CN114670712A

CN114670712A - Temperature control method, vehicle, and storage medium

Info

Publication number: CN114670712A
Application number: CN202210302250.5A
Authority: CN
Inventors: 双婧雯; 张坤; 程诚; 许心一; 朱玲
Original assignee: Dongfeng Motor Corp
Current assignee: Dongfeng Motor Corp
Priority date: 2022-03-24
Filing date: 2022-03-24
Publication date: 2022-06-28

Abstract

The embodiment of the application discloses a temperature control method, a vehicle and a storage medium, comprising the following steps: acquiring a first working temperature T1 of the battery; determining whether the battery can be started based on the first operating temperature T1; if the battery cannot be started, starting the engine to drive the generator to operate; the generator charges a battery, and the generator supplies power to a plurality of heating elements of a hybrid vehicle to raise the temperatures of a driving motor, the generator, the engine, and the battery. The temperature control method, the vehicle and the storage medium can realize heat preservation and heating of the driving motor, the generator, the engine and the battery in a low-temperature environment, improve working performance and efficiency and keep the driving consistency of the whole vehicle.

Description

Temperature control method, vehicle, and storage medium

Technical Field

The application relates to the field of thermal management of power batteries, in particular to a temperature control method, a vehicle and a storage medium.

Background

At present, hybrid vehicles are rapidly developed, have the advantages of electric vehicles and fuel vehicles, have the advantages of low oil consumption, low emission, low pollution, low noise and the like, and are widely concerned. The battery of the hybrid electric vehicle supplies power to the driving motor to provide power, but due to the characteristics of the battery, the charging and discharging power of the battery is severely limited in a low-temperature environment (such as winter in northeast and other regions), so that the working state of the whole vehicle is greatly influenced, and the driving experience of the hybrid electric vehicle in the low-temperature environment is very poor. In addition, working under unfavorable ambient temperature, the driving motor, the generator and the engine of the hybrid power system can be driven after being preheated for a period of time, otherwise, the working performance, the efficiency and the service life are all reduced.

Disclosure of Invention

In view of the above, it is desirable to provide a temperature control method, a vehicle and a storage medium to improve the temperature control problem.

In order to achieve the above purpose, the technical solution of the embodiment of the present application is implemented as follows:

a temperature control method is applied to a hybrid vehicle and comprises the following steps:

acquiring a first working temperature T1 of the battery;

determining whether the battery can be started based on the first operating temperature T1;

if the battery cannot be started, starting the engine to drive the generator to operate; the generator charges a battery, and the generator supplies power to a plurality of heating elements of a hybrid vehicle to raise the temperatures of a driving motor, the generator, the engine, and the battery.

Further, the step of determining whether the battery can be started based on the first operating temperature T1 includes:

the battery can be started, and then the battery is controlled to supply power to the heating element so as to raise the temperature of the driving motor, the generator, the engine and the battery.

Further, the step of determining whether the battery can be started based on the first operating temperature T1 specifically includes:

when the first working temperature T1 is lower than a first preset temperature threshold M1, the battery is judged to be incapable of being started;

when the first operating temperature T1 is within the range of a first preset temperature threshold M1, it is determined that the battery can be started.

Further, the temperature control method further includes:

acquiring a first monitored temperature t1 on a heating element corresponding to the battery;

controlling the temperature of the battery based on the first operating temperature T1, the first monitored temperature T1, and a first preset temperature threshold M1.

Further, the step of controlling the temperature of the battery based on the first operating temperature T1, the first monitored temperature T1 and the first preset temperature threshold M1 specifically includes:

if the temperature difference S1 between the first working temperature T1 and the first monitoring temperature T1 is larger than a first preset value, reporting a temperature difference fault;

if the temperature difference S1 between the first operating temperature T1 and the first monitored temperature T1 is smaller than a first predetermined value, and the first operating temperature T1 is lower than a first preset temperature threshold M1, increasing the heating power of the heating element corresponding to the battery;

if the temperature difference S1 between the first operating temperature T1 and the first monitored temperature T1 is smaller than a first predetermined value, and the first operating temperature T1 is within a range of a first preset temperature threshold M1, reducing the heating power of the heating element corresponding to the battery;

and if the temperature difference S1 between the first working temperature T1 and the first monitoring temperature T1 is smaller than a first preset value and the first working temperature T1 is higher than a first preset temperature threshold M1, controlling the heating element corresponding to the battery to stop heating.

Further, the temperature control method further includes:

acquiring the working temperature of a working component, wherein the working component is one of the driving motor, the generator and the engine;

acquiring a monitored temperature on a heating element corresponding to the working component;

controlling the temperature of the working component based on the operating temperature, the monitored temperature, and a preset temperature threshold corresponding to the working component.

Further, the step of controlling the temperature of the working component based on the working temperature, the monitored temperature, and a preset temperature threshold corresponding to the working component specifically includes:

if the temperature difference between the working temperature and the monitored temperature corresponding to the working component is larger than a preset value, reporting a temperature difference fault;

if the temperature difference between the working temperature corresponding to the working part and the monitored temperature is smaller than a preset value and the working temperature corresponding to the working part is lower than the range of a preset temperature threshold corresponding to the working part, increasing the heating power of the heating element corresponding to the working part;

if the temperature difference between the working temperature corresponding to the working part and the monitored temperature is smaller than a preset value, and the working temperature corresponding to the working part is in the range of a preset temperature threshold corresponding to the working part, reducing the heating power of a heating element corresponding to the working part;

and if the temperature difference between the working temperature corresponding to the working part and the monitored temperature is less than a preset value and the working temperature corresponding to the working part is higher than a preset temperature threshold corresponding to the working part, stopping heating the heating part corresponding to the working part.

Further, the heating element is a heating cover assembly composed of a plurality of heating covers;

the generator supplies power to the heating member in order to promote driving motor, the generator, the engine and the temperature of battery specifically includes:

raising the temperature of the driving motor corresponding to the heating member of the driving motor;

raising the temperature of the generator in response to the heating element of the generator;

raising the temperature of the engine in response to the heating element of the engine;

the heating member corresponding to the battery raises the temperature of the battery.

A vehicle comprises a vehicle control unit, a storage medium and a heating program of a hybrid vehicle, wherein the heating program is stored on the storage medium and can be operated on the vehicle control unit, and the heating program is executed by the vehicle control unit to realize the temperature control method.

A storage medium having stored thereon a heating program capable of implementing the above temperature control method.

According to the temperature control method, the vehicle and the storage medium of the embodiment of the application, the first working temperature of the battery is obtained; determining whether the battery can be started based on the first working temperature; when the battery can not be started, the engine is started to drive the generator to operate; the generator charges the battery, and supplies power to the heating element to raise the temperature of the driving motor, the generator, the engine and the battery; under the condition that the battery is in a low-temperature environment and is difficult to start, the battery is charged to generate heat and the generator supplies power to the heating element so as to provide heat for the battery, so that the battery can quickly reach an ideal working temperature value in the low-temperature environment; and through embolia the heating member on driving motor, generator and the engine, realize the holistic heat preservation heating of hybrid power system under the low temperature environment, guarantee that driving motor, generator, engine and battery all can be in suitable temperature range and carry out work under the low temperature environment to optimize respective performance, raise the efficiency, and then holistic improvement vehicle's hybrid power system's working property and efficiency for the rate of heating keeps the uniformity of whole car driveability.

Drawings

Fig. 1 is a schematic diagram illustrating connection relationships among a battery, an engine, a generator, a driving motor, and a heating member, which are involved in a heating control method according to an embodiment of the present application;

fig. 2 is a schematic structural diagram of a hardware device involved in a heating control method according to an embodiment of the present application;

FIG. 3 is a schematic flow chart of a first embodiment of a temperature control method of the present application;

FIG. 4 is a schematic flow chart of a second embodiment of the temperature control method of the present application;

FIG. 5 is a schematic flow chart of a third embodiment of the temperature control method of the present application;

FIG. 6 is a schematic flow chart of a fourth embodiment of the temperature control method of the present application;

FIG. 7 is a schematic flow chart of a fifth embodiment of the temperature control method of the present application;

FIG. 8 is a schematic flow chart of a sixth embodiment of a temperature control method of the present application;

fig. 9 is a schematic flowchart of a seventh embodiment of the temperature control method of the present application.

Detailed Description

It should be noted that, in the case of conflict, the technical features in the examples and examples of the present application may be combined with each other, and the detailed description in the specific embodiments should be interpreted as an explanation of the present application and should not be construed as an improper limitation of the present application.

In the description of the embodiments of the present application, the "up", "down", "left", "right", "front", "back" orientation or positional relationship is based on the orientation or positional relationship shown in fig. 1, it is to be understood that these orientation terms are merely for convenience of description and simplicity of description, and do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore, should not be considered as limiting the present application.

The vehicle energy source of the embodiment of the present application is a new energy vehicle, and a hybrid vehicle is explained here.

As shown in fig. 1 and 2, the vehicle may include a battery 1, an engine 2, a generator 3, a driving motor 4, a heating member 5, a vehicle control unit 6, a first temperature collection unit 11 disposed on the battery 1, a second temperature collection unit 21 disposed on the engine 2, a third temperature collection unit 31 disposed on the generator 3, a fourth temperature collection unit 41 disposed on the driving motor 4, and a storage medium (not shown).

It will be understood that the configurations shown in fig. 1 and 2 do not constitute structural limitations of a hybrid vehicle, and may include more or fewer components than those shown, certain components combined with each other, and certain different orientations arranged; such as certain drive shafts, wheels, and their conventional arrangement drive means that are necessarily present in a vehicle.

The heating member 5 may be one, and in the embodiments of the present application, the heating member 5 may also be a heating cover assembly constituted by a plurality of heating covers; each heating member 5 individually corresponds to the battery 1, the engine 2, the generator 3, and the drive motor 4, and the heating member 5 corresponding to the drive motor 4 raises the temperature of the drive motor 4 of the hybrid vehicle; the temperature of the generator 3 is raised corresponding to the heating element 5 of the generator 3; raising the temperature of the engine 2 in correspondence with the heating element 5 of the engine 2; the heating member 5 corresponding to the battery 1 raises the temperature of the battery 1. Wherein, a first heating cover 51 corresponding to the battery 1, a second heating cover 52 corresponding to the engine 2, a third heating cover 53 corresponding to the generator 3 and a fourth heating cover 54 corresponding to the driving motor 4 are arranged; supplying power to the heating members 5 (the first heating cover 51, the second heating cover 52, the third heating cover 53, and the fourth heating cover 54) can generate heat to correspondingly raise the temperature of the battery 1, the engine 2, the generator 3, and the driving motor 4; the heating element 5 can be a resistance wire, and directly converts the electric energy provided by the battery 1 or the generator 3 into the electric energy; the heating element 5 can also be an air source heat pump system, and the electric energy provided by the battery 1 or the generator 3 can do work to realize heat transfer. A temperature sensor may be disposed on each of the heating members 5 to correspondingly detect the temperatures of the battery 1, the engine 2, the generator 3, and the drive motor 4.

The power supply of the battery 1 to the driving motor 4 can drive the driving motor 4 to operate to provide the vehicle with the traveling power, that is, the output shaft of the driving motor 4 can directly or indirectly drive the driving shaft of the vehicle to realize the forward and backward movement. In addition, the battery 1 can also supply power to the heating member 5 to generate heat to correspondingly raise the temperature of the battery 1, the engine 2, the generator 3 and the driving motor 4. The engine 2 may be a conventional fuel-powered engine, and the output shaft of the engine 2 can directly or indirectly drive the drive shaft of the vehicle to achieve forward and reverse motion by fuel injection combustion to generate power. In a hybrid vehicle, the output shaft of the driving motor 4 can directly drive the driving shaft of the vehicle, and the engine 2 can drive the driving motor 4 to operate to provide traveling power, namely, the output shaft of the engine 2 is connected with the output shaft of the driving motor 4; in the case that the battery 1 can supply power to the driving motor 4, the driving motor 4 is operated to provide the vehicle with the traveling power, and in the case that the battery 1 cannot supply power to the driving motor 4, the engine 2 drives the driving motor 4 to rotate by fuel injection combustion, thereby providing the vehicle with the traveling power. In addition, the engine 2 rotates an output shaft through fuel injection combustion, and the output shaft can drive the generator 3 to operate to generate electricity. The electric power generated by the generator 3 can be supplied to the battery 1 for charging on the one hand and also directly to the heating element 5 for generating heat on the other hand.

The storage medium stores a heating program capable of implementing the temperature control method according to the embodiment of the present application.

The vehicle control unit 6 is used for executing a heating program stored on a storage medium; specifically, the vehicle control unit 6 can receive temperature sampling data from the first temperature acquisition unit 11, the second temperature acquisition unit 21, the third temperature acquisition unit 31, the fourth temperature acquisition unit 41 and the temperature sensors on the heating element 5; analyzing the sampled data and executing according to a heating program preset on a storage medium to realize a preset temperature control method; thereby carry out temperature control to each part for each part of hybrid vehicle can carry out work to suitable operating temperature within range by rapid heating up under low temperature environment, thereby effectively promote working property, work efficiency and increase of service life etc.. The components referred to herein include, but are not limited to, a battery 1, an engine 2, a generator 3, and a drive motor 4.

Fig. 3 is a flowchart illustrating a temperature control method according to a first embodiment of the present application, and referring to fig. 1 to 3, a vehicle control unit 6 executes a heating program stored on a storage medium to implement a temperature control method of a hybrid vehicle, the temperature control method including:

s10, a first operating temperature T1 of the battery 1 is acquired.

Here, the hybrid vehicle may be provided with a first temperature acquisition unit 11 capable of detecting the temperature of the battery 1. Specifically, the first temperature collection unit 11 may be a heat-sensitive sensor, a pressure-sensitive sensor, or an infrared sensor; the vehicle control unit 6 converts signals such as voltage, current or magnetic field transmitted by the first temperature acquisition unit 11 into corresponding temperature data; or the first temperature acquisition unit 11 may directly convert signals that may reflect the battery temperature, such as a thermocouple, an infrared imaging, and a fiber grating, into corresponding temperature data, and then transmit the temperature data to the vehicle control unit 6. In addition, the first temperature acquisition unit 11 may also be a thermometer, and directly transmits the temperature data of the battery 1 to the vehicle control unit 6.

Based on the above steps, the vehicle control unit 6 obtains the first operating temperature T1 of the battery 1 of the vehicle through the first temperature acquisition unit 11.

It should be understood that, in the embodiments of the present application, the battery 1 may be a power battery pack formed by combining a plurality of battery cells. The step of obtaining the first operating temperature T1 of the battery 1 may specifically include: the temperature of each battery cell of the power battery pack is acquired, and the lowest temperature value of the temperatures of all the battery cells is taken as the temperature of the battery 1.

S20, it is determined whether the battery 1 can be started based on the first operating temperature T1.

The vehicle control unit 6 judges the battery 1 according to a preset heating program based on a first working temperature T1, the judgment standard may be whether the first working temperature T1 reaches a preset target temperature, the target temperature should be greater than or equal to the lowest temperature at which the charging and discharging of the battery 1 cannot affect the health degree of the battery 1, the numerical setting of the target temperature may be obtained by evaluating the performance of the battery 1 in different environments obtained based on repeated experiments, or may be obtained by theoretical calculation according to the chemical properties of the material of the battery 1; the criterion for determination may be a high-low relationship between the first operating temperature T1 and the outside ambient temperature.

It should be understood that, in the embodiments of the present application, the determination that the battery 1 cannot be started does not mean that the battery 1 is completely damaged and cannot start discharging, but means that the battery 1 starts discharging at a temperature unsuitable for discharging, and the voltage drop, the discharging efficiency is low, and the charging structure of the battery 1 changes irreversibly.

S30, if the battery 1 can not be started, the engine 2 is started to drive the generator 3 to operate; the generator 3 charges the battery 1, and the generator 3 supplies power to the heating member 5 to raise the temperature of the driving motor 4, the generator 3, the engine 2, and the battery 1.

Here, when the vehicle control unit 6 determines that the battery 1 cannot be started based on the first operating temperature T1, the engine 2 of the vehicle is started to drive the generator 3, and the engine 2 drives the generator 3 to operate in the fuel injection combustion state, thereby converting mechanical energy into electrical energy.

On one hand, the electric quantity generated by the generator 3 is transmitted to the battery 1 through the circuit for charging, the battery 1 generates heat in the charging process, and the working temperature of the battery 1 is raised through the heat; on the other hand, the amount of electricity generated by the generator 3 is distributed to the heating members 5 through the electric circuit, and heat is supplied from the heating members 5 to the corresponding drive motor 4, generator 3, engine 2, and battery 1.

Through the heat that the battery 1 itself generates heat and heating member 5 provided to battery 1 charges, impel battery 1 to reach ideal operating temperature value under low temperature environment fast, and then ensure that the charge-discharge power of battery 1 is in the optimum scope, optimize the performance of battery 1, prolong the life of battery 1.

It should be understood that, when the vehicle is operated in a low-temperature environment, besides the battery 1, other operating components, such as the driving motor 4, the generator 3 and the engine 2, may also be limited to different degrees, for example, when the driving motor 4 is at an excessively low temperature, the magnetic drop may cause too small torque and insufficient power during starting, and when the generator 3 is at an excessively low temperature, the magnetic drop and the reduction of power generation efficiency may occur; the engine 2 is started at an excessively low temperature, and due to the fact that fuel oil in the cavity is combusted, the temperature of the inner surface of the cavity is high, the temperature of the outermost side of the cavity is low, the temperature difference between cold and hot is excessively large, metal fatigue, service life reduction and the like are easily caused. All embolia heating member 5 on battery 1, driving motor 4, generator 3 and engine 2 and can realize holistic heat preservation heating effect, play 1+1+1>4 effect, make heating member 5 provide heat to corresponding driving motor 4, generator 3 and engine 2, ensure that driving motor 4, generator 3 and engine 2 can be in suitable temperature range and carry out work under the low temperature environment, thereby optimize respective performance, raise the efficiency.

In the embodiment of the application, under the condition that battery 1 can not be started, engine 2 drives generator 3 to operate, and supply power to heating member 5, make heating member 5 can provide heat to driving motor 4, generator 3 and engine 2, make more than battery 1 can reach ideal operating temperature value fast, and increase the heat preservation effect to other important working parts of vehicle, for example driving motor 4, generator 3 and engine 2 can be under low temperature environment, adjust the temperature rapidly to suitable scope in order to work, prolong battery 1, driving motor 4, the life of generator 3 and engine 2, thereby improve the working property and the efficiency of the hybrid power system of vehicle, accelerate heating rate, keep the uniformity of whole car drivability.

The hybrid system of each embodiment of the present application includes a battery 1, a drive motor 4, a generator 3, and an engine 2.

One possible embodiment, as shown in fig. 1 to 4, is that the hybrid vehicle controller 6 executes a heating program stored on a storage medium to implement a temperature control method of a hybrid vehicle, which includes:

s10, a first operating temperature T1 of the battery 1 is acquired.

S20, it is determined whether the battery 1 can be started based on the first operating temperature T1. Here, when the vehicle control unit 6 determines that the battery 1 cannot be started based on the first operating temperature T1, it jumps to S30; when the vehicle control unit 6 determines that the battery 1 can be started based on the first operating temperature T1, it jumps to S40.

S40, the battery 1 can be started, the battery 1 is controlled to supply power to the heating member 5 to raise the temperature of the driving motor 4, the generator 3, the engine 2 and the battery 1.

Specifically, a temperature value may be preset, which may be a fixed value set artificially, and is usually set to-10 °, 0 °, 5 °, or 10 ° in consideration of the charge/discharge performance of the battery 1, the ambient temperature, and the like, that is, in order to avoid performance degradation of the battery 1 caused by the start of the battery 1 at an excessively low temperature. The vehicle control unit 6 acquires a first working temperature T1 of the battery 1 of the hybrid vehicle through the first temperature acquisition unit 11; a target temperature T0 may be preset, and the vehicle control unit 6 compares the obtained first operating temperature T1 of the battery 1 with the target temperature T0.

When T1 is less than T0, the vehicle control unit 6 judges that the battery 1 cannot be normally started, the vehicle control unit 6 executes S30, the engine 2 of the vehicle is started to drive the generator 3, the engine 2 drives the generator 3 to operate in an oil injection combustion state, and mechanical energy is converted into electric energy; the electric quantity generated by the generator 3 is transmitted to the battery 1 through a circuit for charging, and the electric quantity generated by the generator 3 is distributed to the heating element 5 through the circuit, and the heating element 5 provides heat for the corresponding driving motor 4, the generator 3, the engine 2 and the battery 1; in this process, the power for vehicle travel is provided by the engine 2.

When T1 is greater than T0, the vehicle control unit 6 determines that the battery 1 can be started normally, and the vehicle control unit 6 executes S40 to control the battery 1 to supply power to the heating element 5 so as to raise the temperature of the driving motor 4, the generator 3, the engine 2 and the battery 1. The battery 1 can generate heat in the discharging process, the battery 1 can be stably kept at an ideal working temperature value in a low-temperature environment through the discharging heat of the battery 1 and the heat provided by the heating element 5 to the battery 1, the charging and discharging power of the battery 1 is ensured to be in an optimal range, the performance of the battery 1 is optimized, and the service life of the battery 1 is prolonged; in addition, heat is provided for other working components through the heating element 5, for example, the driving motor 4, the generator 3 and the engine 2, so that not only the battery 1 can quickly reach an ideal working temperature value in a low-temperature environment, but also the driving motor 4, the generator 3 and the engine 2 can stably work within an appropriate temperature range, and therefore the working performance and efficiency of a hybrid power system of a vehicle are improved, the heating rate is increased, energy conservation and emission reduction are achieved, and the driving consistency of the whole vehicle is maintained.

In this process, the battery 1 can also supply power to the drive motor 4 via an electrical circuit. The power for vehicle running can be provided by the engine 2, the driving motor 4, or both the engine 2 and the driving motor 4.

It is to be understood that S10 is a real-time acquisition process, S20 is a real-time judgment process, and the source of power supply to the heating member 5 may be changed in the process of supplying heat from the heating member 5 to the battery 1, the engine 2, the generator 3, and the drive motor 4.

Specifically, in a low-temperature environment, when the vehicle is just started, the vehicle controller 6 acquires, through the first temperature acquisition unit 11, that the first working temperature T1 of the battery 1 of the vehicle is-10 ℃, and the preset target temperature T0 is 0 ℃; the vehicle control unit 6 judges the battery 1 according to a preset heating program based on a first working temperature T1, T1 is more than T0, the vehicle control unit 6 executes S30, and an output shaft of the engine 2 rotates through oil injection and combustion, so that on one hand, power for vehicle running can be provided, on the other hand, the generator 3 can be driven to run, and mechanical energy is converted into electric energy; the electric quantity generated by the generator 3 is transmitted to the battery 1 through a circuit for charging, and the electric quantity generated by the generator 3 is distributed to the heating element 5 through the circuit, and the heating element 5 provides heat for the corresponding driving motor 4, the generator 3, the engine 2 and the battery 1; when the vehicle control unit 6 obtains the first working temperature T1 of the battery 1 of the vehicle as 5 ℃ through the first temperature acquisition unit 11, the vehicle control unit 6 judges the battery 1 according to a preset heating program based on the first working temperature T1, T1 is greater than T0, the vehicle control unit 6 executes S40, and at this time, the battery 1 supplies power to the heating element 5 to provide heat for the hybrid power system; it is to be understood that, in the process performed at S40, the engine 2 is not necessarily stopped; the power for vehicle running can be provided by the engine 2, the driving motor 4, or both the engine 2 and the driving motor 4.

Fig. 5 is a schematic flowchart of a third embodiment of the temperature control method of the present application, and as shown in fig. 1 to 5, the step S20 "determining whether the battery 1 can be started based on the first operating temperature T1" specifically includes:

s21, when the first working temperature T1 is lower than a first preset temperature threshold M1, judging that the battery 1 cannot be started; when the first operating temperature T1 is within the range of the first preset temperature threshold M1, it is determined that the battery 1 is able to start.

The vehicle control unit 6 compares the obtained first operating temperature T1 of the battery 1 with a first preset temperature threshold M1.

When the first working temperature T1 is lower than a first preset temperature threshold M1, that is, T1 is smaller than the minimum value of M1, the vehicle control unit 6 determines that the battery 1 cannot be normally started, the vehicle control unit 6 executes S30, starts the engine 2 of the vehicle to drive the generator 3, and the engine 2 drives the generator 3 to operate in an oil injection combustion state, so as to convert mechanical energy into electric energy; the electric quantity generated by the generator 3 is transmitted to the battery 1 through a circuit for charging, and the electric quantity generated by the generator 3 is distributed to the heating element 5 through the circuit, and the heating element 5 provides heat for the corresponding driving motor 4, the generator 3, the engine 2 and the battery 1; in this process, the power for vehicle travel is provided by the engine 2.

When the first operating temperature T1 is within the range of the first preset temperature threshold M1, that is, T1 is between the maximum value and the minimum value of M1, the vehicle control unit 6 determines that the battery 1 can be started normally, and the vehicle control unit 6 executes S40 to control the battery 1 to supply power to the heating element 5 to raise the temperatures of the driving motor 4, the generator 3, the engine 2 and the battery 1. The battery 1 can generate heat in the discharging process, the battery 1 can be stably kept at an ideal working temperature value in a low-temperature environment through the discharging heat of the battery 1 and the heat provided by the heating element 5 to the battery 1, the charging and discharging power of the battery 1 is ensured to be in an optimal range, the performance of the battery 1 is optimized, and the service life of the battery 1 is prolonged; in addition, heat is provided for other working components through the heating element 5, for example, the driving motor 4, the generator 3 and the engine 2, so that not only the battery 1 can quickly reach an ideal working temperature value in a low-temperature environment, but also the driving motor 4, the generator 3 and the engine 2 can stably work within an appropriate temperature range, and therefore the working performance and efficiency of a hybrid power system of a vehicle are improved, the heating rate is increased, energy conservation and emission reduction are achieved, and the driving consistency of the whole vehicle is maintained.

In addition, as shown in fig. 5, the temperature control method of the present application may further include step S10

S22, when the first operating temperature T1 is higher than the first preset temperature threshold M1, the heating member 5 stops supplying heat to the battery 1.

When the first operating temperature T1 is higher than the first preset temperature threshold M1, that is, T1 is greater than the maximum value of M1, the vehicle control unit 6 determines that the temperature of the battery 1 is too high, and at this time, it is not suitable to heat the battery 1 by the heater 5, and the vehicle control unit 6 controls the heating element 5 to stop supplying heat to the battery 1, so as to prevent the battery 1 from being charged and discharged at a high temperature and being heated to cause a safety accident or cause a performance reduction of the battery 1. The specific way of controlling the heating element 5 to stop supplying heat to the battery 1 by the vehicle control unit 6 may be to suspend the power generator 3, or to supply power to the heating element 5 corresponding to the battery 1 by the battery 1; it is also possible to directly control the heating member 5 corresponding to the battery 1 to reduce the heating power to 0.

In the embodiments of the present application, the first preset temperature threshold M1 is manually preset, the first preset temperature threshold M1 should be a temperature range that is suitable for charging and discharging of the battery 1 and does not affect the health degree of the battery 1, and the value of the first preset temperature threshold M1 may be set by evaluating the performance of the battery 1 in different environments obtained based on multiple repetitive experiments, or may be obtained by theoretical calculation according to the chemical properties of the material of the battery 1 itself; here, the first preset temperature threshold M1 may take a value of 0 to 40 ℃, -5 to 35 °, 10 to 45 °.

1-6, the vehicle control unit 6 executes a heating program stored on a storage medium to implement a temperature control method of a hybrid vehicle, which specifically includes:

s10, a first operating temperature T1 of the battery 1 is acquired.

S50, a first monitored temperature t1 on the heating member 5 corresponding to the battery 1 is acquired.

Here, the first heating cover 51 is the heating member 5 corresponding to the battery 1, and the first heating cover 51 may be provided with a first temperature sensor 511 capable of monitoring the temperature of the battery 1; the first temperature sensor 511 may be a heat-sensitive sensor, a pressure-sensitive sensor, or an infrared sensor; the voltage and current signals capable of reflecting the temperature of the battery 1 are converted into corresponding temperature data and then transmitted to the vehicle control unit 6.

S60, controlling the temperature of the battery 1 based on the first operating temperature T1, the first monitored temperature T1 and the first preset temperature threshold M1.

Here, the first operating temperature T1 and the first monitored temperature T1 are both temperature detections of the battery 1, and the values of the two should theoretically coincide with each other or not differ much; the first preset temperature threshold M1 is manually preset, and ideally, the first operating temperature T1 of the battery 1 should be within the range of the first preset temperature threshold M1. Controlling the temperature of the battery 1 based on the first operating temperature T1, the first monitored temperature T1 and the first preset temperature threshold M1; on the premise of ensuring accurate temperature detection, the temperature detection device is stably kept in an ideal working temperature range, ensures that the charging and discharging power of the battery 1 is in an optimal range, finally optimizes the performance of the battery 1 and prolongs the service life of the battery 1.

One possible embodiment, referring to fig. 6 and 7, S60 specifically includes:

s61, if the temperature difference S1 between the first working temperature T1 and the first monitoring temperature T1 is larger than a first preset value, a temperature difference fault is reported.

In this embodiment, the first predetermined value may be manually preset, for example, 3 ℃, 5 ℃ or 10 ℃. The first heating cover 51 covering the battery 1 is detected by the first temperature sensor 511 on the first heating cover 51 to feed back a first monitored temperature t 1; detecting the battery 1 through the first temperature acquisition unit 11 so as to feed back a first working temperature T1; the first heating mantle 51 may be directly mantled outside the battery 1 by a human, and thus the values of the first operating temperature T1 and the first monitored temperature T1 should be close to or equal in a case where the first heating mantle 51, the first temperature sensor 511, the battery 1, and the first temperature collection unit 11 are normal. In this step, when the temperature difference S1 between the first working temperature T1 and the first monitoring temperature T1 is greater than a first predetermined value, it can be determined that a temperature difference fault occurs in the part, and the temperature difference fault can be reported to the driver in an audible and visual manner through an alarm device of the vehicle, or the driver can be prompted through a screen display device of the vehicle; therefore, the first heating cover 51 and the battery 1 are prevented from being continuously used under the condition of temperature sampling failure, and the charging and discharging performance of the battery 1 is prevented from being reduced due to overheating and burnout of the battery 1 or overcooling.

When the temperature difference S1 between the first operating temperature T1 and the first monitored temperature T1 is smaller than a first predetermined value, it can be determined that the first heating cover 51, the first temperature sensor 511, the battery 1, and the first temperature acquisition unit 11 are in a normal operating state, and the first operating temperature T1 fed back to the vehicle controller 6 by the first temperature acquisition unit 11 is the actual temperature of the battery 1.

S62, if the temperature difference S1 between the first operating temperature T1 and the first monitored temperature T1 is less than a first predetermined value, and the first operating temperature T1 is lower than a first preset temperature threshold M1, increasing the heating power of the heating element 5 corresponding to the battery 1.

The first operating temperature T1 is lower than the first preset temperature threshold M1, and the heating power of the first heating mantle 51 is increased. Specifically, the vehicle control unit 6 compares the obtained first operating temperature T1 of the battery 1 with a first preset temperature threshold M1. When the first operating temperature T1 is lower than the first preset temperature threshold M1, that is, T1 is smaller than the minimum value of M1, and the vehicle control unit 6 determines that the temperature of the battery 1 is too low to start normally, the vehicle control unit 6 increases the heating power of the first heating cover 51, so that the battery 1 can be heated to the ideal operating temperature value quickly.

S63, if the temperature difference S1 between the first operating temperature T1 and the first monitored temperature T1 is less than a first predetermined value, and the first operating temperature T1 is within a first preset temperature threshold M1 range, the heating power of the heating element 5 corresponding to the battery 1 is reduced.

The first operating temperature T1 is within the first preset temperature threshold M1, and the heating power of the first heating mantle 51 is reduced. Specifically, the vehicle control unit 6 compares the obtained first operating temperature T1 of the battery 1 with a first preset temperature threshold M1. When the first operating temperature T1 is within the range of the first preset temperature threshold M1, that is, T1 is between the maximum value and the minimum value of M1, the vehicle controller 6 determines that the battery 1 is at an ideal operating temperature value, and can start normally, and in consideration of the fact that the battery 1 generates heat and increases temperature in the charging and discharging processes, the vehicle controller 6 reduces the heating power of the first heating cover 51, so that the battery 1 is stably maintained within the ideal operating temperature range.

And S64, if the temperature difference S1 between the first working temperature T1 and the first monitored temperature T1 is smaller than a first preset value, and the first working temperature T1 is higher than a first preset temperature threshold value M1, controlling the heating element 5 corresponding to the battery 1 to stop heating.

The first operating temperature T1 is higher than the first preset temperature threshold M1, and the heating of the first heating mantle 51 is controlled to stop. Specifically, the vehicle control unit 6 compares the obtained first operating temperature T1 of the battery 1 with a first preset temperature threshold M1. When the first operating temperature T1 is higher than a first preset temperature threshold M1, that is, T1 is greater than the maximum value of M1, and the vehicle control unit 6 determines that the temperature of the battery 1 is too high, the vehicle control unit 6 controls the heating power of the first heating cover 51 to be 0; so that the operating temperature of the battery 1 is not too high.

It should be understood that, in the embodiments of the present application, the vehicle control unit 6 may adjust the heating power of the heating element 5; the adjusting mode can be various, for example, the voltage and the current output by the generator 3 or the battery 1 to the heating element 5 are increased, the voltage and the current can be reduced, or the heating power of the heating element 5 can be intelligently controlled by arranging a stepless speed regulating switch or a gear switch.

Now, taking the first heating cover 51 as a resistance wire heater with a fifth gear adjusting gear, specifically for example, the first preset temperature threshold M1 is 0-40 ℃, and the first preset value is 10 ℃.

When the vehicle is just started, the first working temperature T1 fed back to the vehicle controller 6 by the first temperature acquisition unit 11 is-10 ℃, and the vehicle controller 6 compares the obtained first working temperature T1 of the battery 1 with a first preset temperature threshold M1. When the temperature of the battery is-10 ℃ and is lower than the minimum value 0 ℃ of the first preset temperature threshold M1, the temperature of the battery 1 is too low to start normally, the step S30 is executed, the power is supplied to the first heating cover 51 through the generator 3, so that the temperature of the battery 1 is raised, at the moment, the first heating cover 51 is selected from 3 grades, and the heating power is 1000 w.

Every 5min, the vehicle control unit 6 controls the temperature of the battery 1 based on the first operating temperature T1, the first monitored temperature T1 and the first preset temperature threshold M1.

The vehicle is started for 5 minutes, and the first working temperature T1 fed back to the vehicle controller 6 by the first temperature acquisition unit 11 is-5 ℃; the first temperature t1 fed back by the first temperature sensor 511 to the vehicle control unit 6 is 0 ℃, the temperature difference S1 between the two is 5 ° and is smaller than the prescribed first preset value, and therefore-5 ℃ is the actual temperature of the battery 1. The vehicle control unit 6 continues to compare the obtained first operating temperature T1 of the battery 1 with the first preset temperature threshold M1. When the temperature of the battery is-5 ℃ and is lower than the minimum value 0 ℃ of the first preset temperature threshold value M1, the temperature of the battery 1 is still too low to be started normally, S62 is executed, the vehicle control unit 6 controls the first heating cover 51 to select 4 grades, and the heating power is 1200w, so that the temperature of the battery 1 can be rapidly increased to an ideal working temperature value.

The vehicle is started for 10 minutes, and the first working temperature T1 fed back to the vehicle controller 6 by the first temperature acquisition unit 11 is 15 ℃; the first temperature t1 fed back by the first temperature sensor 511 to the vehicle control unit 6 is 10 ℃, the temperature difference S1 between the two is 5 ° and is smaller than the prescribed first preset value, and thus 10 ℃ is the actual temperature of the battery 1. The vehicle control unit 6 continues to compare the obtained first operating temperature T1 of the battery 1 with the first preset temperature threshold M1. The first operating temperature T1 of the battery 1 is 10 ℃ and is within the range of the first preset temperature threshold M1, the vehicle control unit 6 determines that the battery 1 is at an ideal operating temperature value, and can normally start to supply power to the heating element 5, and also can supply power to the driving motor 4 to provide advancing power, and certainly can be in a state where the generator 3 charges the battery 1, and considering that the battery 1 heats up and rises in the charging and discharging processes, therefore, S63 is executed, the vehicle control unit 6 reduces the heating power of the first heating cover 51 to 3 steps, and the heating power is 1000w, so that the battery 1 is stably maintained within the ideal operating temperature range.

The vehicle is started for 15 minutes, the first working temperature T1 fed back to the vehicle controller 6 by the first temperature acquisition unit 11 is 25 ℃, and similar to the above process, the process continues to be executed S63, and the vehicle controller 6 reduces the heating power of the first heating cover 51 to 2 steps, and the heating power is 800w, so that the battery 1 is stably maintained in the ideal working temperature range. The shift position to be lowered each time may be the 1 st shift position or another shift position selected as necessary, as long as the heating power of the first heating jacket 51 can be lowered.

The vehicle is started for 20 minutes, and the first working temperature T1 fed back to the vehicle controller 6 by the first temperature acquisition unit 11 is 50 ℃; the first temperature t1 fed back by the first temperature sensor 511 to the vehicle control unit 6 is 55 ℃, the temperature difference S1 between the two is 5 ° and is smaller than the prescribed first preset value, and therefore 50 ℃ is the actual temperature of the battery 1. The vehicle control unit 6 continues to compare the obtained first operating temperature T1 of the battery 1 with the first preset temperature threshold M1. The first working temperature T1 of the battery 1 is 50 ℃ higher than a first preset temperature threshold M1, and the working temperature of the battery 1 is judged to be too high, so that the battery 1 is not suitable to be heated by the heater 5; executing S64, the vehicle control unit 6 closes the first heating cover 51 to make the heating power of the first heating cover 0; thereby preventing operation of the battery 1 at a higher operating temperature.

In a specific example of this embodiment, the step S60 is executed once every a period of time N, where N may be a preset value, for example, 5min or 10 min; however, the step of S60 may be performed as a continuous process; at this time, the vehicle controller 6 controls the heating element 5 (the first heating cover 51) in real time based on the first operating temperature T1, the first monitored temperature T1 and the first preset temperature threshold M1, so as to control the temperature of the battery 1.

In one possible embodiment, S64 may further include: the battery cooling system is started.

The vehicle includes a battery cooling system, which may be a condenser fan, an air radiator, or the like; the structure of the battery cooling system is many in the field, and reference may be made to the structure shown in the battery temperature control system with application number cn20211069681. x, which is not described herein again.

When the temperature difference S1 between the first operating temperature T1 and the first monitored temperature T1 is smaller than a first predetermined value, the first operating temperature T1 fed back to the vehicle controller 6 by the first temperature acquisition unit 11 is the actual temperature of the battery 1. When the first operating temperature T1 is higher than the first preset temperature threshold M1, the first heating cover 51 is controlled to stop heating, and the battery cooling system is started. Specifically, the vehicle control unit 6 compares the obtained first operating temperature T1 of the battery 1 with a first preset temperature threshold M1. When the first operating temperature T1 is higher than the first preset temperature threshold M1, that is, T1 is greater than the maximum value of M1, and the vehicle controller 6 determines that the temperature of the battery 1 is too high, the vehicle controller 6 controls the heating power of the first heating cover 51 to be 0; the battery cooling system is activated so that the operating temperature of the battery 1 is not too high.

1-5, and 8, 9, the vehicle control unit 6 executes a heating program stored on a storage medium to implement a temperature control method for a hybrid vehicle, which specifically includes:

s10, a first operating temperature T1 of the battery 1 is acquired.

S30, if the battery 1 can not be started, the engine 2 is started to drive the generator 3 to operate; the generator 3 charges the battery 1 and the generator 3 supplies power to the heating member 5 to raise the temperature of the driving motor 4, the generator 3, the engine 2, and the battery 1.

And S70, acquiring the working temperature of the working component.

Here, the working member may be any one of the drive motor 4, the generator 3, and the engine 2. Accordingly, the vehicle may be provided with a second temperature collection unit 21 capable of detecting the temperature of the engine 2, a third temperature collection unit 31 capable of detecting the temperature of the generator 3, and a fourth temperature collection unit 41 capable of detecting the temperature of the drive motor 4.

The second temperature acquisition unit 21, the third temperature acquisition unit 31 and the fourth temperature acquisition unit 41 can be thermal sensors, pressure-sensitive sensors or infrared sensors; the vehicle control unit 6 receives the temperature sampling of the second temperature acquisition unit 21 to acquire a second working temperature corresponding to the engine 2; the vehicle control unit 6 receives the temperature sampling of the third temperature acquisition unit 31 to acquire a third working temperature corresponding to the generator 3; the vehicle control unit 6 receives the temperature sampling of the fourth temperature acquisition unit 41 to obtain a fourth working temperature of the corresponding driving motor 4.

S80, acquiring the monitored temperature on the heating element 5 of the corresponding workpiece.

Here, the second heating mantle 52 is the heating member 5 corresponding to the engine 2, and the second heating mantle 52 may be provided with a second temperature sensor 521 capable of monitoring the temperature of the engine 2, and the second temperature sensor 521 may feed back a second monitored temperature corresponding to the engine 2. The third heating mantle 53 is a heating member 5 corresponding to the generator 3, and the third heating mantle 53 may be provided with a third temperature sensor 531 capable of monitoring the temperature of the generator 3; the third temperature sensor 531 may feed back a third monitored temperature of the corresponding generator 3. The fourth heating cover 54 is a heating member 5 corresponding to the driving motor 4, and the fourth heating cover 54 may be provided with a fourth temperature sensor 541 capable of monitoring the temperature of the driving motor 4; the fourth temperature sensor 541 may feed back a fourth monitored temperature corresponding to the drive motor 4.

The second temperature sensor 521, the third temperature sensor 531, and the fourth temperature sensor 541 may be a heat-sensitive sensor, a pressure-sensitive sensor, or an infrared sensor; the second temperature sensor 521, the third temperature sensor 531 and the fourth temperature sensor 541 may convert voltage and current signals respectively reflecting the temperatures of the engine 2, the generator 3 and the driving motor 4 into corresponding temperature data, and then transmit the temperature data to the vehicle control unit 6.

And S90, controlling the temperature of the working component based on the working temperature, the monitored temperature and the preset temperature threshold value of the corresponding working component.

It is understood that, for each working element, the working temperature and the monitored temperature obtained in S70 and S80 correspond to the working element; correspondingly, for each working component, a preset temperature threshold value is correspondingly set to realize temperature control.

The step S90 specifically includes:

and S91, if the temperature difference between the working temperature corresponding to the working component and the monitored temperature is larger than a preset value, reporting a temperature difference fault.

In various embodiments of the present application, the predetermined value may be preset manually, for example, 3 ℃, 5 ℃, or 10 ℃. Typically one working member corresponds to one single predetermined value, i.e. the engine 2 will correspond to the second predetermined value, the generator 3 will correspond to the third predetermined value and the drive motor 4 will correspond to the fourth predetermined value.

As exemplified in the case of the engine 2, the second heating mantle 52 provided on the engine 2 is detected by the second temperature sensor 521 provided on the second heating mantle 52 to feed back the second monitored temperature t 2; the engine 2 is detected by the second temperature acquisition unit 21 to feed back a second operating temperature T2; in the case where the second heating mantle 52, the second temperature sensor 521, the engine 2, and the second temperature collecting unit 21 are normal, the values of both the second operating temperature T2 and the second monitored temperature T2 should be close to or equal to each other. In this step, when the temperature difference S2 between the second operating temperature T2 and the second monitored temperature T2 is greater than a second predetermined value, it may be determined that the engine 2 has a temperature difference fault, and the temperature difference fault may be reported to the driver in an audible and visual manner through an alarm device of the vehicle, or may be reported to the driver through a screen display device of the vehicle; thereby preventing continued use of the second heat exchanger 52 with the engine 2 in the event of a temperature sampling failure, avoiding damage to the engine 2. The temperature control processes of the rest of the generators 3 and the driving motors 4 are basically the same, and are not described again.

And S92, if the temperature difference between the working temperature corresponding to the working component and the monitored temperature is less than a preset value and the working temperature corresponding to the working component is lower than the preset temperature threshold range of the corresponding working component, increasing the heating power of the heating element 5 of the corresponding working component.

In the embodiments of the present application, the preset temperature threshold may be manually preset, generally, one working component corresponds to one single preset temperature threshold, the engine 2 corresponds to the second preset temperature threshold M2, the generator 3 corresponds to the third preset temperature threshold M3, and the driving motor 4 corresponds to the fourth preset temperature threshold M4.

Wherein the second preset temperature threshold M2 should be within a temperature range suitable for normal operation of the engine 2, and may take a value of-20 ℃ to 70 ℃; the third preset temperature threshold M3 is a temperature range suitable for normal work of the generator 3, and can take a value of-10-60 ℃; the fourth preset temperature threshold M4 should be within a temperature range suitable for normal operation of the driving motor 4, and may take a value of-10 to 60 ℃.

In the embodiment of the application, when the temperature difference between the working temperature corresponding to the working component and the monitored temperature is smaller than the preset value, the working component can be judged to be in a normal working state, and the working temperature corresponding to the working component is the actual temperature.

For example, by using the generator 3, when the temperature difference between the third operating temperature T3 and the third monitored temperature T3 is smaller than a third predetermined value, it may be determined that the generator 3 is in a normal operating state, and the third operating temperature T3 fed back to the vehicle control unit 6 by the third temperature acquisition unit 31 is the actual operating temperature of the generator 3. When the third operating temperature T3 is lower than the third preset temperature threshold M3, the heating power of the first heating mantle 51 is increased. That is to say, the vehicle control unit 6 compares the obtained third operating temperature T3 of the generator 3 with a third preset temperature threshold M3; when the third operating temperature T3 is lower than the third preset temperature threshold M3, T3 is smaller than the minimum value of M3, and the vehicle control unit 6 determines that the temperature of the generator 3 is too low, the vehicle control unit 6 increases the heating power of the third heating cover 53, so that the generator 3 can be rapidly heated to the ideal operating temperature value. The temperature control processes of the rest of the engine 2 and the driving motor 4 are basically the same, and are not described again.

And S93, if the temperature difference between the working temperature corresponding to the working part and the monitored temperature is less than a preset value, and the working temperature corresponding to the working part is in the range of the preset temperature threshold value of the corresponding working part, reducing the heating power of the heating element 5 of the corresponding working part.

Taking the driving motor 4 as an example, if the fourth operating temperature T4 is within the range of the fourth preset temperature threshold M4, the heating power of the fourth heating mantle 54 is reduced. Specifically, the vehicle control unit 6 compares the obtained fourth operating temperature T4 of the drive motor 4 with a fourth preset temperature threshold M4. When the fourth operating temperature T4 is within the range of the fourth preset temperature threshold M4, that is, T4 is between the maximum value and the minimum value of M4, the vehicle control unit 6 determines that the driving motor 4 is at the ideal operating temperature value, and can operate normally, and considering that the driving motor 4 generates heat and increases temperature during driving, the vehicle control unit 6 reduces the heating power of the fourth heating cover 54, so that the driving motor 4 is stably maintained within the ideal operating temperature range. The temperature control processes of the rest of the engine 2 and the generator 3 are basically the same, and are not described in detail herein.

And S94, if the temperature difference between the working temperature corresponding to the working component and the monitored temperature is less than a preset value and the working temperature corresponding to the working component is higher than a preset temperature threshold value of the corresponding working component, stopping heating the heating element 5 of the corresponding working component.

For example, in the case of the engine 2, the second operating temperature T2 is higher than the second preset temperature threshold M2, and the heating of the second heating mantle 52 is controlled to be stopped. The vehicle control unit 6 compares the obtained second operating temperature T2 of the engine 2 with a second preset temperature threshold M2. When the second operating temperature T2 is higher than the second preset temperature threshold M2, that is, T2 is greater than the maximum value of M2, and the vehicle controller 6 determines that the temperature of the engine 2 is too high, the vehicle controller 6 controls the heating power of the second heating cover 52 to be 0; so that the operating temperature of the engine 2 is not too high.

In a possible embodiment, if the temperature difference between the second operating temperature T2 and the second monitored temperature T2 is less than a second predetermined value, and the second operating temperature T2 is higher than a second predetermined temperature threshold, the second heating cover 52 is controlled to stop heating, and the engine cooling system is started.

The vehicle comprises an engine cooling system, wherein the engine cooling system can be a condensing fan, a water cooling plate, a water pump and the like; the engine cooling system has many structures in the field, and reference may be made to the structure shown in the battery temperature control system with application number cn20211069681. x, which is not described herein again.

In the embodiment of the application, the heating power of the heating element 5 corresponding to the working part is controlled to be 0 by the vehicle control unit 6, and the vehicle control unit is matched with a corresponding engine cooling system, so that the working temperature of the engine 2 is not too high, the system stability is effectively improved, and the service life is prolonged.

The various embodiments/implementations provided herein can be combined with each other without contradiction.

The above description is only a preferred embodiment of the present application and is not intended to limit the present application, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims

1. A temperature control method applied to a hybrid vehicle, characterized by comprising:

acquiring a first working temperature T1 of the battery (1);

determining whether the battery (1) can be started based on the first operating temperature T1;

if the battery (1) cannot be started, starting the engine (2) to drive the generator (3) to operate; the generator (3) charges the battery (1), and the generator (3) supplies power to a plurality of heating members (5) of the hybrid vehicle to raise the temperatures of the drive motor (4), the generator (3), the engine (2), and the battery (1).

2. The temperature control method according to claim 1, characterized in that after the step of determining whether the battery (1) can be started based on the first operating temperature T1, it comprises:

the battery (1) can be started, and then the battery (1) is controlled to supply power to the heating element (5) so as to raise the temperature of the driving motor (4), the generator (3), the engine (2) and the battery (1).

3. The temperature control method according to claim 1 or 2, wherein the step of determining whether the battery (1) can be started based on the first operating temperature T1 specifically comprises:

when the first working temperature T1 is lower than a first preset temperature threshold M1, the battery (1) is judged to be incapable of being started;

when the first operating temperature T1 is within a first preset temperature threshold M1, it is determined that the battery (1) can be started.

4. The temperature control method according to claim 1 or 2, characterized by further comprising:

-acquiring a first monitored temperature t1 on a heating element (5) corresponding to said battery (1);

controlling the temperature of the battery (1) based on the first operating temperature T1, the first monitored temperature T1 and a first preset temperature threshold M1.

5. The temperature control method according to claim 4, characterized in that the step of controlling the temperature of the battery (1) on the basis of the first operating temperature T1, the first monitored temperature T1 and the first preset temperature threshold M1 comprises in particular:

if the temperature difference S1 between the first working temperature T1 and the first monitored temperature T1 is smaller than a first preset value, and the first working temperature T1 is lower than a first preset temperature threshold value M1, increasing the heating power of a heating element (5) corresponding to the battery (1);

if the temperature difference S1 between the first operating temperature T1 and the first monitored temperature T1 is less than a first predetermined value, and the first operating temperature T1 is within a first preset temperature threshold M1, reducing the heating power of the heating element (5) corresponding to the battery (1);

and if the temperature difference S1 between the first working temperature T1 and the first monitoring temperature T1 is smaller than a first preset value and the first working temperature T1 is higher than a first preset temperature threshold M1, controlling the heating element (5) corresponding to the battery (1) to stop heating.

6. The temperature control method according to claim 1 or 2, characterized by comprising:

acquiring the working temperature of a working component, wherein the working component is one of the driving motor (4), the generator (3) and the engine (2);

acquiring a monitored temperature on a heating element (5) corresponding to the working component;

controlling the temperature of the working component based on the working temperature, the monitored temperature and a preset temperature threshold corresponding to the working component.

7. The method according to claim 6, wherein the step of controlling the temperature of the working component based on the operating temperature, the monitored temperature and a preset temperature threshold corresponding to the working component comprises:

if the temperature difference between the working temperature corresponding to the working part and the monitored temperature is smaller than a preset value and the working temperature corresponding to the working part is lower than the preset temperature threshold value corresponding to the working part, the heating power of a heating element (5) corresponding to the working part is increased;

if the temperature difference between the working temperature corresponding to the working part and the monitored temperature is smaller than a preset value, and the working temperature corresponding to the working part is in the range of a preset temperature threshold corresponding to the working part, reducing the heating power of a heating element (5) corresponding to the working part;

and if the temperature difference between the working temperature corresponding to the working part and the monitored temperature is less than a preset value and the working temperature corresponding to the working part is higher than a preset temperature threshold corresponding to the working part, stopping heating the heating part (5) corresponding to the working part.

8. The temperature control method according to claim 1 or 2, wherein the heating member (5) is a heating mantle assembly constituted by a plurality of heating mantles in common;

the generator (3) supplies power to a heating element (5) so as to raise the temperature of the driving motor (4), the generator (3), the engine (2) and the battery (1), and the method specifically comprises the following steps:

raising the temperature of the drive motor (4) in correspondence of the heating element (5) of the drive motor (4);

raising the temperature of the generator (3) in correspondence of the heating element (5) of the generator (3);

raising the temperature of the engine (2) in correspondence of the heating element (5) of the engine (2);

the heating element (5) corresponding to the battery (1) raises the temperature of the battery (1).

9. A vehicle, characterized by comprising a vehicle control unit (6), a storage medium, and a heating program of a hybrid vehicle stored on the storage medium and operable on the vehicle control unit (6), the heating program being executed by the vehicle control unit (6) to implement the temperature control method according to any one of claims 1 to 8.

10. A storage medium characterized in that a heating program capable of implementing the temperature control method according to any one of claims 1 to 8 is stored thereon.