Lower plastic, single battery and electric equipment

Abstract

The utility model belongs to the technical field of batteries, and discloses a lower plastic, a single battery and electric equipment. The lower plastic comprises a lower plastic body and two connecting parts correspondingly arranged at the two ends of the lower plastic body in the first direction, the connecting parts are used for abutting against the circumferential inner wall of the battery shell, the connecting parts are provided with first concave parts, and at least one first concave part is provided with a plurality of reinforcing ribs; at least two reinforcing ribs are arranged in a crossed mode. According to the lower plastic, the mechanical strength of the lower plastic part can be improved, deformation is reduced, the battery cover plate is convenient to assemble, and the qualified rate of a finally formed single battery is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of batteries, in particular to a lower plastic, a single battery and electrical equipment. Background Art

[0002] The battery cover is a key component that seals the shell with the battery cell, outputs the internal energy, and ensures the safety of the battery cell. It has strict requirements on the sealing of the components, the pressure relief pressure of the safety valve, the electrical performance, the size and appearance. The battery cover is composed of a plain aluminum sheet, a pole, a lower plastic and a sealing ring. The lower plastic in the existing technology is in the form of a sheet, which is easy to deform and affects the dimensional accuracy. When the battery cover is installed, the deformation of the lower plastic will cause positioning errors, resulting in the improper assembly of components such as the sealing ring, causing the battery cover to warp and deform, affecting the production quality of the battery cover. At the same time, the deformed lower plastic will also cause jamming when assembling the battery cover, affecting the assembly efficiency, which will lead to an increase in the unit manufacturing time and manufacturing cost of the battery cover.

[0003] Therefore, there is an urgent need to provide a new type of lower plastic, single battery and electrical equipment to solve the above technical problems in the prior art. Utility Model Content

[0004] The purpose of the utility model is to provide a lower plastic, which can improve the mechanical strength of the lower plastic part, reduce the occurrence of deformation, facilitate the assembly of the battery cover, and improve the qualified rate of the finally formed single battery.

[0005] To achieve this purpose, the present invention adopts the following technical solutions:

[0006] The lower plastic includes a lower plastic body and two connecting parts correspondingly arranged at both ends of the lower plastic body along the first direction. The connecting parts are used to abut against the circumferential inner wall of the battery shell. The connecting parts are provided with a first recess. At least one of the first recesses is provided with a plurality of reinforcing ribs, and at least two of the reinforcing ribs are intersectingly arranged.

[0007] Optionally, the lower plastic body is provided with a rivet hole, and the rivet hole is used for passing the pole.

[0008] Optionally, the bottom wall of the lower plastic body is provided with two second protrusions, the two second protrusions are provided on both sides of the riveting hole along the first direction, and the second protrusions are used to be inserted into the matching hole of the pole.

[0009] Optionally, the bottom of the connecting portion protrudes downwardly from the bottom wall of the lower plastic body in a vertical direction, and at least a portion of the pole is sandwiched between the two connecting portions.

[0010] Optionally, a distance between the two connecting portions along the first direction is not less than a size of the pole along the first direction.

[0011] Optionally, the top wall of the lower plastic body is provided with an anti-rotation column, and the anti-rotation column can be inserted into the anti-rotation hole of the bottom wall of the cover body.

[0012] Optionally, two of the above-mentioned reinforcing ribs are provided, and the two reinforcing ribs are perpendicular to each other.

[0013] Optionally, the bottom wall of the first recess is provided with a plurality of guide holes.

[0014] Another object of the present invention is to provide a single cell battery, which includes the cover plate assembly described in any of the above solutions.

[0015] Another object of the present invention is to provide an electrical device comprising the single battery as described in the above solution.

[0016] Beneficial effects:

[0017] The lower plastic in the utility model is provided with a connecting portion along the first direction on the lower plastic body, and the connecting portion can abut against the circumferential inner wall of the battery shell to achieve fixation of the lower plastic inside the battery shell. The connecting portion is provided with a first recess, which reduces the injection molding amount of the connecting portion and reduces the production cost. In addition, a plurality of reinforcing ribs are provided in the first recess to strengthen the mechanical strength of the first recess, and at least two reinforcing ribs are intersectingly provided, which can further enhance the mechanical strength of the first recess, avoid the strength reduction caused by the provision of the first recess at both ends of the lower plastic, avoid deformation of the two ends of the lower plastic during installation, improve the accuracy of dimensional measurement and the convenience of subsequent installation, thereby improving the assembly efficiency and yield rate of the battery cover using the lower plastic. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is an exploded view of the cover plate assembly provided in a specific embodiment of the present utility model.

[0019] In the picture:

[0020] 100, lower plastic body; 110, connecting portion; 111, first recess; 112, reinforcing rib; 113, diversion hole; 120, rivet hole; 130, second protrusion; 140, anti-rotation column;

[0021] 200, cover plate body; 210, upper pole; 220, lower pole; 221, matching hole. DETAILED DESCRIPTION

[0022] The present invention will be further described in detail below with reference to the accompanying drawings and examples. It should be understood that the specific embodiments described herein are intended only to illustrate the present invention and are not intended to limit the present invention. It should also be noted that, for ease of description, the accompanying drawings only illustrate portions relevant to the present invention, not all of its components.

[0023] In the description of this utility model, unless otherwise specified or limited, the terms "connected," "connect," and "fixed" should be understood in a broad sense. For example, they can refer to fixed connection, detachable connection, or integration; mechanical connection or electrical connection; direct connection or indirect connection through an intermediate medium; internal communication between two components or interaction between two components. Those skilled in the art will understand the specific meanings of the above terms in this utility model based on the specific circumstances.

[0024] In the present invention, unless otherwise expressly specified or limited, a first feature being "above" or "below" a second feature may include the first and second features being in direct contact, or may include the first and second features being in contact not directly but through another feature between them. Moreover, a first feature being "above," "above," and "above" a second feature may include the first feature being directly above or obliquely above the second feature, or may simply mean that the first feature is higher in level than the second feature. A first feature being "below," "below," and "below" a second feature may include the first feature being directly below or obliquely below the second feature, or may simply mean that the first feature is lower in level than the second feature.

[0025] In the description of this embodiment, the terms "upper," "lower," "right," and other orientations or positional relationships are based on the orientations or positional relationships shown in the accompanying drawings and are intended solely for ease of description and simplified operation. They do not indicate or imply that the devices or components referred to must have a specific orientation, be constructed, or operate in a specific orientation. Therefore, they should not be construed as limitations on the present invention. Furthermore, the terms "first" and "second" are used solely for descriptive purposes and have no special meaning.

[0026] The first direction described in this embodiment is Figure 1 The X direction shown in is the length direction of the lower plastic.

[0027] In this embodiment, the lower plastic abuts against the bottom wall of the cover body 200, and the pole is composed of an upper pole 210 and a lower pole 220 riveted together. The upper pole 210 is provided through the cover body 200, and the lower pole 220 abuts against the bottom wall of the lower plastic, thereby fixing the lower plastic to the cover body 200 and realizing a fixed connection between the upper pole 210 and the lower pole 220 and the cover body 200.

[0028] like Figure 1As shown, in this embodiment, the lower plastic includes a lower plastic body 100 and two connecting portions 110 correspondingly arranged at both ends of the lower plastic body 100 along the first direction. The connecting portions 110 are used to abut against the circumferential inner wall of the battery shell. The connecting portions 110 are provided with first recesses 111. At least one of the first recesses 111 is provided with a plurality of reinforcing ribs 112, and at least two of the reinforcing ribs 112 are intersectingly arranged.

[0029] The lower plastic in this embodiment is fixed inside the battery shell by providing a connecting portion 110 on the lower plastic body 100 along the first direction. The connecting portion 110 can abut against the circumferential inner wall of the battery shell. The connecting portion 110 is provided with a first recess 111, which reduces the injection molding amount of the connecting portion 110 and reduces the production cost. A plurality of reinforcing ribs 112 are provided in the first recess 111 to strengthen the mechanical strength of the first recess 111. At least two reinforcing ribs 112 are intersectingly provided, which can further enhance the mechanical strength of the first recess 111, avoid the strength reduction of the two ends of the lower plastic due to the provision of the first recess 111, avoid deformation of the two ends of the lower plastic during installation, improve the accuracy of dimensional measurement and the convenience of subsequent installation, thereby improving the assembly efficiency and yield rate of the battery cover using the lower plastic.

[0030] Furthermore, the lower plastic body 100 is provided with a rivet hole 120 for receiving a pole. Specifically, the upper pole 210 is received in the rivet hole 120 , and the lower pole 220 is riveted to the upper pole 210 to secure the lower plastic to the cover body 200 .

[0031] In this embodiment, the bottom wall of the lower plastic body 100 is provided with two second protrusions 130, one on either side of the rivet hole 120 along the first direction. The second protrusions 130 are configured to be inserted into the mating holes 221 of the terminal. Specifically, the mating holes 221 are provided in the lower terminal 220 and are fixedly engaged with the second protrusions, thereby securing the lower terminal 220 to the lower plastic body 100 and preventing the lower terminal 220 from rotating relative to the lower plastic body 100.

[0032] Optionally, the bottom of the connecting portion 110 protrudes vertically downward from the bottom wall of the lower plastic body 100, and at least a portion of the terminal is sandwiched between the two connecting portions 110. In this embodiment, the lower terminal 220 of the terminal is sandwiched between the two connecting portions 110. Using the two connecting portions 110 to clamp and secure the lower terminal 220 of the terminal further prevents the lower terminal 220 from rotating, thereby improving the securement of the terminal to the lower plastic and the cover body 200.

[0033] In this embodiment, the distance between the two connecting portions 110 along the first direction is not less than the size of the pole along the first direction. This arrangement facilitates the fitting and fixing of the lower pole 220 of the pole with the lower plastic, facilitating assembly of the cover assembly.

[0034] Specifically, the top wall of the lower plastic body 100 is provided with an anti-rotation post 140, which can be inserted into an anti-rotation hole in the bottom wall of the cover body 200. The anti-rotation post 140 cooperates with the anti-rotation hole to prevent the lower plastic from rotating relative to the cover body 200 after installation, thereby improving the installation stability of the lower plastic on the cover body 200.

[0035] Furthermore, two reinforcing ribs 112 are provided, and the two reinforcing ribs 112 are perpendicular to each other. The two mutually perpendicular reinforcing ribs 112 can provide structural strength and support to the first recess 111 from different directions. The two reinforcing ribs 112 can also rely on each other to distribute the force, thereby further improving the compressive strength and deformation resistance of the first recess 111.

[0036] Optionally, the bottom wall of the first recess 111 is provided with a plurality of guide holes 113. The guide holes 113 are provided to provide a channel for the electrolyte to flow through the lower plastic and into the battery housing, thereby realizing the injection of the single battery, increasing the injection speed of the electrolyte and thus improving the manufacturing efficiency of the single battery.

[0037] Another object of the present invention is to provide a single cell battery comprising the cover assembly described in any of the above-mentioned embodiments. Specifically, the single cell battery may be a nickel-metal hydride battery, a nickel-cadmium battery, a lead-acid (or lead-acid) battery, a lithium-ion battery, a polymer lithium-ion battery, or the like. Alternatively, the single cell battery may be a lithium-ion primary battery, a lithium-sulfur battery, a sodium-lithium-ion battery, a sodium-ion battery, or a magnesium-ion battery, etc., which will not be further described herein.

[0038] Another object of the present invention is to provide an electrical device comprising the single battery as described in the above solution.

[0039] This embodiment further provides a single cell battery, which includes the cover plate assembly described in any of the above solutions. The single cell battery has the beneficial effects of the lower plastic described in any of the above solutions, which will not be described in detail here.

[0040] This embodiment further provides an electrical device comprising the single battery described in the above embodiment. The electrical device may be an electric bicycle, an electric vehicle, a hybrid vehicle, a ship, an energy storage device, etc., as long as it uses electricity as an energy source, and will not be described in detail here.

[0041] Obviously, the above-described embodiments of the present invention are merely examples for the purpose of clearly illustrating the present invention and are not intended to limit the manner in which the present invention is to be implemented. A person skilled in the art would be able to make various obvious changes, readjustments, and substitutions without departing from the scope of protection of the present invention. It is not necessary and impossible to enumerate all embodiments here. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present invention shall be included within the scope of protection of the claims of the present invention.

Claims

1. Lower plastic, characterized in that, The battery pack comprises a lower plastic body (100) and two connecting portions (110) correspondingly arranged at both ends of the lower plastic body (100) along a first direction, wherein the connecting portions (110) are used to abut against the circumferential inner wall of the battery housing, and the connecting portions (110) are provided with a first recess (111), and at least one of the first recesses (111) is provided with a plurality of reinforcing ribs (112), and at least two of the reinforcing ribs (112) are arranged to intersect.

2. The lower plastic according to claim 1, characterized in that: The lower plastic body (100) is provided with a rivet hole (120), and the rivet hole (120) is used for passing a pole.

3. The lower plastic according to claim 2, characterized in that: The bottom wall of the lower plastic body (100) is provided with two second protrusions (130), and the two second protrusions (130) are respectively arranged on both sides of the rivet hole (120) along the first direction, and the second protrusions (130) are used to be inserted into the matching hole (221) of the pole.

4. The lower plastic according to claim 3, characterized in that: The bottom of the connecting portion (110) protrudes downwardly from the bottom wall of the lower plastic body (100) in the vertical direction, and at least a portion of the pole is sandwiched between the two connecting portions (110).

5. The lower plastic according to claim 4, characterized in that: The distance between the two connecting portions (110) along the first direction is not less than the size of the pole along the first direction.

6. The lower plastic according to any one of claims 1 to 5, characterized in that: The top wall of the lower plastic body (100) is provided with an anti-rotation column (140), and the anti-rotation column (140) can be plugged into the anti-rotation hole on the bottom wall of the cover body (200).

7. The lower plastic according to any one of claims 1 to 5, characterized in that: Two reinforcing ribs (112) are provided, and the two reinforcing ribs (112) are perpendicular to each other.

8. The lower plastic according to any one of claims 1 to 5, characterized in that: The bottom wall of the first recess (111) is provided with a plurality of guide holes (113).

9. A single cell battery, characterized in that: The invention comprises the lower plastic as described in any one of claims 1-8.

10. Electrical equipment, characterized in that: The invention comprises the single cell battery as claimed in claim 9.

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