Battery energy recovery control method, device and storage medium for electric vehicles

Abstract

The present invention discloses a battery energy recovery control method for an electric vehicle, a computer device, and a storage medium. The method comprises detecting a first temperature, wherein the first temperature is the temperature of a first power battery in the electric vehicle; determining a first energy recovery intensity based on the first temperature, wherein the first energy recovery intensity is negatively correlated with the first temperature; and recovering the electric vehicle's driving kinetic energy into the first power battery based on the first energy recovery intensity. The present invention facilitates maintaining the temperature of the first power battery at an appropriate level, can match the operating conditions and performance requirements of the first power battery, maintains the first power battery in a good operating environment, facilitates maintaining the power and efficiency of charging and discharging, and extends the life of the first power battery. The present invention has broad application in the field of automotive technology.

Description

Technical Field

[0001] The present invention relates to the field of automobile technology, and in particular to a battery energy recovery control method, a computer device, and a storage medium for an electric vehicle. Background Art

[0002] During the driving process of an electric vehicle, the kinetic energy of the vehicle can be converted back into electrical energy and charged back into the battery, thereby achieving the effects of reducing energy consumption and extending driving range. Current battery energy recovery control technology for electric vehicles is mainly based on considerations such as energy conservation and comfort. For example, multiple levels of adjustable recovery intensity are set. A stronger recovery intensity focuses on recovering as much electrical energy as possible, thereby achieving energy conservation. A weaker recovery intensity can reduce the jerkiness of the electric vehicle during the process of driving and braking, thereby improving driving comfort. However, current battery energy recovery control technology for electric vehicles pays less attention to the impact of energy recovery on the power battery. The energy recovery strategy is often easily mismatched with the performance or operating conditions of the power battery, resulting in the energy recovery effect not meeting the expected level. Summary of the Invention

[0003] In view of the technical problems that the current battery energy recovery control of electric vehicles is not designed for the power battery, the energy recovery strategy is often easily mismatched with the performance or operating conditions of the power battery, resulting in the energy recovery effect not reaching the expected level, etc., the purpose of the present invention is to provide a battery energy recovery control method, computer device and storage medium for electric vehicles.

[0004] In one aspect, an embodiment of the present invention includes a method for controlling battery energy recovery in an electric vehicle, comprising:

[0005] Detecting a first temperature; the first temperature is the temperature of a first power battery on the electric vehicle;

[0006] determining a first energy recovery intensity according to the first temperature; wherein the first energy recovery intensity is negatively correlated with the first temperature;

[0007] The driving kinetic energy of the electric vehicle is recovered into the first power battery according to the first energy recovery intensity.

[0008] Furthermore, determining a first energy recovery intensity according to the first temperature includes:

[0009] Set high temperature threshold and low temperature threshold;

[0010] When the first temperature is higher than the high temperature threshold, setting the first energy recovery intensity to a weak level;

[0011] When the first temperature is lower than the low temperature threshold, the first energy recovery intensity is set to a strong level.

[0012] Furthermore, the high temperature threshold is higher than the low temperature threshold.

[0013] Furthermore, determining a first energy recovery intensity according to the first temperature includes:

[0014] When the first temperature is higher than the low temperature threshold and lower than the high temperature threshold, the first energy recovery intensity is set to a level stronger than the weak level and weaker than the strong level; the relative position of the first energy recovery intensity between the weak level and the strong level is the same as the relative position of the first temperature between the low temperature threshold and the high temperature threshold.

[0015] Furthermore, the recovering of the running kinetic energy of the electric vehicle to the first power battery according to the first energy recovery intensity includes:

[0016] According to the first energy recovery intensity, setting the motor power generation torque of the electric vehicle; the motor power generation torque is positively correlated with the first energy recovery intensity;

[0017] The motor of the electric vehicle is controlled to recover electric energy according to the torque generated by the motor.

[0018] Furthermore, the battery energy recovery control method of the electric vehicle further includes:

[0019] detecting a second temperature; wherein the second temperature is the temperature of a second power battery on the electric vehicle;

[0020] determining the first energy recovery intensity and the second energy recovery intensity according to the first temperature and the second temperature;

[0021] Recovering running kinetic energy of the electric vehicle according to the first energy recovery intensity and the second energy recovery intensity;

[0022] recovering a portion of the recovered driving kinetic energy corresponding to the first energy recovery intensity into the first power battery;

[0023] A portion of the recovered driving kinetic energy corresponding to the second energy recovery intensity is recovered into the second power battery.

[0024] Furthermore, determining the first energy recovery intensity and the second energy recovery intensity according to the first temperature and the second temperature includes:

[0025] Setting the first energy recovery intensity to be negatively correlated with the first temperature;

[0026] The second energy recovery intensity is set to be negatively correlated with the second temperature.

[0027] Furthermore, determining the first energy recovery intensity and the second energy recovery intensity according to the first temperature and the second temperature includes:

[0028] Set high temperature threshold and low temperature threshold;

[0029] When both the first temperature and the second temperature are higher than the high temperature threshold, setting the sum of the first energy recovery intensity and the second energy recovery intensity to a weak level, and setting the ratio of the first energy recovery intensity to the second energy recovery intensity to be equal to the ratio of the temperature difference between the first temperature and the high temperature threshold and the temperature difference between the second temperature and the high temperature threshold;

[0030] When both the first temperature and the second temperature are lower than the low temperature threshold, setting the sum of the first energy recovery intensity and the second energy recovery intensity to a strong level, and setting the ratio of the first energy recovery intensity to the second energy recovery intensity to be equal to the ratio of the temperature difference between the low temperature threshold and the first temperature and the temperature difference between the low temperature threshold and the second temperature;

[0031] When the first temperature is higher than the high temperature threshold and the second temperature is lower than the low temperature threshold, setting the first energy recovery intensity to a weak level and setting the second energy recovery intensity to a strong level;

[0032] When the first temperature is lower than the low temperature threshold and the second temperature is higher than the high temperature threshold, the first energy recovery intensity is set to a strong level and the second energy recovery intensity is set to a weak level.

[0033] On the other hand, an embodiment of the present invention also includes a computer device, including a memory and a processor, wherein the memory is used to store at least one program, and the processor is used to load the at least one program to execute the battery energy recovery control method of the electric vehicle in the embodiment.

[0034] On the other hand, an embodiment of the present invention further includes a storage medium storing a program executable by a processor, wherein the program executable by the processor is used to execute the battery energy recovery control method of the electric vehicle in the embodiment when executed by the processor.

[0035] The beneficial effects of the present invention are as follows: the battery energy recovery control method of the electric vehicle in the embodiment is conducive to maintaining the temperature of the first power battery at an appropriate level, can match the operating conditions and performance requirements of the first power battery, so that the first power battery maintains a good working environment, is conducive to maintaining the power and efficiency of charging and discharging, and prolongs the life of the first power battery. BRIEF DESCRIPTION OF THE DRAWINGS

[0036] Figure 1Schematic diagram of the structure of an electric vehicle to which the battery energy recovery control method of the electric vehicle can be applied in the embodiment;

[0037] Figure 2 Schematic diagram of the steps of the battery energy recovery control method of an electric vehicle in an embodiment;

[0038] Figure 3 Schematic diagram of a flow chart of a battery energy recovery control method for an electric vehicle in an embodiment;

[0039] Figure 4 Schematic diagram of the relationship between energy recovery intensity and motor power generation torque in the embodiment;

[0040] Figure 5 and Figure 6 Schematic diagram of the effect of the battery energy recovery control method of an electric vehicle in an embodiment. DETAILED DESCRIPTION

[0041] In this embodiment, the battery energy recovery control method of an electric vehicle can be applied to Figure 1 In the electric vehicle shown. Figure 1 When an electric vehicle is running, the motor control module obtains electrical energy from the battery and supplies the electrical energy to the motor. The motor generates a driving torque, outputs mechanical energy to the wheels, and drives the vehicle body to move. When the electric vehicle brakes, the motor control module controls the motor to generate a braking torque. The motor obtains mechanical energy from the wheels and converts it into electrical energy. The motor control module obtains electrical energy from the motor and charges the electrical energy back to the battery, thereby realizing energy recovery.

[0042] In this embodiment, the battery installed in the electric vehicle includes a first power battery. The first power battery is a relatively complete battery module, specifically comprising a plurality of assembled battery cells, as well as wiring connecting these battery cells, protection circuits, and heat dissipation components. A temperature sensor is mounted on the first power battery to detect the temperature of the first power battery. The temperature of the first power battery measured by the temperature sensor may be affected by the ambient temperature and the temperature generated by charging and discharging of the first power battery.

[0043] Reference Figure 2 , the battery energy recovery control method of an electric vehicle comprises the following steps:

[0044] S1. Detecting a first temperature;

[0045] S2. Determine the first energy recovery intensity according to the first temperature;

[0046] S3. Recover the driving kinetic energy of the electric vehicle into the first power battery according to the first energy recovery intensity.

[0047] In this embodiment, the process of steps S1-S3 is as follows Figure 3 shown.

[0048] Reference Figure 3 , step S1 is executed by the battery management system BMS. The battery management system BMS detects the temperature of the first power battery through a temperature sensor to obtain a first temperature. A high temperature threshold and a low temperature threshold are set in the battery management system BMS, where the high temperature threshold and the low temperature threshold are both fixed values representing the temperature magnitude, and the high temperature threshold can be equal to or higher than the low temperature threshold. When the temperature is higher than the high temperature threshold, it can be determined as high temperature, and when the temperature is lower than the low temperature threshold, it can be determined as low temperature. In this embodiment, the high temperature threshold is set to 40°C and the low temperature threshold is set to 0°C.

[0049] Reference Figure 3 The battery management system BMS compares the first temperature with the high temperature threshold (40°C) and the low temperature threshold (0°C) respectively, and determines whether the first temperature is higher than the high temperature threshold (40°C), lower than the low temperature threshold (0°C), or between the high temperature threshold (40°C) and the low temperature threshold (0°C), and obtains a judgment result.

[0050] Reference Figure 3 Step S2 is executed by the vehicle control unit (VCU). The VCU obtains from the battery management system (BMS) a determination of the relative magnitude of the first temperature to the high and low temperature thresholds. If the first temperature is above the high temperature threshold (40°C), the VCU sets the first energy recovery intensity to a high level. If the first temperature is below the low temperature threshold (0°C), the VCU sets the first energy recovery intensity to a low level.

[0051] In this embodiment, the first energy recovery intensity can be quantitatively represented by a MAP table generated by the vehicle control unit VCU. When the first energy recovery intensity is at a high level, the first energy recovery intensity is represented by a larger value in the MAP; when the first energy recovery intensity is at a low level, the first energy recovery intensity is represented by a smaller value in the MAP.

[0052] Reference Figure 3 Step S3 is performed by the motor control unit MCU. The vehicle control unit VCU sends a map indicating the first energy recovery intensity to the motor control unit MCU. The motor control unit MCU converts the value indicating the first energy recovery intensity in the map into a value indicating the motor's generated torque.

[0053] For example, refer to Figure 4When the first energy recovery intensity is at a strong level, the motor control unit MCU controls the motor's generating torque to be -200Nm (the negative sign indicates that the motor is working in a generating state, converting the kinetic energy of the wheels into electrical energy). The motor's generating torque is large, and the power of the electric vehicle's driving kinetic energy converted into electrical energy is greater; when the first energy recovery intensity is at a weak level, the motor control unit MCU controls the motor's generating torque to be -100Nm. The motor's generating torque is small, and the power of the electric vehicle's driving kinetic energy converted into electrical energy is smaller.

[0054] In step S3, the motor control unit MCU transmits the electric energy generated by the motor to the battery management system BMS, and the battery management system BMS charges the electric energy back to the first power battery, thereby realizing electric energy recovery.

[0055] In this embodiment, the effect of executing steps S1-S3 is as follows: Figure 5 and Figure 6 As shown. Figure 5 When the first temperature of the first power battery is higher than the high temperature threshold, that is, at a relatively high level, by setting the first energy recovery intensity to a weak level, the charging power generated by the electric energy recovery on the first power battery is reduced, which is conducive to reducing the temperature of the first power battery to an appropriate level; Figure 6 When the first temperature of the first power battery is below the low-temperature threshold, i.e., at a relatively low level, the first energy recovery intensity is set to a strong level to increase the charging power generated by the electric energy recovery on the first power battery, thereby facilitating the temperature of the first power battery to rise to an appropriate level. Therefore, executing steps S1-S3 facilitates maintaining the temperature of the first power battery at an appropriate level, matching the operating conditions and performance requirements of the first power battery, maintaining a favorable operating environment for the first power battery, and facilitating the maintenance of charging and discharging power and efficiency, thereby extending the life of the first power battery.

[0056] In this embodiment, when the first temperature is higher than the low-temperature threshold (0°C) and lower than the high-temperature threshold (40°C), the first energy recovery intensity is set to a level that is stronger than the weak level and weaker than the strong level, and the relative position of the first energy recovery intensity between the weak level and the strong level is the same as the relative position of the first temperature between the low-temperature threshold and the high-temperature threshold. Specifically, the first energy recovery intensity satisfies the following equation: first energy recovery intensity / (weak level - strong level) = first temperature / (high-temperature threshold - low-temperature threshold). That is, when the first temperature fluctuates between the low-temperature threshold and the high-temperature threshold, the first energy recovery intensity also fluctuates linearly between the weak level and the strong level, and the motor's power generation torque also fluctuates linearly between a larger torque (-200 Nm) and a smaller torque (-100 Nm). This avoids the sense of frustration caused by a sudden change in the motor's power generation torque, which is beneficial to improving the driving comfort of the electric vehicle.

[0057] In this embodiment, in addition to the first power battery, the electric vehicle may also be equipped with a second power battery. Like the first power battery, the second power battery is also a relatively complete battery module. Specifically, the second power battery may include multiple assembled battery cells, as well as wiring connecting these battery cells, protection circuits, and heat dissipation components. The second power battery is relatively independent of the first power battery and can be connected in parallel with the first power battery. This means that the electric vehicle can operate normally and recover kinetic energy using only either the second or the first power battery.

[0058] A temperature sensor is installed on the second power battery, and the temperature sensor can detect the temperature of the second power battery. The temperature of the second power battery measured by the temperature sensor may be affected by the ambient temperature and the temperature generated by charging and discharging of the second power battery.

[0059] In the case where the electric vehicle is provided with a second power battery, the battery energy recovery control method of the electric vehicle further includes the following steps:

[0060] S4. Detecting a second temperature;

[0061] S5. Determine the first energy recovery intensity and the second energy recovery intensity according to the first temperature and the second temperature;

[0062] S6. Recovering the kinetic energy of the electric vehicle according to the first energy recovery intensity and the second energy recovery intensity;

[0063] S7. recovering the portion of the driving kinetic energy corresponding to the first energy recovery intensity to the first power battery;

[0064] S8. Recover the portion of the recovered driving kinetic energy corresponding to the second energy recovery intensity into the second power battery.

[0065] Step S4 is executed by the battery management system BMS. The battery management system BMS detects the temperature of the second power battery through a temperature sensor to obtain a second temperature.

[0066] Step S5 is executed by the vehicle control unit VCU. When the vehicle control unit VCU executes step S5, that is, the step of determining the first energy recovery intensity and the second energy recovery intensity based on the first temperature and the second temperature, the following steps may be specifically performed:

[0067] S501. Setting the first energy recovery intensity to be negatively correlated with the first temperature;

[0068] S502. Set the second energy recovery intensity to be negatively correlated with the second temperature.

[0069] In steps S501 and S502, the first energy recovery intensity can be independent of the second energy recovery intensity, that is, there may be no definite relationship between the magnitude of the first energy recovery intensity and the magnitude of the second energy recovery intensity, and the magnitude of the first energy recovery intensity and the magnitude of the second energy recovery intensity are set separately.

[0070] When the vehicle control unit VCU executes step S5, that is, the step of determining the first energy recovery intensity and the second energy recovery intensity according to the first temperature and the second temperature, the vehicle control unit VCU may specifically perform the following steps:

[0071] S503. Set high temperature threshold and low temperature threshold;

[0072] S504. When both the first temperature and the second temperature are higher than the high temperature threshold, setting the sum of the first energy recovery intensity and the second energy recovery intensity to a weak level, and setting the ratio of the first energy recovery intensity to the second energy recovery intensity to be equal to the ratio of the temperature difference between the first temperature and the high temperature threshold and the temperature difference between the second temperature and the high temperature threshold;

[0073] S505. When both the first temperature and the second temperature are lower than the low temperature threshold, setting the sum of the first energy recovery intensity and the second energy recovery intensity to a strong level, and setting the ratio of the first energy recovery intensity to the second energy recovery intensity to be equal to the ratio of the temperature difference between the low temperature threshold and the first temperature, and the temperature difference between the low temperature threshold and the second temperature;

[0074] S506. When the first temperature is higher than the high temperature threshold and the second temperature is lower than the low temperature threshold, the first energy recovery intensity is set to a weak level and the second energy recovery intensity is set to a strong level;

[0075] S507 . When the first temperature is lower than the low temperature threshold and the second temperature is higher than the high temperature threshold, the first energy recovery intensity is set to a strong level and the second energy recovery intensity is set to a weak level.

[0076] In step S503, the high temperature threshold may be set to a relatively high fixed value (eg, 40°C), and the low temperature threshold may be set to a relatively low fixed value (eg, 0°C).

[0077] In step S504, when the first temperature and the second temperature are both higher than the high temperature threshold, referring to the principle of step S2, the temperatures of the first power battery and the second power battery are both at a high level, and the temperatures of the first power battery and the second power battery can be reduced by low electric energy recovery power. Specifically, the sum of the first energy recovery intensity and the second energy recovery intensity is set to a weak level (specifically, it can be quantitatively represented by the MAP table generated by the vehicle control unit VCU, that is, the first energy recovery intensity + the second energy recovery intensity = a small fixed value), and then the ratio of the first energy recovery intensity and the second energy recovery intensity is set to be equal to the temperature difference between the first temperature and the high temperature threshold, and the ratio of the temperature difference between the second temperature and the high temperature threshold, that is, it satisfies: first energy recovery intensity / second energy recovery intensity = (first temperature - high temperature threshold) / (second temperature - high temperature threshold). Combining the above two equations, we can get:

[0078] First energy recovery intensity = smaller fixed value × (first temperature - high temperature threshold) / [(first temperature - high temperature threshold) + (second temperature - high temperature threshold)];

[0079] Second energy recovery intensity=smaller fixed value / [(first temperature-high temperature threshold) / (second temperature-high temperature threshold)+1].

[0080] According to the above formula, when the first temperature is greater than the second temperature, that is, the temperature of the first power battery is higher than that of the second power battery, then the first energy recovery intensity is less than the second energy recovery intensity. This means that the charging power applied to the first power battery during energy recovery is lower than that applied to the second power battery. This helps the first power battery cool down faster than the second power battery, thereby promoting temperature balance between the first and second power batteries and stabilizing the performance and operating conditions of the first and second power batteries. Furthermore, when the sum of the first and second energy recovery intensities is relatively small, that is, the overall charging power applied to the first and second power batteries during energy recovery is relatively low, which helps cool the power batteries overall.

[0081] In step S505, when the first temperature and the second temperature are both lower than the low temperature threshold, referring to the principle of step S2, the temperatures of the first power battery and the second power battery are both at a low level, and the temperatures of the first power battery and the second power battery can be increased by high electric energy recovery power. Specifically, the sum of the first energy recovery intensity and the second energy recovery intensity is set to a strong level (specifically, it can be quantitatively represented by the MAP table generated by the vehicle control unit VCU, that is, the first energy recovery intensity + the second energy recovery intensity = a larger fixed value), and then the ratio of the first energy recovery intensity and the second energy recovery intensity is set to be equal to the temperature difference between the low temperature threshold and the first temperature, and the ratio of the temperature difference between the low temperature threshold and the second temperature, that is, it satisfies: first energy recovery intensity / second energy recovery intensity = (low temperature threshold - first temperature) / (low temperature threshold - second temperature). Combining the above two equations, we can get:

[0082] First energy recovery intensity = larger fixed value × (low temperature threshold - first temperature) / [(low temperature threshold - first temperature) + (low temperature threshold - second temperature)];

[0083] Second energy recovery intensity=larger fixed value / [(low temperature threshold-first temperature) / (low temperature threshold-second temperature)+1].

[0084] According to the above formula, when the first temperature is lower than the second temperature (i.e., the temperature of the first power battery is lower than that of the second power battery), then the first energy recovery intensity is higher than the second energy recovery intensity. This means that when energy recovery is performed, the charging power applied to the first power battery is greater than that applied to the second power battery. This helps the first power battery heat up faster than the second power battery, thereby promoting temperature balance between the first and second power batteries and stabilizing the performance and operating conditions of the first and second power batteries. Furthermore, when the sum of the first and second energy recovery intensities is greater (i.e., when energy recovery is performed, the overall charging power applied to the first and second power batteries is greater), this helps the overall temperature of the power batteries rise.

[0085] In step S506, when the first temperature is higher than the high temperature threshold and the second temperature is lower than the low temperature threshold, referring to the principle of step S2, the temperature of the first power battery is at a higher level, and low electric energy recovery power can be used to reduce the temperature of the first power battery; the temperature of the second power battery is at a lower level, and high electric energy recovery power can be used to increase the temperature of the second power battery. Therefore, the first energy recovery intensity is set to a weak level, and the second energy recovery intensity is set to a strong level.

[0086] In step S507, when the first temperature is lower than the low-temperature threshold and the second temperature is higher than the high-temperature threshold, referring to the principle of step S2, the temperature of the first power battery is at a low level, and a high electric energy recovery power can be used to increase the temperature of the first power battery; the temperature of the second power battery is at a high level, and a low electric energy recovery power can be used to reduce the temperature of the second power battery. Therefore, the first energy recovery intensity is set to a strong level, and the second energy recovery intensity is set to a weak level.

[0087] The vehicle control unit VCU generates a MAP table based on the first energy recovery intensity and the second energy recovery intensity obtained through steps S503-S507, and sends the MAP table to the motor control unit MCU. Steps S6-S8 are executed by the motor control unit MCU.

[0088] In step S6, the motor control unit MCU can determine the power generation torque of the motor based on the sum of the first energy recovery intensity and the second energy recovery intensity (the power generation torque can be set with an upper limit, below which the power generation torque is positively correlated with the sum of the first energy recovery intensity and the second energy recovery intensity), and then control the motor to generate electricity according to the power generation torque, thereby recovering the driving kinetic energy of the electric vehicle.

[0089] In steps S7 and S8, the motor control unit MCU can distribute the recovered electric energy obtained by recovering the driving kinetic energy of the electric vehicle according to the ratio of the first energy recovery intensity to the second energy recovery intensity, that is, the first charging power ∝ recovered electric energy × the first energy recovery intensity / (first energy recovery intensity + second energy recovery intensity), the second charging power ∝ recovered electric energy × the second energy recovery intensity / (first energy recovery intensity + second energy recovery intensity).

[0090] In step S7, the motor control unit MCU charges the first power battery according to the first charging power. In step S8, the motor control unit MCU charges the second power battery according to the second charging power, thereby recovering the kinetic energy of the electric vehicle and distributing the energy back to the first power battery and the second power battery.

[0091] In this embodiment, by executing steps S4-S7, a second power battery can be configured to assist the first power battery in recovering electrical energy. The same recovery control logic based on steps S1-S3 is applied to both the first and second power batteries, and the recovered electrical energy is distributed between the first and second power batteries, maintaining a temperature balance between the first and second power batteries, thereby achieving balanced overall performance of the power batteries. Since two power batteries are provided simultaneously, even if the energy recovery intensity (first energy recovery intensity) of one power battery (e.g., the first power battery) is limited due to excessive temperature, the other power battery (the second power battery) may still maintain an appropriate temperature and not be limited in its energy recovery intensity (the second energy recovery intensity). This prevents excessive restriction of energy recovery intensity, which could reduce the power battery's electrical energy utilization efficiency.

[0092] A computer program that executes the battery energy recovery control method for an electric vehicle in this embodiment can be written and written into a storage medium or a computer device. When the computer program is read out and run, the battery energy recovery control method for an electric vehicle in this embodiment is executed, thereby achieving the same technical effect as the battery energy recovery control method for an electric vehicle in the embodiment.

[0093] It should be noted that, unless otherwise specified, when a feature is referred to as being "fixed" or "connected" to another feature, it may be directly fixed or connected to the other feature, or it may be indirectly fixed or connected to the other feature. In addition, the descriptions of up, down, left, right, etc. used in this disclosure are only relative to the relative positional relationship of the components of the present disclosure in the accompanying drawings. The singular forms of "a", "said" and "the" used in this disclosure are also intended to include the plural forms, unless the context clearly indicates otherwise. In addition, unless otherwise defined, all technical and scientific terms used in this embodiment have the same meaning as those generally understood by those skilled in the art. The terms used in the description of this embodiment are only for describing specific embodiments and are not intended to limit the present invention. The term "and / or" used in this embodiment includes any combination of one or more related listed items.

[0094] It should be understood that, although the present disclosure may adopt the term first, second, third etc. to describe various elements, these elements should not be limited to these terms.These terms are only used to distinguish the elements of the same type from each other.For example, without departing from the scope of the present disclosure, the first element may also be referred to as the second element, and similarly, the second element may also be referred to as the first element.The use of any and all examples or exemplary language ("for example", "such as" etc.) provided by the present embodiment is only intended to better illustrate embodiments of the present invention, and unless otherwise required, the scope of the present invention will not be limited.

[0095] It should be appreciated that embodiments of the present invention can be implemented or practiced by computer hardware, a combination of hardware and software, or by computer instructions stored in a non-transitory computer-readable memory. The methods can be implemented in a computer program using standard programming techniques, including a non-transitory computer-readable storage medium configured with a computer program, wherein the storage medium so configured causes the computer to operate in a specific and predefined manner, according to the methods and figures described in the specific embodiments. Each program can be implemented in a high-level procedural or object-oriented programming language to communicate with the computer system. However, if desired, the program can be implemented in assembly or machine language. In any case, the language can be a compiled or interpreted language. In addition, the program can be run on a programmed application-specific integrated circuit for this purpose.

[0096] In addition, the operations of the processes described in this embodiment may be performed in any suitable order, unless otherwise indicated in this embodiment or otherwise clearly contradicted by the context. The processes described in this embodiment (or variations and / or combinations thereof) may be performed under the control of one or more computer systems configured with executable instructions, and may be implemented as code (e.g., executable instructions, one or more computer programs, or one or more applications) that is executed collectively on one or more processors, by hardware, or a combination thereof. The computer program includes a plurality of instructions that can be executed by one or more processors.

[0097] Furthermore, the methods can be implemented in any type of computing platform that is operably connected to a suitable computer, including but not limited to a personal computer, a minicomputer, a mainframe, a workstation, a network or distributed computing environment, a separate or integrated computer platform, or in communication with a charged particle tool or other imaging device, etc. Various aspects of the present invention can be implemented as machine-readable code stored on a non-transitory storage medium or device, whether removable or integrated into a computing platform, such as a hard disk, an optical read and / or write storage medium, RAM, ROM, etc., so that it can be read by a programmable computer, and when the storage medium or device is read by the computer, it can be used to configure and operate the computer to perform the processes described herein. In addition, the machine-readable code, or portions thereof, can be transmitted over a wired or wireless network. When such media includes instructions or programs that implement the steps described above in conjunction with a microprocessor or other data processor, the invention described in this embodiment includes these and other different types of non-transitory computer-readable storage media. When programmed according to the methods and techniques of the present invention, the present invention also includes the computer itself.

[0098] The computer program can be applied to input data to perform the functions described in the present embodiment, thereby converting the input data to generate output data that is stored in a non-volatile memory. The output information can also be applied to one or more output devices such as a display. In a preferred embodiment of the present invention, the converted data represents a physical and tangible object, including a specific visual depiction of the physical and tangible object produced on the display.

[0099] The above description is merely a preferred embodiment of the present invention. The present invention is not limited to the aforementioned embodiments. As long as the technical effects of the present invention are achieved by the same means, any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention shall be included within the scope of protection of the present invention. Within the scope of protection of the present invention, various modifications and variations of the technical solutions and / or implementation methods are possible.

Claims

1. A battery energy recovery control method for an electric vehicle, characterized in that: The battery energy recovery control method of the electric vehicle includes: detecting a first temperature and a second temperature; wherein the first temperature is the temperature of a first power battery on the electric vehicle, and the second temperature is the temperature of a second power battery on the electric vehicle; determining a first energy recovery intensity and a second energy recovery intensity according to the first temperature and the second temperature; wherein the first energy recovery intensity is negatively correlated with the first temperature; Recovering running kinetic energy of the electric vehicle according to the first energy recovery intensity and the second energy recovery intensity; recovering a portion of the recovered driving kinetic energy corresponding to the first energy recovery intensity into the first power battery; recovering a portion of the recovered driving kinetic energy corresponding to the second energy recovery intensity into the second power battery; The determining, according to the first temperature and the second temperature, a first energy recovery intensity and a second energy recovery intensity includes: Set high temperature threshold and low temperature threshold; When the first temperature and the second temperature are both higher than the high temperature threshold, according to the formula First energy recovery intensity = first fixed value × (first temperature - high temperature threshold) / [(first temperature - high temperature threshold) + (second temperature - high temperature threshold)] Second energy recovery intensity = first fixed value / [(first temperature - high temperature threshold) / (second temperature - high temperature threshold) + 1], setting the first energy recovery intensity and the second energy recovery intensity; When the first temperature and the second temperature are both lower than the low temperature threshold, according to the formula First energy recovery intensity = second fixed value × (low temperature threshold - first temperature) / [(low temperature threshold - first temperature) + (low temperature threshold - second temperature)] Second energy recovery intensity = second fixed value / [(low temperature threshold - first temperature) / (low temperature threshold - second temperature) + 1], setting the first energy recovery intensity and the second energy recovery intensity; wherein the first fixed value is smaller than the second fixed value; When the first temperature is higher than the high temperature threshold and the second temperature is lower than the low temperature threshold, setting the first energy recovery intensity to a weak level and setting the second energy recovery intensity to a strong level; When the first temperature is lower than the low temperature threshold and the second temperature is higher than the high temperature threshold, the first energy recovery intensity is set to a strong level and the second energy recovery intensity is set to a weak level.

2. The battery energy recovery control method for an electric vehicle according to claim 1, characterized in that: The high temperature threshold is higher than the low temperature threshold.

3. The battery energy recovery control method for an electric vehicle according to claim 1, characterized in that: The recovering the running kinetic energy of the electric vehicle according to the first energy recovery intensity and the second energy recovery intensity includes: setting a motor power generation torque of the electric vehicle according to the first energy recovery intensity and the second energy recovery intensity; wherein the motor power generation torque is positively correlated with the sum of the first energy recovery intensity and the second energy recovery intensity; The motor of the electric vehicle is controlled to recover electric energy according to the torque generated by the motor.

4. A computer device, characterized in that: It includes a memory and a processor, the memory is used to store at least one program, and the processor is used to load the at least one program to execute the battery energy recovery control method of an electric vehicle according to any one of claims 1 to 3.

5. A computer-readable storage medium storing a program executable by a processor, characterized in that: The processor-executable program is used to execute the battery energy recovery control method for an electric vehicle as described in any one of claims 1 to 3 when executed by the processor.

Images