Cell positioning device and battery module

Abstract

This application provides a battery cell positioning device and a battery module, relating to the field of new energy battery technology. The battery cell positioning device includes at least one positioning unit; the positioning unit is configured to limit the position of the battery cell; the positioning unit includes a limiting structure and a guiding structure; the guiding structure is connected to the limiting structure; the limiting structure has a receiving structure that matches the battery cell's terminal post; the receiving structure is configured to receive the battery cell's terminal post; the guiding structure has an opening larger than the opening of the limiting structure in the direction in which the battery cell's terminal post enters the limiting structure. This battery cell positioning device effectively limits the position of the battery cell, ensuring that the battery cell maintains stable and accurate positioning during production, assembly, or testing, avoiding quality problems caused by possible positional deviations of the battery cell. The opening of the guiding structure in the positioning unit is larger than the opening of the limiting structure, allowing the battery cell's terminal post to smoothly enter the limiting structure, which has a receiving structure matching the battery cell's terminal post, achieving precise positioning of the battery cell.

Description

Technical Field

[0001] This application relates to the field of new energy battery technology, and more specifically, to a cell positioning device and a battery module. Background Technology

[0002] In the manufacturing process of new energy batteries, cell positioning technology is one of the key factors affecting production efficiency and product quality. With the rapid development of the new energy battery industry, the size and shape design of cells are becoming increasingly sophisticated, and the demand for cell positioning devices is also constantly increasing.

[0003] During the production, assembly, and testing of battery cells, any inaccurate positioning can damage the internal structure of the battery, leading to safety hazards. Therefore, cell positioning devices need to possess higher safety and reliability, and be able to operate stably in complex production environments. To increase battery energy density, cells may be designed to be thinner, longer, or employ a multi-layered stacked structure.

[0004] Especially for thin blade batteries, the cell position is crucial, as only by accurately positioning the cell can the cell terminals and aluminum foil be precisely welded. To achieve this precise welding, visual positioning holes are usually created on the cell terminals. However, the time spent scanning these positioning holes accounts for a significant portion of the overall module welding time, which significantly reduces production efficiency. Utility Model Content

[0005] In view of this, the purpose of this application is to provide a battery cell positioning device to improve the problem in the prior art that the large production time loss caused by determining the position of the battery cell by scanning the positioning hole affects the production cycle and efficiency.

[0006] The battery cell positioning device includes at least one positioning unit; the positioning unit is configured to limit the position of the battery cell; the positioning unit includes a limiting structure and a guiding structure; the guiding structure is connected to the limiting structure; the limiting structure has a receiving structure that matches the battery cell terminal post of the battery cell; the receiving structure is configured to receive the battery cell terminal post; the guiding structure has an opening larger than the limiting structure opening in the direction in which the battery cell terminal post enters the limiting structure.

[0007] In the above implementation process, the battery cell positioning device restricts the position of the battery cell through at least one positioning unit. The positioning unit consists of a limiting structure and a guiding structure, with the guiding structure connected to the limiting structure. The limiting structure has a receiving structure that matches the battery cell's terminal post, used to accommodate the terminal post, thereby achieving precise positioning of the battery cell. Simultaneously, the guiding structure has an opening larger than the opening of the limiting structure in the direction in which the terminal post enters the limiting structure, facilitating the smooth entry of the terminal post into the limiting structure.

[0008] Optionally, the limiting structure includes a support rib and a base; the support rib is disposed on the base relative to the direction in which the battery cell electrode enters the limiting structure, and the support rib and the base form the receiving structure; wherein the surface of the base is configured to contact the battery cell electrode.

[0009] In the above implementation process, the limiting structure forms a receiving structure that matches the battery cell terminal through the support ribs and the base. Specifically, the support ribs are positioned relative to the direction in which the battery cell terminal enters the limiting structure, and together with the base, they form the receiving structure, ensuring that the battery cell terminal can be accurately received and positioned. It is easy to understand that the base surface is configured to contact the battery cell terminal, providing stable support and positioning reference.

[0010] Optionally, the guide structure includes a first inclined surface and a second inclined surface disposed opposite to each other; the width of the first inclined surface and the second inclined surface connected at the receiving end away from the base is greater than the width of the base; the connecting end of the first inclined surface and the second inclined surface near the base is connected to the support rib.

[0011] In the above implementation process, the guide structure forms a gradually narrowing guide channel through the relative arrangement of the first and second inclined surfaces. This provides a wider entry point in the direction the battery cell electrode enters the limiting structure, allowing the battery cell electrode to enter the limiting structure more smoothly. Simultaneously, the connecting ends of the first and second inclined surfaces near the base connect to the support ribs, ensuring a stable connection between the guide structure and the limiting structure, and improving the overall structural strength and reliability of the device.

[0012] Optionally, the battery cell positioning device further includes a connector; the connector connects and fixes multiple positioning units; wherein the multiple positioning units are arranged at equal intervals.

[0013] In the above implementation process, the battery cell positioning device connects and fixes multiple positioning units through connectors, and the multiple positioning units are set at equal intervals, so that the positioning device can simultaneously position multiple battery cells, thereby improving production efficiency and batch processing capability of positioning.

[0014] Optionally, the positioning unit is fixed on the same side of the connector.

[0015] In the above implementation process, all positioning units are on the same plane, enabling simultaneous positioning of the battery cells and reducing errors caused by inconsistent positioning unit positions. Furthermore, the fixed connectors on the same side enhance the stability of the entire device, preventing displacement of the positioning units due to external forces or vibrations during positioning, thus ensuring the reliability of battery cell positioning.

[0016] Optionally, the length of the connector is adapted to the total length of all the snap-fitted battery cells; wherein the length direction is the extension direction of the positioning unit on the connector.

[0017] In the above implementation process, the length of the connector is adapted to the total length of all the snap-in battery cells, where the length direction is the extension direction of the positioning unit on the connector, allowing the connector to cover all the battery cells that need to be positioned. That is, each positioning unit can restrict the position of its corresponding battery cell. It is easy to understand that when the length of the connector covers each battery cell, it can also provide a certain degree of protection for the battery cells.

[0018] Optionally, the thickness of the cell positioning device is adapted to the length of the cell electrode protruding from the cell; wherein the thickness direction is perpendicular to the plane where the at least one positioning unit is located.

[0019] In the above implementation process, the appropriate thickness ensures that the positioning device covers the battery cell terminals in a direction perpendicular to the plane of the positioning unit. In other words, the appropriate thickness of the positioning device can prevent the battery cell terminals from being subjected to external impacts or excessive pressure during the production process, thereby avoiding damage or deformation of the terminals and ensuring that the quality and performance of the battery cell are not affected.

[0020] Optionally, the thickness of the battery cell positioning device may range from 2 to 5 mm.

[0021] In the above implementation process, the thickness of the cell positioning device is set within the range of 2 to 5 mm based on actual production needs and the typical protruding length of the cell terminal, which can effectively meet the dual needs of cell positioning and protection.

[0022] This application embodiment also provides a battery module, the battery module including: at least one battery cell and the battery cell positioning device; the battery cell includes a battery cell terminal; the battery cell positioning device is configured to limit the battery cell terminal connected to the battery cell positioning device by a positioning unit.

[0023] In the above implementation process, the positioning unit of the cell positioning device can closely fit the cell electrode post, and restrict the position of the cell through the synergistic effect of the limiting structure and the guiding structure, preventing the cell in the battery module from shifting or shaking during assembly or testing, and also ensuring the accurate alignment of the cell electrode post, thereby improving the quality and reliability of welding or other subsequent processes.

[0024] Optionally, the battery module further includes: an aluminum bar welding assembly; the aluminum bar welding assembly is provided with welding points; the welding points are aligned with the terminals of the battery cell connected to the cell positioning device; the aluminum bar welding assembly is configured to weld to the terminals.

[0025] In the aforementioned process, the battery module achieves precise positioning and efficient welding of the cell terminals through the synergistic effect of the cell positioning device and the aluminum electrode welding assembly. This not only improves production efficiency and product quality but also enhances the stability and safety of the battery module in various application environments. Attached Figure Description

[0026] To more clearly illustrate the technical solutions of the embodiments of this application, the accompanying drawings used in the embodiments of this application will be briefly introduced below. It should be understood that the following drawings only show some embodiments of this application and should not be regarded as a limitation of the scope. For those skilled in the art, other related drawings can be obtained based on these drawings without creative effort.

[0027] Figure 1 A schematic diagram of a positioning unit for a battery cell positioning device provided in an embodiment of this application;

[0028] Figure 2 This is a schematic diagram of a battery cell positioning device provided in an embodiment of this application;

[0029] Figure 3 A front view of the connection between a battery cell and a battery cell positioning device provided in an embodiment of this application;

[0030] Figure 4 This is a schematic diagram illustrating the connection between a battery cell and a battery cell positioning device, provided as an embodiment of this application.

[0031] Icons: 1-Cell positioning device; 10-Positioning unit; 11-Limiting structure; 111-Supporting rib; 112-Base; 12-Guide structure; 121-First inclined surface; 122-Second inclined surface; 13-Accommodation structure; 2-Connector; 3-Cell; 31-Cell electrode. Detailed Implementation

[0032] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of this application, and not all of them. All other embodiments obtained by those skilled in the art based on the embodiments of this application without creative effort are within the scope of protection of the embodiments of this application.

[0033] Optionally, please refer to Figure 1 , Figure 1 This is a schematic diagram of a positioning unit of a battery cell positioning device provided in an embodiment of this application.

[0034] The battery cell positioning device 1 includes at least one positioning unit 10; the positioning unit 10 is configured to limit the position of the battery cell 3; the positioning unit 10 includes a limiting structure 11 and a guiding structure 12; the guiding structure 12 is connected to the limiting structure 11; the limiting structure 11 has a receiving structure 13 that matches the battery cell terminal 31 of the battery cell 3; the receiving structure 13 is configured to receive the battery cell terminal 31; the guiding structure 12 has an opening larger than the limiting structure 11 in the direction in which the battery cell terminal 31 enters the limiting structure 11.

[0035] In the above implementation process, the battery cell positioning device 1 utilizes at least one positioning unit 10, each positioning unit 10 being equipped with a limiting structure 11 and a guiding structure 12. The limiting structure 11 has an internal receiving structure 13 that matches the shape and size of the battery cell electrode 31. When the battery cell electrode 31 enters the limiting structure 11, it can be securely received therein, thereby fixing the position of the battery cell 3. The guiding structure 12 has an opening larger than the opening of the limiting structure 11 in the direction in which the battery cell electrode 31 enters. This provides ample space and a smooth guiding path for the battery cell electrode 31 to enter, effectively avoiding problems such as jamming or inaccurate entry due to inaccurate alignment of the battery cell electrode 31, or electrode jamming or inaccurate positioning due to an insufficiently small inlet.

[0036] Optionally, the limiting structure 11 includes a support rib 111 and a base 112; the support rib 111 is disposed on the base 112 relative to the direction in which the cell electrode 31 enters the limiting structure 11, and the support rib 111 and the base 112 form a receiving structure 13; wherein, the surface of the base 112 is configured to contact the cell electrode 31.

[0037] In the above implementation process, the support ribs 111 are symmetrically arranged on the base 112 relative to the direction in which the cell electrode 31 enters, forming a stable frame together with the base 112 to ensure that the cell electrode 31 can be accommodated and fixed. The structure of the support ribs 111 and the base 112 can effectively restrict the movement of the cell electrode 31 in all directions, ensuring that the cell 3 maintains an accurate position in subsequent production processes. The surface of the base 112 is in direct contact with the cell electrode 31, providing a flat and stable support surface for the electrode, ensuring the stability of the cell 3 during the positioning process.

[0038] In one embodiment of this application, the base 112 and the support rib 111 form a receiving structure 13. This receiving structure 13 is formed by the base 112 and the support rib 111 together, and is an overall groove-shaped structure with one open end. Viewed from the opening direction, the two sides are symmetrically arranged sidewalls, each formed by the base 112 and the support rib 111 respectively. These two sidewalls extend inward from the groove opening and converge at the bottom, forming a receiving space with a certain depth. The shape and size of the sidewalls are adapted to the shape of the battery cell electrode 31 to guide and restrict the movement of the battery cell electrode 31. When the battery cell electrode 31 is a rectangle with rounded corners, the sidewalls of the groove-shaped structure are smoothly transitioned at positions corresponding to the chamfers of the battery cell electrode 31, so that the inner wall contour of the groove matches the outer contour of the battery cell electrode 31. This ensures that the battery cell electrode 31 moves smoothly in a predetermined direction during movement, while preventing it from exceeding the set range of motion.

[0039] Similarly, if the cell electrode post 31 is circular, the sidewall of the receiving structure 13 is designed to match it with an arc shape, with a semi-circular bottom and smooth transition sidewalls on both sides, to precisely fit the shape of the circular cell electrode post 31, ensuring that it moves stably and accurately in the slot.

[0040] For ease of understanding, this receiving space resembles a "U"-shaped groove, guiding the movement direction of the battery cell terminal 31 and limiting its range of motion. In other embodiments of this application, from a cross-sectional perspective, the groove-like portion of the receiving structure 13 can be rectangular, semi-circular, V-shaped, U-shaped, etc. Rectangular grooves have right-angled sides and a horizontal bottom surface; semi-circular grooves have a smooth curved transition; V-shaped grooves have a sharp bottom; and U-shaped grooves are between rectangular and semi-circular, with a certain rounded corner transition, suitable for general connection and fixation.

[0041] Optionally, the guide structure 12 includes a first inclined surface 121 and a second inclined surface 122 disposed opposite to each other; the width of the receiving ends of the first inclined surface 121 and the second inclined surface 122 away from the base 112 is greater than the width of the base 112; the connecting ends of the first inclined surface 121 and the second inclined surface 122 near the base 112 are connected to the support rib 111.

[0042] In the above implementation process, the guide structure 12, through the relative arrangement of the first inclined surface 121 and the second inclined surface 122, forms a gradually changing guide channel to guide the battery cell electrode 31 smoothly into the limiting structure 11. The width of the connection between the receiving ends of the first inclined surface 121 and the second inclined surface 122 away from the base 112 is greater than the width of the base 112, providing a more spacious entrance for the battery cell electrode 31, allowing the electrode to be more easily aligned and enter the limiting structure 11. At the same time, the connection ends of the first inclined surface 121 and the second inclined surface 122 near the base 112 are connected to the support rib 111, which not only enhances the stability of the guide structure 12, but also ensures a smooth transition between the guide structure 12 and the limiting structure 11, so that the battery cell electrode 31 receives a uniform guiding force during the process of entering the limiting structure 11, avoiding electrode offset or jamming caused by sudden width changes. This effectively improves the efficiency and accuracy of cell 3 positioning, reduces the adjustment time caused by inaccurate alignment of cell terminals 31, and thus enhances the smoothness and speed of the entire production process.

[0043] In one embodiment of this application, a cylindrical guide structure can be used, the axis of which is perpendicular to the receiving end of the base 112, the diameter of which is adjusted according to the size of the cell electrode post 31, and the surface is smooth.

[0044] In another embodiment of this application, a conical guide structure can be used, with the apex of the cone facing the receiving end of the base, the bottom surface connected to the support rib 111, and the apex angle adjusted to a gradual shape from wide to narrow according to the shape and size of the cell electrode 31, providing a gradually converging guide path for the cell electrode 31, making it easier to align and enter the limiting structure 13.

[0045] Please combine Figure 1 See Figure 2 , Figure 2 This is a schematic diagram of a battery cell positioning device provided in an embodiment of this application.

[0046] Optionally, the battery cell positioning device 1 further includes a connector 2; the connector 2 connects and fixes multiple positioning units 10; wherein the multiple positioning units 10 are arranged at equal intervals.

[0047] In the above implementation process, the cell positioning device 1 fixes multiple positioning units 10 together through the connector 2 to form an integrated positioning system. The multiple positioning units 10 are evenly spaced, ensuring that each cell 3 is positioned uniformly and accurately during batch positioning. The equal spacing ensures that the distance between each positioning unit 10 is the same, thus maintaining the same positioning standard when positioning multiple cells 3 and avoiding positioning errors caused by uneven spacing. This enables rapid and accurate positioning of the cell 3, improving production cycle time, reducing production costs, and ensuring the stability and reliability of product quality.

[0048] Alternatively, the positioning unit 10 can also be set asymmetrically or at non-equidistant intervals as needed.

[0049] Optionally, the positioning unit 10 is fixed to the same side of the connector 2.

[0050] In the above implementation process, all positioning units 10 are on the same plane, enabling simultaneous positioning of the battery cell 3 and reducing errors caused by inconsistent positions of the positioning units 10. Furthermore, the same-side fixing design allows the connector 2 to better perform its fixing and supporting functions, enhancing the stability of the entire device and preventing displacement of the positioning units 10 due to external forces or vibrations during positioning, thereby ensuring the reliability of the battery cell 3 positioning.

[0051] Optionally, the length of the connector 2 is adapted to the total length of all the snap-fitted battery cells 3; wherein the length direction is the extension direction of the positioning unit 10 on the connector 2.

[0052] In the above implementation process, the length of the connector 2 of the cell positioning device 1 matches the total length of all the snap-fit ​​cells 3 in the extension direction of the connector 2, ensuring that the connector 2 can fully cover each cell 3 that needs to be positioned, so that each positioning unit 10 can restrict the position of the corresponding cell 3. The length adaptation of the connector 2 not only improves the positioning accuracy, but also enhances the stability and reliability of the entire device. At the same time, it also has good versatility and flexibility, and can adapt to the positioning requirements of different numbers of cells 3 by adjusting the length of the connector 2, thereby maintaining efficient and accurate positioning performance in various production scenarios. In addition, the full coverage of the connector 2 can also protect the cells 3 to a certain extent, preventing them from being interfered with or damaged by external factors during the positioning process.

[0053] Optionally, please refer to Figure 3 and Figure 4 , Figure 3 A front view of the connection between a battery cell and a battery cell positioning device provided in an embodiment of this application; Figure 4 This is a schematic diagram illustrating the connection between a battery cell and a battery cell positioning device, provided as an embodiment of this application.

[0054] Optionally, the thickness of the cell positioning device 1 is adapted to the length of the cell electrode post 31 protruding from the cell 3; wherein the thickness direction is perpendicular to the plane where at least one positioning unit 10 is located.

[0055] In the above implementation process, the thickness of the cell positioning device 1 is adjusted according to the length of the cell electrode 31 protruding from the cell 3. In a direction perpendicular to the plane of at least one positioning unit 10, the positioning device is in close contact with the cell electrode 31. This thickness adaptation allows the positioning device to restrict the position of the cell electrode 31, preventing it from shaking or shifting in the vertical direction, thereby improving the accuracy and stability of positioning. Simultaneously, the appropriate thickness also protects the cell electrode 31, preventing damage from external impacts or pressure during production, ensuring that the quality and performance of the cell 3 are not affected.

[0056] Optionally, the thickness of the cell positioning device 1 can range from 2 to 5 mm.

[0057] In the above implementation process, the thickness of the cell positioning device 1, ranging from 2 to 5 mm, is based on research into the typical protruding length of the cell electrode 31 and consideration of actual production needs. Specifically, a thickness of 2 to 5 mm allows the positioning device to closely fit the protruding portion of the cell electrode 31 in the direction perpendicular to the plane of the positioning unit 10, preventing the cell electrode 31 from shaking or shifting in the vertical direction, and also ensuring the stability of the cell electrode 31 when fixed by the housing structure 13. Furthermore, it helps protect the cell electrode 31. An appropriate thickness of the cell positioning device 1 can prevent the cell electrode 31 from being subjected to external impacts or excessive pressure during production, thereby avoiding damage or deformation of the electrode and ensuring that the quality and performance of the cell 3 are not affected. In other embodiments of this application, the thickness of the cell positioning device 1 is not limited to 2 to 5 mm, but can be set based on the actual protruding length of the cell electrode 31.

[0058] In one embodiment of this application, the cell positioning device 1 is made of plastic. While ensuring the overall strength of the cell positioning device 1, it can absorb a certain amount of vibration and impact, protecting the cell 3 and reducing the risk of damage. Plastic raw materials are relatively inexpensive, which can reduce production costs. It can achieve high cost-effectiveness, good corrosion resistance, and excellent insulation performance.

[0059] Optionally, the battery cell positioning device 1 can be made of common plastics such as polycarbonate, polyethylene, and polypropylene, each with its own characteristics in terms of strength, toughness, weight, and cost.

[0060] In one embodiment of this application, the cell positioning device 1 is made of a glass fiber composite material doped with 20% or 30% PA6.

[0061] Continue to refer to Figure 3 or Figure 4This application also provides a battery module, which includes at least one battery cell 3 and a battery cell positioning device 1; the battery cell 3 includes a battery cell terminal 31; the battery cell positioning device 1 is configured to limit the battery cell terminal 31 connected to the battery cell positioning device 1 by a positioning unit 10.

[0062] In the above implementation process, the battery module uses the cell positioning device 1 to limit the position of the cell terminal 31, ensuring the stability and accuracy of the cell 3 within the module. Specifically, the positioning unit 10 of the cell positioning device 1 can closely fit the cell terminal 31, and the position of the cell 3 is restricted by the synergistic effect of the limiting structure 11 and the guiding structure 12, preventing displacement or shaking of the cell 3 during production, assembly, or testing. This also ensures accurate alignment of the cell terminal 31, improving the quality and reliability of welding or other subsequent processes. Furthermore, the appropriate thickness of the cell positioning device 1 effectively protects the cell terminal 31 from damage caused by external impacts or pressure, further enhancing the overall performance and lifespan of the battery module.

[0063] Optionally, the battery module further includes: an aluminum bar welding assembly (not shown); the aluminum bar welding assembly is provided with welding points; the welding points are aligned with the terminals of the battery cell 3 connected to the battery cell positioning device 1; the aluminum bar welding assembly is configured to weld to the terminals.

[0064] In the above-described process, the battery module achieves the positioning and welding of the cell terminal 31 through the synergistic action of the cell positioning device 1 and the aluminum bar welding assembly. Specifically, the positioning unit 10 of the cell positioning device 1 can fit against the cell terminal 31, and the position of the cell 3 is restricted through the synergistic action of the limiting structure 11 and the guiding structure 12. This prevents the cell 3 from shifting or shaking during production, assembly, or testing, and also ensures the accurate alignment of the cell terminal 31. The welding points set on the aluminum bar welding assembly are aligned with the terminal of the cell 3 connected to the cell positioning device 1, enabling the aluminum bar welding assembly to accurately weld with the cell terminal 31, ensuring the precision and quality of the welding, and avoiding welding defects caused by inaccurate positioning. In addition, the reasonable thickness of the cell positioning device 1 can effectively protect the cell terminal 31 from damage by external impacts or pressure, further improving the overall performance and service life of the battery module.

[0065] In one embodiment of this application, the cell positioning device 1 is an injection-molded part, which has very small deviations during the manufacturing process. Therefore, the positioning deviation of the cell terminal 31 is also relatively small, enabling the cell terminal 31 to be welded to the aluminum foil welding assembly without scanning the cell terminal position. This improves upon the problem in the prior art where determining the cell position by scanning the positioning hole results in significant production time losses, affecting production cycle and efficiency.

[0066] In summary, this application provides a battery cell positioning device 1 and a battery module. The battery cell positioning device 1 includes at least one positioning unit 10. The positioning unit 10 is configured to restrict the position of the battery cell 3. The positioning unit 10 includes a limiting structure 11 and a guiding structure 12. The guiding structure 12 is connected to the limiting structure 11. The limiting structure 11 has a receiving structure 13 that matches the battery cell terminal 31 of the battery cell 3. The receiving structure 13 is configured to receive the battery cell terminal 31. The guiding structure 12 has an opening larger than the opening of the limiting structure 11 in the direction in which the battery cell terminal 31 enters the limiting structure 11. This effectively restricts the position of the battery cell 3, ensuring that the battery cell 3 maintains a stable and accurate positioning during production, assembly, or testing, and avoiding quality problems caused by possible positional deviation of the battery cell 3. The opening of the guiding structure 12 in the positioning unit 10 is larger than the opening of the limiting structure 11, allowing the battery cell terminal 31 to smoothly enter the limiting structure 11. The limiting structure 11 has a receiving structure 13 that matches the battery cell terminal 31, achieving precise positioning of the battery cell 3. The battery module achieves the positioning and welding of the cell terminals 31 through the synergistic action of the cell positioning device 1 and the aluminum bar welding assembly.

[0067] In the several embodiments provided in this application, it should be understood that the disclosed device can also be implemented in other ways. The device embodiments described above are merely illustrative. For example, the block diagrams in the accompanying drawings show the possible architecture, functions, and operations of the device according to various embodiments of this application. Furthermore, the functional modules in the various embodiments of this application can be integrated together to form an independent part, or each module can exist independently, or two or more modules can be integrated to form an independent part.

[0068] The above description is merely an embodiment of this application and is not intended to limit the scope of protection of this application. Various modifications and variations can be made to this application by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this application should be included within the scope of protection of this application. It should be noted that similar reference numerals and letters in the following figures indicate similar items; therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures.

[0069] The above description is merely a specific embodiment of this application, but the scope of protection of this application is not limited thereto. Any changes or substitutions that can be easily conceived by those skilled in the art within the scope of the technology disclosed in this application should be included within the scope of protection of this application.

[0070] It should be noted that, in this document, relational terms such as "first" and "second" are used merely to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising..." does not exclude the presence of additional identical elements in the process, method, article, or apparatus that includes said element.

Claims

1. A battery cell positioning device, characterized in that, The battery cell positioning device includes at least one positioning unit; the positioning unit is configured to limit the position of the battery cell. The positioning unit includes a limiting structure and a guiding structure; the guiding structure is connected to the limiting structure. The limiting structure has a receiving structure that matches the cell terminal of the battery cell; the receiving structure is configured to receive the cell terminal. The guide structure has an opening larger than the limiting structure in the direction in which the cell electrode enters the limiting structure.

2. The cell positioning device of claim 1, wherein, The limiting structure includes a support rib and a base; The support rib is disposed on the base relative to the direction in which the battery cell electrode enters the limiting structure, and the support rib and the base form the receiving structure; The base surface is configured to be in contact with the battery cell terminals.

3. The cell positioning device according to claim 2, characterized in that, The guide structure includes a first inclined surface and a second inclined surface that are disposed opposite to each other; The width of the first inclined surface and the second inclined surface connected at the receiving end away from the base is greater than the width of the base; The first inclined surface and the second inclined surface are connected to the supporting rib near the base.

4. The cell positioning device according to claim 2, characterized in that, The battery cell positioning device also includes a connector; The connector connects and fixes multiple positioning units; wherein the multiple positioning units are arranged at equal intervals.

5. The cell positioning device according to claim 4, characterized in that, The positioning unit is fixed on the same side of the connector.

6. The cell positioning device according to claim 4, characterized in that, The length of the connector is adapted to the total length of all the snap-fitted battery cells; wherein the length direction is the extension direction of the positioning unit on the connector.

7. The cell positioning device according to claim 1, characterized in that, The thickness of the cell positioning device is adapted to the length of the cell electrode protruding from the cell; wherein the direction of the thickness is perpendicular to the plane where the at least one positioning unit is located.

8. The cell positioning device according to claim 7, characterized in that, The thickness of the battery cell positioning device ranges from 2 to 5 mm.

9. A battery module, characterized in that, The battery module includes: at least one battery cell and a battery cell positioning device according to any one of claims 1 to 8; The battery cell includes battery cell terminals; The battery cell positioning device is configured to limit the battery cell terminals connected to the battery cell positioning device through a positioning unit.

10. The battery module according to claim 9, characterized in that, The battery module also includes: an aluminum foil welding assembly; The aluminum bar welding assembly is provided with welding points; the welding points are aligned with the electrode posts of the battery cell connected to the battery cell positioning device; the aluminum bar welding assembly is configured to weld to the electrode posts.

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