CN116505134B - Liquid cooling control method, device and equipment for battery and storage medium - Google Patents
Liquid cooling control method, device and equipment for battery and storage medium Download PDFInfo
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- CN116505134B CN116505134B CN202310654407.5A CN202310654407A CN116505134B CN 116505134 B CN116505134 B CN 116505134B CN 202310654407 A CN202310654407 A CN 202310654407A CN 116505134 B CN116505134 B CN 116505134B
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- 238000001816 cooling Methods 0.000 title claims abstract description 190
- 239000007788 liquid Substances 0.000 title claims abstract description 167
- 238000000034 method Methods 0.000 title claims abstract description 58
- 238000010438 heat treatment Methods 0.000 claims abstract description 30
- 239000000498 cooling water Substances 0.000 claims description 56
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 20
- 239000002826 coolant Substances 0.000 claims description 5
- 230000005855 radiation Effects 0.000 claims description 3
- 238000012546 transfer Methods 0.000 claims description 3
- 230000017525 heat dissipation Effects 0.000 abstract description 8
- 230000002035 prolonged effect Effects 0.000 abstract description 5
- 239000011162 core material Substances 0.000 description 15
- 238000012545 processing Methods 0.000 description 7
- 239000000110 cooling liquid Substances 0.000 description 3
- 230000020169 heat generation Effects 0.000 description 3
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 2
- 238000013528 artificial neural network Methods 0.000 description 2
- 238000004590 computer program Methods 0.000 description 2
- 238000013461 design Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 230000007774 longterm Effects 0.000 description 2
- 238000009877 rendering Methods 0.000 description 2
- WHXSMMKQMYFTQS-UHFFFAOYSA-N Lithium Chemical compound [Li] WHXSMMKQMYFTQS-UHFFFAOYSA-N 0.000 description 1
- 230000006978 adaptation Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000006870 function Effects 0.000 description 1
- 230000003993 interaction Effects 0.000 description 1
- 229910052742 iron Inorganic materials 0.000 description 1
- 229910052744 lithium Inorganic materials 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000005057 refrigeration Methods 0.000 description 1
- 238000004904 shortening Methods 0.000 description 1
Classifications
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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
- H01M10/613—Cooling or keeping cold
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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
- H01M10/42—Methods or arrangements for servicing or maintenance of secondary cells or secondary half-cells
- H01M10/44—Methods for charging or discharging
-
- 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
- H01M10/633—Control systems characterised by algorithms, flow charts, software details or the like
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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
-
- 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
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- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Electrochemistry (AREA)
- General Chemical & Material Sciences (AREA)
- Automation & Control Theory (AREA)
- Secondary Cells (AREA)
Abstract
The invention discloses a liquid cooling control method, a device, equipment and a storage medium of a battery, which belong to the technical field of battery temperature control, collect charging parameters in a target charging process, determine a control state of a cooling system based on the collected charging parameters, and predict heating value, battery temperature difference and control flow, so that accurate heat dissipation is realized, the temperature of the target battery is prevented from being too low while heat dissipation is carried out, and the service life of the target battery is effectively prolonged.
Description
Technical Field
The invention belongs to the technical field of battery temperature control, and particularly relates to a liquid cooling control method, device and equipment for a battery and a storage medium.
Background
The long-term operation of the battery at high temperature easily leads to the shortening of the service life of the battery, and the long-term operation at low temperature leads to the insufficient electric quantity of the battery, and meanwhile, the battery is crystallized by a diaphragm inside the battery to cause accidents. At present, a cooling system of a battery is mainly controlled to be opened and closed according to the temperature of the battery, so that the battery system can not be ensured to continuously operate in an optimal working environment, the cooling system is possibly repeatedly started due to the delay of the temperature transmission of the battery, and even the cooling is possibly not timely cooled to cause a high-temperature alarm shutdown fault.
Disclosure of Invention
The invention provides a liquid cooling control method, device and equipment of a battery and a storage medium, which are used for solving the problems in the prior art.
In a first aspect, the present invention provides a liquid cooling control method for a battery, including:
collecting charging parameters of a target battery in the charging process of the target battery, and determining a liquid cooling system start-stop state of the target battery according to the charging parameters, wherein the liquid cooling system start-stop state is used for representing a first start state, a second start state, a third start state, a fourth start state or a stop state of the liquid cooling system;
when the start-stop state of the liquid cooling system is the first start-up state or the third start-up state, predicting the heating value of the target battery to obtain a predicted heating value, and determining the target flow of the cooling water pump of the liquid cooling system corresponding to the target battery based on the predicted heating value; according to the target flow of the cooling water pump, controlling a liquid cooling system to perform a liquid cooling process of the target battery;
when the start-stop state of the liquid cooling system is the second start-up state or the fourth start-up state, controlling the liquid cooling system according to the second start-up state or the fourth start-up state, and performing the liquid cooling process of the target battery;
the first opening state represents the partial flow of the cooling water pump in the liquid cooling system; the second opening state indicates that the cooling water pump in the liquid cooling system is started to realize the full flow; the third opening state represents the partial flow of the cooling water pump in the liquid cooling system, and simultaneously the cold water machine is started; the fourth opening state indicates that the cooling water pump in the liquid cooling system is started to enable the whole flow, and meanwhile, the water chiller is started.
Further, collecting a charging parameter of the target battery in the charging process of the target battery, and determining a start-stop state of a liquid cooling system of the target battery according to the charging parameter, including:
collecting charging power of a target battery and cell temperature in the charging process of the target battery;
and judging whether the charging power of the target battery and the temperature of the battery core meet the set requirements, if so, determining that the start-stop state of the liquid cooling system is a stop state, otherwise, determining that the start-stop state of the liquid cooling system is a first start-up state, a second start-up state, a third start-up state or a fourth start-up state.
Further, determining whether the charging power and the cell temperature of the target battery meet the set requirements includes:
a1, determining the temperature difference of a battery core of a target battery, judging whether the temperature of the battery core is larger than a set first temperature threshold T5 and the temperature difference of the battery core is larger than a set temperature threshold T6, if yes, entering a step A2, otherwise, determining that the start-stop state of the liquid cooling system is a stop state;
a2, judging whether the charging power is between a first power threshold a and a second power threshold b and/or the temperature of the battery cell is between a second temperature threshold T1 and a third temperature threshold T2, if so, determining that the start-stop state of the liquid cooling system is a first start-up state, otherwise, entering a step A3; the first power threshold a is smaller than the second power threshold b, the second temperature threshold T1 is larger than the first temperature threshold T5, and the third temperature threshold T2 is larger than the second temperature threshold T1;
a3, judging whether the charging power is between the second power threshold b and the third power threshold c and/or the temperature of the battery cell is between the third temperature threshold T2 and the fourth temperature threshold T3, if yes, determining that the start-stop state of the liquid cooling system is a second start-up state, otherwise, entering a step A4; wherein the second power threshold b is smaller than the third power threshold c, and the third temperature threshold T2 is smaller than the fourth temperature threshold T3;
a4, judging whether the charging power is between a third power threshold value c and a fourth power threshold value d and/or the temperature of the battery cell is between a fourth temperature threshold value T3 and a fifth temperature threshold value T4, if so, determining that the start-stop state of the liquid cooling system is a third start-up state, otherwise, determining that the charging power is greater than the fourth power threshold value d and/or the temperature of the battery cell is greater than the fifth temperature threshold value T4, and determining that the start-stop state of the liquid cooling system is a fourth start-up state; wherein the third power threshold c is smaller than the fourth power threshold d, and the fourth temperature threshold T3 is smaller than the fifth temperature threshold T4.
Further, the cell temperature difference of the target cell is determined as follows:
△tm1＝w1/(FkK)
wherein Deltatm 1 represents the temperature difference of the battery core of the target battery, namely the temperature rise; w1 represents the total heat exchange amount, F represents the effective heat exchange area of the heat exchanger, K represents the heat transfer coefficient, and K represents the fouling coefficient.
Further, the calorific value of the target battery is predicted, and the predicted calorific value is obtained as follows:
W＝X*(100％-a)*b
wherein W represents a predicted heating value; a represents charging efficiency, and different charging powers correspond to the charging efficiency; x represents the target charge amount, and b represents the cycle number coefficient.
Further, based on the predicted heating value, determining a target flow of the cooling water pump in the liquid cooling system corresponding to the target battery as follows:
Q＝w2/(ρ*△tm2*C)
wherein Q represents a target flow rate, w2 represents a heat radiation amount, ρ represents a density, Δtm2 represents a temperature rise of a coolant in the cooling system, and C represents a specific heat capacity.
Further, according to the target flow of the cooling water pump, the liquid cooling system is controlled to perform a liquid cooling process of the target battery, including: and controlling the flow of the cooling water pump in the liquid cooling system according to the target flow of the cooling water pump, and performing the liquid cooling process of the target battery.
In a second aspect, the invention provides a liquid cooling control device of a battery, which comprises a state determining module, a first liquid cooling control module and a second liquid cooling control module;
the state determining module is used for collecting charging parameters of the target battery in the charging process of the target battery and determining a liquid cooling system start-stop state of the target battery according to the charging parameters, wherein the liquid cooling system start-stop state is used for representing a first start-up state, a second start-up state, a third start-up state, a fourth start-up state or a stop state of the liquid cooling system;
the first liquid cooling control module is used for predicting the heating value of the target battery to obtain the predicted heating value when the start-stop state of the liquid cooling system is the first start-up state or the third start-up state, and determining the target flow of the cooling water pump in the liquid cooling system corresponding to the target battery based on the predicted heating value; according to the target flow of the cooling water pump, controlling a liquid cooling system to perform a liquid cooling process of the target battery;
the second liquid cooling control module is used for controlling the liquid cooling system according to the second opening state or the fourth opening state when the opening and closing state of the liquid cooling system is the second opening state or the fourth opening state, and performing the liquid cooling process of the target battery;
the first opening state represents the partial flow of the cooling water pump in the liquid cooling system; the second opening state indicates that the cooling water pump in the liquid cooling system is started to realize the full flow; the third opening state represents the partial flow of the cooling water pump in the liquid cooling system, and simultaneously the cold water machine is started; the fourth opening state indicates that the cooling water pump in the liquid cooling system is started to enable the whole flow, and meanwhile, the water chiller is started.
In a third aspect, the present invention provides a liquid cooling control device for a battery, including a memory and a processor, where the memory and the processor are connected to each other by a bus;
the memory stores computer-executable instructions;
the processor executes computer-executable instructions stored in the memory, causing the processor to perform the liquid cooling control method of the battery as described in the first aspect.
In a fourth aspect, the present invention provides a computer-readable storage medium having stored therein computer-executable instructions for implementing the liquid cooling control method of the battery of the first aspect when the computer-executable instructions are executed by a processor.
According to the liquid cooling control method, device, equipment and storage medium for the battery, provided by the invention, the charging parameters in the target charging process are collected, the control state of the cooling system is determined based on the collected charging parameters, and the heat productivity, the battery temperature difference and the control flow are predicted, so that the accurate heat dissipation is realized, the temperature of the target battery is prevented from being too low while the heat dissipation is carried out, and the service life of the target battery is effectively prolonged.
Drawings
The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the invention and together with the description, serve to explain the principles of the invention.
Fig. 1 is a flowchart of a liquid cooling control method of a battery according to an embodiment of the present invention.
Fig. 2 is a schematic structural diagram of a liquid cooling control device for a battery according to an embodiment of the present invention.
The system comprises a state determining module 201, a first liquid cooling control module 202 and a second liquid cooling control module 203.
Specific embodiments of the present invention have been shown by way of the above drawings and will be described in more detail below. The drawings and the written description are not intended to limit the scope of the inventive concepts in any way, but rather to illustrate the inventive concepts to those skilled in the art by reference to the specific embodiments.
Detailed Description
Reference will now be made in detail to exemplary embodiments, examples of which are illustrated in the accompanying drawings. When the following description refers to the accompanying drawings, the same numbers in different drawings refer to the same or similar elements, unless otherwise indicated. The implementations described in the following exemplary examples do not represent all implementations consistent with the invention. Rather, they are merely examples of apparatus and methods consistent with aspects of the invention as detailed in the accompanying claims.
Embodiments of the present invention are described in detail below with reference to the accompanying drawings.
Example 1
As shown in fig. 1, an embodiment of the present invention provides a liquid cooling control method for a battery, including:
s101, collecting charging parameters of a target battery in the charging process of the target battery, and determining a liquid cooling system start-stop state of the target battery according to the charging parameters, wherein the liquid cooling system start-stop state is used for representing a first start state, a second start state, a third start state, a fourth start state or a stop state of the liquid cooling system.
Optionally, the charging parameters of the target battery may include charging power and charging temperature of the target battery, and an optimal cooling scheme may be calculated according to the core material type, the structure type, the cooling medium, the battery arrangement structure, the cold plate design, the battery surface temperature, the battery temperature difference, and the external environment temperature parameter, that is, a threshold interval corresponding to the first open state, the second open state, the third open state, the fourth open state, or the stop state of the liquid cooling system is determined, and the charging power and the charging temperature are compared with the threshold interval, so that a cooling scheme of the target battery may be determined, and accurate cooling is achieved.
It should be noted that, the threshold interval may be a preset parameter, or may be a parameter generated by man-machine interaction.
S102, when the start-stop state of the liquid cooling system is the first start-up state or the third start-up state, predicting the heating value of the target battery to obtain a predicted heating value, and determining the target flow of the cooling water pump in the liquid cooling system corresponding to the target battery based on the predicted heating value. And controlling a liquid cooling system according to the target flow of the cooling water pump to perform the liquid cooling process of the target battery.
The first opening state and the third opening state only need to open partial flow of the cooling water pump, so that the heat productivity of the target battery can be predicted, heat required to be dissipated can be obtained, the target flow of the cooling water pump is determined based on the heat productivity, and the accurate start and stop of the cooling system can be realized. The battery temperature is prevented from being too low while the battery temperature is prevented from being too high, and the service life of the target battery is effectively prolonged.
And S103, when the start-stop state of the liquid cooling system is the second start-up state or the fourth start-up state, controlling the liquid cooling system according to the second start-up state or the fourth start-up state, and performing the liquid cooling process of the target battery.
The cooling water pump is used for inputting cooling liquid into the heat exchanger so as to realize natural cooling heat exchange. The cold water machine has a refrigeration function, the temperature of the cooling liquid can be reduced, and after the cold water machine is started, the heat exchanger is adopted for forced cooling, so that a stronger cooling effect is realized. When the temperature of the battery or the charging power is larger than a certain threshold value, the cooling water pump is required to be fully started, and the water pump flow is not required to be acquired at the moment, so that the control can be directly performed.
The first opening state represents the partial flow of the cooling water pump in the liquid cooling system. The second opening state indicates that the cooling water pump in the liquid cooling system is started to realize the full flow. The third opening state represents the partial flow of the cooling water pump in the liquid cooling system, and simultaneously the water chiller is started. The fourth opening state indicates that the cooling water pump in the liquid cooling system is started to enable the whole flow, and meanwhile, the water chiller is started.
According to the liquid cooling control method for the battery, provided by the embodiment, through carrying out the charging parameters of the target battery, when the set requirements are met, the cooling is started, and the situation that the temperature of the target battery is too high in the charging process can be effectively avoided. And different cooling schemes realize different cooling effects, can effectively avoid overcooling, and effectively prolong the service life of the target battery.
In one possible implementation manner, collecting a charging parameter of a target battery during a charging process of the target battery, and determining a start-stop state of a liquid cooling system of the target battery according to the charging parameter includes:
and collecting the charging power and the cell temperature of the target battery in the charging process of the target battery.
And judging whether the charging power of the target battery and the temperature of the battery core meet the set requirements, if so, determining that the start-stop state of the liquid cooling system is a stop state, otherwise, determining that the start-stop state of the liquid cooling system is a first start-up state, a second start-up state, a third start-up state or a fourth start-up state.
In one possible implementation manner, determining whether the charging power and the cell temperature of the target battery meet the set requirements includes:
a1, determining the temperature difference of a battery core of a target battery, judging whether the temperature of the battery core is larger than a set first temperature threshold T5 and the temperature difference of the battery core is larger than a set temperature threshold T6, if yes, entering a step A2, otherwise, determining that the start-stop state of the liquid cooling system is a stop state;
a2, judging whether the charging power is between a first power threshold a and a second power threshold b and/or the temperature of the battery cell is between a second temperature threshold T1 and a third temperature threshold T2, if so, determining that the start-stop state of the liquid cooling system is a first start-up state, otherwise, entering a step A3; the first power threshold a is smaller than the second power threshold b, the second temperature threshold T1 is larger than the first temperature threshold T5, and the third temperature threshold T2 is larger than the second temperature threshold T1;
a3, judging whether the charging power is between the second power threshold b and the third power threshold c and/or the temperature of the battery cell is between the third temperature threshold T2 and the fourth temperature threshold T3, if yes, determining that the start-stop state of the liquid cooling system is a second start-up state, otherwise, entering a step A4; wherein the second power threshold b is smaller than the third power threshold c, and the third temperature threshold T2 is smaller than the fourth temperature threshold T3;
a4, judging whether the charging power is between a third power threshold value c and a fourth power threshold value d and/or the temperature of the battery cell is between a fourth temperature threshold value T3 and a fifth temperature threshold value T4, if so, determining that the start-stop state of the liquid cooling system is a third start-up state, otherwise, determining that the charging power is greater than the fourth power threshold value d and/or the temperature of the battery cell is greater than the fifth temperature threshold value T4, and determining that the start-stop state of the liquid cooling system is a fourth start-up state; wherein the third power threshold c is smaller than the fourth power threshold d, and the fourth temperature threshold T3 is smaller than the fifth temperature threshold T4.
In this embodiment, the first temperature threshold T5, the second temperature threshold T1, the third temperature threshold T2, the fourth temperature threshold T3, and the fifth temperature threshold T4 may be set with reference to the core material type, the structure type, the cooling medium, the battery arrangement structure, the cold plate design, the battery surface temperature, the battery temperature difference, and the external environment temperature parameter.
In one possible implementation, the cell temperature difference of the target cell is determined as follows:
△tm1＝w1/(FkK)
wherein Deltatm 1 represents the temperature difference of the battery core of the target battery, namely the temperature rise; w1 represents total heat exchange amount, F represents effective heat exchange area of the heat exchanger, and K represents heat transfer coefficient; k represents a fouling factor, generally 0.8 to 0.9. According to the battery structure and arrangement form, the temperature rise of the battery can be predicted, and then whether the temperature protection occurs is predicted through the current environment temperature, if the temperature protection occurs is predicted, the liquid cooling mode is started.
When the temperature rise of the target battery is large, the target battery needs to dissipate heat, so that the determination of the cooling scheme can be performed.
In one possible embodiment, the predicted heat generation amount of the target battery is predicted, and the predicted heat generation amount is obtained as follows:
W＝X*(100％-a)*b
wherein W represents a predicted heating value; a represents charging efficiency, and different charging powers correspond to the charging efficiency; x represents the target charge amount, and b represents the cycle number coefficient. The heat generation amount is predicted according to the charging form (charging power, required charging electric quantity) and the battery type (ternary/lithium iron in different cycle times).
Alternatively, a heating value threshold may be set, and when the heating value is greater than the heating value threshold, cooling may be turned on. The specific cooling scheme can be determined according to the actual situation.
In one possible implementation manner, based on the predicted heating value, the target flow rate of the cooling water pump in the liquid cooling system corresponding to the target battery is determined as follows:
Q＝w2/(ρ*△tm2*C)
wherein Q represents a target flow rate, w2 represents a heat radiation amount, ρ represents a density, Δtm2 represents a temperature rise of a coolant in the cooling system, and C represents a specific heat capacity. The temperature rise delta tm2 of the cooling liquid in the cooling system is used for representing the temperature of the water outlet minus the temperature of the water inlet.
When the heat dissipation capacity is less, the cooling water machine is not required to be started, the heat dissipation requirement can be met only by starting part of the cooling water pump, and the target flow of the cooling water pump can be determined at the moment, so that the cooling water pump is accurately started, the charging temperature of the target battery is positioned in a certain range, and the service life of the target battery can be effectively prolonged.
According to different media (different densities and specific heat capacities) and allowable temperature differences, the required flow and the water inlet temperature can be determined, and whether the water pump power and the water chiller need to participate or not can be determined.
In one possible implementation manner, according to the target flow rate of the cooling water pump, the liquid cooling system is controlled to perform a liquid cooling process of the target battery, including: and controlling the flow of the cooling water pump in the liquid cooling system according to the target flow of the cooling water pump, and performing the liquid cooling process of the target battery.
Example 2
As shown in fig. 2, the present invention provides a liquid cooling control device for a battery, which includes a state determining module 201, a first liquid cooling control module 202, and a second liquid cooling control module 203;
the state determining module 201 is configured to collect a charging parameter of a target battery during a charging process of the target battery, and determine a start-stop state of a liquid cooling system of the target battery according to the charging parameter, where the start-stop state of the liquid cooling system is used to characterize a first start-up state, a second start-up state, a third start-up state, a fourth start-up state, or a stop state of the liquid cooling system;
the first liquid cooling control module 202 is configured to predict a heating value of the target battery when the start-stop state of the liquid cooling system is the first start-up state or the third start-up state, obtain a predicted heating value, and determine a target flow rate of the cooling water pump in the liquid cooling system corresponding to the target battery based on the predicted heating value; according to the target flow of the cooling water pump, controlling a liquid cooling system to perform a liquid cooling process of the target battery;
the second liquid cooling control module 203 is configured to control the liquid cooling system according to the second open state or the fourth open state when the open-close state of the liquid cooling system is the second open state or the fourth open state, and perform a liquid cooling process of the target battery;
the first opening state represents the partial flow of the cooling water pump in the liquid cooling system; the second opening state indicates that the cooling water pump in the liquid cooling system is started to realize the full flow; the third opening state represents the partial flow of the cooling water pump in the liquid cooling system, and simultaneously the cold water machine is started; the fourth opening state indicates that the cooling water pump in the liquid cooling system is started to enable the whole flow, and meanwhile, the water chiller is started.
The liquid cooling control device for a battery provided in this embodiment may execute the method technical scheme shown in embodiment 1, and the principle and the beneficial effects thereof are similar, and are not described herein again.
Example 3
The invention provides liquid cooling control equipment of a battery, which comprises a memory and a processor, wherein the memory and the processor are connected with each other through a bus;
the memory stores computer-executable instructions;
the processor executes computer-executable instructions stored in the memory, causing the processor to perform the liquid cooling control method of the battery as described in embodiment 1.
By way of specific example, the Memory may include, but is not limited to, random access Memory (random access Memory, RAM), read Only Memory (ROM), flash Memory (Flash Memory), first-in-first-out Memory (First Input First Output, FIFO) and/or first-in-last-out Memory (First In Last Out, FILO), and the like; in particular, the processor may include one or more processing cores, such as a 4-core processor, an 8-core processor, or the like. The processor may be implemented in at least one hardware form of DSP (Digital Signal Processing ), FPGA (Field-Programmable Gate Array, field programmable gate array), PLA (Programmable Logic Array ), and may also include a main processor and a coprocessor, where the main processor is a processor for processing data in an awake state, and is also called CPU (Central Processing Unit ); a coprocessor is a low-power processor for processing data in a standby state.
In some embodiments, the processor may be integrated with a GPU (Graphics Processing Unit, image processor) for taking charge of rendering and rendering of content required to be displayed by the display screen, for example, the processor may not be limited to a microprocessor employing a model number of STM32F105 family, a reduced instruction set computer (reduced instruction set computer, RISC) microprocessor, an X86 or other architecture processor, or a processor integrating an embedded neural network processor (neural-network processing units, NPU); the transceiver may be, but is not limited to, a wireless fidelity (WIFI) wireless transceiver, a bluetooth wireless transceiver, a general packet radio service technology (General Packet Radio Service, GPRS) wireless transceiver, a ZigBee protocol (low power local area network protocol based on the ieee802.15.4 standard), a 3G transceiver, a 4G transceiver, and/or a 5G transceiver, etc. In addition, the device may include, but is not limited to, a power module, a display screen, and other necessary components.
Example 4
The present invention provides a computer-readable storage medium having stored therein computer-executable instructions for implementing the liquid cooling control method of the battery of embodiment 1 when the computer-executable instructions are executed by a processor.
Example 5
Embodiments of the present invention may also provide a computer program product comprising a computer program which, when executed by a processor, implements a liquid cooling control method for a battery as described in embodiment 1.
According to the liquid cooling control method, device, equipment and storage medium for the battery, provided by the invention, the charging parameters in the target charging process are collected, the control state of the cooling system is determined based on the collected charging parameters, and the heat productivity, the battery temperature difference and the control flow are predicted, so that the accurate heat dissipation is realized, the temperature of the target battery is prevented from being too low while the heat dissipation is carried out, and the service life of the target battery is effectively prolonged.
Other embodiments of the invention will be apparent to those skilled in the art from consideration of the specification and practice of the invention disclosed herein. This invention is intended to cover any variations, uses, or adaptations of the invention following, in general, the principles of the invention and including such departures from the present disclosure as come within known or customary practice within the art to which the invention pertains. It is intended that the specification and examples be considered as exemplary only, with a true scope and spirit of the invention being indicated by the following claims.
It is to be understood that the invention is not limited to the precise arrangements and instrumentalities shown in the drawings, which have been described above, and that various modifications and changes may be effected without departing from the scope thereof. The scope of the invention is limited only by the appended claims.
Claims (5)
1. A liquid cooling control method of a battery, comprising:
collecting charging parameters of a target battery in the charging process of the target battery, and determining a liquid cooling system start-stop state of the target battery according to the charging parameters, wherein the liquid cooling system start-stop state is used for representing a first start state, a second start state, a third start state, a fourth start state or a stop state of the liquid cooling system;
when the start-stop state of the liquid cooling system is the first start-up state or the third start-up state, predicting the heating value of the target battery to obtain a predicted heating value, and determining the target flow of the cooling water pump of the liquid cooling system corresponding to the target battery based on the predicted heating value; according to the target flow of the cooling water pump, controlling a liquid cooling system to perform a liquid cooling process of the target battery;
when the start-stop state of the liquid cooling system is the second start-up state or the fourth start-up state, controlling the liquid cooling system according to the second start-up state or the fourth start-up state, and performing the liquid cooling process of the target battery;
the first opening state represents the partial flow of the cooling water pump in the liquid cooling system; the second opening state indicates that the cooling water pump in the liquid cooling system is started to realize the full flow; the third opening state represents the partial flow of the cooling water pump in the liquid cooling system, and simultaneously the cold water machine is started; the fourth opening state indicates that the cooling water pump in the liquid cooling system is started to enable the whole flow rate and the water chiller is started at the same time;
collecting charging parameters of the target battery in the charging process of the target battery, and determining the start-stop state of a liquid cooling system of the target battery according to the charging parameters, wherein the method comprises the following steps:
collecting charging power of a target battery and cell temperature in the charging process of the target battery;
judging whether the charging power of the target battery and the temperature of the battery core meet the set requirements, if so, determining that the start-stop state of the liquid cooling system is a stop state, otherwise, determining that the start-stop state of the liquid cooling system is a first start-up state, a second start-up state, a third start-up state or a fourth start-up state;
judging whether the charging power and the cell temperature of the target battery meet the set requirements or not comprises the following steps:
a1, determining the temperature difference of a battery core of a target battery, judging whether the temperature of the battery core is larger than a set first temperature threshold T5 and the temperature difference of the battery core is larger than a set temperature threshold T6, if yes, entering a step A2, otherwise, determining that the start-stop state of the liquid cooling system is a stop state;
a2, judging whether the charging power is between a first power threshold value a and a second power threshold value b and the temperature of the battery cell is between a second temperature threshold value T1 and a third temperature threshold value T2, if yes, determining that the start-stop state of the liquid cooling system is a first start-up state, otherwise, entering a step A3, wherein the first power threshold value a is smaller than the second power threshold value b, the second temperature threshold value T1 is larger than a first temperature threshold value T5, and the third temperature threshold value T2 is larger than the second temperature threshold value T1;
a3, judging whether the charging power is between the second power threshold b and the third power threshold c and the temperature of the battery cell is between the third temperature threshold T2 and the fourth temperature threshold T3, if yes, determining that the start-stop state of the liquid cooling system is a second start-up state, otherwise, entering the step A4, wherein the second power threshold b is smaller than the third power threshold c, and the third temperature threshold T2 is smaller than the fourth temperature threshold T3;
a4, judging whether the charging power is between a third power threshold value c and a fourth power threshold value d and the temperature of the battery core is between a fourth temperature threshold value T3 and a fifth temperature threshold value T4, if yes, determining that the start-stop state of the liquid cooling system is a third start-up state, otherwise, determining that the charging power is greater than the fourth power threshold value d and the temperature of the battery core is greater than the fifth temperature threshold value T4, and determining that the start-stop state of the liquid cooling system is a fourth start-up state, wherein the third power threshold value c is smaller than the fourth power threshold value d, and the fourth temperature threshold value T3 is smaller than the fifth temperature threshold value T4;
the cell temperature difference of the target cell is determined as follows:
△tm1＝w1/(FkK)
wherein Deltatm 1 represents the temperature difference of the battery core of the target battery, namely the temperature rise; w1 represents total heat exchange amount, F represents effective heat exchange area of the heat exchanger, K represents heat transfer coefficient, and K represents fouling coefficient;
predicting the heating value of the target battery to obtain the predicted heating value as follows:
W＝X*(100％-a)*b
wherein W represents a predicted heating value; a represents charging efficiency, and different charging powers correspond to the charging efficiency; x represents a target charging electric quantity, and b represents a cycle number coefficient;
based on the predicted heating value, determining the target flow of the cooling water pump in the liquid cooling system corresponding to the target battery as follows:
Q＝w2/(ρ*△tm2*C)
wherein Q represents a target flow rate, w2 represents a heat radiation amount, ρ represents a density, Δtm2 represents a temperature rise of a coolant in the cooling system, and C represents a specific heat capacity.
2. The method according to claim 1, wherein the liquid cooling system is controlled according to the target flow rate of the cooling water pump to perform the liquid cooling process of the target battery, comprising: and controlling the flow of the cooling water pump in the liquid cooling system according to the target flow of the cooling water pump, and performing the liquid cooling process of the target battery.
3. A liquid cooling control device for a battery for executing the liquid cooling control method for a battery according to any one of claims 1 to 2, characterized by comprising a state determination module, a first liquid cooling control module, and a second liquid cooling control module;
the state determining module is used for collecting charging parameters of the target battery in the charging process of the target battery and determining a liquid cooling system start-stop state of the target battery according to the charging parameters, wherein the liquid cooling system start-stop state is used for representing a first start-up state, a second start-up state, a third start-up state, a fourth start-up state or a stop state of the liquid cooling system;
the first liquid cooling control module is used for predicting the heating value of the target battery to obtain the predicted heating value when the start-stop state of the liquid cooling system is the first start-up state or the third start-up state, and determining the target flow of the cooling water pump in the liquid cooling system corresponding to the target battery based on the predicted heating value; according to the target flow of the cooling water pump, controlling a liquid cooling system to perform a liquid cooling process of the target battery;
the second liquid cooling control module is used for controlling the liquid cooling system according to the second opening state or the fourth opening state when the opening and closing state of the liquid cooling system is the second opening state or the fourth opening state, and performing the liquid cooling process of the target battery;
the first opening state represents the partial flow of the cooling water pump in the liquid cooling system; the second opening state indicates that the cooling water pump in the liquid cooling system is started to realize the full flow; the third opening state represents the partial flow of the cooling water pump in the liquid cooling system, and simultaneously the cold water machine is started; the fourth opening state indicates that the cooling water pump in the liquid cooling system is started to enable the whole flow, and meanwhile, the water chiller is started.
4. The liquid cooling control device of the battery is characterized by comprising a memory and a processor, wherein the memory and the processor are connected through a bus;
the memory stores computer-executable instructions;
the processor executes computer-executable instructions stored in the memory, causing the processor to perform the liquid cooling control method of the battery according to any one of claims 1 to 2.
5. A computer readable storage medium having stored therein computer executable instructions for implementing the liquid cooling control method of the battery of any one of claims 1 to 2 when the computer executable instructions are executed by a processor.
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| CN114122556A (en) * | 2021-10-18 | 2022-03-01 | 三一重机有限公司 | Battery cooling method, system and electric working machine |
| CN114628805A (en) * | 2022-03-28 | 2022-06-14 | 重庆金康赛力斯新能源汽车设计院有限公司 | Battery cooling method, management system and vehicle-mounted terminal |
| CN115503539A (en) * | 2022-10-31 | 2022-12-23 | 东风商用车有限公司 | Charging system and method with battery temperature control function |
| FR3127846A1 (en) * | 2021-10-06 | 2023-04-07 | Psa Automobiles Sa | METHOD FOR MANAGING RECHARGE OF A VEHICLE BATTERY |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| FR3127846A1 (en) * | 2021-10-06 | 2023-04-07 | Psa Automobiles Sa | METHOD FOR MANAGING RECHARGE OF A VEHICLE BATTERY |
| CN114122556A (en) * | 2021-10-18 | 2022-03-01 | 三一重机有限公司 | Battery cooling method, system and electric working machine |
| CN114628805A (en) * | 2022-03-28 | 2022-06-14 | 重庆金康赛力斯新能源汽车设计院有限公司 | Battery cooling method, management system and vehicle-mounted terminal |
| CN115503539A (en) * | 2022-10-31 | 2022-12-23 | 东风商用车有限公司 | Charging system and method with battery temperature control function |
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