Pole structure and cover plate structure

Abstract

The utility model provides a pole structure and a cover plate structure, and belongs to the field of new energy batteries. The pole structure comprises a pole, a pole mounting groove and upper plastic, the pole is wrapped with the upper plastic, a plurality of bosses protruding in the direction away from the pole are arranged on the outer side of the upper plastic, and grooves matched with the bosses are formed in the inner side of the pole mounting groove. By adopting the pole structure and the cover plate structure provided by the embodiment of the utility model, the problem of poorer mounting stability of the pole in the prior art can be solved.

Description

Technical Field

[0001] The utility model relates to the field of new energy batteries, in particular to a pole structure and a cover plate structure. Background Art

[0002] With the rapid development of new energy batteries, the requirements for battery stability and safety performance are becoming increasingly stringent. Within this stability, the connection between the battery terminal and the cell is particularly important. The stability of the terminal installation directly determines whether the battery cell can exchange energy with external electrical devices, so research on the stability of the terminal installation is extremely important.

[0003] In the prior art, poles are typically mounted on a cover plate through a pole mounting slot, with an upper plastic insert placed between the pole and the mounting slot for insulation. During installation, the upper plastic insert wraps around the sidewalls of the pole and secures it to the pole. A protrusion is provided on the outer wall of the upper plastic insert, while a groove matching the protrusion is provided within the mounting slot. This allows the rubber insert to secure the pole to the mounting slot horizontally and provide a certain degree of torsional strength.

[0004] The pole structure in the prior art usually has a small protrusion or only one protrusion, resulting in low torsional strength during pole installation and poor pole installation stability. During use, it is easy to cause poor contact between the pole and the battery cell, affecting the normal use of the battery. Utility Model Content

[0005] The present invention provides a pole structure and a cover plate structure that can solve the problem of poor pole installation stability in the prior art. The technical solution is as follows:

[0006] In a first aspect, a pole structure includes: a pole, a pole mounting groove, and an upper plastic.

[0007] The upper plastic is wrapped around the outside of the pole, and a plurality of bosses protruding away from the pole are provided on the outer side of the upper plastic. A groove matching the bosses is provided on the inner side of the pole mounting groove.

[0008] Optionally, the pole is a cylindrical structure, and the plurality of bosses are evenly spaced along the circumference of the pole.

[0009] Optionally, a flange is provided on the top of the pole mounting groove, the groove is provided on the flange, and the boss is provided on the top of the upper plastic.

[0010] Optionally, a pole mounting hole is provided at the bottom of the pole mounting groove, and a sealing ring is provided between the pole mounting hole and the pole.

[0011] Optionally, the pole includes a positive pole and a negative pole, the positive pole is an integrally formed aluminum metal part, the negative pole includes a copper plate and an aluminum pole welded to the copper plate, a welding groove is provided on the top of the copper plate, and a welding boss matching the welding groove is provided on the bottom of the aluminum pole.

[0012] In the second aspect, a cover plate structure includes the aforementioned pole, and also includes a cover plate, a positive pole mark and a negative pole mark. There are two pole mounting grooves, which are arranged at intervals on the cover plate. The positive pole mark and the negative pole mark are respectively arranged on one side of the two pole mounting grooves.

[0013] Optionally, a liquid injection hole is provided on the cover plate.

[0014] Optionally, an explosion-proof valve is provided on the cover plate.

[0015] The beneficial effects of the technical solution provided by the embodiment of the utility model include at least:

[0016] The embodiment of the present utility model provides a pole structure and a cover plate structure, in which a plurality of bosses are provided on the upper plastic, and a plurality of grooves matching the bosses are provided inside the pole mounting groove. The bosses and the grooves cooperate to limit the horizontal rotation direction of the pole, making it difficult for the pole to rotate after installation, so that the pole can be firmly set on the battery cover plate after installation, thereby increasing the stability of the pole installation and effectively solving the problem of poor pole installation stability in the prior art. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the following briefly introduces the drawings required for use in the description of the embodiments. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0018] Figure 1 This is a schematic diagram of the overall structure of the cover provided by an embodiment of the present utility model;

[0019] Figure 2 This is a schematic diagram of a front cross-section of a cover plate provided by an embodiment of the present utility model;

[0020] Figure 3 The embodiment of the present utility model provides Figure 2 A magnified schematic diagram of point A;

[0021] Figure 4 The embodiment of the present utility model provides Figure 2 An enlarged schematic diagram of point B;

[0022] Figure 5 It is a schematic cross-sectional view of the pole mounting slot structure on the positive pole side provided by an embodiment of the present utility model.

[0023] In the figure: 1-pole; 11-positive pole; 12-negative pole; 121-copper plate; 122-aluminum pole; 123-welding groove; 124-welding boss; 2-pole mounting groove; 21-groove; 22-flanged edge; 23-pole mounting hole; 3-upper plastic; 31-boss; 4-sealing ring; 5-cover; 61-positive pole mark; 62-negative pole mark; 7-liquid filling hole; 8-explosion-proof valve. DETAILED DESCRIPTION

[0024] In order to make the purpose, technical solutions and advantages of the present invention more clear, the embodiments of the present invention will be further described in detail below with reference to the accompanying drawings.

[0025] Figure 1 This is a schematic diagram of the overall structure of the cover provided by an embodiment of the present utility model; Figure 2 This is a schematic diagram of a front cross-section of a cover provided by an embodiment of the present utility model; Figure 3 The embodiment of the present utility model provides Figure 2 A magnified schematic diagram of point A; Figure 4 The embodiment of the present utility model provides Figure 2 A magnified schematic diagram of point B; Figure 5 This is a cross-sectional diagram of the electrode mounting slot structure on the positive electrode side provided by the embodiment of the present invention. Figures 1 to 5 The pole structure shown includes: a pole 1, a pole mounting groove 2 and an upper plastic 3. The upper plastic 3 is wrapped around the outside of the pole 1. The outer side of the upper plastic 3 is provided with multiple bosses 31 protruding away from the pole 1. The inner side of the pole mounting groove 2 is provided with a groove 21 matching the bosses 31.

[0026] For example, in an embodiment of the present invention, a plurality of bosses 31 are provided on the outer side of the upper plastic 3, and a plurality of grooves 21 matching the bosses 31 are provided on the inner side of the pole mounting groove 2. By cooperating with the bosses 31 and the grooves 21, the pole 1 is limited in the horizontal rotation direction. Compared with the traditional technology of limiting by only setting one or a small protrusion, the embodiment of the present invention greatly improves the torsional strength of the pole 1 in the horizontal rotation direction by setting a plurality of bosses 31, thereby enhancing the torsional performance of the pole 1 and making the pole 1 more stably arranged on the battery cover, so that it can be more stably connected to the battery cell, thereby improving the stability of the pole structure.

[0027] An embodiment of the present invention provides a pole structure, in which a plurality of bosses 31 are provided on the upper plastic 3, and a plurality of grooves 21 matching the bosses 31 are provided inside the pole mounting groove 2. The bosses 31 and the grooves 21 cooperate to limit the horizontal rotation direction of the pole 1, so that the pole 1 is difficult to rotate after installation, so that the pole 1 can be firmly set on the battery cover after installation, thereby increasing the stability of the installation of the pole 1 and effectively solving the problem of poor pole installation stability in the prior art.

[0028] Optionally, the pole 1 is a cylindrical structure, and the plurality of bosses 31 are evenly spaced along the circumference of the pole 1 .

[0029] For example, in an embodiment of the present invention, multiple bosses 31 are evenly arranged along the circumference of the pole 1, which can provide more stable torsional strength when the pole 1 is rotated by external force, so that the pole 1 is more stably arranged in the pole mounting groove 2, thereby further improving the stability of the pole structure.

[0030] Optionally, a flange 22 is provided on the top of the pole mounting groove 2 , the groove 21 is provided on the flange 22 , and the boss 31 is provided on the top of the upper plastic 3 .

[0031] For example, in an embodiment of the present invention, in the initial state of the pole mounting slot 2, the flange 22 is vertically upward. After the upper plastic 3 and the pole 1 are placed in the pole mounting slot 2 for installation, the flange 22 is bent toward the inside of the slot, so that the flange 22 changes from a vertical state to a horizontal state, and cooperates with the boss 31 located at the top of the upper plastic 3 to form a snap-fit ​​structure. By providing the flange 22, after the pole 1 is installed, the pole mounting slot 2 can also limit the pole 1 in the vertical direction, thereby preventing the pole 1 from moving in the vertical direction and maintaining a tight connection between the pole 1 and the battery cell at the bottom, thereby further improving the stability of the pole structure.

[0032] Optionally, a pole mounting hole 23 is provided at the bottom of the pole mounting groove 2 , and a sealing ring 4 is provided between the pole mounting hole 23 and the pole 1 .

[0033] For example, in an embodiment of the present invention, by providing a sealing ring 4, the insulation between the pole 1 and the pole mounting groove 2 can be ensured, thereby reducing the possibility of leakage of the pole 1 through the battery cover structure, thereby improving the safety performance of the pole structure.

[0034] Optionally, the electrode 1 includes a positive electrode 11 and a negative electrode 12, the positive electrode 11 is an integrally formed aluminum metal part, the negative electrode 12 includes a copper plate 121 and an aluminum column 122 welded to the copper plate, a welding groove 123 is provided on the top of the copper plate 121, and a welding boss 124 matching the welding groove is provided on the bottom of the aluminum column.

[0035] For example, in the embodiment of the present invention, to avoid electrochemical reactions with the electrolyte inside the battery cell, the bottom of the negative electrode column 12 is made of a copper plate 121. However, to reduce production costs, the negative electrode column 12 is not made entirely of copper. Instead, an aluminum column 122 is provided on the upper portion of the negative electrode column 12. The aluminum column has strong welding properties, which further improves the welding stability of the present electrode structure. By providing and welding grooves 123 and welding bosses 124, it is possible to facilitate positioning and welding of the copper plate 121 and the aluminum column 122, thereby improving the ease of operation of the present electrode structure.

[0036] A cover plate structure includes the aforementioned pole, and also includes a cover plate 5, a positive pole identifier 61 and a negative pole identifier 62. Two pole mounting slots 2 are provided, which are arranged at intervals on the cover plate 5. The positive pole identifier 61 and the negative pole identifier 62 are respectively arranged on one side of the two pole mounting slots 2.

[0037] For example, in an embodiment of the present invention, a positive pole identification 61 is provided on one side of the pole mounting slot 2 where the positive pole 11 is installed, and a negative pole identification 62 is provided on one side of the pole mounting slot 2 where the negative pole 12 is installed. By providing the positive pole identification 61 and the negative pole identification 62, it is convenient to identify the positive and negative poles after the positive pole 11 and the negative pole 12 are installed, thereby preventing wiring errors from occurring during subsequent installation, thereby improving the operational convenience of the cover structure.

[0038] Optionally, a liquid injection hole 7 is provided on the cover plate 5 .

[0039] For example, in an embodiment of the present invention, after the cover plate 5 and the battery cell are assembled, a closed space is formed. By providing an injection hole 7 on the cover plate 5, it is convenient to inject electrolyte into the battery after the cover plate 5 is installed. After the injection is completed, the injection hole 7 is sealed to form a closed space inside the battery again. By providing the injection hole 7, the operational convenience of the cover plate structure is further improved.

[0040] Optionally, an explosion-proof valve 8 is provided on the cover plate 5 .

[0041] For example, in an embodiment of the present invention, an explosion-proof valve 8 is provided. The fundamental cause of thermal runaway in the battery cell is the accumulation of heat due to the exothermic side reaction within the battery cell. The rate of heat exchange from the battery cell to the outside is less than the rate of heat accumulation, causing the temperature to continue to rise until it reaches the ignition point, causing combustion and explosion. To prevent thermal runaway accidents and avoid an imbalance in the internal and external pressures of the battery structure, and considering that lithium batteries will instantly produce a large amount of toxic gases when they catch fire, timely and targeted pressure relief and discharge of the gases are required, the explosion-proof valve 8 can achieve the requirements of maintaining the internal and external pressure balance of the battery structure and the targeted release of gases, serving as a passive safety protection measure for the battery system to prevent thermal runaway. By providing the explosion-proof valve 8, the safety performance of the cover plate structure is improved.

[0042] Unless otherwise defined, the technical or scientific terms used herein shall have the ordinary meaning understood by persons of ordinary skill in the field to which the present invention belongs. The terms "first", "second" and similar words used in the specification and claims of the present invention do not indicate any order, quantity or importance, but are only used to distinguish different components. Similarly, terms such as "a" or "an" do not indicate a quantity limitation, but rather indicate the presence of at least one. Terms such as "include" or "comprising" mean that the elements or objects appearing before "include" or "comprising" include the elements or objects listed after "include" or "comprising" and their equivalents, and do not exclude other elements or objects. Terms such as "connected" or "connected" are not limited to physical or mechanical connections, but may include electrical connections, whether direct or indirect. Terms such as "upper", "lower", "left", and "right" are only used to indicate relative positional relationships. When the absolute position of the described object changes, the relative positional relationship may also change accordingly.

[0043] The above description is only an optional embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent replacements, improvements, etc. 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 pole structure, characterized in that: include: Pole (1), pole mounting groove (2) and upper plastic (3), The upper plastic (3) is wrapped around the outside of the pole (1), and a plurality of bosses (31) protruding in a direction away from the pole (1) are provided on the outside of the upper plastic (3), and a groove (21) matching the bosses (31) is provided on the inside of the pole mounting groove (2).

2. The pole structure according to claim 1, characterized in that: The pole (1) is a cylindrical structure, and a plurality of bosses (31) are evenly spaced and arranged along the circumference of the pole (1).

3. The pole structure according to claim 1, characterized in that: The top of the pole mounting groove (2) is provided with a flange (22), the groove (21) is provided on the flange (22), and the boss (31) is provided on the top of the upper plastic (3).

4. The pole structure according to claim 1, characterized in that: A pole mounting hole (23) is provided at the bottom of the pole mounting groove (2), and a sealing ring (4) is provided between the pole mounting hole (23) and the pole (1).

5. The pole structure according to claim 1, characterized in that: The pole (1) comprises a positive pole (11) and a negative pole (12), wherein the positive pole (11) is an integrally formed aluminum metal part, and the negative pole (12) comprises a copper plate (121) and an aluminum pole (122) welded to the copper plate, wherein a welding groove (123) is provided on the top of the copper plate (121), and a welding boss (124) matching the welding groove is provided on the bottom of the aluminum pole.

6. A cover plate structure, comprising a pole structure according to any one of claims 1 to 5, characterized in that: It also includes a cover plate (5), a positive pole identifier (61) and a negative pole identifier (62); two pole mounting slots (2) are provided and are spaced apart on the cover plate (5); the positive pole identifier (61) and the negative pole identifier (62) are respectively provided on one side of the two pole mounting slots (2).

7. The cover plate structure according to claim 6, characterized in that: The cover plate (5) is provided with a liquid injection hole (7).

8. The cover plate structure according to claim 6, characterized in that: An explosion-proof valve (8) is provided on the cover plate (5).

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