Battery and manufacturing method and manufacturing system thereof, and electric device

Abstract

The application provides a battery, a manufacturing method and a manufacturing system thereof, and a power utilization device. The battery comprises a battery cell, a first connecting assembly and a second connecting assembly. The battery cell comprises an electrode terminal, the first connecting assembly comprises a first clamping piece and a busbar connected to the first clamping piece. The second connecting assembly is connected to the first clamping piece, and a plurality of battery cells are clamped between the first clamping piece and the second connecting assembly, so that the busbar is at least in contact with the electrode terminals of the plurality of battery cells in a first direction and is electrically connected. The battery provided by the application is more simple and efficient in assembly operation. Moreover, the battery has stronger overall structural strength, which is beneficial to improving the impact resistance of the battery.

Description

Technical Field

[0001] This application relates to the field of battery technology, and in particular to a battery, its manufacturing method and system, and an electrical device. Background Technology

[0002] Batteries are widely used in electronic devices such as mobile phones, laptops, electric vehicles, electric cars, electric airplanes, electric ships, electric toy cars, electric toy ships, electric toy airplanes, and power tools, etc.

[0003] In the development of battery technology, in addition to improving battery performance, the efficiency of the battery production process is also a problem that needs to be considered. Therefore, how to improve battery production efficiency is a continuous improvement issue in battery technology. Summary of the Invention

[0004] This application provides a battery, its manufacturing method and system, and an electrical device that can improve battery production efficiency while ensuring battery reliability.

[0005] In a first aspect, embodiments of this application provide a battery, including a battery cell, a first connecting assembly, and a second connecting assembly; the battery cell includes electrode terminals; the first connecting assembly includes a first clamping member and a busbar, the busbar being connected to the first clamping member; the second connecting assembly is connected to the first clamping member, and a plurality of battery cells are clamped between the first clamping member and the second connecting assembly, such that the busbar and the electrode terminals of the plurality of battery cells at least abut against each other and are electrically connected along a first direction.

[0006] The battery provided in this application embodiment includes a first connecting component and a second connecting component. The first connecting component includes a first clamping member and a busbar. The busbar is connected to the first clamping member. By connecting the first clamping member and the second connecting component, multiple battery cells are clamped between the first clamping member and the second connecting component. The busbar abuts against and is electrically connected to the electrode terminals of the battery cells, thereby achieving electrical connection between the multiple battery cells. With this configuration, only the first clamping member and the second connecting component need to be connected to achieve electrical connection between the multiple battery cells, making the battery assembly operation simpler and more efficient. Furthermore, the battery formed by connecting the first connecting component and the second connecting component has stronger overall structural strength, which is beneficial to improving the battery's impact resistance.

[0007] In some embodiments, electrode terminals are disposed at both ends of the battery cell along a first direction. The second connection assembly includes a second clamping member and a busbar. The second clamping member is connected to the busbar and is connected to a first clamping member. The busbar connected to the first clamping member and the busbar connected to the second clamping member respectively abut against and are electrically connected to the electrode terminals at both ends of the battery cell along the first direction. For a battery cell with electrode terminals at both ends, the connection of the first clamping member and the second clamping member can realize the electrical connection between the electrode terminals at both ends of multiple battery cells and the busbar, thereby realizing the electrical connection of multiple battery cells and further improving the production efficiency of the battery.

[0008] In some embodiments, the battery cell further includes a housing, electrode terminals are disposed at one end of the housing along a first direction, and the housing includes a bottom shell disposed opposite to the electrode terminals along the first direction; the second connecting assembly includes a third clamping member and a current-combining member, the current-combining member being connected to the third clamping member, the third clamping member being connected to the first clamping member, and multiple battery cells being clamped between the first clamping member and the third clamping member, so that the current-combining member abuts against and is electrically connected to the bottom shells of the multiple battery cells. This configuration allows for simple and efficient electrical connection between battery cells even when the housing is charged, and can further improve battery production efficiency.

[0009] In some embodiments, the busbar has a straight section and a curved section, the curved section connecting adjacent straight sections, and the curved section protruding along a first direction. Thus, the deformation of the curved section can absorb the vibration or impact of the battery cells, thereby buffering the impact or vibration load on the busbar and reducing the risk of the busbar breaking due to vibration.

[0010] In some embodiments, the battery further includes a circuit board, with at least a portion of the busbars electrically connected to the circuit board. By incorporating the circuit board, information such as the temperature and voltage of the busbars can be collected to obtain the battery's operating status in real time and make corresponding adjustments promptly to ensure the battery's normal operation.

[0011] In some embodiments, the first clamping member includes an injection-molded portion, and the busbar includes an embedded portion and an exposed portion. The embedded portion is embedded within the injection-molded portion, and the exposed portion is exposed outside the first clamping member. This results in a stronger connection between the busbar and the first clamping member, higher positional accuracy of the busbar, and facilitates electrical connection between the busbar and the electrode terminals.

[0012] In some embodiments, the first clamping member includes an end plate and a connecting portion. The end plate is disposed at one end of the battery cell along a first direction and is used to connect to a busbar. The connecting portion is connected to the end plate and is used to connect to a second connecting assembly. The end plate has a clearance hole that extends through along the first direction for electrode terminals to pass through. Thus, the battery cell and the first clamping member have good fit, providing connection stability between the first connecting assembly and the battery cell.

[0013] In some embodiments, one of the connecting portion and the second connecting assembly has a pin, and the other has a insertion hole. The insertion hole is inserted into the pin to allow the battery cell to be clamped between the first clamping member and the second connecting assembly. The connection between the pin and the insertion hole is simple and efficient, further improving the production efficiency of the battery cell.

[0014] In some embodiments, the battery cell is cylindrical, and the first clamping member includes multiple connecting portions, with at least some battery cells having connecting portions between them. This improves the reliability of the contact between the battery cell's electrode terminals and the busbar, further enhancing the reliability of the electrical connection between battery cells.

[0015] In some embodiments, multiple battery cells are arranged in an array along a second direction and a third direction, the second direction intersecting the third direction and being perpendicular to the first direction. Two adjacent rows of battery cells along the second direction and two adjacent columns along the third direction form a quadrilateral unit. Each quadrilateral unit has a connecting portion inside and around its periphery, and the connecting portions are staggered from the battery cells along the second direction and the third direction. This arrangement can further improve the reliability of the contact between the busbar and the electrode terminals, thereby improving the reliability of the electrical connection between the battery cells.

[0016] In some embodiments, a guide groove is provided on the side of the end plate facing the battery cell. The guide groove guides the engagement between the battery cell and the end plate, and a clearance hole is provided at the bottom of the guide groove. The guide groove can guide the position of the battery cell relative to the end plate to ensure the relative position of the electrode terminals of the battery cell and the busbar of the first connection assembly, reducing the risk of connection failure due to misalignment. In addition, the guide groove can improve the structural strength of the battery and reduce the risk of misalignment between battery cells.

[0017] Secondly, embodiments of this application provide an electrical device including the battery provided in the above embodiments, the battery being used to provide electrical energy.

[0018] Thirdly, embodiments of this application provide a method for manufacturing a battery, comprising: providing a battery cell, the battery cell including electrode terminals; providing a first connecting assembly, the first connecting assembly including a first clamping member and a busbar, the busbar being connected to the first clamping member; providing a second connecting assembly; assembling the battery cell, the first connecting assembly, and the second connecting assembly, wherein the second connecting assembly is connected to the first clamping member, and a plurality of battery cells are clamped between the first clamping member and the second connecting assembly, such that the busbar and the electrode terminals of the plurality of battery cells abut against each other and are electrically connected along a first direction.

[0019] Fourthly, embodiments of this application provide a battery manufacturing system, comprising: a first providing module for providing battery cells, the battery cells including electrode terminals; a second providing module for providing a first connecting assembly, the first connecting assembly including a first clamping member and a busbar, the busbar being connected to the first clamping member; a third providing module for providing a second connecting assembly; and an assembly module for assembling the battery cells, the first connecting assembly, and the second connecting assembly, wherein the second connecting assembly is connected to the first clamping member, and a plurality of battery cells are clamped between the first clamping member and the second connecting assembly, such that the busbar and the electrode terminals of the plurality of battery cells abut against each other and are electrically connected along a first direction. Attached Figure Description

[0020] To more clearly illustrate the technical solutions of the embodiments of this application, the drawings used in the embodiments of this application will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on the drawings without creative effort.

[0021] Figure 1 This is a schematic diagram of the vehicle structure provided in the embodiments of this application;

[0022] Figure 2 This is a schematic diagram of the structure of a battery provided in an embodiment of this application;

[0023] Figure 3 This is a schematic diagram of the structure of the battery module in the battery provided in the embodiment of this application;

[0024] Figure 4 This is a schematic diagram of the structure of a single battery cell in the battery provided in the embodiments of this application;

[0025] Figure 5 This is a schematic diagram of another battery structure provided in an embodiment of this application;

[0026] Figure 6 This is an exploded structural diagram of the battery used in an embodiment of this application;

[0027] Figure 7This is a schematic diagram of the structure of the second connecting component in the battery provided in the embodiments of this application;

[0028] Figure 8 This is a front view of the battery provided in an embodiment of this application;

[0029] Figure 9 yes Figure 8 Schematic diagram of the cross-sectional structure along AA;

[0030] Figure 10 This is a schematic diagram of the structure of a first connecting component in a battery provided in an embodiment of this application;

[0031] Figure 11 This is a schematic diagram of another first connection component in the battery provided in the embodiments of this application;

[0032] Figure 12 This is a flowchart of a battery manufacturing method provided in an embodiment of this application;

[0033] Figure 13 This is a schematic diagram of the battery manufacturing system provided in the embodiments of this application.

[0034] The accompanying drawings are not necessarily drawn to scale.

[0035] Marker explanation:

[0036] 1. Vehicle; 1a. Motor; 1b. Controller;

[0037] 10. Battery; 11. First housing; 12. Second housing;

[0038] 20. Battery module;

[0039] 30. Battery cell; 31. Electrode terminal; 32. Housing; 321. Bottom shell;

[0040] 40. First connecting assembly; 41. First clamping member; 41a. Injection molding part; 411. End plate; 411a. Clearance hole; 411b. Guide groove; 412. Connecting part; 412a. Pin; 42. Manifold; 42a. Straight section; 42b. Bending section; 42c. Embedded part; 42d. Exposed part;

[0041] 50. Second connecting assembly; 50a. Insertion hole; 51. Second clamping member;

[0042] 60. Circuit board; 60a. Electrical connection part;

[0043] 100. Manufacturing system; 110. First supply module; 120. Second supply module; 130. Third supply module; 140. Assembly module;

[0044] X, first direction; Y, second direction; Z, third direction. Detailed Implementation

[0045] The embodiments of this application will be described in further detail below with reference to the accompanying drawings and examples. The detailed description of the following embodiments and the accompanying drawings are used to illustrate the principles of this application by way of example, but should not be used to limit the scope of this application, that is, this application is not limited to the described embodiments.

[0046] In the description of this application, it should be noted that, unless otherwise stated, "a plurality of" means two or more; the terms "upper," "lower," "left," "right," "inner," and "outer," etc., indicating orientation or positional relationships, are only for the convenience of describing this application 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, and therefore should not be construed as a limitation on this application. Furthermore, the terms "first," "second," etc., are used for descriptive purposes only and should not be construed as indicating or implying relative importance. "Vertical" is not vertical in the strict sense, but within the allowable tolerance range. "Parallel" is not parallel in the strict sense, but within the allowable tolerance range.

[0047] In this application, the reference to "embodiment" means that a specific feature, structure, or characteristic described in connection with an embodiment may be included in at least one embodiment of this application. The appearance of this phrase in various places throughout the specification does not necessarily refer to the same embodiment, nor is it a mutually exclusive, independent, or alternative embodiment. It will be explicitly and implicitly understood by those skilled in the art that the embodiments described in this application can be combined with other embodiments.

[0048] In the description of this application, it should also be noted that, unless otherwise expressly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a direct connection or an indirect connection through an intermediate medium. Those skilled in the art can understand the specific meaning of the above terms in this application depending on the specific circumstances.

[0049] In this application, the battery cell may include a lithium-ion secondary battery cell, a lithium-ion primary battery cell, a lithium-sulfur battery cell, a sodium-lithium-ion battery cell, a sodium-ion battery cell, or a magnesium-ion battery cell, etc., and the embodiments of this application are not limited thereto. The battery cell may be cylindrical, flat, cuboid, or other shapes, etc., and the embodiments of this application are not limited thereto. Battery cells are generally classified into three types according to their packaging method: cylindrical battery cells, cuboid / square battery cells, and pouch battery cells, and the embodiments of this application are not limited thereto.

[0050] The battery mentioned in the embodiments of this application refers to a single physical module comprising one or more battery cells to provide higher voltage and capacity. For example, the battery mentioned in this application may include a battery module or a battery pack. A battery generally includes a housing for encapsulating one or more battery cells. The housing prevents liquids or other foreign matter from affecting the charging or discharging of the battery cells.

[0051] A battery cell includes an electrode assembly and an electrolyte. The electrode assembly consists of a positive electrode, a negative electrode, and a separator. The battery cell primarily functions by the movement of metal ions between the positive and negative electrode plates. The positive electrode includes a positive current collector and a positive active material layer. The positive active material layer is coated on the surface of the positive current collector. Current collectors without the positive active material layer protrude beyond those with the coating. These uncoated current collectors are stacked together to form the positive electrode tab. Taking a lithium-ion battery as an example, the positive current collector can be made of aluminum, and the positive active material can be lithium cobalt oxide, lithium iron phosphate, ternary lithium, or lithium manganese oxide, etc. The negative electrode includes a negative current collector and a negative active material layer. The negative active material layer is coated on the surface of the negative current collector. Current collectors without the negative active material layer protrude beyond those with the coating. These uncoated current collectors are stacked together to form the negative electrode tab. The negative current collector can be made of copper, and the negative active material can be carbon or silicon, etc. The diaphragm can be made of PP or PE, etc. Furthermore, the electrode assembly can be a wound structure or a stacked structure; the embodiments of this application are not limited to these.

[0052] After discovering the problem of low battery production efficiency, the inventors systematically analyzed and studied the battery manufacturing process and battery structure. They found that existing battery production processes require busbars to electrically connect the electrode terminals of individual battery cells to achieve series or parallel connections. Typically, the busbars are welded to the electrode terminals. However, since a battery consists of multiple individual cells, welding the electrode terminals of each cell to the busbar is time-consuming and severely impacts battery production efficiency.

[0053] Based on the problems discovered by the inventors, the inventors have improved the structure of the battery. The technical solutions described in the embodiments of this application are applicable to batteries and their manufacturing methods and systems, as well as electrical devices containing batteries.

[0054] The battery provided according to an embodiment of this application includes a battery cell, a first connecting assembly, and a second connecting assembly. The battery cell includes electrode terminals, and the first connecting assembly includes a first clamping member and a busbar, with the busbar connected to the first clamping member. The second connecting assembly is connected to the first clamping member, and multiple battery cells are clamped between the first clamping member and the second connecting assembly, such that the busbar abuts against and is electrically connected to the electrode terminals of the multiple battery cells along a first direction.

[0055] According to the battery provided in the embodiments of this application, a busbar is connected to a first connecting component. Through the connection of the first connecting component and the second connecting component, the busbar and the electrode terminals are connected in parallel and electrically. Therefore, in the battery production process, only the connection of the first connecting component and the second connecting component needs to be realized to realize the electrical connection between multiple battery cells and the busbar. The operation is simple and efficient.

[0056] Electrical devices can include vehicles, mobile phones, portable devices, laptops, ships, spacecraft, electric toys, and power tools, etc. Vehicles can be gasoline-powered cars, natural gas-powered cars, or new energy vehicles; new energy vehicles can be pure electric vehicles, hybrid electric vehicles, or range-extended electric vehicles, etc. Spacecraft include airplanes, rockets, space shuttles, and spacecraft, etc. Electric toys include stationary or mobile electric toys, such as game consoles, electric car toys, electric ship toys, and electric airplane toys, etc. Power tools include metal cutting power tools, grinding power tools, assembly power tools, and railway power tools, such as electric drills, electric grinders, electric wrenches, electric screwdrivers, electric hammers, impact drills, concrete vibrators, and electric planers, etc. This application does not impose any special limitations on the above-mentioned electrical devices.

[0057] For ease of explanation, the following embodiments will use a vehicle as an example of an electrical device.

[0058] like Figure 1 As shown, a battery 10 is installed inside the vehicle 1. The battery 10 can be located at the bottom, front, or rear of the vehicle 1. The battery 10 can be used to power the vehicle 1; for example, the battery 10 can serve as the operating power source for the vehicle 1.

[0059] Vehicle 1 may also include controller 1b and motor 1a. Controller 1b is used to control the battery 10 to power motor 1a, for example, for the power needs of vehicle 1 during starting, navigation and driving.

[0060] In some embodiments of this application, the battery 10 can not only serve as the operating power source for the vehicle 1, but also as the driving power source for the vehicle 1, replacing or partially replacing fuel or natural gas to provide driving power for the vehicle 1.

[0061] See Figure 2 As shown, battery 10 includes battery cells ( Figure 2 (Not shown). The battery 10 may also include a housing for containing individual battery cells.

[0062] The enclosure is used to house individual battery cells, and the enclosure can take many different structural forms.

[0063] In some embodiments, the housing may include a first housing 11 and a second housing 12. The first housing 11 and the second housing 12 overlap each other. The first housing 11 and the second housing 12 together define a receiving space for accommodating the battery cell 30. The first housing 11 and the second housing 12 may both be hollow structures with an opening on one side. When the opening side of the first housing 11 overlaps the opening side of the second housing 12, a housing with a receiving space is formed. A sealing element may also be provided between the first housing 11 and the second housing 12 to achieve a sealed connection between the first housing 11 and the second housing 12.

[0064] In practical applications, the first box 11 can be fitted onto the top of the second box 12. The first box 11 can also be referred to as the upper box, and the second box 12 can also be referred to as the lower box.

[0065] The first box 11 and the second box 12 can be of various shapes, such as cylinders, cuboids, etc. Figure 2 For example, both the first box 11 and the second box 12 are rectangular parallelepiped structures.

[0066] In battery 10, there can be one or more individual battery cells. If there are multiple individual battery cells, they can be connected in series, parallel, or a combination thereof. A combination thereof means that multiple individual battery cells are connected in both series and parallel. Multiple individual battery cells can be directly connected in series, parallel, or a combination thereof, and then the whole assembly of multiple individual battery cells is housed in a casing. Alternatively, multiple individual battery cells can first be connected in series, parallel, or a combination thereof to form battery module 20. Multiple battery modules 20 can then be connected in series, parallel, or a combination thereof to form a whole assembly, which is then housed in a casing.

[0067] In some embodiments, such as Figure 3 As shown, in battery module 20, there are multiple battery cells 30. Multiple battery cells 30 are first connected in series, parallel, or in a mixed manner to form battery module 20. Multiple battery modules 20 are then connected in series, parallel, or in a mixed manner to form a whole, which is housed in the casing.

[0068] In some embodiments, multiple battery cells 30 in the battery module 20 can be electrically connected through a busbar 42 to achieve parallel, series, or mixed connection of multiple battery cells 30 in the battery module 20.

[0069] like Figure 4 This application provides a schematic diagram of the structure of a single battery cell in an embodiment of the battery, as shown below. Figure 5A schematic diagram of the battery structure provided in an embodiment of this application is shown, as follows: Figure 6 yes Figure 5 A schematic diagram of its decomposed structure.

[0070] like Figures 4 to 6 As shown, the battery 10 provided according to an embodiment of this application includes a battery cell 30, a first connecting assembly 40, and a second connecting assembly 50. The battery cell 30 includes electrode terminals 31. The first connecting assembly 40 includes a first clamping member 41 and a busbar 42, with the busbar 42 connected to the first clamping member 41. The second connecting assembly 50 is connected to the first clamping member 41, and a plurality of battery cells 30 are clamped between the first clamping member 41 and the second connecting assembly 50, such that the busbar 42 and the electrode terminals 31 of the plurality of battery cells 30 at least abut against each other and are electrically connected along a first direction X.

[0071] Specifically, the busbar 42 and the first clamping member 41 can be detachably connected, such as by threaded connection or snap-fit, or they can be non-detachably connected, such as by riveting, welding or integral molding.

[0072] The part where the first clamping member 41 connects to the busbar 42 can be made of insulating materials such as plastic or rubber, while the materials of other parts can be set according to specific requirements.

[0073] The connection between the second connecting component 50 and the first clamping component 41 can be a snap-fit, weld, threaded connection or riveting, as long as the second connecting component 50 and the first clamping component 41 are connected, multiple battery cells 30 can be clamped between them, and the busbar 42 abuts against the electrode terminal 31.

[0074] The connection portion 412 between the second connecting component 50 and the first clamping member 41 can be located on the periphery of the plurality of battery cells 30, or in the area between the battery cells 30, or the connection portion 412 can be provided on both the periphery of the plurality of battery cells 30 and between the battery cells 30.

[0075] The first direction X can be the relative positional direction of the battery cell 30 and the first connecting assembly 40, or it can intersect with the relative positional direction of the two. Depending on the specific shape of the busbar 42 and the electrode terminal 31, the busbar 42 and the electrode terminal 31 can abut only along the first direction X, or they can abut simultaneously along the first direction X and another direction intersecting the first direction X. For example, if the contact surface between the busbar 42 and the electrode terminal 31 is "U" shaped, then the two abut on three surfaces within the "U" shaped groove.

[0076] The battery cell 30 can be a cylindrical or a prismatic battery cell. The specific structure and shape of the busbar 42 can be designed according to the specific structural type of the battery cell 30 and the positional relationship between the electrode terminals 31, so as to achieve electrical connection between the busbar 42 and the electrode terminals 31 of different battery cells 30. Since the arrangement relationship between different battery cells 30 and the positional relationship between electrode assemblies are not exactly the same, the structure of different busbars 42 can also be different, as long as it can achieve electrical connection between the electrode terminals 31 of different battery cells 30.

[0077] The electrode terminal 31 may be provided at only one end of the battery cell 30, or the electrode terminal 31 may be provided at both ends of the battery cell 30.

[0078] In embodiments where the electrode terminal 31 is only located at one end of the battery cell 30, the first connecting component 40 may include only the busbar 42 to achieve electrical connection between the battery cells 30. Alternatively, the second connecting component 50 may also include the busbar 42 to achieve electrical connection between the battery cells 30. For example, for a cylindrical battery cell with an electrode terminal 31 at one end, both the first connecting component 40 and the second connecting component 50 may include the busbar 42. The busbar 42 of the first connecting component 40 is electrically connected to the electrode terminal 31 of the battery cell 30, while the busbar 42 of the second connecting component 50 may be electrically connected to the casing 32 of the battery cell 30. In this way, electrical connection between cylindrical battery cells with a single electrode terminal 31 can also be achieved.

[0079] In an embodiment where electrode terminals 31 are provided at both ends of the battery cell 30, the second connection component 50 may also include a busbar 42, so that the busbar 42 of the first connection component 40 and the busbar 42 of the second connection component 50 are electrically connected to the electrode terminals 31 at both ends of the battery cell 30, thereby realizing the electrical connection between different battery cells 30.

[0080] The battery 10 provided in this embodiment includes a first connecting component 40 and a second connecting component 50. The first connecting component 40 includes a first clamping member 41 and a busbar 42, which is connected to the first clamping member 41. By connecting the first clamping member 41 and the second connecting component 50, multiple battery cells 30 are clamped between the first clamping member 41 and the second connecting component 50. The busbar 42 abuts against and is electrically connected to the electrode terminals 31 of the battery cells 30, thereby achieving electrical connection between the multiple battery cells 30. With this configuration, only the first clamping member 41 and the second connecting component 50 need to be connected to achieve electrical connection between the multiple battery cells 30, making the assembly operation of the battery 10 simpler and more efficient. Furthermore, the battery 10 formed by connecting the first connecting component 40 and the second connecting component 50 has stronger overall structural strength, which is beneficial to improving the impact resistance of the battery 10.

[0081] like Figure 7 A schematic diagram of the structure of the second connecting component in the battery provided in an embodiment of this application is shown.

[0082] like Figures 4 to 7 As shown, in some embodiments, electrode terminals 31 are disposed at both ends of the battery cell 30 along the first direction X. The second connection assembly 50 includes a second clamping member 51 and a busbar 42, with the second clamping member 51 connected to the busbar 42. The clamping member is connected to the first clamping member 41, and the busbar 42 connected to the first clamping member 41 and the busbar 42 connected to the second clamping member 51 respectively abut against and are electrically connected to the electrode terminals 31 at both ends of the battery cell 30 along the first direction X.

[0083] The first clamping member 41 is connected to the second clamping member 51 to clamp multiple battery cells 30 between the first clamping member 41 and the second clamping member 51, and the electrode terminals 31 at both ends of the battery cells 30 are respectively abutted and electrically connected to the busbar 42 to realize the connection of the first connecting assembly 40 and the second connecting assembly 50. The first clamping member 41 and the second clamping member 51 can be connected by snap-fit, threaded connection, welding or riveting, etc.

[0084] The structures of the busbar 42 connected to the first clamping member 41 and the busbar 42 connected to the second clamping member 51 can be the same or different, as long as the busbar 42 is electrically connected to the electrode terminal 31.

[0085] The second connection component 50 also includes a busbar 42. For a battery cell 30 with electrode terminals 31 at both ends, the electrode terminals 31 at both ends of multiple battery cells 30 can be electrically connected to the busbar 42 through the connection of the first clamping member 41 and the second clamping member 51, thereby realizing the electrical connection of multiple battery cells 30. In this way, the production efficiency of the battery 10 can be further improved.

[0086] In some embodiments, the battery cell 30 includes a housing 32, and an electrode terminal 31 is disposed at one end of the housing 32 along a first direction X. The housing 32 includes a bottom shell 321 disposed along the first direction X opposite to the electrode terminal 31. The second connection assembly 50 includes a third clamping member and a current-combining member. The current-combining member is connected to the third clamping member, and the third clamping member is connected to the first clamping member 41. A plurality of battery cells 30 are clamped between the first clamping member 41 and the third clamping member so that the current-combining member abuts against and is electrically connected to the bottom shell 321 of the plurality of battery cells 30.

[0087] Specifically, the battery cell 30 can be a cylindrical battery cell with an electrode terminal 31 at one end. In this case, the housing 32 of the battery cell 30 can be equivalent to an electrode terminal 31 of the battery cell 30. In order to achieve electrical connection between battery cells 30, electrical connection needs to be achieved between the housings 32 of the battery cells 30 and between the electrode terminals 31 of the battery cells.

[0088] The part where the third clamping component connects to the busbar can be made of insulating materials such as plastic or rubber.

[0089] The busbar component and the third clamping component can be snap-fitted, threaded, riveted, or integrally formed, as long as they can achieve electrical connection with the electrode assembly.

[0090] By connecting the third clamping member with the first clamping member 41, multiple battery cells 30 are clamped between the first clamping member 41 and the third clamping member. The electrode terminals 31 of the battery cells 30 are abutted and electrically connected to the busbar 42, and the bottom shell 321 of the battery cells 30 is abutted and electrically connected to the busbar, so as to realize the electrical connection between the battery cells 30. With this configuration, the electrical connection between the battery cells 30 is simple and efficient, further improving the production efficiency of the battery 10.

[0091] The busbar 42 can be a flat sheet, a curved sheet, or even a block. There are no restrictions here, as long as it can achieve electrical connection with the electrode assembly of the battery cell 30.

[0092] like Figure 8 A front view of the battery provided in an embodiment of this application is shown, as follows: Figure 9 It shows Figure 8 A schematic diagram of the cross-sectional structure along AA.

[0093] like Figure 8 and Figure 9 As shown, in some embodiments, the busbar 42 has a straight section 42a and a curved section 42b, the curved section 42b connecting an adjacent straight section 42a, and the curved section 42b protruding along a first direction X.

[0094] It is understandable that during the use of the battery 10, the direction in which the battery cell 30 intersects with the first direction X, such as between the battery cells 30, may be subject to impact loads or vibration loads, resulting in certain vibrations or shaking, and the loads will be transmitted to the busbar 42. The busbar 42 is provided with a straight section 42a and a curved section 42b. The deformation of the curved section 42b can absorb the vibration or impact of the battery cell 30, thereby buffering the impact or vibration load borne by the busbar 42 and reducing the risk of the busbar 42 breaking due to vibration.

[0095] In some embodiments, the battery 10 further includes a circuit board 60, with at least a portion of the busbar 42 electrically connected to the circuit board 60.

[0096] Specifically, the circuit board 60 may be provided with an outwardly protruding electrical connection portion 60a, through which the circuit board 60 and the bus 42 are electrically connected.

[0097] Understandably, during use, the battery 10 needs to monitor the working status of the busbar 42 or the battery cell 30 in real time. By setting up the circuit board 60 and connecting it to the busbar 42, information such as the temperature and voltage of the busbar 42 can be collected to obtain the working status of the battery 10 in real time and make corresponding adjustments in a timely manner to ensure the normal operation of the battery 10.

[0098] Alternatively, the circuit board 60 can be integrated with the first clamp 41 to save space and improve the integration of the battery 10 structure.

[0099] In some embodiments, the first clamping member 41 includes an injection-molded portion 41a, and the manifold 42 includes an embedded portion 42c and an exposed portion 42d. The embedded portion 42c is embedded within the injection-molded portion 41a, and the exposed portion 42d is exposed outside the first clamping member 41.

[0100] Specifically, the embedded part 42c is used to connect with the first clamping member 41, and the exposed part 42d can be used to connect the bus 42 with the electrode terminal 31 or the circuit board 60.

[0101] Optionally, the first clamping member 41 can be integrally injection molded, and during the injection molding process, the embedding portion 42c of the manifold 42 is embedded into the first clamping member 41. The first clamping member 41 can also be partially injection molded, and during the injection molding process, the embedding portion 42c of the manifold 42 is embedded into the injection-molded portion 41a, and then the injection-molded portion 41a is connected to other parts of the first clamping member 41.

[0102] It is understandable that the first clamping member 41 is provided with an injection molding part 41a, so that the busbar 42 and the first clamping member 41 are integrally connected by injection molding, resulting in higher connection strength and higher positional accuracy of the busbar 42, which facilitates the electrical connection between the busbar 42 and the electrode terminal 31.

[0103] like Figure 10 and Figure 11 Schematic diagrams of the structures of different first clamping members provided in the embodiments of this application are shown respectively.

[0104] like Figure 10 and Figure 11 As shown, in some embodiments, the first clamping member 41 includes an end plate 411 and a connecting portion 412. The end plate 411 is disposed at one end of the battery cell 30 along the first direction X and is used to connect to the busbar 42. The connecting portion 412 is connected to the end plate 411 and is used to connect to the second connecting assembly 50. The end plate 411 has a clearance hole 411a that extends through along the first direction X, and the clearance hole 411a is used to pass through the electrode terminal 31.

[0105] Specifically, the connecting part 412 can be columnar, block-shaped or other shapes, and the shape and position of the connecting part 412 are set according to the connection form of the first connecting component 40 and the second connecting component 50.

[0106] The electrode terminal 31 of the battery cell 30 passes through the clearance hole 411a of the end plate 411 to abut against the busbar 42. The end cap of the battery cell 30 with the electrode terminal 31 connected can be fitted with the end plate 411 to improve the connection stability between the battery cell 30 and the first connection assembly 40.

[0107] like Figure 7 and Figure 11 As shown, in some embodiments, one of the connecting portion 412 and the second connecting component 50 has a pin 412a, and the other has a plug hole 50a, which is plugged into the pin 412a to allow the battery cell 30 to be clamped between the first clamping member 41 and the second connecting component 50.

[0108] Optionally, the insertion hole 50a and the pin 412a can be provided only on the outer periphery of multiple battery cells 30, or the insertion hole 50a and the pin 412a can be provided between adjacent battery cells 30.

[0109] To improve the connection reliability between the insertion hole 50a and the insertion pin 412a, a claw can be provided on one of the insertion pin 412a and the insertion hole 50a, and a slot can be provided on the other. Through the cooperation of the claw and the slot, the insertion pin 412a and the insertion hole 50a can be limited, thereby improving the connection strength between the insertion pin 412a and the insertion hole 50a, and thus improving the overall structural strength of the battery 10.

[0110] It should be noted that in embodiments where the second connecting component 50 includes a second clamping member 51 or a third clamping member, the second clamping member 51 or the third clamping member may be configured to include a pin 412a or a plug hole 50a to achieve the connection between the first connecting component 40 and the second connecting component 50.

[0111] It is understandable that by connecting the pin 412a to the insertion hole 50a, the first connecting component 40 and the second connecting component 50 are connected, thereby realizing the electrical connection between the battery cells 30. This connection method is simple and efficient, and can further improve the production efficiency of the battery cells 30.

[0112] In some embodiments, the battery cell 30 is cylindrical, and the first clamping member 41 includes a plurality of connecting portions 412, with at least a portion of the battery cells 30 having connecting portions 412 between them.

[0113] Specifically, the battery cell 30 is a cylindrical battery cell 30. During the arrangement of the battery cells 30, there will be gaps between some adjacent battery cells 30. The connecting part 412 can be set in the gap between the battery cells 30. This can reduce the extra space occupied by the connecting part 412 inside the battery 10, further improve the structural integration of the battery 10, and increase the volumetric energy density of the battery 10.

[0114] In addition, by providing multiple connecting parts 412 and connecting parts 412 between battery cells 30, the reliability of the contact between the electrode terminals 31 of the battery cells 30 and the busbar 42 can be improved, and the reliability of the electrical connection between the battery cells 30 can be further improved.

[0115] Optionally, a connecting portion 412 may be provided between some of the battery cells 30, or a connecting portion 412 may be provided on the periphery of each battery cell 30.

[0116] In some embodiments, a plurality of battery cells 30 are arranged in an array along a second direction Y and a third direction Z, the second direction Y and the third direction Z intersecting and being perpendicular to the first direction X. Two adjacent rows of battery cells 30 along the second direction Y and two adjacent columns along the third direction Z form a quadrilateral unit. Each quadrilateral unit has a connecting portion 412 inside and around its periphery, and the connecting portion 412 is staggered with the battery cells 30 along the second direction Y and the third direction Z.

[0117] The quadrilateral is the connecting line between the centers of the four battery cells 30. Each quadrilateral unit has a battery cell 30 at each of its four corners. Two adjacent battery cells 30 along the second direction Y and the third direction Z can be spaced apart or abutted against each other.

[0118] The connecting part 412 is staggered from the battery cell 30 along the second direction Y and the third direction Z. That is, the line connecting the center of the connecting part 412 and the battery cell 30 is not distributed along the second direction Y, nor along the third direction Z.

[0119] Optionally, the second direction Y can be perpendicular or not. In an embodiment where the second direction Y is perpendicular to the third direction Z, the quadrilateral is a rectangle or a square. In an embodiment where the second direction Y is not perpendicular to the third direction Z, the quadrilateral is a parallelogram.

[0120] By providing a connecting part 412 inside and around each quadrilateral unit, it can be ensured that each battery cell 30 has a connecting part 412 around its periphery. Consequently, the busbar 42, which is electrically connected to the electrode terminal 31 of the battery cell 30, also has a connecting part 412 around its periphery. This arrangement can further improve the reliability of the mutual contact between the busbar 42 and the electrode terminal 31, thereby improving the reliability of the electrical connection between the battery cells 30.

[0121] In some embodiments, the end plate 411 is provided with a guide groove 411b on the side facing the battery cell 30. The guide groove 411b is used to guide the engagement between the battery cell 30 and the end plate 411, and the clearance hole 411a is provided at the bottom of the guide groove 411b.

[0122] Specifically, the periphery of the guide groove 411b can be a closed structure or a semi-closed structure. For example, multiple spaced guide posts can surround a guide groove 411b that is adapted to the shape of the battery cell 30.

[0123] The guide groove 411b can be recessed in the direction towards the end plate 411 or protruding outward in the direction towards the battery cell 30. One guide groove 411b can be provided for each battery cell 30. During the installation of the battery cell 30 and the first connecting assembly 40, the guide groove 411b can guide the position of the battery cell 30 relative to the end plate 411, ensuring the relative position of the electrode terminals 31 of the battery cell 30 and the busbar 42 of the first connecting assembly 40, reducing the risk of misalignment and connection failure. In addition, the guide groove 411b can also limit the movement of the battery cell 30. During the use of the battery 10, the guide groove 411b can improve the structural strength of the battery 10 and reduce the risk of misalignment between the battery cells 30.

[0124] like Figures 5 to 11 As shown, in some embodiments, the battery 10 includes a first connecting assembly 40, a battery cell 30, and a second connecting assembly 50. The battery cell 30 has electrode terminals 31 at both ends along a first direction X. The first connecting assembly 40 includes a first clamping member 41 and a busbar 42. The first clamping member 41 includes an end plate 411 and a pin 412a connected to the end plate 411. The busbar 42 is embedded in the end plate 411 by injection molding to improve the connection reliability between the busbar 42 and the end plate 411. The busbar 42 includes a straight section 42a and a bent section 42b connecting the straight section 42a. The exposed portion 42d of the straight section 42a is electrically connected to the electrode terminals 31 of the battery cell 30. The bent section 42b bears the impact load when the battery 10 is subjected to impact, ensuring the connection reliability between the battery cell 30 and the busbar 42. The end plate 411 has guide grooves 411b facing the battery cell 30. The guide grooves 411b are arranged in an array along the second direction Y and the third direction Y to guide the battery cell 30. The bottom of the guide grooves 411b has a through-hole 411a. The second connecting assembly 50 includes a second clamping member 51 and a busbar 42. The second clamping member 51 includes a second end plate and a insertion hole 50a connected to the second end plate. The second end plate has a similar structure to the end plate 411. The battery cell 30 is clamped between the end plate 411 and the second end plate through the insertion hole 50a and the connection of the insertion pin 412a. The insertion pin 412a is located in the middle of the quadrilateral area formed by the four guide grooves 411b. The insertion hole 50a corresponds to the insertion pin 412a to improve the connection reliability of the first connecting assembly 40 and the second connecting assembly 50. Clips can be provided on the insertion pin 412a or the insertion hole 50a to reduce the risk of detachment after connection.

[0125] The electrical device provided according to the embodiments of this application includes the battery 10 provided in any of the above embodiments.

[0126] The power supply device provided in this application embodiment has the same technical effect as the battery 10 provided in any of the above embodiments, and will not be described again here.

[0127] like Figure 12 A flowchart illustrating a battery manufacturing method provided in an embodiment of this application is shown.

[0128] like Figure 12 As shown, the battery manufacturing method provided according to the embodiments of this application includes:

[0129] S10. Provide a battery cell 30, which includes electrode terminals 31.

[0130] S20. A first connection component 40 is provided, the first connection component 40 including a first clamping member 41 and a busbar 42, the busbar 42 being connected to the first clamping member 41.

[0131] S30, Provide a second connection component 50.

[0132] S40, assembling battery cells 30, first connecting assembly 40 and second connecting assembly 50, wherein the second connecting assembly 50 is connected to the first clamping member 41, and multiple battery cells 30 are clamped between the first clamping member 41 and the second connecting assembly 50, so that the busbar 42 and the electrode terminals 31 of the multiple battery cells 30 abut against each other and are electrically connected along the first direction X.

[0133] The battery manufacturing method provided in this application embodiment achieves electrical connection of the battery cells 30 by clamping the battery cells 30 between the first clamping member 41 and the second connecting component 50, thereby connecting the electrode terminals 31 of the battery cells 30 to the busbar 42. Therefore, it is only necessary to connect the first clamping member 41 and the second connecting component 50 to achieve electrical connection between the battery cells 30. The connection method is simple and efficient, and can effectively improve the production efficiency of the battery 10.

[0134] like Figure 13 A schematic diagram of the structure of a battery manufacturing system provided in an embodiment of this application is shown.

[0135] like Figure 13 As shown, the battery manufacturing system 100 provided according to an embodiment of this application includes: a first providing module 110, a second providing module 120, a third providing module 130, and an assembly module 140. The first providing module 110 provides a battery cell 30, which includes electrode terminals 31. The second providing module 120 provides a first connecting assembly 40, which includes a first clamping member 41 and a busbar 42 connected to the first clamping member 41. The third providing module 130 provides a second connecting assembly 50. The assembly module 140 assembles the battery cell 30, the first connecting assembly 40, and the second connecting assembly 50, wherein the second connecting assembly 50 is connected to the first clamping member 41, and multiple battery cells 30 are clamped between the first clamping member 41 and the second connecting assembly 50, such that the busbar 42 abuts against and is electrically connected to the electrode terminals 31 of the multiple battery cells 30 along a first direction X. Although this application has been described with reference to preferred embodiments, various modifications can be made thereto and components can be replaced with equivalents without departing from the scope of this application. In particular, the technical features mentioned in the various embodiments can be combined in any manner, provided there is no structural conflict. This application is not limited to the specific embodiments disclosed herein, but includes all technical solutions falling within the scope of the claims.

Claims

1. A battery (10), characterized in that, include: A single battery cell (30) includes electrode terminals (31); A first connecting component (40) includes a first clamping member (41) and a busbar (42), wherein the busbar (42) is connected to the first clamping member (41); the busbar (42) includes an embedded portion (42c) and an exposed portion (42d), wherein the embedded portion (42c) is embedded in the first clamping member (41), and the exposed portion (42d) is exposed outside the first clamping member (41); A second connecting assembly (50) is connected to the first clamping member (41), and a plurality of battery cells (30) are clamped between the first clamping member (41) and the second connecting assembly (50) so that the exposed portion (42d) abuts against and is electrically connected to the electrode terminals (31) of the plurality of battery cells (30) at least along a first direction (X).

2. The battery (10) according to claim 1, characterized in that, The electrode terminals (31) are disposed at both ends of the battery cell (30) along the first direction (X). The second connection assembly (50) includes a second clamping member (51) and the busbar (42). The second clamping member (51) is connected to the busbar (42). The second clamping member (51) is connected to the first clamping member (41). The busbar (42) connected to the first clamping member (41) and the busbar (42) connected to the second clamping member (51) respectively abut against and electrically connect to the electrode terminals (31) at both ends of the battery cell (30) along the first direction (X).

3. The battery (10) according to claim 1, characterized in that, The battery cell (30) further includes a housing (32), and the electrode terminal (31) is disposed at one end of the housing (32) along the first direction (X). The housing (32) includes a bottom shell (321) disposed opposite to the electrode terminal (31) along the first direction (X). The second connection assembly (50) includes a third clamping member and a busbar member, the busbar member being connected to the third clamping member and the third clamping member being connected to the first clamping member (41). A plurality of battery cells (30) are clamped between the first clamping member (41) and the third clamping member, so that the busbar member abuts against and is electrically connected to the bottom shell (321) of the plurality of battery cells (30).

4. The battery (10) according to claim 1, characterized in that, The manifold (42) has a straight section (42a) and a curved section (42b), the curved section (42b) connecting adjacent straight sections (42a), and the curved section (42b) protruding along the first direction (X).

5. The battery (10) according to claim 1, characterized in that, The battery (10) also includes a circuit board (60), at least a portion of the busbar (42) being electrically connected to the circuit board (60).

6. The battery (10) according to claim 1, characterized in that, The first clamping member (41) includes an injection-molded part (41a), and the manifold (42) includes an embedded part (42c) and an exposed part (42d). The embedded part (42c) is embedded in the injection-molded part (41a), and the exposed part (42d) is exposed to the outside of the first clamping member (41).

7. The battery (10) according to any one of claims 1 to 6, characterized in that, The first clamping member (41) includes an end plate (411) and a connecting part (412). The end plate (411) is disposed at one end of the battery cell (30) along the first direction (X) and is used to connect with the busbar (42). The connecting part (412) is connected to the end plate (411) and is used to connect with the second connecting assembly (50). The end plate (411) has a clearance hole (411a) that extends through along the first direction (X) for the electrode terminal (31) to pass through.

8. The battery (10) according to claim 7, characterized in that, One of the connecting part (412) and the second connecting assembly (50) has a pin (412a), and the other has a plug hole (50a) that is plugged into the pin so that the battery cell (30) is clamped between the first clamping member (41) and the second connecting assembly (50).

9. The battery (10) according to claim 7, characterized in that, The battery cell (30) is cylindrical, and the first clamping member (41) includes a plurality of the connecting portions (412), with the connecting portions (412) provided between at least some of the battery cells (30).

10. The battery (10) according to claim 8, characterized in that, Multiple battery cells (30) are arranged in an array along a second direction (Y) and a third direction (Z), the second direction (Y) intersecting the third direction (Z) and being perpendicular to the first direction (X); Two adjacent rows of battery cells (30) along the second direction (Y) and two adjacent columns along the third direction (Z) form a quadrilateral unit. Each quadrilateral unit has a connecting part (412) inside and around its periphery. The connecting part (412) is staggered from the battery cells (30) along the second direction (Y) and the third direction (Z).

11. The battery (10) according to claim 7, characterized in that, The end plate (411) has a guide groove (411b) on the side facing the battery cell (30). The guide groove (411b) is used to guide the battery cell (30) to cooperate with the end plate (411). The clearance hole (411a) is provided at the bottom of the guide groove (411b).

12. An electrical appliance, characterized in that, Includes a battery (10) as described in any one of claims 1 to 11, the battery (10) being used to provide electrical energy.

13. A method for manufacturing a battery, characterized in that, include: A battery cell (30) is provided, the battery cell (30) including electrode terminals (31); A first connecting component (40) is provided, the first connecting component (40) including a first clamping member (41) and a busbar (42), the busbar (42) being connected to the first clamping member (41); the busbar (42) including an embedded portion (42c) and an exposed portion (42d), the embedded portion (42c) being embedded in the first clamping member (41), and the exposed portion (42d) being exposed to the outside of the first clamping member (41); Provide a second connection component (50); Assemble the battery cell (30), the first connecting assembly (40), and the second connecting assembly (50), wherein the second connecting assembly (50) is connected to the first clamping member (41), and a plurality of battery cells (30) are clamped between the first clamping member (41) and the second connecting assembly (50) so that the exposed portion (42d) abuts against and is electrically connected to the electrode terminals (31) of the plurality of battery cells (30) along a first direction (X).

14. A battery manufacturing system, characterized in that, include: A first providing module is used to provide a battery cell (30), the battery cell (30) including electrode terminals (31); A second providing module is used to provide a first connecting component (40), the first connecting component (40) including a first clamping member (41) and a busbar (42), the busbar (42) being connected to the first clamping member (41); the busbar (42) including an embedded part (42c) and an exposed part (42d), the embedded part (42c) being embedded in the first clamping member (41), and the exposed part (42d) being exposed to the outside of the first clamping member (41); A third providing module is used to provide the second connecting component (50); An assembly module is used to assemble the battery cell (30), the first connecting component (40), and the second connecting component (50), wherein the second connecting component (50) is connected to the first clamping member (41), and a plurality of battery cells (30) are clamped between the first clamping member (41) and the second connecting component (50) so that the exposed portion (42d) abuts against and is electrically connected to the electrode terminals (31) of the plurality of battery cells (30) along a first direction (X).

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