CN116706409A - Battery, its manufacturing method and manufacturing system, and electrical device - Google Patents

Abstract

The present application provides a battery, a manufacturing method, a manufacturing system, and an electrical device. The battery includes battery cells, a first connection assembly and a second connection assembly. The battery cell includes an electrode terminal, and the first connection assembly includes a first clip and a busbar, and the busbar is connected to the first clip. The second connection component is connected to the first clamping part, and a plurality of battery cells are sandwiched between the first clamping part and the second connection component, so that the bus part and the electrode terminals of the multiple battery cells are at least along the first The directions are offset and electrically connected. For the battery provided in the present application, the assembly operation of the battery is simpler and more efficient. Moreover, the battery has a stronger overall structural strength, which is beneficial to improving the impact resistance of the battery.

Description

Battery, its manufacturing method and manufacturing system, and electrical device

technical field

The present application relates to the field of battery technology, in particular to a battery, a manufacturing method, a manufacturing system, and an electrical device.

Background technique

Batteries are widely used in electronic equipment, such as mobile phones, laptop computers, battery cars, electric cars, electric airplanes, electric ships, electric toy cars, electric toy ships, electric toy airplanes and electric tools, etc.

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

Contents of the invention

Embodiments of the present application provide a battery, a manufacturing method thereof, a manufacturing system, and an electrical device, which can improve the production efficiency of the battery while ensuring the reliability of the battery.

In the first aspect, the embodiment of the present application provides a battery, including a battery cell, a first connection assembly, and a second connection assembly; the battery cell includes an electrode terminal; the first connection assembly includes a first clip and a bus, and the bus The piece is connected to the first clamping piece; the second connection assembly is connected to the first clamping piece, and a plurality of battery cells are sandwiched between the first clamping piece and the second connection assembly, so that the busbar and the plurality of batteries The electrode terminals of the monomers are at least abutted against and electrically connected along the first direction.

The battery provided in the embodiment of the present application is provided with a first connection assembly and a second connection assembly, and the first connection assembly includes a first clip and a busbar, and the busbar is connected to the first clip. By connecting the first clip The member is connected to the second connection assembly, so that a plurality of battery cells are sandwiched between the first clamping member and the second connection assembly, and the bus member is abutted and electrically connected to the electrode terminals of the battery cells, thereby realizing The electrical connection between multiple battery cells is set up in this way, and the electrical connection between multiple battery cells can be realized only by connecting the first clamping member with the second connection component, and the battery assembly operation is simpler and more efficient . Moreover, the battery formed by connecting the first connection component and the second connection component has a stronger overall structural strength, which is beneficial to improving the impact resistance of the battery.

In some embodiments, the electrode terminals are arranged at both ends of the battery cell along the first direction, the second connection assembly includes a second clamping piece and a busbar, the second clamping piece is connected to the busbar, and the second clamping piece Connected to the first clip, the bus connected to the first clip and the bus connected to the second clip are respectively abutted against and 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, through the connection between the first clamping part and the second clamping part, the electrical connection between the electrode terminals at both ends of the multiple battery cells and the busbar can be realized, thereby realizing multiple The electrical connection of each battery cell, in this way, can further improve the production efficiency of the battery.

In some embodiments, the battery cell further includes a casing, the electrode terminal is disposed at one end of the casing along the first direction, and the casing includes a bottom case disposed opposite to the electrode terminal along the first direction; the second connection assembly includes a third The clamping piece and the confluence member, the confluence component is connected to the third clamping piece, the third clamping piece is connected to the first clamping piece, and a plurality of battery cells are sandwiched between the first clamping piece and the third clamping piece space, so that the confluence member is abutted against and electrically connected to the bottom cases of the plurality of battery cells. With such an arrangement, simple and efficient electrical connection between the battery cells can still be realized for the battery cells charged in the case, and the production efficiency of the battery can be further improved.

In some embodiments, the busbar has a straight section and a curved section, the curved section connects adjacent straight sections, and the curved section protrudes along the first direction. In this way, the vibration or impact of the battery cells can be absorbed through the deformation of the bending section, thereby buffering the impact or vibration load on the busbar and reducing the risk of fracture of the busbar due to vibration.

In some embodiments, the battery further includes a circuit board to which at least some of the bus members are electrically connected. By setting up the circuit board, information such as the temperature and voltage of the confluence can be collected to obtain the working status of the battery in real time, and make corresponding adjustments in time to ensure the normal operation of the battery.

In some embodiments, the first clamping part includes an injection molding part, the busbar includes an embedded part and an exposed part, the embedded part is embedded in the injection molding part, and the exposed part is exposed outside the first clamping part. In this way, the connection strength between the busbar and the first clamping part is higher, and the position accuracy of the busbar is higher, which facilitates the electrical connection between the busbar and the electrode terminal.

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 the first direction, and is used for connecting with the bus member, and the connecting portion is connected with the end plate, and is used for connecting with the second The two connection components are connected; the end plate has an avoidance hole arranged through the first direction, and the avoidance hole is used for passing through the electrode terminal. In this way, the battery cell and the first clamping member have better fit, which provides connection stability between the first connection component and the ground pool cell.

In some embodiments, one of the connection part and the second connection component has pins, and the other one has insertion holes, and the insertion holes are plugged and connected with the insertion pins so that the battery cells are clamped Between the first clamping piece and the second connecting component. Through the connection between the pins and the socket holes, the connection method is simple and efficient, and the production efficiency of the battery cells can be further improved.

In some embodiments, the battery cells are cylindrical, and the first clamping member includes a plurality of connection portions, and at least some of the battery cells are provided with connection portions. In this way, the reliability of contact between the electrode terminal of the battery cell and the busbar can be improved, and the reliability of the electrical connection between the battery cells can be further improved.

In some embodiments, a plurality of battery cells are arranged in an array along the second direction and the third direction, the second direction intersects the third direction and is respectively perpendicular to the first direction; two adjacent rows along the second direction, And two adjacent rows of battery cells along the third direction form a quadrilateral unit, each quadrilateral unit is provided with a connection part inside and around the side, and the connection part is dislocated from the battery cells along the second direction and the third direction. Such an arrangement can further improve the reliability of the contact between the bus member and the electrode terminal, and further improve the reliability of the electrical connection between the battery cells.

In some embodiments, a guide groove is provided on the side of the end plate facing the battery cell, and the guide groove is used to guide the cooperation between the battery cell and the end plate, and the escape 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, so as to ensure the relative position of the electrode terminal of the battery cell and the bus member of the first connection assembly, and reduce the risk of connection failure caused by misalignment between the two. In addition, the guide grooves can increase the structural strength of the battery and reduce the risk of misalignment between battery cells.

In a second aspect, an embodiment of the present application provides an electrical device, including the battery provided in the above embodiment, and the battery is used to provide electrical energy.

In a third aspect, an embodiment of the present application provides a battery manufacturing method, including: providing a battery cell, the battery cell includes an electrode terminal; providing a first connection assembly, the first connection assembly includes a first clip and a bus, The busbar is connected to the first clip; a second connection assembly is provided; the battery cell, the first connection assembly and the second connection assembly are assembled, wherein the second connection assembly is connected to the first clip, and a plurality of battery cells Interposed between the first clip and the second connection component, the busbar abuts against and electrically connects the electrode terminals of the plurality of battery cells along the first direction.

In a fourth aspect, an embodiment of the present application provides a battery manufacturing system, including: a first providing module for providing battery cells, the battery cells including electrode terminals; a second providing module for providing the first connection assembly, The first connection assembly includes a first clamping piece and a confluence piece, the confluence piece is connected to the first clamping piece; the third providing module is used to provide the second connection assembly; the assembly module is used for assembling the battery cells, the first connection assembly and a second connection assembly, wherein the second connection assembly is connected to the first clip, and a plurality of battery cells are sandwiched between the first clip and the second connection assembly, so that the bus and the plurality of batteries The electrode terminals of the monomers are opposed and electrically connected along the first direction.

Description of drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present application, the following will briefly introduce the accompanying drawings that need to be used in the embodiments of the present application. Obviously, the accompanying drawings described below are only some embodiments of the present application. Those of ordinary skill in the art can also obtain other drawings based on the accompanying drawings on the premise of not paying creative efforts.

Fig. 1 is a schematic structural diagram of a vehicle provided by an embodiment of the present application;

Fig. 2 is a schematic structural diagram of a battery provided in an embodiment of the present application;

Fig. 3 is a schematic structural diagram of a battery module in a battery provided by an embodiment of the present application;

Fig. 4 is a schematic structural diagram of a battery cell in a battery provided in an embodiment of the present application;

Fig. 5 is a schematic structural diagram of another battery provided in the embodiment of the present application;

Fig. 6 is a schematic diagram of the explosive structure of the battery used in the embodiment of the present application;

Fig. 7 is a schematic structural diagram of the second connection assembly in the battery provided by the embodiment of the present application;

Fig. 8 is a front view of the battery provided by the embodiment of the present application;

Fig. 9 is a schematic cross-sectional structure diagram along A-A of Fig. 8;

Fig. 10 is a schematic structural diagram of a first connection assembly in the battery provided by the embodiment of the present application;

Fig. 11 is a schematic structural diagram of another first connection assembly in the battery provided by the embodiment of the present application;

Fig. 12 is a flow chart of the battery manufacturing method provided by the embodiment of the present application;

Fig. 13 is a schematic structural diagram of a battery manufacturing system provided by an embodiment of the present application.

In the drawings, the drawings are not necessarily drawn to scale.

Mark Description:

1. Vehicle; 1a, motor; 1b, controller;

10. Battery; 11. First box; 12. Second box;

20. Battery module;

30. Battery cell; 31. Electrode terminal; 32. Housing; 321. Bottom case;

40. First connection assembly; 41. First clamping member; 41a. Injection molding part; 411. End plate; 411a. Avoidance hole; 411b. Guide groove; 412. Connecting part; ; 42a, straight section; 42b, curved section; 42c, embedded part; 42d, exposed part;

50. The second connection assembly; 50a, the insertion hole; 51. The second clamping piece;

60, circuit board; 60a, electric connection part;

100. Manufacturing system; 110. First providing module; 120. Second providing module; 130. Third providing module; 140. Assembly module;

X, the first direction; Y, the second direction; Z, the third direction.

Detailed ways

The implementation manner of the present application will be further described in detail below with reference to the drawings and embodiments. The detailed description and drawings of the following embodiments are used to illustrate the principles of the application, but not to limit the scope of the application, that is, the application is not limited to the described embodiments.

In the description of this application, it should be noted that, unless otherwise specified, the meaning of "plurality" is more than two; the terms "upper", "lower", "left", "right", "inner", " The orientation or positional relationship indicated by "outside" and so on are only for the convenience of describing the present application and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a reference to this application. Application Restrictions. In addition, 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 strictly vertical, but within the allowable range of error. "Parallel" is not strictly parallel, but within the allowable range of error.

Reference in this application to an "embodiment" means that a particular feature, structure, or characteristic described in connection with the embodiment can be included in at least one embodiment of the present application. The occurrences of this phrase in various places in the specification are not necessarily all referring to the same embodiment, nor are separate or alternative embodiments mutually exclusive of other embodiments. It is understood explicitly and implicitly by those skilled in the art that the embodiments described in this application can be combined with other embodiments.

In the description of this application, it should also be noted that, unless otherwise clearly specified and limited, the terms "installation", "connection", and "connection" should be interpreted in a broad sense, for example, it can be a fixed connection or a flexible connection. Disassembled connection, or integral connection; it can be directly connected or indirectly connected through an intermediary. For those of ordinary skill in the art, the specific meanings of the above terms in this application can be understood according to specific situations.

In this application, the battery cells may include lithium-ion secondary battery cells, lithium-ion primary battery cells, lithium-sulfur battery cells, sodium-lithium-ion battery cells, sodium-ion battery cells, or magnesium-ion battery cells, etc. The embodiment of the present application does not limit this. The battery cell can be in the form of a cylinder, a flat body, a cuboid or other shapes, which is not limited in this embodiment of the present application. Battery cells are generally divided into three types according to packaging methods: cylindrical battery cells, square square battery cells and pouch battery cells, which are not limited in this embodiment of the present application.

The battery mentioned in the embodiments of the present application refers to a single physical module including 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, and the like. Batteries generally include a case for enclosing one or more battery cells. The box can prevent liquid or other foreign objects from affecting the charging or discharging of the battery cells.

The battery cell includes an electrode assembly and an electrolyte, and the electrode assembly is composed of a positive electrode sheet, a negative electrode sheet, and a separator. A battery cell works primarily by moving metal ions between the positive and negative plates. The positive electrode sheet includes a positive electrode current collector and a positive electrode active material layer. The positive electrode active material layer is coated on the surface of the positive electrode current collector. The current collector not coated with the positive electrode active material layer protrudes from the current collector coated with the positive electrode active material layer. The current collector coated with the positive electrode active material layer is stacked as the positive electrode tab. Taking a lithium-ion battery as an example, the material of the positive electrode current collector can be aluminum, and the positive electrode active material can be lithium cobaltate, lithium iron phosphate, ternary lithium or lithium manganate. The negative electrode sheet includes a negative electrode current collector and a negative electrode active material layer. The negative electrode active material layer is coated on the surface of the negative electrode current collector. The current collector without the negative electrode active material layer protrudes from the current collector coated with the negative electrode active material layer. The current collector coated with the negative electrode active material layer is stacked as the negative electrode tab. The material of the negative electrode current collector may be copper, and the negative electrode active material may be carbon or silicon. The material of the diaphragm can be PP or PE, etc. In addition, the electrode assembly may be a wound structure or a laminated structure, which is not limited in the embodiment of the present application.

After the inventor discovered the problem of low production efficiency of the battery, he conducted a systematic analysis and research on the production process of the battery and the structure of the battery. The electrode terminals of the cells are electrically connected to realize the series or parallel connection between the battery cells. Usually, the busbar is electrically connected to the electrode terminal by welding. However, the battery includes multiple battery cells, and it is necessary to weld and connect the electrode terminal of each battery cell to the busbar. This operation takes a lot of time and is serious. Affect the production efficiency of the battery.

Based on the above problems discovered by the inventors, the inventors have improved the structure of the battery, and the technical solutions described in the embodiments of the present application are applicable to the battery, its manufacturing method and manufacturing system, and electric devices including the battery.

A battery provided according to an embodiment of the present application includes a battery cell, a first connecting component and a second connecting component. The battery cell includes an electrode terminal, and the first connection assembly includes a first clip and a busbar, and the busbar is connected to the first clip. The second connecting component is connected to the first clamping part, and a plurality of battery cells are sandwiched between the first clamping part and the second connecting component, so that the bus part and the electrode terminals of the multiple battery cells are aligned in the first direction offset and electrically connected.

According to the battery provided by the embodiment of the present application, the busbar is set to be connected to the first connection component, and the busbar and the electrode terminal are connected and electrically connected through the connection between the first connection component and the second connection component. Therefore, in the production process of the battery Only need to realize the connection between the first connection component and the second connection component, the electrical connection between multiple battery cells and the busbar can be realized, and the operation is simple and efficient.

Electric devices can be vehicles, mobile phones, portable devices, notebook computers, ships, spacecraft, electric toys and electric tools, and so on. Vehicles can be fuel vehicles, gas vehicles or new energy vehicles, and new energy vehicles can be pure electric vehicles, hybrid vehicles or extended-range vehicles; spacecraft include airplanes, rockets, space shuttles and spacecraft, etc.; electric toys include fixed Type or mobile electric toys, such as game consoles, electric car toys, electric boat toys and electric airplane toys, etc.; electric tools include metal cutting electric tools, grinding electric tools, assembly electric tools and railway electric tools, for example, Electric drills, electric grinders, electric wrenches, electric screwdrivers, electric hammers, impact drills, concrete vibrators, electric planers, and more. The embodiment of the present application does not impose special limitations on the above electric equipment.

In the following embodiments, for the convenience of description, the electric device is taken as an example for description.

As shown in FIG. 1 , a battery 10 is provided inside a vehicle 1 . The battery 10 can be arranged at the bottom or the head or the rear of the vehicle 1 . The battery 10 can be used for power supply of the vehicle 1 , for example, the battery 10 can be used as an operating power source of the vehicle 1 .

The vehicle 1 may also include a controller 1b and a motor 1a. The controller 1b is used to control the battery 10 to supply power to the motor 1a, for example, for starting, navigating and driving the vehicle 1's work electricity demand.

In some embodiments of the present application, the battery 10 can not only be used as an operating power source for the vehicle 1 , but can also be used as a driving power source for the vehicle 1 to provide driving power for the vehicle 1 instead of or partially replacing fuel oil or natural gas.

Referring to FIG. 2 , the battery 10 includes battery cells (not shown in FIG. 2 ). The battery 10 may also include a case for accommodating the battery cells.

The box body is used to accommodate the battery cells, and the box body can be in various structural forms.

In some embodiments, the box may include a first box 11 and a second box 12 . The first box body 11 and the second box body 12 cover each other. The first box body 11 and the second box body 12 jointly define an accommodating space for accommodating the battery cells 30 . The first box body 11 and the second box body 12 may be hollow structures with one side opening. The opening side of the first box body 11 covers the opening side of the second box body 12 to form a box body with a receiving space. A sealing member may also be provided between the first box body 11 and the second box body 12 to realize the sealed connection between the first box body 11 and the second box body 12 .

In practice, the first box body 11 can cover the top of the second box body 12 . The first casing 11 can also be referred to as an upper casing, and the second casing 12 can also be referred to as a lower casing.

The first box body 11 and the second box body 12 can be in various shapes, for example, a cylinder, a cuboid, and the like. In FIG. 2 , for example, both the first box body 11 and the second box body 12 are rectangular parallelepiped.

In the battery 10, there may be one or a plurality of battery cells. If there are multiple battery cells, the multiple battery cells can be connected in series, in parallel or in parallel. Mixed connection means that multiple battery cells are connected in series and in parallel. Multiple battery cells can be directly connected in series or parallel or mixed together, and then the whole composed of multiple battery cells can be accommodated in the box, or multiple battery cells can be connected in series, parallel or mixed to form a battery Module 20. A plurality of battery modules 20 are connected in series, in parallel or in parallel to form a whole and accommodated in the box.

In some embodiments, as shown in FIG. 3 , in the battery module 20 , there are multiple battery cells 30 . A plurality of battery cells 30 are connected in series, in parallel or in parallel to form the battery module 20 . A plurality of battery modules 20 are connected in series, in parallel or in parallel to form a whole and accommodated in the box.

In some embodiments, the plurality of battery cells 30 in the battery module 20 can be electrically connected through the busbar 42 , so as to realize parallel connection, series connection or mixed connection of the plurality of battery cells 30 in the battery module 20 .

FIG. 4 shows a schematic structural diagram of a battery cell in the battery provided by the embodiment of the present application, FIG. 5 shows a schematic structural diagram of the battery provided by the embodiment of the present application, and FIG. 6 is a schematic diagram of an exploded structure of FIG. 5 .

As shown in FIGS. 4 to 6 , the battery 10 provided according to the embodiment of the present application includes a battery cell 30 , a first connection assembly 40 and a second connection assembly 50 , and the battery cell 30 includes an electrode terminal 31 . The first connection assembly 40 includes a first clamping part 41 and a busbar 42 , and the busbar 42 is connected to the first clamping part 41 . The second connection assembly 50 is connected to the first clamping part 41, and a plurality of battery cells 30 are sandwiched between the first clamping part 41 and the second connection assembly 50, so that the busbar 42 and the plurality of battery cells The electrode terminals 31 of the electrode 30 abut and are electrically connected at least along the first direction X.

Specifically, the confluence member 42 and the first clamping member 41 may be detachably connected, such as threaded or clamped, and the two may also be non-detachably connected, such as riveted, welded or integrally formed.

The part where the first clamping part 41 is connected to the bus part 42 can be made of insulating materials such as plastic and rubber, and the materials of other parts can be set according to specific requirements.

The connection between the second connection assembly 50 and the first clamping piece 41 can be clamping, welding, threaded connection or riveting, etc., as long as the second connection assembly 50 and the first clamping piece 41 are connected, multiple battery cells can be connected. The body 30 is sandwiched between the two, and the bus member 42 is in contact with the electrode terminal 31 .

The connecting portion 412 of the second connection assembly 50 and the first clamping member 41 can be located on the peripheral side of the plurality of battery cells 30 , or in the area between the battery cells 30 , or on the side of the plurality of battery cells 30 . Connecting parts 412 are provided on the peripheral side and between the battery cells 30 .

The first direction X may be the relative position direction of the battery cell 30 and the first connection assembly 40 , or may intersect the relative position direction of the two. According to the specific shapes of the bus member 42 and the electrode terminal 31, the bus member 42 and the electrode terminal 31 may abut only along the first direction X, or may also abut along the first direction X and another direction intersecting the first direction X at the same time. . For example, the contact surface of the bus member 42 and the electrode terminal 31 is "U"-shaped, and the two have contact on three surfaces in the "U"-shaped groove.

The battery cell 30 can be a cylindrical battery cell or a square battery cell, and the specific structure and shape of the busbar 42 can be set according to the specific structure of the battery cell 30 and the positional relationship between the electrode terminals 31, so as to The electrical connection between the bus member 42 and the electrode terminals 31 of different battery cells 30 is realized. Since the arrangement relationship between different battery cells 30 and the positional relationship between electrode assemblies are not the same, the structures of different bus members 42 can also be different, as long as the connection between the electrode terminals 31 of different battery cells 30 can be achieved. The electrical connection is enough.

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 .

In the embodiment where the electrode terminals 31 are only disposed at one end of the battery cells 30 , only the first connecting component 40 may include the busbar 42 to realize the electrical connection between the battery cells 30 . It is also possible to configure the second connection assembly 50 to include the busbar 42 at the same time, so as to realize the electrical connection between the battery cells 30 . For example, for a cylindrical battery cell provided with an electrode terminal 31 at one end, both the first connection assembly 40 and the second connection assembly 50 include a busbar 42, and the busbar 42 of the first connection assembly 40 is connected to the electrode terminal of the battery cell 30. 31, and the busbar 42 of the second connection assembly 50 can be electrically connected with the casing 32 of the battery cell 30, so that the electrical connection between the cylindrical battery cells of the single-electrode terminal 31 can also be realized.

However, in the embodiment in which both ends of the battery cell 30 are provided with electrode terminals 31, the second connection assembly 50 may also include the busbar 42, so that the busbar 42 of the first connection assembly 40 and the second connection The bus members 42 of the assembly 50 are respectively electrically connected to the electrode terminals 31 at both ends of the battery cells 30 , so as to realize the electrical connection between different battery cells 30 .

The battery 10 provided in the embodiment of the present application is provided with a first connection assembly 40 and a second connection assembly 50, and the first connection assembly 40 includes a first clip 41 and a busbar 42, and the busbar 42 and the first clip 41 connection, by connecting the first clip 41 and the second connection assembly 50, so that a plurality of battery cells 30 are interposed between the first clip 41 and the second connection assembly 50, and the bus 42 and the second connection assembly 50 The electrode terminals 31 of the battery cells 30 are abutted and electrically connected, so as to realize the electrical connection between the multiple battery cells 30 . In this way, it is only necessary to connect the first clamping member 41 to the second connection assembly 50 to realize The electrical connection between multiple battery cells 30 makes the assembly operation of the battery 10 simpler and more efficient. Moreover, the battery 10 formed by connecting the first connection component 40 and the second connection component 50 has a stronger overall structural strength, which is beneficial to improve the impact resistance of the battery 10 .

FIG. 7 shows a schematic structural diagram of the second connection assembly in the battery provided by the embodiment of the present application.

As shown in FIGS. 4 to 7 , in some embodiments, the electrode terminals 31 are disposed at both ends of the battery cell 30 along the first direction X, and the second connection assembly 50 includes a second clamping member 51 and a bus member 42 , The second clamping part 51 is connected with the bus part 42 . The second clamping piece is connected to the first clamping piece 41, and the busbar 42 connected to the first clamping piece 41 and the busbar 42 connected to the second clamping piece 51 are respectively connected to the battery cells 30 along the first direction X. The electrode terminals 31 at both ends are opposed and electrically connected.

The first clamping piece 41 is connected to the second clamping piece 51, so that a plurality of battery cells 30 are sandwiched between the first clamping piece 41 and the second clamping piece 51, and the battery cells 30 are arranged on both sides. The electrode terminals 31 at the end are respectively abutted and electrically connected with the bus pieces 42 to realize the connection between the first connection assembly 40 and the second connection assembly 50, and the first clamping piece 41 and the second clamping piece 51 can be clamped or threaded. , welding or riveting connections.

The structure of the busbar 42 connected to the first clip 41 and the busbar 42 connected to the second clip 51 may be the same or different, as long as the electrical connection between the busbar 42 and the electrode terminal 31 is realized.

The second connection assembly 50 is also provided with a busbar 42. For a battery cell 30 with electrode terminals 31 at both ends, through the connection of the first clamping piece 41 and the second clamping piece 51, multiple battery cells can be realized. The electrical connection between the electrode terminals 31 at both ends of the battery cell 30 and the bus member 42 can realize the electrical connection of multiple battery cells 30 , so that the production efficiency of the battery 10 can be further improved.

In some embodiments, the battery cell 30 includes a casing 32, the electrode terminal 31 is disposed at one end of the casing 32 along the first direction X, and the casing 32 includes a bottom case 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 confluence member, the confluence member is connected to the third clamping member, the third clamping member is connected to the first clamping member 41, and a plurality of battery cells 30 are clamped on the first clamping member 41. Between the clamping part 41 and the third clamping part, the flow-combining member is abutted against and electrically connected to the bottom shells 321 of the plurality of battery cells 30 .

Specifically, the battery cell 30 can be a cylindrical battery cell with an electrode terminal 31 at one end. At this time, the casing 32 of the battery cell 30 can be equivalent to one electrode terminal 31 of the battery cell 30. The electrical connection between 30 needs to be electrically connected between the shells 32 of the battery cells 30 and between the electrode terminals 31 of the electrode cells.

The part where the third clamping piece is connected to the confluence member can be made of insulating materials such as plastic and rubber.

The confluence member and the third clamping member may be clamped, screwed, riveted or integrally formed, as long as the electrical connection with the electrode assembly can be realized.

Through the connection between the third clamping part and the first clamping part 41, a plurality of battery cells 30 are clamped between the first clamping part 41 and the third clamping part, and the electrodes of the battery cells 30 The terminal 31 is abutted against and electrically connected to the busbar 42, and the bottom case 321 of the battery cell 30 is abutted and electrically connected to the busbar member, so as to realize the electrical connection between the battery cells 30. In this way, the electrical connection between the battery cells 30 The connection is simple and efficient, further improving the production efficiency of the battery 10 .

The busbar 42 can be in the shape of a straight sheet or a curved sheet, and of course, it can also be in the shape of a block, which is not limited here, as long as it can realize the electrical connection with the electrode assembly of the battery cell 30 .

FIG. 8 shows a front view of the battery provided by the embodiment of the present application, and FIG. 9 shows a schematic cross-sectional structure along A-A of FIG. 8 .

As shown in FIG. 8 and FIG. 9 , in some embodiments, the busbar 42 has a straight section 42a and a curved section 42b, the curved section 42b connects adjacent straight sections 42a, and the curved section 42b protrudes along the first direction X. .

It can be understood that during the use of the battery 10, the direction where the battery cells 30 intersect with the first direction X, such as between the battery cells 30, may be subjected to shock loads or vibration loads to generate certain vibrations or shaking. And transmit the load to the busbar 42, the busbar 42 is set to include a straight section 42a and a curved section 42b, and the vibration or impact of the battery cell 30 can be absorbed through the deformation of the bent section 42b, thereby buffering the shock or vibration borne by the busbar 42 load, reducing the risk of busbar 42 breaking due to vibration.

In some embodiments, the battery 10 further includes a circuit board 60 , and at least some of the busbars 42 are electrically connected to the circuit board 60 .

Specifically, it may be provided that the circuit board 60 has an outwardly protruding electrical connection portion 60a, and the electrical connection between the circuit board 60 and the busbar 42 is realized through the electrical connection portion 60a.

It can be understood that during the use of the battery 10, it is necessary to know the working conditions of the busbar 42 or the battery cell 30 in real time. By setting the circuit board 60 and connecting it to the busbar 42, the status of the busbar 42 can be collected. Temperature, voltage and other information to obtain the working status of the battery 10 in real time, and make corresponding adjustments in time to ensure the normal operation of the battery 10 .

Optionally, the circuit board 60 and the first clamping member 41 can be integrated together to save space and improve the integration of the battery 10 structure.

In some embodiments, the first clip 41 includes an injection molded part 41a, and the busbar 42 includes an embedded part 42c and an exposed part 42d. The embedded part 42c is embedded in the injection molding part 41a, and the exposed part 42d is exposed outside the first clamping part 41.

Specifically, the embedded part 42 c is used to realize the connection with the first clamping part 41 , and the exposed part 42 d can be used to realize the electrical connection between the bus part 42 and the electrode terminal 31 or the circuit board 60 .

Optionally, the first clamping part 41 can be integrally formed by injection molding, and the embedded part 42c of the busbar 42 is embedded into the first clamping part 41 during the injection molding process. The first clamping part 41 can also be partially injection molded, and in the process of injection molding, the embedded part 42c of the busbar 42 is embedded in the injection molding part 41a, and then the injection molding part 41a and the first clamping part 41 Other parts are connected.

It can be understood that the first clamping part 41 is set to include an injection molding part 41a, so that the confluence part 42 and the first clamping part 41 are integrally connected by injection molding, the connection strength is higher, and the confluence part 42 has a higher Position accuracy facilitates the electrical connection between the bus member 42 and the electrode terminal 31 .

FIG. 10 and FIG. 11 respectively show structural schematic diagrams of different first clamping pieces provided by the embodiments of the present application.

As shown in FIG. 10 and FIG. 11 , 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 communicate with The busbar 42 is connected, and the connecting portion 412 is connected to the end plate 411 and used for connecting with the second connecting component 50 . The end plate 411 has an avoidance hole 411a penetratingly provided along the first direction X, and the escape hole 411a is used for penetrating the electrode terminal 31 .

Specifically, the connection part 412 may be columnar, block or other shapes, and the shape and position of the connection part 412 are set according to the connection form of the first connection component 40 and the second connection component 50 .

The electrode terminal 31 of the battery cell 30 passes through the avoidance hole 411a of the end plate 411 to abut against the busbar 42, and the end cover connected with the electrode terminal 31 of the battery cell 30 can be arranged to be attached to the end plate 411 to improve the battery life. The stability of the connection between the monomer 30 and the first connection component 40 .

As shown in FIGS. 7 and 11 , in some embodiments, one of the connection part 412 and the second connection component 50 has a pin 412a, and the other has a plug hole 50a, and the plug hole 50a is connected to the plug hole 50a. The pins 412 a are plugged and connected so that the battery cell 30 is clamped between the first clamping member 41 and the second connecting component 50 .

Optionally, the insertion holes 50a and the pins 412a may be provided only on the outer peripheral sides of the plurality of battery cells 30 , or the insertion holes 50a and the pins 412a may be provided between adjacent battery cells 30 at the same time.

In order 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 card slot can be provided on the other, through the cooperation of the claw and the slot , realize the positioning of the pin 412a and the insertion hole 50a, further improve the connection strength between the pin 412a and the insertion hole 50a, and further improve the overall structural strength of the battery 10 .

It should be noted that, in the embodiment where the second connection assembly 50 includes the second clamping part 51 or the third clamping part, it can be set that the second clamping part 51 or the third clamping part includes a pin 412a or a socket The hole 50a is used to realize the connection between the first connecting component 40 and the second connecting component 50 .

It can be understood that the connection between the first connection component 40 and the second connection component 50 is realized through the connection between the pin 412a and the socket hole 50a, and then the electrical connection between the battery cells 30 is realized. This connection method is simple and convenient. High efficiency can further improve the production efficiency of the battery cell 30 .

In some embodiments, the battery cells 30 are cylindrical, and the first clamping member 41 includes a plurality of connection portions 412 , and at least some of the battery cells 30 are provided with the connection portions 412 .

Specifically, the battery cells 30 are cylindrical battery cells 30 . During the arrangement of the battery cells 30 , there will be gaps between some adjacent battery cells 30 . The connecting portion 412 can be arranged on the battery cells 30 In this way, the extra space inside the battery 10 occupied by the connecting portion 412 can be reduced, the structural integration inside the battery 10 can be further improved, and the volumetric energy density of the battery 10 can be increased.

In addition, providing a plurality of connection parts 412 and providing connection parts 412 between the battery cells 30 can improve the reliability of contact between the electrode terminals 31 of the battery cells 30 and the busbars 42, and further improve the connection between the battery cells 30. reliability of electrical connections.

Optionally, a connection portion 412 may be provided between some of the battery cells 30 , or a connection portion 412 may be provided on a peripheral side of each battery cell 30 .

In some embodiments, the plurality of battery cells 30 are arranged in an array along the second direction Y and the third direction Z, and the second direction Y intersects the third direction Z and is respectively perpendicular to the first direction X. Two adjacent rows along the second direction Y and two adjacent rows of battery cells 30 along the third direction Z form a quadrilateral unit, and a connection portion 412 is provided inside and around each quadrilateral unit, and the connection portion 412 Dislocation distribution with the battery cells 30 along the second direction Y and the third direction Z.

The quadrilateral is the connecting line of the centers of the four battery cells 30, and the four corners of each quadrilateral unit are provided with battery cells 30, and the two adjacent battery cells 30 along the second direction Y and the third direction Z can be Interval settings can also abut against each other.

The connection part 412 is arranged in a dislocation distribution with the battery cell 30 along the second direction Y and the third direction Z, that is, the line connecting the connection part 412 and the center of the battery cell 30 is not distributed along the second direction Y, nor along the second direction Y, nor along the second direction Y. Z distribution in three directions.

Optionally, the second direction Y may or may not be vertical. In the embodiment where the second direction Y is perpendicular to the third direction Z, the quadrilateral is a rectangle or a square. However, in the embodiment where the second direction Y is not perpendicular to the third direction Z, the quadrilateral is a parallelogram.

A connecting portion 412 is provided inside and around each quadrilateral unit, so that each battery cell 30 has a connecting portion 412 on the surrounding side, so that the corresponding electrode terminals 31 of the battery cell 30 are electrically connected to each other. The connection portion 412 is also provided on the peripheral side of the bus member 42 , which can further improve the reliability of the contact between the bus member 42 and the electrode terminal 31 , and further improve the reliability of the electrical connection between the battery cells 30 .

In some embodiments, the side of the end plate 411 facing the battery cell 30 is provided with a guide groove 411b, the guide groove 411b is used to guide the cooperation between the battery cell 30 and the end plate 411, and the escape hole 411a is provided at the bottom of the guide groove 411b .

Specifically, the surrounding side of the guide groove 411b may be a closed structure or a semi-closed structure, for example, a plurality of spaced apart guide posts enclose a guide groove that matches the shape of the battery cell 30 411b.

The guide groove 411 b can be concavely arranged in a direction toward the end plate 411 , or can be convexly arranged in a direction toward the battery cell 30 . A battery cell 30 can be provided corresponding to a guide groove 411b. During the installation process of the battery cell 30 and the first connection assembly 40, the guide groove 411b can guide the position of the battery cell 30 relative to the end plate 411, so as to ensure that the battery cell The relative position of the electrode terminal 31 of 30 and the bus member 42 of the first connecting component 40 reduces the risk of connection failure caused by misalignment between the two. In addition, the guide groove 411b can also limit the position of the battery cells 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. .

As shown in FIGS. 5 to 11 , in some embodiments, the battery 10 includes a first connection assembly 40 , a battery cell 30 and a second connection assembly 50 , and both ends of the battery cell 30 along the first direction X are provided with Electrode terminal 31. The first connection assembly 40 includes a first clamping piece 41 and a busbar 42. The first clamping piece 41 includes an end plate 411 and a pin 412a connected to the end plate 411. The busbar 42 and the end plate 411 are formed by injection molding. Embedded in the end plate 411 to improve connection reliability between the busbar 42 and the end plate 411 . The busbar 42 includes a straight section 42a and a curved section 42b connected between the straight sections 42a, the exposed part 42d of the straight section 42a is electrically connected to the electrode terminal 31 of the battery cell 30, and the curved section 42b is When the battery 10 is impacted, it bears the impact load, so as to ensure the reliability of the connection between the battery cells 30 and the busbar 42 . The end plate 411 has a guide groove 411b disposed toward the battery cell 30. The guide groove 411b is arranged in an array along the second direction Y and the third direction Y to provide guidance for the battery cell 30. The bottom of the guide groove 411b has a penetrating Avoidance hole 411a. The second connection assembly 50 includes a second clamping member 51 and a confluence member 42, the second clamping member 51 includes a second end plate and an insertion hole 50a connected to the second end plate, the second end plate and the end plate 411 The structure is similar. The battery cell 30 is interposed between the end plate 411 and the second end plate through the connection of the insertion hole 50a and the pin 412a. The pin 412a is disposed in the middle of the quadrangular area formed by the four guide grooves 411b, and the insertion hole 50a is correspondingly set to the pin 412a, so as to improve the connection reliability of the first connection component 40 and the second connection component 50. Buckles can be provided on the pin 412a or the insertion hole 50a to reduce the risk of falling off after the two are connected.

The electrical device provided according to the embodiments of the present application includes the battery 10 provided in any one of the above embodiments.

The electric device provided by the embodiment of the present application has the same technical effect because it includes the battery 10 provided by any one of the above embodiments, so it will not be repeated here.

FIG. 12 shows a flow chart of the battery manufacturing method provided by the embodiment of the present application.

As shown in Figure 12, the manufacturing method of the battery provided according to the embodiment of the present application includes:

S10 , providing a battery cell 30 , where the battery cell 30 includes an electrode terminal 31 .

S20 , providing a first connection assembly 40 , the first connection assembly 40 includes a first clip 41 and a busbar 42 , and the busbar 42 is connected to the first clip 41 .

S30, providing a second connection component 50.

S40. Assemble the battery cells 30, the first connection assembly 40 and the second connection assembly 50, wherein the second connection assembly 50 is connected to the first clamping part 41, and a plurality of battery cells 30 are clamped on the first clamping part 41 and the second connection assembly 50, so that the bus member 42 and the electrode terminals 31 of the plurality of battery cells 30 are abutted and electrically connected along the first direction X.

In the battery manufacturing method provided in the embodiment of the present application, the electrode terminal 31 of the battery cell 30 is connected to the bus member 42 by sandwiching the battery cell 30 between the first clamping member 41 and the second connection assembly 50 , and then realize the electrical connection of the battery cells 30, so only the first clamping member 41 and the second connection assembly 50 need to be connected to realize the electrical connection between the battery cells 30, the connection method is simple, efficient, and can be effectively The production efficiency of the battery 10 is greatly improved.

FIG. 13 shows a schematic structural diagram of a battery manufacturing system provided by an embodiment of the present application.

As shown in FIG. 13 , the battery manufacturing system 100 provided according to the embodiment of the present application includes: a first providing module 110 , a second providing module 120 , a third providing module 130 and an assembly module 140 . The first supply module 110 is used to provide the battery cell 30 including the electrode terminal 31 . The second providing module 120 is used for providing the first connection assembly 40 , the first connection assembly 40 includes a first clip 41 and a busbar 42 , and the busbar 42 is connected to the first clip 41 . The third providing module 130 is used for providing the second connection component 50 . The assembly module 140 is used to assemble the battery cells 30, the first connection assembly 40 and the second connection assembly 50, wherein the second connection assembly 50 is connected to the first clamping member 41, and a plurality of battery cells 30 are clamped on the first between the clamping member 41 and the second connecting component 50 , so that the bus member 42 and the electrode terminals 31 of the plurality of battery cells 30 are abutted and electrically connected along the first direction X. While the present application has been described with reference to a preferred embodiment, various modifications may be made thereto and equivalents may be substituted for parts thereof without departing from the scope of the present application, in particular, as long as there are no structural conflicts , the technical features mentioned in each embodiment can be combined in any way. The present application is not limited to the specific embodiments disclosed herein, but includes all technical solutions falling within the scope of the claims.

Claims (14)

1. A battery (10), characterized in that, comprising: A battery cell (30), including an electrode terminal (31); The first connection assembly (40), comprising a first clamping piece (41) and a flow-flow piece (42), the flow-flow piece (42) being connected to the first clamping piece (41); The second connection assembly (50) is connected to the first clamping part (41), and a plurality of the battery cells (30) are sandwiched between the first clamping part (41) and the second connection between the components (50), so that the busbar (42) and the electrode terminals (31) of the plurality of battery cells (30) are abutted and electrically connected at least along the first direction (X). 2. The battery (10) according to claim 1, characterized in that, the electrode terminals (31) are arranged at both ends of the battery cell (30) along the first direction (X), and the The second connection assembly (50) includes a second clamping piece (51) and the confluence piece (42), the second clamping piece (51) is connected with the confluence piece (42), and the second clamping piece The holder (51) is connected to the first holder (41), and the confluence member (42) connected to the first holder (41) is connected to the second holder (51). The connected bus members (42) are respectively abutted against and electrically connected 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 comprises a casing (32), and the electrode terminal (31) is arranged on the casing (32) At one end along the first direction (X), the casing (32) includes a bottom case (321) disposed opposite to the electrode terminal (31) along the first direction (X); The second connection assembly (50) includes a third clamping part and a confluence member, the confluence member is connected to the third clamping part, and the third clamping part is connected to the first clamping part (41 ) connection, a plurality of the battery cells (30) are sandwiched between the first clamping piece (41) and the third clamping piece, so that the confluence member and the multiple battery cells The bottom shell (321) of the body (30) is opposed and electrically connected. 4. The battery (10) according to claim 1, characterized in that, the collector (42) has a straight section (42a) and a curved section (42b), and the curved section (42b) connects adjacent The straight section (42a), the curved section (42b) protrudes along the first direction (X). 5. The battery (10) according to claim 1, characterized in that, the battery (10) further comprises a circuit board (60), at least part of the busbar (42) is electrically connected to the circuit board (60). connect. 6. The battery (10) according to claim 1, characterized in that, the first clip (41) includes an injection molding part (41a), and the busbar (42) includes an embedded part (42c) and The exposed part (42d), the embedded part (42c) is embedded in the injection molding part (41a), and the exposed part (42d) is exposed on the outside of the first clamping part (41). 7. The battery (10) according to any one of claims 1 to 6, characterized in that, the first clamping member (41) comprises an end plate (411) and a connecting portion (412), and the end plate (411) is arranged at one end of the battery cell (30) along the first direction (X), and is used to connect with the busbar (42), and the connection part (412) is connected to the end plate (411), and for connecting with the second connecting component (50); The end plate (411) has an avoidance hole (411a) penetratingly provided along the first direction (X), and the avoidance hole (411a) is used for passing through the electrode terminal (31). 8. The battery (10) according to claim 7, characterized in that, one of the connection part (412) and the second connection assembly (50) has pins (412a), the other of which The insertion hole (50a) provided by the first clamping member (41 ) and the second connection 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 connecting parts (412) , the connecting portion (412) is provided between at least some of the battery cells (30). 10. The battery (10) according to claim 8, characterized in that, a plurality of battery cells (30) are arranged in an array along the second direction (Y) and the third direction (Z), and the The second direction (Y) intersects the third direction (Z) and is respectively perpendicular to the first direction (X); Two adjacent rows along the second direction (Y) and two adjacent columns of battery cells (30) along the third direction (Z) form a quadrilateral unit, and the interior of each quadrilateral unit The connection part (412) is provided on the side and the peripheral side, and the connection part (412) is misaligned with the battery cell (30) along the second direction (Y) and the third direction (Z) distributed. 11. The battery (10) according to claim 7, characterized in that a guide groove (411b) is provided on the side of the end plate (411) facing the battery cell (30), and the guide groove ( 411b) is used to guide the cooperation between the battery cell (30) and the end plate (411), and the escape hole (411a) is provided at the bottom of the guide groove (411b). 12. An electrical device, characterized in that it comprises the battery (10) according to any one of claims 1 to 11, the battery (10) being used to provide electrical energy. 13. A method for manufacturing a battery, comprising: providing a battery cell (30), the battery cell (30) including an electrode terminal (31); A first connection assembly (40) is provided, the first connection assembly (40) includes a first clamping piece (41) and a flow-flow piece (42), the flow-flow piece (42) is connected to the first clamping piece (41); providing a second connection assembly (50); Assembling the battery cell (30), the first connection assembly (40) and the second connection assembly (50), wherein the second connection assembly (50) and the first clamping member ( 41) Connection, a plurality of the battery cells (30) are interposed between the first clamping member (41) and the second connection assembly (50), so that the bus member (42) and the The electrode terminals (31) of the plurality of battery cells (30) abut against each other along a first direction (X) and are electrically connected. 14. A battery manufacturing system, comprising: a first providing module, configured to provide a battery cell (30), and the battery cell (30) includes an electrode terminal (31); The second providing module is used to provide the first connection assembly (40), the first connection assembly (40) including the first clamping part (41) and the flow part (42), and the flow part (42) is connected to The first clamping member (41); a third providing module, configured to provide a second connection component (50); An assembly module, used for assembling the battery cell (30), the first connection assembly (40) and the second connection assembly (50), wherein the second connection assembly (50) is connected to the first connection assembly (50) A clip (41) is connected, and a plurality of battery cells (30) are sandwiched between the first clip (41) and the second connection assembly (50), so that the confluence A piece (42) abuts and is electrically connected to the electrode terminals (31) of the plurality of battery cells (30) along the first direction (X).