Fuel cell vehicle battery temperature control method, system, and fuel cell vehicle

Abstract

The application provides a fuel cell vehicle battery heat preservation control method, system and fuel cell vehicle. The vehicle battery comprises a fuel cell and an energy storage battery, and the energy storage battery is used for storing electric energy generated by the fuel cell and providing energy for the vehicle. When the vehicle is in a driving state, if the destination environment temperature of the vehicle is lower than an environment temperature threshold and the planned parking time length is less than a time length threshold, the power supply proportion of the energy storage battery and the fuel cell to the vehicle is adjusted, so that the electric quantity of the energy storage battery reaches a preset electric quantity value; the fuel cell is started or stopped according to the temperature of the fuel cell and the energy storage battery; the electric energy generated by the fuel cell is used for charging the energy storage battery, and the heat generated by the fuel cell is used for heating and preserving the fuel cell and the energy storage battery, so that the normal energy output capacity of the fuel cell and the energy storage battery is maintained, and the fuel cell and the energy storage battery can meet the required energy of the vehicle when the vehicle starts in a low-temperature environment.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of vehicle battery control, in particular to a fuel cell vehicle battery temperature control method, system and fuel cell vehicle. BACKGROUND

[0002] The power source of a fuel cell vehicle includes a fuel cell and an energy storage battery. The energy storage battery can store the electric energy generated by the fuel cell, store the electric energy recovered by the vehicle, and provide energy for the vehicle together with the fuel cell. When the vehicle is parked in a low-temperature environment, the temperature of the fuel cell and the energy storage battery decreases so that the performance decreases. When the vehicle needs to start, the fuel cell and the energy storage battery cannot provide enough energy for the vehicle, resulting in slow vehicle starting and affecting user experience. SUMMARY

[0003] The present application provides a fuel cell vehicle battery temperature control method, system and fuel cell vehicle, which can improve the starting performance of the vehicle in a low-temperature environment.

[0004] The present application provides a fuel cell vehicle battery temperature control method. The vehicle battery includes a fuel cell and an energy storage battery connected by an electric connection. The energy storage battery is used to store the electric energy generated by the fuel cell and provide energy for the vehicle. The vehicle battery temperature control method includes:

[0005] When the vehicle is in a running state, if the destination environment temperature of the vehicle is lower than an environment temperature threshold and the planned parking time is less than a time threshold, the power supply proportion of the energy storage battery and the fuel cell to the vehicle is adjusted so that the electric quantity of the energy storage battery reaches a preset electric quantity value. The planned parking time is the time that the vehicle is expected to be parked at the destination.

[0006] When the vehicle reaches the destination and is in a parking state, the temperature of the fuel cell and the temperature of the energy storage battery are obtained.

[0007] If the temperature of the fuel cell is lower than a first battery temperature threshold and / or the temperature of the energy storage battery is lower than a second battery temperature threshold, the fuel cell is started to run. The electric energy generated by the running of the fuel cell is used to charge the energy storage battery, and the heat generated by the running of the fuel cell is used to heat and keep warm the fuel cell and the energy storage battery.

[0008] Optionally, the fuel cell includes a first pipeline, the energy storage battery includes a second pipeline, the first pipeline and the second pipeline are used to accommodate a heat-conducting medium flowing therein, and the first pipeline and the second pipeline are connected by a switch valve. The fuel cell vehicle battery temperature control method includes:

[0009] If the temperature of the fuel cell is lower than a first cell temperature threshold and / or the temperature of the energy storage cell is lower than a second cell temperature threshold, the switch valve is controlled to open, so that the first pipeline and the second pipeline are communicated.

[0010] Optionally, the fuel cell vehicle battery temperature control method comprises:

[0011] If the temperature of the fuel cell is higher than a third cell temperature threshold and / or the temperature of the energy storage cell is higher than a fourth cell temperature threshold, the fuel cell is controlled to stop running; the third cell temperature threshold is greater than the first cell temperature threshold; and the fourth cell temperature threshold is greater than the second cell temperature threshold.

[0012] Optionally, the adjusting the power supply proportion of the energy storage cell and the fuel cell to the vehicle so that the electric quantity of the energy storage cell reaches a preset electric quantity value comprises:

[0013] determining a start-stop number of the fuel cell within the planned parking time length, a single power generation quantity of the fuel cell each time the fuel cell starts and stops, and an initial cooling time length; the initial cooling time length comprises a first initial cooling time length and a second initial cooling time length, the first initial cooling time length being a time length for the fuel cell to decrease from an initial temperature to the first cell temperature threshold, and the second initial cooling time length being a time length for the energy storage cell to decrease from the initial temperature to the second cell temperature threshold; the initial temperature being a temperature of the fuel cell and the energy storage cell when the vehicle reaches the destination;

[0014] determining a required chargeable capacity according to the start-stop number, the single power generation quantity, and the initial cooling time length;

[0015] the required chargeable capacity being a chargeable capacity that the energy storage cell can provide within the planned parking time length;

[0016] adjusting the power supply proportion of the energy storage cell and the fuel cell to the vehicle so that the electric quantity of the energy storage cell reaches a preset electric quantity value according to the required chargeable capacity.

[0017] Optionally, the determining the start-stop number of the fuel cell within the planned parking time length, the single power generation quantity of the fuel cell each time the fuel cell starts and stops, and the initial cooling time length comprises:

[0018] determining a first temperature rising value of the fuel cell from the first cell temperature threshold to the third cell temperature threshold;

[0019] determining a second temperature rising value of the energy storage cell from the second cell temperature threshold to the fourth cell temperature threshold;

[0020] determine the single power generation amount of the fuel cell according to the destination environment temperature, the first temperature rising value or the second temperature rising value.

[0021] Optionally, the determining the start-stop times of the fuel cell in the planned parking time, the single power generation amount of the fuel cell each time the fuel cell starts and stops, and the initial temperature falling time comprises:

[0022] determining a first temperature rising time of the fuel cell from the first battery temperature threshold to the third battery temperature threshold;

[0023] determining a first temperature falling time of the fuel cell from the third battery temperature threshold to the first battery temperature threshold;

[0024] determining a second temperature rising time of the energy storage battery from the second battery temperature threshold to the fourth battery temperature threshold;

[0025] determining a second temperature falling time of the energy storage battery from the fourth battery temperature threshold to the second battery temperature threshold;

[0026] determining a single start-stop time of the fuel cell according to the first temperature rising time or the second temperature rising time, the first temperature falling time or the second temperature falling time;

[0027] determining the start-stop times of the fuel cell according to the planned parking time, the single start-stop time and the initial temperature falling time.

[0028] Optionally, the start-stop times are in a functional relationship with the planned parking time, the single start-stop time and the initial temperature falling time.

[0029] The application provides a computer readable storage medium, which stores a computer program, and the program is executed by a processor to implement the fuel vehicle battery temperature control method according to any one of the above.

[0030] The application provides a fuel cell vehicle battery temperature control system, which comprises one or more processors for executing the fuel cell vehicle battery temperature control method according to any one of the above.

[0031] The application further provides a fuel cell vehicle, which comprises:

[0032] a fuel cell;

[0033] an energy storage battery, which is electrically connected to the fuel cell and is used for storing the electric energy generated by the fuel cell and providing energy for the vehicle; and

[0034] a fuel cell vehicle battery temperature control system according to any one of the above, which is electrically connected to the fuel cell and the energy storage battery.

[0035] In some embodiments, if the destination environment temperature of the vehicle is lower than an environment temperature threshold and the planned parking duration is less than a duration threshold, the proportion of power supply to the vehicle from the energy storage battery and the fuel cell is adjusted so that the power of the energy storage battery reaches a preset power value; when the vehicle reaches the destination and is in a parking state, if the temperature of the fuel cell is lower than a first cell temperature threshold and / or the temperature of the energy storage battery is lower than a second cell temperature threshold, the fuel cell is started to operate, the energy storage battery is charged, and the fuel cell is heated and kept warm by the heat generated by the operation of the fuel cell, so that the temperature of the fuel cell and the energy storage battery is maintained above the preset threshold, thus maintaining their normal energy output capacity and ensuring the energy required for starting the vehicle.

[0036] It should be understood that the general description above and the following detailed description are only exemplary and explanatory, and are not limiting to the present application. BRIEF DESCRIPTION OF DRAWINGS

[0037] The accompanying drawings, which are incorporated herein and constitute part of this specification, illustrate embodiments consistent with the application and serve to explain the principles of the application.

[0038] Figure 1 A structural block diagram of one embodiment of the fuel cell vehicle of the present application is shown.

[0039] Figure 2 A flow chart of one embodiment of the fuel cell vehicle battery temperature control method of the present application is shown.

[0040] Figure 3 A fuel cell vehicle battery temperature control system provided by the present application is shown. DETAILED DESCRIPTION

[0041] The exemplary embodiments will be described in detail herein with reference to the attached drawings. The description of the exemplary embodiments is only exemplary and explanatory, and is not limiting to the present application. The following exemplary embodiments described in the following detailed description are not representative of all embodiments consistent with the present application. Rather, they are merely examples of apparatuses and methods consistent with some aspects of the present application as detailed in the appended claims.

[0042] The terminology used in the present application is for the purpose of describing particular embodiments only and is not intended to be limiting of the present application. Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which the application belongs. The articles "a", "an", and "the" as used herein are to be construed to mean "at least one" or "one or more", unless otherwise indicated to the contrary. As used herein, the terms "first", "second", and the like do not imply any order, quantity, or importance, but are used to distinguish one element from another. Also, the terms "one", "another", and the like do not preclude the existence of more than one, unless otherwise indicated to the contrary. As used herein, the terms "front", "back", "upper", and / or "lower" are used for convenience with reference to the orientation of the figures and are not to be construed as limiting. As used herein, the terms "include", "includes" and / or "including" are to be construed as to mean "comprising", "comprises" and / or "comprising", respectively, unless otherwise indicated to the contrary. As used herein, the term "connect" or "connected" is not restricted to physical or mechanical connections or associations, but can include electrical connections, whether direct or indirect.

[0043] The terminology used in the present application is for the purpose of describing particular embodiments only and is not intended to be limiting of the present application. As used in the present application and the appended claims, the singular forms "a", "an" and "the" are intended to include the plural forms as well, unless the context clearly indicates otherwise. It will be further understood that the terms "and / or", as used herein, refers to and encompasses any and all possible combinations of one or more of the associated listed items.

[0044] The fuel cell vehicle battery temperature control method of the embodiments of the present application includes: when the vehicle is in a driving state, if the destination environment temperature of the vehicle is lower than an environment temperature threshold value and the planned parking time length is less than a maximum time length threshold value, adjusting the power supply proportion of the energy storage battery and the fuel cell to the vehicle, so that the electric quantity of the energy storage battery reaches a preset electric quantity value; the planned parking time length is the time length that the vehicle is expected to be parked at the destination; when the vehicle arrives at the destination and is in a parking state, obtaining the temperature of the fuel cell and the temperature of the energy storage battery; if the temperature of the fuel cell is lower than a first battery temperature threshold value and / or the temperature of the energy storage battery is lower than a second battery temperature threshold value, starting the fuel cell to run, so as to charge the energy storage battery with the electric energy generated by the fuel cell running, and heat and keep warm the fuel cell and the energy storage battery with the heat generated by the fuel cell running. In this way, when the fuel cell vehicle is in a low-temperature environment, the temperatures of the fuel cell and the energy storage battery can be maintained above the preset threshold values, so that their normal energy output capabilities are maintained, and the fuel cell and the energy storage battery can meet the energy required by the vehicle when the vehicle starts.

[0045] The application provides a fuel cell vehicle battery temperature control method, a system and a fuel cell vehicle. The fuel cell vehicle battery temperature control method, the system and the fuel cell vehicle of the application are described in detail below with reference to the accompanying drawings. The features in the following embodiments and implementation manners can be combined with each other without conflict.

[0046] Figure 1 Fig. 1 shows a structural block diagram of one embodiment of the fuel cell vehicle of the application. As shown in Fig. 1, the fuel cell vehicle comprises a vehicle battery. The vehicle battery comprises a fuel cell 11 and an energy storage battery 12. The fuel cell 11 generates electric energy by chemical reaction inside the fuel cell 11, and supplies power to the vehicle. The fuel cell 11 generates heat while generating electric energy. The energy storage battery 12 is electrically connected to the fuel cell 11, and is used to store the electric energy generated by the fuel cell 11 and provide energy to the vehicle. The energy storage battery 12 has a charging capacity and a discharging capacity. The energy storage battery 12 can receive the electric energy generated by the fuel cell 11 and store the electric energy. The energy storage battery 12 is also used to store the electric energy recovered from the vehicle. When the vehicle is running, the energy storage battery 12 can supply power to the vehicle together with the fuel cell 11. Figure 1

[0047] The fuel cell vehicle further comprises a fuel cell vehicle battery temperature control system 13 electrically connected to the fuel cell 11 and the energy storage battery 12, and used to control the fuel cell 11 and the energy storage battery 12.

[0048] The fuel cell 11 comprises a first pipeline 14, and the energy storage battery 12 comprises a second pipeline 15. The first pipeline 14 and the second pipeline 15 are used to accommodate a heat-conducting medium flowing therein. When the fuel cell 11 generates electric energy and the energy storage battery 12 generates heat, the heat-conducting medium flows in the first pipeline 14 and the second pipeline 15, so as to cool the fuel cell 11 and the energy storage battery 12, and avoid the fuel cell 11 and the energy storage battery 12 from being overheated. The first pipeline 14 and the second pipeline 15 are connected through a switch valve 16. When the switch valve 16 is opened, the first pipeline 14 and the second pipeline 15 are communicated, and the heat-conducting medium in the first pipeline 14 and the second pipeline 15 can flow into each other. When the switch valve 16 is closed, the first pipeline 14 and the second pipeline 15 are disconnected, and the heat-conducting medium in the first pipeline 14 and the second pipeline 15 cannot flow into each other. The fuel cell vehicle battery temperature control system 13 is electrically connected to the switch valve 16, and used to control the switch valve 16 to be opened or closed.

[0049] Figure 2 Fig. 2 shows a flow chart of one embodiment of the fuel cell vehicle battery temperature control method of the application.

[0050] The fuel cell vehicle battery temperature control method comprises steps 21-23.

[0051] ​Step 21, when the vehicle is in a driving state, if the destination environment temperature of the vehicle is lower than the environment temperature threshold and the planned parking time length is less than the time length threshold, adjust the power supply proportion of the energy storage battery 12 and the fuel cell 11 to the vehicle, so that the electric quantity of the energy storage battery 12 reaches a preset electric quantity value.

[0052] The destination environment temperature of the vehicle is the environment temperature of the destination where the vehicle plans to arrive. According to the navigation path of the vehicle, the destination of the vehicle and the destination environment temperature are obtained. If the destination environment temperature is lower than the environment temperature threshold, the vehicle needs to be heated and kept warm after arriving at the destination and parking when the temperature of the fuel cell 11 and / or the energy storage battery 12 drops below the preset threshold.

[0053] The planned parking time length is the time length that the vehicle is expected to park at the destination. The planned parking time length can be customized by the user of the vehicle. If the planned parking time length is greater than the time length threshold, it means that the vehicle has a too long parking time length after arriving at the destination, and considering energy efficiency, the fuel cell 11 and the energy storage battery 12 are not kept warm.

[0054] When the vehicle is in a driving state, if the destination environment temperature of the vehicle is lower than the environment temperature threshold and the planned parking time length is less than the time length threshold, adjust the power supply proportion of the energy storage battery 12 and the fuel cell 11 to the vehicle, so that the electric quantity of the energy storage battery 12 reaches a preset electric quantity value. Control the energy storage battery 12 to supply power to the vehicle, consume the electric energy of the energy storage battery 12 as much as possible and reduce the fuel consumption of the fuel cell 11, and increase the chargeable capacity of the energy storage battery 12.

[0055] Step 22, when the vehicle arrives at the destination and is in a parking state, obtain the temperature of the fuel cell 11 and the temperature of the energy storage battery 12.

[0056] After the vehicle is parked, the temperature of the fuel cell 11 and the temperature of the energy storage battery 12 are monitored in real time to determine when to keep the fuel cell 11 and the energy storage battery 12 warm.

[0057] Step 23, if the temperature of the fuel cell 11 is lower than the first battery temperature threshold and / or the temperature of the energy storage battery 12 is lower than the second battery temperature threshold, start the fuel cell 11 to run, charge the energy storage battery 12 with the electric energy generated by the running of the fuel cell 11, and heat and keep warm the fuel cell 11 and the energy storage battery 12 with the heat generated by the running of the fuel cell 11. The first battery temperature threshold and the second battery temperature threshold can be equal or not equal.

[0058] In some embodiments, if the destination environment temperature of the vehicle is lower than the environment temperature threshold and the planned parking duration is less than the duration threshold, the power supply proportion of the energy storage battery 12 and the fuel cell 11 to the vehicle is adjusted to increase the chargeable capacity of the energy storage battery 12; when the vehicle reaches the destination and is in a parking state, if the temperature of the fuel cell 11 is lower than the first battery temperature threshold and / or the temperature of the energy storage battery 12 is lower than the second battery temperature threshold, the fuel cell 11 is started to operate to charge the energy storage battery 12, and the heat generated by the operation of the fuel cell 11 is used to heat the fuel cell 11 and the energy storage battery 12, so that the temperature of the fuel cell 11 and the energy storage battery 12 can be increased, thereby increasing the temperature of the fuel cell 11 and the energy storage battery 12 when the temperature of the fuel cell 11 is too low, and ensuring the energy required when the vehicle starts.

[0059] The fuel cell vehicle battery temperature control method comprises: if the temperature of the fuel cell 11 is lower than the first battery temperature threshold and / or the temperature of the energy storage battery 12 is lower than the second battery temperature threshold, the switch valve 16 is controlled to be opened to make the first pipeline 14 and the second pipeline 15 communicate.

[0060] If the temperature of the fuel cell 11 and / or the energy storage battery 12 is too low and needs to be kept warm, on the basis of step 23, the switch valve 16 is controlled to be opened to make the first pipeline 14 and the second pipeline 15 communicate, and the heat-conducting medium in the first pipeline 14 and the second pipeline 15 can flow into each other, so that the heat generated by the power generation of the fuel cell 11 is transmitted to the energy storage battery 12 through the heat-conducting medium to increase the temperature of the energy storage battery 12.

[0061] The fuel cell vehicle battery temperature control method comprises: if the temperature of the fuel cell 11 is higher than the third battery temperature threshold and / or the temperature of the energy storage battery 12 is higher than the fourth battery temperature threshold, the fuel cell 11 is controlled to stop operating.

[0062] The third battery temperature threshold is greater than the first battery temperature threshold, and the fourth battery temperature threshold is greater than the second battery temperature threshold. If the temperature of the fuel cell 11 is higher than the third battery temperature threshold and / or the temperature of the energy storage battery 12 is higher than the fourth battery temperature threshold, it indicates that the temperature of the fuel cell 11 and / or the energy storage battery 12 has reached the requirement, and it is not necessary to continue to keep warm, so the fuel cell 11 is controlled to stop operating. The temperature of the fuel cell 11 and the energy storage battery 12 is continuously monitored, and if the temperature of the fuel cell 11 is lower than the first battery temperature threshold and / or the temperature of the energy storage battery 12 is lower than the second battery temperature threshold, the fuel cell 11 is started again to operate and charge the energy storage battery 12.

[0063] In step 21, the power supply proportion of the energy storage battery 12 and the fuel cell 11 to the vehicle is adjusted, so that the electricity of the energy storage battery 12 reaches the preset electricity value, including: determining the number of start-stop of the fuel cell 11 in the planned parking time, the single power generation of the fuel cell 11 each time of start-stop, and the initial cooling time; determining the required chargeable capacity according to the number of start-stop, the single power generation and the initial cooling time; and adjusting the power supply proportion of the energy storage battery 12 and the fuel cell 11 to the vehicle according to the required chargeable capacity, so that the electricity of the energy storage battery 12 reaches the preset electricity value.

[0064] The initial cooling time includes a first initial cooling time and a second initial cooling time, the first initial cooling time is a time for the fuel cell 11 to be cooled from the initial temperature to the first battery temperature threshold, and the second initial cooling time is a time for the energy storage battery 12 to be cooled from the initial temperature to the second battery temperature threshold. The initial temperature is the temperature of the fuel cell 11 and the energy storage battery 12 when the vehicle reaches the destination (at the initial time).

[0065] The required chargeable capacity is the chargeable capacity that can be provided by the energy storage battery 12 in the planned parking time.

[0066] After the vehicle is parked, the temperature of the fuel cell 11 and the energy storage battery 12 decreases to the first battery temperature threshold and the second battery temperature threshold which need to be kept warm after the initial cooling time. In the planned parking time of the vehicle, the fuel cell 11 can be started multiple times, and the fuel cell 11 and the energy storage battery 12 are kept warm. Before the vehicle is parked, the required chargeable capacity of the energy storage battery 12 needs to be determined. The required chargeable capacity is determined by the number of start-stop of the fuel cell 11, the single power generation of each start-stop, and the initial cooling time of the vehicle in the planned parking time.

[0067] The fuel cell vehicle battery warm-up control method further includes: determining a first temperature rising value of the fuel cell 11 from the first battery temperature threshold to a third battery temperature threshold; determining a second temperature rising value of the energy storage battery 12 from the second battery temperature threshold to a fourth battery temperature threshold; and determining the single power generation of the fuel cell 11 according to the destination environment temperature, the first temperature rising value or the second temperature rising value.

[0068] The single power generation of the fuel cell 11 each time of start-stop needs to meet the temperature rising of the fuel cell 11 to the first battery temperature threshold or the temperature rising of the energy storage battery 12 to the second battery temperature threshold. The single power generation is determined by the destination environment temperature, the first temperature rising value or the second temperature rising value. The lower the destination environment temperature is, the higher the first temperature rising value or the second temperature rising value is, and the larger the single power generation is.

[0069] The fuel cell vehicle battery temperature control method further includes: determining a first temperature rising duration of the fuel cell 11 from the first battery temperature threshold to the third battery temperature threshold; determining a first temperature falling duration of the fuel cell 11 from the third battery temperature threshold to the first battery temperature threshold; determining a second temperature rising duration of the energy storage battery 12 from the second battery temperature threshold to the fourth battery temperature threshold; determining a second temperature falling duration of the energy storage battery 12 from the fourth battery temperature threshold to the second battery temperature threshold; determining a single start-stop duration of the fuel cell 11 according to the first temperature rising duration or the second temperature rising duration, the first temperature falling duration or the second temperature falling duration; and determining a start-stop number of the fuel cell 11 according to the planned parking duration, the single start-stop duration and the initial temperature falling duration.

[0070] The single start-stop duration of the fuel cell 11 is determined by a duration required by a temperature rising process of the fuel cell 11 or the energy storage battery 12 or a duration required by a temperature falling process. Specifically, the first temperature rising duration, the first temperature falling duration, the second temperature rising duration and the second temperature falling duration are determined by the destination environment temperature, the capacity of the battery and the like, which are not limited herein. The start-stop number of the fuel cell 11 is determined by the single start-stop duration, the planned parking duration and the initial temperature falling duration. In some embodiments, the start-stop number is in a functional relationship with the planned parking duration, the single start-stop duration and the initial temperature falling duration.

[0071] Figure 3 The fuel cell vehicle battery temperature control system 13 provided by the present application is shown, which includes one or more processors 31 for implementing the fuel cell vehicle battery temperature control method as described above. The above-mentioned embodiments can be implemented by software, or by hardware or a combination of software and hardware.

[0072] In some embodiments, the fuel cell vehicle battery temperature control system 13 can include a computer readable storage medium 32, which can store programs that can be invoked by the processor 31, and can include a non-volatile storage medium. In some embodiments, the fuel cell vehicle battery temperature control system 13 can include a memory 33 and an interface 34. In some embodiments, the fuel cell vehicle battery temperature control system 13 can further include other hardware according to actual application.

[0073] The application also provides a computer readable storage medium, which stores a computer program, and the program is executed by a processor to implement the fuel cell vehicle battery heat preservation control method as described above. The computer readable medium includes permanent and non-permanent, removable and non-removable media, which can be realized 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 technologies, compact disc read-only memory (CD-ROM), digital versatile disc (DVD) or other optical storage, magnetic cassette, magnetic tape, magnetic disk storage or other magnetic storage devices, or any other non-transmission medium that can be used to store information that can be accessed by a computing device.

[0074] Other embodiments of the application will be apparent to those skilled in the art from consideration of the specification and practice of the application disclosed herein. It is intended that the application be limited only by the scope of the claims, which will be readily appreciated by those skilled in the art. The specification and examples are illustrative only and not intended to be limiting.

[0075] It is to be understood that the application is not limited to the precise construction described and as shown in the attached drawings, and that various modifications and changes can be made by those skilled in the art without departing from the scope of the application. The scope of the application is to be defined by the claims appended hereto.

Claims

1. A fuel cell vehicle battery thermal retention control method characterized by, The vehicle battery comprises a fuel cell and an energy storage battery connected electrically, the energy storage battery is used to store the electric energy generated by the fuel cell and provide energy for the vehicle, and the fuel cell vehicle battery temperature control method comprises the following steps: When the vehicle is in a driving state, if the destination environment temperature of the vehicle is lower than an environment temperature threshold and the planned parking time length is less than a time length threshold, the power supply proportion of the energy storage battery and the fuel cell to the vehicle is adjusted, so that the electric quantity of the energy storage battery reaches a preset electric quantity value; the planned parking time length is the time length that the vehicle is expected to park at the destination; wherein, the start-stop times of the fuel cell within the planned parking time length, the single power generation quantity of the fuel cell each time it starts and stops, and the initial cooling time length are determined; the initial cooling time length comprises a first initial cooling time length and a second initial cooling time length, the first initial cooling time length is the time length for the fuel cell to be cooled from an initial temperature to a first battery temperature threshold, and the second initial cooling time length is the time length for the energy storage battery to be cooled from the initial temperature to a second battery temperature threshold; the initial temperature is the temperature of the fuel cell and the energy storage battery when the vehicle arrives at the destination; the required chargeable capacity is determined according to the start-stop times, the single power generation quantity and the initial cooling time length; the required chargeable capacity is the chargeable capacity that the energy storage battery can provide within the planned parking time length; the power supply proportion of the energy storage battery and the fuel cell to the vehicle is adjusted according to the required chargeable capacity, so that the electric quantity of the energy storage battery reaches the preset electric quantity value; When the vehicle arrives at the destination and is in a parking state, the temperature of the fuel cell and the temperature of the energy storage battery are obtained; and If the temperature of the fuel cell is lower than the first battery temperature threshold and / or the temperature of the energy storage battery is lower than the second battery temperature threshold, the fuel cell is started to run, so that the energy storage battery is charged by the electric energy generated by the running of the fuel cell, and the fuel cell and the energy storage battery are heated by the heat generated by the running of the fuel cell.

2. The fuel cell vehicle battery thermal retention control method according to claim 1, characterized by, The fuel cell comprises a first pipeline, the energy storage battery comprises a second pipeline, and the first pipeline and the second pipeline are used to accommodate a heat-conducting medium flowing therein, and the first pipeline and the second pipeline are connected through a switch valve; The fuel cell vehicle battery temperature control method comprises the following steps: If the temperature of the fuel cell is lower than the first battery temperature threshold and / or the temperature of the energy storage battery is lower than the second battery temperature threshold, the switch valve is controlled to be opened, so that the first pipeline and the second pipeline are communicated.

3. The fuel cell vehicle battery thermal control method according to claim 1, characterized by, The fuel cell vehicle battery temperature control method comprises the following steps: If the temperature of the fuel cell is higher than a third battery temperature threshold and / or the temperature of the energy storage battery is higher than a fourth battery temperature threshold, the fuel cell is controlled to stop running; the third battery temperature threshold is greater than the first battery temperature threshold; and the fourth battery temperature threshold is greater than the second battery temperature threshold.

4. The fuel cell vehicle battery thermal control method according to claim 1, characterized by, The determining the number of start-stop times of the fuel cell within the planned parking duration, the single power generation of the fuel cell each time of start-stop, and the initial cooling duration comprises: determining a first temperature rising value of the fuel cell from the first battery temperature threshold to a third battery temperature threshold; determining a second temperature rising value of the energy storage battery from the second battery temperature threshold to a fourth battery temperature threshold; determining the single power generation of the fuel cell according to the destination environment temperature, the first temperature rising value or the second temperature rising value.

5. The fuel cell vehicle battery thermal control method according to claim 1, characterized by, The determining the number of start-stop times of the fuel cell within the planned parking duration, the single power generation of the fuel cell each time of start-stop, and the initial cooling duration comprises: determining a first temperature rising duration of the fuel cell from the first battery temperature threshold to a third battery temperature threshold; determining a first temperature falling duration of the fuel cell from the third battery temperature threshold to the first battery temperature threshold; determining a second temperature rising duration of the energy storage battery from the second battery temperature threshold to a fourth battery temperature threshold; determining a second temperature falling duration of the energy storage battery from the fourth battery temperature threshold to the second battery temperature threshold; determining a single start-stop duration of the fuel cell according to the first temperature rising duration or the second temperature rising duration, the first temperature falling duration or the second temperature falling duration; determining the number of start-stop times of the fuel cell according to the planned parking duration, the single start-stop duration and the initial cooling duration.

6. The fuel cell vehicle battery thermal control method according to claim 5, characterized by, The number of start-stop times is in a functional relationship with the planned parking duration, the single start-stop duration and the initial cooling duration.

7. A computer readable storage medium characterized in that, A computer program is stored thereon, which is executed by a processor to implement the fuel cell vehicle battery temperature control method according to any one of claims 1 to 6.

8. A fuel cell vehicle battery thermal control system characterized by comprising: One or more processors are included to execute the fuel cell vehicle battery temperature control method according to any one of claims 1 to 6.

9. A fuel cell vehicle characterized by comprising: comprise: a fuel cell; an energy storage battery electrically connected with the fuel cell, used for storing the electric energy generated by the fuel cell and providing energy for the vehicle; and The fuel cell vehicle battery temperature control system according to claim 8 is electrically connected with the fuel cell and the energy storage battery. ​

Images