference corresponding to the i+1th power difference is repeatedly calculated.

[0027] According to the technical solutions provided in certain embodiments of the present application, the range-extended vehicle battery balance control method further includes the following steps:

[0028] When it is determined that the difference between the (i+1)th torque difference value and the first preset torque is less than or equal to the second preset threshold range, the (i+2)th torque difference value corresponding to the (i+1)th power difference value is repeatedly calculated.

[0029] According to the technical solutions provided in certain embodiments of the present application, the range-extended vehicle battery balance control method further includes the following steps:

[0030] When it is determined that the difference between the (i+1)th torque difference and the first preset torque is greater than a second preset threshold range, the step of calculating the (i)th adjusted power of the range extender assembly according to the (i+1)th torque difference is stopped.

[0031] Second aspect:

[0032] The present application also provides a battery balance control device for a range-extended vehicle, comprising:

[0033] A collection module is configured to: receive the required power of the extended-range vehicle, and obtain a target speed according to the required power;

[0034] a calculation module configured to calculate a target torque according to the required power and the target speed;

[0035] A processing module is configured to: drive the range extender assembly to generate electricity at the target speed and the target torque, and collect the output power of the range extender assembly; the processing module is further configured to: determine that a battery electrical balance state is reached when an absolute value of a first power difference between the output power of the range extender assembly and the required power is less than a first preset threshold.

[0036] The third aspect:

[0037] The present application also provides a terminal device, wherein the battery balance control device for a range-extended vehicle includes a memory, a processor, and a computer program stored in the memory and running on the processor;

[0038] When the computer program is executed by the processor, the steps of the range-extended vehicle battery balance control method described above are implemented.

[0039] Fourth aspect:

[0040] The present application also provides a computer-readable storage medium, on which a range-extended vehicle battery balance control program is stored. When the range-extended vehicle battery balance control program is executed by a processor, the steps of any one of the range-extended vehicle battery balance control methods described above are implemented.

[0041] Compared with the existing technology, the beneficial effects of the present application are as follows: during use, the required power of the whole vehicle and the calibration database must first be obtained, and the target torque must be calculated based on the required power and target speed in the calibration database. The target speed and target torque are then input into the range extender for power generation, and the output power of the range extender is collected. It is determined that when the absolute value of the first power difference between the output power and the required power is less than a preset threshold, the battery reaches an electrically balanced state; the present application adjusts the overall power of the range extender to achieve a balance between the power demand of the range extender and the actual output power of the range extender as a control target, and can more accurately control the power balance of the battery of the range extender vehicle. BRIEF DESCRIPTION OF THE DRAWINGS

[0042] Figure 1 A flow chart of a battery balance control method for a range-extended vehicle provided in Example 1 of the present application;

[0043] Figure 2 A schematic diagram of a battery balancing system for a range-extended vehicle provided in Example 2 of the present application;

[0044] Figure 3 A schematic diagram of the structure of the server provided in Example 5 of the present application. DETAILED DESCRIPTION

[0045] In order to enable those skilled in the art to better understand the technical solution of the present application, the present application is described in detail below with reference to the accompanying drawings. The description in this section is only exemplary and explanatory and should not have any limiting effect on the scope of protection of the present application.

[0046] It should be noted that similar reference numerals and letters denote similar items in the following drawings, and therefore, once an item is defined in one drawing, it does not need to be further defined or explained in subsequent drawings.

[0047] In the description of the present disclosure, it should be noted that the terms "center," "upper," "lower," "left," "right," "horizontal," "inner," "outer," "front end," "rear end," "side," etc., indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings, or are the orientations or positional relationships in which the disclosed product is typically placed when in use. These terms are intended only to facilitate the description of the present disclosure and to simplify the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, be constructed, or operate in a specific orientation. Therefore, they should not be construed as limitations on the present disclosure. Furthermore, the terms "first," "second," "third," etc., are used only to distinguish descriptions and should not be construed as indicating or implying relative importance.

[0048] Furthermore, terms such as "horizontal," "vertical," and "overhanging" do not necessarily imply that a component must be absolutely horizontal or overhanging, but rather that it can be slightly tilted. For example, "horizontal" simply means that its direction is more horizontal than "vertical," and does not mean that the structure must be completely horizontal, but rather that it can be slightly tilted.

[0049] It should also be noted that, in the description of this disclosure, unless otherwise expressly specified or limited, the terms "disposed," "installed," "connected," "connected," and "docking" should be understood broadly. For example, they may refer to fixed connections, detachable connections, or integral connections; they may refer to mechanical connections or electrical connections; they may refer to direct connections or indirect connections through an intermediate medium; and they may refer to internal connections between two components. Those skilled in the art will understand the specific meanings of the above terms in this disclosure based on the specific circumstances.

[0050] Example 1

[0051] Please refer to Figure 1 This embodiment provides a battery balance control method for a range-extended vehicle, including:

[0052] S1. Receive the required power of the extended-range vehicle and obtain a target speed according to the required power;

[0053] S2. Calculating a target torque based on the required power and the target speed;

[0054] S3. driving the range extender assembly to generate electricity at the target speed and the target torque, and collecting the output power of the range extender assembly;

[0055] S4. When it is determined that the absolute value of a first power difference between the output power of the range extender assembly and the required power is less than a preset threshold, a battery electrical balance state is reached.

[0056] Specifically, in this embodiment, the whole vehicle power requirement of the range-extended vehicle is first received. When the range-extended vehicle is driving on the road, it first consumes battery power to drive the vehicle. When the battery power is insufficient to drive the vehicle to continue driving, the range extender will generate electricity. At this time, the range extender will generate electricity in proportion to the amount of electricity required for driving the vehicle. The whole vehicle power requirement is the power consumed by the range extender when generating electricity.

[0057] After obtaining the required power, the target speed needs to be calculated according to the required power. After calculating the target speed, the calibration database of the extended-range vehicle needs to be called. The calibration database is shown in Table 1:

[0058] Table 1: Calibration database

[0059] <![CDATA[Required power P zx > <![CDATA[Target rotational speed n zx > <![CDATA[First required power P z1 > <![CDATA[First target rotational speed n z1 > <![CDATA[Second required power P z2 > <![CDATA[Second target rotational speed n z2 > <![CDATA[Third required power P z3 > <![CDATA[Third target rotational speed n z3 > <![CDATA[Fourth required power P z4 > <![CDATA[Fourth target speed n z4 >

[0060] Then, the calibration database table 1 is traversed, and the target speed corresponding to the required power is found in the calibration database table 1. Assuming that the required power of the vehicle is the first required power P z1 , then find the first required power P in the calibration database table 1 z1 The corresponding first target speed n z1 , then according to the first required power P z1 and the first target speed n z1 , calculate the first target torque T z1 , calculate the first target torque T z1 The formula is as follows:

[0061]

[0062] Where: T z1 Represents the first target torque, in Newton-meters (Nm);

[0063] n z1 Represents the first target speed of the motor, in revolutions per minute (r / min);

[0064] P z1 Represents the first required power;

[0065] 9550 is a constant.

[0066] And at the first target speed n z1 With the first target torque T z1 The range extender assembly is driven to generate electricity, and the output power of the range extender assembly is collected, which is recorded as P1. The calculation formula of the output power P1 is as follows:

[0067] P1=IU

[0068] Where: I represents the output current of the range extender assembly;

[0069] U represents the output voltage of the range extender assembly.

[0070] At this time, it is necessary to determine whether the output power P1 is equal to the first required power P z1 Is the absolute value of the difference between the output power P1 and the first required power P z1 The absolute value of the difference between them is recorded as the first power difference |P M1 |, that is, |P1-P z1 |=|P M1 |, the first preset threshold is set to P Q , and then the first power difference |P M1|With the first preset threshold P Q When the first power difference |P M1 | is less than the first preset threshold P Q When |P M1 | <P Q When , it can be concluded that the range-extended vehicle battery has reached a state of electrical balance.

[0071] When it is determined that the output power P1 of the range extender assembly is equal to the first required power P z1 The first power difference between |P M1 The absolute value of | is greater than or equal to the first preset threshold P Q When |P1-P z1 |=|P M1 |≥P Q When the first power difference |P M1 The first torque difference corresponding to the first torque difference is denoted as T M1 , the first torque difference T M1 The calculation formula is as follows:

[0072]

[0073] Where: T M1 Represents the first torque difference, in Newton-meters (Nm);

[0074] n z1 Represents the first target speed of the motor, in revolutions per minute (r / min);

[0075] P M1 represents the first power difference;

[0076] 9550 is a constant.

[0077] In the first torque difference T M1 After the calculation, the first preset torque of the range extender assembly needs to be obtained; the first preset torque is recorded as T x1 , and the first preset torque T x1 is the initial preset torque of the range extender assembly, that is, the torque at the beginning of the range extender assembly; then it is necessary to obtain the first preset torque T of the range extender assembly x1 Afterwards, the first preset torque T needs to be calculated x1 and the first torque difference T M1 The second torque difference between the two is denoted as T M2 , that is, the second torque difference T M2 = the first preset torque T x1 -The first torque difference TM1 Then, the second torque difference T needs to be calculated M2 The difference between the first preset torque and the first preset torque is within the second preset threshold range, the second preset threshold range is [-10, 10], if the second torque difference T M2 If the difference between the first preset torque and the second preset torque is within [-10, 10], then the second torque difference T M2 Calculate the first adjustment power of the corresponding range extender assembly, the first adjustment power is recorded as P y1 , the first adjustment power P y1 The calculation formula is as follows:

[0078]

[0079] Where: T M2 Represents the second torque difference, in Newton-meters (Nm);

[0080] n z1 Represents the first target speed of the motor, in revolutions per minute (r / min);

[0081] P y1 represents the first power difference;

[0082] 9550 is a constant.

[0083] When the first adjustment power P is calculated y1 After that, it is necessary to calculate the first adjustment power P of the range extender assembly y1 With the first required power P z1 The absolute value of the second power difference between |P M2 |, calculate the absolute value of the second power difference |P M2 |Afterwards, the absolute value of the second power difference |P M2 | and the second preset threshold P Q When the absolute value of the second power difference |P M2 | <P Q When , it can be concluded that the battery of the range-extended vehicle has reached a state of electrical balance;

[0084] When it is determined that the absolute value of the second power difference |P M2 |≥P Q Then it is also necessary to calculate the second power difference P M2 The corresponding third torque difference T M3 , the third torque difference T M3 The calculation formula is as follows:

[0085]

[0086] Where: T M3 Represents the third torque difference, in Newton-meters (Nm);

[0087] n z1 Represents the first target speed of the motor, in revolutions per minute (r / min);

[0088] P M2 represents the second power difference;

[0089] 9550 is a constant.

[0090] In the third torque difference T M3 After the calculation, the third torque difference T needs to be calculated M3 and the initial preset torque, if the difference is within the second preset threshold range, the second preset threshold range is [-10, 10], if the third torque difference T M3 The difference between the initial preset torque and the third torque difference T is within [-10, 10]. M3 Calculate the corresponding second adjustment power of the range extender assembly, the second adjustment power is recorded as P y2 , the second adjustment power P y2 The calculation formula is as follows:

[0091]

[0092] Where: T M3 Represents the third torque difference, in Newton-meters (Nm);

[0093] n z1 Represents the first target speed of the motor, in revolutions per minute (r / min);

[0094] P y2 represents the first power difference;

[0095] 9550 is a constant.

[0096] When calculating the second adjustment power P y2 After that, it is necessary to calculate the second adjustment power P of the range extender assembly y2 With the first required power P z1 The absolute value of the third power difference between |P M3 |, calculate the absolute value of the third power difference |P M3 Afterwards, the absolute value of the third power difference |P M3 |With the first preset threshold P Q When the absolute value of the third power difference |PM3 | <P Q When the absolute value of the third power difference |P M3 |≥P Q When the i+2nd torque difference corresponding to the i+1th power difference is calculated repeatedly, it is necessary to repeatedly calculate the i+2nd torque difference corresponding to the i+1th power difference until the i-th adjusted power is equal to the first required power P z1 The absolute value of the i+1th power difference between the two is less than the first preset threshold value P Q When the battery reaches an electrical balance state, or when it is determined that the difference between the initial preset torque and the (i+1)th torque is not within the second preset threshold range, the calculation of the i-th adjusted power of the range extender assembly according to the (i+1)th torque difference is stopped.

[0097] Example 2

[0098] The embodiment of the present application further provides a battery balance control device for a range-extended vehicle, comprising a collection module, a calculation module, and a processing module connected in sequence;

[0099] The acquisition module is configured to receive the vehicle power requirement of the range-extended vehicle and obtain a target speed according to the required power;

[0100] The calculation module is configured to calculate the target torque according to the required power and the target speed;

[0101] The processing module is configured to drive the range extender assembly to generate electricity at the target speed and the target torque, and to collect the output power of the range extender assembly; the processing module is further configured to: determine that a battery electrical balance state is reached when an absolute value of a first power difference between the output power of the range extender assembly and the required power is less than a first preset threshold.

[0102] Specifically, in this embodiment,

[0103] Example 3

[0104] This embodiment provides a battery balance control device for a range-extended vehicle, the battery balance control device for a range-extended vehicle comprising:

[0105] A memory, a processor, and a computer program stored on the memory and executable on the processor;

[0106] When the computer program is executed by the processor, the following is achieved: Figure 1 and Figure 2 Any step of the range-extended vehicle battery balance control method.

[0107] Example 4:

[0108] This embodiment provides a computer-readable storage medium on which a range-extended vehicle battery balance control program is stored. When the range-extended vehicle battery balance control program is executed by a processor, the following is achieved: Figure 1 and Figure 2 Any step of the range-extended vehicle battery balance control method.

[0109] Embodiment 5:

[0110] This embodiment provides a server 400, such as Figure 3 As shown, the server 400 includes a central processing unit (CPU) 401, which can perform various appropriate actions and processes according to programs stored in a read-only memory (ROM) 402 or programs loaded from a storage unit into a random access memory (RAM) 403. Various programs and data required for system operation are also stored in the RAM 403. The CPU 401, ROM 402, and RAM 403 are connected to each other via a bus 404. An input / output (I / O) interface 405 is also connected to the bus 404.

[0111] The following components are connected to the I / O interface 405: an input section 406 including a keyboard, a mouse, and the like; an output section 407 including devices such as a cathode ray tube (CRT), a liquid crystal display (LCD), and a speaker; a storage section 408 including a hard disk; and a communication section 409 including a network interface card such as a LAN card or a modem. The communication section 409 performs communication processing via a network such as the Internet. A drive is also connected to the I / O interface 405 as needed. Removable media 411, such as a magnetic disk, an optical disk, a magneto-optical disk, or a semiconductor memory, is installed in the drive 410 as needed, so that computer programs read therefrom can be installed into the storage section 408 as needed.

[0112] In particular, according to an embodiment of the present invention, the above reference Figure 1 and Figure 2 The described processes may be implemented as computer software programs. For example, an embodiment of the present invention includes a computer program product comprising a computer program carried on a computer readable medium, the computer program including instructions for executing Figure 1 and Figure 2 In such an embodiment, the computer program may be downloaded and installed from a network via the communication section 409 and / or installed from the removable medium 411 .

[0113] It should be noted that the computer-readable medium described in the present invention can be a computer-readable signal medium or a computer-readable storage medium, or any combination thereof. A computer-readable storage medium can be, for example, but not limited to, an electrical, magnetic, optical, electromagnetic, infrared, or semiconductor system, apparatus, or device, or any combination thereof. More specific examples of computer-readable storage media can include, but are not limited to, an electrical connection having one or more conductors, a portable computer disk, a hard disk, random access memory (RAM), read-only memory (ROM), erasable programmable read-only memory (EPROM or flash memory), optical fiber, a portable compact disk read-only memory (CD-ROM), an optical storage device, a magnetic storage device, or any suitable combination thereof. In the present invention, a computer-readable storage medium can be any tangible medium containing or storing a program that can be used by or in conjunction with an instruction execution system, apparatus, or device. In the present invention, a computer-readable signal medium can include a data signal propagated in baseband or as part of a carrier wave, carrying computer-readable program code. This propagated data signal can take a variety of forms, including but not limited to electromagnetic signals, optical signals, or any suitable combination thereof. A computer-readable signal medium may also be any computer-readable medium other than a computer-readable storage medium that can transmit, propagate, or transport a program for use by or in conjunction with an instruction execution system, apparatus, or device. Program code embodied on a computer-readable medium may be transmitted using any suitable medium, including but not limited to wireless, wireline, optical fiber cable, RF, or any suitable combination thereof.

[0114] The flowcharts and block diagrams in the accompanying drawings illustrate the possible implementation architecture, functions and operations of the methods and computer program products according to various embodiments of the present invention. In this regard, each box in the flowchart or block diagram can represent a module, program segment, or a part of code, and the above-mentioned module, program segment, or a part of code contains one or more executable instructions for realizing the specified logical function. It should also be noted that in some alternative implementations, the functions marked in the box can also occur in an order different from that marked in the accompanying drawings. For example, two boxes represented in succession can actually be executed substantially in parallel, and they can sometimes be executed in the opposite order, depending on the functions involved. It should also be noted that each box in the block diagram and / or flowchart, and the combination of boxes in the block diagram and / or flowchart, can be implemented with a dedicated hardware-based system that performs the specified function or operation, or can be implemented with a combination of dedicated hardware and computer instructions.

[0115] The units involved in the embodiments of the present invention may be implemented in software or in hardware, and the units described may also be provided in a processor. The names of these units do not, in some cases, constitute a limitation on the units themselves. The units or modules described may also be provided in a processor, for example, they may be described as: a processor comprising a first generation module, an acquisition module, a search module, a second generation module, and a merging module. The names of these units or modules do not, in some cases, constitute a limitation on the units or modules themselves, for example, the acquisition module may also be described as "an acquisition module for acquiring multiple instances to be detected in the basic table."

[0116] As another aspect, the present application also provides a computer-readable medium, which may be included in the server described in the above embodiment; or it may exist independently without being assembled into the electronic device. The above computer-readable medium carries one or more programs, and when the above one or more programs are executed by an electronic device, the electronic device implements the smart device leasing method described in the above embodiment. For example, the electronic device can implement the following Figures 1 to 2 The steps shown in .

[0117] It should be noted that although several modules or units of the device for action execution are mentioned in the detailed description above, this division is not mandatory. In fact, according to the embodiments of the present disclosure, the features and functions of two or more modules or units described above can be concretized in one module or unit. Conversely, the features and functions of one module or unit described above can be further divided into multiple modules or units to be concretized.

[0118] This article uses specific examples to illustrate the principles and implementation methods of this application. The description of the above embodiments is only used to help understand the method and core ideas of this application. The above is only the preferred implementation method of this application. It should be pointed out that due to the limitations of textual expression, there are objectively infinite specific structures. For ordinary technicians in this technical field, without departing from the principles of the present invention, they can also make several improvements, modifications or changes, and can also combine the above technical features in an appropriate manner; these improvements, modifications, changes or combinations, or the direct application of the inventive concept and technical solution to other occasions without improvement, should be regarded as the scope of protection of this application.

Claims

1. A battery balance control method for a range-extended vehicle, characterized in that: include: receiving a vehicle power requirement of the range-extended vehicle, and obtaining a target speed according to the power requirement; Calculating a target torque according to the required power and the target speed; driving the range extender assembly to generate electricity at the target speed and the target torque, and collecting the output power of the range extender assembly; When it is determined that an absolute value of a first power difference between the output power of the range extender assembly and the required power is less than a first preset threshold, a battery electrical balance state is reached; When it is determined that the absolute value of the first power difference between the output power of the range extender assembly and the required power is greater than or equal to a first preset threshold, the method includes: calculating a first torque difference corresponding to the first power difference; Obtaining a first preset torque of the range extender assembly; wherein the first preset torque is an initial torque of the range extender assembly; calculating a second torque difference between the first preset torque and the first torque difference; calculating a first adjusted power of the range extender assembly according to the second torque difference; Determine the first adjustment power of the range extender assembly and the required power Power difference ( ≥2) is less than the first preset threshold, the battery reaches an electrical balance state.

2. The range-extended vehicle battery balance control method according to claim 1, characterized in that: The step of obtaining the target speed according to the required power includes: Calling a calibration database of the range-extended vehicle, the calibration database including at least: a plurality of sets of required power and target speeds corresponding to the required power; The calibration database is traversed to determine the target speed corresponding to the required power.

3. The range-extended vehicle battery balance control method according to claim 1, characterized in that: The following steps are also included: Determine when the first adjustment power of the range extender assembly is the first When the absolute value of the power difference is greater than or equal to the first preset threshold, Calculate the The power difference corresponds to the Torque difference; Calculate the first preset torque and the The torque difference between Torque difference; According to the said The torque difference is calculated for the range extender assembly Adjust power; Determine when the range extender assembly The difference between the adjustment power and the required power When the absolute value of the power difference is less than the first preset threshold, the battery reaches an electrical balance state.

4. The range-extended vehicle battery balance control method according to claim 3, characterized in that: The following steps are also included: Determine when the first adjustment power of the range extender assembly is the first When the absolute value of the power difference is greater than or equal to the first preset threshold, the calculation of the The power difference corresponds to the Torque difference.

5. The range-extended vehicle battery balance control method according to claim 3 or 4, characterized in that: The following steps are also included: Judge the When the difference between the torque difference and the first preset torque is less than or equal to the second preset threshold range, the first preset torque is repeatedly calculated. The power difference corresponds to the Torque difference.

6. The range-extended vehicle battery balance control method according to claim 3, characterized in that: The following steps are also included: Judge the When the difference between the torque difference and the first preset torque is greater than a second preset threshold range, the execution of the first preset torque is stopped. The torque difference is calculated for the range extender assembly Adjust the power.

7. A battery balance control device for a range-extended vehicle, characterized in that: include: A collection module is configured to: receive the required power of the extended-range vehicle, and obtain a target speed according to the required power; a calculation module configured to calculate a target torque according to the required power and the target speed; a processing module, the processing module being configured to: drive the range extender assembly to generate electricity at the target speed and the target torque, and collect the output power of the range extender assembly; the processing module being further configured to: determine that a battery electrical balance state is reached when an absolute value of a first power difference between the output power of the range extender assembly and the required power is less than a first preset threshold; The processing module is configured to: when it is determined that the absolute value of the first power difference between the output power of the range extender assembly and the required power is greater than or equal to a first preset threshold, calculate a first torque difference corresponding to the first power difference; Obtaining a first preset torque of the range extender assembly, wherein the first preset torque is a torque at the beginning of the range extender assembly; and calculating a second torque difference between the first preset torque and the first torque difference; Calculate the first adjusted power of the range extender assembly according to the second torque difference; and determine the first difference between the first adjusted power of the range extender assembly and the required power. Power difference ( ≥2) is less than the first preset threshold, the battery reaches an electrical balance state.

8. A terminal device, characterized in that: The range-extended vehicle battery balancing device includes a memory, a processor, and a computer program stored in the memory and running on the processor; When the computer program is executed by the processor, the steps of the range-extended vehicle battery balance control method according to any one of claims 1 to 6 are implemented.

9. A computer-readable storage medium, characterized in that The computer-readable storage medium stores a range-extended vehicle battery balance control program, which, when executed by a processor, implements the steps of the range-extended vehicle battery balance control method according to any one of claims 1 to 6.

Images