A cover structure of a power battery

Abstract

The utility model discloses a cover plate structure of a power battery, which belongs to the field of power batteries, and includes a pole, a substrate and a connecting piece; an upper plastic is arranged around the side of the pole; a substrate through hole is arranged in the substrate, and the bottom surface of the pole is fitted on one side of the substrate through hole of the substrate; the other side of the substrate is fitted with one side of the lower plastic, and the other side of the lower plastic is fitted with the connecting piece, a connecting protrusion is arranged on the connecting piece, and a lower plastic through hole is arranged on the lower plastic, and the connecting protrusion passes through the lower plastic through hole and the substrate through hole in sequence to contact and connect with the bottom surface of the pole, and a fixing column through hole is arranged on the upper plastic, the substrate, the lower plastic and the connecting piece, and the fixing column passes through the fixing column through hole. The utility model will change the fixing method of the cover plate, and the pole is directly fixed to the connecting piece by penetration welding, thereby reducing the thickness of the pole, achieving the purpose of reducing costs and improving energy density.

Description

Technical Field

[0001] The utility model relates to the field of power batteries, in particular to a cover plate structure of a power battery. Background Art

[0002] With the development of new energy, new energy vehicles are one of the trends in the development of future vehicles. As one of the core components of new energy vehicles, power batteries are the power source that provides the power source. Compared with traditional automobile fuel power, new energy vehicle power batteries are highly environmentally friendly. Power batteries use electrical energy, do not directly emit harmful substances, do not pollute the environment, and can effectively reduce air and noise pollution. The electric drive system is highly efficient and does not have energy loss like internal combustion engines. Therefore, it has good energy saving performance, can make full use of renewable energy, and reduce dependence on traditional petrochemical energy. The power battery adopts the most advanced architecture design, which can fully meet the requirements of the car for power, performance, etc., and can better adapt to different environments and usage requirements. The operating cost of new energy vehicle power batteries is significantly reduced.

[0003] In the conventional cover structure of power batteries, the upper plastic and the pole are separate. In the prior art, the cover is generally fixed by riveting or welding, which is costly and affects the final cost of the power battery. Utility Model Content

[0004] With regard to the above-mentioned problems existing in the prior art, the purpose of the present invention is to provide a cover plate structure of a power battery to solve the problems raised in the above-mentioned background technology.

[0005] In order to achieve the above purpose, the utility model provides the following technical solutions:

[0006] A cover plate structure of a power battery, comprising a pole, a base plate and a connecting piece;

[0007] The side of the pole is surrounded by plastic.

[0008] A substrate through hole is provided in the substrate, and the bottom surface of the pole is attached to one side of the substrate through hole of the substrate;

[0009] The other side of the substrate is fitted with one side of the lower plastic, and the other side of the lower plastic is fitted with the connecting piece;

[0010] A connecting protrusion is provided on the connecting piece, and a lower plastic through hole is provided on the lower plastic. The connecting protrusion passes through the lower plastic through hole and the substrate through hole in sequence to contact and connect with the bottom surface of the pole;

[0011] The upper plastic, the base plate, the lower plastic and the connecting sheet are all provided with fixing post through holes, and the fixing posts are arranged through the fixing post through holes.

[0012] As a further solution of the utility model: the upper plastic and the pole are integrally injection molded.

[0013] As a further solution of the utility model: a sealing ring is provided at the connection between the pole and the substrate.

[0014] As a further solution of the utility model: the bottom surface of the pole is fixedly connected to the top end of the connecting protrusion of the connecting piece by welding.

[0015] As a further solution of the utility model: a boss is arranged on the bottom surface of the pole, a connecting through hole is arranged on the top of the connecting protrusion of the connecting piece, and the boss on the bottom surface of the pole and the connecting through hole on the top of the connecting protrusion of the connecting piece are matched and connected with each other.

[0016] As a further solution of the present invention: the connecting piece is L-shaped.

[0017] As a further solution of the present invention: the corners of the L-shaped connecting piece are provided with rounded corners.

[0018] As a further solution of the utility model: the number of the fixing columns is 1-10, and the fixing columns and the fixing column through holes are arranged in one-to-one correspondence.

[0019] As a further solution of the utility model: the material of the fixing column is ceramic or mica sheet.

[0020] As a further solution of the utility model: the shape of the pole is square, round or polygonal, and the pole includes a positive pole and a negative pole. The positive pole is made of aluminum, and the upper layer of the negative pole is aluminum and the lower layer is copper.

[0021] Compared with the prior art, the beneficial effects of the utility model are:

[0022] The utility model changes the fixing method of the cover plate, and fixes the pole directly to the connecting piece by penetration welding, thereby reducing the thickness of the pole, achieving the purpose of reducing cost and improving energy density. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 The present invention is a schematic structural diagram of a cover plate structure of a power battery disclosed in an embodiment.

[0024] Figure 2 The present invention is a schematic diagram of a pole installation structure of a cover plate structure of a power battery disclosed in an embodiment.

[0025] Figure 3 The present invention is a schematic diagram of a pole installation structure of a second embodiment of a cover plate structure of a power battery disclosed in an embodiment.

[0026] The reference numerals in the figure are: 1, upper plastic; 2, pole; 3, fixing column; 4, sealing ring; 5, base plate; 6, lower plastic; 7, connecting piece. DETAILED DESCRIPTION

[0027] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model; it is obvious that the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0028] In the description of the present utility model, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "provided with", "connected", and "connected" should be understood in a broad sense; for example, it can be a fixed connection, a detachable connection, or an integral connection, a mechanical connection, or an electrical connection, a direct connection, or an indirect connection through an intermediate medium, or the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present utility model can be understood according to specific circumstances.

[0029] See also Figure 1 , a cover plate structure of a power battery, comprising a pole 2, a base plate 5 and a connecting piece 7;

[0030] An upper plastic 1 is provided around the side of the pole 2, and the upper plastic 1 and the pole 2 are integrally injection molded; the upper plastic 1 is beneficial to protecting the side wall of the pole 2, avoiding leakage, ensuring the smoothness of the circuit, facilitating the subsequent power supply of the power battery, and increasing safety.

[0031] A substrate through hole is provided in the substrate 5, and the bottom surface of the pole 2 is arranged on one side of the substrate through hole of the substrate 5; the substrate 5 is fixed to facilitate electrical connection;

[0032] A sealing ring 4 is provided at the connection between the pole 2 and the substrate 5, which ensures the sealing of the connection between the pole 2 and the substrate 5, prevents external moisture, dust, etc. from affecting the stability of the subsequent connection between the pole 2 and the connecting piece 7, ensures the smoothness of the circuit, facilitates the subsequent power supply of the power battery, and increases safety.

[0033] The other side of the substrate 5 is fitted with one side of the lower plastic 6, and the other side of the lower plastic 6 is fitted with the connecting sheet 7;

[0034] A connecting protrusion is provided on the connecting piece 7, and a lower plastic through hole is provided on the lower plastic 6. The connecting protrusion passes through the lower plastic through hole and the substrate through hole in sequence to contact and connect with the bottom surface of the pole 2, thereby ensuring the stability of the connection between the pole 2 and the connecting piece 7, increasing safety, and facilitating the smooth power supply of the subsequent power battery.

[0035] The shape of the pole 2 is square, round or polygonal. The pole 2 includes a positive pole and a negative pole. The positive pole is made of aluminum, and the upper layer of the negative pole is aluminum and the lower layer is copper.

[0036] The upper plastic 1, the substrate 5, the lower plastic 6 and the connecting piece 7 are all provided with fixing column through holes, and the fixing column 3 is arranged through the fixing column through holes. The fixing column conveniently ensures the stable fixation between the upper plastic 1, the substrate 5, the lower plastic 6 and the connecting piece 7, avoids the misalignment between the upper plastic 1, the substrate 5, the lower plastic 6 and the connecting piece 7, facilitates the stability of subsequent connection, and increases safety.

[0037] The number of the fixing columns 3 is 1-10, and the fixing columns 3 and the fixing column through holes are arranged one by one, thereby increasing the stability between the various components, facilitating the use of the device, and ensuring safety.

[0038] The material of the fixing column 3 is ceramic or mica sheet, which increases the torque of the pole 2 and ensures safety.

[0039] The connecting piece 7 is L-shaped, which is convenient for electrical connection. The corners of the L-shaped connecting piece 7 are rounded to avoid unstable connection caused by collision and ensure smooth power supply of the subsequent power battery.

[0040] Embodiment 1, as Figure 2 As shown, as described above, the bottom surface of the pole 2 is welded and fixedly connected to the top of the connecting protrusion of the connecting piece 7, which ensures the stability of the connection and increases the safety.

[0041] Embodiment 2, as Figure 3 As shown, as described above, a boss is provided on the bottom surface of the pole 2, and a connecting through hole is provided on the top of the connecting protrusion of the connecting piece 7. The boss on the bottom surface of the pole 2 and the connecting through hole on the top of the connecting protrusion of the connecting piece 7 cooperate with each other to ensure the stability of the connection and increase safety.

[0042] The utility model changes the fixing method of the cover plate, and fixes the pole directly to the connecting piece by penetration welding, thereby reducing the thickness of the pole, achieving the purpose of reducing cost and improving energy density.

[0043] It is obvious to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above, and that the present invention can be implemented in other specific forms without departing from the spirit or basic features of the present invention. Therefore, no matter from which point of view, the embodiments should be regarded as exemplary and non-restrictive. The scope of the present invention is defined by the appended claims rather than the above description, and it is intended that all changes falling within the meaning and scope of the equivalent elements of the claims are included in the present invention, and any figure mark in the claims should not be regarded as limiting the claims involved.

[0044] In addition, it should be understood that although the present specification is described according to implementation modes, not every implementation mode contains only one independent technical solution. This description of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment may also be appropriately combined to form other implementation modes that can be understood by those skilled in the art.

Claims

1. A cover plate structure of a power battery, characterized in that: It comprises a pole (2), a base plate (5) and a connecting piece (7); an upper plastic (1) is provided around the side edge of the pole (2); A substrate through hole is provided in the substrate (5), and the bottom surface of the pole (2) is arranged to fit on one side of the substrate through hole of the substrate (5); The other side of the base plate (5) is fitted to one side of the lower plastic (6), and the other side of the lower plastic (6) is fitted to the connecting sheet (7); A connecting protrusion is provided on the connecting piece (7), a lower plastic through hole is provided on the lower plastic (6), and the connecting protrusion passes through the lower plastic through hole and the substrate through hole in sequence to contact and connect with the bottom surface of the pole (2); The upper plastic (1), the base plate (5), the lower plastic (6) and the connecting sheet (7) are all provided with a fixing column through hole (11), and the fixing column (3) is arranged through the fixing column through hole (11).

2. A cover plate structure of a power battery according to claim 1, characterized in that: The upper plastic (1) and the pole (2) are integrally injection-molded.

3. A cover plate structure of a power battery according to claim 2, characterized in that: A sealing ring (4) is provided at the connection between the pole (2) and the base plate (5).

4. A cover plate structure of a power battery according to claim 3, characterized in that: The bottom surface of the pole (2) is fixedly connected to the top end of the connecting protrusion of the connecting piece (7) by welding.

5. The cover plate structure of a power battery according to claim 3, characterized in that: The bottom surface of the pole (2) is provided with a boss, the top of the connecting protrusion of the connecting piece (7) is provided with a connecting through hole, and the boss on the bottom surface of the pole (2) and the connecting through hole at the top of the connecting protrusion of the connecting piece (7) are matched and connected to each other.

6. A cover plate structure of a power battery according to claim 4 or 5, characterized in that: The connecting piece (7) is L-shaped.

7. A cover plate structure of a power battery according to claim 6, characterized in that: The corners of the L-shaped connecting piece (7) are provided with rounded corners.

8. A cover plate structure of a power battery according to claim 7, characterized in that: The number of the fixing columns (3) is 1-10, and the fixing columns (3) and the fixing column through holes (11) are arranged in a one-to-one correspondence.

9. A cover plate structure of a power battery according to claim 8, characterized in that: The material of the fixing column (3) is ceramic or mica sheet.

10. A cover plate structure of a power battery according to claim 9, characterized in that: The pole (2) is in the shape of a square, a circle or a polygon. The pole (2) comprises a positive pole and a negative pole. The positive pole is made of aluminum. The negative pole has an upper layer of aluminum and a lower layer of copper.

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