CN114810648A - Speed regulation method, heat dissipation device, electronic equipment and storage medium - Google Patents
Speed regulation method, heat dissipation device, electronic equipment and storage medium Download PDFInfo
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- 230000033228 biological regulation Effects 0.000 title claims abstract description 38
- 230000017525 heat dissipation Effects 0.000 title claims abstract description 38
- 238000003860 storage Methods 0.000 title claims abstract description 15
- 230000008859 change Effects 0.000 claims abstract description 73
- 230000007704 transition Effects 0.000 claims abstract description 19
- 238000005070 sampling Methods 0.000 claims description 16
- 238000007599 discharging Methods 0.000 claims description 11
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- 238000010438 heat treatment Methods 0.000 claims description 8
- 238000004519 manufacturing process Methods 0.000 claims description 5
- 230000020169 heat generation Effects 0.000 claims description 4
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D27/00—Control, e.g. regulation, of pumps, pumping installations or pumping systems specially adapted for elastic fluids
- F04D27/004—Control, e.g. regulation, of pumps, pumping installations or pumping systems specially adapted for elastic fluids by varying driving speed
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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
- H01M10/60—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
- H01M10/656—Means for temperature control structurally associated with the cells characterised by the type of heat-exchange fluid
- H01M10/6561—Gases
- H01M10/6563—Gases with forced flow, e.g. by blowers
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F05—INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF CLASSES F01-F04
- F05D—INDEXING SCHEME FOR ASPECTS RELATING TO NON-POSITIVE-DISPLACEMENT MACHINES OR ENGINES, GAS-TURBINES OR JET-PROPULSION PLANTS
- F05D2270/00—Control
- F05D2270/30—Control parameters, e.g. input parameters
- F05D2270/303—Temperature
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Abstract
The invention discloses a speed regulation method, a heat dissipation device, electronic equipment and a storage medium. The speed regulation method is applied to a heat dissipation device, the heat dissipation device is used for carrying out heat dissipation operation on a battery module, and the speed regulation method comprises the following steps: acquiring the voltage change rate of the battery module; determining the working state of the battery module according to the voltage change rate; the working state comprises any one of a charge-discharge sudden change state, a charge-discharge transition state and a charge-discharge stable state; obtaining at least one preset algorithm from a preset algorithm library according to the working state, and calculating according to the at least one preset algorithm to obtain a target rotating speed; and adjusting the heat dissipation device according to the target rotating speed. According to the embodiment of the invention, different speed regulation methods can be used according to different working states of the battery module, so that the problem caused by a single linear control mode in the related technology is avoided to a certain extent.
Description
Technical Field
The present invention relates to the field of speed regulation technologies, and in particular, to a speed regulation method, a heat dissipation device, an electronic device, and a storage medium.
Background
At present, in order to ensure that the working temperature of the battery cell in the battery module is normal, namely the working temperature of the battery cell is within a preset temperature range, a fan and other heat dissipation devices can be configured to perform heat dissipation operation on the battery module.
In the related art, the fan is regulated by a method for determining the rotating speed of the fan according to the distribution interval of the current temperature of the battery module. However, the above-mentioned control method for the fan rotation speed is linear control, and thus problems such as an excessively large speed regulation range, an excessively large power consumption, and a large fan noise are likely to occur.
Disclosure of Invention
The present invention is directed to solving at least one of the problems of the prior art. Therefore, the invention provides a speed regulation method, a heat dissipation device, electronic equipment and a storage medium, which can use different speed regulation methods according to different working states of a battery module, thereby avoiding the problems caused by a single linear control mode in the related technology to a certain extent.
The speed regulation method according to the embodiment of the first aspect of the invention is applied to a heat dissipation device, wherein the heat dissipation device is used for performing heat dissipation operation on a battery module, and the speed regulation method comprises the following steps:
acquiring the voltage change rate of the battery module;
determining the working state of the battery module according to the voltage change rate; the working state comprises any one of a charge-discharge sudden change state, a charge-discharge transition state and a charge-discharge stable state;
obtaining at least one preset algorithm from a preset algorithm library according to the working state, and calculating according to the at least one preset algorithm to obtain a target rotating speed;
and adjusting the heat dissipation device according to the target rotating speed.
The speed regulation method provided by the embodiment of the invention at least has the following beneficial effects: the working state of the battery module is divided, the current working state of the battery module is determined through the voltage change rate, one or more preset algorithms are selected from the preset algorithm library according to the difference of the current working state to calculate the target speed of the heat dissipation device, so that the accurate control of the speed of the heat dissipation device is realized, and the problems of overlarge speed regulation range, overlarge energy consumption, high fan noise and the like caused by a single linear control method in the related technology are avoided to a certain extent.
According to some embodiments of the invention, the target rotational speed comprises a first target rotational speed, and the preset algorithm comprises a first algorithm;
the calculating the target rotating speed according to at least one preset algorithm comprises the following steps: calculating to obtain the first target rotating speed according to the first algorithm;
the calculating the target rotating speed according to the first algorithm comprises:
acquiring a voltage value and a current value of the battery module within a preset time period;
obtaining heating power according to the voltage value and the current value, and obtaining the heat generation quantity of the battery module in the preset time period according to the heating power;
calculating the heat exchange quantity according to the heat production quantity;
and obtaining the first target rotating speed according to the heat exchange amount.
According to some embodiments of the invention, the target rotational speed comprises a second target rotational speed, and the preset algorithm further comprises a second algorithm;
the calculating according to at least one preset algorithm to obtain the target rotating speed further comprises: calculating to obtain the second target rotating speed according to the second algorithm;
the calculating the target rotating speed according to the second algorithm comprises the following steps:
acquiring an average temperature value of the battery module in n first sampling periods; wherein n is a positive integer greater than or equal to 1, and the n first sampling periods are located in the same working state;
calculating to obtain a duty ratio according to the average temperature value, a first preset adjusting factor and a preset reference temperature value;
and obtaining the second target rotating speed according to the duty ratio.
According to some embodiments of the invention, the target rotational speed comprises a third target rotational speed, and the preset algorithm further comprises a third algorithm;
the calculating according to at least one preset algorithm to obtain the target rotating speed further comprises: calculating to obtain the third target rotating speed according to the third algorithm;
the calculating the target rotating speed according to the third algorithm includes:
acquiring a first temperature change value of the battery module in a preset first time period, and acquiring a second temperature change value of the battery module in a preset second time period; wherein the first time interval and the second time interval are two adjacent time intervals;
calculating according to the first temperature change value, the second temperature change value and a second sampling period to obtain a temperature change rate;
and obtaining the third target rotating speed according to the temperature change rate and a second preset adjusting factor.
According to some embodiments of the invention, the determining the operating state of the battery module according to the voltage change rate includes:
if the voltage change rate is smaller than a first preset threshold value, determining that the working state is the charging and discharging stable state;
if the voltage change rate is greater than the first preset threshold and less than a second preset threshold, determining that the working state is the charge-discharge transition state;
and if the voltage change rate is greater than the second preset threshold value, determining that the working state is the charging and discharging sudden change state.
The heat dissipating device according to an embodiment of the second aspect of the present invention includes:
the method comprises the steps of presetting an algorithm library, wherein the preset algorithm library is used for storing a first algorithm, a second algorithm and a third algorithm;
a master control module, configured to execute the speed regulation method according to any one of the first aspect.
An electronic device according to an embodiment of the third aspect of the present invention includes: at least one processor;
at least one memory for storing at least one program;
when the at least one program is executed by the at least one processor, the at least one processor is caused to implement the throttling method according to the first aspect.
The computer readable storage medium according to an embodiment of the fourth aspect of the present invention has stored therein processor executable instructions, which when executed by a processor, are for implementing the pacing method according to any one of the first aspect.
Additional aspects and advantages of the invention will be set forth in part in the description which follows and, in part, will be obvious from the description, or may be learned by practice of the invention.
Drawings
The invention is further described with reference to the following figures and examples, in which:
FIG. 1 is a schematic flow chart of a speed regulating method according to an embodiment of the present invention;
FIG. 2 is another schematic flow chart of a speed regulating method according to an embodiment of the present invention;
FIG. 3 is another schematic flow chart of a speed control method according to an embodiment of the present invention;
FIG. 4 is another schematic flow chart of a speed control method according to an embodiment of the present invention;
fig. 5 is a block diagram of a heat dissipation device according to an embodiment of the invention.
Detailed Description
Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the accompanying drawings are illustrative only for the purpose of explaining the present invention, and are not to be construed as limiting the present invention.
In the description of the present invention, it should be understood that the orientation or positional relationship referred to in the description of the orientation, such as the upper, lower, front, rear, left, right, etc., is based on the orientation or positional relationship shown in the drawings, and is only for convenience of description and simplification of description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention.
In the description of the present invention, the meaning of a plurality is one or more, the meaning of a plurality is two or more, and the above, below, exceeding, etc. are understood as excluding the present numbers, and the above, below, within, etc. are understood as including the present numbers. If the first and second are described for the purpose of distinguishing technical features, they are not to be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated or implicitly indicating the precedence of the technical features indicated.
In the description of the present invention, unless otherwise explicitly limited, terms such as arrangement, installation, connection and the like should be understood in a broad sense, and those skilled in the art can reasonably determine the specific meanings of the above terms in the present invention in combination with the specific contents of the technical solutions.
In the description of the present invention, reference to the description of the terms "one embodiment," "some embodiments," "an illustrative embodiment," "an example," "a specific example," or "some examples," etc., means that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the present invention. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.
Referring to fig. 1, an embodiment of the present application provides a speed regulating method applied to a heat dissipation device for performing a heat dissipation operation on a battery module, where the speed regulating method includes, but is not limited to, steps S110 to S140.
S110, acquiring the voltage change rate of the battery module;
s120, determining the working state of the battery module according to the voltage change rate; the working mode comprises any one of a charge-discharge sudden change state, a charge-discharge transition state and a charge-discharge stable state;
s130, obtaining at least one preset algorithm from a preset algorithm library according to the working state, and calculating according to the at least one preset algorithm to obtain a target rotating speed;
and S140, adjusting the heat dissipation device according to the target rotating speed.
Specifically, according to the characteristics of the operation condition of the battery module, the working state of the battery module in the charging and discharging operation can be divided into a charging and discharging drastic change state, a charging and discharging transition state and a charging and discharging stable state. The working state is divided into examples according to the voltage change rate, a first preset threshold value and a second preset threshold value are set, and the first preset threshold value is smaller than the second preset threshold value. When the voltage change rate is smaller than a first preset threshold value, namely the voltage change of the battery module is relatively smooth in a certain time period, determining that the battery module is in a charge-discharge stable state in the time period; when the voltage change rate is greater than a first preset threshold and less than a second preset threshold, namely the voltage of the battery module changes in a certain time period, but the change trend is not large, the battery module is determined to be in a charge-discharge transition state in the time period; and when the voltage change rate is greater than a second preset threshold value, namely the voltage change trend of the battery module is larger in a certain time period, determining that the battery module is in a charge-discharge drastic change state.
And acquiring the voltage change rate of the battery module corresponding to the heat dissipation device to be controlled, and determining the current working state of the battery module according to the method and the voltage change rate. And inquiring a preset algorithm library according to the current working state of the battery module to obtain a preset algorithm corresponding to the current working state. The preset algorithm library stores working states such as a charge-discharge drastic change state, a charge-discharge transition state, a charge-discharge stable state and the like, and preset algorithms corresponding to each working state. It is understood that, according to the control requirement, for example, according to the requirements of control speed, accuracy, energy consumption, etc., one working state may correspond to one or more preset algorithms, and the embodiment of the present application is not particularly limited. And calculating the speed of the heat dissipation device according to the preset algorithm obtained by inquiry to obtain a target speed, and adjusting the heat dissipation device according to the target speed, so as to ensure that the temperature of the battery module is kept within a preset range.
According to the speed regulation method, the working states of the battery module are divided, the current working state of the battery module is determined through the voltage change rate, one or more preset algorithms are selected from the preset algorithm library according to the difference of the current working states to calculate the target speed of the heat dissipation device, so that the speed of the heat dissipation device is accurately controlled, and the problems of overlarge speed regulation range, overlarge energy consumption, high fan noise and the like caused by a single linear control method in the related technology are avoided to a certain extent.
Referring to fig. 2, in some embodiments, the target rotational speed includes a first target rotational speed, the preset algorithm includes a first algorithm, and the step S130 includes: and calculating to obtain a first target rotating speed according to a first algorithm.
The step of calculating the first target rotation speed according to the first algorithm includes, but is not limited to, substeps S210 to S240.
S210, acquiring a voltage value and a current value of the battery module in a preset time period;
s220, obtaining heating power according to the voltage value and the current value, and obtaining the heat generation quantity of the battery module in a preset time period according to the heating power;
s230, calculating according to the heat production quantity to obtain the heat exchange quantity;
and S240, obtaining a first target rotating speed according to the heat exchange quantity.
Specifically, take the battery module in a stable charging and discharging state as an example. And when the working state of the battery module at the moment T is determined to be a charging and discharging stable state through the voltage change rate of the battery module, acquiring a voltage value U and a current value I of the battery module at two ends of the moment T-1 according to data recorded before the moment T. And calculating the heating power P (IU) of the battery module at the time T-1 according to the voltage value U and the current value I. Calculating a plurality of heating powers P of the battery module in the preset time period t1 according to the method, and thus obtaining the heat generation quantity Q of the battery module in the preset time period t1 by performing time integration on the preset time period t1 Production of heat Further, the heat exchange amount Q required for heat exchange when the battery module temperature is maintained within the predetermined range is obtained by conversion according to the following expression (1) Heat exchange 。
Q Production of heat -Q Heat exchange .(1)
Wherein C represents the specific heat capacity of the battery module material, M represents the mass of the battery module, and Δ T represents the temperature rise of the battery module in the preset time period. According to the heat exchange quantity Q Heat exchange The relation with the rotational speed of the heat-dissipating device is used to obtain a first target rotational speed, such as a preset heat exchange quantity Q Heat exchange Linear relation with the rotating speed of the heat sink, the heat exchange quantity Q calculated according to the method Heat exchange And converting the target speed by a preset linear factor. And adjusting the heat dissipation device according to the target speed, thereby ensuring that the temperature of the battery module is kept within a preset range. It can be understood that, when the first algorithm is mapped with the charge and discharge sudden change state and/or the charge and discharge transition state in the preset algorithm library, it is only necessary to adjust the preset time period t1 to be located in the charge and discharge sudden change state (or the charge and discharge transition state), and details of the embodiment of the present application are not repeated.
Referring to fig. 3, in some embodiments, the target rotation speed includes a second target rotation speed, the preset algorithm includes a second algorithm, and the step S130 includes: and calculating according to a second algorithm to obtain a second target rotating speed.
The step of calculating the second target rotation speed according to the first algorithm includes, but is not limited to, substeps S310 to S330.
S310, acquiring an average temperature value of the battery module in n first sampling periods; n is a positive integer greater than or equal to 1, and n first sampling periods are in the same working state;
s320, calculating to obtain a duty ratio according to the average temperature value, the first preset adjusting factor and the preset reference temperature value;
and S330, obtaining a second target rotating speed according to the duty ratio.
Specifically, taking the battery module in the charge-discharge transition state as an example, the proportion is adjusted according to the change of the temperature along with the time. When the current working state of the battery module is determined to be a charge-discharge transition state through the voltage change rate of the battery module, acquiring average temperature values T1 of n first sampling periods according to recorded data, and calculating a duty ratio p according to the following formula (2) 1 And further according to the duty ratio p 1 And obtaining a second target rotating speed. It will be appreciated that the duty cycle p 1 The PWM control duty ratio of the heat dissipation device is in a linear relation with the rotating speed of the heat dissipation device.
p 1 K abs (T1-T0)
Where K is a proportional adjustment factor (i.e., a first preset adjustment factor) set according to an actual adjustment requirement, and T0 is a preset reference temperature value. It is understood that in the second algorithm, the n first sampling periods are all required to be in the charge-discharge transition state. When the second algorithm is mapped with the charge-discharge steady state and/or the charge-discharge drastic change state in the preset algorithm library, only n first sampling periods need to be adjusted to be located in the charge-discharge steady state (or the charge-discharge drastic change state), and details of the embodiment of the application are omitted.
Referring to fig. 4, in some embodiments, the target rotation speed includes a third target rotation speed, the preset algorithm includes a third algorithm, and the step S130 includes: and calculating according to a third algorithm to obtain a third target rotating speed.
The step "calculating the target rotation speed according to the first algorithm" includes, but is not limited to, substeps S410 to S430.
S410, acquiring a first temperature change value of the battery module in a preset first time period, and acquiring a second temperature change value of the battery module in a preset second time period; the first time interval and the second time interval are two adjacent time intervals;
s420, calculating according to the first temperature change value, the second temperature change value and the second sampling period to obtain a temperature change rate;
and S430, obtaining a third target rotating speed according to the temperature change rate and a second preset adjusting factor.
Specifically, taking the battery module in the charge-discharge drastic change state as an example, the third target rotation speed of the heat sink is determined according to the temperature change rate of the battery module according to the differential control. When the current working state of the battery module is determined to be a charging and discharging drastic change state through the voltage change rate of the battery module, a first temperature change value delta T1 of the battery module in the I sampling time period (namely, a first time period) is obtained, and a second temperature change value delta T2 of the battery module in the I +1 sampling time period (namely, a second time period) is obtained. Wherein both the I sample period and the I +1 sample period are located within the same second sample period t2. And calculating the temperature change rate D of the battery module in the second sampling period T2 according to the first temperature change value delta T1, the second temperature change value delta T2 and the following formula (3), so as to obtain a third target rotating speed according to the product of the temperature change rate D and a preset proportionality coefficient (namely, a second preset adjusting factor).
.
It can be understood that, when the third algorithm is mapped with the charge-discharge steady state and/or the charge-discharge transition state in the preset algorithm library, only the second sampling period t2 needs to be adjusted to be located in the charge-discharge steady state (or the charge-discharge transition state), and details of the embodiment of the present application are not repeated.
In a specific embodiment, the mapping relations in the preset algorithm library are set as a first algorithm and charge-discharge steady state mapping, a second algorithm and charge-discharge transition state mapping, and a third algorithm and charge-discharge drastic change state mapping, namely integral regulation is performed when the battery module is in the charge-discharge steady state, proportional regulation is performed when the battery module is in the charge-discharge transition state, and differential regulation is performed when the battery module is in the charge-discharge drastic change state, so that different speed regulation methods are used according to different working states of the battery module, and the speed regulation accuracy is improved. It can be understood that, according to the speed regulation requirement (including the requirements of cost, precision, complexity, calculation time and the like), the hybrid regulation of integral regulation, proportion regulation and differential regulation can be carried out when the battery module is in a charge-discharge stable state. Wherein the mixing adjustment comprises the mixing of any two adjusting methods or the mixing of three adjusting methods. Similarly, when the battery module is in the charge-discharge transition state and the charge-discharge drastic state, the above-mentioned hybrid regulation may also be performed, and the embodiment of the present application is not particularly limited.
It can be understood that, in some embodiments, the speed regulation method provided by the embodiment of the present application may be further linked with a container air conditioning system (HAVC) equipped with a battery module, so as to improve the temperature regulation efficiency of the battery module and enable the container air conditioning system to be in an optimal energy consumption and operation state.
Referring to fig. 5, an embodiment of the present application further provides a heat dissipation apparatus, including:
and the preset algorithm library 100 is used for storing a first algorithm, a second algorithm and a third algorithm.
The main control module 200 is configured to execute the speed regulation method described in any of the above embodiments.
It can be seen that the contents in the foregoing speed adjusting method embodiments are all applicable to the embodiments of the heat dissipation device, the functions specifically implemented by the embodiments of the heat dissipation device are the same as those in the foregoing speed adjusting method embodiments, and the beneficial effects achieved by the embodiments of the heat dissipation device are also the same as those achieved by the foregoing speed adjusting method embodiments.
In some embodiments, the learning module can be arranged in the heat sink separately or as an additional module of the main control module. The learning module is used for carrying out online learning and intelligent control on different use scenes and speed regulation requirements through a neural network, a genetic algorithm, a fuzzy algorithm and the like, so that the speed regulation of the heat dissipation device is more accurate, rapid and stable.
An embodiment of the present application further provides an electronic device, including: the system includes at least one processor, and a memory communicatively coupled to the at least one processor. The memory stores instructions, and the instructions are executed by the at least one processor, so that the at least one processor can implement the speed regulation method as described in any one of the above embodiments when executing the instructions.
An embodiment of the present application provides a computer-readable storage medium storing computer-executable instructions for: the speed regulation method described in any of the above embodiments is executed.
The above-described embodiments of the apparatus are merely illustrative, wherein the units illustrated as separate components may or may not be physically separate, i.e. may be located in one place, or may also be distributed over a plurality of network elements. Some or all of the modules may be selected according to actual needs to achieve the purpose of the solution of the present embodiment.
It will be understood by those of ordinary skill in the art that all or some of the steps, systems, and methods disclosed above may be implemented as software, firmware, hardware, or suitable combinations thereof. Some or all of the physical components may be implemented as software executed by a processor, such as a central processing unit, digital signal processor, or microprocessor, or as hardware, or as an integrated circuit, such as an application specific integrated circuit. Such software may be distributed on computer readable media, which may include computer storage media (or non-transitory media) and communication media (or transitory media). The term computer storage media includes volatile and nonvolatile, removable and non-removable media implemented in any method or technology for storage of information such as computer readable instructions, data structures, program modules or other data, as is well known to those of ordinary skill in the art. Computer storage media includes, but is not limited to, RAM, ROM, EEPROM, flash memory or other memory technology, CD-ROM, Digital Versatile Disks (DVD) or other optical disk storage, magnetic cassettes, magnetic tape, magnetic disk storage or other magnetic storage devices, or any other medium which can be used to store the desired information and which can accessed by a computer. In addition, communication media typically embodies computer readable instructions, data structures, program modules or other data in a modulated data signal such as a carrier wave or other transport mechanism and includes any information delivery media as known to those skilled in the art.
The embodiments of the present application have been described in detail with reference to the drawings, but the present application is not limited to the embodiments, and various changes can be made within the knowledge of those skilled in the art without departing from the spirit of the present application. Furthermore, the embodiments and features of the embodiments of the present application may be combined with each other without conflict.
Claims (8)
1. The speed regulation method is characterized by being applied to a heat dissipation device, wherein the heat dissipation device is used for carrying out heat dissipation operation on a battery module, and the speed regulation method comprises the following steps:
acquiring the voltage change rate of the battery module;
determining the working state of the battery module according to the voltage change rate; the working state comprises any one of a charge-discharge sudden change state, a charge-discharge transition state and a charge-discharge stable state;
obtaining at least one preset algorithm from a preset algorithm library according to the working state, and calculating according to the at least one preset algorithm to obtain a target rotating speed;
and adjusting the heat dissipation device according to the target rotating speed.
2. The method of regulating speed of claim 1, wherein the target speed comprises a first target speed and the predetermined algorithm comprises a first algorithm;
the calculating the target rotating speed according to at least one preset algorithm comprises the following steps: calculating to obtain the first target rotating speed according to the first algorithm;
the calculating the target rotating speed according to the first algorithm comprises:
acquiring a voltage value and a current value of the battery module within a preset time period;
obtaining heating power according to the voltage value and the current value, and obtaining the heat generation quantity of the battery module in the preset time period according to the heating power;
calculating the heat exchange quantity according to the heat production quantity;
and obtaining the first target rotating speed according to the heat exchange amount.
3. The method of regulating speed according to claim 2, wherein the target speed comprises a second target speed, and the preset algorithm further comprises a second algorithm;
the calculating according to at least one preset algorithm to obtain the target rotating speed further comprises: calculating to obtain the second target rotating speed according to the second algorithm;
the calculating the target rotating speed according to the second algorithm comprises the following steps:
acquiring an average temperature value of the battery module in n first sampling periods; wherein n is a positive integer greater than or equal to 1, and the n first sampling periods are located in the same working state;
calculating to obtain a duty ratio according to the average temperature value, a first preset adjusting factor and a preset reference temperature value;
and obtaining the second target rotating speed according to the duty ratio.
4. The method of regulating speed according to claim 3, wherein the target rotational speed comprises a third target rotational speed, and the preset algorithm further comprises a third algorithm;
the calculating according to at least one preset algorithm to obtain the target rotating speed further comprises: calculating to obtain the third target rotating speed according to the third algorithm;
the calculating the target rotating speed according to the third algorithm includes:
acquiring a first temperature change value of the battery module in a preset first time period, and acquiring a second temperature change value of the battery module in a preset second time period; wherein the first time interval and the second time interval are two adjacent time intervals;
calculating according to the first temperature change value, the second temperature change value and a second sampling period to obtain a temperature change rate;
and obtaining the third target rotating speed according to the temperature change rate and a second preset adjusting factor.
5. A speed regulating method according to any one of claims 1 to 4, wherein said determining the operating state of the battery module according to the voltage change rate comprises:
if the voltage change rate is smaller than a first preset threshold value, determining that the working state is the charging and discharging stable state;
if the voltage change rate is greater than the first preset threshold and less than a second preset threshold, determining that the working state is the charge-discharge transition state;
and if the voltage change rate is greater than the second preset threshold value, determining that the working state is the charging and discharging sudden change state.
6. A heat sink, comprising:
the method comprises the steps of presetting an algorithm library, wherein the preset algorithm library is used for storing a first algorithm, a second algorithm and a third algorithm;
a master control module for performing the speed governing method according to any one of claims 1 to 5.
7. An electronic device, comprising:
at least one processor;
at least one memory for storing at least one program;
when executed by the at least one processor, cause the at least one processor to implement the throttling method of any one of claims 1 to 5.
8. Computer readable storage medium having stored therein processor executable instructions, wherein the processor executable instructions, when executed by a processor, are for implementing a pacing method as claimed in any one of claims 1 to 5.
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