CN113972420B - Battery thermal management control method and system and storage medium - Google Patents

Battery thermal management control method and system and storage medium Download PDF

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Publication number
CN113972420B
CN113972420B CN202111197208.3A CN202111197208A CN113972420B CN 113972420 B CN113972420 B CN 113972420B CN 202111197208 A CN202111197208 A CN 202111197208A CN 113972420 B CN113972420 B CN 113972420B
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battery
temperature
battery modules
modules
module
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CN113972420A (en
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黄伟鹏
杨强
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Xiamen Hithium Energy Storage Technology Co Ltd
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Xiamen Hithium Energy Storage Technology Co Ltd
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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
    • H01M10/6568—Liquids characterised by flow circuits, e.g. loops, located externally to the cells or cell casings
    • 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
    • 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
    • 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
    • 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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  • 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 embodiment of the application discloses a battery thermal management control method, a battery thermal management control system and a storage medium, belongs to the technical field of battery thermal management, and can solve the problem that the battery temperature cannot be accurately controlled by the existing liquid cooling mode. The method comprises the following steps: determining at least two battery modules needing temperature adjustment according to the temperature of each battery module in the N battery pipelines; and determining the series connection mode of each battery pipeline corresponding to the at least two battery modules according to the temperature conditions of the at least two battery modules.

Description

Battery thermal management control method and system and storage medium
Technical Field
The present application relates to the field of battery thermal management technologies, and in particular, to a battery thermal management control method, system and storage medium.
Background
The existing liquid cooling mode pipeline connection mode is basically fixed, and in the use process of the battery module, temperature differences exist in different battery modules due to the difference of heat exchange boundaries. And the coolant temperature in the pipeline is difficult to carry out meticulous matching according to battery module's actual temperature, and after coolant liquid and battery module carried out heat exchange, some battery module high temperature appeared easily or the condition of crossing low excessively, and the temperature strikes the influence to electric core great, consequently can produce great influence to battery life after long-time the use.
Disclosure of Invention
The embodiment of the application provides a battery thermal management control method, a battery thermal management control system and a storage medium, and aims to solve the problem that the temperature of a battery cannot be accurately controlled in the existing liquid cooling mode.
In a first aspect of the embodiments of the present application, a battery thermal management control method is provided, where the method is applied to a battery thermal management system, the battery thermal management system is configured to manage N battery pipelines, each battery pipeline includes a battery module, N is an integer greater than 1, and the method includes: determining at least two battery modules needing temperature adjustment according to the temperature of each battery module in the N battery pipelines; and determining the series connection mode of each battery pipeline corresponding to the at least two battery modules according to the temperature conditions of the at least two battery modules.
In a second aspect of the embodiments of the present application, a battery thermal management control system is provided, where the battery thermal management control system is configured to manage N battery pipelines, each battery pipeline includes one battery module, and N is an integer greater than 1; the battery thermal management system includes: a determining module; the determining module is used for determining at least two battery modules which need to be subjected to temperature regulation according to the temperature of each battery module in the N battery pipelines; and determining the series connection mode of each battery pipeline corresponding to the at least two battery modules according to the temperature conditions of the at least two battery modules.
In a third aspect of the embodiments of the present application, a battery thermal management control is provided, where the battery thermal management control includes a processor, a memory, and a program or an instruction stored in the memory and executable on the processor, and when the program or the instruction is executed by the processor, the steps of the battery thermal management control method according to the first aspect are implemented.
In a fourth aspect of the embodiments of the present application, a readable storage medium is provided, where a program or instructions are stored, and the program or instructions, when executed by a processor, implement the steps of the battery thermal management control method according to the first aspect.
In the embodiment of the application, at least two battery modules needing temperature adjustment can be determined according to the temperature of each battery module in the N battery pipelines; and determining the series connection mode of each battery pipeline corresponding to the at least two battery modules according to the temperature conditions of the at least two battery modules. According to the scheme, the temperature conditions of at least two battery modules of which the temperatures can be adjusted as required are used, and the serial connection mode of each battery pipeline corresponding to the at least two battery modules is determined, so that compared with the prior art, the serial connection mode is increased, the pipeline connection mode is not fixed any more, the serial connection mode of the pipelines is increased, different battery modules can be sequentially cooled, the temperature of cooling liquid in the pipelines can be finely matched with the temperature of the battery modules, the condition that the temperature difference of each battery module is large (the temperature of the battery module is too high or too low) during heating or cooling is effectively avoided, the temperature equalization effect among the battery modules can be realized, and the service life of a battery can be well prolonged; and the serial connection mode can realize the reuse of the cooling liquid and reduce the power consumption.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings used in the description of the embodiments and the prior art will be briefly described below, and it is obvious that the drawings in the description below are only some embodiments of the present application, and other drawings can be obtained according to the drawings.
Fig. 1 is a schematic flow chart of a battery thermal management control method according to an embodiment of the present disclosure;
fig. 2 is a second flowchart of a battery thermal management control method according to an embodiment of the present disclosure;
fig. 3 is a third schematic flowchart of a battery thermal management control method according to an embodiment of the present application;
fig. 4 is a fourth schematic flowchart of a battery thermal management control method according to an embodiment of the present application;
fig. 5 is a fifth flowchart illustrating a battery thermal management control method according to an embodiment of the present application;
fig. 6 is a schematic structural diagram of a battery thermal management control loop according to an embodiment of the present disclosure;
FIG. 7A is a schematic diagram of a four-way valve according to an embodiment of the present disclosure;
FIG. 7B is a schematic diagram of a series connection of 3 lines defined by four-way valve 1 and four-way valve 2 according to an embodiment of the present disclosure;
FIG. 7C is a schematic diagram of a parallel connection of 3 lines defined by four-way valve 1 and four-way valve 2 according to an embodiment of the present disclosure;
FIG. 7D is a schematic diagram of the connection of 1 line defined by four-way valve 1 and four-way valve 2 according to an embodiment of the present disclosure;
fig. 8 is a block diagram of a battery thermal management control system according to an embodiment of the present disclosure;
fig. 9 is a schematic hardware structure diagram of a battery thermal management control system according to an embodiment of the present application.
Detailed Description
The technical solutions in the embodiments of the present application will be described clearly below with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are some, but not all, embodiments of the present application. All other embodiments, which can be derived from the embodiments in the present application by a person skilled in the art, are within the scope of protection of the present application.
The terms first, second and the like in the description and in the claims of the present application are used for distinguishing between similar elements and not necessarily for describing a particular sequential or chronological order. It will be appreciated that the data so used may be interchanged under appropriate circumstances such that embodiments of the application may be practiced in sequences other than those illustrated or described herein, and that the terms "first," "second," and the like are generally used herein in a generic sense and do not limit the number of terms, e.g., the first term can be one or more than one. In addition, "and/or" in the specification and claims means at least one of connected objects, a character "/", and generally means that the former and latter related objects are in an "or" relationship.
The difference in temperature of inlet outlet is great for current liquid cooling mode, and the tube coupling mode is fixed basically, and the temperature difference in the pipeline is difficult to carry out meticulous matching according to battery module's actual temperature, and it is poor to cause the radiating effect of battery, and the temperature difference is big, appears some battery temperature too high easily or the condition of crossing excessively, and the temperature strikes the influence to electric core great, consequently all can produce great influence to the performance and the life-span of battery after using for a long time.
Moreover, the existing liquid cooling mode is relatively extensive in control mode, the energy consumption is too high due to frequent cooling of the cooling liquid by a water cooling unit, and a liquid cooling system is lack of temperature equalization and heat dissipation matching of the battery by means of water temperature difference in a pipeline; the temperature change rate of different batteries of current liquid cooling mode is different, and the temperature impact is great to the influence of electricity core, lacks the control to each battery temperature change rate.
In order to solve the above problem, an embodiment of the present application provides a battery thermal management control method, which may determine at least two battery modules that need to be temperature-regulated according to the temperature of each battery module in N battery pipelines; and determining the series connection mode of each battery pipeline corresponding to the at least two battery modules according to the temperature conditions of the at least two battery modules. In the scheme, the temperature conditions of at least two battery modules which can be subjected to temperature regulation as required are used for determining the series connection mode of each battery pipeline corresponding to the at least two battery modules, so that compared with the prior art, the series connection mode is increased, the pipeline connection mode is not fixed any more, the series connection mode of the pipelines is increased, different battery modules can be sequentially cooled, the temperature of cooling liquid in the pipelines can be finely matched with the temperature of the battery modules, the condition that the temperature difference of each battery module is large (the temperature of the battery module is too high or too low) during heating or cooling is effectively avoided, the temperature equalization effect among the battery modules can be realized, and the service life of a battery can be well prolonged; and the serial connection mode can realize the reuse of the cooling liquid and reduce the power consumption.
The battery thermal management control system in the embodiment of the application can be applied to battery management control systems such as power batteries and energy storage batteries, and can also be applied to other battery management control systems, and the embodiment of the application is not limited. Among them, power batteries are generally used in vehicles, and energy storage batteries are generally used in energy storage containers.
An execution main body of the battery thermal management control method provided in the embodiment of the present application may be the battery thermal management control system, or may also be a functional module and/or a functional entity capable of implementing the battery thermal management control method in the battery thermal management control system, which may be specifically determined according to actual use requirements, and the embodiment of the present application is not limited.
The battery thermal management control method provided in the embodiment of the present application is described in detail below with reference to the accompanying drawings through specific embodiments and application scenarios thereof.
As shown in fig. 1, an embodiment of the present application provides a battery thermal management control method, and an implementation subject is taken as a battery thermal management control system as an example to exemplarily describe the battery thermal management control method provided in the embodiment of the present application. The battery thermal management system is used for managing N battery pipelines, each battery pipeline comprises a battery module, N is an integer larger than 1, and the method can comprise the following steps 101 to 102.
101. The battery thermal management control system determines at least two battery modules which need to be subjected to temperature regulation according to the temperature of each battery module in the N battery pipelines.
It can be understood that the following operations are executed for the battery modules in each pipeline, the temperature of each battery module is within a preset temperature range, the battery modules do not need to be subjected to temperature adjustment, if the temperature of each battery module is smaller than the minimum value of the preset temperature range, the temperature of each battery module needs to be raised, and if the temperature of each battery module is larger than the maximum value of the preset temperature range, the temperature of each battery module needs to be lowered.
It should be noted that, for different battery modules, the preset temperature ranges may be the same or different, and the embodiment of the present application is not limited. The preset temperature range can be determined according to actual use requirements, and the embodiment of the application is not limited.
For example, assuming that the preset temperature range is [ T1, T2], if the temperature of one battery module is greater than or equal to T1 and less than or equal to T2, the battery module does not need to be temperature-regulated; if the temperature of one battery module is less than T1, the battery module needs to be subjected to temperature rise treatment; if the temperature of one battery module is greater than T2, the temperature of the battery module needs to be reduced.
Optionally, in the at least two battery modules (which may be two battery modules or more battery modules), all the battery modules may need to be subjected to temperature reduction, all the battery modules may also need to be subjected to temperature increase, and part of the battery modules may also need to be subjected to temperature reduction and part of the battery modules may need to be subjected to temperature increase, which may specifically be determined according to actual use conditions, and the embodiment of the present application is not limited.
102. And the battery thermal management control system determines the series connection mode of each battery pipeline corresponding to the at least two battery modules according to the temperature conditions of the at least two battery modules.
Each battery module of the at least two battery modules corresponds to one battery pipeline, the at least two battery modules correspond to the at least two battery pipelines, and the battery thermal management control system determines the series connection mode of the at least two battery pipelines according to the temperature conditions of the at least two battery modules.
The cooling liquid is usually 50% of ethylene glycol and 50% of water, and the cooling liquid may be other cooling liquids, which is not limited in the embodiments of the present application.
Optionally, in this embodiment of the application, the serial connection mode of each battery pipeline corresponding to at least two battery modules is determined according to the temperature conditions of at least two battery modules, and may be the serial connection mode of each battery pipeline corresponding to at least two battery modules determined according to the temperature values of each battery module of at least two battery modules; or determining the series connection mode of each battery pipeline corresponding to at least two battery modules according to the temperature value and the temperature conversion rate of each battery module in the at least two battery modules and the temperature conditions of the at least two battery modules; the serial connection mode of each battery pipeline corresponding to the at least two battery modules can be determined according to the temperature condition of the at least two battery modules and the temperature conversion rate of each battery module in the at least two battery modules; the method can be determined according to actual use requirements, and the embodiment of the application is not limited.
Illustratively, the above step 102 may be implemented by the following step 102 a.
102a, the battery thermal management control system determines a series connection sequence of each battery pipeline corresponding to at least two battery modules according to the temperature value of each battery module of the at least two battery modules.
Alternatively, if all of the at least two battery modules require the temperature reduction process, the series order may be: the at least two battery pipelines are sequentially connected in series from high to low according to the temperature values of the at least two battery modules, so that in the cooling treatment process, the cooling liquid firstly passes through the battery modules with higher temperature and then passes through the battery modules with lower temperature (or the at least two battery pipelines are sequentially connected in series from low to high according to the temperature values of the at least two battery modules, so that in the cooling treatment process, the cooling liquid firstly passes through the battery modules with lower temperature and then passes through the battery modules with higher temperature, other connection modes can be provided, and the embodiment of the application is not limited), so that the cooling treatment is sequentially carried out on each battery module, the temperature equalization effect of each battery module is achieved, the cooling liquid can be recycled, and the energy consumption is reduced.
Alternatively, if all of the at least two battery modules require temperature-raising treatment, the series order may be: the at least two battery pipelines are sequentially connected in series according to the sequence that the temperature values of the at least two battery modules are connected from low to high, so that in the temperature rising process, the cooling liquid firstly passes through the battery modules with lower temperature and then passes through the battery modules with higher temperature (or the at least two battery pipelines are sequentially connected in series according to the sequence that the temperature values of the at least two battery modules are connected from high to low), then in the temperature rising process, the cooling liquid firstly passes through the battery modules with higher temperature and then passes through the battery modules with lower temperature, other connection modes can be provided, and no limitation is provided in the embodiment of the application), so that the temperature rising process is sequentially carried out on each battery module, the temperature equalizing effect of each battery module is achieved, and the cooling liquid can be recycled, so that the energy consumption is reduced.
Alternatively, if the at least two battery module portions require temperature raising processing and the portions require temperature lowering processing, the series connection order may be: the battery modules needing temperature rise in the at least two battery pipelines are sequentially connected in series from low to high (or from high to low) according to the temperature, the battery modules needing temperature rise in the at least two battery pipelines are sequentially connected in series from high to low (or from low to high) according to the temperature, if the temperature of the cooling liquid is lower, the battery modules needing temperature rise are firstly cooled, then the battery modules needing temperature rise are heated, if the temperature of the cooling liquid is higher, the battery modules needing temperature rise are firstly heated, and then the battery modules needing temperature rise are cooled, so that the temperature equalizing effect of each battery module is achieved, the cooling liquid can be recycled, and the energy consumption is reduced.
Illustratively, in conjunction with fig. 1, as shown in fig. 2, the above step 102 may be implemented by the following step 102 b.
102b, the battery thermal management control system determines the series connection sequence of each battery pipeline corresponding to at least two battery modules according to the temperature value and the temperature change rate of each battery module in the at least two battery modules.
It can be understood that, for different battery modules, the temperature change rates may be different, and if the temperature change rate of each of the at least two battery modules is the same, the series connection sequence of the corresponding battery pipelines may be determined only according to the temperature values of the at least two battery modules; and if the temperature change rates of the at least two battery modules are different, determining the series connection sequence of the corresponding battery pipelines by combining the temperature values of the at least two battery modules and the temperature change rate of each battery module. For example, the battery pipelines may be sorted according to the temperature value of each battery module, and then the sorting of the battery pipelines may be adjusted according to the temperature change rate of each battery module, specifically, the sorting may be determined according to the actual use condition, which is not limited in the embodiment of the present application.
In the embodiment of the application, the series connection sequence of the battery pipelines corresponding to the at least two battery modules is determined by combining the temperature value and the temperature change rate of each battery module, so that the temperature of the battery modules can be better adjusted, and the temperature equalization effect of each battery module is achieved.
Illustratively, the step 102b may be implemented by the following steps 102b1 to 102b 2.
102b1, the battery thermal management control system sorts according to the temperature value of each battery module in the at least two battery modules, and determines the arrangement sequence of the at least two battery modules.
102b2, the battery thermal management control system adjusts the arrangement sequence according to the temperature change rate of each of the at least two battery modules to determine the series connection sequence.
In the embodiment of the application, the battery thermal management control system firstly performs preliminary sequencing on the battery pipelines corresponding to the at least two battery modules according to the temperature value of each battery module to obtain the arrangement sequence corresponding to the series connection mode, and then adjusts the arrangement sequence by combining the temperature change rate of each battery module to determine the final series connection sequence corresponding to the series connection mode. Therefore, a more appropriate series connection sequence of the battery pipelines corresponding to the at least two battery modules can be obtained, and the temperature equalization effect of each battery module can be better realized.
Alternatively, the step 102b2 may be implemented by the step 102b3 described below.
102b3, the battery thermal management control system adjusts the sequence of two battery modules meeting the preset condition in the arrangement sequence, and determines the series connection sequence.
Wherein the predetermined conditions include: in the two battery modules, the difference value between the temperature value of the first battery module and the temperature value of the second battery module is greater than or equal to a first difference threshold value, and the difference value between the temperature change rate of the second battery module and the temperature change rate of the second battery module is greater than or equal to a second difference threshold value.
The first difference threshold may be determined according to actual use requirements, and the embodiment of the present application is not limited. The second difference threshold may be determined according to actual usage requirements, and the embodiment of the present application is not limited.
It is to be understood that, in the arrangement order, if any two battery modules satisfy a predetermined condition, the arrangement order of the two battery modules is adjusted until the series order is determined in a case where there is no battery module satisfying the predetermined condition among the at least two battery modules.
Alternatively, in the above step 102b3, only the order of two adjacent battery modules satisfying the predetermined condition in the arrangement order may be adjusted, and the series order may be determined, that is, the order of two non-adjacent battery modules satisfying the predetermined condition in the arrangement order is not adjusted.
The battery pipelines with high temperature change rate can be arranged behind the battery module (namely, the cooling liquid can firstly pass through the battery pipelines corresponding to the battery modules with low temperature change rate and then pass through the battery pipelines corresponding to the battery modules with high temperature change rate); the battery pipelines with large temperature change rate can be arranged in front (namely, the cooling liquid can firstly pass through the battery pipelines corresponding to the battery modules with large temperature change rate and then pass through the battery pipelines corresponding to the battery modules with small temperature change rate); the embodiments of the present application are not limited.
For example, taking the at least two battery modules as an example, if the two battery modules need to be cooled, the temperature values of the two battery modules are different, and the temperature change rates of the two battery modules are also different, when the difference between the temperature values of the two battery modules is large, the battery module with a higher temperature value is arranged in front, that is, the cooling liquid firstly passes through the battery pipeline corresponding to the battery module with a higher temperature value, and then passes through the battery pipeline corresponding to the battery module with a lower temperature value; also can be when the temperature value difference of two battery module is less, the coolant liquid passes through the battery pipeline that battery module that the rate of temperature change is big corresponds earlier, passes through the battery pipeline that battery module that the rate of temperature change is little corresponds again, specifically can confirm according to the in-service use demand, and this application embodiment does not do the restriction.
In the embodiment of the application, the temperature value and the temperature change rate of each battery module in the at least two battery modules are integrated, the series connection sequence of the corresponding battery pipelines is determined, the temperature equalization effect of each battery module can be better realized, the utilization rate of cooling liquid can be improved, and the power consumption is better reduced.
Optionally, the battery thermal management control system controls the at least two battery pipelines to be connected in series by controlling the multifunctional control valve according to a series connection mode of each battery pipeline corresponding to the at least two battery modules, and then controls the cooling liquid to sequentially flow through the at least two battery pipelines, so that the cooling liquid exchanges heat with the battery module corresponding to each pipeline, and further the battery module corresponding to each pipeline is cooled or heated.
The multifunctional control valve may include at least one of a multi-way valve, a reversing valve, and the like, and the embodiment of the present application is not limited.
The multi-way valve is a handle rotary valve for connecting and controlling a multi-way pipeline, a valve cover is arranged at the upper end of a valve body, and a valve core connected with a handle is arranged in the valve body. In the embodiment of the present application, it is not limited whether the multi-way valve is a two-way valve, a three-way valve, a four-way valve, a five-way valve, or another multi-way valve.
The number and the style of the multi-way valves can be set according to actual use requirements, and the embodiment of the application is not limited. In the embodiment of the application, the multi-way valve can realize the function of controlling the through-flow or the cut-off of a certain battery pipeline.
The reversing valve is a directional control valve with more than two flow forms and more than two oil ports. The valve realizes the communication, cut-off and reversal of hydraulic oil flow, pressure unloading and sequential action control. The valve is controlled by the relative movement direction of the valve core and the valve body. There are two types, a rotary valve type and a slide valve type. The valve core is divided into two positions, three positions and the like according to the number of the working positions of the valve core staying in the valve body; the oil way connected with the valve body is divided into two-way, three-way, four-way, six-way and the like; the movement modes of the operation valve core are manual, motor, electric, hydraulic, electrohydraulic and the like.
The number and the style of the switching valves can be set according to actual use requirements, and the embodiment of the application is not limited.
Alternatively, in conjunction with fig. 1, as shown in fig. 3, the step 102 can be implemented by the following step 102 c.
102c, under the condition that the at least two battery modules meet the target conditions, the battery thermal management control system determines the series connection mode of each battery pipeline corresponding to the at least two battery modules according to the temperature conditions of the at least two battery modules.
Wherein the target conditions include: and the absolute value of the temperature difference value of any two adjacent battery modules in the sequence formed by sorting at least two battery modules according to the temperature values is greater than or equal to the temperature threshold value.
The temperature threshold may be determined according to an actual use condition, and the embodiment of the present application is not limited.
In the embodiment of the application, under the condition that the at least two battery modules meet the target condition, the battery thermal management control system determines the series connection mode of the at least two battery pipelines corresponding to the at least two battery modules, so that the temperature of the cooling liquid in the pipelines can be better matched with the temperature of the battery modules, and the condition that the temperature difference of each battery module is large (the temperature value of the battery module is too high or too low) during heating or cooling is effectively avoided, so that the temperature equalization effect among the battery modules can be better realized, and the service life of a battery can be better prolonged; and the serial connection mode can realize the reuse of the cooling liquid and reduce the power consumption.
Optionally, with reference to fig. 3, as shown in fig. 4, after the step 101, the battery thermal management control method provided in the embodiment of the present application may further include a step 103 described below.
103. And under the condition that the at least two battery modules do not meet the target condition, the battery thermal management control system determines the parallel connection mode of the battery pipelines corresponding to the at least two battery modules.
It can be understood that, in combination with the step 102c, after the at least two battery modules needing temperature adjustment are determined in the step 101, if the at least two battery modules meet the target condition, the serial connection mode of the battery pipelines corresponding to the at least two battery modules is determined according to the temperature conditions of the at least two battery modules; and if the at least two battery modules do not meet the target condition, the battery thermal management control system determines the parallel connection mode of the battery pipelines corresponding to the at least two battery modules. Therefore, in the embodiment of the present application, the connection mode of the at least two battery pipelines is determined according to whether the at least two battery modules meet the target condition, so that the connection mode of the at least two battery pipelines can be better determined according to the temperature conditions of the at least two battery modules, the temperature of the cooling liquid in the pipelines can be better matched with the temperature of the battery modules, the condition that the temperature difference of each battery module is large (the temperature of the battery module is too high or too low) during heating or cooling is effectively avoided, the temperature equalization effect between the battery modules can be better realized, and the service life of the battery can be well prolonged.
Optionally, each battery line further comprises a flow controller in series with the corresponding battery module; referring to fig. 4, as shown in fig. 5, after step 103, the battery thermal management control method provided in the embodiment of the present application may further include step 104.
104. And the battery thermal management control system adjusts the opening degree of the flow controller corresponding to each battery pipeline according to the temperature value of each battery module in the at least two battery modules.
The flow controller, which can also be called as a flow regulating valve, is a visual and simple flow regulating and controlling device, can set the flow (of cooling liquid) according to the design or actual requirements, can automatically eliminate the pressure difference fluctuation of the system, and keeps the flow unchanged.
It can be understood that, in the embodiment of the present application, the flow rate flowing through the corresponding battery pipeline is controlled by adjusting the opening degree of the corresponding flow rate controller.
In the embodiment of the application, the opening degree of the corresponding flow controller is adjusted according to the temperature value of the battery module, so that the circulation volume of the cooling liquid corresponding to the battery pipeline can be reduced, the temperature change of the battery module in the corresponding battery pipeline is avoided being overlarge, and the temperature equalization effect of each battery module can be realized.
Alternatively, the step 104 may be specifically realized by the following step 104 a.
104a, the battery thermal management control system adjusts the opening degree of the flow controller corresponding to each battery pipeline according to the temperature value and the temperature change rate of each battery module in the at least two battery modules.
In the embodiment of the application, combine battery module's temperature value and temperature change rate, adjust the aperture of the flow controller that corresponds, reduce the circulation water yield that corresponds the battery pipeline to battery module temperature variation is too big in avoiding corresponding the battery pipeline, can realize the matching heat transfer to battery module better, and then realizes the effect of each battery module samming better.
Optionally, before the step 102, the battery thermal management control method provided in the embodiment of the present application may further include a step 105 described below.
105. The battery thermal management control system determines a temperature regulation mode according to the relationship between the temperature value of each battery module in the at least two battery modules and the temperature value of the cooling liquid.
Wherein the temperature regulation mode is any one of: cooling mode, self-circulation mode, heating mode.
The cooling mode can realize the cooling of the cooling liquid through an external refrigerant by a compressor, a condenser, a fan and the like; the self-circulation mode can realize heat exchange between the cooling liquid and the external environment through a fan and the like; the heating mode may be heating the coolant by a heater. The specific description of the cooling mode, the self-circulation mode and the heating mode can refer to the prior art, and the embodiments of the present application are not limited.
Optionally, the battery thermal management control system may determine the temperature adjustment mode according to a relationship between a temperature value of each of the at least two battery modules and a temperature value of the coolant, and may also determine the temperature adjustment mode according to an ambient temperature, a coolant temperature (a coolant temperature at an inlet of a battery duct or a coolant temperature after heat exchange with an external environment, and the like), which may specifically be determined according to an actual use requirement, and the embodiment of the present application is not limited.
In the embodiment of the application, the temperature regulation mode is determined according to the relationship between the temperature value of each battery module in the at least two battery modules and the temperature value of the cooling liquid, so that the temperature of the battery modules can be better regulated.
Illustratively, as shown in fig. 6, a schematic diagram of a battery thermal management control loop (in the figure, a solid line represents a pipeline line, and a dashed line represents a signal transmission line), the battery thermal management control loop may include N battery pipelines, a multifunctional control valve 1, a multifunctional control valve 2, an overall controller (i.e., a battery thermal management control system), a liquid storage tank, a pump, a water chiller, and a heater. Each battery pipeline comprises a battery module and a flow controller, and each battery module comprises a temperature sensor for detecting the temperature of the battery module; the multifunctional control valve can comprise at least one of a multi-way valve and a reversing valve, the multifunctional control valve 2 can also comprise at least one of a multi-way valve and a reversing valve, and is used for controlling the multifunctional control valve 1 and the multifunctional control valve 2 according to the temperature condition of each battery module, further realizing the connection mode (series connection or parallel connection) of at least two battery pipelines in N battery pipelines, the master controller can also be used for determining the temperature regulation mode according to the temperature condition of each battery module, the temperature value of cooling liquid and the like, then realizing the circulation of the cooling liquid by controlling the pump, and realizing the cooling mode by controlling a water cooling unit or realizing the heating mode by controlling a heater.
Example 1, the multi-function control valve is a four-way valve and N is 3. As shown in fig. 7A, the four-way valve is composed of a main body and a rotating disk, taking the four-way valve 1 as an example, the main body is respectively communicated with a main intake (a cooling liquid inlet) and 3 battery pipeline inlets (namely, a pipeline 1 inlet, a pipeline 2 inlet and a pipeline 3 inlet), and when the main body is used alone, the 3 battery pipeline inlets are communicated in pairs; when the main body and the rotating disc are matched for use, the rotating controller rotates to enable the 3 battery pipeline inlets of the main body to fall into the battery pipeline inlets in the hollow area of the rotating disc and be disconnected with the other two battery pipeline inlets; taking the four-way valve 2 as an example, the main body part is respectively communicated with a main outlet (a cooling liquid outlet) and 3 battery pipeline outlets (namely, the outlet of the pipeline 1, the outlet of the pipeline 2 and the outlet of the pipeline 3), and when the main body is used independently, the 3 battery pipeline outlets are communicated in pairs; when the main body and the rotary disk are matched for use, the rotary controller rotates to enable the 3 battery pipeline inlets of the main body to fall into the battery pipeline outlets in the hollow area of the rotary disk, and the battery pipeline outlets are disconnected with the other two battery pipeline outlets.
When the above example 1 is received, the temperature value of the battery module in the battery pipeline 1, the temperature value of the battery module in the battery pipeline 2, and the temperature value of the battery module in the battery pipeline 3 are not within the preset temperature range, and therefore, temperature adjustment is required. The temperature value of the battery modules in the battery pipeline 1 is greater than that of the battery modules in the battery pipeline 3, and the temperature value of the battery modules in the battery pipeline 3 is greater than that of the battery modules in the battery pipeline 2, so that the battery modules can be connected in series. As shown in fig. 7B, the rotary controller of the four-way valve 1 rotates to make the inlet of the pipeline 1 fall into the hollow area of the rotary disk, so that the inlet of the pipeline 1 is disconnected from the inlet of the pipeline 2 and the inlet of the pipeline 3, respectively, the inlet of the pipeline 2 and the inlet of the pipeline 3 are kept connected, the rotary controller of the four-way valve 2 rotates to make the outlet of the pipeline 2 fall into the hollow area of the rotary disk, so that the outlet of the pipeline 2 is disconnected from the outlet of the pipeline 1 and the outlet of the pipeline 3, respectively, and the outlet of the pipeline 1 and the outlet of the pipeline 3 are kept connected, at this time, as shown by arrows in fig. 7B, the battery pipeline 1, the battery pipeline 3 and the battery pipeline 2 are connected in series in sequence, and the cooling liquid flows in from the inlet of the pipeline 1 of the four-way valve 1, sequentially flows through the battery pipeline 1, the battery pipeline 3 and the battery pipeline 2, and flows out from the outlet of the pipeline 2.
When the above example 1 is received, the temperature value of the battery module in the battery pipeline 1, the temperature value of the battery module in the battery pipeline 2, and the temperature value of the battery module in the battery pipeline 3 are not within the preset temperature range, and therefore, temperature adjustment is required. The temperature values of the battery modules in the battery pipeline 1, the battery modules in the battery pipeline 2 and the battery modules in the battery pipeline 3 are all very similar, so that the battery modules can be connected in parallel. As shown in fig. 7C, both the four-way valve 1 and the four-way valve 2 use only the four-way valve body, as shown by arrows in fig. 7C, the battery line 1, the battery line 2, and the battery line 3 are connected in parallel, and the cooling liquid flows in from the main inlet and then flows out from the main outlet, while being divided and simultaneously flows through the battery line 1, the battery line 2, and the battery line 3.
Accepting above-mentioned example 2, the battery module temperature value in the battery pipeline 1 is not in presetting the temperature range, need carry out temperature regulation, and the battery module temperature value in the battery pipeline 2 and the battery module temperature value in the battery pipeline 3 all are in presetting the temperature range, need not to carry out temperature regulation, consequently can only need carry out temperature regulation to battery pipeline 1. As shown in fig. 7D, the rotation controller of the four-way valve 1 rotates to make the inlet of the pipeline 1 fall into the hollow-out area of the rotating disk, so that the inlet of the pipeline 1 is disconnected from the inlet of the pipeline 2 and the inlet of the pipeline 3, respectively, the inlet of the pipeline 2 and the inlet of the pipeline 3 are kept connected, the rotation controller of the four-way valve 2 rotates to make the outlet of the pipeline 1 fall into the hollow-out area of the rotating disk, so that the outlet of the pipeline 1 is disconnected from the outlet of the pipeline 2 and the outlet of the pipeline 3, respectively, the outlet of the pipeline 2 and the outlet of the pipeline 3 are kept connected, at this time, as shown by an arrow in fig. 7D, the battery pipeline 1 is connected, the battery pipeline 2 and the battery pipeline 3 are disconnected, and the cooling liquid flows into the battery pipeline 1 from the inlet of the pipeline 1 of the four-way valve 1, flows out from the outlet of the pipeline 1.
In connection with the above example, the parallel connection of the two pipelines or the series connection of the two pipelines can be realized by combining with other multifunctional control valves, which can be designed according to actual use conditions and is not described herein.
Fig. 8 is a block diagram of a battery thermal management control system according to an embodiment of the present disclosure, where as shown in fig. 8, the battery thermal management system is configured to manage N battery pipelines, each battery pipeline includes a battery module, and N is an integer greater than 1; the battery thermal management system comprises: a determination module 801; the determining module 801 is configured to determine at least two battery modules that need to be temperature-adjusted according to the temperature of each battery module in the N battery pipelines; and determining the series connection mode of each battery pipeline corresponding to the at least two battery modules according to the temperature conditions of the at least two battery modules.
Optionally, the determining module 801 is specifically configured to determine a series connection sequence of each battery pipeline corresponding to at least two battery modules according to a temperature value of each battery module of the at least two battery modules.
Optionally, the determining module 801 is specifically configured to determine a series connection sequence of each battery pipeline corresponding to at least two battery modules according to a temperature value and a temperature change rate of each battery module of the at least two battery modules.
Optionally, the determining module 801 is specifically configured to perform sorting according to the temperature value of each of the at least two battery modules, and determine an arrangement order of the at least two battery modules; the arrangement order is adjusted according to a temperature change rate of each of the at least two battery modules to determine a series order.
Optionally, the determining module 801 is specifically configured to adjust an order of two battery modules satisfying a predetermined condition in the arrangement order, and determine a series order; wherein the predetermined conditions include: in the two battery modules, the difference value between the temperature value of the first battery module and the temperature value of the second battery module is greater than or equal to a first difference threshold value, and the difference value between the temperature change rate of the second battery module and the temperature change rate of the second battery module is greater than or equal to a second difference threshold value.
Optionally, the determining module 801 is specifically configured to determine, when at least two battery modules meet the target condition, a series connection manner of battery pipelines corresponding to the at least two battery modules according to temperature conditions of the at least two battery modules; wherein the target conditions include: and the absolute value of the temperature difference value of any two adjacent battery modules in the sequence formed by sorting at least two battery modules according to the temperature values is greater than or equal to the temperature threshold value.
Optionally, the determining module 801 is further configured to, after determining at least two battery modules that need to be temperature-regulated according to the temperature of each battery module in the N battery pipelines, determine a parallel connection manner of the battery pipelines corresponding to the at least two battery modules when the at least two battery modules do not meet a target condition.
Optionally, each battery line further comprises a flow controller in series with the corresponding battery module; the battery thermal management control system further comprises: an adjustment module; the adjusting module is configured to, when at least two battery modules do not meet a target condition, determine a parallel connection manner of each battery pipeline corresponding to the at least two battery modules by the determining module 801, and adjust an opening degree of a flow controller corresponding to each battery pipeline according to a temperature value of each battery module of the at least two battery modules.
Optionally, the adjusting module is specifically configured to adjust an opening degree of the flow controller corresponding to each battery pipeline according to a temperature value and a temperature change rate of each battery module of the at least two battery modules.
Optionally, the determining module 801 is further configured to determine a temperature adjustment mode according to a relationship between a temperature value of each of the at least two battery modules and a temperature value of the cooling liquid before determining a series connection manner of the battery pipelines corresponding to the at least two battery modules according to temperature conditions of the at least two battery modules; wherein the temperature regulation mode is any one of the following: cooling mode, self-circulation mode, heating mode.
In this embodiment of the application, each module may implement the battery thermal management control method provided in the foregoing method embodiment, and may achieve the same technical effect, and for avoiding repetition, details are not described here again.
Fig. 9 is a schematic diagram of a hardware structure of a battery thermal management control system for implementing various embodiments of the present application, and as shown in fig. 9, the battery thermal management control system includes, but is not limited to: processor 901, memory 902, sensor 903, and power supply 904. Those skilled in the art will appreciate, however, that the battery thermal management control system configuration shown in fig. 9 does not constitute a limitation of the battery thermal management control system, and may include more or fewer components than shown, or some components in combination, or a different arrangement of components.
The processor 901 (corresponding to the overall controller in fig. 6) is a control center of the battery thermal management control system, connects various parts of the entire battery thermal management control system by using various interfaces and lines, and executes various functions and processes data of the battery thermal management control system by running or executing software programs and/or modules stored in the memory 902 and calling data stored in the memory 902, thereby performing overall monitoring on the battery thermal management control system. Alternatively, processor 901 may include one or more processing units; preferably, the processor 901 may integrate an application processor, which mainly handles operating systems, user interfaces, application programs, etc., and a modem processor, which mainly handles wireless communications. It will be appreciated that the modem processor described above may not be integrated into the processor 901.
The memory 902 may be used to store software programs and modules, and the processor 901 may execute various functional applications and data processing of the battery thermal management control system by executing the software programs and modules stored in the memory 902. The memory 902 may mainly include a program storage area and a data storage area, wherein the program storage area may store an operating system, an application program required for at least one function, and the like; the storage data area may store data created according to use of the battery thermal management control system, and the like. Further, the memory 902 may include high speed random access memory, and may also include non-volatile memory, such as at least one magnetic disk storage device, flash memory device, or other volatile solid state storage device.
The battery thermal management control system may also include at least one sensor 903, such as a temperature sensor, an infrared sensor, and other sensors. Specifically, the temperature sensor may be used to detect the temperature of the battery module.
The battery thermal management control system further includes a power supply 904 for supplying power to each component, and preferably, the power supply may be logically connected to the processor 901 through a power management system, so as to implement functions of managing charging, discharging, and power consumption through the power management system. Although not shown, the battery thermal management control system may further include a communication module and the like, which are not described in detail herein.
In an embodiment of the application, a battery thermal management control system comprises a sample conveying track, wherein the sample conveying track comprises a detection module and a steering module.
The battery thermal management system is used for managing N battery pipelines, each battery pipeline comprises a battery module, N is an integer greater than 1, and the processor 901 is used for determining at least two battery modules needing temperature adjustment according to the temperature of each battery module in the N battery pipelines; and determining the series connection mode of each battery pipeline corresponding to the at least two battery modules according to the temperature conditions of the at least two battery modules.
Optionally, the processor 901 is specifically configured to determine a series connection sequence of each battery pipeline corresponding to at least two battery modules according to a temperature value of each battery module of the at least two battery modules.
Optionally, the processor 901 is specifically configured to determine a series sequence of battery pipelines corresponding to at least two battery modules according to a temperature value and a temperature change rate of each of the at least two battery modules.
Optionally, the processor 901 is specifically configured to perform sorting according to a temperature value of each battery module of the at least two battery modules, and determine an arrangement order of the at least two battery modules; the arrangement order is adjusted according to a temperature change rate of each of the at least two battery modules to determine a series order.
Optionally, the processor 901 is specifically configured to adjust an order of two battery modules meeting a predetermined condition in the arrangement order, and determine a series order; wherein the predetermined conditions include: in the two battery modules, the difference value between the temperature value of the first battery module and the temperature value of the second battery module is greater than or equal to a first difference threshold value, and the difference value between the temperature change rate of the second battery module and the temperature change rate of the second battery module is greater than or equal to a second difference threshold value.
Optionally, the processor 901 is specifically configured to, when the at least two battery modules meet the target condition, determine a series connection manner of battery pipelines corresponding to the at least two battery modules according to temperature conditions of the at least two battery modules; wherein the target conditions include: and the absolute value of the temperature difference value of any two adjacent battery modules in the sequence formed by sorting at least two battery modules according to the temperature values is greater than or equal to the temperature threshold value.
Optionally, the processor 901 is further configured to, after determining at least two battery modules that need to be temperature-adjusted according to the temperature of each battery module in the N battery pipelines, determine a parallel connection manner of each battery pipeline corresponding to the at least two battery modules when the at least two battery modules do not meet the target condition.
Optionally, each battery line further comprises a flow controller in series with the corresponding battery module; the processor 901 is further configured to, after determining a parallel connection manner of each battery pipeline corresponding to at least two battery modules under the condition that the at least two battery modules do not meet the target condition, adjust an opening degree of a flow controller corresponding to each battery pipeline according to a temperature value of each battery module of the at least two battery modules.
Optionally, the processor 901 is specifically configured to adjust an opening degree of the flow controller corresponding to each battery pipeline according to a temperature value and a temperature change rate of each battery module in the at least two battery modules.
Optionally, the processor 901 is further configured to determine a temperature adjustment mode according to a relationship between a temperature value of each of the at least two battery modules and a temperature value of the cooling liquid before determining a series connection manner of each battery pipeline corresponding to the at least two battery modules according to temperature conditions of the at least two battery modules; wherein the temperature regulation mode is any one of: cooling mode, self-circulation mode, heating mode.
The beneficial effects of the various implementation manners in this embodiment may specifically refer to the beneficial effects of the corresponding implementation manners in the foregoing battery thermal management control method embodiment, and in order to avoid repetition, details are not described here again.
The embodiment of the present application further provides a battery thermal management control system, where the battery thermal management control system may include: the processor, the memory, and the program or the instruction stored in the memory and capable of being executed on the processor, where the program or the instruction, when executed by the processor, may implement each process of the battery thermal management control method provided in the foregoing method embodiments, and may achieve the same technical effect, and in order to avoid repetition, details are not repeated here.
Embodiments of the present application provide a readable storage medium, where a program or an instruction is stored on the readable storage medium, and when the program or the instruction is executed by a processor, the program or the instruction implements each process of the battery thermal management control method provided in the foregoing method embodiments, and can achieve the same technical effect, and in order to avoid repetition, details are not repeated here.
An embodiment of the present application further provides a computer program product, where the computer program product includes a computer instruction, and when the computer program product runs on a processor, the processor is enabled to execute the computer instruction, so as to implement each process of the battery thermal management control method provided in the foregoing method embodiment, and achieve the same technical effect, and in order to avoid repetition, details are not described here again.
The embodiment of the present application further provides a chip, where the chip includes a processor and a communication interface, the communication interface is coupled to the processor, and the processor is configured to execute a program or an instruction to implement each process of the above embodiment of the battery thermal management control method, and can achieve the same technical effect, and in order to avoid repetition, the details are not repeated here.
It should be understood that the chips mentioned in the embodiments of the present application may also be referred to as system-on-chip, system-on-chip or system-on-chip, etc.
In the several embodiments provided in the present application, it should be understood that the disclosed system, apparatus, server and method may be implemented in other ways. For example, the above-described apparatus embodiments are merely illustrative, and for example, the division of the units is only one logical division, and other divisions may be realized in practice, for example, a plurality of units or components may be combined or integrated into another system, or some features may be omitted, or not executed. In addition, the shown or discussed mutual coupling or direct coupling or communication connection may be an indirect coupling or communication connection through some interfaces, devices or units, and may be in an electrical, mechanical or other form.
The units described as separate parts may or may not be physically separate, and parts displayed as units may or may not be physical units, may be located in one place, or may be distributed on a plurality of network units. Some or all of the units can be selected according to actual needs to achieve the purpose of the solution of the embodiment.
In addition, functional units in the embodiments of the present application may be integrated into one processing unit, or each unit may exist alone physically, or two or more units are integrated into one unit. The integrated unit can be realized in a form of hardware, and can also be realized in a form of a software functional unit.
The integrated unit, if implemented in the form of a software functional unit and sold or used as a stand-alone product, may be stored in a computer readable storage medium. Based on such understanding, the technical solution of the present application may be substantially implemented or contributed to by the prior art, or all or part of the technical solution may be embodied in a software product, which is stored in a storage medium and includes instructions for causing a computer device (which may be a personal computer, a server, or a network device) to execute all or part of the steps of the method according to the embodiments of the present application. And the aforementioned storage medium includes: a U-disk, a removable hard disk, a Read-Only Memory (ROM), a Random Access Memory (RAM), a magnetic disk or an optical disk, and other various media capable of storing program codes.
The above embodiments are only used to illustrate the technical solutions of the present application, and not to limit the same; although the present application has been described in detail with reference to the foregoing embodiments, it should be understood by those of ordinary skill in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; and such modifications or substitutions do not depart from the spirit and scope of the corresponding technical solutions of the embodiments of the present application.

Claims (10)

1. A battery thermal management control method is applied to a battery thermal management system, the battery thermal management system is used for managing N battery pipelines, each battery pipeline comprises a battery module, N is an integer greater than 1, and the method comprises the following steps:
determining at least two battery modules needing temperature adjustment according to the temperature of each battery module in the N battery pipelines;
determining the serial connection mode of each battery pipeline corresponding to the at least two battery modules according to the temperature conditions of the at least two battery modules;
the determining the series connection mode of the battery pipelines corresponding to the at least two battery modules according to the temperature conditions of the at least two battery modules comprises: sequencing according to the temperature value of each battery module in the at least two battery modules, and determining the sequence of the at least two battery modules; and adjusting the arrangement order according to the temperature change rate of each of the at least two battery modules to determine a series order.
2. The method of claim 1, wherein said adjusting the rank order to determine the series order based on the rate of temperature change of each of the at least two battery modules comprises:
adjusting the sequence of two battery modules meeting a preset condition in the arrangement sequence, and determining the series connection sequence;
wherein the predetermined condition includes: in the two battery modules, the difference value between the temperature value of the first battery module and the temperature value of the second battery module is greater than or equal to a first difference threshold value, and the difference value between the temperature change rate of the first battery module and the temperature change rate of the second battery module is greater than or equal to a second difference threshold value.
3. The method according to claim 1 or 2, wherein the determining the series connection mode of the battery pipelines corresponding to the at least two battery modules according to the temperature conditions of the at least two battery modules comprises:
under the condition that the at least two battery modules meet the target condition, determining the series connection mode of each battery pipeline corresponding to the at least two battery modules according to the temperature conditions of the at least two battery modules;
wherein the target conditions include: and the absolute value of the temperature difference value of any two adjacent battery modules in the sequence formed by sorting the at least two battery modules according to the temperature values is greater than or equal to the temperature threshold value.
4. The method of claim 3, wherein after determining at least two battery modules that need to be temperature conditioned based on the temperature of each battery module in the N battery lines, the method further comprises:
and under the condition that the at least two battery modules do not meet the target condition, determining the parallel connection mode of the battery pipelines corresponding to the at least two battery modules.
5. The method of claim 4, wherein each battery conduit further comprises a flow controller in series with the corresponding battery module; after determining the parallel connection mode of each battery pipeline corresponding to the at least two battery modules under the condition that the at least two battery modules do not meet the target condition, the method further includes:
and adjusting the opening degree of the flow controller corresponding to each battery pipeline according to the temperature value of each battery module in the at least two battery modules.
6. The method of claim 5, wherein adjusting the opening degree of the flow controller corresponding to each battery line according to the temperature value of each battery module of the at least two battery modules comprises:
and adjusting the opening degree of the flow controller corresponding to each battery pipeline according to the temperature value and the temperature change rate of each battery module in the at least two battery modules.
7. The method according to claim 1 or 2, wherein before determining the series connection mode of the battery pipes corresponding to the at least two battery modules according to the temperature conditions of the at least two battery modules, the method further comprises:
determining a temperature regulation mode according to the relationship between the temperature value of each battery module in the at least two battery modules and the temperature value of the cooling liquid;
wherein the temperature regulation mode is any one of: cooling mode, self-circulation mode, heating mode.
8. A battery thermal management control system is characterized in that the battery thermal management system is used for managing N battery pipelines, each battery pipeline comprises a battery module, and N is an integer greater than 1; the battery thermal management system includes: a determination module;
the determining module is used for determining at least two battery modules needing temperature adjustment according to the temperature of each battery module in the N battery pipelines; sequencing according to the temperature value of each battery module in the at least two battery modules, and determining the arrangement sequence of the at least two battery modules; and adjusting the arrangement sequence according to the temperature change rate of each battery module in the at least two battery modules to determine the series connection sequence of the battery pipelines corresponding to the at least two battery modules.
9. A battery thermal management control system comprising a processor, a memory, and a program or instructions stored on the memory and executable on the processor, the program or instructions when executed by the processor implementing the steps of the battery thermal management control method according to any one of claims 1 to 7.
10. A readable storage medium, on which a program or instructions are stored, which program or instructions, when executed by a processor, carry out the steps of the battery thermal management control method according to any one of claims 1 to 7.
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