CN115642346A - Battery cooling control method for vehicle and vehicle - Google Patents

Battery cooling control method for vehicle and vehicle Download PDF

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Publication number
CN115642346A
CN115642346A CN202110817198.2A CN202110817198A CN115642346A CN 115642346 A CN115642346 A CN 115642346A CN 202110817198 A CN202110817198 A CN 202110817198A CN 115642346 A CN115642346 A CN 115642346A
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China
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vehicle
cooling
battery
control signal
compressor
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CN202110817198.2A
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周骥
肖晨光
王智鸿
李凌岳
谭亮
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PSA Automobiles SA
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PSA Automobiles SA
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Priority to CN202110817198.2A priority Critical patent/CN115642346A/en
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    • YGENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02EREDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E60/00Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
    • Y02E60/10Energy storage using batteries

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Abstract

The invention provides a battery cooling control method for a vehicle, the battery cooling control method including: receiving, via an on-board networking device of a vehicle, altitude data for a geographic location at which the vehicle is currently located, the vehicle including one or more cooling regulation devices controlled to regulate a cooling level of a battery of the vehicle; and adaptively controlling one or more cooling adjustment devices to adjust a cooling level of the battery based on the altitude data. By the scheme of the invention, when the vehicle runs in areas or cities with different altitudes, the cooling of the battery can be adaptively adjusted, so that the temperature of the battery is kept in a desired temperature range, and the optimal power output and input, the maximum available energy and the longest cycle life are realized.

Description

Battery cooling control method for vehicle and vehicle
Technical Field
The present invention relates generally to the field of battery thermal management for vehicles. More particularly, the invention relates to a battery cooling control method for a vehicle, a computer-readable storage medium, and a vehicle.
Background
Vehicle propulsion technology is constantly evolving to reduce reliance on fossil fuels, and electric drive systems are an alternative to internal combustion engines. The electric drive system is typically powered by a battery. However, temperature factors have a crucial influence on the performance, life and safety of the battery. Generally, it is desirable for high voltage batteries to operate in the range of 20-30 degrees celsius to achieve optimal performance and maximum life. During the driving phase or the charging phase of the vehicle, thermal management of the battery is performed by a Battery Management System (BMS) to maintain the battery within a desired temperature range. When the temperature of the battery is too high, the BMS controls a heat dissipation or cooling device to cool the battery, so that thermal runaway is prevented; when the battery temperature is excessively low, the BMS prevents the battery capacity from being lowered by controlling the heating means to heat the battery.
In a liquid cooling system, a cooling liquid is generally pumped by a cooling liquid pump to cool the battery. However, in higher altitude areas or cities, such as Dunhuang in the West of China, the air pressure and density are much less than in lower altitude areas or cities. When the vehicle travels in such areas or cities, the lean air causes deterioration in the cooling effect of the battery, which causes deviation in thermal management of the battery, may fail to maintain the temperature of the battery within a desired temperature range, and even a thermal runaway situation may occur.
Disclosure of Invention
As described above, when the vehicle travels in an area or city with a high altitude, the cooling effect of the battery becomes poor, which makes the temperature of the battery not to be maintained within a desired temperature range, and even a thermal runaway situation may occur. However, in the prior art, the same control strategy is used to thermally manage the battery regardless of whether the vehicle is traveling in a plateau or a flat area, regardless of the altitude of the area or city in which the vehicle is located.
In view of the above technical problem, a first aspect of the present invention proposes a battery cooling control method for a vehicle, the battery cooling control method comprising: receiving, via an on-board networking device of a vehicle, altitude data for a geographic location at which the vehicle is currently located, the vehicle including one or more cooling regulation devices controlled to regulate a cooling level of a battery of the vehicle; and adaptively controlling the one or more cooling adjustment devices to adjust the cooling level of the battery based on the altitude data.
According to the above method, when the vehicle travels in an area or city at different altitudes, the cooling effect of the battery can be adaptively adjusted so that the temperature of the battery is maintained within a desired temperature range, optimal power output and input, maximum available energy, and the longest cycle life are achieved. When implemented in software, the method of the present invention can be directly implemented in the existing control system without adding or replacing any hardware, and the cost is low.
According to some optional embodiments, the vehicle comprises a coolant circulation loop for cooling the battery, the one or more cooling regulation devices comprises a coolant pump disposed in the coolant circulation loop for controlling a flow rate of coolant in the coolant circulation loop, and adaptively controlling the one or more cooling regulation devices according to the altitude data further comprises: determining a correction coefficient according to the altitude data; generating a pump control signal using a preset algorithm based on the temperature of the coolant; correcting the pump control signal using the correction coefficient; and providing the corrected pump control signal to the coolant pump to control the pump speed of the coolant pump.
According to some optional embodiments, determining a correction factor from the altitude data further comprises: judging the altitude interval to which the altitude data belongs according to a plurality of predefined altitude intervals, wherein each predefined altitude interval corresponds to a specific correction coefficient; and taking a correction coefficient corresponding to an altitude interval to which the altitude data belongs as the correction coefficient.
According to some optional embodiments, the pump control signal is a pulse width modulated signal, and modifying the pump control signal using the correction factor further comprises: the pump control signal is corrected by multiplying the duty ratio of the pump control signal by the correction coefficient.
According to some optional embodiments, the vehicle further comprises a refrigerant circulation circuit, the one or more cooling conditioning devices further comprises a compressor disposed in the refrigerant circulation circuit, the refrigerant circulation circuit is coupled with the coolant circulation circuit to dissipate heat from the coolant, the compressor is configured to compress a refrigerant in the refrigerant circulation circuit, and the adaptively controlling the one or more cooling conditioning devices according to the altitude data further comprises: generating a compressor control signal using a preset algorithm based on the pressure of the refrigerant; correcting the compressor control signal using the correction coefficient; and providing the corrected compressor control signal to the compressor to control a load of the compressor.
According to some optional embodiments, the compressor control signal is a pulse width modulated signal and modifying the compressor control signal using the modification factor further comprises: modifying the compressor control signal by multiplying a duty cycle of the compressor control signal by the modification factor.
According to some optional embodiments, the in-vehicle networking device communicates with a cloud server via a mobile network, and the altitude data of the current geographic location of the vehicle is received from the cloud server.
According to some optional embodiments, the cloud server determines the current geographic location of the vehicle by communicating with the in-vehicle networking device via the mobile network, and determines the altitude data according to the geographic location.
A second aspect of the invention proposes a computer-readable storage medium having stored thereon computer-executable instructions for performing a method according to any one of the above embodiments.
A third aspect of the invention proposes a vehicle comprising: a vehicle-mounted networking device; a battery and one or more cooling conditioning devices controlled to cool the battery; and a control device configured to perform the method according to any of the above embodiments to control the one or more cooling regulation devices.
Drawings
Features, advantages and other aspects of various embodiments of the present invention will become more apparent by referring to the following detailed description in conjunction with the accompanying drawings, in which like reference numerals represent the same or similar parts, and in which several embodiments of the present invention are shown by way of illustration and not limitation.
FIG. 1 illustrates a schematic diagram of a battery liquid cooling system according to an embodiment of the present invention;
FIG. 2 shows a flow diagram of a battery cooling control method according to an embodiment of the invention;
FIG. 3 shows several sub-steps of step 21 in the embodiment of FIG. 2; and
fig. 4 shows an architectural schematic of a battery cooling control system according to an embodiment of the invention.
Detailed Description
Various exemplary embodiments of the present invention are described in detail below with reference to the accompanying drawings. Although the example methods, apparatus, and devices described below include software and/or firmware executed on hardware among other components, it should be noted that these examples are merely illustrative and should not be considered as limiting. For example, it is contemplated that any or all of the hardware, software, and firmware components could be embodied exclusively in hardware, exclusively in software, or in any combination of hardware and software. Thus, while the following describes example methods and apparatus, persons of ordinary skill in the art will readily appreciate that the examples provided are not intended to limit the manner in which the methods and apparatus may be implemented.
Furthermore, the flowchart and block diagrams in the figures illustrate the architecture, functionality, and operation of possible implementations of methods and systems according to various embodiments of the present invention. It should be noted that the functions noted in the block may occur out of the order noted in the figures. For example, two blocks shown in succession may, in fact, be executed substantially concurrently, or the blocks may sometimes be executed in the reverse order, depending upon the functionality involved. It will also be noted that each block of the flowchart illustrations and/or block diagrams, and combinations of blocks in the flowchart illustrations and/or block diagrams, can be implemented by special purpose hardware-based systems which perform the specified functions or acts, or combinations of special purpose hardware and computer instructions.
For convenience of description, some terms appearing in the present invention will be described below, and it should be understood that the terms used in the present application should be interpreted to have meanings consistent with their meanings in the context of the present specification and the relevant art. The terms "including," "comprising," and the like, as used herein, are to be construed as open-ended terms, i.e., "including, but not limited to," meaning that additional content may be included.
In embodiments of the present invention, the term "based on" is "based, at least in part, on".
In embodiments of the invention, the term "one embodiment" means "at least one embodiment".
In an embodiment of the invention, the term "another embodiment" means "at least one further embodiment" or the like.
In embodiments of the present invention, the term "vehicle" may be an automobile, a truck, an SUV, a van, a bus or any other rolling platform, which may be a pure electric vehicle or a hybrid vehicle.
In an embodiment of the present invention, the term "battery" may include a single battery, a battery module composed of a plurality of batteries, or a battery pack.
Currently, a control strategy for thermally managing a battery of a vehicle is independent of the altitude of an area or city where the vehicle is traveling, which results in deterioration of the cooling effect of the battery, failure to maintain the temperature of the battery within a desired temperature range, and even a thermal runaway situation when the vehicle is traveling in an area or city with a higher altitude.
To this end, an embodiment of the present invention proposes a battery cooling control method capable of adaptively adjusting cooling of a battery according to an altitude of a location where a vehicle is located, thereby maintaining the temperature of the battery within a desired temperature range, achieving optimal power output and input, maximum available energy, and longest cycle life.
The invention is described below with reference to several embodiments. FIG. 1 shows a schematic diagram of a battery liquid cooling system according to an embodiment of the invention. As shown in fig. 1, the battery liquid cooling system 100 includes two parts, a battery cooling system 10 and an air conditioning and refrigeration system 11. It should be noted that only some of the necessary components of the battery liquid cooling system 100 are shown in fig. 1, and not all of them. In fig. 1, the battery cooling system 10 includes a coolant circulation circuit in which a battery 101, a coolant pump 102, and a coolant expansion tank 103 are disposed. The coolant pump 102 is used to control the flow rate of the coolant in the coolant circulation loop, the faster the flow rate, the better the heat exchange performance. As the coolant flows through the coolant lines around or near the battery 101, it absorbs heat dissipated by the battery 101. And a cooling liquid temperature sensor is arranged at the inlet and/or the outlet of the cooling liquid pipeline and is used for detecting the temperature of the cooling liquid. The Battery Management System (BMS) dynamically controls the pump speed of the coolant pump 102 according to the temperature of the coolant, thereby controlling the cooling effect of the battery 101.
Although not shown in fig. 1, a four-way valve is further provided in the coolant circulation circuit of the battery cooling system 10, which communicates with one of the three branch lines in different modes (e.g., battery heating, natural heat dissipation, and accelerated heat dissipation), respectively. Fig. 1 shows a branch line coupled to an air conditioning and refrigeration system 11. At higher ambient temperatures, the battery 101 needs to dissipate heat, and the requirement cannot be met by the radiator alone, the four-way valve is switched to the branch line shown in fig. 1 coupled to the air conditioning and refrigeration system 11.
As shown in fig. 1, battery cooling system 10 is coupled to air conditioning refrigeration system 11 through battery cooler 103. The air conditioning and refrigeration system 11 mainly includes a compressor 111, a condenser 112 and a fan 113, a dryer 114, a first expansion throttle valve 115, a vehicle interior heat exchanger 116, a vehicle interior blower 117, a second expansion throttle valve 118, and the like. The refrigerant circulation circuit of the air conditioning and cooling system 11 is configured by two parallel branch lines, one of which is used to cool the vehicle interior space and the other of which is used to cool the battery 101. The first expansion throttle 115, the in-vehicle space heat exchanger 116, and the in-vehicle space blower 117 are located in a branch line for cooling the in-vehicle space. A second expansion throttle 118 is located in the branch line for cooling the battery 101. When necessary, the second expansion throttle 118 is opened, and the branch line is opened to flow the refrigerant into the battery cooler 104. The battery cooler 104 functions as an exchange of refrigerant and coolant, by which heat of the coolant is taken away. The compressor 111 is used to compress the refrigerant in the refrigerant circulation circuit so that the refrigerant continuously absorbs heat during the circulation. The larger the load of the compressor 111, the larger the refrigerant pressure at its outlet, and the better the heat exchange performance. A refrigerant pressure sensor is provided at an inlet and/or an outlet of the compressor 111 for detecting a pressure of the refrigerant. An air conditioner Electronic Control Unit (ECU) dynamically controls the load of the compressor according to the refrigerant pressure, thereby controlling the cooling effect of the battery 101.
Fig. 2 shows a flow chart of a battery cooling control method according to an embodiment of the invention. The battery cooling control method may be performed by a control apparatus that controls a liquid cooling system (such as the liquid cooling system 100 shown in fig. 1). Referring to fig. 2, method 200 begins at step 21. In step 21, altitude data for the geographic location where the vehicle is currently located is received via the vehicle networking device of the vehicle. The vehicle includes one or more cooling adjustment devices that are controlled to adjust a cooling level of the battery. The one or more cooling conditioning devices may be any device that affects the level of cooling of the battery, such as the coolant pump 102 and/or the compressor 111 in the liquid cooling system 100. The in-vehicle networking device may receive, from the cloud server via the mobile network, altitude data for a geographic location where the vehicle is currently located. More specifically, the on-board networking device of the vehicle communicates with the cloud server of the host plant via a mobile network (e.g., 4G, 5G network) and periodically sends vehicle-related data, such as battery status, driving data, etc., to the cloud server. The cloud server determines the current geographic position of the vehicle through communication with the vehicle-mounted networking device through the mobile network, and determines altitude data according to the geographic position, for example, the altitude data of the geographic position can be inquired through the Internet. The time and frequency at which the cloud server determines the geographic location of the vehicle may be set as desired. For example, the cloud server is required to determine the vehicle geographic location each time the vehicle is started, and the cloud server periodically determines the vehicle geographic location after the vehicle is started. And then, the cloud server sends the determined altitude data to the vehicle-mounted networking equipment, and the vehicle-mounted networking equipment sends the altitude data to the control unit. The time and conditions for the cloud server to transmit the altitude data may be set as needed. For example, after each query for altitude data, the cloud server sends the altitude data to the in-vehicle networking device. For another example, after each query of the altitude data, the cloud server compares the altitude data with the altitude data determined last time, and only when the altitude data changes, the cloud server transmits the altitude data to the vehicle-mounted networking device.
Next, in step 22, one or more cooling adjustment devices are adaptively controlled to adjust the cooling level of the battery based on the altitude data. That is, in controlling one or more of the cooling adjustment devices, altitude data for the geographic location of the vehicle is used as an input signal in addition to the usual input signals (e.g., coolant temperature and refrigerant pressure). In this way, the cooling effect of the battery can be adaptively adjusted as the vehicle travels in areas or cities of different altitudes, thereby maintaining the temperature of the battery within a desired temperature range, achieving optimal power output and input, maximum available energy, and maximum cycle life.
In the present embodiment, the vehicle includes a coolant circulation circuit, and the one or more cooling regulation devices include a coolant pump provided in the coolant circulation circuit for controlling a flow rate of the coolant in the coolant circulation circuit. Fig. 3 shows several sub-steps of step 22 in the embodiment of fig. 2. Referring to fig. 3, in step 221, a correction coefficient is determined from the altitude data. In the present embodiment, the altitude interval to which the altitude data belongs is determined based on a plurality of predefined altitude intervals, each of which corresponds to a specific correction coefficient. The correction coefficient corresponding to the altitude interval to which the altitude data belongs is the correction coefficient to be determined. Table 1 below shows a plurality of preset altitude intervals and their corresponding correction coefficients.
Interval of altitude Correction factor K
≤1000m 1
1000m<A≤1100m 1.1
1100m<A≤1500m 1.2
1500m<A≤1900m 1.3
1900m<A≤2200m 1.4
2200m<A≤2400m 1.5
2400m<A≤3200m 1.8
3200m<A≤3600m 1.9
3600m<A≤3800m 2.0
TABLE 1
As can be seen from table 1, if the altitude a is less than or equal to 1000 meters, the correction coefficient K is 1; if the altitude a is greater than 1100 but less than or equal to 1500 meters, the correction factor K is 1.1, and so on. It should be noted that table 1 is only an example, and the altitude interval and the corresponding correction coefficient may be set as needed.
Next, in step 222, a pump control signal is generated using a preset algorithm based on the temperature of the coolant. The temperature of the coolant may be detected by a coolant temperature sensor. The algorithm for generating the pump control signal is preset as needed. In the present embodiment, when the temperature of the coolant is largely different from the target temperature, the pump control signal controls the pump speed of the coolant pump to be rapidly increased, rapidly decreases the temperature of the coolant by increasing the flow rate of the coolant, and increases the cooling level of the battery. When the temperature of the coolant approaches the target temperature, the pump control signal controls the pump speed of the coolant pump to gradually decrease. When the temperature of the cooling liquid reaches the target temperature, the pump control signal controls the cooling liquid pump to stop working.
In step 223, the pump control signal is modified using the correction factor. In the present embodiment, the pump control signal is a pulse width modulation signal, and the pump control signal is corrected by multiplying the duty ratio of the pump control signal by a correction coefficient. That is, when the vehicle is in an area or city with a high altitude, the average voltage value of the pump control signal is increased by a certain proportion, the pump speed of the cooling liquid pump is correspondingly increased by a certain proportion, and the cooling effect of the battery is enhanced. Finally, in step 224, the corrected pump control signal is provided to the coolant pump to control the pump speed of the coolant pump.
In some embodiments, the vehicle further includes a refrigerant circulation circuit coupled to the coolant circulation circuit. The one or more cooling conditioning units further include a compressor disposed in the refrigerant circulation circuit. The compressor is used for compressing refrigerant in the refrigerant circulation circuit. Step 22 further comprises (not shown in fig. 3): generating a compressor control signal using a preset algorithm based on a pressure of a refrigerant; correcting the compressor control signal by using the correction coefficient; and providing the corrected compressor control signal to the compressor to control the load of the compressor. The algorithm for generating the compressor control signal may be preset as needed. In these embodiments, the compressor control signal is a pulse width modulated signal, and the compressor control signal is modified by multiplying the duty cycle of the compressor control signal by a modification factor. When the vehicle is in a region or city with higher altitude, the average voltage value of the control signal of the compressor is increased by a certain proportion, the load of the compressor is correspondingly increased by a certain proportion, and the cooling effect of the battery is enhanced.
An exemplary battery cooling control system of the present invention is described below with reference to fig. 4. Fig. 4 shows an architectural schematic of a battery cooling control system according to an embodiment of the invention. In this embodiment, the battery cooling control system of fig. 4 is used to control the liquid cooling system of fig. 1.
As shown in fig. 4, an in-vehicle networking device 42 (e.g., T-BOX) communicates with the cloud server 41 via a mobile network. The cloud server 41 determines the geographical position where the vehicle is currently located through communication with the in-vehicle networking device 42, determines altitude data from the geographical position, and transmits the determined altitude data to the in-vehicle networking device 42 via the mobile network. The in-vehicle networking device 42 then sends the altitude data to the BMS44 via the CAN bus.
The coolant sensor 43 transmits the measured coolant temperature to the BMS44 in a wired manner. The BMS44 determines a correction coefficient from the altitude data and sends the correction coefficient to the air-conditioning ECU 46 via the CAN bus. The correction coefficient increases with increasing altitude. On the other hand, the BMS44 generates the coolant pump control signal using a preset algorithm based on the coolant temperature, corrects the coolant pump control signal using the correction coefficient, and provides the corrected coolant pump control signal to the coolant pump in a wired manner, thereby controlling the pump speed of the coolant pump. The refrigerant pressure sensor 45 sends the measured refrigerant pressure to the air-conditioning ECU 46 in a wired manner. The air-conditioning ECU 46 sends a valve opening command to the second expansion throttle valve 118 in a wired manner to cause the refrigerant to exchange heat with the coolant in the battery cooler 104. The air conditioner ECU 46 also generates a compressor control signal using a preset algorithm based on the pressure of the refrigerant, and corrects the compressor control signal using a correction coefficient, and supplies the corrected compressor control signal to the compressor via the LIN bus, thereby controlling the load of the compressor. Accordingly, the reduction of the cooling effect caused by high altitude is compensated by correcting the coolant pump control signal and the compressor control signal according to altitude, so that the temperature of the battery is maintained within a desired temperature range, achieving optimal power output and input, maximum available energy, and longest cycle life.
Further, alternatively, the above-described method can be implemented by a computer-readable storage medium. Computer readable storage media has computer readable program instructions embodied thereon for performing the various embodiments of the disclosure. The computer readable storage medium may be a tangible device that can hold and store the instructions for use by the instruction execution device. The computer readable storage medium may be, for example, but not limited to, an electronic memory device, a magnetic memory device, an optical memory device, an electromagnetic memory device, a semiconductor memory device, or any suitable combination of the foregoing. More specific examples (a non-exhaustive list) of the computer readable storage medium would include the following: a portable computer diskette, a hard disk, a Random Access Memory (RAM), a read-only memory (ROM), an erasable programmable read-only memory (EPROM or flash memory), a Static Random Access Memory (SRAM), a portable compact disc read-only memory (CD-ROM), a Digital Versatile Disc (DVD), a memory stick, a floppy disk, a mechanical coding device, such as a punch card or an in-groove protruding structure with instructions stored thereon, and any suitable combination of the foregoing. Computer-readable storage media as used herein is not to be construed as transitory signals per se, such as radio waves or other freely propagating electromagnetic waves, electromagnetic waves propagating through a waveguide or other transmission medium (e.g., optical pulses through a fiber optic cable), or electrical signals transmitted through electrical wires.
Thus, in another embodiment, the invention proposes a computer-readable storage medium having stored thereon computer-executable instructions for performing the methods in the various embodiments of the invention.
In another embodiment, the invention provides a vehicle comprising: a vehicle-mounted networking device; a battery and one or more cooling regulation devices, the one or more cooling regulation devices being controlled to cool the battery; and a control device configured to perform the method in various embodiments of the invention to control one or more cooling regulation devices.
The control device may include a microprocessor, microcontroller, programmable digital signal processor, or another programmable device. The control device may also or alternatively comprise an application specific integrated circuit, a programmable gate array or programmable array logic, a programmable logic device or a digital signal processor. When the control device comprises a programmable device such as the microprocessor, microcontroller, or programmable digital signal processor described above, the processor may also include computer executable code that controls the operation of the programmable device.
In general, the various exemplary embodiments of this invention may be implemented in hardware or special purpose circuits, software, firmware, logic or any combination thereof. Certain aspects may be implemented in hardware, while other aspects may be implemented in firmware or software which may be executed by a controller, microprocessor or other computing device. While various aspects of the embodiments of the invention may be illustrated and described as block diagrams, flow charts, or using some other pictorial representation, it is well understood that the blocks, apparatus, systems, techniques or methods described herein may be implemented in, as non-limiting examples, hardware, software, firmware, special purpose circuits or logic, general purpose hardware or controller or other computing devices, or some combination thereof.
The computer-readable program instructions or computer program products for executing the embodiments of the present invention can also be stored in the cloud, and when the call is needed, the user can access the computer-readable program instructions stored in the cloud for executing one embodiment of the present invention through the mobile internet, the fixed network, or other networks, so as to implement the technical solutions disclosed in the embodiments of the present invention.
While embodiments of the invention have been described with reference to several particular embodiments, it should be understood that embodiments of the invention are not limited to the particular embodiments disclosed. The embodiments of the invention are intended to cover various modifications and equivalent arrangements included within the spirit and scope of the appended claims. The scope of the claims is to be accorded the broadest interpretation so as to encompass all such modifications and equivalent structures and functions.

Claims (10)

1. A battery cooling control method for a vehicle, characterized by comprising:
receiving, via an on-board networking device of the vehicle, altitude data for a geographic location where the vehicle is currently located, the vehicle including one or more cooling regulation devices controlled to regulate a cooling level of a battery of the vehicle; and
adaptively controlling the one or more cooling adjustment devices to adjust the cooling level of the battery based on the altitude data.
2. The battery cooling control method according to claim 1, wherein the vehicle further includes a coolant circulation circuit for cooling the battery, the one or more cooling adjustment devices include a coolant pump provided in the coolant circulation circuit for adjusting a flow rate of coolant in the coolant circulation circuit, and the adaptively controlling the one or more cooling adjustment devices according to the altitude data further includes:
determining a correction coefficient according to the altitude data;
generating a pump control signal using a preset algorithm based on the temperature of the coolant;
correcting the pump control signal using the correction coefficient; and
providing the corrected pump control signal to the coolant pump to control the pump speed of the coolant pump.
3. The battery cooling control method of claim 2, wherein determining a correction factor based on the altitude data further comprises:
judging the altitude interval to which the altitude data belongs according to a plurality of predefined altitude intervals, wherein each predefined altitude interval corresponds to a specific correction coefficient; and
and taking a correction coefficient corresponding to an altitude interval to which the altitude data belongs as the correction coefficient.
4. The battery cooling control method according to claim 2, wherein the pump control signal is a pulse width modulation signal, and wherein correcting the pump control signal using the correction coefficient further comprises:
the pump control signal is corrected by multiplying the duty ratio of the pump control signal by the correction coefficient.
5. The battery cooling control method according to claim 2, wherein the vehicle further includes a refrigerant circulation circuit coupled with the coolant circulation circuit, the one or more cooling regulating devices further include a compressor provided in the refrigerant circulation circuit, the compressor being configured to compress a refrigerant in the refrigerant circulation circuit, and wherein adaptively controlling the one or more cooling regulating devices according to the altitude data further includes:
generating a compressor control signal using a preset algorithm based on the pressure of the refrigerant;
correcting the compressor control signal using the correction coefficient; and
providing the corrected compressor control signal to the compressor to control a load of the compressor.
6. The battery cooling control method of claim 5, wherein the compressor control signal is a pulse width modulated signal, and wherein modifying the compressor control signal using the modification factor further comprises:
modifying the compressor control signal by multiplying a duty cycle of the compressor control signal by the modification factor.
7. The battery cooling control method according to claim 1, wherein the in-vehicle networking device communicates with a cloud server via a mobile network, and the altitude data of the geographical location where the vehicle is currently located is received from the cloud server.
8. The battery cooling control method according to claim 7, wherein the cloud server determines a geographical location where the vehicle is currently located by communicating with the on-board networking device via the mobile network, and determines the altitude data according to the geographical location.
9. A computer-readable storage medium having stored thereon computer-executable instructions for performing the method of any one of claims 1-8.
10. A vehicle, characterized in that the vehicle comprises:
a vehicle-mounted networking device;
a battery and one or more cooling regulating devices controlled to regulate a cooling level of the battery; and
a control device configured to perform the method of any one of claims 1-8 to control the one or more cooling conditioning devices.
CN202110817198.2A 2021-07-20 2021-07-20 Battery cooling control method for vehicle and vehicle Pending CN115642346A (en)

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CN202110817198.2A CN115642346A (en) 2021-07-20 2021-07-20 Battery cooling control method for vehicle and vehicle

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Publication Number Publication Date
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