A battery module, a battery pack, and an electric device

Abstract

This utility model discloses a battery module, a battery pack, and an electrical device. The battery module includes: a housing; at least two battery cell units disposed within the housing; and a CCS assembly, the CCS assembly including a tenon plate and a connecting tab. The tenon plate has adjacent first and second mounting slots at positions corresponding to each battery cell unit. The connecting tab is disposed at the bottom of the second mounting slot. The battery cell tab of each battery cell unit is detachably installed in the corresponding second mounting slot and abuts against the connecting tab. Because the battery module is detachably connected, with each battery cell tab abutting against the connecting tab of the CCS assembly, it facilitates disassembly and replacement of damaged battery cells when a cell is damaged. The battery pack of this utility model includes the aforementioned battery module, and the electrical device of this utility model includes the aforementioned battery pack, achieving the same technical effect.

Description

Technical Field

[0001] This utility model relates to the field of battery technology, and in particular to a battery module, a battery pack, and an electrical device. Background Technology

[0002] With the rapid development of new energy vehicles, the maintenance of power battery packs has received increasing attention. Current technologies typically employ a one-piece stamped casing or a welded structure for fixation. This design makes it difficult to individually disassemble and replace damaged cells. Furthermore, the cell connections within power battery packs are usually welded, further hindering individual cell replacement and limiting the pack's flexibility, thus increasing maintenance and replacement costs. Even the process of stripping and re-welding welded connections can affect the overall performance and safety of the battery pack, necessitating a complete replacement and wasting resources.

[0003] Therefore, there is an urgent need in the market for a new type of battery module structure that can simplify the cell replacement process, reduce maintenance costs, and improve battery pack reliability. Utility Model Content

[0004] Therefore, this utility model provides a battery module, a battery pack, and an electrical device in an attempt to solve or at least alleviate at least one of the above-mentioned problems.

[0005] According to one aspect of the present invention, a battery module is provided, comprising: a housing; at least two battery cell units disposed within the housing; and a CCS assembly, the CCS assembly including a tenon plate and a connecting tab. The tenon plate has a first mounting groove and a second mounting groove adjacent to each of the battery cell units at a position corresponding to the first mounting groove. The connecting tab is disposed at the bottom of the second mounting groove, and the battery cell tab of each battery cell unit is detachably installed in the corresponding second mounting groove and abuts against the connecting tab. In the battery module according to this embodiment of the present invention, since the battery cell tab of each battery cell unit is detachably connected to the CCS assembly by abutment, and the design of the first and second mounting grooves ensures that the battery cell tab can be smoothly pushed in and fixed, it facilitates the disassembly of the battery module and replacement of the damaged battery cell when a battery cell is damaged. This structure is characterized by its simple structure and high reliability.

[0006] Optionally, in the battery module of this utility model, the first mounting groove is a square groove, the second mounting groove is a trapezoidal through hole, the cell unit is a square battery, and the cell tab is an inverted trapezoidal structure that matches the second mounting groove. This structure ensures that when the cell is a square battery, it facilitates disassembly of the battery module and replacement of the damaged cell in the event of cell damage.

[0007] Optionally, in the CCS assembly, the connecting surface of the connecting tab that abuts against the electrode tab is higher than the bottom surface of the first mounting groove. This connecting tab structure design allows for a more stable abutment connection between the connecting tab and the battery cell tab.

[0008] Optionally, at least one metal spring is provided on the connecting surface of the connecting bar, or at least one metal protrusion is provided on the connecting surface of the connecting bar. The aforementioned design of the metal spring or metal protrusion on the connecting bar can further improve the connection reliability between the connecting bar and the battery cell tab.

[0009] Optionally, the connection surfaces of the first mounting slot and the second mounting slot are sloped. This structural design can improve the efficiency of cell installation and replacement.

[0010] Optionally, the battery module further includes a positioning mechanism disposed within the housing. The positioning mechanism divides the housing into multiple accommodating spaces, each of which is used to accommodate at least one of the battery cell units. By providing this positioning mechanism, the structural stability of the module and the fixation effect of the battery cells can be improved.

[0011] Optionally, the positioning mechanism includes a frame and a dividing beam, the frame and the dividing beam forming a structure including multiple grooves. By setting this special positioning mechanism, the structural stability of the module and the fixing effect of the battery cell can be improved.

[0012] Optionally, the battery module further includes at least one clamping unit, which is disposed between two adjacent accommodating spaces, and the clamping unit abuts against the adjacent battery cell unit. By providing this clamping unit, the structural stability of the module and the fixing effect of the battery cell can be further improved.

[0013] Optionally, the clamping unit includes an upper clamping member, a lower clamping member, and a fastener. The clamping surfaces of the upper and lower clamping members are matched and can clamp the battery cells on adjacent sides. The upper and lower clamping members and the positioning mechanism are provided with corresponding mounting holes. The fastener fixes the upper and lower clamping members to the positioning mechanism through the mounting holes. By setting this clamping unit and positioning mechanism, the structural stability of the module and the fixing effect of the battery cells can be further improved.

[0014] According to another aspect of the present invention, a battery pack is provided, comprising a battery pack housing and at least one set of battery modules disposed within the battery pack housing, wherein the battery modules are as described in any of the preceding claims. Clearly, this battery pack has the same beneficial effects as the aforementioned battery modules.

[0015] According to another aspect of the present invention, an electrical device is provided, which includes the battery pack described above. Obviously, this electrical device has the same technical effects as the battery pack described above. Attached Figure Description

[0016] To achieve the foregoing and related objectives, certain illustrative aspects are described herein in conjunction with the following description and accompanying drawings. These aspects indicate various ways in which the principles disclosed herein may be practiced, and all aspects and their equivalents are intended to fall within the scope of the claimed subject matter. The foregoing and other objectives, features, and advantages of this disclosure will become more apparent from the following detailed description, taken in conjunction with the accompanying drawings. Throughout this disclosure, the same reference numerals generally refer to the same parts or elements.

[0017] Figure 1 This is a first-view structural schematic diagram of a battery module 100 according to an embodiment of the present invention;

[0018] Figure 2 This is an exploded view of a battery module 100 according to an embodiment of the present invention;

[0019] Figure 3 This is a schematic diagram of an exemplary structure of the tenon plate in a battery module 100 according to an embodiment of the present invention;

[0020] Figure 4 This is a schematic diagram of an exemplary structure of a CCS component in a battery module 100 according to an embodiment of the present invention;

[0021] Figure 5 This is a schematic diagram of an exemplary structure of a connecting plate in a battery module 100 according to an embodiment of the present invention;

[0022] Figure 6 This is a first-view structural diagram of a clamping unit in a battery module 100 according to an embodiment of the present invention.

[0023] Figure 7 This is a second-view structural schematic diagram of a clamping unit in a battery module 100 according to an embodiment of the present invention.

[0024] Figure label:

[0025] 100. Battery module; 110. Housing; 120. Positioning mechanism; 130. Cell unit; 140. CCS assembly; 150. Clamping unit; 141. Tenon plate; 142. Connecting plate; 1420. Connecting plate connecting surface; 1411. First mounting groove; 14111. Bottom surface of the first mounting groove; 1412. Second mounting groove; 1421. Metal spring; 151. Upper clamping member; 152. Lower clamping member; 153. Fastener; 154. Mounting hole. Detailed Implementation

[0026] Exemplary embodiments of the present disclosure will now be described in more detail with reference to the accompanying drawings. While exemplary embodiments of the present disclosure are shown in the drawings, it should be understood that the present disclosure may be implemented in various forms and should not be limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the scope of the disclosure to those skilled in the art.

[0027] According to some embodiments of this utility model, a battery module is provided, which will be described below in conjunction with... Figures 1 to 7 This utility model will now be described.

[0028] As shown in Figures 1-2, a battery module according to an embodiment of the present invention includes several housings 110, cell units 130, and CCS (Cells Contact System) assemblies 140. Exemplarily, the housing 110 is a square cavity with an opening on one side, formed by a bottom surface and a side surface. The cell units 130 are typically square cells, disposed within the square cavities. The cell tabs of the cell units 130 are connected to the CCS assembly 140 via a detachable connection structure. The CCS assembly, also known as a wiring harness board integration component, is used in this embodiment, as in the prior art, primarily to realize functions such as series and parallel connection of the cells.

[0029] According to one embodiment of this utility model, the battery cell tab and the CCS assembly are fixed by a mortise and tenon structure. The detachable mortise and tenon connection between the battery cell unit 130 and the CCS assembly 140 allows for the disassembly and replacement of individual cells when they are damaged. This method is simple to operate and solves the problem of difficult cell replacement operations and even the need to replace the entire battery module, which leads to resource waste, in traditional welding connection methods. It reduces electronic waste generation, lowers battery maintenance costs, and also mitigates the adverse effects of cell expansion.

[0030] According to yet another embodiment of the present invention, such as Figure 3-4As shown, the CCS assembly includes a tenon plate 141 and a connecting plate 142. The tenon plate 141 has a first mounting groove 1411 and a second mounting groove 1412. Exemplarily, the first mounting groove 1411 is a square groove, and the second mounting groove 1412 is a trapezoidal through-hole with a bottom surface the same width as the first mounting groove and a slightly narrower opening at the top. The first mounting groove 1411 and the second mounting groove 1412 are adjacent and their connection point is a hollow structure, meaning neither the first mounting groove 1411 nor the second mounting groove 1412 has a sidewall at their connection point. Further, the battery cell tab of the battery cell unit 130 is configured as an inverted trapezoidal structure that matches the second mounting groove 1412. During installation, the battery cell tab is first inserted into the first mounting groove 1411, and then the battery cell is pushed to slide the battery cell tab into the second mounting groove 1412. A connecting tab 142 is disposed at the bottom of the second mounting slot 1412. The electrode tab of each battery cell unit 130 is detachably mounted within the corresponding second mounting slot 1412 and abuts against the connecting tab. The connecting tab connecting surface 1420 of the connecting tab 142, which abuts against the electrode tab, faces inward into the second mounting slot 1412. In one specific implementation, such as... Figure 4 As shown, the connecting surface 1420 of the connecting strip 142 that abuts against the battery cell tab is slightly higher than the bottom surface 14111 of the first mounting groove. That is, the connecting surface 1420 of the connecting strip 142 is located within the second mounting groove 1412. This facilitates better contact and compression between the tab and the connecting surface when the battery cell tab is installed into the second mounting groove 1412, ensuring a stable series or parallel connection structure between the battery cells connected to the connecting strip 142. The fact that the connecting surface 1420 of the connecting strip 142 is higher than the bottom surface 14111 of the first mounting groove 1411 means that... Figure 4The arrow in the diagram points upwards. For example, in a specific example, the connecting surface 1420 of the connecting plate 142 is 1 mm higher than the bottom surface 14111 of the first mounting groove 1412. Furthermore, at the connection between the first mounting groove 1411 and the second mounting groove 1412, the connecting surface is set as a slope to allow the cell tab to slide smoothly into the second mounting groove 1412 during the cell installation process. When a damaged cell needs repair or replacement, simply slide the damaged cell towards the first mounting groove 1411 to allow the cell tab to slide into the first mounting groove 1411 to remove the damaged cell. In this embodiment, the CCS assembly includes a tenon plate and a connecting tab. The tenon plate has a first mounting groove and a second mounting groove adjacent to each cell unit. The connecting tab is located at the bottom of the second mounting groove. The cell tab of each cell unit is detachably installed in the corresponding second mounting groove and abuts against the connecting tab. Therefore, this structure can realize a detachable connection between the cell unit 130 and the CCS assembly 140. This detachable connection allows the cell unit to be disassembled individually, facilitating the repair or replacement of damaged cells, improving resource utilization, and reducing the possibility of the entire battery module being scrapped due to the damage of a single cell. Furthermore, in a specific implementation, by setting the first mounting groove as a square groove, the second mounting groove as a trapezoidal through hole, the cell unit as a square battery, and the cell tab as an inverted trapezoidal structure matching the second mounting groove, it is possible to individually repair and replace individual cells in a battery module using square batteries.

[0031] It should be noted that the square groove in this embodiment can be rectangular, square, or other shapes similar to a rectangle or square. Furthermore, in this embodiment, the first mounting groove 1411 can be a square groove, a circular groove, or any other feasible shape; the second mounting groove 1412 can be a trapezoidal through hole, or any other feasible shape. Correspondingly, the battery cell unit can also be other feasible shapes, and the electrode tabs can be various feasible shapes adapted to the first and second mounting grooves.

[0032] Furthermore, several metal spring clips 1421 are provided on the connecting surface of the connecting plate 142, such as... Figure 5 As shown. By setting a metal spring, the connecting piece 142 can form a more stable connection with the battery cell tab. According to one embodiment of the present invention, the metal spring 1421 is arched in shape, as shown... Figure 5 As shown, the arched surface of the arched metal spring protrudes into the second mounting groove 1412. Exemplarily, the height of the arch apex (the vertical distance from the highest point to the lowest point of the arch) can be set to 2 mm. Return Figure 4The first mounting groove 1411 and the second mounting groove 1412 are connected by the arched surface of the metal spring 1421, facilitating the installation of the cell electrode from the first mounting groove 1411 to the second mounting groove 1412. The arched metal spring 1421, pressed against the cell electrode, forms a stable electrical connection, improving the stability of the entire battery module. Typically, the metal spring 1421 is connected to the connecting bar by welding or stamping. In other implementations, the shape of the metal spring 1421 can be any feasible shape other than arched. Furthermore, at least one metal protrusion can be provided on the connecting surface of the connecting bar 142, which can provide a similar beneficial effect to the metal spring.

[0033] According to one embodiment of the battery module of this application, a positioning mechanism 120 is further included, which is disposed within the housing 110. The square cavity is divided into multiple receiving cavities, and battery cell units 130 are arranged within these cavities, with each cavity accommodating at least one battery cell unit 130. The inner side of the receiving cavity abuts against the battery cell unit 130, circumferentially fixing the battery cell unit 130 and improving its stability. In a specific example, (return to...) Figure 2 The positioning mechanism 120 consists of a frame and dividing beams, comprising a structure with multiple square grooves, i.e., a transverse and longitudinal beam structure. It should be noted that the housing in this invention can be a square housing or other suitable housing, and is not limited herein. Furthermore, the space divided by the positioning mechanism into the housing can be a receiving cavity or a receiving space of other shapes, and is not limited herein.

[0034] Furthermore, at least one clamping unit 150 is provided between two adjacent receiving cavities for abutting against the battery cell units 130 on both sides and positioning the battery cell units 130. The clamping unit 150 is connected to the positioning mechanism 120. In a specific example, four clamping units 150 are provided between two adjacent receiving cavities to reduce dimensional tolerances and make the positioning of the battery cell units 130 more accurate. In this embodiment, the battery cell housing is formed by the detachable housing 110, the positioning mechanism 120 and the clamping units 150, which facilitates the disassembly and replacement of the battery cells compared to the traditional one-piece stamped battery module housing.

[0035] According to one embodiment of the present invention, such as Figure 7As shown, the clamping unit 150 includes an upper clamping member 151, a lower clamping member 152, and a fastener 153. The clamping surfaces of the upper clamping member 151 and the lower clamping member 152 are inclined towards the battery cell units, so that when the upper clamping member 151 and the lower clamping member 152 slide relative to each other along the clamping surfaces, they clamp the battery cell units 130 on both sides. The upper clamping member 151 and the lower clamping member 152 are provided with corresponding mounting holes 154. Typically, the mounting holes 154 are oblong or elliptical, and their longitudinal direction is perpendicular to the contact surface between the clamping unit 150 and the battery cell unit 130. The fastener 153 fixes the upper clamping member 151 and the lower clamping member 152 to the positioning mechanism 120 through the mounting holes 154. When the upper clamping member 151 and the lower clamping member 152 are pressed together, they will slide along the clamping surface to both sides to press the battery cell units 130 on both sides, fix the battery cell units 130, prevent the battery cell units 130 from being misaligned, and increase the stability of the entire battery module.

[0036] According to the battery module of this utility model embodiment, the battery tab of each cell unit is connected to the CCS assembly through a detachable connection structure. This facilitates disassembly of the battery module and replacement of damaged cells when a cell is damaged. The ability to support the disassembly of individual damaged cells improves the flexibility of the battery module. It solves the problems of difficult cell stripping in traditional welding methods, which sometimes require replacing the entire battery pack, and the resulting resource waste. Furthermore, according to the battery module of this utility model embodiment, the CCS assembly includes a tenon plate. The tenon plate has adjacent first and second mounting grooves at positions corresponding to each cell unit. The first mounting groove is a square groove, and the second mounting groove is a trapezoidal through-hole. The battery tab is an inverted trapezoidal structure matching the second mounting groove. Therefore, the connection between the CCS assembly and the battery tab through the aforementioned tenon and mortise structure ensures that the battery tab can be smoothly pushed in and fixed. In addition, by setting an arched metal spring on the connecting bar, a stable electrical connection between the connecting bar and the electrode can be formed by squeezing the arched metal spring, thereby improving the elasticity and adaptability of the electrical connection.

[0037] According to another aspect of the present invention, a battery pack is provided, including a battery pack housing and a battery module as described above disposed within the battery pack housing, having the same beneficial effects as the battery module described above.

[0038] According to another aspect of this utility model, an electrical device is provided, including the aforementioned battery pack. Therefore, this electrical device possesses all the features and advantages of the aforementioned battery pack, which will not be repeated here.

[0039] The aforementioned battery pack can be used as a power source for the electrical device or as an energy storage unit for the electrical device. The electrical device may include, but is not limited to, mobile devices (such as mobile phones, tablets, laptops, etc.), electric vehicles (such as pure electric vehicles, hybrid electric vehicles, plug-in hybrid electric vehicles, electric bicycles, electric scooters, electric trucks, electric forklifts, etc.), ships, energy storage systems, etc.

[0040] In the description of the embodiments of this utility model, it should be understood that the terms "vertical", "horizontal", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0041] It should be understood that expressions such as "comprising" and "may include" used in this invention indicate the presence of the disclosed functions, operations, or constituent elements, and do not limit one or more additional functions, operations, and constituent elements. In this invention, terms such as "comprising" and / or "having" are to be interpreted as indicating a particular characteristic, number, operation, constituent element, component, or combination thereof, but not to exclude the existence or possibility of adding one or more other characteristics, numbers, operations, constituent elements, components, or combinations thereof.

[0042] In this embodiment of the invention, expressions including ordinal numbers such as "first" and "second" may modify the elements. However, such elements are not limited by the above expressions. For example, the above expressions do not limit the order and / or importance of the elements. The above expressions are only used to distinguish one element from other elements.

[0043] In this embodiment of the invention, the terms "exemplary" or "for example" are used to indicate that something is an example, illustration, or description. Any embodiment or design described as "exemplary" or "for example" in this embodiment of the invention should not be construed as being more preferred or advantageous than other embodiments or designs. Specifically, the use of the terms "exemplary" or "for example" is intended to present the relevant concepts in a specific manner.

[0044] In the description of the embodiments of this utility model, unless otherwise stated, "a plurality of" means two or more.

[0045] In the description of the embodiments of this utility model, when a component is referred to as "connected" or "accessed" to other components, it should be understood that the component is not only directly connected to or accessed to other components, but also that another component may exist between the component and other components. On the other hand, when a component is referred to as "directly connected" or "directly accessed" to other components, it should be understood that there is no component between them. When a component is referred to as "actively connected" to other components, it means that the positional relationship between the component and other components is variable, such as the relationship between a slide rail and a slider, where the slider can slide on the slide rail, and the slide rail and the track are actively connected. When a component is referred to as "fixedly connected" to other components, it means that the positional relationship between the component and other components after assembly is relatively fixed.

[0046] Furthermore, those skilled in the art will understand that although some embodiments described herein include certain features included in other embodiments but not others, combinations of features from different embodiments are meant to be within the scope of this invention and form different embodiments.

[0047] The above description is merely a specific embodiment of this utility model, but the protection scope of this utility model is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the technical scope disclosed in this utility model should be included within the protection scope of this utility model. Although this utility model has been described with reference to a limited number of embodiments, those skilled in the art will understand from the above description that other embodiments can be conceived within the scope of this utility model described herein. Furthermore, it should be noted that the language used in this specification has been chosen primarily for readability and instructional purposes, and not for interpreting or limiting the subject matter of this utility model. Therefore, many modifications and alterations will be apparent to those skilled in the art without departing from the scope and spirit of the appended claims. Regarding the scope of this utility model, the disclosure made herein is illustrative and not restrictive, and the protection scope of this patent application shall be determined by the scope of the claims.

Claims

1. A battery module, characterized in that, include: case; At least two battery cell units are arranged inside the housing; The CCS assembly includes a tenon plate and a connecting plate. The tenon plate has a first mounting groove and a second mounting groove adjacent to each of the battery cells at a position corresponding to each of the battery cells. The connecting plate is disposed at the bottom of the second mounting groove. The battery cell tab of each of the battery cells is detachably installed in the corresponding second mounting groove and abuts against the connecting plate.

2. The battery module as described in claim 1, characterized in that, The first mounting slot is a square slot, the second mounting slot is a trapezoidal through hole, the battery cell unit is a square battery, and the battery cell tab is an inverted trapezoidal structure that matches the second mounting slot; And / or, the connecting surface of the connecting plate that abuts against the battery cell tab is higher than the bottom surface of the first mounting groove.

3. The battery module as described in claim 1, characterized in that, The connecting surface of the connecting bar is provided with at least one metal spring piece, or the connecting surface of the connecting bar is provided with at least one metal protrusion.

4. The battery module as described in claim 1, characterized in that, The connection surfaces of the first mounting groove and the second mounting groove are sloped.

5. The battery module as described in any one of claims 1-4, characterized in that, The battery module also includes a positioning mechanism disposed within the housing, which divides the housing into multiple accommodating spaces, each of which is used to accommodate at least one of the battery cells.

6. The battery module as described in claim 5, characterized in that, The positioning mechanism includes a frame and a dividing beam, the frame and the dividing beam forming a structure including multiple grooves.

7. The battery module as described in claim 5, characterized in that, It also includes at least one clamping unit, with at least one clamping unit disposed between two adjacent accommodating spaces, the clamping unit abutting against the adjacent cell unit.

8. The battery module as described in claim 7, characterized in that, The clamping unit includes an upper clamping member, a lower clamping member, and a fastener. The clamping surfaces of the upper clamping member and the lower clamping member are matched and can clamp the battery cells on adjacent sides. The upper clamping member, the lower clamping member, and the positioning mechanism are provided with corresponding mounting holes. The fastener fixes the upper clamping member and the lower clamping member on the positioning mechanism through the mounting holes.

9. A battery pack, characterized in that, The battery pack includes a battery pack housing and at least one set of battery modules disposed within the battery pack housing, wherein the battery modules are the battery modules as described in any one of claims 1-8.

10. An electrical device, characterized in that, Includes the battery pack as described in claim 9.

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