Battery, power consuming device, method for manufacturing battery, and manufacturing system

Abstract

The application provides a battery, a power utilization device, a battery manufacturing method and a manufacturing system. The battery comprises a first end plate, a second end plate, a battery monomer and a connecting mechanism. The first end plate and the second end plate are oppositely arranged along a first direction; the battery monomer is arranged between the first end plate and the second end plate; and the connecting mechanism connects the first end plate and the second end plate. The connecting mechanism comprises a strap, a limiting piece and an adjusting piece. The strap extends along the first direction and is connected to the limiting piece. The adjusting piece connects the limiting piece and the first end plate and is used for adjusting the position of the limiting piece along the first direction. The battery provided by the application can improve the installability of the strap, and the pre-tightening force of the strap on the battery monomer can be adjusted. Thus, the strap has a suitable pre-tightening force on the battery monomer, the stress of the strap on the battery monomer is relatively stable during the working process of the battery, the damage risk of the strap and the battery monomer during the working process of the battery is reduced, and the service life of the battery is improved.

Description

Technical Field

[0001] This application relates to the field of battery technology, and in particular to a battery, an electrical device, a method for manufacturing the battery, and a manufacturing system. 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, lifespan is also a crucial issue to consider. Therefore, how to improve the lifespan of individual battery cells is a pressing problem to be solved in battery cell technology. Summary of the Invention

[0004] This application provides a battery, an electrical device, a method for manufacturing the battery, and a manufacturing system that can improve the battery's lifespan.

[0005] In a first aspect, embodiments of this application provide a battery, including a first end plate, a second end plate, a battery cell, and a connecting mechanism. The first end plate and the second end plate are disposed opposite each other along a first direction; the battery cell is disposed between the first end plate and the second end plate; the connecting mechanism connects the first end plate and the second end plate, and the connecting mechanism includes a cable tie, a limiting member, and an adjusting member. The cable tie extends along the first direction and is connected to the limiting member, and the adjusting member connects the limiting member and the first end plate, and is used to adjust the position of the limiting member along the first direction.

[0006] The battery provided in this application embodiment has a cable tie connecting it to a limiting member, and an adjusting member connecting the limiting member and a first end plate. The adjusting member adjusts the position of the limiting member along a first direction, allowing for normal installation of the cable tie even with certain manufacturing errors, thus improving its installability. Furthermore, the tension of the cable tie itself and the pre-tension force of the cable tie on the battery cell can be adjusted, thereby setting a suitable pre-tension force on the battery cell. This ensures that the force on the cable tie and battery cell is relatively stable during battery operation, reducing the risk of damage to both and improving battery life.

[0007] In some embodiments, the end of the cable tie is wrapped around the limiting member and connected to its inner side. This reduces stress concentration in the cable tie and makes the connection between the cable tie and the limiting member more secure and reliable.

[0008] In some embodiments, the first end plate has a guide hole for receiving at least a portion of the limiting member to guide the limiting member to move in a first direction.

[0009] The guide hole can guide the limiting member to move along the first direction, which helps to improve the smoothness of the limiting member's movement along the first direction.

[0010] In some embodiments, the limiting member includes a limiting body and a pin for engaging with a guide hole, the pin being movable within the guide hole in a first direction. This further improves the smoothness of movement of the limiting member relative to the first end plate.

[0011] In some embodiments, the adjusting member includes a bolt, which is inserted through the first end plate in a first direction and threadedly connected to the limiting member. The bolted connection provides a simple structure, reliable connection, and facilitates adjustment of the preload of the cable ties on the battery cell.

[0012] In some embodiments, the first end plate includes an expansion beam. While ensuring the structural strength of the first end plate, this helps to reduce its weight and achieve overall battery weight reduction.

[0013] In some embodiments, a cable tie is disposed on one side of the battery cell along a second direction, which is perpendicular to the first direction. The first end plate has a recessed groove along the second direction, and at least a portion of the limiting member and at least a portion of the adjusting member are disposed within the groove. This arrangement reduces the additional space occupied by the limiting member and the adjusting member along the second direction, thereby reducing the size of the battery along the second direction and improving the volumetric energy density of the battery.

[0014] In some embodiments, the first end plate has a plurality of grooves spaced apart along a third direction, and a limiting member is provided for each groove. The first direction, the second direction, and the third direction are perpendicular to each other. This arrangement allows the arrangement of the battery cells within the battery to be set according to the allowable installation space of the battery, so as to adapt to the space constraints of the battery and improve the space utilization of the battery.

[0015] Secondly, embodiments of this application provide an electrical device, including a battery provided in any of the above embodiments, wherein the battery is used to provide electrical energy.

[0016] Thirdly, embodiments of this application provide a manufacturing method, comprising: providing a battery cell; providing a first end plate and a second end plate, and mounting the first end plate and the second end plate to both sides of the battery cell along a first direction; providing a connecting mechanism, the connecting mechanism including a cable tie, a limiting member, and an adjusting member, the cable tie being connected to the limiting member; assembling the connecting mechanism, the first end plate, and the second end plate, wherein the cable tie extends along the first direction, and the adjusting member is connected to the limiting member and the first end plate; adjusting the position of the limiting member along the first direction to adjust the preload of the cable tie on the battery cell.

[0017] In some embodiments, the adjusting member includes a bolt for passing through the first end plate along a first direction and being threadedly connected to the limiting member; the step of assembling the connecting mechanism, the first end plate, and the second end plate specifically includes: passing the bolt through the first end plate and the limiting member sequentially along the first direction so that the bolt is threadedly connected to the limiting member; the step of adjusting the position of the limiting member along the first direction specifically includes: adjusting the preload of the bolt and the limiting member to adjust the position of the limiting member along the first direction.

[0018] Understandably, the threaded connection between the bolt and the limiting component makes it easier to adjust the preload of the cable tie on the battery cell.

[0019] Fourthly, embodiments of this application provide a battery manufacturing system, comprising: a first providing module for providing a battery cell; a second providing module for providing a first end plate and a second end plate, the first end plate and the second end plate being disposed opposite each other along a first direction; a third providing module for providing a connecting mechanism, the connecting mechanism including a cable tie, a limiting member, and an adjusting member, the cable tie being connected to the limiting member; a first assembly module for assembling the battery cell, the first end plate, and the second end plate, wherein the battery cell is disposed between the first end plate and the second end plate; a second assembly module for assembling the connecting mechanism, the first end plate, and the second end plate, wherein the cable tie extends along the first direction, and the adjusting member connects the limiting member and the first end plate; and an adjusting module for adjusting the position of the limiting member along the first direction to adjust the preload of the cable tie on the battery cell. 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 battery structure provided in the embodiments 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 battery structure provided in another embodiment of this application;

[0025] Figure 5 This is a schematic diagram of the battery structure with some parts omitted, provided in an embodiment of this application;

[0026] Figure 6 yes Figure 5 A magnified view of a section at point A in the middle;

[0027] Figure 7 This is a front view of the battery provided in an embodiment of this application;

[0028] Figure 8 yes Figure 7 A magnified view of a section at point B in the middle;

[0029] Figure 9 This is a schematic diagram of the structure of the limiting member in the battery provided in the embodiments of this application;

[0030] Figure 10 This is a schematic flowchart of a battery manufacturing method provided in an embodiment of this application;

[0031] Figure 11 This is a schematic flowchart of a battery manufacturing method provided in another embodiment of this application;

[0032] Figure 12 This is a schematic block diagram of a battery manufacturing system provided in an embodiment of this application.

[0033] The accompanying drawings are not necessarily drawn to scale.

[0034] Marker explanation:

[0035] 1. Vehicle; 1a. Motor; 1b. Controller;

[0036] 10. Battery; 11. Bottom shell; 12. Top shell; 13. First end plate; 13a. Guide hole; 131. Groove; 14. Second end plate; 15. Connecting mechanism; 151. Cable tie; 152. Limiting component; 1521. Limiting body; 1522. Pin; 153. Adjusting component;

[0037] 20. Battery module;

[0038] 30. Battery cell;

[0039] 110. First supply module; 120. Second supply module; 130. Third supply module; 140. First assembly module; 150. Second assembly module; 160. Adjustment module;

[0040] X, first direction; Y, second direction; Z, third direction. Detailed Implementation

[0041] 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.

[0042] 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.

[0043] 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.

[0044] 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.

[0045] 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.

[0046] 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.

[0047] 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.

[0048] In related technologies, battery cells are typically secured by end plates and cable ties. The end plates are located inside the housing and are used to secure the stacked battery cells. The two ends of the cable ties are connected to two oppositely positioned end plates. When the cable ties are tensioned, they exert a certain preload on the battery cells. The greater the tension of the cable ties, the greater the preload on the battery cells.

[0049] After discovering the problem of rapid damage to cable ties or individual battery cells during battery use, the inventors conducted a systematic analysis and research on the internal structure of the battery. The results showed that due to inherent length variations in the cable ties during manufacturing, and the fact that their length is generally not adjustable when used to bundle batteries, different cable ties exert varying degrees of pre-tension on the battery cells, making it impossible to achieve a consistent pre-tension. Excessive pre-tension causes significant impact loads on the cable ties when the battery cells are subjected to vibrations or shocks, affecting the structural strength of the cable ties. Conversely, insufficient pre-tension leads to battery cell movement during use, easily damaging both the battery cells and the cable ties. In other words, both excessive and insufficient pre-tension on the battery cells by the cable ties can easily damage the cable ties and related structural components, affecting the battery's lifespan.

[0050] 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, electrical devices using batteries, battery manufacturing methods, and manufacturing systems.

[0051] The battery provided according to an embodiment of this application includes a first end plate, a second end plate, a battery cell, and a connecting mechanism. The first end plate and the second end plate are disposed opposite each other along a first direction. The battery cell is disposed between the first end plate and the second end plate. The connecting mechanism connects the first end plate and the second end plate. The connecting mechanism includes a cable tie, a limiting member, and an adjusting member. The cable tie extends along the first direction and is connected to the limiting member. The adjusting member connects the limiting member and the first end plate and is used to adjust the position of the limiting member along the first direction.

[0052] The battery provided in this application embodiment can easily adjust the pre-tightening force of the cable tie on the battery cell. The cable tie can be set to a suitable pre-tightening force on the battery cell as needed, so that the force on the battery cell and the cable tie is relatively stable during operation, thereby improving the battery's service life.

[0053] 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.

[0054] For ease of explanation, the following embodiments will use a vehicle as an example of an electrical device.

[0055] 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.

[0056] 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 the power needs of vehicle 1 during starting, navigation and driving.

[0057] 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.

[0058] 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.

[0059] The enclosure is used to house individual battery cells, and the enclosure can take many different structural forms.

[0060] In some embodiments, the housing may include a bottom shell 11 and a top shell 12. The bottom shell 11 and the top shell 12 cover each other. The bottom shell 11 and the top shell 12 together define a receiving space for accommodating the battery cell 30. The bottom shell 11 and the top shell 12 may both be hollow structures with an opening on one side. When the opening side of the bottom shell 11 covers the opening side of the top shell 12, a housing with a receiving space is formed. A sealing element may also be provided between the bottom shell 11 and the top shell 12 to achieve a sealed connection between the bottom shell 11 and the top shell 12.

[0061] In practical applications, the bottom shell 11 can be fitted onto the top of the top shell 12. The bottom shell 11 can also be referred to as the upper housing, and the top shell 12 can also be referred to as the lower housing.

[0062] The bottom shell 11 and top shell 12 can be of various shapes, such as cylinders, cuboids, etc. Figure 2 In this example, both the bottom shell 11 and the top shell 12 are rectangular parallelepiped structures.

[0063] 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.

[0064] 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.

[0065] In some embodiments, multiple battery cells 30 in the battery module 20 can be electrically connected through a busbar to achieve parallel, series, or mixed connection of multiple battery cells 30 in the battery module 20.

[0066] like Figures 4 to 6As shown, the battery 10 provided according to an embodiment of this application includes a first end plate 13, a second end plate 14, a battery cell 30, and a connecting mechanism 15. The first end plate 13 and the second end plate 14 are disposed opposite each other along a first direction X. The battery cell 30 is disposed between the end plate and the second end plate 14. The connecting mechanism 15 connects the first end plate 13 and the second end plate 14, and the connecting mechanism 15 includes a cable tie 151, a limiting member 152, and an adjusting member 152. The cable tie 151 extends along the first direction X and is connected to the limiting member 152. The adjusting member 152 connects the limiting member 152 and the first end plate 13, and is used to adjust the position of the limiting member 152 along the first direction X.

[0067] Specifically, battery cells 30 are stacked between the first end plate 13 and the second end plate 14 along the first direction X, and the first end plate 13 and the second end plate 14 limit the battery cells 30 along the first direction X. Cable ties 151 extend along the first direction X, with one end connected to the first end plate 13 and the other end connected to the second end plate 14, to provide preload to the battery cells 30 and reduce the shaking between the battery cells 30.

[0068] One end of the cable tie 151 is connected to the first end plate 13 via a limiting member 152, and the position of the limiting member 152 along the first direction X is adjusted by the adjusting member 152. It can be understood that adjusting the position of the limiting member 152 along the first direction X can adjust the tension of the cable tie 151 along the first direction X, thereby adjusting the preload of the cable tie 151 on the battery cell 30.

[0069] It is understandable that, since the position of the limiting member 152 along the first direction X is adjustable, by adjusting the position of the limiting member 152 along the first direction X, the manufacturing error of the cable tie 151 can be accommodated by adjusting the position of the limiting member 152 along the first direction X, and the influence of the manufacturing error of the cable tie 151 on the pre-tightening force between the cable tie 151 and the battery cell 30 can be reduced.

[0070] Optionally, both ends of the cable tie 151 can be connected to the first end plate 13 and the second end plate 14 respectively via limiting members 152. In this way, the position of both ends of the cable tie 151 along the first direction X can be adjusted, thereby adjusting the pre-tightening force of the cable tie 151 on the battery cell 30. Alternatively, one end of the cable tie 151 can be connected to the first end plate 13 via the limiting member 152, while the other end is directly connected to the second end plate 14, or connected to the second end plate 14 via other intermediate connecting members whose position of the cable tie 151 cannot be adjusted. In this way, although only the position of one end of the cable tie 151 along the first direction X can be adjusted, the purpose of adjusting the pre-tightening force of the cable tie 151 on the battery cell 30 can still be achieved.

[0071] The adjusting member 152 connects the limiting member 152 and the first end plate 13, and can adjust the position of the limiting member 152 relative to the first end plate 13 along the first direction X. Optionally, the connection between the adjusting member 152 and the limiting member 152 can be a threaded connection, and the position of the limiting member 152 along the first direction X can be adjusted by adjusting the length of the threaded connection.

[0072] According to the battery 10 provided in the embodiments of this application, a cable tie 151 is provided to connect to a limiting member 152, and an adjusting member 152 is provided to connect the limiting member 152 and the first end plate 13. The adjusting member 152 adjusts the position of the limiting member 152 along the first direction X. Even with certain manufacturing errors, the cable tie 151 can still be installed normally, improving its installability. Furthermore, the tension of the cable tie 151 itself and the pre-tension force of the cable tie 151 on the battery cell 30 can be adjusted, thereby setting a suitable pre-tension force on the battery cell 30. This ensures that the force on the cable tie 151 and the battery cell 30 is relatively stable during battery operation, reducing the risk of damage to the cable tie 151 and the battery cell 30 during battery operation and improving the service life of the battery 10.

[0073] Optionally, the cable tie 151 can be clamped to the limiting member 152 or connected to the limiting member 152 by fasteners. There is no restriction here, and the choice can be made according to specific needs.

[0074] In some embodiments, the end of the cable tie 151 is wrapped around the limiting member 152 and connected to its inner side.

[0075] By having the cable tie 151 wrapped around the limiting member 152, the contact area between the cable tie 151 and the limiting member 152 can be increased, reducing stress concentration on the cable tie 151 under the same pre-tightening force. Furthermore, the connection method where the end of the cable tie 151 is wrapped around the limiting member 152 and connected to its own inner side is more secure and reliable.

[0076] It is understandable that the cable tie 151 can be wrapped around the limiting member 152 at one end, or both ends can be wrapped around the limiting member 152, and connected to the first end plate 13 and the second end plate 14 respectively through the limiting member 152.

[0077] Optionally, the limiting member 152 can be suspended relative to the first end plate 13, or the first end plate 13 can be provided with a corresponding guide groove or other guide mechanism to guide the movement of the limiting member 152 along the first direction X.

[0078] like Figure 7 and Figure 8As shown, in some embodiments, the first end plate 13 has a guide hole 13a for receiving at least a portion of the limiting member 152 to guide the limiting member 152 to move along a first direction X.

[0079] Specifically, the guide hole 13a can extend along the first direction X. For example, the guide hole 13a is an oblong hole. At least a portion of the limiting member 152 is disposed within the guide hole 13a and guides the limiting member 152 to move along the first direction X. This arrangement can improve the smoothness of the movement of the limiting member 152 along the first direction X.

[0080] It is understandable that in embodiments where both ends of the cable tie 151 are connected to the first end plate 13 and the second end plate 14 respectively via limiting members 152, the second end plate 14 may also be provided with a guide groove or the same structure as the guide hole 13a, so as to improve the smoothness of the corresponding limiting member 152 moving relative to the second end plate 14 in the first direction X.

[0081] The specific structure of the limiting member 152 is not limited, as long as it can be connected to the cable tie 151 and the adjusting member 152.

[0082] like Figure 9 As shown, in some embodiments, the limiting member 152 includes a limiting body 1521 and a pin 1522 for engaging with a guide hole 13a, the pin 1522 being movable within the guide hole 13a in a first direction X.

[0083] Specifically, the limiting body 1521 can be used to connect with the cable tie 151. The pin 1522 can be set on one side of the limiting body 1521, or pins 1522 can be set on both opposite sides of the limiting body 1521 perpendicular to the first direction X. When pins 1522 are set on both opposite sides of the limiting body 1521, two guide holes 13a are correspondingly set on the first end plate 13 to accommodate the two pins 1522 respectively. At this time, the first end plate 13 can serve as a bearing component of the limiting member 152, and during the movement of the limiting member 152 along the first direction X, it is beneficial to maintain the force balance of the limiting member 152, making the movement of the limiting member 152 along the first direction X smoother.

[0084] Optionally, the adjusting member 152 may include a bolt, and the limiting member 152 has a light hole for the bolt to pass through. The adjusting member 152 can be configured to pass through the first end plate 13 and the limiting member 152 respectively, and then the bolt and nut can be engaged to adjust the preload of the bolt and nut, so as to adjust the position of the limiting member 152 along the first direction X.

[0085] In some embodiments, the adjusting member 152 includes a bolt for passing through the first end plate 13 along a first direction X and being threadedly connected to the limiting member 152.

[0086] Specifically, the displacement of the limiting member 152 along the first direction X is adjusted by adjusting the length of the threaded connection between the bolt and the limiting member 152 along the first direction X, and the tension of the cable tie 151 is adjusted by adjusting the preload of the threaded connection between the bolt and the limiting member 152, thereby adjusting the preload of the cable tie 151 on the battery cell 30. This setting makes it easier to adjust.

[0087] The specific structure of the first end plate 13 and the second end plate 14 is not limited; they can be beam-shaped, plate-shaped, or truss-shaped structures, and can be selected according to specific needs.

[0088] In some embodiments, the first end plate 13 includes an expansion beam.

[0089] The first end plate 13 includes an expansion beam, which, while ensuring the structural strength of the first end plate 13, helps to reduce the weight of the first end plate 13 and achieve overall lightweighting of the battery 10.

[0090] It is understood that the second end plate 14 can also be provided with an expansion beam, which has the same technical effect as the embodiment in which the first end plate 13 includes an expansion beam.

[0091] In some embodiments, the cable tie 151 is disposed on one side of the battery cell 30 along the second direction Y, which is perpendicular to the first direction X.

[0092] The limiting member 152 can be connected to one side of the first end plate 13 along the second direction Y, or to the middle position of the first end plate 13 along the second direction Y, depending on the specific requirements.

[0093] In some embodiments, the first end plate 13 has a recess 131 that is recessed in the second direction Y, and at least a portion of the limiting member 152 and at least a portion of the adjusting member 152 are disposed in the recess 131.

[0094] Specifically, at least a portion of the limiting member 152 and at least a portion of the adjusting member 152 are disposed within the groove 131. That is, a portion of the limiting member 152 and the adjusting member 152 can be accommodated within the groove 131, or the entire limiting member 152 and the adjusting member 152 can be accommodated within the groove 131.

[0095] It is understandable that by setting the first end plate 13 to have a recessed groove 131 along the second direction Y, and setting at least a portion of the limiting member 152 and at least a portion of the adjusting member 152 to be disposed in the groove 131, the limiting member 152 and the adjusting member 152 can reduce the additional space occupied by the limiting member 152 and the adjusting member 152 along the second direction Y, thereby reducing the size of the battery 10 along the second direction Y and improving the volumetric energy density of the battery 10.

[0096] Optionally, in an embodiment where the first end plate 13 has both a guide hole 13a and a groove 131, the guide hole 13a can be located within the groove 131 to further reduce the space occupied by the limiting member 152 and the adjusting member 152 along the second direction Y.

[0097] It is understood that in the embodiment where the cable tie 151 is connected to the second end plate 14 via the limiting member 152, the second end plate 14 may be configured to have the same structure as the groove 131 of the first end plate 13.

[0098] In some embodiments, the first end plate 13 has a plurality of grooves 131 spaced apart along the third direction Z, and a limiting member 152 is provided for each groove 131. The first direction X, the second direction Y and the third direction Z are perpendicular to each other.

[0099] Specifically, while the battery cells 30 are stacked along the first direction X, they can also be stacked along the third direction Z, with corresponding multiple cable ties 151 spaced apart along the third direction Z to bundle the corresponding battery cells 30. This arrangement allows for the arrangement of the battery cells 30 within the battery 10 to adapt to space constraints and improve space utilization, based on the allowable installation space of the battery 10.

[0100] The electrical device provided according to the embodiments of this application includes the battery 10 provided in any of the above embodiments, and the battery 10 is used to provide electrical energy.

[0101] 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.

[0102] like Figure 10 As shown, the method for manufacturing the battery 10 according to the embodiments of this application includes:

[0103] S10, provides 30 battery cells;

[0104] S20. Provide a first end plate 13 and a second end plate 14, and install the first end plate 13 and the second end plate 14 to both ends of the pool unit along the second direction Y.

[0105] S30. A connecting mechanism 15 is provided, which includes a cable tie 151, a limiting member 152 and an adjusting member 152, wherein the cable tie 151 is connected to the limiting member 152.

[0106] S40, assembly connection mechanism 15, first end plate 13 and second end plate 14, wherein the cable tie 151 extends along the first direction X, and the adjusting member 152 connects the limiting member 152 and the second end plate 14.

[0107] S50. Adjust the position of the limiting member 152 along the first direction X to adjust the preload of the cable tie 151 on the battery cell 30.

[0108] The battery 10 manufacturing method provided in this application embodiment can adjust the tension of the cable tie 151 by adjusting the position of the limiting member 152 along the first direction X, thereby adjusting the pre-tightening force of the cable tie 151 on the battery cell 30. This makes the force on the cable tie 151 and the battery cell 30 more stable during the operation of the battery 10, which is beneficial to improving the service life of the battery 10.

[0109] In some embodiments, the adjusting member 152 includes a bolt for passing through the first end plate 13 along a first direction X and being threadedly connected to the limiting member 152.

[0110] like Figure 11 As shown, step S40, assembling the connecting mechanism 15, the first end plate 13, and the second end plate 14, specifically includes: S41, passing the bolt sequentially through the first end plate 13 and the limiting member 152 along the first direction X, so that the bolt is threadedly connected to the limiting member 152. Step S50, adjusting the position of the limiting member 152 along the first direction X, specifically includes: S51, adjusting the preload of the bolt and the limiting member 152 to adjust the position of the limiting member 152 along the first direction X.

[0111] like Figure 12 As shown, the battery manufacturing system 10 provided according to an embodiment of this application includes a first providing module 110, a second providing module 120, a third providing module 130, a first assembly module, a second assembly module 150, and an adjustment module 160. The first providing module 110 provides a battery cell 30, and the second providing module 120 provides a first end plate 13 and a second end plate 14, with the first end plate 13 and the second end plate 14 disposed opposite to each other along a first direction X. The third providing module 130 provides a connecting mechanism 15, which includes a cable tie 151, a limiting member 152, and an adjustment member 152, with the cable tie 151 connected to the limiting member 152. The first assembly module 140 assembles the battery cell 30, the first end plate 13, and the second end plate 14, wherein the battery cell 30 is disposed between the first end plate 13 and the second end plate 14. The second assembly module 150 assembles the connecting mechanism 15, the first end plate 13, and the second end plate 14. The cable tie 151 extends along the first direction X, and the adjusting member 152 connects the limiting member 152 and the first end plate 13. The adjusting module 160 is used to adjust the position of the limiting member 152 along the first direction X, so as to adjust the preload of the cable tie 151 on the battery cell 30.

[0112] Specifically, the adjustment module 160 can be adjusted with the help of certain tools to ensure that the cable tie 151 has a preset tension.

[0113] The battery manufacturing system 10 provided in this application embodiment includes an adjustment module 160 that adjusts the position of the limiting member 152 along the first direction X to adjust the tension of the cable tie 151 itself, thereby adjusting the pre-tension force of the cable tie 151 on the battery cell 30. This ensures that the cable tie 151 has a suitable pre-tension force on the battery cell 30, improving the stability of the force on the cable tie 151 and the battery cell 30 during the operation of the battery 10, reducing the risk of damage to both, and thus improving the service life of the battery 10.

[0114] 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 it comprises: The first end plate (13) and the second end plate (14) are arranged opposite to each other along the first direction (X); A battery cell (30) is disposed between the first end plate (13) and the second end plate (14); as well as A connecting mechanism (15) connects the first end plate (13) and the second end plate (14). The connecting mechanism (15) includes a cable tie (151), a limiting member (152), and an adjusting member (153). The cable tie (151) extends along the first direction (X) and is connected to the limiting member (152). The adjusting member (153) connects the limiting member (152) and the first end plate (13) and is used to adjust the position of the limiting member (152) along the first direction (X). The first end plate (13) has a guide hole (13a) for receiving at least a portion of the limiting member (152) to guide the limiting member (152) to move along the first direction (X). The limiting member (152) includes a limiting body (1521) and a pin (1522) for engaging with the guide hole (13a). The pin (1522) is movable within the guide hole (13a) along the first direction (X). The adjusting member (153) includes a bolt for passing through the first end plate (13) along the first direction (X) and being threadedly connected to the limiting member (152).

2. The battery (10) according to claim 1, characterized in that, The end of the cable tie (151) is wrapped around the limiting member (152) and connected to its inner side.

3. The battery (10) according to claim 1, characterized in that, The first end plate (13) includes an expansion beam.

4. The battery (10) according to any one of claims 1 to 3, characterized in that, The cable tie (151) is disposed on one side of the battery cell (30) along the second direction (Y), the second direction (Y) being perpendicular to the first direction (X), the first end plate (13) having a groove (131) recessed along the second direction (Y), at least a portion of the limiting member (152) and at least a portion of the adjusting member (153) being disposed within the groove (131).

5. The battery (10) according to claim 4, characterized in that, The first end plate (13) has a plurality of grooves (131) spaced apart along a third direction (Z), and a limiting member (152) is provided for each groove (131). The first direction (X), the second direction (Y) and the third direction (Z) are perpendicular to each other.

6. An electrical device, characterized in that, Includes the battery (10) as described in any one of claims 1 to 5, the battery (10) being used to provide electrical energy.

7. A method for manufacturing a battery (10), for manufacturing the battery (10) according to any one of claims 1 to 5, characterized in that, include: Provide battery cells (30); A first end plate (13) and a second end plate (14) are provided, and the first end plate (13) and the second end plate (14) are mounted on both sides of the battery cell (30) along a first direction (X), wherein the first end plate (13) has a guide hole (13a). A connecting mechanism (15) is provided, the connecting mechanism (15) including a cable tie (151), a limiting member (152) and an adjusting member (153), the cable tie (151) being connected to the limiting member (152); Assemble the connecting mechanism (15), the first end plate (13), and the second end plate (14), wherein the cable tie (151) extends along the first direction (X), the adjusting member (153) connects the limiting member (152) and the first end plate (13), and the guide hole (13a) is used to receive at least a portion of the limiting member (152) to guide the limiting member (152) to move along the first direction (X); Adjust the position of the limiting member (152) along the first direction (X) to adjust the preload of the cable tie (151) on the battery cell (30).

8. The manufacturing method according to claim 7, characterized in that, The adjusting member (153) includes a bolt for passing through the first end plate (13) along the first direction (X) and being threadedly connected to the limiting member (152); The steps of assembling the connecting mechanism (15), the first end plate (13), and the second end plate (14) specifically include: The bolt is passed sequentially through the first end plate (13) and the limiting member (152) along the first direction (X) so that the bolt is threadedly connected to the limiting member (152); The step of adjusting the position of the limiting member (152) along the first direction (X) specifically includes: Adjust the preload of the bolt and the limiting member (152) to adjust the position of the limiting member (152) along the first direction (X).

9. A battery (10) manufacturing system for manufacturing the battery (10) according to any one of claims 1 to 5, characterized in that, include: The first supply module (110) is used to supply battery cells (30). The second providing module (120) is used to provide a first end plate (13) and a second end plate (14), the first end plate (13) and the second end plate (14) being disposed opposite to each other along a first direction (X); The third providing module (130) is used to provide a connecting mechanism (15), the connecting mechanism (15) including a cable tie (151), a limiting member (152) and an adjusting member (153), the cable tie (151) being connected to the limiting member (152). The first assembly module (140) is used to assemble the battery cell (30), the first end plate (13) and the second end plate (14), wherein the battery cell (30) is disposed between the first end plate (13) and the second end plate (14); The second assembly module (150) is used to assemble the connecting mechanism (15), the first end plate (13) and the second end plate (14), wherein the cable tie (151) extends along the first direction (X), the adjusting member (153) connects the limiting member (152) and the first end plate (13), the first end plate (13) has a guide hole (13a) for receiving at least a portion of the limiting member (152) to guide the limiting member (152) to move along the first direction (X); The adjustment module (160) is used to adjust the position of the limiting member (152) along the first direction (X) to adjust the preload of the cable tie (151) on the battery cell (30).

Images