Battery cell heating control method, battery cell heating control system, battery cell heating control device and storage medium

Abstract

The invention relates to a battery cell heating control method and device, a system and a storage medium. The method comprises the following steps: moving a to-be-heated battery cell to a plurality of heating positions in a time-sharing manner; heating devices at at least part of the heating positions are controlled to heat the to-be-heated battery cell according to different heating parameters; wherein the heating parameters comprise one or more of heating device structure parameters, heating power and heating frequency. By adopting the method, the battery cell can be uniformly heated.

Description

Technical Field

[0001] The present application relates to the field of battery manufacturing technology, and in particular to a battery cell heating control method and a control device, system and storage medium thereof. Background Art

[0002] With the development of technology, power batteries are widely used in electric vehicles and other fields. The battery cell is the core component of the power battery. Its manufacturing process includes a hot pressing step, that is, using an external heat source to heat the diaphragm so that the diaphragm and the pole piece are consolidated under pressure. In the above process, if the temperature is too high, the diaphragm will melt, and if the temperature is too low, it will lead to poor bonding and oversize. Therefore, uneven temperature will directly affect the bonding uniformity of the diaphragm.

[0003] There are methods in the prior art for heating battery cells using the principle of electromagnetic induction. Although the existing electromagnetic heating technology can produce a faster heating speed, its temperature distribution is still very uneven due to the characteristics of electromagnetic induction heating. Summary of the invention

[0004] Based on this, it is necessary to provide a battery cell heating control method and its control device, system and storage medium that can uniformly heat battery cells in order to address the above technical problems.

[0005] In a first aspect, the present application provides a method for controlling heating of a battery cell, the method comprising:

[0006] Move the battery cells to be heated to multiple heating positions in a time-sharing manner;

[0007] Controlling the heating device at least in part of the heating position to heat the battery core to be heated with different heating parameters;

[0008] The heating parameters include one or more of heating device structural parameters, heating power and heating frequency.

[0009] In one embodiment, different heating device structural parameters result in different heating positions on the battery cell to be heated.

[0010] In one embodiment, the air gap between the heating device and the battery cell to be heated is different under different structural parameters of the heating device.

[0011] In one embodiment, the heating parameters include heating power, and controlling the heating device at at least part of the heating position to heat the heated battery cell with different heating parameters includes:

[0012] Controlling the heating devices at at least some of the heating positions to heat the heating cores with different heating powers according to the first rule;

[0013] Among them, the first rule is that the heating power at the same heating position remains unchanged, and the heating power at different heating positions changes in sequence from large to small according to the heating sequence.

[0014] In one embodiment, the heating device is an electromagnetic induction heating device, the heating parameters include a heating frequency, and the heating device at at least part of the heating position is controlled to heat the heating cell with different heating parameters, including:

[0015] Controlling the heating devices at at least some of the heating positions to heat the heating cells at different heating frequencies according to the second rule;

[0016] Among them, the second rule is that the heating frequency at the same heating position remains unchanged, and the heating frequencies at different heating positions change in sequence from large to small according to the heating sequence.

[0017] In a second aspect, a battery cell heating control system is provided, the system comprising:

[0018] A plurality of heating devices are arranged at a plurality of heating positions in a one-to-one correspondence; the heating device comprises a plurality of symmetrically arranged heating components;

[0019] A control component, the control component is connected to the heating device, and the control component is used to execute the battery cell heating control method as claimed in any one of claims 1 to 5.

[0020] In one embodiment, the heating assembly comprises:

[0021] Multiple skeletons;

[0022] A plurality of coils, each coil being wound one by one on each frame;

[0023] A plurality of first magnetic conductors, each of which is correspondingly arranged in each frame;

[0024] The second magnetic conductor is connected to the ends of each of the first magnetic conductors respectively.

[0025] In a third aspect, a battery cell heating control device is provided, the device comprising:

[0026] A mobile control module is used to move the battery cells to be heated to multiple heating positions in a time-sharing manner;

[0027] A heating control module, used for controlling the heating devices at least in part of the heating positions to heat the heating cells with different heating parameters;

[0028] The heating parameters include one or more of heating device structural parameters, heating power and heating frequency.

[0029] In a fourth aspect, a control component is provided, including a memory and a processor, wherein the memory stores a computer program, and the processor implements the steps of the method in the above implementation when executing the computer program.

[0030] In a fifth aspect, a computer-readable storage medium is provided, on which a computer program is stored, and when the computer program is executed by a processor, the steps of the method in the above embodiment are implemented.

[0031] The above-mentioned battery cell heating control method and its control device, system and storage medium have at least the following beneficial effects:

[0032] The battery cells to be heated are moved to multiple heating positions, and the heating devices (for example, heating devices composed of multiple electromagnetic heating coil assemblies) at some of the multiple heating positions heat the battery cells to be heated with different heating parameters (including one or more of the heating device structural parameters, heating power and heating frequency), so as to perform multi-stage heating under the action of different heating parameters. In this way, a variety of heating methods such as fast first and slow later, surface first and internal later, local first and overall later can be achieved, thereby ensuring that the overall temperature of the heated battery cells is uniform while taking into account the heating speed. BRIEF DESCRIPTION OF THE DRAWINGS

[0033] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the conventional technology, the drawings required for use in the embodiments or the conventional technology descriptions are briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0034] Figure 1 A schematic diagram of an application environment of a battery cell heating control method in an embodiment;

[0035] Figure 2 Schematic diagram of a flow chart of a method for controlling heating of a battery cell in one embodiment;

[0036] Figure 3a A schematic diagram of a three-dimensional structure of a heating device composed of a plurality of heating components disposed at a first heating position in an implementation;

[0037] Figure 3b is a side view of a heating device composed of a plurality of heating components disposed at a first heating position in one embodiment;

[0038] Figure 3c is a top view of a heating device composed of a plurality of heating components disposed at a first heating position in one embodiment;

[0039] Figure 4ais a schematic diagram of a three-dimensional structure of a heating device composed of a plurality of heating components disposed at a second heating position in an implementation;

[0040] Figure 4b is a side view of a heating device composed of a plurality of heating components disposed at a second heating position in one embodiment;

[0041] Figure 4c is a top view of a heating device composed of a plurality of heating components disposed at a second heating position in one embodiment;

[0042] Figure 5 is a structural block diagram of a battery cell heating control device in one embodiment;

[0043] Figure 6 FIG. 4 is a diagram showing the internal structure of a controller in one embodiment. DETAILED DESCRIPTION

[0044] In order to facilitate understanding of the present application, the present application will be described more fully below with reference to the relevant drawings. Embodiments of the present application are provided in the drawings. However, the present application can be implemented in many different forms and is not limited to the embodiments described herein. On the contrary, the purpose of providing these embodiments is to make the disclosure of the present application more thorough and comprehensive.

[0045] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as those commonly understood by those skilled in the art to which this application belongs. The terms used herein in the specification of this application are only for the purpose of describing specific embodiments and are not intended to limit this application.

[0046] It can be understood that the terms "first", "second", etc. used in the present application can be used in this article to describe various elements, but these elements are not limited by these terms. These terms are only used to distinguish the first element from another element.

[0047] Spatially relative terms such as "under," "beneath," "below," "under," "above," "above," and the like may be used herein to describe the relationship of an element or feature shown in the figures to other elements or features. It should be understood that, in addition to the orientations shown in the figures, spatially relative terms also include different orientations of the device in use and operation. For example, if the device in the accompanying drawings is flipped, an element or feature described as "under other elements" or "under it" or "under it" will be oriented as being "above" the other elements or features. Thus, the exemplary terms "under" and "under" may include both upper and lower orientations. In addition, the device may also include additional orientations (e.g., rotated 90 degrees or other orientations), and the spatial descriptors used herein are interpreted accordingly.

[0048] It should be noted that when an element is considered to be "connected" to another element, it can be directly connected to the other element, or connected to the other element through an intermediate element. In addition, the "connection" in the following embodiments should be understood as "electrical connection", "communication connection", etc. if there is transmission of electrical signals or data between the connected objects.

[0049] When used herein, the singular forms "a", "an", and "said / the" may also include plural forms, unless the context clearly indicates otherwise. It should also be understood that the terms "include / comprise" or "have" etc. specify the presence of stated features, wholes, steps, operations, components, parts or combinations thereof, but do not exclude the possibility of the presence or addition of one or more other features, wholes, steps, operations, components, parts or combinations thereof.

[0050] As described in the background technology, there is a hot pressing process in the existing lithium battery production and manufacturing process. In the traditional lithium battery cell heating process, the cell is often heated by means of resistance wire, electric heating film, etc., and low efficiency and high energy consumption are common problems. In addition, there is also a method of heating the cell using the principle of electromagnetic induction heating technology. However, when using heating technologies such as electromagnetic heating, although the cell can be directly heated to produce a faster heating speed, due to the characteristics of electromagnetic induction heating, its temperature distribution is very uneven, and the lithium battery cell needs very strict parameter requirements for temperature control and temperature uniformity during the hot pressing process. Overheating will cause the diaphragm to melt, low temperature will cause poor bonding and oversize, and uneven temperature will affect the bonding uniformity of the diaphragm. Therefore, in the process of manufacturing lithium batteries, how to achieve uniform heating of the cell is a difficult problem to solve.

[0051] Based on the above reasons, the present invention provides a solution that can uniformly heat the battery cells.

[0052] The battery cell heating control method provided in the embodiment of the present application can be applied to Figure 1 In the application environment shown in the figure, the battery core 2 to be heated is moved to multiple heating positions (such as the first heating position 30, the second heating position 30 and the third heating position 70) in time by controlling equipment such as a conveyor belt or a robotic arm; the heating device 4 at at least some of the heating positions is controlled to heat the battery core 2 to be heated with different heating parameters; wherein the heating parameters include one or more of the structural parameters of the heating device (such as the number of electromagnetic heating coil assemblies), heating power and heating frequency.

[0053] In an exemplary embodiment, Figure 2 As shown, a method for controlling heating of a battery cell is provided, comprising the following steps S202 to S204. Among them:

[0054] S202, moving the battery cells to be heated to multiple heating positions in a time-sharing manner.

[0055] The cell to be heated may refer to a lithium-ion battery cell. The heating position may refer to the position of the cell to be heated during the heating process, for example, Figure 1 The first heating position 30 , the second heating position 30 , and the third heating position 70 shown may refer to the central position of the heating space for accommodating the battery cells to be heated in different heating devices.

[0056] Exemplarily, the temperature of the battery cell to be heated can be detected and acquired by a temperature sensor (such as an infrared temperature sensor), or the temperature of the battery cell to be heated can be determined based on the correlation between heating parameters such as the heating power and heating time of the first heating device and the temperature. It should be noted that the correlation between the above heating parameters and the temperature can be determined after collecting a large amount of experimental data. As for the movement of the battery cell to be heated, for example, the battery cell to be heated can be moved to a heating position by equipment such as a conveyor belt or a robotic arm, and heated for a certain time, or after the battery cell to be heated reaches a certain temperature, it is moved to the next heating position for heating at the next moment, and so on, until the battery cell to be heated reaches the target temperature. For example, Figure 1 As shown, when the temperature of the battery core 2 to be heated is heated to the first preset temperature at the first heating position 30, the battery core 2 to be heated can be moved to the second heating position 50 by a conveyor belt or a mechanical arm or other equipment. Specifically, for example, when a conveyor belt is used to move the battery core to be heated, the speed of the conveyor belt can be controlled according to the heating time of the first heating position and the heating time of the second heating position, as well as the distance between the first heating position and the second heating position, so as to meet the requirement that the battery core to be heated can be heated to the first preset temperature (for example, 40°C) at the first heating position and the second preset temperature (for example, 80°C) at the second heating position; for another example, when a mechanical arm is used to move the battery core to be heated, the action time of the grabbing, retracting, rotating and lifting processes of the mechanical arm can also be controlled according to the heating time of the first heating position and the heating time of the second heating position, as well as the distance between the first heating position and the second heating position, so as to meet the requirement that the battery core to be heated can be heated to the first preset temperature at the first heating position and the second preset temperature at the second heating position. It should be noted that although there are multiple heating positions, the number of heating positions to which the heated battery cell needs to be moved can be determined according to actual needs during the actual heating process; and the determination of the first preset temperature and the second preset temperature can be adjusted according to the material properties of the battery cell to be heated and the hot pressing process conditions, which is not limited here.

[0057] S204, controlling the heating device at least in part of the heating position to heat the battery cell to be heated with different heating parameters; wherein the heating parameters include one or more of the structural parameters of the heating device, the heating power and the heating frequency.

[0058] Among them, the heating device may refer to a heating device that acts on the battery core to be heated, which is usually composed of a plurality of heating components symmetrically arranged on both sides of each heating position. The structural parameters of the heating device may refer to the physical structural parameters of the heating device, including the shape, size, material, quantity and position of the heating components in the heating device. For example, the structural parameters of the heating device may be the position of the heating components (such as electromagnetic heating coil components) around the battery core to be heated. The heating power may refer to the amount of heat provided by the heating device, usually in watts (W). The greater the heating power, the faster the heating speed. For example, the heating power of a heating device is 100W, that is, it can provide 100 joules of heat per second. The heating frequency may refer to the current frequency loaded on each heating component in the heating device. For example, when the heating component is an electromagnetic heating coil component, the heating frequency may refer to the current change speed of the electromagnetic heating coil component. The electromagnetic heating coil component generates electromagnetic induction by energizing, thereby generating heat. The change in heating frequency will change the change speed of the current in the heating coil, thereby changing the heating effect. Among them, the selection of heating frequency depends on the nature of the heated object and the purpose of heating. For example, a lower heating frequency has a slower current change and slower heat transfer, which is suitable for uniform heating of the heated object. A higher heating frequency will result in a faster current change and faster heat transfer, which is suitable for local heating or rapid heating of the heated object. For example, in induction heating, the frequency of the heating coil is usually between 10 kHz and 100 kHz. A higher frequency can make the heating coil more compact and more efficient, which is suitable for small-sized heating objects. A lower frequency can provide a greater heating depth, which is suitable for large-sized heating objects. Therefore, by adjusting the heating frequency, the control of different heating depths and heating speeds of the heated object can be achieved to meet different heating needs.

[0059] For example, Figure 1As shown, after the cell 2 to be heated is heated to a certain temperature at the first heating position 30 and the cell 2 to be heated moves to the second heating position 30, the heating device 4 at the second heating position 50 can be controlled to adopt heating device structural parameters different from those of the heating device 4 at the first heating position 30 (such as the number of heating components 42 in the heating device 4 and the position of the heating components 42), and the heating power rate and heating frequency the same as those of the heating device 4 at the first heating position 30 are used to heat the cell 2 to be heated; and after the cell 2 to be heated moves to the third heating position 70, the heating device at the third heating position 70 can be controlled to adopt heating power and heating frequency different from those of the heating device 4 at the first heating position 30, and the heating device structural parameters the same as those of the heating device 4 at the first heating position 30 are used to heat the cell to be heated. It should be noted that the first heating position 30, the second heating position 50 and the third heating position 70 in the above-mentioned embodiment are only used as examples. In actual application, those skilled in the art can adaptively adjust the number and order of the heating positions, as well as the heating parameters of each heating position according to actual heating requirements.

[0060] In the above embodiment, the battery cell to be heated is moved to multiple heating positions, and the heating devices (for example, a heating device composed of multiple electromagnetic heating coil assemblies) at some of the multiple heating positions heat the battery cell to be heated with different heating parameters (including one or more of the heating device structural parameters, heating power and heating frequency), so as to perform multi-stage heating under the action of different heating parameters. In this way, a variety of heating methods such as fast first and slow later, surface first and internal later, local first and overall later can be realized, thereby ensuring that the overall temperature of the heated battery cell is uniform while taking into account the heating speed.

[0061] In an exemplary embodiment, different heating device structural parameters result in different heating positions on the battery cell to be heated.

[0062] The different heating positions acting on the battery cell to be heated may mean that different heating devices act on the heating positions of the battery cell to be heated to form a complementary effect. Figure 1 As shown, assuming that the battery cell 2 to be heated is a cubic battery cell, in the first heating position 30, the heating device 4 starts heating from the left and right ends of the cubic battery cell, and in the second heating position 30, the heating device 4 starts heating from the center of the cubic battery cell.

[0063] For example, the cell to be heated can be moved to a certain heating position to preheat part of the cell to be heated, and then moved to another heating position with different heating device structural parameters to heat the remaining part of the cell to be heated, forming heating complementarity. Figure 1As shown, two heating components 42 are symmetrically arranged in the first heating position 30 to heat the left and right ends of the heated battery core 2, and one heating component 42 is symmetrically arranged in the second heating position 50 to heat the center of the heated battery core 2.

[0064] In the above embodiment, by changing the structural parameters of the heating device such as the number of heating components in the heating device and the relative positions of the heating components and the battery cells to be heated, even when the heating device is a heating structure constructed based on the principle of electromagnetic induction heating, the heating gap caused by the eddy current gap at the previous heating position can be filled by filling it at the next heating position, thereby avoiding the eddy current gap on the battery cells to be heated caused by the characteristics of the magnetic field distribution and affecting the temperature rise uniformity, thereby ensuring the overall temperature uniformity of the heated battery cells.

[0065] In an exemplary embodiment, the air gap between the heating device and the battery cell to be heated is different under different structural parameters of the heating device.

[0066] Among them, adding an air gap may refer to setting a certain gap or isolation layer between the heating component and the battery core to be heated in the heating device to control the heating effect. For example, when the heating component is an electromagnetic heating coil component, the role of adding an air gap is to reduce the degree of coupling between the electromagnetic heating coil and the battery core to be heated, thereby reducing the efficiency and power of electromagnetic induction heating and making the heating more uniform. The size and position of the air gap need to be adjusted according to the properties and heating requirements of the battery core to be heated. When the air gap is too large or the position is inappropriate, the heating efficiency will be reduced, the heating will be uneven, or even unable to heat; when the air gap is too small or there is no air gap, the coupling degree between the heating coil and the heated object will be too high, the heating efficiency and power will be too large, and uneven heating will even burn out the electromagnetic heating coil. Therefore, when using the electromagnetic heating coil component for electromagnetic induction heating, it is necessary to reasonably set the air gap according to the properties and heating requirements of the battery core to be heated to achieve the best heating effect.

[0067] For example, Figure 1As shown, in the process of moving the battery core to be heated by using a conveyor belt or other equipment, the battery core to be heated can be kept fixed on the same horizontal plane for movement, and a heating device 4 with a smaller air gap is set in the first heating position 30, and a heating device 4 with a larger air gap is set in the second heating position 50 and the third heating position 70, so that the battery core 2 to be heated can be quickly heated in the first heating position 30, and slowly heated in the second heating position 50 and the third heating position 70. In this process, the temperature of the battery core to be heated can also be obtained through devices such as temperature sensors, and air gap negative feedback regulation can be performed in combination with the detected temperature of the battery core to be heated. For example, when it is detected that the temperature of the battery core to be heated is reduced under the current heating conditions (such as a certain heating power and heating time), the heating speed can be increased by reducing the air gap; when the temperature rises too fast, the air gap can be increased to reduce the heating speed.

[0068] In the above embodiment, different air gaps are set at different heating positions to control the heating speed of the battery cell to be heated. For example, the front section is heated quickly and the rear section is heated evenly and slowly. This can increase the heating speed of the battery cell to be heated while ensuring the uniformity of the surface temperature of the battery cell to be heated.

[0069] In an exemplary embodiment, the heating parameters include heating power, and controlling the heating devices at at least some of the heating positions to heat the heated cells with different heating parameters includes:

[0070] The heating device at at least part of the heating position is controlled by the first rule to heat the heating core with different heating powers; wherein the first rule is that the heating power at the same heating position remains unchanged, and the heating power at different heating positions changes in sequence from large to small according to the heating order.

[0071] Among them, for heating devices that use electromagnetic heating coil assemblies, the excitation current of the electromagnetic heating coil can control the strength of the magnetic field, thereby affecting the heating power. High current and strong magnetic field heat up quickly, while small current and low magnetic field heat up slowly. Therefore, by controlling the heating power of different heating devices, the heating logic control of first fast and then slow can be achieved.

[0072] For example, it can be seen from the above embodiments that rapid heating can be achieved by heating with a smaller air gap, and slow heating can be achieved by heating with a larger air gap. On this basis, the heating device with a smaller air gap can be controlled to further adopt a larger heating power, while the heating device with a larger air gap can be controlled to further adopt a smaller heating power, so as to further improve the heating speed while ensuring the uniformity of the surface temperature of the battery cell to be heated. In addition, the PID control method can also be used for heating control of the overall heating process of the battery cell to be heated. For example, a high-efficiency proportional heating method with full power and small gap is first used in some heating positions to quickly raise the temperature to a certain temperature, and then when the battery cell to be heated moves to some hot positions, the battery cell heating power is reduced by integration and differentiation to reduce the temperature rise rate, thereby accurately controlling the temperature.

[0073] In the above embodiment, the heating power is controlled to heat the battery cell to be heated in a heating manner in which the heating speed is first fast and then slow, thereby achieving precise temperature control.

[0074] In an exemplary embodiment, the heating device is an electromagnetic induction heating device, the heating parameters include a heating frequency, and the heating devices at at least a portion of the heating positions are controlled to heat the heating cells with different heating parameters, including:

[0075] The heating device at at least part of the heating position is controlled by the second rule to heat the heating cell at different heating frequencies; wherein the second rule is that the heating frequency at the same heating position remains unchanged, and the heating frequencies at different heating positions change in sequence from large to small according to the heating order.

[0076] Among them, for the heating device that is an electromagnetic induction heating device, the heating frequency is the excitation frequency formed after the current is loaded on the electromagnetic heating coil assembly. The excitation frequency mainly affects the depth of the heated object. When the frequency is high, the penetration of the magnetic field is weak, the temperature is concentrated on the surface, and the temperature of the core of the battery cell is low; when the frequency is low, the penetration of the magnetic field is strong, and the temperature difference between the surface and the core of the battery cell is reduced. When the battery cell to be heated is in a partial heating position, the heating device of the partial heating position is controlled to heat the battery cell to be heated with a higher frequency excitation frequency, so that the surface of the battery cell to be heated rises rapidly. After the battery cell to be heated moves to other heating positions, the heating devices of other heating positions are controlled to heat the battery cell to be heated with a lower frequency excitation frequency to heat the core of the battery cell, thereby reducing the temperature difference between the surface and the core, and optimizing the problem of uneven temperature in the core of the battery cell.

[0077] In the above embodiment, different heating frequencies are used in different heating positions during the heating process so that both the surface and the core of the battery cell can be fully heated. During the entire heating process, a higher heating frequency is used in the front section and a lower heating frequency is used in the back section, thereby ensuring the temperature uniformity of the surface and core of the battery cell to be heated as a whole while taking the heating speed into account.

[0078] In an exemplary embodiment, the present application also provides a battery cell heating control system, which includes multiple heating devices and a control component. The multiple heating devices are arranged in a one-to-one correspondence at multiple heating positions; the heating device includes multiple symmetrically arranged heating components; the control component is connected to the heating device, and the control component is used to execute the battery cell heating control method of the above embodiment.

[0079] Among them, the explanation of each component of the battery cell heating control system and the heating control implementation process of the system correspond to the battery cell heating control method in the above-mentioned embodiment, and can refer to the description of the above-mentioned embodiment, which will not be repeated here. It should be noted that the control component may include a conveyor belt and a controller, and under the drive of the controller, the conveyor belt can move the battery cell to be heated to each heating position. For each heating device, the magnetic field distribution can be further changed by symmetrically arranging multiple heating components to increase the heating area and improve uniformity. For example, for an electromagnetic induction heating device, since its heating component is an electromagnetic heating coil component, and the battery cell to be heated is large in size, the heating area of ​​a single electromagnetic heating coil component is limited, and the magnetic field distribution can be changed by symmetrically arranging a combination of multiple heating components to increase the heating area and improve uniformity.

[0080] In an exemplary embodiment, Figures 3a to 4c As shown, the heating assembly 42 includes a plurality of frames 422, a plurality of coils 424, a plurality of first magnetic conductors 426, and a second magnetic conductor 428. Each coil 424 is wound around each frame 422 in a one-to-one correspondence; each first magnetic conductor 426 is passed through each frame 422 in a one-to-one correspondence; and the second magnetic conductor 428 is connected to the end of each first magnetic conductor 426, respectively.

[0081] In the above embodiment, a specific and feasible implementation method is provided for the structure of the heating component.

[0082] It should be understood that, although the various steps in the flowcharts involved in the above-mentioned embodiments are displayed in sequence according to the indication of the arrows, these steps are not necessarily executed in sequence according to the order indicated by the arrows. Unless there is a clear explanation in this article, the execution of these steps does not have a strict order restriction, and these steps can be executed in other orders. Moreover, at least a part of the steps in the flowcharts involved in the above-mentioned embodiments can include multiple steps or multiple stages, and these steps or stages are not necessarily executed at the same time, but can be executed at different times, and the execution order of these steps or stages is not necessarily to be carried out in sequence, but can be executed in turn or alternately with other steps or at least a part of the steps or stages in other steps.

[0083] Based on the same inventive concept, the embodiment of the present application also provides a cell heating control device for implementing the cell heating control method involved above. The implementation scheme for solving the problem provided by the device is similar to the implementation scheme recorded in the above method, so the specific limitations in one or more cell heating control device embodiments provided below can refer to the limitations of the cell heating control method above, and will not be repeated here.

[0084] In an exemplary embodiment, Figure 5 As shown, a battery cell heating control device is provided, the device comprising:

[0085] The movement control module 502 is used to move the battery cells to be heated to multiple heating positions in a time-sharing manner.

[0086] The heating control module 504 is used to control the heating device at least in part of the heating position to heat the heated battery cell with different heating parameters; wherein the heating parameters include one or more of the heating device structural parameters, heating power and heating frequency.

[0087] In an exemplary embodiment, the heating control module 504 includes:

[0088] The first heating control unit is used to control the heating device at at least part of the heating position to heat the heated battery cell with different heating powers according to the first rule; wherein the first rule is that the heating power at the same heating position remains unchanged, and the heating power at different heating positions changes in sequence from large to small according to the heating order.

[0089] In an exemplary embodiment, the heating control module 504 further includes:

[0090] The second heating control unit is used to control the heating device at at least part of the heating position to heat the heated battery cell with different heating frequencies according to the second rule; wherein the second rule is that the heating frequency at the same heating position remains unchanged, and the heating frequencies at different heating positions change in sequence from large to small according to the heating order.

[0091] Each module in the above-mentioned battery cell heating control device can be implemented in whole or in part by software, hardware or a combination thereof. Each of the above-mentioned modules can be embedded in or independent of a processor in a computer device in the form of hardware, or can be stored in a memory in a computer device in the form of software, so that the processor can call and execute the corresponding operations of each of the above modules.

[0092] In an exemplary embodiment, a control assembly is provided, which may be a combined device including a conveyor belt and a controller, wherein the internal structure of the controller may be as shown in FIG. Figure 6As shown. The controller includes a processor, a memory, an input / output interface (Input / Output, referred to as I / O) and a communication interface. Among them, the processor, the memory and the input / output interface are connected through a system bus, and the communication interface is connected to the system bus through the input / output interface. Among them, the processor of the controller is used to provide computing and control capabilities. The memory of the controller includes a non-volatile storage medium and an internal memory. The non-volatile storage medium stores an operating system, a computer program and a database. The internal memory provides an environment for the operation of the operating system and the computer program in the non-volatile storage medium. The database of the controller is used to store temperature data. The input / output interface of the controller is used to exchange information between the processor and an external device. The communication interface of the controller is used to communicate with an external terminal through a network connection. When the computer program is executed by the processor, a battery cell heating control method is implemented.

[0093] Those skilled in the art will understand that Figure 6 The structure shown in the figure is merely a block diagram of a partial structure related to the scheme of the present application, and does not constitute a limitation on the controller to which the scheme of the present application is applied. The specific controller may include more or fewer components than shown in the figure, or combine certain components, or have a different arrangement of components.

[0094] In an exemplary embodiment, a control component is provided, including a memory and a processor, wherein a computer program is stored in the memory, and the processor implements the steps in the above-mentioned method embodiments when executing the computer program.

[0095] In one embodiment, a computer-readable storage medium is provided, on which a computer program is stored. When the computer program is executed by a processor, the steps in the above-mentioned method embodiments are implemented.

[0096] In one embodiment, a computer program product is provided, including a computer program, which implements the steps in the above method embodiments when executed by a processor.

[0097] Those skilled in the art can understand that all or part of the processes in the above-mentioned embodiment methods can be completed by instructing the relevant hardware through a computer program, and the computer program can be stored in a non-volatile computer-readable storage medium. When the computer program is executed, it can include the processes of the embodiments of the above-mentioned methods. Among them, any reference to the memory, database or other medium used in the embodiments provided in this application can include at least one of non-volatile and volatile memory. Non-volatile memory can include read-only memory (ROM), magnetic tape, floppy disk, flash memory, optical memory, high-density embedded non-volatile memory, resistive random access memory (ReRAM), magnetoresistive random access memory (MRAM), ferroelectric random access memory (FRAM), phase change memory (PCM), graphene memory, etc. Volatile memory can include random access memory (RAM) or external cache memory, etc. As an illustration and not limitation, RAM can be in various forms, such as static random access memory (SRAM) or dynamic random access memory (DRAM). The database involved in each embodiment provided in this application may include at least one of a relational database and a non-relational database. Non-relational databases may include distributed databases based on blockchains, etc., but are not limited to this. The processor involved in each embodiment provided in this application may be a general-purpose processor, a central processing unit, a graphics processor, a digital signal processor, a programmable logic device, a data processing logic device based on quantum computing, etc., but are not limited to this.

[0098] The technical features of the above embodiments may be combined arbitrarily. To make the description concise, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0099] The above-described embodiments only express several implementation methods of the present application, and the descriptions thereof are relatively specific and detailed, but they cannot be understood as limiting the scope of the present application. It should be pointed out that, for a person of ordinary skill in the art, several variations and improvements can be made without departing from the concept of the present application, and these all belong to the protection scope of the present application. Therefore, the protection scope of the present application shall be subject to the attached claims.

Claims

1. A method for controlling heating of a battery cell, characterized in that: include: Move the battery cells to be heated to multiple heating positions in a time-sharing manner; Controlling the heating device at least in part of the heating position to heat the battery core to be heated with different heating parameters; Wherein, the heating parameters include one or more of heating device structural parameters, heating power and heating frequency.

2. The method according to claim 1, characterized in that The heating position acting on the battery core to be heated is different under different structural parameters of the heating device.

3. The method according to claim 1, characterized in that The air gap between the heating device and the battery core to be heated is different under different structural parameters of the heating device.

4. The method according to claim 1, characterized in that: The heating parameters include the heating power, and the heating device controlling at least part of the heating position heats the battery core to be heated with different heating parameters, including: Controlling the heating devices at at least some of the heating positions according to the first rule to heat the battery core to be heated with different heating powers; The first rule is that the heating power at the same heating position remains unchanged, and the heating power at different heating positions changes in sequence from large to small according to the heating sequence.

5. The method according to claim 1, characterized in that When the heating device is an electromagnetic induction heating device, the heating parameter includes a heating frequency, and the heating device controlling at least part of the heating position heats the battery cell to be heated with different heating parameters, including: Controlling the heating devices at at least some of the heating positions according to the second rule to heat the battery core to be heated at different heating frequencies; The second rule is that the heating frequency at the same heating position remains unchanged, and the heating frequencies at different heating positions change in sequence from large to small according to the heating sequence.

6. A battery cell heating control system, characterized in that: The system comprises: A plurality of heating devices are arranged in a one-to-one correspondence at a plurality of heating positions; the heating device comprises a plurality of symmetrically arranged heating components; A control component, wherein the control component is connected to the heating device, and the control component is used to execute the battery cell heating control method as described in any one of claims 1 to 5.

7. The system according to claim 6, characterized in that The heating assembly comprises: Multiple skeletons; A plurality of coils, each of the coils is wound on each of the frames in a one-to-one correspondence; A plurality of first magnetic conductors, each of which is correspondingly disposed in each of the frames; The second magnetic conductors are respectively connected to ends of the first magnetic conductors.

8. A battery cell heating control device, characterized in that: The device comprises: A mobile control module is used to move the battery cells to be heated to multiple heating positions in a time-sharing manner; A heating control module, used for controlling the heating devices at at least some of the heating positions to heat the battery cells to be heated with different heating parameters; Wherein, the heating parameters include one or more of heating device structural parameters, heating power and heating frequency.

9. A control component, comprising a memory and a processor, wherein the memory stores a computer program, characterized in that: When the processor executes the computer program, the steps of the method according to any one of claims 1 to 5 are implemented.

10. A computer-readable storage medium having a computer program stored thereon, characterized in that: When the computer program is executed by a processor, the steps of the method according to any one of claims 1 to 5 are implemented.

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