Battery cover plate structure, battery, and electrical device

Abstract

A battery cover plate structure, a battery, and an electrical device. The battery cover plate structure comprises an integrally formed plate body (100); the plate body (100) is provided with a mounting table (102) which is protruded inwards and upwards and is configured to mount a current collector; and the mounting table (102) is provided around the plate body (100) along the circumferential direction thereof. The mounting table (102) is formed on the plate body (100), the mounting table (102) is protruded inwards and upwards, and when a current collector needs to be mounted, the mounting position of the current collector can be quickly determined by means of the mounting table (102), so that the current collector can be directly mounted on the mounting table (102), thereby facilitating the mounting of the current collector; and moreover, the mounting table (102) can be used as a reinforcing rib in the whole plate body (100), and has the function of enhancing the strength of the plate body (100).

Description

Battery cover structure, battery and electrical equipment Technical Field

[0001] This utility model patent relates to the technical field of batteries, specifically, to a battery cover structure, a battery, and electrical equipment. Background Art

[0002] A current collector is a crucial component in batteries, often used to connect to multiple devices in a circuit. It consists of a metal disk with multiple contact pins, which connect to the pins of other devices.

[0003] The current collector acts as a connecting device in the circuit. It can transmit signals from multiple devices and merge multiple different signals to form a more complex circuit. The current collector can also be connected to multiple tabs in the battery to better transmit signals. Technical issues

[0004] In the prior art, a current collector is disposed in a battery and connected to a cover plate. However, the existing cover plate is flat, which makes it inconvenient to install the current collector on the cover plate. Technical Solutions

[0005] The purpose of the utility model is to provide a shell structure of a lithium battery, aiming to solve the problem in the prior art that it is inconvenient to install a current collector in the battery.

[0006] The utility model is implemented in this way: the battery cover plate structure comprises an integrally formed plate body, wherein the plate body has an inwardly convex mounting platform for mounting the current collector, and the mounting platform is arranged around the circumference of the plate body.

[0007] Furthermore, the current collector is provided with a mounting surface adapted to the mounting platform.

[0008] Furthermore, the plate body is concavely arranged at a position corresponding to the mounting platform.

[0009] Furthermore, the plate body has an explosion-proof plate, the explosion-proof plate is provided with notches, and the explosion-proof plate and the plate body are integrally formed.

[0010] Furthermore, the explosion-proof disk is formed in the middle of the plate body, and the mounting platform surrounds the outer periphery of the explosion-proof disk.

[0011] The present utility model also provides a battery, including a shell and the above-mentioned battery cover structure, wherein the shell has a cavity with a bottom opening, and the plate body is arranged at the bottom opening; the outer periphery of the plate body has a downwardly concave step groove, and the step groove is arranged around the circumference of the plate body, the bottom of the shell is embedded in the step groove and is fixedly connected to the plate body, and the plate body closes the bottom opening.

[0012] Furthermore, the bottom of the shell has a bottom wall, and the bottom wall abuts against the bottom of the step groove.

[0013] Furthermore, an inner side docking wall is formed on the inner side of the step groove, and the inner side docking wall is arranged around the circumference of the plate body; the inner side wall of the shell abuts against the inner side wall docking wall.

[0014] Furthermore, the cover plate has a flat section arranged in an annular shape, and the flat section surrounds the outer periphery of the mounting platform; the inner side of the flat section is docked with the outer periphery of the mounting platform, and the step groove is formed on the outer side of the mounting platform.

[0015] The utility model also provides a battery comprising the above. Beneficial effects

[0016] Compared with the prior art, the battery cover plate structure provided by the present invention forms a mounting platform on the plate body, and the mounting platform is arranged to convex upward. When the current collector needs to be installed, the mounting position of the current collector can be quickly determined through the mounting platform, so that the current collector can be directly installed on the mounting platform, which facilitates the installation of the current collector; at the same time, the mounting platform can be used as a reinforcing rib in the entire plate body, thereby strengthening the strength of the plate body.

[0017] The battery provided in this embodiment has a simple structure for fitting between the shell and the cover plate, and the process is also simple. Stress concentration will not cause uneven bulging of the cover plate. The cover plate is provided with a step groove, and the bottom of the shell is embedded in the step groove for fixation, thereby ensuring direct sealing between the cover plate and the shell. The setting of the step groove avoids damage to the battery cells inside the cavity during the welding process. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] FIG1 is a perspective schematic diagram of a battery cover structure provided by the present invention;

[0019] FIG2 is a perspective schematic diagram of the battery cover structure provided by the present invention;

[0020] FIG3 is a partial cross-sectional schematic diagram of the housing and the plate provided by the present invention;

[0021] FIG4 is an enlarged schematic diagram of point A in FIG3 ;

[0022] FIG5 is an enlarged schematic diagram of point B in FIG1 . The best embodiment of the present utility model

[0023] In order to make the purpose, technical solutions and advantages of the present invention more clearly understood, the present invention is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not intended to limit the present invention.

[0024] The implementation of the present invention is described in detail below with reference to specific embodiments.

[0025] The same or similar numbers in the drawings of this embodiment correspond to the same or similar parts; in the description of this utility model, it should be understood that if there are terms such as "upper", "lower", "left", "right", etc. indicating directions or positional relationships, they are based on the directions or positional relationships shown in the drawings. This is only for the convenience of describing the utility model and simplifying the description, and does not indicate or imply that the device or element referred to must have a specific direction, be constructed and operated in a specific direction. Therefore, the terms describing the positional relationship in the drawings are only used for illustrative purposes and cannot be understood as limiting this patent. For ordinary technicians in this field, the specific meanings of the above terms can be understood according to specific circumstances.

[0026] 1-5 , which are preferred embodiments of the present invention.

[0027] The battery cover structure includes an integrally formed plate body 100 having an inwardly convex mounting platform 102 for mounting a current collector. The mounting platforms 102 are arranged around the circumference of the plate body 100. When the plate body 100 is assembled with the housing 200, the plate body 100 convexly faces inward toward the interior of the battery, facilitating the installation of the current collector.

[0028] The battery cover plate structure provided above forms a mounting platform 102 on the plate body 100, and the mounting platform 102 is arranged to convex upward. When the current collector needs to be installed, the mounting position of the current collector can be quickly determined through the mounting platform 102, so that the current collector can be directly installed on the mounting platform 102, which facilitates the installation of the current collector; at the same time, the mounting platform 102 can be used as a reinforcing rib in the entire plate body 100, thereby strengthening the plate body 100.

[0029] The current collector may be fixedly mounted on the mounting platform 102 by welding, or may be connected by other various mounting and fixing methods.

[0030] The current collector is provided with a mounting surface adapted to the mounting platform 102 , which makes it easier to connect and install the current collector and the mounting platform 102 .

[0031] The portion of the plate body 100 corresponding to the mounting platform 102 is concave, so as to ensure that the thickness of each portion of the plate body 100 is substantially uniform, and can be formed simultaneously with the convex structure through a stamping operation to simplify the processing technology.

[0032] In this embodiment, the plate 100 includes an explosion-proof disc 101 having a notch 1011 formed therein. The disc 101 is integrally formed with the plate 100. When an abnormality occurs within the battery, causing a sudden increase in pressure, and when the pressure exceeds a set value, the disc 101 will rupture at the location of the notch 1011 to relieve the pressure and prevent the battery from exploding.

[0033] The plate body 100 is stamped to form the explosion-proof disk 101 thereon, or it can be formed by other integral molding methods.

[0034] The rupture disk 101 is formed in the center of the plate 100, and the mounting platform 102 surrounds the periphery of the rupture disk 101. This facilitates the placement of the rupture disk 101 and mounting platform 102. The mounting platform 102 prevents deformation of the plate 100 during the scoring 1011 of the rupture disk 101. The center of the plate 100 bulges downward and outward, forming the aforementioned rupture disk 101.

[0035] This embodiment also provides a battery, which includes a shell 200 and the above-mentioned battery cover structure. The shell 200 has a cavity 201 with a bottom opening. The plate body 100 is arranged at the bottom opening of the shell 200. The outer periphery of the plate body 100 is recessed downward to form an annular step groove 106. The step groove 106 is arranged around the circumference of the plate body 100. The bottom of the shell 200 is embedded in the step groove 106 and is fixedly connected to the plate body 100. The plate body 100 closes the bottom opening of the shell 200.

[0036] By providing the stepped groove 106 , the matching structure between the housing 200 and the plate 100 is simple, the process is also simple, and the plate 100 will not bulge unevenly due to stress concentration caused by the notch 1011 provided on the explosion-proof disk 101 .

[0037] The plate body 100 is provided with a step groove 106, and the bottom of the shell 200 is embedded in the step groove 106 for welding and fixing, thereby ensuring the direct sealing between the plate body 100 and the shell 200. The setting of the step groove 106 avoids damage to the battery cell inside the cavity 201 during the welding process.

[0038] In actual welding, welding can be performed on the outer periphery of the plate body 100, and welding can be performed in the entire circumferential direction, so that the direct connection between the plate body 100 and the shell 200 is more stable and has good sealing, and the cavity 201 of the shell 200 is completely closed; at the same time, welding on the circumferential side can also prevent welding slag from falling into the cavity 201, and can avoid the risk of the battery cell inside the shell 200 being welded through.

[0039] The bottom of the housing 200 has an annular bottom wall 104, which abuts the bottom of the stepped groove 106, thus making the fit between the housing 200 and the plate 100 more stable. The outer side of the stepped groove 106 is open, thus facilitating the fit between the housing 200 and the plate 100.

[0040] An inner docking wall 105 is formed inside the stepped groove 106 and arranged around the circumference of the plate body 100. The inner wall of the housing 200 abuts against the inner docking wall. Thus, after the bottom of the housing 200 is inserted into the stepped groove 106, the inner wall abuts against the inner docking wall 105, and the bottom wall 104 abuts against the bottom of the stepped groove 106, achieving multi-position docking. This makes the direct docking of the plate body 100 and the housing 200 more stable and more sealed.

[0041] The plate body 100 includes a flattened section 103 arranged in an annular pattern, surrounding the outer periphery of the mounting platform 102. The inner side of the flattened section 103 abuts against the outer periphery of the mounting platform 102, while a stepped groove 106 is formed on the outer side of the mounting platform 102. The plate body 100 is a unitary, integrally molded structure, with the aforementioned explosion-proof disk 101, mounting platform 102, and flattened section 103 formed directly in the mold. This is a simple and quick process, and the overall strength and performance of the plate body 100 are excellent, meeting user requirements.

[0042] This embodiment also provides an electrical device, which includes the above-mentioned battery.

[0043] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent replacements and improvements made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. A battery cover structure, characterized in that: The invention comprises an integrally formed plate body, wherein the plate body has an inwardly convex mounting platform for mounting the current collector, and the mounting platform is arranged around the circumference of the plate body.

2. The battery cover structure according to claim 1, characterized in that: The current collector is provided with a mounting surface adapted to the mounting platform.

3. The battery cover structure according to claim 1, characterized in that: The plate body is concavely arranged at a position corresponding to the mounting platform.

4. The battery cover structure according to any one of claims 1 to 3, characterized in that: The plate body has an explosion-proof sheet, on which notches are arranged, and the explosion-proof sheet is integrally formed with the plate body.

5. The battery cover structure according to claim 4, characterized in that: The explosion-proof disk is formed in the middle of the plate body, and the mounting platform surrounds the outer periphery of the explosion-proof disk.

6. A battery, characterized in that It comprises a shell and a battery cover plate structure as claimed in any one of claims 1 to 5, wherein the shell has a cavity with a bottom opening, and the plate body is arranged at the bottom opening; the outer periphery of the plate body has a downwardly recessed step groove, and the step groove is arranged around the circumference of the plate body, the bottom of the shell is embedded in the step groove and is fixedly connected to the plate body, and the plate body closes the bottom opening.

7. The battery according to claim 6, characterized in that The bottom of the housing has a bottom wall, and the bottom wall abuts against the bottom of the step groove.

8. The battery according to claim 6, characterized in that An inner side docking wall is formed on the inner side of the step groove, and the inner side docking wall is arranged around the circumference of the plate body; the inner side wall of the shell body abuts against the inner side wall docking wall.

9. The battery according to claim 6, characterized in that The cover plate has a flat section arranged in an annular shape, and the flat section surrounds the outer circumference of the mounting platform; the inner side of the flat section is butted against the outer circumference of the mounting platform, and the step groove is formed on the outer side of the mounting platform.

10. Electrical equipment, characterized in that: A battery comprising any one of claims 6 to 9.

Images