Battery structure assembly and battery

Abstract

The utility model relates to the technical field of energy storage equipment, in particular to a battery structure assembly and a battery, and the battery structure assembly comprises a pole and an insulating part. The side wall of the pole is provided with a first limiting part, the side wall of the pole is sleeved with the insulating part, the inner side wall of the insulating part is provided with a second limiting part, the first limiting part is matched with the second limiting part in a limiting manner, and the outer side wall of the insulating part is provided with a third limiting part; the third limiting part and the second limiting part are located at the same position of the insulating part in the circumferential direction of the insulating part. The first limiting part and the third limiting part are limiting protrusions, the second limiting part is a limiting groove, or the first limiting part and the third limiting part are limiting grooves, and the second limiting part is a limiting protrusion. The battery comprises a battery cell and the battery structure assembly, wherein the battery cell is arranged in the shell of the battery structure assembly. According to the battery, the torsion resistance of the pole component can be improved, and the service life and the use safety of the battery are ensured.

Description

Technical Field

[0001] The utility model relates to the technical field of energy storage equipment, in particular to a battery structure component and a battery. Background Art

[0002] The battery's terminal is used to connect to the outside world and transmit electricity. The stability of the terminal assembly with the battery casing directly affects the battery's quality and service life. To ensure insulation between the battery terminal and the casing, a plastic insulating member is placed on the outside of the terminal. One method is to coat the terminal with rubber. The insulating member is sandwiched between the terminal and the through-hole in the casing. When the outer ring of the insulating member's cross-section is circular, to prevent the insulating member from rotating axially relative to the casing, a protrusion or depression is provided on the outer sidewall of the insulating member, and a corresponding groove or protrusion is provided on the inner wall of the through-hole in the casing. The protrusion and depression cooperate to prevent the insulating member from rotating relative to the casing. However, the injection molding characteristics of the insulating member dictate that the thickness of the protrusion or the depth of the depression cannot be too large, otherwise it will affect the quality of the injection molding. Furthermore, the limited rubber coating thickness of the limiting protrusion or the depth of the limiting groove directly limits the improvement of the terminal assembly's torsional resistance. The torque limit of the current structure is 5Nm. The insufficient torsional resistance of the terminal assembly directly affects the battery's service life and safety. Utility Model Content

[0003] One purpose of the utility model is to provide a battery structure assembly that can improve the torsional resistance of the pole assembly and ensure the service life and safety of the battery.

[0004] To achieve this purpose, the present invention adopts the following technical solutions:

[0005] A battery structure assembly is provided, comprising:

[0006] A pole, wherein a first limiting portion is provided on a side wall of the pole;

[0007] An insulating member, the insulating member being sleeved on the side wall of the pole, a second limiting portion being provided on the inner side wall of the insulating member, the first limiting portion and the second limiting portion being limitedly engaged with each other, and a third limiting portion being provided on the outer side wall of the insulating member, the third limiting portion and the second limiting portion being located at the same position of the insulating member along its own circumference;

[0008] The first limiting portion and the third limiting portion are both limiting protrusions, and the second limiting portion is a limiting groove, or the first limiting portion and the third limiting portion are both limiting grooves, and the second limiting portion is a limiting protrusion.

[0009] Optionally, the pole includes a first section, a second section, and a third section arranged in sequence along its own axial direction, the third section is closer to the interior of the battery than the first section, the diameter of the first section is smaller than the diameter of the second section, the diameter of the third section is smaller than the diameter of the second section, and the end faces of both ends of the second section are covered with the insulating member.

[0010] Optionally, the first limiting portion is provided on the side wall of the first section, and the third limiting portion is provided at the portion where the insulating member covers the first section, corresponding to the first limiting portion of the first section;

[0011] And / or, the first limiting portion is provided on the side wall of the second section, and the third limiting portion is provided at the portion where the insulating member covers the second section, corresponding to the first limiting portion of the second section;

[0012] And / or, the first limiting portion is provided on the side wall of the third section, and the third limiting portion is provided at the portion of the insulating member covering the third section to correspond to the first limiting portion of the third section.

[0013] Optionally, an end surface of one end of the insulating member is flush with an end surface of the first section facing away from the interior of the battery.

[0014] Optionally, a plurality of first limiting portions are provided at intervals along the circumference of the first section, and a plurality of third limiting portions are provided at intervals where the insulating member covers the first section, corresponding one-to-one to the first limiting portions of the first section;

[0015] And / or, a plurality of the first limiting portions are provided at intervals along the circumference of the second section, and a plurality of the third limiting portions are provided at intervals where the insulating member covers the second section, corresponding one-to-one to the first limiting portions of the second section;

[0016] And / or, a plurality of the first limiting portions are arranged at intervals along the circumference of the third section, and a plurality of the third limiting portions are arranged at intervals where the insulating member covers the third section, so as to correspond one-to-one to the first limiting portions of the third section.

[0017] Optionally, it further includes a shell, which has a through hole, the pole is inserted into the through hole, a covering ring protrudes from the shell, the covering ring surrounds the through hole, the covering ring is bent and covered on the side of the pole, the insulating part is clamped between the pole and the inner wall of the covering ring, and the inner side wall of the covering ring is provided with a fourth limiting portion, and the fourth limiting portion is limitedly matched with the third limiting portion.

[0018] Optionally, one end of the shrouding ring away from the shell is an R angle.

[0019] Optionally, the covering ring is bent to form an annular side and an annular end surface, one end of the annular side is connected to the annular end surface, and the other end is connected to the outer shell;

[0020] The third limiting portion includes a first limiting protrusion, the inner ring of the annular end surface has the fourth limiting portion, the fourth limiting portion is a first limiting groove, and the first limiting protrusion is inserted into the first limiting groove;

[0021] The third limiting portion includes a second limiting protrusion, the inner side wall of the annular side has the fourth limiting portion, the fourth limiting portion is a second limiting groove, and the second limiting protrusion is inserted into the second limiting groove.

[0022] Optionally, the housing includes a cover plate, and the through hole is opened on the cover plate.

[0023] Another object of the present invention is to provide a battery that can improve the torsional resistance of the pole assembly and ensure the service life and safety of the battery.

[0024] To achieve this purpose, the present invention adopts the following technical solutions:

[0025] A battery is provided, comprising a battery core and the above-mentioned battery structure assembly, wherein the battery core is arranged in a housing of the battery structure assembly.

[0026] Beneficial effects of the utility model:

[0027] The utility model provides a battery structure assembly, including a pole and an insulating member. A first limiting portion is provided on the side wall of the pole. The insulating member is sleeved on the side wall of the pole, a second limiting portion is provided on the inner side wall of the insulating member, the first limiting portion and the second limiting portion are limitedly matched, a third limiting portion is provided on the outer side wall of the insulating member, the third limiting portion and the second limiting portion are located at the same position of the insulating member along its own circumference. The first limiting portion and the third limiting portion are both limiting protrusions, and the second limiting portion is a limiting groove, or the first limiting portion and the third limiting portion are both limiting grooves, and the second limiting portion is a limiting protrusion. By providing the first limiting portion on the side wall of the pole, the protruding height or recessed depth of the third limiting portion can be increased without significantly changing the thickness of the insulating member, thereby improving the torsional resistance of the pole assembly composed of the pole and the insulating member, and ensuring the service life and safety of the battery.

[0028] The utility model also provides a battery comprising a battery core and the above-mentioned battery structure assembly, wherein the battery core is arranged in a housing of the battery structure assembly. The battery can improve the torsional resistance of the terminal assembly, thereby ensuring the service life and safety of the battery. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] Figure 1This is a schematic structural diagram of a battery structure assembly provided by an embodiment of the present utility model;

[0030] Figure 2 It is an exploded view of the battery structure assembly provided by an embodiment of the present utility model;

[0031] Figure 3 It is a partial enlarged view of the battery structure assembly provided by the embodiment of the present utility model;

[0032] Figure 4 It is a partial cross-sectional view of a battery structure assembly provided by an embodiment of the present utility model;

[0033] Figure 5 This is a schematic structural diagram of a pole and an insulating member provided in an embodiment of the present utility model;

[0034] Figure 6 The explosion of the pole and the insulating member provided by the embodiment of the utility model Figure 1 ;

[0035] Figure 7 The explosion of the pole and the insulating member provided by the embodiment of the utility model Figure 2 ;

[0036] Figure 8 It is a partial enlarged view of the cover provided by the embodiment of the utility model.

[0037] In the picture:

[0038] 1. Pole; 11. First limiting portion; 101. First section; 102. Second section; 103. Third section; 104. Fourth section;

[0039] 2. Insulating member; 21. Second limiting portion; 22. Third limiting portion; 201. Fifth section; 202. Sixth section;

[0040] 3. Cover plate; 31. Through hole; 32. Cover ring; 321. Rounded corner; 322. Annular side; 3221. Second limiting groove; 323. Annular end face; 3231. First limiting groove;

[0041] 4. Sealing ring; 5. Lower plastic; 6. Explosion-proof valve; 7. Explosion-proof patch. DETAILED DESCRIPTION

[0042] The technical solution of the present invention is further described below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely for the purpose of explaining 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 it.

[0043] In the description of this utility model, it should be noted that, unless otherwise expressly specified or limited, the terms "mounted," "connected," and "connected" should be understood in a broad sense. For example, they can refer to fixed or detachable connections; mechanical or electrical connections; direct or indirect connections through an intermediate medium; and internal communication 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.

[0044] 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.

[0045] like Figures 1-8 As shown, the battery structure assembly of this embodiment includes a pole 1 and an insulating member 2. Among them, a first limiting portion 11 is provided on the side wall of the pole 1. The insulating member 2 is sleeved on the side wall of the pole 1, and a second limiting portion 21 is provided on the inner side wall of the insulating member 2. The first limiting portion 11 and the second limiting portion 21 are limited and matched. A third limiting portion 22 is provided on the outer side wall of the insulating member 2. The third limiting portion 22 and the second limiting portion 21 are located at the same position of the insulating member 2 along its own circumference. The first limiting portion 11 and the third limiting portion 22 are both limiting protrusions, and the second limiting portion 21 is a limiting groove, or the first limiting portion 11 and the third limiting portion 22 are both limiting grooves, and the second limiting portion 21 is a limiting protrusion. By providing the first limiting portion 11 on the side wall of the pole 1, the protruding height or recessed depth of the third limiting portion 22 can be increased without significantly changing the thickness of the insulating member 2, thereby improving the torsional resistance of the pole assembly composed of the pole 1 and the insulating member 2, thereby ensuring the service life and safety of the battery.

[0046] Optionally, the terminal 1 includes a first section 101, a second section 102, and a third section 103, arranged in sequence along its axial direction. The third section 103 is closer to the interior of the battery than the first section 101. The diameter of the first section 101 is smaller than that of the second section 102, and the diameter of the third section 103 is smaller than that of the second section 102. The end surfaces of the second section 102 are both covered with an insulating member 2. That is, the insulating member 2 covers the central portion of the terminal 1 with the largest diameter, and the insulating member 2 covers both end surfaces of the second section 102, preventing the insulating member 2 from axially separating from the terminal 1. Optionally, the terminal 1 also includes a fourth section 104, located at the end of the first section 101 away from the second section 102.

[0047] Optionally, a first limiting portion 11 is provided on the sidewall of the first segment 101, and a third limiting portion 22 is provided where the insulating member 2 covers the first segment 101, corresponding to the first limiting portion 11 of the first segment 101. The insulating member 2 covering the first segment 101 is the fifth segment 201. Optionally, a second limiting portion 21 is recessed in the inner ring of the fifth segment 201, and the first limiting portion 11 is inserted into the second limiting portion 21. The fifth segment 201 is provided with the second limiting portion 21 and a third limiting portion 22 is protruded on the outer ring. Because the third limiting portion 22 corresponds to the first limiting portion 11 and is supported by the first limiting portion 11 on its inner side, the protruding height of the third limiting portion 22 of the overmolded insulating member 2 can be set higher, improving the torsional resistance of the pole assembly. The torsional force of this structure can be increased to 12 Nm.

[0048] Optionally, in this embodiment, a first limiting portion 11 is provided on the sidewall of the second segment 102, and a third limiting portion 22 is provided where the insulating member 2 covers the second segment 102, corresponding to the first limiting portion 11 of the second segment 102. The insulating member 2 covering the second segment 102 is the sixth segment 202. Optionally, a second limiting portion 21 is recessed in the inner ring of the sixth segment 202, and the first limiting portion 11 of the second segment 102 is inserted into the second limiting portion 21 of the sixth segment 202. The sixth segment 202 is provided with the second limiting portion 21, and a third limiting portion 22 is protruded from the outer ring. Because the third limiting portion 22 corresponds to the first limiting portion 11 and is similarly supported by the first limiting portion 11 on its inner side, the protruding height of the third limiting portion 22 of the overmolded insulating member 2 can be set higher, further improving the torsional resistance of the pole assembly.

[0049] Optionally, in other embodiments, a first limiting portion 11 may be provided on the sidewall of the third section 103, and a third limiting portion 22 may be provided where the insulating member 2 covers the third section 103, corresponding to the first limiting portion 11 of the third section 103. In this embodiment, the first limiting portion 11 is not provided on the third section 103, and the fourth section 104 is also not provided with a first limiting portion 11.

[0050] Optionally, the end surface of one end of the insulating member 2 is flush with the end surface of the first section 101 facing away from the interior of the battery, and the insulation covers the edge of the first section 101 to prevent the edge of the first section 101 from scratching other components.

[0051] Optionally, a plurality of first limiting portions 11 are provided at intervals along the circumference of the first segment 101, and a plurality of third limiting portions 22 are provided at intervals where the insulating member 2 covers the first segment 101, corresponding one-to-one to the first limiting portions 11 of the first segment 101. In this embodiment, two first limiting portions 11 are provided on the first segment 101, and the two first limiting portions 11 are arranged opposite each other. Two third limiting portions 22 are provided on the fifth segment 201 of the insulating member 2, corresponding to the two first limiting portions 11, respectively.

[0052] Optionally, a plurality of first limiting portions 11 are provided at intervals along the circumference of the second segment 102, and a plurality of third limiting portions 22 are provided at intervals where the insulating member 2 covers the second segment 102, corresponding one-to-one to the first limiting portions 11 of the second segment 102. In this embodiment, two first limiting portions 11 are also provided on the second segment 102, and the two first limiting portions 11 are arranged opposite each other. Two third limiting portions 22 are provided on the sixth segment 202 of the insulating member 2, corresponding to the two first limiting portions 11, respectively.

[0053] Optionally, in other embodiments, the third section 103 may also be provided with a plurality of first limiting portions 11 spaced apart along its own circumference, and the insulating member 2 may be provided with a plurality of third limiting portions 22 spaced apart where it covers the third section 103 , corresponding one-to-one to the first limiting portions 11 of the third section 103 .

[0054] Optionally, the battery structure assembly further includes a shell, which is provided with a through hole 31, the pole 1 is inserted into the through hole 31, a covering ring 32 is protruded from the shell, the covering ring 32 surrounds the through hole 31, the covering ring 32 is bent and covered on the side of the pole 1, the insulating member 2 is sandwiched between the pole 1 and the inner wall of the covering ring 32, and the inner side wall of the covering ring 32 is provided with a fourth limiting portion, which is limited and matched with the third limiting portion 22. Figure 4 As shown, the shell can limit the two ends of the pole 1 to ensure that the pole 1 does not separate from the shell. One end is the part of the shell surrounded by the covering ring 32 and attached to the end face of the second section 102 of the pole 1 facing the interior of the battery, and the other end is covered by the covering ring 32 on the end face of the second section 102 facing away from the interior of the battery. The third section 103 of the pole 1 is inserted in the through hole 31.

[0055] Optionally, the end of the wrapping ring 32 away from the housing has an R-shaped corner 321, meaning that the inner side of the ring facing the pole 1 after bending is a convex curved surface. If the end of the wrapping ring 32 away from the housing has a sharp corner, stress concentration there can easily lead to the generation of aluminum wire and aluminum chips at the sharp corner after hemming. Providing the R-shaped corner 321 at the end of the wrapping ring 32 away from the housing can solve this problem and prevent the generation of aluminum wire and aluminum chips.

[0056] Optionally, the covering ring 32 is bent to form an annular side 322 and an annular end surface 323. One end of the annular side 322 is connected to the annular end surface 323, and the other end is connected to the housing. The third limiting portion 22 includes a first limiting protrusion. The inner ring of the annular end surface 323 has a fourth limiting portion, which is a first limiting groove 3231. The first limiting protrusion is inserted into the first limiting groove 3231. That is, the third limiting portion 22 of the fifth section 201 is a first limiting protrusion, which is inserted into the first limiting groove 3231 of the annular end surface 323. The third limiting portion 22 includes a second limiting protrusion, and the inner side wall of the annular side 322 has a fourth limiting portion, the fourth limiting portion is a second limiting groove 3221, and the second limiting protrusion is inserted into the second limiting groove 3221, that is, the third limiting portion 22 of the sixth section 202 is a second limiting protrusion, which is inserted in the second limiting groove 3221 on the inner side of the annular side 322.

[0057] Optionally, in this embodiment, the housing includes a cover plate 3, a through hole 31 is formed on the cover plate 3, and a covering ring 32 is also correspondingly provided on the cover plate 3. The housing also includes a shell, and the cover plate 3 is provided at an opening of the shell. Of course, in other embodiments, the through hole 31 and the covering ring 32 may also be provided on the shell.

[0058] Optionally, in this embodiment, the battery structure assembly further includes a sealing ring 4, a lower plastic 5, an explosion-proof valve 6, and an explosion-proof patch 7. The sealing ring 4 is sleeved on the third section 103 of the terminal 1 and is sandwiched between the third section 103 and the inner wall of the through hole 31. The lower plastic 5 is attached to the side of the cover plate 3 facing the interior of the battery. The cover plate 3 is provided with an explosion-proof hole. The explosion-proof valve 6 and explosion-proof patch 7 are arranged in the explosion-proof hole of the housing to ensure the safety of the battery.

[0059] This battery assembly avoids the problem of uneven localized thickening of the insulating member 2 due to overmolding, making it more suitable for injection molding. Furthermore, by providing the first stopper 11 on the terminal 1, the battery assembly increases the protruding height of the third stopper 22 of the insulating member 2, thereby improving the terminal assembly's anti-twist performance. Furthermore, this battery assembly avoids the problem of aluminum wire and aluminum chips being generated at the sharp corners of the cover ring 32 after hemming, further ensuring the quality of the battery.

[0060] This embodiment also provides a battery comprising a battery cell and the aforementioned battery structure assembly, wherein the battery cell is disposed within a housing of the battery structure assembly. The battery can improve the torsional resistance of the terminal assembly, thereby ensuring the battery's service life and safety.

[0061] Obviously, the above embodiments of the present invention are merely examples for the purpose of clearly illustrating the present invention, and are not intended to limit the implementation methods of the present invention. Those skilled in the art will appreciate that other variations or modifications can be made based on the above description. It is not necessary and impossible to enumerate all implementation methods 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. A battery structure assembly, characterized in that: include: A pole (1), wherein a first limiting portion (11) is provided on a side wall of the pole (1); An insulating member (2), the insulating member (2) being sleeved on the side wall of the pole (1), a second limiting portion (21) being provided on the inner side wall of the insulating member (2), the first limiting portion (11) and the second limiting portion (21) being limitedly matched, a third limiting portion (22) being provided on the outer side wall of the insulating member (2), the third limiting portion (22) and the second limiting portion (21) being located at the same position of the insulating member (2) along its own circumference; The first limiting portion (11) and the third limiting portion (22) are both limiting protrusions, and the second limiting portion (21) is a limiting groove, or the first limiting portion (11) and the third limiting portion (22) are both limiting grooves, and the second limiting portion (21) is a limiting protrusion.

2. The battery structure assembly according to claim 1, characterized in that: The pole (1) comprises a first section (101), a second section (102) and a third section (103) arranged in sequence along its own axial direction; the third section (103) is closer to the interior of the battery than the first section (101); the diameter of the first section (101) is smaller than the diameter of the second section (102); the diameter of the third section (103) is smaller than the diameter of the second section (102); and the end surfaces of both ends of the second section (102) are covered with the insulating member (2).

3. The battery structure assembly according to claim 2, characterized in that: The first limiting portion (11) is provided on the side wall of the first section (101), and the third limiting portion (22) is provided at the location where the insulating member (2) covers the first section (101), so as to correspond to the first limiting portion (11) of the first section (101); And / or, the first limiting portion (11) is provided on the side wall of the second section (102), and the third limiting portion (22) is provided at the location where the insulating member (2) covers the second section (102) to correspond to the first limiting portion (11) of the second section (102); And / or, the first limiting portion (11) is provided on the side wall of the third section (103), and the third limiting portion (22) is provided at the location where the insulating member (2) covers the third section (103) to correspond to the first limiting portion (11) of the third section (103).

4. The battery structure assembly according to claim 2, characterized in that: An end surface of one end of the insulating member (2) is flush with an end surface of the first section (101) facing away from the interior of the battery.

5. The battery structure assembly according to claim 3, characterized in that: The first section (101) is provided with a plurality of first limiting portions (11) at intervals along its own circumference, and the insulating member (2) is provided with a plurality of third limiting portions (22) at intervals where it covers the first section (101), so as to correspond one-to-one to the first limiting portions (11) of the first section (101); And / or, the second section (102) is provided with a plurality of the first limiting portions (11) at intervals along its own circumferential direction, and the insulating member (2) is provided with a plurality of the third limiting portions (22) at intervals where it covers the second section (102), so as to correspond one-to-one to the first limiting portions (11) of the second section (102); And / or, the third section (103) is provided with a plurality of the first limiting portions (11) at intervals along its own circumference, and the insulating member (2) is provided with a plurality of the third limiting portions (22) at intervals where it covers the third section (103), so as to correspond one-to-one to the first limiting portions (11) of the third section (103).

6. The battery structure assembly according to any one of claims 1 to 5, characterized in that: The invention also includes a shell, wherein a through hole (31) is provided on the shell, and the pole (1) is inserted into the through hole (31). A covering ring (32) is protruded from the shell, and the covering ring (32) surrounds the through hole (31). The covering ring (32) is bent and covered on the side of the pole (1). The insulating member (2) is clamped between the pole (1) and the inner wall of the covering ring (32). The inner side wall of the covering ring (32) is provided with a fourth limiting portion, and the fourth limiting portion is limitedly matched with the third limiting portion (22).

7. The battery structure assembly according to claim 6, characterized in that: One end of the covering ring (32) away from the shell is an R angle (321).

8. The battery structure assembly according to claim 6, characterized in that: The covering ring (32) is bent to form an annular side (322) and an annular end surface (323); one end of the annular side (322) is connected to the annular end surface (323), and the other end is connected to the outer shell; The third limiting portion (22) includes a first limiting protrusion, the inner ring of the annular end surface (323) has the fourth limiting portion, the fourth limiting portion is a first limiting groove (3231), and the first limiting protrusion is inserted into the first limiting groove (3231); The third limiting portion (22) includes a second limiting protrusion, the inner side wall of the annular side (322) has the fourth limiting portion, the fourth limiting portion is a second limiting groove (3221), and the second limiting protrusion is inserted into the second limiting groove (3221).

9. The battery structure assembly according to claim 6, characterized in that: The housing comprises a cover plate (3), and the through hole (31) is opened on the cover plate (3).

10. A battery, characterized in that The invention comprises a battery cell and a battery structure assembly according to any one of claims 1 to 9, wherein the battery cell is arranged in a housing of the battery structure assembly.

Images