Battery cell system and operation method

Abstract

The present invention discloses a battery cell system and operating method, including a shell, a displacement sensor, multiple electrode assemblies, and a moving mechanism. The shell is telescopically adjustable in length in a set direction, and the inner cavity of the shell includes a first cavity and a second cavity. The first cavity is used to store electrolyte. The displacement sensor is provided in the shell and is used to monitor the expansion and contraction changes of the shell. Multiple electrode assemblies are used to be placed in the first cavity and the second cavity, and only the electrode assemblies in the first cavity are used for charging and discharging. The moving mechanism is provided in the shell and is used to move the electrode assemblies in the second cavity to the first cavity so that the capacity of the battery cell system matches the shell after expansion and contraction. The battery cell system of the present invention can achieve height and capacity adjustment, improve the compatibility with the battery pack sizes of different OEMs, and reduce overall production costs.

Description

Technical Field

[0001] The present invention relates to the field of battery technology, and in particular to a battery cell system and an operating method. Background Art

[0002] As the main power source for new energy vehicles, power batteries have developed rapidly in recent years. However, in the existing technology, the power cell, which is the smallest unit of the power battery, has the problem of not matching the battery pack sizes of different OEMs during production and processing, resulting in poor adaptability of the power cell and greatly increasing the production cost of the power battery. Summary of the Invention

[0003] The present invention aims to solve one of the technical problems in the related art at least to a certain extent.

[0004] To this end, an embodiment of the present invention proposes a battery cell system that can adjust the height and capacity, improves the compatibility with battery pack sizes of different OEMs, and reduces overall production costs.

[0005] An embodiment of the present invention further provides an operating method based on the above-mentioned battery cell system.

[0006] The battery cell system according to an embodiment of the present invention includes:

[0007] a housing, wherein the length of the housing in a set direction is adjustable, and the inner cavity of the housing includes a first cavity and a second cavity, wherein the first cavity is used to store electrolyte;

[0008] a displacement sensor, the displacement sensor being provided on the housing and being used to monitor the expansion and contraction changes of the housing;

[0009] a plurality of electrode assemblies, wherein the plurality of electrode assemblies are used to be placed in the first cavity and the second cavity, and only the electrode assembly in the first cavity is used to achieve charging and discharging;

[0010] A moving mechanism is provided in the shell, and is used to move the electrode assembly in the second cavity into the first cavity so that the capacity of the battery system matches the shell after the expansion and contraction adjustment.

[0011] In some embodiments, the housing comprises:

[0012] First Shell;

[0013] a second shell assembled to the first shell and movable relative to the first shell in the set direction;

[0014] A flexible member is connected between the first shell and the second shell, and is used to expand and contract when the first shell and the second shell move relative to each other and to achieve sealing between the first shell and the second shell.

[0015] In some embodiments, a driving mechanism is included, wherein the driving mechanism is disposed between the first shell and the second shell, and the driving mechanism is used to drive the first shell and the second shell to move relative to each other in the set direction.

[0016] In some embodiments, the plurality of electrode assemblies have the same capacity.

[0017] In some embodiments, the material of the electrode assembly includes nanomaterials so that the electrode assembly moved into the first cavity by the moving mechanism can be fused with the electrode assembly in the first cavity.

[0018] In some embodiments, a protective film is included, which is disposed in the shell, the first cavity and the second cavity are located in the protective film, and the top of the first cavity and the top of the second cavity are connected so that the moving mechanism can move the electrode assembly in the second cavity into the first cavity.

[0019] In some embodiments, a placement base is included, the placement base is disposed in the second cavity, and the plurality of electrode assemblies in the second cavity are all placed on the placement base.

[0020] In some embodiments, a control device is included, and the displacement sensor and the moving mechanism are electrically connected to the control device, and the control device is used to control the movement of the moving mechanism according to the expansion and contraction change monitored by the displacement sensor.

[0021] In some embodiments, a wireless communication module is included, which is provided in the mobile mechanism and is used to achieve wireless communication between the mobile mechanism and the control device.

[0022] The operating method of the battery cell system according to the embodiment of the present invention comprises the following steps:

[0023] Set the upper limit of the shell's extension size and capacity;

[0024] Acquire an adjustment size of the housing that needs to be adjusted and a matching capacity that matches the adjustment size;

[0025] Determining whether the matching capacity exceeds an upper limit of the capacity;

[0026] If the matching capacity does not exceed the upper limit of the capacity, the capacity is adjusted according to the matching capacity; if the matching capacity exceeds the upper limit of the capacity, the capacity is adjusted according to the upper limit of the capacity.

[0027] Beneficial effects: The battery cell system and operating method of the embodiment of the present invention can adjust the height and capacity of the battery cell system, improve the compatibility with the battery pack sizes of different host manufacturers, and reduce the overall production cost. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] Figure 1 Schematic diagram of a housing of a battery cell system according to an embodiment of the present invention.

[0029] Figure 2 Schematic diagram of the structure inside the shell of the battery system according to an embodiment of the present invention.

[0030] Figure 3 It is a logic block diagram of the operation method of an embodiment of the present invention.

[0031] Reference numerals:

[0032] 1-shell; 2-first shell; 3-second shell; 4-flexible part; 5-driving mechanism; 6-protective film; 7-second cavity; 8-first cavity; 9-electrode assembly; 10-moving mechanism; 11-wireless communication module; 12-placement base. DETAILED DESCRIPTION

[0033] The embodiments of the present invention are described in detail below, and examples of the embodiments are shown in the accompanying drawings. The embodiments described below with reference to the accompanying drawings are exemplary and intended to be used to explain the present invention, but should not be understood as limiting the present invention.

[0034] The present invention is based on the inventor's discovery and understanding of the following facts and problems:

[0035] Currently, the smallest unit of a power battery is the power cell. Power cells made from different material systems have different sizes, specifications, and capacities. During the development of power battery products, it is common for power cells made from the same material system to be supplied to different OEMs. Due to the differences in battery pack sizes required by different OEMs, cells made from the same material system require casings of different sizes, such as casings of different heights. The current problems are as follows:

[0036] 1) Currently, most power cells on the market use aluminum housings. Even if the width and thickness remain unchanged, changing the height of the cell housing requires re-molding, which poses a significant challenge to the cell development cycle and development costs.

[0037] 2) When the height of the battery cell increases, the capacity of the battery cell will also increase on the original basis, requiring new materials for production, which increases the production cycle of the battery cell and is not conducive to rapid product delivery.

[0038] like Figure 1 and Figure 2 As shown, the battery cell system of the embodiment of the present invention includes a housing 1 , a displacement sensor, a plurality of electrode assemblies 9 and a moving mechanism 10 .

[0039] The length of the housing 1 in a set direction can be adjusted telescopically, for example Figure 1 As shown, the setting direction can be the up and down direction, and the shell 1 can include two independent parts, and the two independent parts can be adjusted in relative displacement in the up and down directions, thereby realizing the adjustment of the overall height size of the shell 1 in the up and down directions.

[0040] The inner cavity of the housing 1 includes a first cavity 8 and a second cavity 7. The first cavity 8 is used to store electrolyte. Figure 2 As shown, the first cavity 8 and the second cavity 7 are both located in the housing 1, and the first cavity 8 and the second cavity 7 can be separated by a partition, etc., wherein the first cavity 8 can be located on the right side of the second cavity 7. When in use, the electrolyte can be poured into the first cavity 8, while the second cavity 7 is empty.

[0041] The displacement sensor is provided on the housing 1 and is used to monitor the expansion and contraction changes of the housing 1. For example, the displacement sensor can be provided on the housing 1. When two independent parts of the housing 1 are displaced relative to each other, the displacement sensor can monitor the displacement change, thereby enabling monitoring of the expansion and contraction changes of the housing 1, thereby facilitating timely understanding of the specific expansion and contraction conditions of the housing 1.

[0042] Multiple electrode assemblies 9 are used to be placed in the first cavity 8 and the second cavity 7, and only the electrode assembly 9 in the first cavity 8 is used to achieve charging and discharging. Figure 2 As shown, the electrode assembly 9 can be a battery cell winding material. There are multiple electrode assemblies 9 and they can be divided into two parts. One part of the electrode assembly 9 can be placed in the first cavity 8. Since the first cavity 8 stores electrolyte, the electrode assembly 9 can realize the normal charging and discharging function of the battery cell in the first cavity 8. The other part of the electrode assembly 9 can be placed in the second cavity 7, thereby serving as a backup.

[0043] The moving mechanism 10 is disposed in the housing 1 , and is used to move the electrode assembly 9 in the second cavity 7 into the first cavity 8 so that the capacity of the battery system matches the housing 1 after the expansion and contraction adjustment.

[0044] For example, Figure 2As shown, the moving mechanism 10 can be a small manipulator, an operating arm or other structure. The moving mechanism 10 has a grasping function. When the shell 1 is stretched and adjusted, the moving mechanism 10 can grasp the electrode assembly 9 in the second cavity 7 into the first cavity 8, and the number of electrode assemblies 9 actually grasped by the moving mechanism 10 can be determined by the expansion and contraction change monitored by the above-mentioned displacement sensor, so that the actual number of electrode assemblies 9 in the first cavity 8 can be adapted to the overall size of the shell 1 after adjustment.

[0045] In the battery cell system of the embodiment of the present invention, the shell 1 of the battery cell system itself can be telescopically adjusted, thereby meeting the need to adjust the overall appearance size of the battery cell system, thereby avoiding the situation in the prior art where the height of the battery cell shell 1 needs to be changed and a new mold needs to be opened, thereby improving the flexibility and adaptability of the battery cell system and shortening the overall development cycle and development cost.

[0046] Secondly, when the shell 1 is stretched and adjusted, the capacity of the battery cell can also be adaptively adjusted as the height of the shell 1 is adjusted, so that the capacity of the battery cell can match the size of the adjusted shell 1, avoiding the situation in the existing technology where the capacity of the battery cell needs to be changed and re-feeding is required, thereby shortening the production cycle of the battery cell.

[0047] In some embodiments, the shell 1 includes a first shell 2, a second shell 3 and a flexible member 4. The second shell 3 is assembled on the first shell 2 and is movable relative to the first shell 2 in a set direction. The flexible member 4 is connected between the first shell 2 and the second shell 3, and the flexible member 4 is used to expand and contract when the first shell 2 and the second shell 3 move relative to each other and to achieve sealing between the first shell 2 and the second shell 3.

[0048] For example, Figure 1 As shown, the first shell 2 and the second shell 3 can both be box-shaped structures, and the opening of the first shell 2 and the opening of the second shell 3 can be arranged relative to each other in the up and down directions, wherein the radial dimension of the first shell 2 can be slightly smaller than the inner diameter of the second shell 3, and the first shell 2 can be inserted into the second shell 3 and can slide in the up and down directions relative to the second shell 3.

[0049] The flexible part 4 can be made of a material with deformation properties such as rubber, bellows, etc. The flexible part 4 can be tubular and can be mounted on the outer peripheral side of the first shell 2 and the second shell 3. The top end of the flexible part 4 can be sealed and connected to the second shell 3, and the bottom end of the flexible part 4 can be sealed and connected to the first shell 2. When in use, the flexible part 4 can stretch with the relative movement of the first shell 2 and the second shell 3, and the flexible part 4 can improve the sealing of the connection between the first shell 2 and the second shell 3.

[0050] In some embodiments, the battery cell system includes a driving mechanism 5 , which is disposed between the first shell 2 and the second shell 3 , and is configured to drive the first shell 2 and the second shell 3 to move relative to each other in a set direction.

[0051] For example, the driving mechanism 5 can be a pneumatic, hydraulic or other extension mechanism, and the driving mechanism 5 can be installed between the first shell 2 and the second shell 3. When in use, the driving mechanism 5 can be extended, thereby realizing the sliding adjustment of the relative position of the first shell 2 and the second shell 3, and then realizing the adjustment of the overall height size of the shell 1, thereby realizing the automation of the size adjustment of the shell 1.

[0052] In some embodiments, the capacity of the plurality of electrode assemblies 9 is the same. For example, the size of each electrode assembly 9 is substantially the same, and the capacity of each electrode assembly 9 can be 1Ah, thereby facilitating the determination of the adjusted overall capacity by the number of electrode assemblies 9.

[0053] In some embodiments, the material of the electrode assembly 9 includes nanomaterials so that the electrode assembly 9 moved into the first cavity 8 by the moving mechanism 10 can merge with the electrode assembly 9 in the first cavity 8 .

[0054] Specifically, the nanomaterials can be carbon-based nanomaterials, metal nanomaterials, etc. The nanomaterials have certain fusion and self-healing properties. When the electrode assembly 9 in the second cavity 7 is stacked on the electrode assembly 9 in the first cavity 8 through the moving mechanism 10, the newly added electrode assembly 9 can be fused with the original electrode assembly 9 at the layering point between the two, thereby realizing the integrity of the electrode assembly 9 in the first cavity 8.

[0055] In some embodiments, as Figure 2 As shown, the battery cell system includes a protective film 6, which can be made of a thin film with certain elastic deformation properties and toughness. The protective film 6 is disposed within the housing 1, and the first cavity 8 and the second cavity 7 are located within the protective film 6. The top of the first cavity 8 and the top of the second cavity 7 are connected so that the moving mechanism 10 can move the electrode assembly 9 in the second cavity 7 into the first cavity 8. The protective film 6 can play a protective role.

[0056] In some embodiments, the battery cell system includes a placement base 12, which is disposed in the second cavity 7, and the plurality of electrode assemblies 9 in the second cavity 7 are all placed on the placement base 12. For example, Figure 2 As shown, the placement base 12 can be a rod-shaped structure, which can be fixed in the second cavity 7 and can extend in the up and down directions. The multiple electrode assemblies 9 in the second cavity 7 can be stacked on the placement base 12 in sequence along the up and down directions, thereby facilitating the installation and placement of the electrode assemblies 9 and also helping to shorten the operating stroke of the moving mechanism 10.

[0057] In some embodiments, the battery system includes a control device, the displacement sensor and the mobile mechanism 10 are electrically connected to the control device, and the control device is used to control the movement of the mobile mechanism 10 according to the expansion and contraction change monitored by the displacement sensor.

[0058] The control device can specifically be a single-chip microcomputer, or other processor with control functions. During use, the displacement data monitored by the displacement sensor can be transmitted to the control device, which can then extend the housing 1 into position based on the real-time data. The control device can then control the moving mechanism 10 to move a corresponding number of electrode assemblies 9 in the second cavity 7 into the first cavity 8, thereby achieving automated height adjustment and capacity adaptability adjustment of the housing 1.

[0059] In some embodiments, as Figure 2 As shown, the battery system includes a wireless communication module 11, which is installed in the mobile mechanism 10 and is used to realize wireless communication between the mobile mechanism 10 and the control device. Wireless communication module 11 can realize wireless signal transmission between the mobile mechanism 10 and the control device, thereby realizing wireless control of the mobile mechanism 10, avoiding the sealing considerations required by wired methods.

[0060] The following describes the operation method of the embodiment of the present invention.

[0061] like Figure 3 As shown, the operating method of the battery cell system according to the embodiment of the present invention includes the following steps:

[0062] S1: Set the upper limit of the extension size and capacity of the shell 1. For example, Figure 3 As shown, the extended dimension of the housing 1 can be converted into the height dimension of the housing 1. The upper limit of the height dimension can be regarded as the overall length dimension of the first and second housings 2 and 3 in the set direction after they are fully extended. The capacity of each electrode assembly 9 can be 1Ah. In this case, the upper limit of the capacity can be regarded as the total number of electrode assemblies 9 in the housing 1.

[0063] S2: Obtain the adjustment size of the housing 1 that needs to be adjusted and the matching capacity that matches the adjustment size. Specifically, Figure 3 As shown, the current height of the housing 1 can be read first, and then the actual operating capacity of the battery cell system can be determined by determining the number of electrode assemblies 9 currently in the first cavity 8. Then, the height of the housing 1 that needs to be adjusted, i.e., the size, can be determined according to the needs of the manufacturer, and the corresponding matching capacity can be obtained based on the determined adjusted size.

[0064] S3: Determine whether the matching capacity exceeds the upper limit of the capacity.

[0065] S4: If the matching capacity does not exceed the upper limit of the capacity, the capacity is adjusted according to the matching capacity. After the adjustment, some unused electrode assemblies 9 will remain in the second cavity 7. If the matching capacity exceeds the upper limit of the capacity, the capacity is adjusted according to the upper limit of the capacity, that is, all electrode assemblies 9 in the second cavity 7 are moved into the first cavity 8.

[0066] S5: After the height of the shell 1 and the capacity of the battery system are adjusted, you can check whether the upper computer (which can be regarded as a control device) is turned off. If the upper computer is not turned off, you can continue with the second stage or subsequent adjustments. Otherwise, the overall adjustment operation is completed.

[0067] A specific example of a battery cell system according to an embodiment of the present invention is described below.

[0068] The present invention proposes a battery cell system with adjustable height and capacity. The battery cell system mainly consists of an aluminum casing 1 (which can be considered as the casing 1), a bottom support sheet (which can be considered as the bottom side of the casing 1), a winding core (which can be considered as the electrode assembly 9), a protective film 6, and a top cover (which can be considered as the top side of the casing 1).

[0069] The cell system's control system consists of a monitoring section, a control section, and an execution section. The monitoring section can include displacement sensors, voltage sensors, wireless signal transmission devices, and communication transmission interfaces. The control section (which can be considered a control device) can consist of a single-chip microcomputer that processes monitoring signals and issues control signals. The execution section consists of an extension mechanism (which can be considered a drive mechanism 5) and a winding material movement mechanism (which can be considered a movement mechanism 10).

[0070] The entire shell 1 of the battery system includes an external shell (which can be regarded as a second shell 3) and an internal extension shell (which can be regarded as a first shell 2). The external shell and the internal extension shell are connected by a flexible material (which can be regarded as a flexible part 4) to ensure the sealing of the shell 1 before and after the height change. An extension mechanism is installed on the internal extension shell 1, and a displacement sensor is installed on the extension mechanism to monitor the current telescopic state of the shell 1. When the shell 1 needs to change in height along the Z direction, the control part sends a signal to the extension mechanism, and the internal extension shell 1 moves upward along the Z direction, driving the shell 1 to stretch in height. The synchronous control part calculates the current shell height based on the monitoring value of the displacement sensor. When the shell 1 reaches the set height value, the extension mechanism stops working.

[0071] The protective film 6 inside the housing 1 contains the positive and negative electrode winding materials and a winding material movement mechanism. The positive and negative electrode winding materials are composed of nanomaterials, making them thinner and lighter than traditional winding materials, thus occupying less space within the battery cell. The battery cell contains two sets of winding materials: one set is placed in the electrolyte and is used for current charging and discharging of the battery cell; the other set is located in a dry area. These sets are divided into several independent sections based on the corresponding relationship between winding material and capacity. Each section can be grasped and moved by the winding movement mechanism, and each section is designed to increase the battery cell capacity by 1Ah.

[0072] When the shell 1 is fully extended, the control unit calculates the required capacity increase based on the shell 1's height. The control unit then sends a signal to the winding material movement mechanism, which grabs the corresponding increased portion and moves it over the winding material currently in use in the battery cell. The desired capacity is achieved by fusing the nanomaterial at the layered area between the two sections. Wireless signal transmission is used to monitor and control the internal structure of the battery cell.

[0073] The battery cell system according to the embodiment of the present invention has the following beneficial effects:

[0074] 1. When using this battery cell system, during the battery cell development stage, by setting the extension degree of the shell and the distribution of the winding material, the battery cell height variation range and the capacity values ​​corresponding to different heights can be determined.

[0075] 2. When using this battery cell system, the housing height and capacity can be adjusted according to actual application requirements within the selected range. The housing height and capacity are set through the host computer, and the housing automatically adjusts to the set height, and the capacity is also adjusted to the allowed set value. Automatic adjustment of the battery cell height and capacity within a certain range avoids mold opening costs and cycle times caused by height changes, as well as the need to re-produce battery cells. This expands the product's applicability, shortens delivery cycles, and meets the demand for rapid market response.

[0076] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like to indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as limiting the present invention.

[0077] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of the technical features being referred to. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In the description of the present invention, "plurality" means at least two, such as two, three, etc., unless otherwise specifically defined.

[0078] In the present invention, unless otherwise specified or limited, the terms "installed," "connected," "connect," "fixed," etc. should be understood in a broad sense. For example, they can refer to fixed connection, detachable connection, or integration; mechanical connection, electrical connection, or communication; direct connection or indirect connection through an intermediate medium; internal communication between two elements or interaction between two elements, unless otherwise specified. Those skilled in the art will understand the specific meanings of the above terms in the present invention based on specific circumstances.

[0079] In the present invention, unless otherwise expressly specified or limited, when a first feature is "above" or "below" a second feature, it may mean that the first and second features are in direct contact, or that the first and second features are in indirect contact through an intermediary. Furthermore, when a first feature is "above," "above," or "above" a second feature, it may mean that the first feature is directly above or diagonally above the second feature, or simply means that the first feature is at a higher level than the second feature. When a first feature is "below," "below," or "below" a second feature, it may mean that the first feature is directly below or diagonally below the second feature, or simply means that the first feature is at a lower level than the second feature.

[0080] In the present invention, the terms "one embodiment", "some embodiments", "examples", "specific examples", or "some examples" mean that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic expressions of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art can combine and combine different embodiments or examples described in this specification and the features of different embodiments or examples without contradiction.

[0081] Although the above embodiments have been shown and described, it is understood that the above embodiments are illustrative and are not to be construed as limitations on the present invention. Changes, modifications, substitutions and variations of the above embodiments by those skilled in the art are all within the scope of protection of the present invention.

Claims

1. A battery cell system, characterized in that: include: a housing, wherein the length of the housing in a set direction is adjustable, and the inner cavity of the housing includes a first cavity and a second cavity, wherein the first cavity is used to store electrolyte; a displacement sensor, the displacement sensor being provided on the housing and being used to monitor the expansion and contraction changes of the housing; a plurality of electrode assemblies, wherein the plurality of electrode assemblies are used to be placed in the first cavity and the second cavity, and only the electrode assembly in the first cavity is used to achieve charging and discharging; a moving mechanism, the moving mechanism being disposed in the housing and configured to move the electrode assembly in the second cavity into the first cavity so that the capacity of the battery cell system matches the housing after the expansion and contraction adjustment; The housing comprises: First Shell; a second shell assembled to the first shell and movable relative to the first shell in the set direction; a flexible member connected between the first shell and the second shell, and configured to expand and contract when the first shell and the second shell move relative to each other and to achieve sealing between the first shell and the second shell; comprising a driving mechanism, the driving mechanism being disposed between the first shell and the second shell, and the driving mechanism being configured to drive the first shell and the second shell to move relative to each other in the set direction; A control device is included, the displacement sensor and the moving mechanism are electrically connected to the control device, and the control device is used to control the movement of the moving mechanism according to the expansion and contraction change monitored by the displacement sensor.

2. The battery cell system according to claim 1, characterized in that: The plurality of electrode assemblies have the same capacity.

3. The battery cell system according to claim 1, characterized in that: The material of the electrode assembly includes nanomaterials so that the electrode assembly moved into the first cavity by the moving mechanism can be fused with the electrode assembly in the first cavity.

4. The battery cell system according to claim 1, characterized in that: It includes a protective film, which is arranged in the shell, the first cavity and the second cavity are located in the protective film, and the top of the first cavity and the top of the second cavity are connected so that the moving mechanism can move the electrode assembly in the second cavity into the first cavity.

5. The battery cell system according to claim 4, characterized in that: It comprises a placement base, which is arranged in the second cavity, and the plurality of electrode assemblies in the second cavity are all placed on the placement base.

6. The battery cell system according to any one of claims 1 to 5, characterized in that: It includes a wireless communication module, which is arranged on the mobile mechanism and is used to realize wireless communication between the mobile mechanism and the control device.

7. An operating method of a battery cell system according to any one of claims 1 to 6, characterized in that: The following steps are involved: Set the upper limit of the shell's extension size and capacity; Acquire an adjustment size of the housing that needs to be adjusted and a matching capacity that matches the adjustment size; Determining whether the matching capacity exceeds an upper limit of the capacity; If the matching capacity does not exceed the upper limit of the capacity, the capacity is adjusted according to the matching capacity; If the matching capacity exceeds the upper limit of the capacity, the capacity is adjusted according to the upper limit of the capacity.

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