Heating management method and device for electric vehicle

Abstract

The present invention discloses a heating management method and device for an electric vehicle, which relates to the field of automotive technology and has the main purpose of reducing the slow charging time of the battery and the time of air conditioning heating. The main technical solution of the present invention is: obtaining the battery minimum temperature, battery maximum temperature, and battery charging status sent by the battery management system, the air conditioning working status and air conditioning circuit water temperature sent by the air conditioning system, and the charger real-time water temperature sent by the charger; based on the battery minimum temperature, battery maximum temperature, battery charging status, and charger real-time water temperature, determining whether the battery meets the conditions for heating by the charger; based on the charger real-time water temperature, air conditioning circuit water temperature, and air conditioning working status, determining whether the air conditioning circuit meets the conditions for heating by the charger; if so, heating the battery and air conditioning circuit by the charger to achieve heating management of the electric vehicle. The present invention is used for heating management of electric vehicles.

Description

Technical Field

[0001] The present invention relates to the field of automobile technology, and in particular to a heating management method and device for an electric vehicle. Background Art

[0002] When electric vehicles are in a low-temperature environment, the heating management of electric vehicles is very important. The heating management of electric vehicles includes air-conditioning heating and battery temperature increase. If the air-conditioning is turned on or the battery is slowly charged in a low-temperature environment, the battery water circuit and the air-conditioning water circuit need to be heated in advance by the heater to increase the battery temperature and achieve air-conditioning heating.

[0003] However, heating the battery water circuit and the air conditioning water circuit by the heater is to reheat the battery after the battery temperature gradually drops to the set threshold, and stop heating after heating to the set threshold, and repeat this cycle. Such a cycle will greatly increase the slow charging time of the battery and extend the heating time of the air conditioner. Summary of the Invention

[0004] In view of the above problems, the present invention provides a heating management method and device for an electric vehicle, the main purpose of which is to reduce the slow charging time of the battery and the heating time of the air conditioner.

[0005] In order to solve the above technical problems, the present invention proposes the following solutions:

[0006] In a first aspect, the present invention provides a heating management method for an electric vehicle, the method comprising:

[0007] Obtain the battery minimum temperature, battery maximum temperature, and battery charging status sent by the battery management system, the air conditioning working status and air conditioning circuit water temperature sent by the air conditioning system, and the real-time charger water temperature sent by the charger;

[0008] determining whether the battery meets the conditions for being heated by the charger based on the minimum battery temperature, the maximum battery temperature, the battery charging state, and the real-time water temperature of the charger; and determining whether the air conditioning circuit meets the conditions for being heated by the charger based on the real-time water temperature of the charger, the water temperature of the air conditioning circuit, and the air conditioning operating state;

[0009] If the conditions are met, the battery and air conditioning circuit are heated through the charger to achieve heating management of the electric vehicle.

[0010] In a second aspect, the present invention provides a heating management device for an electric vehicle, the device comprising:

[0011] An acquisition unit is used to obtain the battery minimum temperature, battery maximum temperature, and battery charging status sent by the battery management system, the air conditioning working status and air conditioning circuit water temperature sent by the air conditioning system, and the real-time charger water temperature sent by the charger;

[0012] a determining unit, configured to determine whether the battery meets a condition for being heated by the charger based on the battery minimum temperature, the battery maximum temperature, the battery charging state, and the real-time water temperature of the charger obtained by the obtaining unit, and to determine whether the air-conditioning circuit meets a condition for being heated by the charger based on the real-time water temperature of the charger, the air-conditioning circuit water temperature, and the air-conditioning operating state obtained by the obtaining unit;

[0013] The heating unit is used to heat the battery and the air-conditioning circuit through the charger if the determining unit determines that the conditions are met, so as to realize heating management of the electric vehicle.

[0014] In order to achieve the above-mentioned purpose, according to a third aspect of the present invention, a storage medium is provided, which includes a stored program, wherein when the program is running, the device where the storage medium is located is controlled to execute the heating management method of the electric vehicle according to the first aspect.

[0015] In order to achieve the above object, according to a fourth aspect of the present invention, a processor is provided, which is used to run a program, wherein the program executes the heating management method of the electric vehicle according to the first aspect when running.

[0016] By means of the above technical scheme, the present invention provides a heating management method and device for an electric vehicle, wherein the battery management system can first send the battery minimum temperature, the battery maximum temperature, and the battery charging status to the vehicle controller, the air-conditioning system can first send the air-conditioning working status and the air-conditioning circuit water temperature to the vehicle controller, and the charger can send the charger real-time water temperature to the vehicle controller. Afterwards, the vehicle controller can obtain the battery minimum temperature, the battery maximum temperature, and the battery charging status sent by the battery management system, the air-conditioning working status and the air-conditioning circuit water temperature sent by the air-conditioning system, and the charger real-time water temperature sent by the charger, and then determine whether the battery meets the conditions for heating by the charger based on the battery minimum temperature, the battery maximum temperature, the battery charging status and the charger real-time water temperature, and at the same time determine whether the air-conditioning circuit meets the conditions for heating by the charger based on the charger real-time water temperature, the air-conditioning circuit water temperature and the air-conditioning working status. If the conditions are met, the battery and the air-conditioning circuit can be directly heated by the charger to realize heating management of the electric vehicle. Since the charger generates heat when working, the charger can be used directly to heat the battery and air-conditioning circuit. In this way, the slow charging time of the battery can be reduced to a certain extent, and the air-conditioning can be heated quickly. There is no need to use a heater to circulate heat for the battery water circuit and the air-conditioning water circuit in advance, and it can also save energy consumption for circulating heat for the battery water circuit and the air-conditioning water circuit in advance through the heater.

[0017] The above description is only an overview of the technical solution of the present invention. In order to more clearly understand the technical means of the present invention, it can be implemented in accordance with the contents of the specification. In order to make the above and other purposes, features and advantages of the present invention more obvious and easy to understand, the specific implementation methods of the present invention are specifically listed below. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Various other advantages and benefits will become apparent to those skilled in the art upon reading the detailed description of the preferred embodiment below. The accompanying drawings are for illustration purposes only and are not to be considered as limiting the present invention. The same reference symbols are used throughout the drawings to represent the same components. In the drawings:

[0019] Figure 1 A flow chart of a heating management method for an electric vehicle provided by an embodiment of the present invention is shown;

[0020] Figure 2 A flow chart of another heating management method for an electric vehicle provided by an embodiment of the present invention is shown;

[0021] Figure 3 A block diagram showing the composition of a heating management device for an electric vehicle provided by an embodiment of the present invention is shown;

[0022] Figure 4 A block diagram showing the composition of another heating management device for an electric vehicle provided by an embodiment of the present invention is shown. DETAILED DESCRIPTION

[0023] Exemplary embodiments of the present disclosure will be described in more detail below with reference to the accompanying drawings. Although exemplary embodiments of the present disclosure are shown in the accompanying drawings, it should be understood that the present disclosure can be implemented in various forms and should not be limited by the embodiments set forth herein. Rather, these embodiments are provided to enable a more thorough understanding of the present disclosure and to fully convey the scope of the present disclosure to those skilled in the art.

[0024] When an electric vehicle is in a low-temperature environment, the heating management of the electric vehicle is very important. The heating management of the electric vehicle includes air-conditioning heating and battery temperature increase. If the air-conditioning is turned on or the battery is slowly charged in a low-temperature environment, the battery water path and the air-conditioning water path need to be heated in advance by the heater to increase the battery temperature and realize air-conditioning heating. However, the heating of the battery water path and the air-conditioning water path by the heater is to reheat the battery after the battery temperature gradually drops to the set threshold, and stop heating after heating to the set threshold, and repeat this cycle. Such a cycle will greatly increase the slow charging time of the battery and extend the air-conditioning heating time. To this end, the present invention provides a heating management method for an electric vehicle, which can reduce the slow charging time of the battery and the air-conditioning heating time, and its specific execution steps are as follows: Figure 1 Shown, including:

[0025] 101. Obtain the battery minimum temperature, battery maximum temperature, and battery charging status sent by the battery management system, the air conditioning operating status and air conditioning circuit water temperature sent by the air conditioning system, and the real-time charger water temperature sent by the charger.

[0026] In the present invention, there are a vehicle controller, a battery management system, a charger, an air conditioning system, a water pump, and a three-way valve. The execution process of the present invention is also the interaction process between the vehicle controller, the battery management system, the charger, the air conditioning system, the water pump, and the three-way valve.

[0027] At the beginning of the process of the present invention, the battery management system will send the battery minimum temperature, battery maximum temperature and battery charging status to the vehicle controller in real time. At the same time, the air-conditioning system will also send the air-conditioning working status and air-conditioning circuit water temperature to the vehicle controller in real time. At the same time, the charger will also send the charger water temperature to the vehicle controller in real time.

[0028] Therefore, in this invention, the vehicle controller can obtain the battery's minimum temperature, maximum temperature, and battery charge status from the battery management system, the air conditioning operating status and air conditioning circuit water temperature from the air conditioning system, and the real-time charger water temperature from the charger. Therefore, the implementation of this invention is the vehicle controller.

[0029] 102. Determine whether the battery meets the conditions for being heated by the charger based on the battery minimum temperature, battery maximum temperature, battery charging status, and real-time charger water temperature. Determine whether the air conditioning circuit meets the conditions for being heated by the charger based on the real-time charger water temperature, air conditioning circuit water temperature, and air conditioning operating status.

[0030] After receiving the battery's minimum and maximum temperatures, the battery's charge status, and the charger's real-time water temperature, the vehicle controller can perform a comprehensive logical judgment based on these values to determine whether the battery meets the conditions for charger heating. Simultaneously, after receiving the air conditioning circuit water temperature and air conditioning operating status, the controller can also perform a comprehensive logical judgment based on these values, combined with the charger's real-time water temperature, to determine whether the air conditioning circuit meets the conditions for charger heating. If so, step 103 is executed. If not, the battery and air conditioning circuit can be heated using a designated heater.

[0031] Specifically, to determine whether the battery meets the conditions for being heated by the charger, the battery's minimum temperature, battery's maximum temperature, battery charging status, and charger's real-time water temperature may each meet a certain condition, or the battery's minimum temperature, battery's maximum temperature, battery charging status, and charger's real-time water temperature may meet a certain condition; similarly, to determine whether the air-conditioning circuit meets the conditions for being heated by the charger, the air-conditioning circuit water temperature, air-conditioning working status, and charger's real-time water temperature may each meet a certain condition, or the air-conditioning circuit water temperature, air-conditioning working status, and charger's real-time water temperature may meet a certain condition.

[0032] 103. The battery and air conditioning system are heated by the charger to achieve heating management of electric vehicles.

[0033] After determining in step 102 that the air conditioning system and the battery meet the conditions for being heated by the charger, the battery and the air conditioning circuit can be heated by the charger to achieve heating management of the electric vehicle.

[0034] Specifically, when the charger heats the battery, the first water pump and the first three-way valve may be opened to allow water of a specified temperature in the charger circuit to flow into the first water pump and the first three-way valve, and finally flow into the battery circuit, so that the water from the charger heats the battery circuit, and finally heats the battery; when the charger heats the air-conditioning circuit, the second water pump and the second three-way valve may be opened to allow water of a specified temperature in the charger circuit to flow into the second water pump and the second three-way valve, and finally flow into the air-conditioning circuit, so that the water from the charger heats the coolant in the air-conditioning circuit, and finally heats the air-conditioning system.

[0035] The designated temperature may be 40 degrees, but is not necessarily limited to 40 degrees, and may be reasonably set according to specific circumstances.

[0036] It should be noted that the first water pump, the first three-way valve; the second water pump and the second three-way valve can be set in combination with the charger circuit, the battery location, and the air-conditioning circuit location, but it is necessary to ensure that the water in the charger circuit can flow through the first water pump and the first three-way valve and finally flow into the battery circuit, so that the water from the charger heats the battery circuit and finally heats the battery. At the same time, the water can flow into the second water pump and the second three-way valve to heat the coolant in the air-conditioning circuit through the water from the charger, thereby realizing heating of the air-conditioning system.

[0037] Based on the above Figure 1It can be seen from the implementation method that the present invention provides a heating management method for an electric vehicle, the battery management system can first send the battery minimum temperature, battery maximum temperature, and battery charging status to the vehicle controller, the air-conditioning system can first send the air-conditioning working status and air-conditioning loop water temperature to the vehicle controller, and the charger can send the charger real-time water temperature to the vehicle controller. Afterwards, the vehicle controller can obtain the battery minimum temperature, battery maximum temperature, battery charging status sent by the battery management system, the air-conditioning working status and air-conditioning loop water temperature sent by the air-conditioning system, and the charger real-time water temperature sent by the charger, and then determine whether the battery meets the conditions for heating by the charger based on the battery minimum temperature, battery maximum temperature, battery charging status and charger real-time water temperature, and at the same time determine whether the air-conditioning loop meets the conditions for heating by the charger based on the charger real-time water temperature, air-conditioning loop water temperature and air-conditioning working status. If the conditions are met, the battery and air-conditioning loop can be directly heated by the charger to realize heating management of the electric vehicle. Since the charger generates heat when working, the charger can be used directly to heat the battery and air-conditioning circuit. In this way, the slow charging time of the battery can be reduced to a certain extent, and the air-conditioning can be heated quickly. There is no need to use a heater to heat the battery water circuit and the air-conditioning water circuit in advance, and it can also save the energy consumption of circulating heating the battery water circuit and the air-conditioning water circuit in advance through the heater.

[0038] Furthermore, as a Figure 1 The embodiment shown in the figure is refined and expanded. The embodiment of the present invention also provides another heating management method for electric vehicles, such as Figure 2 As shown, the specific steps are as follows:

[0039] 201. Obtain the battery minimum temperature, battery maximum temperature, and battery charging status sent by the battery management system, the air conditioning working status and air conditioning circuit water temperature sent by the air conditioning system, and the real-time charger water temperature sent by the charger.

[0040] Among them, the implementation method of step 201 is the same as that of step 101, and can achieve the same technical effect and solve the same technical problem, so it will not be repeated here.

[0041] 202. Determine whether the battery meets the conditions for being heated by the charger based on the battery minimum temperature, the battery maximum temperature, the battery charging state, and the real-time water temperature of the charger.

[0042] In this step, after receiving the battery minimum temperature, battery maximum temperature, battery charging status and charger real-time water temperature, four conditions can be determined, namely: whether the battery minimum temperature is within the preset temperature range; whether the charger real-time water temperature is greater than the first specified value of the battery minimum temperature; whether the battery charging status is slow charging; whether the battery maximum temperature is less than the preset temperature threshold.

[0043] If all four of the above conditions are met simultaneously, that is, the battery minimum temperature is within the preset temperature range, the charger's real-time water temperature is greater than the first specified value of the battery minimum temperature, the battery charging state is slow charging, and the battery maximum temperature is less than the preset temperature threshold, then it can be determined that the battery meets the conditions for being heated by the charger. If these conditions are met, step 204 can be executed.

[0044] Since there is a preheating stage for heating the battery and air-conditioning circuit, the charger water temperature is not used for heating during the preheating stage. Therefore, the preset temperature range is located after the preheating stage. As an example, the preset temperature range can be 3 degrees to 8 degrees, or other reasonably set temperatures; the first specified value can be 5 degrees, or other reasonably set temperatures; the preset temperature threshold can be 35 degrees, or other reasonably set temperatures.

[0045] The real-time water temperature of the charger is greater than the first specified value of the minimum battery temperature. For example, if the first specified value is 5 degrees, the real-time water temperature of the charger may be 5 degrees higher than the minimum battery temperature.

[0046] 203. Determine whether the air conditioning circuit meets the conditions for heating by the charger based on the real-time water temperature of the charger, the water temperature of the air conditioning circuit, and the operating status of the air conditioning.

[0047] In this step, after determining the real-time water temperature of the charger, the water temperature of the air-conditioning circuit and the working status of the air-conditioning, it can be determined whether the air-conditioning circuit meets the conditions for heating by the charger based on the real-time water temperature of the charger, the water temperature of the air-conditioning circuit and the working status of the air-conditioning.

[0048] Specifically, two conditions may be determined: whether the real-time water temperature of the charger is greater than a second specified value of the water temperature of the air-conditioning circuit; and whether the working state of the air-conditioning is heating.

[0049] If both of the above conditions are met, that is, the real-time water temperature of the charger is greater than the second specified value of the water temperature of the air conditioning circuit, and the air conditioning is in heating mode, then the air conditioning circuit is determined to meet the conditions for heating by the charger. If the conditions are met, step 204 can be executed.

[0050] The second specified value may be 10 degrees, or other reasonably set temperatures.

[0051] The real-time water temperature of the charger is greater than the second specified value of the water temperature of the air-conditioning circuit. If the second specified value is 10 degrees, for example, the real-time water temperature of the charger may be 10 degrees higher than the water temperature of the air-conditioning circuit.

[0052] 204. The battery and air conditioning circuit are heated by the charger to achieve heating management of the electric vehicle.

[0053] Among them, some implementation methods of step 204 are the same as those of step 103, and can achieve the same technical effects and solve the same technical problems, and will not be repeated here.

[0054] In addition, after the battery and the air conditioning circuit are heated by the charger, it can also be determined whether a designated heater can be turned on or turned on with a delay to heat the battery and the air conditioning circuit, or whether the designated heater should not be turned on.

[0055] Detecting whether the heater can be turned on with a delay: when it is detected that the battery charging state is slow charging and the real-time water temperature of the charger is higher than the water temperature of the air-conditioning system water channel by a second specified value and the second water pump and the second three-way valve are turned on, it is determined that the specified heater can be turned on with a delay.

[0056] Detection shows that the heater can be turned on: When it is detected that the water temperature of the charger is always less than a third specified value within a preset time period, it is determined that the specified heater can be turned on. At this time, a heating request can be sent to the specified heater to use the specified heater to heat the air-conditioning circuit and the battery. In this way, it can be discovered in time that the water temperature of the charger is not high enough, so that the battery and the air-conditioning circuit can be heated in time by other methods when the water temperature is not high enough; if the real-time water temperature of the charger is 40 degrees, the specified heater can be turned off.

[0057] The third designated value may be 40 degrees, or other reasonably settable temperatures.

[0058] In addition, after heating the battery and air conditioning circuit, there will naturally be a time to stop heating.

[0059] Since the battery management system, air conditioning system, and charger all send data to the vehicle controller in real time, the vehicle controller can monitor the data sent by each system in real time.

[0060] When the vehicle controller detects that the battery minimum temperature is greater than the second specified value, or the battery minimum temperature is less than the fourth specified value, or the battery maximum temperature is greater than the third specified value, or the real-time water temperature of the charger is less than the fourth specified value of the battery minimum temperature, or the BMS charging status is not slow charging, it is determined that the battery meets the conditions for stopping heating, and the first water pump and the first three-way valve are closed to stop heating the battery through the charger.

[0061] At the same time, if the vehicle controller detects that the difference between the real-time water temperature of the charger and the water temperature of the air-conditioning circuit is less than the first specified value, or the air-conditioning working state is off, it is determined that the air-conditioning circuit meets the conditions for stopping heating, and the second water pump and the second three-way valve are closed to stop heating the air-conditioning circuit through the charger.

[0062] Furthermore, as a response to the above Figure 1In order to realize the method shown in the figure, the embodiment of the present invention also provides a heating management device for electric vehicles, which is used to Figure 1 This device embodiment corresponds to the aforementioned method embodiment. For ease of reading, this device embodiment will not describe the details of the aforementioned method embodiment one by one, but it should be clear that the device in this embodiment can implement all the contents of the aforementioned method embodiment. Figure 3 As shown, the device includes:

[0063] An acquisition unit 301 is configured to acquire the battery minimum temperature, battery maximum temperature, and battery charging status sent by the battery management system, the air conditioning operating status and air conditioning circuit water temperature sent by the air conditioning system, and the real-time charger water temperature sent by the charger;

[0064] a determining unit 302, configured to determine whether the battery meets a condition for being heated by the charger based on the battery minimum temperature, the battery maximum temperature, the battery charging state, and the real-time water temperature of the charger obtained by the obtaining unit 301, and to determine whether the air conditioning circuit meets a condition for being heated by the charger based on the real-time water temperature of the charger, the air conditioning circuit water temperature, and the air conditioning operating state obtained by the obtaining unit 301;

[0065] The heating unit 303 is configured to heat the battery and the air-conditioning circuit via the charger if the determining unit 302 determines that the conditions are met, so as to implement heating management of the electric vehicle.

[0066] Furthermore, as a response to the above Figure 2 In addition to the implementation of the method shown in the figure, the embodiment of the present invention also provides another heating management device for electric vehicles, which is used to Figure 2 This device embodiment corresponds to the aforementioned method embodiment. For ease of reading, this device embodiment will not describe the details of the aforementioned method embodiment one by one, but it should be clear that the device in this embodiment can implement all the contents of the aforementioned method embodiment. Figure 4 As shown, the device includes:

[0067] An acquisition unit 301 is configured to acquire the battery minimum temperature, battery maximum temperature, and battery charging status sent by the battery management system, the air conditioning operating status and air conditioning circuit water temperature sent by the air conditioning system, and the real-time charger water temperature sent by the charger;

[0068] a determining unit 302, configured to determine whether the battery meets a condition for being heated by the charger based on the battery minimum temperature, the battery maximum temperature, the battery charging state, and the real-time water temperature of the charger obtained by the obtaining unit 301, and to determine whether the air conditioning circuit meets a condition for being heated by the charger based on the real-time water temperature of the charger, the air conditioning circuit water temperature, and the air conditioning operating state obtained by the obtaining unit 301;

[0069] The heating unit 303 is configured to heat the battery and the air-conditioning circuit via the charger if the determining unit 302 determines that the conditions are met, so as to implement heating management of the electric vehicle.

[0070] In an optional implementation, the determining unit 302 includes:

[0071] A first determining module 3021 is configured to determine whether the battery minimum temperature is within a preset temperature range, whether the charger real-time water temperature is greater than a first specified value of the battery minimum temperature, whether the battery charging state is slow charging, and whether the battery maximum temperature is less than a preset temperature threshold;

[0072] The second determination module 3022 is used to determine that the battery meets the conditions for heating by the charger if the first determination module 3021 determines that the minimum temperature of the battery is within the preset temperature range, and the real-time water temperature of the charger is greater than the first specified value of the minimum temperature of the battery, and the battery charging state is slow charging, and the maximum temperature of the battery is less than the preset temperature threshold.

[0073] In another optional implementation, the determining unit 302 includes:

[0074] The third determining module 3023 is configured to determine whether the real-time water temperature of the charger is greater than a second specified value of the water temperature of the air conditioning circuit, and whether the air conditioning operating state is heating;

[0075] The fourth determination module 3024 is used to determine that the air conditioning circuit meets the conditions for heating by the charger if the third determination module 3023 determines that the real-time water temperature of the charger is greater than the second specified value of the water temperature of the air conditioning circuit and the air conditioning working state is heating.

[0076] In an optional embodiment, the heating unit 303 includes:

[0077] The first heating module 3031 is used to open the first water pump and the first three-way valve to heat the battery circuit with water from the charger when the charger is used to heat the battery.

[0078] The second heating module 3032 is used to open the second water pump and the second three-way valve when the air conditioning circuit is heated based on the charger, so as to heat the air conditioning circuit through the charger water.

[0079] In an optional embodiment, after the second heating module 3032 heats the battery and the air conditioning circuit through the charger, the device further includes a heating stop determination unit 304, and the heating stop determination unit 304 includes:

[0080] A first heating stop determination module 3041 is configured to determine whether the battery meets a heating stop condition based on the battery minimum temperature, the battery maximum temperature, the battery charging state, and the real-time charger water temperature; and to determine whether the air conditioning circuit meets a heating stop condition based on the real-time charger water temperature, the air conditioning circuit water temperature, and the air conditioning operating state;

[0081] The second heating stop determination module 3042 is configured to stop heating the battery and the air conditioning circuit by the charger if the first heating stop determination module 3041 determines that the conditions are met.

[0082] In an optional implementation manner, the first heating stop determination module 3041 is specifically configured to:

[0083] If it is determined that the battery minimum temperature is greater than the second specified value, or the battery minimum temperature is less than the fourth specified value, or the battery maximum temperature is greater than the third specified value, or the charger real-time water temperature is less than the fourth specified value of the battery minimum temperature, or the BMS charging state is not slow charging, it is determined that the battery meets the heating stop condition, and the first water pump and the first three-way valve are closed to stop the charger from heating the battery;

[0084] If it is determined that the difference between the real-time water temperature of the charger and the water temperature of the air-conditioning circuit is less than the first specified value, or the air-conditioning working state is off, it is determined that the air-conditioning circuit meets the conditions for stopping heating, and the second water pump and the second three-way valve are closed to stop heating the air-conditioning circuit through the charger.

[0085] In an optional embodiment, after the heating unit 303 heats the battery and the air conditioning circuit through the charger, the device further includes a temperature determination unit 305, and the temperature determination unit 305 includes:

[0086] The temperature determination module 3051 is used to detect whether the water temperature of the charger is less than a third specified value within a preset time period;

[0087] The request sending module 3052 is configured to send a heating request to the designated heater if the temperature determining module 3051 determines that the temperature is yes, so as to use the designated heater to heat the air conditioning circuit and the battery.

[0088] Furthermore, an embodiment of the present invention further provides a storage medium for storing a computer program, wherein when the computer program is running, the device where the storage medium is located is controlled to execute the above Figure 1-2 The heating management method of the electric vehicle described in.

[0089] Furthermore, an embodiment of the present invention further provides a processor, which is used to run a program, wherein the program executes the above-mentioned Figure 1-2 The heating management method of the electric vehicle described in.

[0090] In the above embodiments, the description of each embodiment has its own focus. For parts that are not described in detail in a certain embodiment, reference can be made to the relevant descriptions of other embodiments.

[0091] It is understood that the relevant features of the above methods and devices can be referenced to each other. In addition, the terms "first" and "second" in the above embodiments are used to distinguish between the embodiments, and do not represent the advantages and disadvantages of the embodiments.

[0092] Those skilled in the art will clearly understand that, for the convenience and brevity of description, the specific working processes of the systems, devices and units described above can refer to the corresponding processes in the aforementioned method embodiments and will not be repeated here.

[0093] The algorithm and display provided herein are not inherently related to any particular computer, virtual system or other device. Various general-purpose systems can also be used together with the teachings based on this. According to the above description, it is obvious that the structure required for constructing this type of system. In addition, the present invention is not directed to any specific programming language. It should be understood that various programming languages can be utilized to realize the content of the present invention described herein, and the above description of specific languages is for the purpose of disclosing the best mode of the present invention.

[0094] In addition, the memory may include non-permanent memory in a computer-readable medium, random access memory (RAM) and / or non-volatile memory in the form of read-only memory (ROM) or flash RAM, and the memory includes at least one memory chip.

[0095] Those skilled in the art will appreciate that the embodiments of the present application can be provided as methods, systems, or computer program products. Therefore, the present application can adopt the form of a complete hardware embodiment, a complete software embodiment, or an embodiment in combination with software and hardware. Moreover, the present application can adopt the form of a computer program product implemented on one or more computer-usable storage media (including but not limited to magnetic disk storage, CD-ROM, optical storage, etc.) that contain computer-usable program code.

[0096] The present application is described with reference to the flowcharts and / or block diagrams of the methods, devices (systems), and computer program products according to the embodiments of the present application. It should be understood that each process and / or box in the flowchart and / or block diagram, as well as the combination of the processes and / or boxes in the flowchart and / or block diagram, can be implemented by computer program instructions. These computer program instructions can be provided to a processor of a general-purpose computer, a special-purpose computer, an embedded processor, or other programmable data processing device to produce a machine, so that the instructions executed by the processor of the computer or other programmable data processing device generate instructions for implementing the steps in the process. Figure 1 a process or multiple processes and / or boxes Figure 1 A device that provides the functions specified in a block or multiple blocks.

[0097] These computer program instructions may also be stored in a computer readable memory that can direct a computer or other programmable data processing device to work in a specific manner, so that the instructions stored in the computer readable memory produce an article of manufacture comprising an instruction device, which implements the process Figure 1 a process or multiple processes and / or boxes Figure 1 The function specified in one or more boxes.

[0098] These computer program instructions can also be loaded onto a computer or other programmable data processing device so that a series of operational steps are executed on the computer or other programmable device to produce a computer-implemented process, thereby providing the instructions executed on the computer or other programmable device for implementing the process. Figure 1 a process or multiple processes and / or boxes Figure 1 A step that specifies a function in one or more boxes.

[0099] In a typical configuration, a computing device includes one or more processors (CPUs), input / output interfaces, network interfaces, and memory.

[0100] The memory may include non-permanent memory in a computer-readable medium, random access memory (RAM) and / or non-volatile memory in the form of read-only memory (ROM) or flash RAM. The memory is an example of a computer-readable medium.

[0101] Computer-readable media includes permanent and non-permanent, removable and non-removable media that can be implemented by any method or technology to store information. The information can be computer-readable instructions, data structures, program modules or other data. Examples of computer storage media include, but are not limited to, phase change memory (PRAM), static random access memory (SRAM), dynamic random access memory (DRAM), other types of random access memory (RAM), read-only memory (ROM), electrically erasable programmable read-only memory (EEPROM), flash memory or other memory technology, compact disc read-only memory (CD-ROM), digital versatile disc (DVD) or other optical storage, magnetic cassettes, magnetic tape, magnetic disk storage or other magnetic storage devices or any other non-transmission media that can be used to store information that can be accessed by a computing device. As defined herein, computer-readable media does not include transitory computer-readable media (transitory media), such as modulated data signals and carrier waves.

[0102] It should also be noted that the terms "comprises," "includes," or any other variations thereof are intended to encompass non-exclusive inclusion, such that a process, method, commodity, or apparatus that includes a series of elements includes not only those elements but also other elements not explicitly listed, or includes elements inherent to such process, method, commodity, or apparatus. In the absence of further limitations, an element defined by the phrase "comprises a ..." does not exclude the presence of other identical elements in the process, method, commodity, or apparatus that includes the element.

[0103] Those skilled in the art will appreciate that the embodiments of the present application may be provided as methods, systems, or computer program products. Therefore, the present application may take the form of a complete hardware embodiment, a complete software embodiment, or an embodiment combining software and hardware. Furthermore, the present application may take the form of a computer program product implemented on one or more computer-usable storage media (including but not limited to magnetic disk storage, CD-ROM, optical storage, etc.) containing computer-usable program code.

[0104] The above are merely embodiments of the present application and are not intended to limit the present application. For those skilled in the art, the present application may have various changes and variations. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present application should all be included within the scope of the claims of the present application.

Claims

1. A heating management method for an electric vehicle, characterized in that: The method comprises: Obtain the battery minimum temperature, battery maximum temperature, and battery charging status sent by the battery management system, the air conditioning working status and air conditioning circuit water temperature sent by the air conditioning system, and the real-time charger water temperature sent by the charger; determining whether the battery meets the conditions for being heated by the charger based on the minimum battery temperature, the maximum battery temperature, the battery charging state, and the real-time water temperature of the charger; and determining whether the air conditioning circuit meets the conditions for being heated by the charger based on the real-time water temperature of the charger, the water temperature of the air conditioning circuit, and the air conditioning operating state; If the conditions are met, the battery and air conditioning circuit are heated by the charger to achieve heating management of the electric vehicle; Determining whether the battery meets the conditions for being heated by the charger based on the battery minimum temperature, the battery maximum temperature, the battery charging state, and the real-time water temperature of the charger includes: Determine whether the battery minimum temperature is within a preset temperature range, whether the charger real-time water temperature is greater than a first specified value of the battery minimum temperature, whether the battery charging state is slow charging, and whether the battery maximum temperature is less than a preset temperature threshold; If the battery minimum temperature is within a preset temperature range, the real-time water temperature of the charger is greater than a first specified value of the battery minimum temperature, the battery charging state is slow charging, and the battery maximum temperature is less than a preset temperature threshold, then it is determined that the battery meets the conditions for being heated by the charger; Determining whether the air conditioning circuit meets the conditions for being heated by the charger based on the real-time water temperature of the charger, the water temperature of the air conditioning circuit, and the operating state of the air conditioner includes: determining whether the real-time water temperature of the charger is greater than a second specified value of the water temperature of the air conditioning circuit, and whether the air conditioning operating state is heating; If the real-time water temperature of the charger is greater than the second specified value of the water temperature of the air conditioning circuit, and the air conditioning operating state is heating, then it is determined that the air conditioning circuit meets the conditions for heating by the charger; The battery and air conditioning circuit are heated by the charger, including: When the battery is heated by the charger, the first water pump and the first three-way valve are turned on to heat the battery circuit through the charger water, thereby heating the battery; When the air conditioning circuit is heated by the charger, the second water pump and the second three-way valve are opened to heat the air conditioning circuit by the charger water.

2. The method according to claim 1, characterized in that After heating the battery and the air conditioning circuit by the charger, the method further includes: Determine whether the battery meets the conditions for stopping heating based on the battery's minimum temperature, maximum temperature, battery charging status, and real-time charger water temperature. Determine whether the air conditioning circuit meets the conditions for stopping heating based on real-time charger water temperature, air conditioning circuit water temperature, and air conditioning operating status. If the conditions are met, the charger will stop heating the battery and air conditioning circuit.

3. The method according to claim 2, characterized in that Determine whether the battery meets the conditions for stopping heating based on the battery's minimum temperature, maximum temperature, battery charging status, and real-time charger water temperature. Determine whether the air conditioning circuit meets the conditions for stopping heating based on real-time charger water temperature, air conditioning circuit water temperature, and air conditioning operating status, including: If it is determined that the battery minimum temperature is greater than the second specified value, or the battery minimum temperature is less than the fourth specified value, or the battery maximum temperature is greater than the third specified value, or the charger real-time water temperature is less than the fourth specified value of the battery minimum temperature, or the BMS charging state is not slow charging, it is determined that the battery meets the heating stop condition, and the first water pump and the first three-way valve are closed to stop the charger from heating the battery; If it is determined that the difference between the real-time water temperature of the charger and the water temperature of the air-conditioning circuit is less than the first specified value, or the air-conditioning working state is off, it is determined that the air-conditioning circuit meets the conditions for stopping heating, and the second water pump and the second three-way valve are closed to stop heating the air-conditioning circuit through the charger.

4. The method according to claim 1, wherein After heating the battery and the air conditioning circuit by the charger, the method further includes: detecting whether the water temperature of the charger is less than a third specified value within a preset time period; If so, a heating request is sent to the designated heater to heat the air conditioning circuit and the battery using the designated heater.

5. A heating management device for an electric vehicle, adopting the heating management method for an electric vehicle according to any one of claims 1 to 4, characterized in that: The device comprises: An acquisition unit is used to obtain the battery minimum temperature, battery maximum temperature, and battery charging status sent by the battery management system, the air conditioning working status and air conditioning circuit water temperature sent by the air conditioning system, and the real-time charger water temperature sent by the charger; a determining unit, configured to determine whether the battery meets a condition for being heated by the charger based on the battery minimum temperature, the battery maximum temperature, the battery charging state, and the real-time water temperature of the charger obtained by the obtaining unit, and to determine whether the air-conditioning circuit meets a condition for being heated by the charger based on the real-time water temperature of the charger, the air-conditioning circuit water temperature, and the air-conditioning operating state obtained by the obtaining unit; The heating unit is used to heat the battery and the air-conditioning circuit through the charger if the determining unit determines that the conditions are met, so as to realize heating management of the electric vehicle.

6. A storage medium, characterized in that The storage medium includes a stored program, wherein when the program is running, the device where the storage medium is located is controlled to execute the heating management method for an electric vehicle according to any one of claims 1 to 4.

7. A processor, characterized in that: The processor is used to run a program, wherein the program executes the heating management method for an electric vehicle according to any one of claims 1 to 4 when running.

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