CN112038731A - Battery temperature control method, battery management controller, system and automobile - Google Patents
Battery temperature control method, battery management controller, system and automobile Download PDFInfo
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- CN112038731A CN112038731A CN202010750557.2A CN202010750557A CN112038731A CN 112038731 A CN112038731 A CN 112038731A CN 202010750557 A CN202010750557 A CN 202010750557A CN 112038731 A CN112038731 A CN 112038731A
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M10/00—Secondary cells; Manufacture thereof
- H01M10/60—Heating or cooling; Temperature control
- H01M10/61—Types of temperature control
- H01M10/617—Types of temperature control for achieving uniformity or desired distribution of temperature
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M10/00—Secondary cells; Manufacture thereof
- H01M10/60—Heating or cooling; Temperature control
- H01M10/62—Heating or cooling; Temperature control specially adapted for specific applications
- H01M10/625—Vehicles
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M10/00—Secondary cells; Manufacture thereof
- H01M10/60—Heating or cooling; Temperature control
- H01M10/63—Control systems
- H01M10/635—Control systems based on ambient temperature
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M10/00—Secondary cells; Manufacture thereof
- H01M10/60—Heating or cooling; Temperature control
- H01M10/65—Means for temperature control structurally associated with the cells
- H01M10/655—Solid structures for heat exchange or heat conduction
- H01M10/6556—Solid parts with flow channel passages or pipes for heat exchange
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M10/00—Secondary cells; Manufacture thereof
- H01M10/60—Heating or cooling; Temperature control
- H01M10/65—Means for temperature control structurally associated with the cells
- H01M10/656—Means for temperature control structurally associated with the cells characterised by the type of heat-exchange fluid
- H01M10/6567—Liquids
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- Y—GENERAL 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
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02E60/10—Energy storage using batteries
Abstract
The invention discloses a battery temperature control method, a battery management controller, a system and an automobile, and relates to the technical field of battery management, wherein the method comprises the following steps: obtaining module temperature values of a plurality of area modules, and calculating a module temperature difference value between any two module temperature values; if the temperature difference value of at least one module is greater than or equal to the preset maximum temperature difference value, and the temperature values of all the modules are greater than the preset minimum temperature value and less than the preset maximum temperature value, the refrigerator and the heater are turned off, and the water pump is turned on. The invention adds a cold plate pipeline electromagnetic valve, achieves the effect of switching on and off cooling water by controlling the opening of the valve, thereby balancing the cooling and heating requirements, and can equalize the temperature as soon as possible when the temperature difference is larger.
Description
Technical Field
The invention relates to the field of battery control, in particular to a battery temperature control method, a battery management controller, a battery management system and an automobile.
Background
The development of new energy is trending, and the performance of the power battery module as a main energy supply device in the new energy directly influences the development of the whole industry. At present to power battery module, too high or low enough can influence its performance when the temperature, make battery module's life reduce, still can lead to battery module's power supply efficiency to diminish, and then cause the potential safety hazard, generally detect the temperature at present, then cool off or heat correspondingly, but the temperature that exists to battery module itself is uneven not handled.
Disclosure of Invention
The invention aims to overcome the defects of the background technology and provides a battery temperature control method, a battery management controller, a system and an automobile.
In a first aspect, a battery temperature control method is provided, which is applied to a battery management controller, and includes the following steps:
obtaining module temperature values of a plurality of area modules, and calculating a module temperature difference value between any two module temperature values;
if the temperature difference value of at least one module is greater than or equal to the preset maximum temperature difference value, and the temperature values of all the modules are greater than the preset minimum temperature value and less than the preset maximum temperature value, the refrigerator and the heater are turned off, and the water pump is turned on.
According to the first aspect, in a first possible implementation manner of the first aspect, after the step of obtaining module temperature values of a plurality of area modules, the method includes the following steps:
comparing the module temperature value with a preset maximum temperature value;
and if the temperature value of at least one module is greater than or equal to the preset maximum temperature value, identifying the module area corresponding to the temperature value of at least one module, and starting the refrigerator, the water pump and the inlet and outlet valves of the corresponding module area.
According to the first aspect, in a second possible implementation manner of the first aspect, after the step of obtaining module temperature values of a plurality of area modules, the method includes the following steps:
comparing the module temperature value with a preset minimum temperature value;
and if the temperature value of at least one module is less than or equal to the preset minimum temperature value, identifying the module area corresponding to the temperature value of at least one module, and starting the heater, the water pump and the inlet and outlet valves of the corresponding module area.
According to the first aspect, in a third possible implementation manner of the first aspect, the step of turning off the refrigerator and the heater and turning on the water pump if the at least one module temperature difference value is greater than or equal to the preset maximum temperature difference value and all module temperature values are greater than the preset minimum temperature value and less than the preset maximum temperature value includes the following steps:
comparing the module temperature value with a preset maximum temperature difference value, and comparing the module temperature value with a preset minimum temperature value and a preset maximum temperature value;
if the temperature difference value of at least one module is greater than or equal to a preset maximum temperature difference value, and the temperature values of all the modules are greater than a preset minimum temperature value and less than a preset maximum temperature value, identifying a module area corresponding to the temperature difference value;
and (4) closing the refrigerator and the heater, and opening the water pump and the inlet and outlet valves of the corresponding module areas.
According to the first aspect, in a fourth possible implementation manner of the first aspect, after the step of "obtaining module temperature values of a plurality of area modules and calculating a module temperature difference value between any two module temperature values", the method includes the following steps:
comparing the module temperature value with a preset maximum temperature difference value, and comparing the module temperature value with a preset minimum temperature value and a preset maximum temperature value;
and if all the module temperature values are greater than the preset minimum temperature value and less than the preset maximum temperature value and all the module temperature difference values are less than the preset maximum temperature difference value, the refrigerator, the heater and the water pump are shut down.
According to the first aspect, in a fifth possible implementation manner of the first aspect, after the step of turning off the refrigerator and the heater and turning on the water pump, the method includes the following steps:
detecting the flow of the cooling liquid flowing out of the plurality of module areas through a flow sensor;
and if the flow of the cooling liquid flowing out of the certain module area is detected to be smaller than the preset flow, closing the inlet and outlet valve of the certain module area.
According to a third possible implementation manner of the first aspect, in a sixth possible implementation manner of the first aspect, after the step of "if the flow rate of the cooling liquid flowing out of the certain module area is detected to be smaller than the preset flow rate", the method includes the following steps:
when a trigger signal of a liquid level sensor in a certain module area is received, an inlet and outlet valve of the certain module area is closed, and information is sent to prompt that cooling liquid leaks;
when the trigger signal of the liquid level sensor in a certain module area is not received and the flow of the cooling liquid in the certain module area is detected to be zero, sending information to prompt that the area is blocked.
In a second aspect, a battery management controller is provided, comprising:
the module temperature acquisition module is used for acquiring module temperature values of a plurality of area modules and calculating a module temperature difference value between any two module temperature values;
the module temperature comparison module is in communication connection with the module temperature acquisition module and is used for comparing the module temperature difference value with a preset maximum temperature difference value and comparing the module temperature value with a preset minimum temperature value and a preset maximum temperature value; and the number of the first and second groups,
and the module temperature regulating and controlling module is in communication connection with the module temperature comparing module and is used for controlling the refrigerator, the heater and the water pump to be started or closed according to the size relation between the module temperature difference value and the preset maximum temperature difference value and the size relation between the module temperature value and the preset minimum temperature value and the maximum temperature value.
In a third aspect, a battery temperature control system is provided, which comprises the battery management controller.
In a fourth aspect, an automobile is provided, which comprises the battery temperature control system.
Compared with the prior art, the invention adds the cold plate pipeline electromagnetic valve, achieves the effect of switching on and off the cooling water by controlling the opening of the valve, thereby balancing the cooling and heating requirements, and can equalize the temperature as soon as possible when the temperature difference is larger.
Drawings
FIG. 1 is a schematic flow diagram of an embodiment of the present invention;
FIG. 2 is a schematic structural diagram of an embodiment of the present invention;
fig. 3 is a schematic structural diagram of an embodiment of the present invention.
Reference numerals:
1. a refrigerator; 2. a water pump; 3. a heater; 4. a first region; 5. a valve; 6. a second region; 7. a third region; 100. a battery temperature control system; 110. a module temperature acquisition module; 120. a module temperature comparison module; 130. and the module temperature regulation and control module.
Detailed Description
Reference will now be made in detail to the present embodiments of the invention, examples of which are illustrated in the accompanying drawings. While the invention will be described in conjunction with the specific embodiments, it will be understood that they are not intended to limit the invention to the embodiments described. On the contrary, it is intended to cover alternatives, modifications, and equivalents as may be included within the spirit and scope of the invention as defined by the appended claims. It should be noted that the method steps described herein may be implemented by any functional block or functional arrangement, and that any functional block or functional arrangement may be implemented as a physical entity or a logical entity, or a combination of both.
In order that those skilled in the art will better understand the present invention, the following detailed description of the invention is provided in conjunction with the accompanying drawings and the detailed description of the invention.
Note that: the example to be described next is only a specific example, and does not limit the embodiments of the present invention necessarily to the following specific steps, values, conditions, data, orders, and the like. Those skilled in the art can, upon reading this specification, utilize the concepts of the present invention to construct more embodiments than those specifically described herein.
Referring to fig. 1, an embodiment of the present invention provides a battery temperature control method applied to a battery management controller, including the following steps:
obtaining module temperature values of a plurality of area modules, and calculating a module temperature difference value between any two module temperature values;
if the temperature difference value of at least one module is greater than or equal to the preset maximum temperature difference value, and the temperature values of all the modules are greater than the preset minimum temperature value and less than the preset maximum temperature value, the refrigerator and the heater are turned off, and the water pump is turned on.
Specifically, as shown in fig. 2, the entire battery temperature control system includes a refrigerator 1, a water pump 2, a heater 3, a plurality of valves 5, a first region 4, a second region 6, and a third region 7, which are formed by a plurality of battery modules, and each battery module may be provided with at least one temperature sensor as needed, for example, with temperature sensors respectively provided at a highest temperature position and a lowest temperature position of the battery module. The first area 4, the second area 6 and the third area 7 are independent from each other, and after the inlet and outlet valve of one area is closed, the cooling water of the area cannot flow and exchange with the cooling water of the other area.
In this embodiment, acquire the module temperature value of a plurality of regional modules, also acquire all temperature sensor's that are equipped with module temperature value among the whole battery temperature control system, calculate the module temperature difference value between two arbitrary module temperature values, for example, if be equipped with 4 temperature sensor, then acquire 4 module temperature values, then calculate and obtain 6 module temperature difference values. If all module temperature values are greater than the preset minimum temperature value and less than the preset maximum temperature value, the preset minimum temperature value and the preset maximum temperature value are the lower limit value and the upper limit value of the normal working temperature of the battery module respectively, and the temperature can be designed according to the performance of the battery module. However, at least one module temperature difference value is larger than or equal to a preset maximum temperature difference value, and the service life and the use safety of the battery can be influenced by too large temperature difference. However, the temperature of all the battery modules is within the allowable range, heating or cooling is not needed, if the temperature difference is reduced by adopting a heating or cooling mode, on one hand, the effect may be poor, the temperature difference cannot be rapidly reduced to the allowable range, and on the other hand, the module temperature value originally within the allowable range may exceed the normal range in the heating or cooling process. Therefore, the refrigerator and the heater are turned off, and the water pump is turned on only instead of heating or cooling, so that the cooling water between the battery modules flows to equalize the temperature, thereby reducing the temperature difference.
Optionally, in another embodiment of the application, after the step of obtaining module temperature values of a plurality of area modules, the method includes the following steps:
comparing the module temperature value with a preset maximum temperature value;
and if the temperature value of at least one module is greater than or equal to the preset maximum temperature value, identifying the module area corresponding to the temperature value of at least one module, and starting the refrigerator, the water pump and the inlet and outlet valves of the corresponding module area.
Specifically, in this embodiment, after obtaining the module temperature value of a plurality of regional modules, compare module temperature value and preset maximum temperature value, if there is at least one module temperature value when being more than or equal to preset maximum temperature value, in order to avoid the potential safety hazard, at first start refrigerator and water pump in order to cool down, furthermore, the module region that the discernment module temperature value exceeds preset maximum temperature value corresponds, if the module temperature value that only one or some module regions have battery module exceeds preset maximum temperature value, then only open the regional exit valve of this module, reduce the pipeline of cooling water circulation, reach rapid cooling's purpose.
Optionally, in another embodiment of the application, after the step of obtaining module temperature values of a plurality of area modules, the method includes the following steps:
comparing the module temperature value with a preset minimum temperature value;
and if the temperature value of at least one module is less than or equal to the preset minimum temperature value, identifying the module area corresponding to the temperature value of at least one module, and starting the heater, the water pump and the inlet and outlet valves of the corresponding module area.
Specifically, in this embodiment, after obtaining the module temperature values of a plurality of regional modules, compare module temperature value and preset minimum temperature value, if there is at least one module temperature value less than or equal to preset minimum temperature value, in order to avoid the potential safety hazard, at first, start heater and water pump in order to heat, furthermore, the module region that the discernment module temperature value is no longer than preset minimum temperature value corresponds, if only one or some module regions have the module temperature value of battery module no longer than preset minimum temperature value, only open the regional inlet and outlet valve of this module, reduce the pipeline of cooling water circulation, reach the purpose of rapid heating up.
Optionally, in another embodiment of the application, the step of turning off the refrigerator and the heater and turning on the water pump if the temperature difference value of at least one module is greater than or equal to the preset maximum temperature difference value and all the module temperature values are greater than the preset minimum temperature value and less than the preset maximum temperature value includes the following steps:
comparing the module temperature value with a preset maximum temperature difference value, and comparing the module temperature value with a preset minimum temperature value and a preset maximum temperature value;
if the temperature difference value of at least one module is greater than or equal to a preset maximum temperature difference value, and the temperature values of all the modules are greater than a preset minimum temperature value and less than a preset maximum temperature value, identifying a module area corresponding to the temperature difference value;
and (4) closing the refrigerator and the heater, and opening the water pump and the inlet and outlet valves of the corresponding module areas.
Specifically, in this embodiment, after the module temperature values of the plurality of area modules are obtained, the module temperature value is compared with the preset maximum temperature difference value, and the module temperature value is compared with the preset minimum temperature value and the preset maximum temperature value, if all the module temperature values are greater than the preset minimum temperature value and less than the preset maximum temperature value, the temperatures of all the battery modules are within the allowable range, and heating or cooling is not required, so that the refrigerator and the heater are turned off. But at least one module temperature difference value is larger than or equal to the preset maximum temperature difference value, the module area corresponding to the at least one temperature difference value is identified, and therefore the water pump and the inlet and outlet valves of the corresponding module area are opened, and the module area with the maximum temperature difference can be rapidly equalized. For example, when the battery module corresponding to the module temperature difference value exceeding the preset maximum temperature difference value is a battery module in the same module area, only the inlet/outlet valve of the module area is opened. If the battery module corresponding to the module temperature difference value exceeding the preset maximum temperature difference value is not the battery module in the same module area, or the module temperature difference values exceed the preset maximum temperature difference value and relate to the module areas, the inlet and outlet valves of the corresponding module areas are opened.
Optionally, in another embodiment of the application, after the step of obtaining module temperature values of a plurality of area modules and calculating a module temperature difference value between any two module temperature values, the method includes the following steps:
comparing the module temperature value with a preset maximum temperature difference value, and comparing the module temperature value with a preset minimum temperature value and a preset maximum temperature value;
and if all the module temperature values are greater than the preset minimum temperature value and less than the preset maximum temperature value and all the module temperature difference values are less than the preset maximum temperature difference value, the refrigerator, the heater and the water pump are shut down.
Specifically, in this embodiment, after the module temperature values of the plurality of area modules are obtained, the module temperature value is compared with the preset maximum temperature value, and the module temperature value is compared with the preset minimum temperature value and the preset maximum temperature value, if all the module temperature values are greater than the preset minimum temperature value and less than the preset maximum temperature value, and all the module temperature difference values are less than the preset maximum temperature value, it is determined that all the battery modules are within the normal temperature range, and therefore, the refrigerator, the heater, and the water pump are turned off
Optionally, in another embodiment of the present application, after the step of turning off the refrigerator and the heater and turning on the water pump, the method comprises the steps of:
detecting the flow of the cooling liquid flowing out of the plurality of module areas through a flow sensor;
and if the flow of the cooling liquid flowing out of the certain module area is detected to be smaller than the preset flow, closing the inlet and outlet valve of the certain module area.
Specifically, in this embodiment, be equipped with flow sensor respectively in the regional business turn over mouth valve department of each module, detect the coolant flow of the regional business turn over of a plurality of modules, especially the coolant flow of outflow through flow sensor, if detect that the coolant flow of the regional outflow of a certain module is less than when predetermineeing the flow, perhaps detect that the coolant flow of the regional outflow of a certain module is less than the coolant flow of entering, explain that coolant liquid is leaked probably to appear, consequently close the regional import and export valve of the module that corresponds.
Optionally, in another embodiment of the application, after the step of "if the flow rate of the cooling liquid flowing out of the certain module area is detected to be smaller than the preset flow rate", the method includes the following steps:
when a trigger signal of a liquid level sensor in a certain module area is received, an inlet and outlet valve of the certain module area is closed, and information is sent to prompt that cooling liquid leaks;
when the trigger signal of the liquid level sensor in a certain module area is not received and the flow of the cooling liquid in the certain module area is detected to be zero, sending information to prompt that the area is blocked.
Specifically, in this embodiment, the liquid leaks: the liquid level sensor receives a trigger signal and judges that leakage exists, the flow sensor feeds back flow values of all regions to the battery management system, the flow of a certain region is reduced but is not zero, the region is indicated to have leakage, the solenoid valve of the region is closed, and the flow is cut off;
pipeline blockage occurs: and the cooling liquid sensor does not receive a trigger signal, and judges that no leakage exists, the flow sensor feeds back flow values of all areas to the battery management system, feeds back a flow value of a certain area to be zero and represents that the area is blocked, and feeds back the flow value to the battery management system, and the battery management system gives an alarm and stops for maintenance.
The embodiment of the invention provides a battery temperature control method, which comprises the following specific steps:
1. monitoring that the maximum value of the cell temperature exceeds the maximum temperature limit value, and starting a refrigerator and a water pump; cooling;
2. monitoring that the maximum value of the temperature of the battery core is lower than the maximum temperature limit value and the temperature difference is higher than the temperature difference limit value, closing the refrigerator and starting the water pump; -carrying out a temperature equalization;
3. monitoring that the maximum temperature value of the battery core is lower than the maximum temperature limit value and the temperature difference is lower than the temperature difference limit value, closing the refrigerator and closing the water pump; - - - -standby
4. Monitoring that the minimum value of the cell temperature is lower than the minimum temperature limit value, and starting a heater and a water pump; heating;
5. monitoring that the minimum value of the temperature of the battery core is higher than the minimum temperature limit value and the temperature difference is higher than the temperature difference limit value, closing the heater and starting the water pump; -carrying out a temperature equalization;
6. monitoring that the minimum value of the temperature of the battery core is higher than the minimum temperature limit value and the temperature difference is lower than the temperature difference limit value, closing the heater and closing the water pump; standby.
As shown in fig. 3, an embodiment of the present invention provides a battery management controller 100, including:
a module temperature obtaining module 110, configured to obtain module temperature values of a plurality of area modules and calculate a module temperature difference value between any two module temperature values;
a module temperature comparing module 120, communicatively connected to the module temperature obtaining module 110, for comparing the module temperature difference value with a preset maximum temperature difference value, and for comparing the module temperature value with a preset minimum temperature value and a preset maximum temperature value; and the number of the first and second groups,
and the module temperature regulating module 130 is in communication connection with the module temperature comparing module 120, and is used for controlling the refrigerator, the heater and the water pump to be started or stopped according to the magnitude relation between the module temperature difference value and the preset maximum temperature difference value and the magnitude relation between the module temperature value and the preset minimum temperature value and the maximum temperature value.
Specifically, the specific implementation steps of each module in this embodiment have been described in the corresponding method embodiments, and are not specifically described here.
An embodiment of the present invention provides a battery temperature control system, including the battery management controller according to the above embodiment.
An embodiment of the present invention provides an automobile, including the battery temperature control system according to the above embodiment.
Based on the same inventive concept, the embodiments of the present application further provide a computer-readable storage medium, on which a computer program is stored, and the computer program, when executed by a processor, implements all or part of the method steps of the above method.
The present invention can implement all or part of the processes of the above methods, and can also be implemented by using a computer program to instruct related hardware, where the computer program can be stored in a computer-readable storage medium, and when the computer program is executed by a processor, the steps of the above method embodiments can be implemented. Wherein the computer program comprises computer program code, which may be in the form of source code, object code, an executable file or some intermediate form, etc. The computer readable medium may include: any entity or device capable of carrying computer program code, recording medium, U-disk, removable hard disk, magnetic disk, optical disk, computer Memory, Read-Only Memory (ROM), Random Access Memory (RAM), electrical carrier wave signals, telecommunications signals, software distribution media, and the like. It should be noted that the computer readable medium may contain other components which may be suitably increased or decreased as required by legislation and patent practice in jurisdictions, for example, in some jurisdictions, in accordance with legislation and patent practice, the computer readable medium does not include electrical carrier signals and telecommunications signals.
Based on the same inventive concept, an embodiment of the present application further provides an electronic device, which includes a memory and a processor, where the memory stores a computer program running on the processor, and the processor executes the computer program to implement all or part of the method steps in the method.
The processor may be a Central Processing Unit (CP U), or may be other general purpose processor, a Digital Signal Processor (DSP), an Application Specific Integrated Circuit (ASIC), an off-the-shelf Programmable Gate Array (fpga) or other Programmable logic device, discrete Gate or transistor logic, discrete hardware components, etc. The general purpose processor may be a microprocessor or the processor may be any conventional processor or the like, the processor being the control center of the computer device and the various interfaces and lines connecting the various parts of the overall computer device.
The memory may be used to store computer programs and/or modules, and the processor may implement various functions of the computer device by executing or executing the computer programs and/or modules stored in the memory, as well as by invoking data stored in the memory. The memory may mainly include a storage program area and a storage data area, wherein the storage program area may store an operating system, an application program required by at least one function (e.g., a sound playing function, an image playing function, etc.); the storage data area may store data (e.g., audio data, video data, etc.) created according to the use of the cellular phone. In addition, the memory may include high speed random access memory, and may also include non-volatile memory, such as a hard disk, a memory, a plug-in hard disk, a Smart Memory Card (SMC), a Secure Digital (SD) Card, a flash memory Card (flash Card), at least one magnetic disk storage device, a flash memory device, or other volatile solid state storage device.
As will be appreciated by one skilled in the art, embodiments of the present invention may be provided as a method, system, server, or computer program product. Accordingly, the present invention may take the form of an entirely hardware embodiment, an entirely software embodiment or an embodiment combining software and hardware aspects. Furthermore, the present invention may take the form of a computer program product embodied on one or more computer-usable storage media (including, but not limited to, disk storage, optical storage, and the like) having computer-usable program code embodied therein.
The present invention has been described with reference to flowchart illustrations and/or block diagrams of methods, apparatus (systems), servers and computer program products according to embodiments of the invention. It will be understood that each flow and/or block of the flow diagrams and/or block diagrams, and combinations of flows and/or blocks in the flow diagrams and/or block diagrams, can be implemented by computer program instructions. These computer program instructions may be provided to a processor of a general purpose computer, special purpose computer, embedded processor, or other programmable data processing apparatus to produce a machine, such that the instructions, which execute via the processor of the computer or other programmable data processing apparatus, create means for implementing the functions specified in the flowchart flow or flows and/or block diagram block or blocks.
These computer program instructions may also be stored in a computer-readable memory that can direct a computer or other programmable data processing apparatus to function in a particular manner, such that the instructions stored in the computer-readable memory produce an article of manufacture including instruction means which implement the function specified in the flowchart flow or flows and/or block diagram block or blocks.
These computer program instructions may also be loaded onto a computer or other programmable data processing apparatus to cause a series of operational steps to be performed on the computer or other programmable apparatus to produce a computer implemented process such that the instructions which execute on the computer or other programmable apparatus provide steps for implementing the functions specified in the flowchart flow or flows and/or block diagram block or blocks.
It will be apparent to those skilled in the art that various changes and modifications may be made in the present invention without departing from the spirit and scope of the invention. Thus, if such modifications and variations of the present invention fall within the scope of the claims of the present invention and their equivalents, the present invention is also intended to include such modifications and variations.
Claims (10)
1. A battery temperature control method is applied to a battery management controller and is characterized by comprising the following steps:
obtaining module temperature values of a plurality of area modules, and calculating a module temperature difference value between any two module temperature values;
if the temperature difference value of at least one module is greater than or equal to the preset maximum temperature difference value, and the temperature values of all the modules are greater than the preset minimum temperature value and less than the preset maximum temperature value, the refrigerator and the heater are turned off, and the water pump is turned on.
2. The method of claim 1, wherein the step of obtaining module temperature values of the plurality of area modules comprises the following steps:
comparing the module temperature value with a preset maximum temperature value;
and if the temperature value of at least one module is greater than or equal to the preset maximum temperature value, identifying the module area corresponding to the temperature value of at least one module, and starting the refrigerator, the water pump and the inlet and outlet valves of the corresponding module area.
3. The method of claim 1, wherein the step of obtaining module temperature values of the plurality of area modules comprises the following steps:
comparing the module temperature value with a preset minimum temperature value;
and if the temperature value of at least one module is less than or equal to the preset minimum temperature value, identifying the module area corresponding to the temperature value of at least one module, and starting the heater, the water pump and the inlet and outlet valves of the corresponding module area.
4. The method as claimed in claim 1, wherein the step of turning off the refrigerator and the heater and turning on the water pump if at least one of the module temperature difference values is greater than or equal to a preset maximum temperature difference value and all of the module temperature values are greater than a preset minimum temperature value and less than a preset maximum temperature value comprises the steps of:
comparing the module temperature value with a preset maximum temperature difference value, and comparing the module temperature value with a preset minimum temperature value and a preset maximum temperature value;
if the temperature difference value of at least one module is greater than or equal to a preset maximum temperature difference value, and the temperature values of all the modules are greater than a preset minimum temperature value and less than a preset maximum temperature value, identifying a module area corresponding to the temperature difference value;
and (4) closing the refrigerator and the heater, and opening the water pump and the inlet and outlet valves of the corresponding module areas.
5. The method of claim 1, wherein the step of obtaining module temperature values for a plurality of local modules and calculating a module temperature difference between any two module temperature values is followed by the steps of:
comparing the module temperature value with a preset maximum temperature difference value, and comparing the module temperature value with a preset minimum temperature value and a preset maximum temperature value;
and if all the module temperature values are greater than the preset minimum temperature value and less than the preset maximum temperature value and all the module temperature difference values are less than the preset maximum temperature difference value, the refrigerator, the heater and the water pump are shut down.
6. The method of claim 1, wherein the step of turning off the refrigerator and the heater and turning on the water pump is followed by the step of:
detecting the flow of the cooling liquid flowing out of the plurality of module areas through a flow sensor;
and if the flow of the cooling liquid flowing out of the certain module area is detected to be smaller than the preset flow, closing the inlet and outlet valve of the certain module area.
7. The method as claimed in claim 6, wherein the step of "if the flow rate of the cooling liquid flowing out from the certain module area is detected to be less than the preset flow rate" comprises the following steps:
when a trigger signal of a liquid level sensor in a certain module area is received, an inlet and outlet valve of the certain module area is closed, and information is sent to prompt that cooling liquid leaks;
when the trigger signal of the liquid level sensor in a certain module area is not received and the flow of the cooling liquid in the certain module area is detected to be zero, sending information to prompt that the area is blocked.
8. A battery management controller, comprising:
the module temperature acquisition module is used for acquiring module temperature values of a plurality of area modules and calculating a module temperature difference value between any two module temperature values;
the module temperature comparison module is in communication connection with the module temperature acquisition module and is used for comparing the module temperature difference value with a preset maximum temperature difference value and comparing the module temperature value with a preset minimum temperature value and a preset maximum temperature value; and the number of the first and second groups,
and the module temperature regulating and controlling module is in communication connection with the module temperature comparing module and is used for controlling the refrigerator, the heater and the water pump to be started or closed according to the size relation between the module temperature difference value and the preset maximum temperature difference value and the size relation between the module temperature value and the preset minimum temperature value and the maximum temperature value.
9. A battery temperature control system comprising the battery management controller of claim 8.
10. An automobile characterized by comprising the battery temperature control system according to claim 9.
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