A hard-shell arc-shaped battery and an arc-shaped battery manufacturing method

Abstract

The application discloses a hard-shell arc-shaped battery and an arc-shaped battery manufacturing method, and the hard-shell arc-shaped battery comprises an arc-shaped hard shell body provided with a groove and a first conductive part; an arc-shaped roll core arranged in the groove, the arc-shaped roll core being provided with a positive electrode lug and a negative electrode lug; and an arc-shaped cover plate connected with the arc-shaped hard shell body to shield the opening of the groove and form a sealed cavity, the sealed cavity being filled with electrolyte, the arc-shaped cover plate being provided with a second conductive part, one of the positive electrode lug and the negative electrode lug being connected with the first conductive part, and the other being connected with the second conductive part. The arc-shaped roll core is located in the sealed cavity, the positive electrode lug and the negative electrode lug of the arc-shaped roll core are connected with the first conductive part and the second conductive part respectively, the sealed cavity is filled with electrolyte, and the arc-shaped roll core is discharged externally through the first conductive part and the second conductive part. The shell formed after the arc-shaped cover plate is connected with the arc-shaped hard shell body is arc-shaped, can be adapted to wearable electronic products, and is favorable for improving the wearing comfort.

Description

Technical Field

[0001] This invention relates to the field of arc-shaped batteries, and particularly to a hard-shell arc-shaped battery and a method for manufacturing an arc-shaped battery. Background Technology

[0002] Batteries are an essential power supply component in electronic products. With the development of smart wearable electronic products, such as smartwatches and smart bracelets, they have been widely used. However, traditional batteries are generally cylindrical or cuboid in shape, which cannot be adapted to the ring-shaped wearable electronic products, resulting in the problem that wearable electronic products are larger in size and reduce wearing comfort. Summary of the Invention

[0003] This invention aims to at least solve one of the technical problems existing in the prior art. To this end, this invention proposes a hard-shell arc-shaped battery that can be adapted to wearable electronic products, improving wearing comfort.

[0004] This invention also proposes a method for manufacturing arc-shaped batteries, which can produce batteries adapted to wearable electronic products and improve wearing comfort.

[0005] According to a first aspect of the present invention, a hard-shell arc-shaped battery includes: an arc-shaped hard shell having a groove and a first conductive portion; an arc-shaped core disposed in the groove, the arc-shaped core having a positive electrode tab and a negative electrode tab; an arc-shaped cover plate connected to the arc-shaped hard shell to cover the opening of the groove to form a sealed cavity, the sealed cavity being filled with electrolyte, the arc-shaped cover plate having a second conductive portion, one of the positive electrode tab and the negative electrode tab being connected to the first conductive portion, and the other being connected to the second conductive portion.

[0006] According to an embodiment of the present invention, a hard-shell arc-shaped battery has at least the following advantages: an arc-shaped cover plate and an arc-shaped hard shell are connected to form a sealed cavity, an arc-shaped core is located inside the sealed cavity, the positive and negative tabs of the arc-shaped core are connected to a first conductive part and a second conductive part, respectively, and the sealed cavity is filled with electrolyte, allowing the arc-shaped core to discharge to the outside through the first and second conductive parts, thereby providing electrical energy. The outer shell formed after the arc-shaped cover plate and the arc-shaped hard shell are connected is arc-shaped, which can be adapted to wearable electronic products, thus improving wearing comfort.

[0007] According to some embodiments of the present invention, a first laser welding layer is provided between the edge of the arc-shaped cover plate and the arc-shaped rigid shell, and the arc-shaped cover plate is connected to the arc-shaped rigid shell through the first laser welding layer.

[0008] According to some embodiments of the present invention, a conductive element is further included, wherein the arc-shaped cover plate is provided with a through hole communicating with the sealing cavity, the conductive element is inserted through the through hole to form the first conductive portion, and the conductive element is connected to the positive electrode tab or the negative electrode tab.

[0009] According to some embodiments of the present invention, an insulating kit is also included, wherein the arc-shaped cover plate is a steel plate, the insulating kit is located in the through hole, the conductive element is disposed in the insulating kit, the arc-shaped hard shell is a steel shell, and the steel shell forms the second conductive part.

[0010] According to some embodiments of the present invention, an insulating spacer is further provided within the sealed cavity, a second laser-welded layer is provided between the conductive element and the positive electrode tab, the conductive element is connected to the positive electrode tab through the second laser-welded layer, a third laser-welded layer is provided between the arc-shaped rigid shell and the negative electrode tab, the arc-shaped rigid shell is connected to the negative electrode tab through the third laser-welded layer, and the insulating spacer is at least partially located between the positive electrode tab and the arc-shaped rigid shell.

[0011] According to some embodiments of the present invention, the insulating spacer is provided with a spacer portion that divides the sealed cavity into a first sub-chamber and a second sub-chamber. The conductive element and the insulating kit portion are located in the first sub-chamber, and the arc-shaped core is located in the second sub-chamber. The spacer portion abuts against the arc-shaped core to restrict the movement of the arc-shaped core.

[0012] According to some embodiments of the present invention, the arc-shaped cover plate is provided with a first recess, the first recess being located on the wall surface of the arc-shaped cover plate forming the first sub-chamber, and the insulating kit and the conductive component being located within the first recess.

[0013] According to some embodiments of the present invention, a sealing element is further included. The arc-shaped cover plate is provided with an injection port communicating with the first sub-chamber. The insulating spacer is provided with a communication port communicating with the first sub-chamber and the second sub-chamber. A fourth laser welding layer is provided between the sealing element and the arc-shaped cover plate. The sealing element is connected to the arc-shaped cover plate through the fourth laser welding layer to seal the injection port.

[0014] According to some embodiments of the present invention, the arc-shaped core includes a positive electrode sheet, a negative electrode sheet, an insulating sheet, and an arc-shaped shaping member, wherein the positive electrode sheet, the insulating sheet, and the negative electrode sheet are wound to form a winding assembly, and the arc-shaped shaping member surrounds the winding assembly.

[0015] A method for manufacturing an arc-shaped battery according to a second aspect of the present invention includes:

[0016] The positive electrode tab of the arc-shaped core is laser welded to the second conductive part on the arc-shaped cover plate;

[0017] The insulating spacer and the arc-shaped core are placed inside the arc-shaped rigid shell;

[0018] The negative electrode tab of the arc-shaped core is laser welded to the first conductive part;

[0019] Laser welding is performed between the arc-shaped cover plate and the arc-shaped rigid shell;

[0020] Inject electrolyte into the injection port on the arc-shaped cover plate;

[0021] The sealing element is laser welded to the curved cover plate to seal the injection port.

[0022] The arc-shaped battery manufacturing method according to embodiments of the present invention has at least the following beneficial effects: First, the positive electrode tab of the arc-shaped core is laser-welded to the second conductive part of the arc-shaped cover plate, which enables a quick and reliable tight connection between the positive electrode tab and the second conductive part, eliminating the need for laser welding after the arc-shaped core is installed in the arc-shaped hard shell, thus facilitating processing. Then, the arc-shaped core and insulating spacer are placed in the groove of the arc-shaped hard shell, and the negative electrode tab of the arc-shaped core is laser-welded to the arc-shaped hard shell, enabling a quick, reliable, and tight connection between the negative electrode tab and the arc-shaped hard shell, which possesses conductive properties. Laser welding the arc-shaped cover plate to the arc-shaped hard shell ensures a tight connection between the two, making the seal between them more reliable. Electrolyte is injected through the injection port, and then the sealing member is laser-welded to the arc-shaped cover plate to seal the injection port, ensuring a reliable seal of the sealing cavity. The arc-shaped core can discharge externally through the first and second conductive parts, achieving the effect of providing electrical energy. The outer shell formed by connecting the arc-shaped cover plate and the arc-shaped hard shell is arc-shaped, which can be adapted to wearable electronic products and improve wearing comfort.

[0023] Additional aspects and advantages of the invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. Attached Figure Description

[0024] The above and / or additional aspects and advantages of the present invention will become apparent and readily understood from the description of the embodiments taken in conjunction with the following drawings, in which:

[0025] Figure 1 This is a perspective view of one embodiment of the present invention;

[0026] Figure 2 This is an exploded perspective view of one embodiment of the present invention;

[0027] Figure 3 This is a cross-sectional view of one embodiment of the present invention;

[0028] Figure 4 for Figure 3 A magnified view of a portion of point A in the middle. Detailed Implementation

[0029] Embodiments of the present invention are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and should not be construed as limiting the present invention.

[0030] In the description of this invention, it should be understood that the orientation descriptions, such as up, down, front, back, left, right, etc., are based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limiting this invention.

[0031] In the description of this invention, the use of "first" and "second" is for the purpose of distinguishing technical features only, and should not be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated or the order of the technical features indicated.

[0032] In the description of this invention, unless otherwise explicitly defined, terms such as "set up," "install," and "connect" should be interpreted broadly, and those skilled in the art can reasonably determine the specific meaning of the above terms in this invention in conjunction with the specific content of the technical solution.

[0033] like Figures 1 to 4 As shown, a hard-shell arc-shaped battery according to an embodiment of the present invention includes: an arc-shaped hard shell 100, having a groove 110 and a first conductive portion 120; an arc-shaped core 200 disposed in the groove 110, the arc-shaped core 200 having a positive electrode tab 201 and a negative electrode tab 202; an arc-shaped cover plate 300 connected to the arc-shaped hard shell 100 to cover the opening of the groove 110 to form a sealed cavity 101, the sealed cavity 101 being filled with electrolyte, the arc-shaped cover plate 300 having a second conductive portion 310, one of the positive electrode tab 201 and the negative electrode tab 202 being connected to the first conductive portion 120, and the other being connected to the second conductive portion 310.

[0034] The arc-shaped cover plate 300 and the arc-shaped rigid shell 100 are connected to form a sealed cavity 101. The arc-shaped core 200 is located inside the sealed cavity 101. The positive electrode tab 201 and the negative electrode tab 202 of the arc-shaped core 200 are respectively connected to the first conductive part 120 and the second conductive part 310. The sealed cavity 101 is filled with electrolyte, so that the arc-shaped core 200 can discharge to the outside through the first conductive part 120 and the second conductive part 310, thereby providing electrical energy. The outer shell formed after the arc-shaped cover plate 300 and the arc-shaped rigid shell 100 are connected has an arc shape, which can be adapted to wearable electronic products and improve wearing comfort.

[0035] Reference Figure 4 In some embodiments of the present invention, a first laser welding layer 104 is provided between the edge of the arc-shaped cover plate 300 and the arc-shaped rigid shell 100, and the arc-shaped cover plate 300 is connected to the arc-shaped rigid shell 100 through the first laser welding layer 104.

[0036] The arc-shaped cover plate 300 is connected to the arc-shaped hard shell 100 through the first laser welding layer 104. That is, the arc-shaped cover plate 300 is connected to the arc-shaped hard shell 100 through laser welding, which helps to reduce the probability of material deformation. Moreover, the connection of laser welding is precise and dense, which helps to stably form the sealing cavity 101 and improve reliability.

[0037] Reference Figures 2 to 4 In some embodiments of the present invention, a conductive element 400 is also included. The arc-shaped cover plate 300 is provided with a through hole 320 communicating with the sealing cavity 101. The conductive element 400 passes through the through hole 320 to form the first conductive part 120. The conductive element 400 is connected to the positive electrode tab 201 or the negative electrode tab 202.

[0038] The conductive element 400 passes through the through hole 320 and connects to the positive electrode 201 or negative electrode 202 of the arc-shaped core 200 inside the sealed cavity 101. The conductive element 400 forms a first conductive part 120 and the part located outside the arc-shaped cover plate 300 can contact external devices to achieve electrical connection.

[0039] Reference Figures 2 to 4 In some embodiments of the present invention, an insulating kit 500 is also included, wherein the arc-shaped cover plate 300 is a steel plate, the insulating kit 500 is located in the through hole 320, the conductive element 400 is inserted in the insulating kit 500, and the arc-shaped hard shell 100 is a steel shell, the steel shell forming the second conductive part 310.

[0040] The arc-shaped hard shell 100 is a steel shell, and the arc-shaped cover plate 300 is a steel plate. Since the steel plate is conductive, it is inserted through the through hole 320 via an insulating kit 500. Then, the conductive element 400 is inserted through the insulating kit 500 to prevent the conductive element 400 from contacting the steel plate. The steel plate is connected to the steel shell through a first laser welding layer 104 to form an integral whole. That is, the steel shell itself and the steel plate form the second conductive part 310, and the conductive element 400, as the first conductive part 120, together with the entire steel shell and steel plate, form the positive and negative electrodes of the battery, respectively. The use of a steel shell and steel plate can provide sufficient structural strength to prevent deformation under stress, which is beneficial to protecting the arc-shaped core 200. Furthermore, the arc shape of both the steel shell and steel plate is more suitable for wearable electronic devices.

[0041] refer to Figures 2 to 4 In some embodiments of the present invention, the conductive element 400 is provided with a first annular groove 420, the insulating kit 500 is provided with a second annular groove 510, the wall surface of the arc-shaped cover plate 300 forming the through hole 320 is located in the second annular groove 510, the conductive element 400 passes through the insulating kit 500, and the insulating kit 500 is located in the first annular groove 420.

[0042] The wall surface of the through hole 320 of the arc-shaped cover plate 300 is located in the second annular groove 510. The two abut against each other, which can restrict the movement of the insulating kit 500 relative to the arc-shaped cover plate. The insulating kit 500 abuts against the wall surface of the first annular groove 420, which can restrict the movement of the conductive element 400 relative to the insulating kit 500. With this structure, the position of the conductive element 400 can be fixed, so that the position of the conductive element 400 relative to the arc-shaped cover plate 300 is stable.

[0043] The insulating kit 500 can be an embodiment of an object with insulating properties, such as a rubber part or a resin part. Furthermore, when the insulating kit 500 is an object with insulating properties and a certain degree of elasticity, such as a rubber part or a resin part, the diameter of the central channel of the insulating kit 500 is smaller than the diameter of the wall surface of the first annular groove 420 formed on the conductive member 400. That is, the insulating kit 500 and the bottom wall surface of the first annular groove 420 are interference-fitted, allowing the insulating kit 500 to fit tightly against the wall surface of the first annular groove 420, which helps improve the sealing performance between the insulating kit 500 and the conductive member 400. Additionally, the diameter of the bottom wall surface of the second annular groove 510 formed by the insulating kit 500 is larger than the diameter of the wall surface of the through hole 320 formed by the arc-shaped cover plate 300. That is, the insulating second annular groove 510 and the wall surface of the through hole 320 are interference-fitted, which helps improve the sealing performance between the insulating kit 500 and the arc-shaped cover plate 300.

[0044] Reference Figures 2 to 4In some embodiments of the present invention, an insulating spacer 600 is further included within the sealed cavity 101. A second laser welding layer 410 is disposed between the conductive element 400 and the positive electrode tab 201. The conductive element 400 is connected to the positive electrode tab 201 through the second laser welding layer 410. A third laser welding layer is disposed between the arc-shaped rigid shell 100 and the negative electrode tab 202. The arc-shaped rigid shell 100 is connected to the negative electrode tab 202 through the third laser welding layer. The insulating spacer 600 is at least partially located between the positive electrode tab 201 and the arc-shaped rigid shell 100.

[0045] The positive tab 201 of the arc-shaped core 200 is connected to the conductive component 400. In embodiments where the arc-shaped rigid shell 100 is a steel shell or other conductive device, the negative tab 202 of the arc-shaped core 200 is directly connected to the arc-shaped rigid shell 100. An insulating spacer 600, at least partially located between the positive tab 201 and the arc-shaped rigid shell 100, prevents direct contact between the positive tab 201 and the arc-shaped rigid shell 100, avoiding battery short circuits and improving battery reliability. The conductive component 400 is connected to the positive tab 201 via a second laser welding layer 410, and the arc-shaped rigid shell 100 is connected to the negative tab 202 via a third laser welding layer. That is, the conductive component 400 is laser-welded to the positive tab 201, and the arc-shaped rigid shell 100 is laser-welded to the negative tab 202. This makes the connection between the conductive component 400 and the positive tab 201, as well as the arc-shaped rigid shell 100 and the negative tab 202, tighter and improves reliability.

[0046] Reference Figures 2 to 4 In some embodiments of the present invention, the insulating spacer 600 is provided with a spacer portion 610, which divides the sealed cavity 101 into a first sub-cavity 102 and a second sub-cavity 103. The conductive element 400 and the insulating kit 500 are partially located in the first sub-cavity 102, and the arc-shaped core 200 is located in the second sub-cavity 103. The spacer portion 610 abuts against the arc-shaped core 200 to restrict the movement of the arc-shaped core 200.

[0047] The spacer portion 610 of the insulating spacer 600 divides the sealed cavity 101 into a first sub-cavity 102 and a second sub-cavity 103. The first sub-cavity 102 accommodates the conductive element 400, the insulating kit 500, and the insulating spacer 600 itself. The second sub-cavity 103 accommodates the arc-shaped core 200. The spacer portion 610 abuts against the arc-shaped core 200, so that the arc-shaped core 200 abuts against the arc-shaped rigid shell 100, thereby restricting the movement of the arc-shaped core 200. This helps to prevent the arc-shaped core 200 from colliding with the arc-shaped rigid shell 100 during use and movement, thus protecting the arc-shaped core 200 and improving reliability.

[0048] refer to Figures 2 to 4 In some embodiments of the present invention, the end wall of the insulating spacer 600 facing away from the spacer portion 610 abuts against one end wall of the groove 110, the spacer portion 610 abuts against the arc-shaped core 200 such that the arc-shaped core 200 abuts against the other end wall of the groove 110, the arc-shaped cover plate 300 is connected to the arc-shaped rigid shell 100 to clamp the arc-shaped core 200, and the width of the groove 110 matches the width of the arc-shaped core 200.

[0049] The two ends of the arc-shaped core 200 along the length direction abut against the end walls of the spacer 610 and the groove 110, respectively. The two ends of the arc-shaped core 200 along the width direction abut against the side walls of the groove 110. The upper and lower walls of the arc-shaped core 200 abut against the arc-shaped cover plate 300 and the bottom wall of the groove 110, respectively. With this structure, the arc-shaped core 200 can be effectively fixed, preventing the arc-shaped core 200 from shaking due to movement, which helps to improve the reliability of the structure.

[0050] Reference Figures 2 to 4 In some embodiments of the present invention, the arc-shaped cover plate 300 is provided with a first recess 330, the first recess 330 being located on the wall surface of the arc-shaped cover plate 300 forming the first sub-cavity 102, and the insulating kit 500 and the conductive element 400 being partially located within the first recess 330.

[0051] By providing a first recess 330 on the arc-shaped cover plate 300, the first recess 330 is located on the wall surface of the arc-shaped cover plate 300 forming the first sub-chamber 102, that is, the first recess 330 is recessed into the first sub-chamber 102, which can make full use of the space of the first sub-chamber 102. At the same time, the insulating kit 500 and the conductive element 400 are partially located in the first recess 330, so that the insulating kit 500 and the conductive element 400 do not protrude too much from the surface of the arc-shaped cover plate 300, which is conducive to making full use of the space of the first sub-chamber 102, making the overall surface smoother and the overall structure more compact.

[0052] Reference Figures 2 to 4 In some embodiments of the present invention, a sealing member 700 is further included. The arc-shaped cover plate 300 is provided with an injection port 340 communicating with the first sub-chamber 102. The insulating spacer 600 is provided with a communication port 620 communicating with the first sub-chamber 102 and the second sub-chamber 103. A fourth laser welding layer is provided between the sealing member 700 and the arc-shaped cover plate 300. The sealing member 700 is connected to the arc-shaped cover plate 300 through the fourth laser welding layer to seal the injection port 340.

[0053] After the arc-shaped cover plate 300 is connected to the arc-shaped hard shell 100, electrolyte is injected into the first sub-chamber 102 through the injection port 340. The electrolyte also flows into the second sub-chamber 103 through the connecting port 620, eventually filling the second sub-chamber 103 with electrolyte, allowing the arc-shaped core 200 to fully contact the electrolyte. The sealing component 700 is connected to the arc-shaped cover plate 300 through the fourth laser welding layer to seal the injection port 340. That is, the sealing component 700 is laser welded to the arc-shaped cover plate 300, which makes the sealing component 700 accurately and tightly connected to the arc-shaped cover plate 300, which is conducive to the reliable sealing of the injection port 340 by the sealing component 700 and improves reliability.

[0054] Reference Figure 2 In some embodiments of the present invention, the arc-shaped cover plate 300 is provided with a second recess 350, the injection port 340 is located at the bottom of the second recess 350, and the edge of the sealing member 700 matches the side wall surface of the second recess 350.

[0055] The arc-shaped cover plate 300 has a second recess 350, in which the sealing component 700 is placed. This allows the sealing component 700 to be positioned, facilitating subsequent laser welding between the sealing component 700 and the arc-shaped cover plate 300. It also prevents the sealing component 700 from protruding from the surface of the arc-shaped cover plate 300, thus preventing it from scratching or colliding with external objects and improving the reliability of the structure.

[0056] Reference Figures 2 to 4 In some embodiments of the present invention, the arc-shaped core 200 includes a positive electrode sheet 210, a negative electrode sheet 220, an insulating sheet 230, and an arc-shaped shaping member 240. The positive electrode sheet 210, the insulating sheet 230, and the negative electrode sheet 220 are wound to form a winding assembly 250, and the arc-shaped shaping member 240 surrounds the winding assembly 250.

[0057] After the positive electrode 210, the insulating sheet 230 and the negative electrode 220 are wound to form a winding assembly 250, the winding assembly 250 can be made into an arc shape that matches the arc-shaped hard shell 100 by means of stamping or other methods. The arc-shaped shaping part 240 surrounds the winding assembly 250, which helps to make the arc shape of the winding assembly 250 more stable, that is, the structure of the arc-shaped core 200 is more stable and reliable.

[0058] A method for manufacturing an arc-shaped battery according to a second aspect of the present invention includes:

[0059] The positive electrode tab 201 of the arc-shaped core 200 is laser welded to the second conductive part 310 on the arc-shaped cover plate 300;

[0060] The insulating spacer 600 and the arc-shaped core 200 are placed inside the arc-shaped rigid housing 100;

[0061] The negative electrode tab 202 of the arc-shaped core 200 is laser welded to the first conductive part 120;

[0062] The arc-shaped cover plate 300 is laser welded to the arc-shaped rigid shell 100;

[0063] Electrolyte is injected into the injection port 340 on the arc-shaped cover plate 300;

[0064] The sealing component 700 is laser welded to the arc-shaped cover plate 300 to seal the injection port 340.

[0065] First, the positive electrode tab 201 of the arc-shaped core 200 is laser-welded to the second conductive part 310 on the arc-shaped cover plate 300. This allows for a quick and reliable tight connection between the positive electrode tab 201 and the second conductive part 310, eliminating the need to perform laser welding after the arc-shaped core 200 is installed into the arc-shaped rigid shell 100, thus simplifying the processing operation. Next, the arc-shaped core 200 and the insulating spacer 600 are placed in the groove 110 of the arc-shaped rigid shell 100. The negative electrode tab 202 of the arc-shaped core 200 is then laser-welded to the arc-shaped rigid shell 100, ensuring a quick, reliable, and tight connection between the negative electrode tab 202 and the arc-shaped rigid shell 100, giving the arc-shaped rigid shell 100 conductive properties. Finally, the arc-shaped cover plate 300 is laser-welded to the arc-shaped rigid shell 100, ensuring a tight connection between them and enhancing the sealing reliability. Electrolyte is injected through the injection port 340, and then the sealing member 700 is laser-welded to the arc-shaped cover plate 300 to seal the injection port 340, ensuring a reliable seal in the sealing cavity 101. The arc-shaped core 200 can discharge to the outside through the first conductive part 120 and the second conductive part 310, thus providing electrical energy. The outer shell formed by connecting the arc-shaped cover plate 300 and the arc-shaped hard shell 100 is arc-shaped, which can be adapted to wearable electronic products and improve wearing comfort.

[0066] In some embodiments of the present invention, before the laser welding step of the positive electrode tab 201 of the arc-shaped core 200 to the second conductive portion 310 on the arc-shaped cover plate 300, the method further includes:

[0067] The positive electrode 210, the negative electrode 220 and the insulating sheet 230 are wound together to form a winding assembly 250;

[0068] The winding assembly 250 is stamped to make the winding assembly 250 into an arc shape;

[0069] The arc-shaped shaping part 240 surrounds the winding assembly 250 to form an arc-shaped core 200.

[0070] By stamping the winding assembly 250, the winding assembly 250 is made into an arc shape to match the arc-shaped hard shell 100 and the arc-shaped cover plate 300. The arc-shaped shaping part 240 surrounds the winding assembly 250 to form an arc-shaped core 200, which makes the arc-shaped core 200 shape structure more stable and reliable.

[0071] The technical features of the above embodiments can be combined in any way. For the sake of brevity, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0072] Of course, the present invention is not limited to the above-described embodiments. Those skilled in the art can make equivalent modifications or substitutions without departing from the spirit of the present invention. All such equivalent modifications or substitutions are included within the scope defined by the claims of this application.

Claims

1. A hard-shell arc-shaped battery, characterized in that, include: The arc-shaped hard shell (100) is provided with a groove (110) and a first conductive part (120). An arc-shaped core (200) is disposed in the groove (110), and the arc-shaped core (200) is provided with a positive electrode tab (201) and a negative electrode tab (202). An arc-shaped cover plate (300) is connected to the arc-shaped hard shell (100) to cover the opening of the groove (110) to form a sealed cavity (101). The sealed cavity (101) is filled with electrolyte. A second conductive part (310) is provided on the arc-shaped cover plate (300). One of the positive electrode tab (201) and the negative electrode tab (202) is connected to the first conductive part (120), and the other is connected to the second conductive part (310). It also includes a conductive element (400), the arc-shaped cover plate (300) is provided with a through hole (320) communicating with the sealing cavity (101), the conductive element (400) passes through the through hole (320) to form a second conductive part (310), and the conductive element (400) is connected to the positive electrode (201); It also includes an insulating kit (500), the arc-shaped cover plate (300) is a steel plate, the insulating kit (500) is located in the through hole (320), the conductive element (400) is in the insulating kit (500), the arc-shaped hard shell (100) is a steel shell, and the steel shell forms the first conductive part (120). It also includes an insulating spacer (600) located within the sealed cavity (101), the insulating spacer (600) being at least partially located between the positive electrode lug (201) and the arc-shaped hard shell (100), the insulating spacer (600) being provided with a spacer portion (610), the spacer portion (610) dividing the sealed cavity (101) into a first sub-chamber (102) and a second sub-chamber (103), the conductive element (400) and the insulating kit (500) being partially located in the first sub-chamber (102), the arc-shaped core (200) being located in the second sub-chamber (103), the end wall of the insulating spacer (600) facing away from the spacer portion (610) abutting against one end wall of the groove (110), The spacer (610) abuts against the arc-shaped core (200) to restrict the movement of the arc-shaped core (200). The width of the groove (110) matches the width of the arc-shaped core (200). The two ends of the arc-shaped core (200) along the length direction abut against the end walls of the spacer (610) and the groove (110), respectively. The arc-shaped cover plate (300) is provided with a first recess (330). The first recess (330) is located on the wall surface of the arc-shaped cover plate (300) forming the first sub-cavity (102). The insulating kit (500) and the conductive element (400) are partially located in the first recess (330).

2. The hard-shell arc-shaped battery according to claim 1, characterized in that: A first laser welding layer (104) is provided between the edge of the arc-shaped cover plate (300) and the arc-shaped hard shell (100), and the arc-shaped cover plate (300) is connected to the arc-shaped hard shell (100) through the first laser welding layer (104).

3. A hard-shell arc-shaped battery according to claim 1, characterized in that: A second laser welding layer (410) is provided between the conductive element (400) and the positive electrode (201), and the conductive element (400) is connected to the positive electrode (201) through the second laser welding layer (410). A third laser welding layer is provided between the arc-shaped hard shell (100) and the negative electrode (202), and the arc-shaped hard shell (100) is connected to the negative electrode (202) through the third laser welding layer.

4. A hard-shell arc-shaped battery according to claim 1, characterized in that: It also includes a sealing component (700), the arc-shaped cover plate (300) is provided with an injection port (340) communicating with the first sub-chamber (102), the insulating partition (600) is provided with a communication port (620) communicating with the first sub-chamber (102) and the second sub-chamber (103), a fourth laser welding layer is provided between the sealing component (700) and the arc-shaped cover plate (300), and the sealing component (700) is connected to the arc-shaped cover plate (300) through the fourth laser welding layer to block the injection port (340).

5. A hard-shell arc-shaped battery according to claim 1, characterized in that: The arc-shaped core (200) includes a positive electrode sheet (210), a negative electrode sheet (220), an insulating sheet (230), and an arc-shaped shaping member (240). The positive electrode sheet (210), the insulating sheet (230), and the negative electrode sheet (220) are wound to form a winding assembly (250), and the arc-shaped shaping member (240) surrounds the winding assembly (250).

6. The method for manufacturing a hard-shell arc-shaped battery according to claim 4, characterized in that, include: The positive electrode tab (201) of the arc-shaped core (200) is laser welded to the second conductive part (310) on the arc-shaped cover plate (300); The insulating spacer (600) and the arc-shaped core (200) are placed inside the arc-shaped rigid shell (100); The negative electrode tab (202) of the arc-shaped core (200) is laser welded to the first conductive part (120); The arc-shaped cover plate (300) is laser welded to the arc-shaped rigid shell (100); Electrolyte is injected into the injection port (340) on the arc-shaped cover plate (300); The sealing element (700) is laser welded to the arc-shaped cover plate (300) to seal the injection port (340).

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