CN112092633B

CN112092633B - Vehicle braking energy recovery method and device, vehicle and storage medium

Info

Publication number: CN112092633B
Application number: CN202011004779.6A
Authority: CN
Inventors: 黄齐琼
Original assignee: Guangzhou Xiaopeng Motors Technology Co Ltd
Current assignee: Guangzhou Xiaopeng Motors Technology Co Ltd
Priority date: 2020-09-22
Filing date: 2020-09-22
Publication date: 2022-07-08
Anticipated expiration: 2040-09-22
Also published as: CN112092633A

Abstract

The application discloses a vehicle braking energy recovery method, a device, a vehicle and a storage medium, wherein the method is applied to the vehicle comprising a battery and a temperature control device, and comprises the following steps: when a braking instruction is received, determining braking information based on the braking instruction and the current running state of the vehicle; the braking information comprises information of energy recovery requirements in the vehicle braking process; acquiring the current working temperature and the ambient temperature of the battery; and controlling the working state of the temperature control equipment according to the braking information, the temperature and the ambient temperature. Through the implementation of this application, the electric energy that temperature control equipment can retrieve through the vehicle braking does work, avoids causing the harm to the battery because of the electric energy of retrieving can not satisfy battery charging demand.

Description

Vehicle braking energy recovery method and device, vehicle and storage medium

Technical Field

The present disclosure relates to the field of vehicle braking technologies, and in particular, to a method and an apparatus for recovering vehicle braking energy, a vehicle, and a storage medium.

Background

In recent years, with the development of electric vehicle technology, the popularity of electric vehicles has gradually increased. For an electric vehicle, a vehicle control system, a motor driving system and a battery system are three major core systems, and different driving operations are usually required to face different driving environments when a user actually drives the vehicle. Although the braking energy recovery energy in the prior art can convert the kinetic energy of the vehicle in the braking process into electric energy and store the electric energy into the battery, the battery may be damaged by the electric energy recovered in the braking process due to the high requirement of the battery on charging.

Disclosure of Invention

In view of the above problems, the present application provides a method, an apparatus, a vehicle and a storage medium for recovering vehicle braking energy to solve one of the above problems.

In a first aspect, an embodiment of the present application provides a vehicle braking energy recovery method, which is applied to a vehicle including a battery and a temperature control device, and includes: when a braking instruction is received, determining braking information based on the braking instruction and the current running state of the vehicle; the braking information comprises information of energy recovery requirements in the vehicle braking process; acquiring the current working temperature and the ambient temperature of the battery; and controlling the working state of the temperature control equipment according to the braking information, the current working temperature and the environmental temperature.

In a second aspect, an embodiment of the present application provides a vehicle braking energy recovery apparatus, which is applied to a vehicle including a battery and a temperature control device, and includes: and the braking information acquisition module is used for determining braking information based on the braking instruction and the current running state of the vehicle when the braking instruction is received. Wherein the braking information comprises information of an energy recovery requirement during braking of the vehicle. And the temperature acquisition module is used for acquiring the current working temperature and the ambient temperature of the battery. And the temperature control equipment control module is used for controlling the working state of the temperature control equipment according to the braking information, the current working temperature and the environment temperature.

In a third aspect, an embodiment of the present application provides a vehicle, where the vehicle includes a battery and a temperature control device, and the vehicle further includes: one or more processors; a memory; one or more application programs, wherein the one or more application programs are stored in the memory and configured to be executed by the one or more processors, the one or more programs configured to perform the steps of the vehicle braking energy recovery method described above.

In a fourth aspect, embodiments of the present application provide a computer-readable storage medium, where a computer program is stored, and the computer program, when executed by a processor, implements the steps of the above-mentioned vehicle braking energy recovery method.

Compared with the prior art, the scheme provided by the application can determine the braking information based on the braking instruction and the current running state of the vehicle, and control the working state of the temperature control equipment based on the braking information, the current working temperature of the battery and the ambient temperature, and the temperature control equipment can utilize the electric energy recovered by braking the vehicle to do work, so that the damage to the battery caused by the fact that the recovered electric energy cannot meet the charging requirement of the battery is avoided.

Furthermore, because the electric energy in the braking process can be directly used for the temperature control equipment to do work, the electric energy generated by the combination of the braking system and the energy recovery system does not need to be directly input into the battery, and the braking system, the energy recovery system and the battery can not need to meet the corresponding energy conversion technical standard so as to meet the charging requirement of the battery during braking, the technical requirements on the braking system, the energy recovery system and the battery in the vehicle are lower, meanwhile, the temperature control equipment does work by referring to the environmental temperature of the battery, so that the current working temperature of the battery after adjustment better meets the requirement of the current temperature environment, the current working temperature of the battery can still be maintained at the proper working temperature for a long time after the braking energy recovery is stopped, and the temperature control capability of the battery is greatly improved.

These and other aspects of the present application will be more readily apparent from the following description of the embodiments.

Drawings

In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings needed to be used in the description of the embodiments are briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present application, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without creative efforts.

FIG. 1 is a schematic diagram illustrating a hardware environment suitable for a vehicle braking energy recovery method provided by an embodiment of the present application.

FIG. 2 illustrates a flow diagram of a vehicle braking energy recovery method according to one embodiment of the present application.

FIG. 3 is a flowchart illustrating the step of determining whether a braking command is contacted in the method of FIG. 2.

Fig. 4 is a flow chart illustrating a step of controlling an operating state of the temperature control device in the method shown in fig. 2.

Fig. 5 shows another flow chart of the step of controlling the operating state of the temperature control device in the method shown in fig. 4.

Fig. 6 shows a further flow chart of the steps of controlling the operating state of the temperature control device in the method of fig. 5.

Fig. 7 is a further flowchart illustrating the step of controlling the operating state of the temperature control device in the method of fig. 4.

FIG. 8 is a functional block diagram of a battery management system in a vehicle braking energy recovery method according to an embodiment of the present application.

FIG. 9 is a schematic diagram of another functional framework of a battery management system in a vehicle braking energy recovery method according to an embodiment of the application.

Fig. 10 shows a functional block diagram of a vehicle braking energy recovery device according to an embodiment of the present application.

Fig. 11 shows a functional block diagram of a vehicle according to an embodiment of the present application.

Detailed Description

In order to make the technical solutions better understood by those skilled in the art, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application.

The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are some, but not all, embodiments of the present application. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.

In order to clearly explain the scheme of the present application, some terms are explained below.

A battery: means for storing electrical energy and discharging electricity on demand;

temperature control equipment: devices for controlling the temperature of the battery, such as a cooling device for lowering the temperature of the battery, a heating device for raising the temperature of the battery, and the like;

a battery management system: a system for monitoring and managing battery status;

a braking system: systems for forcibly reducing the vehicle running speed, for example for decelerating or even stopping the running vehicle, for stabilizing the vehicle speed running downhill, for keeping the stopped vehicle still;

an energy recovery system: a system for converting kinetic energy during braking of a vehicle into electrical energy.

In recent years, with the development of electric vehicle technology, the popularity of electric vehicles has gradually increased. Batteries have attracted considerable attention in the market as one of the core components in electric vehicles. Because the charging and discharging and energy storage performance of the battery are greatly related to the temperature, when the temperature of the battery is higher or lower, the charging and discharging and energy storage performance of the battery are both reduced to a large extent, and therefore, current electric vehicle manufacturers usually configure corresponding temperature control equipment for the battery so as to keep the current working temperature of the battery within an appropriate temperature range.

At present, a method for controlling a battery temperature in the prior art mainly provides electric energy for a temperature control device in a vehicle through a battery configured in the vehicle, specifically, monitors a current operating temperature of the battery in real time, and then controls an operating state of the temperature control device based on the current operating temperature of the battery. Although the method for controlling the temperature of the battery can meet the requirement of the temperature of the battery to a greater extent, the method needs to consume a large amount of electric energy, and the amount of electric energy stored in the battery is closely related to the cruising ability of the electric vehicle, so that the method can reduce the cruising ability of the vehicle, and the user experience is poor. In addition, the battery temperature and the working state of the control equipment are essentially in one-to-one correspondence, other factors influencing the battery temperature are not considered, and the control capability of the battery temperature is poor.

Further, to improve the cruising ability of the vehicle, energy is usually recovered when the vehicle is braked, the recovered energy is stored in a battery, and the battery supplies power to the temperature control device. Although the cruising ability of the vehicle can be effectively improved by storing the recovered energy in the battery, because the voltage and the current generated in the braking energy recovery process are usually not in a constant state, the recovered electric energy is input into the battery, and the electric energy input into the battery needs to meet the charging standard of the battery, therefore, the recovered energy needs to be specially converted to meet the charging standard of the battery.

In order to be able to solve the above-described problems, the present inventors continued to research and develop an effort to reduce the cost of vehicle braking energy recovery while improving the battery temperature. Further, the inventors propose a vehicle braking energy recovery method of the present application, which is applied to a vehicle including a battery and a temperature control device, the vehicle braking energy recovery method including: when a braking instruction is received, determining braking information based on the braking instruction and the current running state of the vehicle; the braking information comprises information of energy recovery requirements in the vehicle braking process; acquiring the current working temperature and the ambient temperature of the battery; and controlling the working state of the temperature control equipment according to the braking information, the current working temperature and the environment temperature. Through the implementation of this application, can confirm braking information based on braking instruction and the current driving state of vehicle, and based on braking information, the current operating temperature of battery and the operating condition of ambient temperature control equipment, temperature control equipment can do work through the electric energy that vehicle braking was retrieved, be difficult to cause the harm to the battery because of the electric energy of retrieving can not satisfy battery charging demand, the technical requirement to braking system in the vehicle, energy recuperation system and battery is lower, the ambient temperature of reference battery does work simultaneously, make the current operating temperature of battery after the adjustment accord with the demand of current temperature environment more, and not only adjust according to the temperature of battery itself, make the current operating temperature effect of temperature control equipment control battery better.

The provided vehicle braking energy recovery method implemented by the invention can be applied to a vehicle 100 shown in fig. 1, and the vehicle 100 can comprise a battery 10 and a temperature control device 20 (only one is shown in fig. 1). The battery 10 is a device for storing electric energy and discharging electricity according to a demand. For example, the battery 10 may be a lead storage battery, a lithium battery, or the like. In addition, the battery 10 may be a single battery, or may be a battery pack composed of a plurality of single cells. The temperature control device 20 may be a device for controlling the temperature of the battery 10 in the vehicle 100. Specifically, the temperature control device 20 may be used to control the current operating temperature of the battery 10 in the vehicle 100, and may also be used to control the temperature of the vehicle body in the vehicle 100. For example, the temperature control device 20 may be a heater, a radiator tank, an air conditioner, a heat exchanger, a water pump, a fan, or the like.

Referring to fig. 2, an embodiment of the present application provides a vehicle braking energy recovery method, where the vehicle braking energy recovery method may be applied to a vehicle 100, the vehicle 100 may include a battery 10 and a temperature control device 20, and the vehicle braking energy recovery method may include the following steps S11 to S14.

Step S11: when a braking instruction is received, determining braking information based on the braking instruction and the current running state of the vehicle; wherein the braking information comprises information of an energy recovery requirement during braking of the vehicle.

In the present embodiment, the braking command may be a command generated based on the manipulation state of the power control apparatus of the vehicle 100. The power control apparatus is an apparatus for controlling the driving force of the vehicle 100. For example, the power control device may be a shift mechanism, a brake pedal, an accelerator pedal, or the like. The manipulation state may be used to indicate a current control state of the power control apparatus. For example, when the power control apparatus is a shift mechanism, the manipulation state may be whether the shift mechanism receives a shift instruction and shifts gears; when the power control apparatus is a brake pedal, the manipulation state may be an angle between the brake pedal and a chassis as a reference. Note that, when the vehicle 100 is in the user's own driving, the braking instruction may be obtained according to the user's operation; when the vehicle 100 is in the autonomous driving mode, the vehicle 100 may automatically recognize the driving environment, and automatically generate a braking instruction for implementing braking of the vehicle 100 according to the driving environment. Therefore, the vehicle braking energy recovery method provided by the embodiment can be applied to a driver driving mode or an automatic driving mode, and can be set correspondingly according to an actual scene.

In the present embodiment, the current running state of the vehicle 100 is information associated with the current motion state of the vehicle. For example, the current driving state of the vehicle 100 may include at least one of a current vehicle speed of the vehicle 100, a wheel speed, a motor speed, a throttle size, and the like. In addition, the energy recovery information may be information related to energy recovery during braking of the vehicle. For example, the energy recovery information may include generated power, a voltage level, a current level, etc. of the vehicle recovering energy during braking.

In this embodiment, the braking information may be determined by the braking command and the current driving state. Specifically, the deceleration degree of the vehicle 100 may be obtained based on the braking instruction and the current running state, and then the energy recovery information during braking may be calculated based on the deceleration degree. The deceleration degree is used to indicate a degree of reduction in the speed of the vehicle 100, and may be, for example, a difference in the speed of the vehicle 100 at two points in time. It should be noted that the deceleration degree may be a degree of speed reduction of the vehicle 100 during actual braking, or may be predicted when the vehicle 100 is determining a braking command and a current driving state. When the degree of deceleration is a degree to which the speed of the vehicle 100 is reduced during actual braking, the braking information may be energy recovery information that is formed during actual braking of the vehicle 100; when it is determined that the braking command and the current driving state are predicted, the braking information may be energy recovery information predicted to be generated during braking of the vehicle 100 under the braking command and the current driving state. Generally, the greater the degree of deceleration, the more energy recovered during braking; the smaller the degree of deceleration, the less energy is recovered during braking.

Step S12: and acquiring the current working temperature and the ambient temperature of the battery.

In the present embodiment, the current operating temperature of the battery 10 may be the temperature of the battery 10 itself when the battery 10 is currently operating. The ambient temperature of the battery 10 is the temperature of the environment in which the battery 10 is currently located.

In the present embodiment, the current operating temperature and the ambient temperature of the battery 10 may be acquired by means of single-point detection. For example, a temperature detection point is set in advance on the battery 10, an environment temperature detection point is set in the environment where the battery 10 is located, and the temperature sensors (e.g., thermocouple sensor, thermistor sensor, etc.) respectively acquire the temperatures of the temperature detection point and the environment temperature detection point to obtain the current operating temperature and the environment temperature of the battery 10. The data processing amount is small in the implementation process of the single-point detection mode, and the current operating temperature and the ambient temperature of the battery 10 can be quickly obtained. The temperature detection points can be arranged inside the battery 10, and when the battery 10 is a battery pack, the temperature detection points can be arranged inside single batteries in the battery pack or on the surfaces of the single batteries in the battery pack; the environment temperature detection point may be disposed outside the battery 10, and when the battery 10 is a battery pack, the environment temperature detection point may be disposed at a position of a gap between a battery pack case for accommodating the battery pack and the battery pack, or may be disposed at the battery pack case.

In this embodiment, the current operating temperature and the ambient temperature of the battery 10 may also be obtained by means of multi-point detection. For example, a plurality of temperature detection points may be set in the battery 10 in advance, the temperature sensor obtains the temperatures of the plurality of temperature detection points, and processes the temperature data of the plurality of temperature detection points, and the method in the embodiment of the present application may obtain a more accurate current operating temperature of the battery 10 by averaging, normalizing, and performing the like on the plurality of temperature data; for another example, a plurality of environment temperature detection points may be set in advance in the environment where the battery 10 is located, the temperature sensor obtains the temperatures of the plurality of environment temperature detection points, and processes the temperature data of the plurality of environment temperature detection points, and the method according to the embodiment of the present application may obtain the more accurate environment temperature of the battery 10 by performing averaging processing, normalized mean-difference processing, and the like on the temperatures of the plurality of temperature detection points. By using the multi-point detection mode, the influence caused by special factors can be reduced, and the obtained current working temperature and the environmental temperature of the battery 10 are more accurate. The plurality of temperature detection points may be disposed inside the battery 10 in a dispersed manner, and the plurality of environmental temperature detection points may be disposed outside the battery 10 in a dispersed manner.

Step S13: and controlling the working state of the temperature control equipment according to the braking information, the current working temperature and the ambient temperature.

In the present embodiment, the power generated by the vehicle 100 during braking can be obtained from the braking information; determining a target temperature of the battery 10 according to the power, the current operating temperature, and the ambient temperature; the operating state of the temperature control device 20 is controlled based on the target temperature and the power so that the actual temperature of the battery 10 becomes the target temperature. Among them, the target temperature is a preferred temperature of the battery 10 at the current operating temperature and the ambient temperature.

In some embodiments, during braking, braking energy recovery may be performed by electric motor recovery, thermal energy recovery, hydraulic energy recovery, and the like. For example, for the vehicle 100 with the driving motor, when the vehicle 100 decelerates or brakes, the current of the rotor of the driving motor stops being supplied, and the inertial rotation of the wheel will drive the rotor to rotate to generate electric energy, so as to convert the kinetic energy of the vehicle 100 into electric energy.

In the present embodiment, an appropriate temperature zone may be set in advance for the battery 10. The target temperature is in a suitable temperature range, and the suitable temperature range can be set correspondingly according to actual conditions. The following description will be made of the control of the current operating temperature of the battery 10, taking an example of an appropriate temperature range [25 ℃,40 ℃ ]:

under the condition that the current operating temperature of the battery 10 is higher than the appropriate temperature interval: when the environmental temperature is higher than the lower limit (e.g., 25 ℃) of the suitable temperature range, controlling the temperature control device 20 to refrigerate the battery 10, so that the current working temperature of the battery 10 is reduced to the suitable temperature range, and the target temperature is within the suitable temperature range; when the environmental temperature is lower than the lower limit (e.g., 25 ℃) of the suitable temperature range, the operating state of the temperature control device 20 is controlled to raise the current operating temperature of the battery 10 to a higher temperature in the suitable temperature range, and at this time, the target temperature is a higher temperature (e.g., 30 ℃) in the suitable temperature range, wherein the current operating temperature of the battery 10 is raised because the environmental temperature of the battery 10 does not change drastically, the speed of lowering the temperature of the battery 10 itself due to the lower environmental temperature can be reduced, it is ensured that the battery 10 can be maintained to operate in the suitable temperature range for a longer time, and the operation safety of the battery can be effectively improved.

Under the condition that the current operating temperature of the battery 10 is in the appropriate temperature zone: when the environmental temperature is higher than the lower limit (e.g., 25 ℃) of the suitable temperature range, controlling the temperature control device 20 to refrigerate the battery 10, so that the current working temperature of the battery 10 is reduced to a lower temperature (e.g., 23 ℃) in the suitable temperature range, and at the moment, the target temperature is the lower temperature in the suitable temperature range, wherein the current working temperature of the battery 10 is reduced because the environmental temperature of the battery 10 does not change violently, the self-heating speed of the battery 10 due to the higher environmental temperature can be reduced, the battery 10 can be ensured to be kept working in the suitable temperature range for a longer time, and the running safety of the battery can be effectively improved; when the environmental temperature is lower than the lower limit of the suitable temperature range, the temperature control device 20 is controlled to heat the battery 10, so that the current working temperature of the battery 10 is increased to a higher temperature (for example, 30 ℃) in the suitable temperature range, and at the moment, the target temperature is the higher temperature in the suitable temperature range, wherein the current working temperature of the battery 10 is increased because the environmental temperature of the battery 10 is not changed fiercely generally, the self-cooling speed of the battery 10 due to the lower environmental temperature can be reduced, the battery 10 can be guaranteed to be maintained to work in the suitable temperature range for a long time, and the operation safety of the battery can be effectively improved.

Under the condition that the current operating temperature of the battery 10 is lower than the lower limit value of the suitable temperature interval: when the environmental temperature is higher than the lower limit (e.g., 25 ℃) of the suitable temperature range, controlling the temperature control device 10 to heat the battery 10, so that the current operating temperature of the battery 10 is increased to the suitable temperature range, where the target temperature is the temperature in the suitable temperature range; when the environmental temperature is lower than the lower limit of the suitable temperature range (e.g., 25 ℃), the temperature control device 10 is controlled to heat the battery 10, so that the current working temperature of the battery 10 is increased to a higher temperature in the suitable temperature range (e.g., 30 ℃), wherein the current working temperature of the battery 10 is increased because the environmental temperature of the battery 10 is not changed violently usually, the speed of the battery 10 reducing the temperature per se due to the lower environmental temperature can be reduced, the battery 10 can be ensured to work in the suitable temperature range for a long time, and the operation safety of the battery can be effectively improved.

It can be known from the above analysis that, in the embodiment of the present application, a characteristic that the current operating temperature of the battery 10 is affected by the ambient temperature to a certain extent is applied, the target temperature changes along with changes of the current operating temperature of the battery 10 and the ambient temperature, the operating state of the temperature control device 20 needs to change correspondingly according to the ambient temperature of the battery 10, after the braking energy recovery is stopped, the current operating temperature of the battery 10 can still be maintained in a suitable temperature range for a long time, and the temperature control effect of the battery 10 is greatly improved.

In the present embodiment, through the implementation of the above steps S11 to S13, the braking information can be determined based on the braking instruction and the current driving state of the vehicle 100, and the operating state of the temperature control device 20 can be controlled based on the braking information, the current operating temperature of the battery, and the ambient temperature, so that the temperature control device 20 can use the electric energy recovered by braking the vehicle 100 to perform work, and damage to the battery 10 due to the recovered electric energy failing to meet the charging requirement of the battery 10 can be avoided. Further, since the electric energy in the braking process can be directly used for the temperature control device 20 to apply work, the electric energy generated by the combination of the braking system and the energy recovery system does not need to be directly input into the battery 10, and the braking system, the energy recovery system and the battery 10 do not need to meet the corresponding energy conversion technical standard so as to meet the charging requirement of the battery 10 during braking, the technical requirements on the braking system, the energy recovery system and the battery 10 in the vehicle 100 are lower, and meanwhile, the temperature control device 20 applies work with reference to the environmental temperature of the battery 10, so that the current working temperature of the battery 10 after adjustment better meets the requirement of the current temperature environment, and after the braking energy recovery is stopped, the current working temperature of the battery 10 can still be maintained at the appropriate working temperature for a longer time, thereby greatly improving the temperature control capability of the battery 10.

An embodiment of the present invention further provides a vehicle braking energy recovery method, where the vehicle braking energy recovery method may be applied to a vehicle 100 shown in fig. 1, where the vehicle may include a battery 10 and a temperature control device 20, and the vehicle braking energy recovery method may include: the following steps S21 to S25. The method for recovering braking energy of a vehicle provided in this embodiment may include the same or similar steps as those in the above embodiment, and for the implementation of the same or similar steps, reference may be made to the foregoing description, and details are not repeated in this specification.

In the present embodiment, during the running of the vehicle 100, the current operating temperature of the battery 10 may be detected in real time, and it is determined whether the vehicle control state of the vehicle 100 needs to be acquired based on the current operating temperature, so as to avoid real-time determination of whether a braking instruction is received, and based on this, in order to determine whether a braking instruction is received, the current control state of the vehicle may be acquired, as shown in fig. 3, including steps S21 to S22 before determining braking information based on the braking instruction and the current running state of the vehicle.

Step S21: the current remaining capacity of the battery and the current vehicle control state of the vehicle are acquired.

In the present embodiment, the remaining amount of electricity may be represented by the electric energy of the battery 10, or may be represented by a percentage of the electric energy. The vehicle control state may include a state related to the running of the vehicle 100, among others. For example, the vehicle control state may be an operation state of each control unit (such as a handbrake, a footbrake, an accelerator, etc.) in the vehicle, and may also be a speed of the vehicle.

Step S22: and when the residual capacity is greater than or equal to the capacity threshold value, determining whether a braking instruction is received according to the vehicle control state.

In this embodiment, the charge threshold may be in the form of a percentage, for example, the charge threshold may be 100%, 95%, 90%, 85%, 80%, etc., or the charge threshold may fall within a range defined by any two of the above values. The size and data form of the power threshold are not particularly limited herein. When the remaining capacity is greater than or equal to the capacity threshold, which indicates that the current capacity of the battery 10 may not accommodate the electric energy to be recovered, determining whether a braking instruction is received according to the vehicle control state, so as to execute the subsequent actions of the method according to the braking instruction; when the remaining capacity is smaller than the capacity threshold, it indicates that the battery 10 currently has sufficient capacity to accommodate the electric energy to be recovered, and it is not necessary to determine whether a braking instruction is received, but the recovered electric energy is directly input into the battery 10 according to the real-time braking condition of the vehicle 100 when the vehicle brakes or coasts.

In the present embodiment, when it is determined that the vehicle 100 is in a state of decelerating or about to decelerate according to the vehicle control state, a control instruction issued by a control unit that controls deceleration or about to decelerate of the vehicle 100 may be taken as a braking instruction.

In some embodiments, for the continuous braking energy recovery process of the vehicle 100, the remaining power of the battery 10 may be continuously monitored, and when the remaining power of the battery 10 is smaller than the power threshold, which indicates that the power of the battery 10 is low at this time, the recovered power may be received more safely without overcharging, so the recovered power may be directly input to the battery 10; when the remaining power of the battery 10 is greater than or equal to the power threshold, it indicates that the power of the battery 10 approaches the saturation state, and then the electric energy recovered by braking is input into the battery 10 to cause the overcharge phenomenon, so that the recovered electric energy can be used for the temperature control device 20 to apply work, or a part of the recovered electric energy is used for the temperature control device 20 to apply work, and another part of the recovered electric energy is input into the battery 10. For example, the remaining capacity of the battery 10 is 95%, the electric energy recovered by the braking energy of the vehicle 100 is input to the battery 10, the capacity threshold is 98%, and when the remaining capacity of the battery 10 is 98% and the vehicle 100 is still in the braking energy recovery state, the electric energy recovered by the braking energy is used for the temperature control device 20 to do work, or a part of the recovered electric energy is used for the temperature control device 20 to do work, and another part of the recovered electric energy is input to the battery 10.

In the present embodiment, through the implementation of the above steps S21 to S22, it is determined that the vehicle control state needs to be acquired according to the vehicle power information, and then it is determined whether a braking instruction is received based on the vehicle control state, so that when the battery 10 is in a full power state or the power of the battery 10 is large, the energy recovered by the vehicle 100 in the braking process is stopped from being input to the battery 10, the battery 10 is prevented from being damaged, the performance of the battery 10 is prevented from being affected, and the requirement for temperature management of the battery 10 is met while the remaining power of the battery 10 is effectively ensured.

Step S23: when a braking instruction is received, determining braking information based on the braking instruction and the current running state of the vehicle; wherein the braking information comprises information of an energy recovery requirement during braking of the vehicle.

Step S24: and acquiring the current working temperature and the ambient temperature of the battery.

Step S25: and controlling the working state of the temperature control equipment according to the braking information, the temperature and the ambient temperature.

Further, as an embodiment of the present embodiment, during braking of the vehicle, the operating state of the temperature control device 20 may be controlled according to the power parameter, the temperature and the ambient temperature to achieve good temperature management effect of the battery 10, and based on this, as shown in fig. 4, the above step S25 may include the following steps S251 to S252.

Step S251: and determining a power parameter generated in the process of recovering the vehicle braking energy according to the braking information.

In this embodiment, the power parameter is a parameter related to power generated in the process of recovering the braking energy of the vehicle 100, and the power parameter is used to represent the magnitude of the electric energy generated in the process of recovering the braking energy of the vehicle 100, so that the corresponding electric energy can be input to the temperature control device in the subsequent process. It should be noted that the power parameter during energy recovery during braking of the vehicle 100 may vary correspondingly with the braking time and the vehicle kinetic energy.

Step S252: and controlling the working state of the temperature control equipment according to the power parameter, the temperature and the ambient temperature.

In this embodiment, when it is determined that the electric energy generated by the vehicle 100 during braking is small and the difference between the target temperature and the current operating temperature of the battery 10 is large according to the power parameter, the temperature control device 20 with high temperature control capability and low power consumption may be controlled to perform cooling or heating processing on the battery 10. When it is determined that the electric energy generated by the vehicle 100 during the braking process is large and the difference between the target temperature and the current operating temperature of the battery 10 is small according to the power parameter, the temperature control device 20 with weak temperature control capability and large power consumption may be controlled to perform cooling or heating processing on the battery 10. In this embodiment, the operating state of the temperature control device 20 may be controlled based on the difference between the target temperature and the current operating temperature of the battery 10, the power parameter, the ambient temperature, the temperature control capability of the temperature control device 20, and the power consumption, so as to adaptively select the corresponding temperature control device 20 to operate. The relationship between the current operating temperature of the battery 10, the ambient temperature, and the target temperature has already been described in step S13, and will not be described again here.

Further, as an embodiment of the present embodiment, when the recovered power is relatively large (e.g. greater than the set power threshold), the operating state of the temperature control device 20 may be controlled to prevent the battery 10 from being damaged by directly storing the recovered electric energy into the battery 10 by braking the electric energy generated during the energy recovery process of the vehicle 100, and based on this, as shown in fig. 5, the step S252 may include the following steps S2521 to S2523.

Step S2521: and determining the recovery power according to the power parameter.

In the present embodiment, the recovered power is the generated power of the vehicle 100 during the braking energy recovery process. Note that the generated power may be a fixed value or a dynamic value.

Step S2522: and if the recovered power is greater than or equal to the first recovered power threshold, determining a first target temperature of the battery according to the temperature and the ambient temperature.

In this embodiment, the first recovered power threshold may be determined based on empirical values. Specifically, when the first recovered power threshold is larger, the difference between the first target temperature and the current operating temperature of the battery 10 may be larger, and the more electric power is supplied to the temperature control device 20 at this time. Preferably, the first recovered power threshold value may be a value that satisfies the power of the temperature control device 20 at the rated power, and when the temperature control device 20 is plural, the first recovered power threshold value may be a value that satisfies the power of the plural temperature control devices 20 at the rated power at the same time.

The method for determining the first target temperature is similar to the method for determining the target temperature in step S13, and is not repeated here.

Step S2523: and controlling the working state of the temperature control equipment according to the first target temperature and the recovery power.

The temperature control device 20 operates with the recovered power, where the recovered power is an operating power of the temperature control device 20, and the temperature control device 20 operates according to the recovered power to make the current operating temperature of the battery 10 be the first target temperature. When the temperature control device 20 is plural, the recovered power is the sum of the operating powers of the plural temperature control devices 20. For example, when the first target temperature is 30 ℃, the current working temperature of the battery 10 is 28 ℃, two temperature control devices 20 are provided, which are an air-conditioning refrigeration heater and an air-conditioning heater, respectively, the recycling power is 3KW, in order to adjust the current working temperature of the battery 10 to 30 ℃, the temperature of the battery 10 needs to be raised, the air-conditioning refrigeration heater and the air-conditioning heater are controlled to heat the battery 10, respectively, the working power of the air-conditioning refrigeration heater is 2KW, the working power of the heater is 1KW, and the current working temperature of the battery 10 is 30 ℃. In addition, the recovered power can change along with the change of the braking process, so the working power of the temperature control device can also change correspondingly along with the braking process.

It should be noted that the recovered power may represent the amount of electric energy generated by the vehicle 100 at each moment in the braking process, and the electric energy generated by the vehicle 100 in the braking process may be calculated based on the recovered power generated by the vehicle 100 in the braking process, and the temperature control device 20 performs work by using the electric energy to adjust the current operating temperature of the battery 10 to the first target temperature.

In the present embodiment, the operating state of the temperature control device 20 is controlled to adjust the current operating temperature of the battery 10 to the first target temperature.

Further, as an embodiment of the present embodiment, when there are a plurality of temperature control devices 20, the plurality of temperature control devices 20 may be controlled to operate simultaneously, so as to consume the electric energy generated during the braking energy recovery process of the vehicle 100 and achieve a good temperature management effect of the battery 10, and based on this, as shown in fig. 6, the step S2523 may include the following steps S25231 to S25232.

Step S25231: and determining the working mode of at least one temperature control device according to the first target temperature and the recovery power, wherein the working mode comprises a cooling mode and a heating mode, the cooling mode is used for reducing the current working temperature of the battery 10, and the heating mode is used for increasing the current working temperature of the battery 10.

In the present embodiment, a plurality of temperature control devices 20 may be in the cooling mode or the heating mode at the same time.

Further, the step S25231 may include: and determining the working modes of at least two temperature control devices 20 according to the first target temperature and the recovery power, wherein the working mode of at least one temperature control device 20 is a cooling mode, and the working mode of at least one other temperature control device 20 is a heating mode.

In this embodiment, one or more temperature control devices 20 may be controlled to cool the battery 10 and simultaneously control another one or more temperature control devices 20 to heat the battery 10, and on the premise that the first target temperature of the battery 10 is satisfied, the cooling or heating effects among the plurality of temperature control devices 20 are cancelled, so that a large amount of electric energy recovered by the braking energy of the vehicle 100 is consumed, and the method is particularly suitable for a case where the electric energy recovered by the braking energy of the vehicle 100 is large.

Step S25232: and controlling the working state of the temperature control equipment corresponding to the working mode according to the working mode.

In this embodiment, for each temperature control device 20, a corresponding operation mode may be set, and the operation mode may include an energy level of the temperature control device 20 in addition to the cooling mode or the heating mode. That is, the operation mode may include the operation power of the temperature control devices 20 corresponding to the operation mode, thereby more effectively managing the operation states of the respective temperature control devices 20.

In this embodiment, through the implementation of the steps S25231 to S25232, the temperature control device 20 can be flexibly controlled to consume the electric energy recovered from the braking energy of the vehicle 100, so as to meet the requirements of different scenarios.

Further, as an embodiment of the present embodiment, when the required recovered power is large (e.g. greater than the set power threshold), the actual recovered energy may be limited by controlling the energy recovery ratio to avoid excessive energy recovery from damaging the battery 10, and based on this, as shown in fig. 7, the step S252 may include the following steps S2524 to S2527.

Step S2524: and determining the recovery power according to the power parameter.

In the present embodiment, the recovered power is the generated power of the vehicle 100 during the braking energy recovery process. It should be noted that the generated power may be a fixed value or a dynamic value.

Step S2525: and if the recovered power is greater than or equal to the second recovered power threshold, adjusting the energy recovery ratio in the vehicle braking process according to the recovered power.

In the present embodiment, the energy recovery ratio is a recovery ratio of electric energy generated by the vehicle 100 during braking energy recovery. For example, when the recovered power is greater than or equal to the second recovered power threshold, the recovered power is a, and the energy recovery ratio is B, the recovery ratio a × B in the actual braking energy recovery of the vehicle 100 can be obtained. It should be noted that the energy recovery ratio may be determined empirically. Preferably, the recovered power obtained by multiplying the recovered power by the energy recovery ratio can satisfy the actual operation requirements of each of the temperature control devices 20 in the vehicle 100.

Step S2526: a second target temperature of the battery is determined based on the temperature and the ambient temperature.

The method for determining the second target temperature is similar to the method for determining the target temperature in step S13, and is not repeated here.

Step S2527: and controlling the working state of the temperature control equipment according to the recovered power, the energy recovery ratio and the second target temperature.

In this embodiment, when one temperature control device 20 is operating, the recovered power obtained by multiplying the recovered power by the energy recovery ratio may be approximately equal to the operating power of the one temperature control device 20; when a plurality of temperature control devices 20 are simultaneously operated, the recovered power obtained by multiplying the recovered power by the energy recovery ratio may be approximately equal to the sum of the operating powers of the plurality of temperature control devices 20.

In the embodiment, the electric energy generated by the vehicle 100 during braking can be controlled by adjusting the energy recovery ratio, and the method is particularly suitable for a scene that the electric energy generated by the vehicle 100 during braking exceeds the sum of the electric energy required by each temperature control device 20 in the vehicle 100, so that the temperature control devices 20 are prevented from having too high working power, and the safety of the operation of the temperature control devices 20 is improved. In addition, the present embodiment may be used in combination with the above step S2521 to step S2523, so as to control the reduction of the recovered power generated during the braking energy recovery process, and then counteract the cooling and heating effects of the respective temperature control devices 20 to consume the electric energy generated by the vehicle 100 during the braking process, therefore, the present embodiment is particularly suitable for a road section with a large landslide degree and/or a long slope degree when the battery 10 in the vehicle 100 is in a full power state, and effectively prevents the battery 10 from being damaged by the electric energy generated during the braking process of the vehicle 100.

Further, as an implementation manner of this embodiment, when the vehicle 100 brakes, the kinetic energy of the vehicle 100 may be converted into electric energy by controlling the operating state of the electric motor, so as to supply the temperature control device to do work, based on which, the method for recovering vehicle braking energy may further include: and controlling the motor to stop outputting traction force, converting kinetic energy of the vehicle during inertia running into electric energy, and directly inputting the electric energy into the temperature control equipment.

In the present embodiment, the voltage and/or the current may be large for the electric energy converted from the kinetic energy of the vehicle during the inertia running, and the corresponding electric load may be provided to the temperature control device 20. In addition, when the vehicle is in a braking state, the motor stops outputting traction force while braking reverse rotation is simultaneously performed, so that kinetic energy of the vehicle 100 is converted into electric energy via the motor to function as the temperature control device 20.

In the present embodiment, since the control device 20 in the vehicle 100 can directly perform work by the electric energy converted from the kinetic energy of the vehicle during the inertia running, the electric energy loss generated during the braking process of the vehicle 100 can be effectively reduced, and the electric energy utilization efficiency can be improved.

In addition, in practical implementation of the present embodiment, it is necessary to calculate the target temperature of the battery 10, calculate the operating power of the temperature control device 20, determine the operating mode of the temperature control device 20, calculate the power parameter for recovering the braking energy of the vehicle 100, the energy recovery ratio, and the like, and this part of the content may be processed by a battery management system in the vehicle 100, may also be processed by a motor control system in the vehicle 100, and may also be processed by both the battery management system and the motor control system, which is not limited herein.

In order to more clearly understand the content of the present embodiment regarding the temperature control device 20 controlling the current operating temperature of the battery 10, the following description is made with reference to the battery management system shown in fig. 8 and fig. 9:

in the management system of the battery 10, the battery 10 and the temperature control device 20 are included, wherein the temperature control device 20 includes an air-conditioning refrigeration and heating device 21, a heat exchanger 22, a water pump 23, a heater 24, a reversing valve 25, a heat dissipation water tank 26, a fan 27 and a liquid storage tank 28, the heat exchanger 22, the water pump 23, the heater 24, the reversing valve 25, the heat dissipation water tank 26 and the battery 10 are connected through a pipeline through which liquid flows, the air-conditioning refrigeration and heating device 21 can cool or heat the liquid flowing through the heat exchanger 22, and the fan 27 can make the air flow rate of the heat dissipation water tank 26 faster. Specifically, when in the temperature raising mode of the battery 10, the air-conditioning refrigeration and heating device 21 can raise the temperature of the liquid flowing through the heat exchanger 22, the water pump 23 is used as a power source for the liquid flowing in the pipeline, the heater 24 heats the water in the pipeline, meanwhile, the liquid flowing to the radiating water tank 26 is controlled by the reversing valve 25 to be stopped (as shown in fig. 8), and the heated liquid flows through the battery 10, so that the current working temperature of the battery 10 is raised; the current operating temperature of the battery 10 can be controlled to increase by adjusting the operating power of the heater 24 and/or the air-conditioning cooling and heating device 21, and the heater 24 and the air-conditioning cooling and heating device 21 can be used simultaneously or alternatively. When the battery 10 is in the cooling mode, the air-conditioning refrigeration and heating device 21 can cool the liquid flowing through the heat exchanger 22, the water pump 23 is used as a power source for the liquid flowing in the pipeline, the heater 24 can not heat the water in the pipeline, meanwhile, the liquid flowing to the direction of the heat dissipation water tank 26 is controlled to be conducted through the reversing valve 25, the fan 27 is controlled to be started to enable the air flow rate of the heat dissipation water tank 26 to be faster (as shown in fig. 9), the water in the pipeline is cooled, and the cooled liquid flows through the battery 10 to enable the current working temperature of the battery 10 to be reduced; the current operating temperature of the battery 10 can be controlled by adjusting the operating power of the heater 24 and/or the fan 27, and the heater 24 and the air-conditioning cooling and heating device 21 can be used simultaneously or alternatively. It should be noted that the above-mentioned cooling mode of battery 10 and the above-mentioned heating mode of battery 10 can be performed simultaneously, so that the corresponding effects of the cooling mode of battery 10 and the heating mode of battery 10 are partially cancelled out, so as to achieve a large consumption of recovered electric energy.

In this embodiment, the braking information may be determined based on the braking instruction and the current driving state of the vehicle 100, and the operating state of the temperature control device 20 may be controlled based on the braking information, the current operating temperature of the battery, and the ambient temperature, and the temperature control device 20 may use the electric energy recovered by braking the vehicle 100 to do work, so as to avoid damage to the battery 10 due to the recovered electric energy failing to meet the charging requirement of the battery 10. Furthermore, since the electric energy in the braking process can be directly used for the temperature control device 20 to apply work, the electric energy generated by the combination of the braking system and the energy recovery system does not need to be directly input into the battery 10, and the braking system, the energy recovery system and the battery 10 do not need to meet the corresponding energy conversion technical standard so as to meet the charging requirement of the battery 10 during braking, the technical requirements on the braking system, the energy recovery system and the battery 10 in the vehicle 100 are lower, and meanwhile, the temperature control device 20 applies work with reference to the environmental temperature of the battery 10, so that the current working temperature of the battery 10 after adjustment better meets the requirement of the current temperature environment, and after the braking energy recovery is stopped, the current working temperature of the battery 10 can still be maintained at the appropriate working temperature for a longer time, thereby greatly improving the temperature control capability of the battery 10; whether a braking instruction is received can be determined based on the electric quantity information of the vehicle and the control state of the vehicle, so that when the battery 10 is in a full-electric state or the electric quantity of the battery 10 is large, the input of energy recovered by the vehicle 100 in the braking process to the battery 10 is stopped, and the battery 10 is prevented from being damaged and the performance of the battery 10 is prevented from being influenced; one or more temperature control devices 20 can also be controlled to refrigerate the battery 10, and at the same time, another one or more temperature control devices 20 are controlled to heat the battery 10, so that on the premise of meeting the first target temperature of the battery 10, the refrigeration or heating effects among the temperature control devices 20 are counteracted, a large amount of electric energy recovered by the braking energy of the vehicle 100 is consumed, and the method is particularly suitable for the condition that the electric energy recovered by the braking energy of the vehicle 100 is large; the electric energy generated by the vehicle 100 in the braking process can be controlled by adjusting the energy recovery ratio, and the method is particularly suitable for a scene that the electric energy generated by the vehicle 100 in the braking process exceeds the sum of the electric energy required by each temperature control device 20 in the vehicle 100, so that the temperature control devices 20 are prevented from generating overlarge working power, and the running safety of the temperature control devices 20 is improved.

Referring to fig. 10, a structural block diagram of a vehicle braking energy recovery apparatus provided in an embodiment of the present application is shown, where the vehicle braking energy recovery apparatus is applied to a vehicle including a battery and a temperature control device, and the vehicle braking energy recovery apparatus may include a braking information acquisition module 51, a temperature acquisition module 52, and a temperature control device control module 53. The detailed description of each functional module is as follows: the braking information acquisition module 51 is used for determining braking information based on the braking instruction and the current running state of the vehicle when the braking instruction is received; wherein the braking information comprises information of an energy recovery requirement during braking of the vehicle. And a temperature obtaining module 52 for obtaining the current operating temperature and the ambient temperature of the battery. And the temperature control device control module 53 is used for controlling the working state of the temperature control device according to the braking information, the temperature and the ambient temperature.

Further, as an implementation manner of this embodiment, the vehicle braking energy recovery apparatus may further include a vehicle information obtaining module and a braking instruction receiving module. The functional units are explained in detail as follows: and the vehicle information acquisition module is used for acquiring the current residual capacity of the battery and the current vehicle control state of the vehicle. And the braking instruction receiving module is used for determining whether a braking instruction is received or not according to the vehicle control state when the residual electric quantity is greater than or equal to the electric quantity threshold value.

Further, as an implementation manner of the present embodiment, the temperature control device control module 53 may include a power parameter acquisition unit and a temperature control device control unit. The functional units are explained in detail as follows: and the power parameter acquisition unit is used for determining the power parameters generated in the vehicle braking energy recovery process according to the braking information. And the temperature control equipment control unit is used for controlling the working state of the temperature control equipment according to the power parameter, the temperature and the ambient temperature.

Further, as an implementation manner of this embodiment, the temperature control device control unit may include a first recovery power acquiring sub-unit, a first target temperature acquiring sub-unit, and a first temperature control device control sub-unit. The functional subunits are described in detail as follows: and the first recovery power acquisition subunit is used for determining the recovery power according to the power parameter. And the first target temperature acquisition subunit is used for determining a first target temperature of the battery according to the temperature and the ambient temperature if the recovered power is greater than or equal to the first recovered power threshold. And the first temperature control equipment control subunit is used for controlling the working state of the temperature control equipment according to the first target temperature and the recovery power.

Further, as an implementation manner of this embodiment, there are a plurality of temperature control devices; the temperature control device control subunit may include an operation mode determination component and a temperature control device control component. The components are described in detail as follows: and the working mode determining component is used for determining the working mode of at least one temperature control device according to the first target temperature and the recovery power, the working mode comprises a refrigerating mode and a heating mode, the refrigerating mode is used for reducing the current working temperature of the battery, and the heating mode is used for increasing the current working temperature of the battery. And the temperature control equipment control assembly is used for controlling the working state of the temperature control equipment corresponding to the working mode according to the working mode.

Further, as an implementation manner of the present embodiment, the operation mode determination component may include an operation mode determination subcomponent. The operating mode determining subassembly is detailed as follows: and the working mode determining subassembly is used for determining the working modes of at least two temperature control devices according to the first target temperature and the recovery power, wherein the working mode of at least one temperature control device is a cooling mode, and the working mode of at least one other temperature control device is a heating mode.

Further, as an implementation manner of this embodiment, the temperature control device control unit may include a second recovered power obtaining sub-unit, an energy recovery ratio adjusting sub-unit, a second target temperature determining sub-unit, and a second temperature control device control sub-unit. The functional subunits are described in detail as follows: and the second recovered power obtaining subunit is used for determining the recovered power according to the power parameter. And the energy recovery ratio adjusting subunit is used for adjusting the energy recovery ratio in the vehicle braking process according to the recovered power if the recovered power is greater than or equal to the second recovered power threshold. And a second target temperature determination subunit for determining a second target temperature of the battery based on the temperature and the ambient temperature. And the second temperature control equipment control subunit is used for controlling the working state of the temperature control equipment according to the recovery power, the energy recovery ratio and the second target temperature.

Further, as an implementation manner of the embodiment, the vehicle braking energy recovery device may further include an electric energy delivery module. The detailed description of the power delivery module is as follows: and the electric energy transmission module is used for controlling the motor to stop outputting traction force, converting kinetic energy of the vehicle during inertia running into electric energy, and directly inputting the electric energy into the temperature control equipment.

It can be clearly understood by those skilled in the art that, for convenience and brevity of description, the specific working processes of each module in the above-described apparatus may refer to the corresponding processes in the foregoing method embodiments, and are not described herein again.

In the several embodiments provided in the present application, the coupling or direct coupling or communication connection between the modules shown or discussed may be through some interfaces, and the indirect coupling or communication connection between the devices or modules may be in an electrical, mechanical or other form.

In addition, functional modules in the embodiments of the present application may be integrated into one processing module, or each module may exist alone physically, or two or more modules are integrated into one module. The integrated module can be realized in a hardware mode, and can also be realized in a software functional module mode.

Referring to fig. 11, a vehicle according to an embodiment of the present application is shown, where the vehicle includes a battery 10 and a temperature control device 20; the vehicle also includes a processor 810, a communication module 820, a memory 830, and a bus. The processor 810, the communication module 820, the memory 830, the battery 10 and the temperature control device 20 are connected to each other through a bus and perform communication with each other. The bus may be an ISA bus, PCI bus, EISA bus, CAN bus, or the like. The bus may be divided into an address bus, a data bus, a control bus, etc. Wherein:

the memory 830 stores programs. In particular, the memory 830 may be used to store software programs as well as various data. The memory 830 may mainly include a program storage area and a data storage area, wherein the program storage area may store an application program required to operate at least one function and may include program codes including computer operating instructions. In addition to storing programs, the memory 830 may also temporarily store messages or the like that the communication module 820 needs to send. The memory 830 may include a high-speed RAM memory, and may further include a non-volatile memory (non-volatile memory), such as at least one Solid State Disk (SSD).

The processor 810 is configured to execute programs stored in the memory 830. The program is executed by a processor to implement the steps of the vehicle braking energy recovery method of each of the above embodiments.

The embodiment of the present application further provides a computer-readable storage medium, where a computer program is stored on the computer-readable storage medium, and when the computer program is executed by a processor, the computer program implements each process of the above-mentioned method for controlling an intelligent device based on permissions, and can achieve the same technical effect, and in order to avoid repetition, the details are not repeated here. The computer-readable storage medium may be a Read-Only Memory (ROM), a Random Access Memory (RAM), an SSD, an Electrically Erasable Programmable Read-Only Memory (EEPROM), or a Flash Memory (Flash Memory).

It should be noted that, in this document, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising an … …" does not exclude the presence of other like elements in a process, method, article, or apparatus that comprises the element.

Through the above description of the embodiments, those skilled in the art will clearly understand that the method of the above embodiments can be implemented by software plus a necessary general hardware platform, and certainly can also be implemented by hardware, but in many cases, the former is a better implementation manner. Based on such understanding, the technical solutions of the present application may be embodied in the form of a software product, which is stored in a storage medium (such as ROM/RAM, SSD, Flash), and includes several instructions for enabling a terminal (such as a mobile phone, a computer, a server, an air conditioner, or a network device) to execute the methods of the embodiments of the present application.

While the present embodiments have been described with reference to the accompanying drawings, it is to be understood that the invention is not limited to the precise embodiments described above, which are meant to be illustrative and not restrictive, and that various changes may be made therein by those skilled in the art without departing from the spirit and scope of the invention as defined by the appended claims.

Claims

1. A vehicle braking energy recovery method is characterized by being applied to a vehicle comprising a battery and a temperature control device, and the method comprises the following steps:

when a braking instruction is received, determining braking information based on the braking instruction and the current running state of the vehicle; wherein the braking information comprises information of energy recovery requirements during braking of the vehicle;

acquiring the current working temperature and the ambient temperature of the battery;

determining a power parameter generated in the vehicle braking energy recovery process according to the braking information;

determining the recovery power according to the power parameter;

if the recovered power is larger than or equal to the recovered power threshold, adjusting the energy recovery ratio in the vehicle braking process according to the recovered power;

determining a target temperature of the battery according to the current working temperature and the ambient temperature; and

and controlling the working state of the temperature control device according to the product of the recovered power and the energy recovery proportion and the target temperature, wherein the recovered power obtained by the product of the recovered power and the energy recovery proportion is equal to the working power of the temperature control device in the vehicle.

2. The method of claim 1, wherein the step of determining braking information based on the braking command and a current driving state of the vehicle upon receiving the braking command is preceded by the method further comprising:

acquiring the current residual capacity of the battery and the vehicle control state of the vehicle; and

and when the residual electric quantity is greater than or equal to an electric quantity threshold value, determining whether a braking instruction is received according to the vehicle control state.

3. A vehicle braking energy recovery device, characterized in that, applied to a vehicle comprising a battery and a temperature control device, the device comprises:

the braking information acquisition module is used for determining braking information based on the braking instruction and the current running state of the vehicle when the braking instruction is received; wherein the braking information comprises information of energy recovery requirements during braking of the vehicle;

the temperature acquisition module is used for acquiring the current working temperature and the ambient temperature of the battery;

the power parameter acquisition unit is used for determining power parameters generated in the vehicle braking energy recovery process according to the braking information;

the recovery power obtaining subunit is used for determining recovery power according to the power parameter;

the energy recovery ratio adjusting subunit is used for adjusting the energy recovery ratio in the vehicle braking process according to the recovered power if the recovered power is greater than or equal to a recovered power threshold;

the target temperature determining subunit is used for determining the target temperature of the battery according to the current working temperature and the environment temperature; and

and the temperature control device control subunit is used for controlling the working state of the temperature control device according to the product of the recovered power and the energy recovery proportion and the target temperature, wherein the recovered power obtained by the product of the recovered power and the energy recovery proportion is equal to the working power of the temperature control device in the vehicle.

4. A vehicle, characterized by comprising a battery and a temperature control device; the vehicle further includes:

a memory;

one or more processors coupled with the memory;

one or more programs, wherein the one or more application programs are stored in the memory and configured to be executed by the one or more processors, the one or more programs configured to perform the method of any of claims 1-2.

5. A computer-readable storage medium, having stored thereon program code that can be invoked by a processor to perform the method according to any one of claims 1-2.