Rechargeable battery

Abstract

The utility model provides a rechargeable battery which comprises a battery shell, a battery cell, a cap assembly, a fixing ring, a PCB, a positive electrode contact and a plastic package layer, one end of the battery shell is open, and the inner circumferential side of the battery shell is provided with a convex ring. And the battery cell is arranged in the battery shell. And the cap assembly is arranged in the battery shell, is placed on the surface of the convex ring, is conducted with the battery cell, and is also configured to be fixed in the battery shell after the end part of the battery shell is curled. The fixing ring is arranged outside one end, close to the cap assembly, of the battery shell. The PCB is installed on the fixing ring, located between the cap assembly and the fixing ring and communicated with the cap assembly. The positive electrode contact is installed on the PCB and located on the side, opposite to the cap assembly, of the PCB. And the plastic package layer wraps the peripheries of the battery shell and the fixing ring and is configured to fix the fixing ring on the battery shell. According to the rechargeable battery provided by the invention, the battery space is saved, so that the battery has a larger space for accommodating the battery cell, and the battery capacity of the rechargeable battery is favorably improved.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of electric energy storage devices, in particular to a rechargeable battery. BACKGROUND

[0002] A rechargeable battery (also known as a secondary battery) is a type of battery that can be repeatedly used after being charged by an external power source. Unlike disposable batteries (primary batteries), rechargeable batteries can recover their chemical energy after discharging through charging, thereby achieving multiple cycles of use.

[0003] A rechargeable battery is disclosed in a Chinese utility model patent (patent application number: 202123178452.3), which includes a stamped hardware shell, a positive contact, a battery cell, a face pad, a bracket, a PCB board, a spring, a charging port, an LED indicator light, and a positioning column. In the case of uniform battery model, due to the existence of the PCB board and the charging port, the PCB board and the charging port occupy a large volume, and compared with traditional batteries, the battery capacity of the rechargeable battery is greatly reduced, which reduces the convenience of use. SUMMARY

[0004] The purpose of the embodiments of the present application is to provide a rechargeable battery to solve the technical problem of the reduction of battery flux of the rechargeable battery caused by the existence of the PCB board and the charging port in the prior art.

[0005] To achieve the above-mentioned purpose, the technical solution adopted by the present application is to provide a rechargeable battery, which comprises:

[0006] A battery shell, which is provided with an opening at one end and has a convex ring on the inner circumferential side;

[0007] A battery cell, which is installed in the battery shell;

[0008] A cap assembly, which is installed in the battery shell and placed on the surface of the convex ring, and is in conduction with the battery cell, and is configured to be fixed in the battery shell after the end of the battery shell is crimped;

[0009] A fixing ring, which is provided outside the end of the battery shell close to the cap assembly;

[0010] A PCB board, which is installed on the fixing ring and located between the cap assembly and the fixing ring, and is in conduction with the cap assembly;

[0011] A positive contact, which is installed on the PCB board and located on the side of the PCB board away from the cap assembly;

[0012] A plastic sealing layer is wrapped around the battery shell and the outer periphery of the fixing ring and is configured to fix the fixing ring to the battery shell.

[0013] Optionally, the cap assembly comprises a sealing ring, a first cap and a second cap, the sealing ring is arranged in the battery shell and placed on the convex ring surface, the first cap is placed in the sealing ring and in conduction with the battery cell, and the second cap is placed in the first cap and in conduction with the first cap.

[0014] Optionally, the sealing ring comprises a sealing lower ring, a sealing ring plate and a sealing upper ring, the sealing lower ring is arranged in the convex ring, the sealing ring plate is connected to one end of the sealing lower ring away from the battery cell and forms a limit with the convex ring, and the sealing lower ring is connected to the outer periphery of the sealing ring plate.

[0015] Optionally, the first cap comprises a first plate body, a first sleeve body and a first ring plate, the first plate body is arranged in the sealing lower ring and in conduction with the battery cell, the first sleeve body is connected to the outer periphery of the first plate body and located in the sealing lower ring, and the first ring plate is connected to one end of the first sleeve body away from the first plate body and forms a limit with the sealing ring plate.

[0016] Optionally, the second cap comprises a second plate body, a second sleeve body and a second ring plate, the second plate body is arranged in the first sleeve body and in conduction with the first plate body, the second sleeve body is connected to the outer periphery of the second plate body and located in the first sleeve body, and the second ring plate is connected to one end of the second sleeve body away from the second plate body and forms a limit with the first ring plate.

[0017] Optionally, a friction pattern is arranged on the side of the first ring plate away from the convex ring.

[0018] Optionally, the first plate body, the first sleeve body and the first ring plate are all arranged as aluminum plates.

[0019] Optionally, the second plate body, the second sleeve body and the second ring plate are all arranged as nickel-plated steel plates.

[0020] Optionally, the first plate body and the first sleeve body form a first groove.

[0021] Optionally, the second plate body and the second sleeve body form a second groove.

[0022] The rechargeable battery provided by the application has the following advantages:

[0023] The application provides a rechargeable battery, in the case of uniform battery model, compared with the prior art, by eliminating the charging port, the battery space is greatly saved, so that the battery has larger space to accommodate the battery core, which helps to improve the battery capacity of the rechargeable battery. In use, the rechargeable battery does not need to be charged frequently, improving the convenience of use.

[0024] Through the cap assembly, the battery core can be sealed in the battery shell, preventing the battery core from being in contact with the external environment, causing the battery core to age and be damaged, and effectively protecting the battery core. Moreover, through the cap assembly, the overall strength of the rechargeable battery can be effectively improved.

[0025] Before assembling the rechargeable battery, the fixing ring, the PCB board and the positive contact are pre-assembled, when assembling the rechargeable battery, the pre-assembled cap assembly is placed in the battery shell, and the cap assembly is fixed in the battery shell by crimping the end of the battery shell. Subsequently, the pre-assembled fixing ring, PCB board and positive contact are placed in the battery shell close to the cap assembly, and are fixed by the plastic sealing layer. In summary, the above structure and assembly method greatly improve the assembly efficiency and are convenient to assemble.

[0026] When placing the cap assembly, the convex ring can be used to carry the cap assembly, which helps to improve the convenience of installation. BRIEF DESCRIPTION OF DRAWINGS

[0027] In order to more clearly illustrate the technical solutions in the embodiments of the application, the following will briefly introduce the drawings needed to be used in the embodiments or prior art description. Obviously, the drawings in the following description are only some embodiments of the application, and other drawings can be obtained by those skilled in the art without creative labor.

[0028] Fig. 1 An exploded view of a rechargeable battery provided by the embodiments of the application;

[0029] Fig. 2 An exploded view of a cap assembly of a rechargeable battery provided by the embodiments of the application;

[0030] Fig. 3 A sectional view of a cap assembly of a rechargeable battery provided by the embodiments of the application.

[0031] In the drawings, various reference signs represent:

[0032] 100, battery shell; 110, convex ring;

[0033] 200, cap assembly; 210, sealing ring; 211, lower sealing ring; 212, sealing ring plate; 213, upper sealing ring; 220, first cap; 221, first plate body; 222, first sleeve body; 223, first ring plate; 224, first groove body; 230, second cap; 231, second plate body; 232, second sleeve body; 233, second ring plate; 234, second groove body;

[0034] 300, fixing ring;

[0035] 400, PCB board;

[0036] 500, positive contact. DETAILED DESCRIPTION

[0037] In order to make the technical problems to be solved, technical solutions and beneficial effects of the present application clearer, the present application will be further described in detail below in combination with the drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present application and not intended to limit the present application.

[0038] It should be noted that when an element is referred to as being "mounted on", "fixed on" or "disposed on" another element, it can be directly on the other element or indirectly on the other element. When an element is referred to as being "connected to" another element, it can be directly connected to the other element or indirectly connected to the other element.

[0039] It should be understood that the terms "length", "width", "upper", "lower", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer" and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only used to facilitate the description of the present application and simplify the description, and therefore cannot be understood as indicating or implying that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as limiting the present application.

[0040] In addition, the terms "first", "second" are only used for descriptive purposes and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the technical features indicated. Therefore, the features defined with "first", "second" can explicitly or implicitly include one or more of the features. In the description of the present application, the meaning of "multiple" is two or more, unless otherwise explicitly and specifically limited.

[0041] In the present application, the term "and / or" describes the association relationship of the associated objects, which means that there can be three kinds of relationships. For example, A and / or B can mean that A exists alone, A and B exist together, and B exists alone. Wherein A and B can be singular or plural. The character " / " generally represents that the associated objects before and after are in an "or" relationship.

[0042] As shown in Figs. 1-3 The application provides a rechargeable battery, which comprises a battery shell 100, a battery cell (not shown in the figure), a cap assembly 200, a fixing ring 300, a PCB board 400, a positive electrode contact 500 and a plastic sealing layer (not shown in the figure). The battery shell 100 is provided with an opening at one end and has a convex ring 110 on the inner circumferential side. The battery cell is installed in the battery shell 100. The cap assembly 200 is installed in the battery shell 100 and placed on the surface of the convex ring 110, and is in conduction with the battery cell, and is further configured to be fixed in the battery shell 100 after the end of the battery shell 100 is crimped. The fixing ring 300 is arranged outside the end of the battery shell 100 close to the cap assembly 200. The PCB board 400 is installed on the fixing ring 300 and located between the cap assembly 200 and the fixing ring 300, and is in conduction with the cap assembly 200. The positive electrode contact 500 is installed on the side of the PCB board 400 away from the cap assembly 200. The plastic sealing layer is wrapped around the outer circumferences of the battery shell 100 and the fixing ring 300, and is configured to fix the fixing ring 300 to the battery shell 100. The convex ring 110 is punched from the outer circumferential side of the battery shell 100 by a punching device.

[0043] The rechargeable battery provided by the application can greatly save the battery space by eliminating the charging port under the condition that the battery model is unified, compared with the related art, so that the battery has a larger space to accommodate the battery cell, which helps to improve the battery capacity of the rechargeable battery. In the use process, the rechargeable battery does not need to be charged frequently, which improves the convenience of use.

[0044] The cap assembly 200 can seal the battery cell in the battery shell 100, prevent the battery cell from contacting the external environment and causing the battery cell to age and damage, and effectively protect the battery cell. Moreover, the cap assembly 200 can effectively improve the overall strength of the rechargeable battery.

[0045] Before assembling the rechargeable battery, the fixing ring 300, the PCB board 400 and the positive electrode contact 500 are pre-assembled. When the rechargeable battery is assembled, the pre-assembled cap assembly 200 is placed in the battery shell 100, and the cap assembly 200 is fixed in the battery shell 100 by crimping the end of the battery shell 100. Then, the pre-assembled fixing ring 300, PCB board 400 and positive electrode contact 500 are placed at the end of the battery shell 100 close to the cap assembly 200 and fixed by the plastic sealing layer. In summary, the above structure and assembly method greatly improve the assembly efficiency and are convenient to assemble.

[0046] When the cap assembly 200 is placed, the convex ring 110 can be used to bear the cap assembly 200, which helps to improve the convenience of installation.

[0047] In one embodiment of the present application, referring to Figs. 1-3 The cap assembly 200 comprises a sealing ring 210, a first cap 220 and a second cap 230. The sealing ring 210 is arranged in the battery shell 100 and placed on the surface of the convex ring 110. The first cap 220 is placed in the sealing ring 210 and in conduction with the battery cell. The second cap 230 is placed in the first cap 220 and in conduction with the first cap 220.

[0048] In this way, under the cooperation of the first cap 220 and the second cap 230, compared with the related art, in the case of damage to one of the caps, the two caps can still protect the battery cell, thereby providing double protection for the battery cell and achieving good protection effect. Moreover, in the cooperation of the first cap 220 and the second cap 230, in the process of use, in the extreme environment of high temperature, humidity and dust, the external environmental pollutants can be effectively prevented from entering the battery shell 100 to pollute the battery cell.

[0049] Through the sealing ring 210, after the edge curling of the end of the battery shell 100, the sealing ring 210 can be sealed between the first cap 220 and the battery shell 100, and the sealing ring 210 can also be sealed between the second cap 230 and the battery shell 100, thereby preventing the external environmental pollutants from entering the battery shell 100 to pollute the battery cell, and achieving good sealing effect.

[0050] In one embodiment of the present application, referring to Figs. 1-3 The sealing ring 210 comprises a sealing lower ring 211, a sealing ring plate 212 and a sealing upper ring 213. The sealing lower ring 211 is arranged in the convex ring 110. The sealing ring plate 212 is connected to one end of the sealing lower ring 211 away from the battery cell and forms a limit with the convex ring 110. The sealing lower ring 211 is connected to the outer circumferential side of the sealing ring plate 212.

[0051] In this way, when the sealing ring 210 is placed in the battery shell 100, the sealing lower ring 211 and the sealing ring plate 212 can form a limit with the convex ring 110, so that the sealing lower ring 211, the sealing ring plate 212 and the sealing upper ring 213 can be stably placed on the surface of the convex ring 110. Moreover, when the first cap 220 is placed in the sealing ring 210, the sealing lower ring 211 and the sealing ring plate 212 can be used to bear the first cap 220.

[0052] In one embodiment of the present application, referring to Figs. 1-3The first cover cap 220 comprises a first plate body 221, a first sleeve body 222 and a first ring plate 223. The first plate body 221 is arranged in the sealing lower ring 211 and is in conduction with the battery cell. The first sleeve body 222 is connected to the outer periphery of the first plate body 221 and is located in the sealing lower ring 211. The first ring plate 223 is connected to the end of the first sleeve body 222 away from the first plate body 221 and forms a limit with the sealing ring plate 212.

[0053] In this way, the first plate body 221, the first sleeve body 222 and the first ring plate 223 can cover the surface of the sealing ring plate 212 when the battery cell is in conduction. After the first cover cap 220 is placed in the sealing ring 210, the first ring plate 223 can form a limit with the sealing ring plate 212, so that the first cover cap 220 can be stably placed in the sealing ring 210. In addition, the sealing lower ring 211 can seal the gap between the first sleeve body 222 and the inner periphery of the convex ring 110, and the sealing ring plate 212 can seal the gap between the first ring plate 223 and the convex ring 110, so that the sealing effect is good. The first plate body 221, the first sleeve body 222 and the first ring plate 223 can form an arch-shaped structure, which greatly improves the strength of the first cover cap 220, thereby helping to improve the overall strength of the rechargeable battery.

[0054] In an embodiment of the present application, please refer to Figs. 1-3 The second cover cap 230 comprises a second plate body 231, a second sleeve body 232 and a second ring plate 233. The second plate body 231 is arranged in the first sleeve body 222 and is in conduction with the first plate body 221. The second sleeve body 232 is connected to the outer periphery of the second plate body 231 and is located in the first sleeve body 222. The second ring plate 233 is connected to the end of the second sleeve body 232 away from the second plate body 231 and forms a limit with the first ring plate 223.

[0055] In this way, the second plate body 231, the second sleeve body 232 and the second ring plate 233 can cover the surface of the first cover cap 220 when the first plate body 221 is in conduction. After the second cover cap 230 is placed in the sealing ring 210, the second ring plate 233 can form a limit with the first ring plate 223, so that the second cover cap 230 can be stably placed on the surface of the first cover cap 220. In addition, the sealing upper ring 213 can seal the gap between the battery shell 100 and the second ring plate 233, so that the sealing effect is good. The second plate body 231, the second sleeve body 232 and the second ring plate 233 can form an arch-shaped structure, which greatly improves the strength of the second cover cap 230, thereby helping to improve the overall strength of the rechargeable battery.

[0056] In an embodiment of the present application, please refer to Figs. 1-3The first ring plate 223 is provided with friction lines (not shown in the figure) on the side opposite to the convex ring 110.

[0057] In this way, in use, the surface area of the first ring plate 223 is increased by the friction lines on the surface of the first ring plate 223, so as to facilitate heat dissipation of the first ring plate 223.

[0058] In an embodiment of the present application, referring to Figs. 1-3 The first plate body 221, the first sleeve body 222 and the first ring plate 223 are all aluminum plates.

[0059] In this way, the first plate body 221, the first sleeve body 222 and the first ring plate 223 are all aluminum plates, the surface of the aluminum plate is easy to form an aluminum oxide film, has good corrosion resistance, can effectively protect the battery cell, has good heat dissipation effect and excellent electrical conductivity.

[0060] In an embodiment of the present application, referring to Figs. 1-3 The second plate body 231, the second sleeve body 232 and the second ring plate 233 are all nickel-plated steel plates.

[0061] In this way, the second plate body 231, the second sleeve body 232 and the second ring plate 233 are all nickel-plated steel plates, which facilitates current transmission and has good corrosion resistance, and can effectively protect the battery cell.

[0062] In an embodiment of the present application, referring to Figs. 1-3 The first plate body 221 and the first sleeve body 222 form a first groove body 225.

[0063] In this way, the second plate body 231 and the second sleeve body 232 are positioned by the first groove body 225, which facilitates installation of the second cap 230. Moreover, the second plate body 231 and the second sleeve body 232 are also limited by the first groove body 225, which helps to improve the structural stability between the first cap 220 and the second cap 230, so that the second cap 230 can stably protect the battery cell.

[0064] In an embodiment of the present application, referring to Figs. 1-3 Figs. 1-3 The second plate body 231 and the second sleeve body 232 form a second groove body 234.

[0065] In this way, the PCB board is positioned by the second groove body, which facilitates installation of the PCB board.

[0066] One or more embodiments of the present application are intended to cover all such alternatives, modifications and variations falling within the broad scope of the present application. Therefore, any omission, modification, equivalent replacement, improvement, etc. made within the spirit and principles of one or more embodiments of the present application should be included in the protection scope of the present application.

Claims

1. A rechargeable battery, characterized by The application relates to a battery shell (100) with an open end, a convex ring (110) on the inner periphery, an electric core installed in the battery shell (100), a cap assembly (200) installed in the battery shell (100) and placed on the surface of the convex ring (110), and in electrical connection with the electric core, and configured to be fixed in the battery shell (100) after the end of the battery shell (100) is curled, a fixing ring (300) arranged outside the end of the battery shell (100) close to the cap assembly (200), a PCB board (400) installed on the fixing ring (300) and between the cap assembly (200) and the fixing ring (300), and in electrical connection with the cap assembly (200), a positive electrode contact (500) installed on the PCB board (400) and on the side of the PCB board (400) away from the cap assembly (200), and a plastic sealing layer wrapped around the outer periphery of the battery shell (100) and the fixing ring (300), and configured to fix the fixing ring (300) to the battery shell (100). The cap assembly (200) comprises a sealing ring (210), a first cap (220) and a second cap (230), the sealing ring (210) is arranged in the battery shell (100) and placed on the surface of the convex ring (110), the first cap (220) is placed in the sealing ring (210) and in electrical connection with the electric core, and the second cap (230) is placed in the first cap (220) and in electrical connection with the first cap (220). The sealing ring (210) comprises a lower sealing ring (211), a sealing ring plate (212) and an upper sealing ring (213), the lower sealing ring (211) is arranged through the convex ring (110), the sealing ring plate (212) is connected to the end of the lower sealing ring (211) away from the electric core and forms a limit with the convex ring (110), and the lower sealing ring (211) is connected to the outer periphery of the sealing ring plate (212). The first cap (220) comprises a first plate body (221), a first sleeve body (222) and a first ring plate (223), the first plate body (221) is arranged in the lower sealing ring (211) and in electrical connection with the electric core, the first sleeve body (222) is connected to the outer periphery of the first plate body (221) and located in the lower sealing ring (211), and the first ring plate (223) is connected to the end of the first sleeve body (222) away from the first plate body (221) and forms a limit with the sealing ring plate (212). ​ ​ ​ ​ 2. A rechargeable battery as claimed in claim 1, wherein ​ 3. A rechargeable battery as claimed in claim 2, wherein ​ 4. A rechargeable battery as claimed in claim 3, wherein ​ 5. A rechargeable battery as claimed in claim 4, wherein The second cover cap (230) comprises a second plate body (231), a second sleeve body (232) and a second ring plate (233), the second plate body (231) is arranged in the first sleeve body (222) and is in communication with the first plate body (221), the second sleeve body (232) is connected to the outer periphery of the second plate body (231) and is located in the first sleeve body (222), and the second ring plate (233) is connected to one end of the second sleeve body (232) away from the second plate body (231) and forms a limit with the first ring plate (223).

6. A rechargeable battery as claimed in claim 4, wherein A frictional pattern is formed on the side of the first ring plate (223) away from the convex ring (110).

7. A rechargeable battery as claimed in claim 4, wherein The first plate body (221), the first sleeve body (222) and the first ring plate (223) are all aluminum plates.

8. A rechargeable battery as claimed in claim 5, wherein The second plate body (231), the second sleeve body (232) and the second ring plate (233) are all nickel-plated steel plates.

9. A rechargeable battery as claimed in claim 4, wherein The first plate body (221) and the first sleeve body (222) form a first groove body (225).

10. A rechargeable battery as claimed in claim 5, wherein The second plate body (231) and the second sleeve body (232) form a second groove body (234).

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