Battery pole and battery

Abstract

The embodiment of the utility model discloses a battery pole and a battery. The battery pole comprises a first tab and a second tab which are formed by punching, the first tab is provided with a first connecting part, the second tab is provided with a second connecting part matched with the first connecting part, and the first connecting part and the second connecting part are in butt welding connection, so that the number of parts for preparing the battery pole can be reduced, the welding process is simplified, the preparation cost of the battery pole is reduced, and the production cost of the battery is further reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of batteries, in particular to a battery pole and a battery. Background Art

[0002] At present, with the increasing miniaturization, lightness and portability of electronic products, such as cameras, notebooks and mobile phones, the driving power of these electronic products is also developing in the direction of high capacity, high safety and lightness. Batteries are widely used in electronic products due to their excellent characteristics such as high capacity.

[0003] The battery includes a shell, a top cover and a battery cell. The shell is provided with a shell cavity, and the battery cell is placed in the shell cavity. Two poles are provided on the top cover. The poles are electrically connected to the battery cell through a soft connecting piece and can be connected to the outside.

[0004] In the prior art, the preparation and assembly of the pole is relatively complicated and the cost is relatively high. Utility Model Content

[0005] The utility model aims to provide a battery shell and a battery, aiming to solve the problem that the preparation and assembly of the poles in the existing batteries are relatively complicated and the cost is relatively high.

[0006] In a first aspect, the utility model provides a battery pole, comprising a first pole ear and a second pole ear formed by stamping; the first pole ear is provided with a first connecting portion, the second pole ear is provided with a second connecting portion for cooperating with the first connecting portion, and the first connecting portion and the second connecting portion are butt-welded.

[0007] In one embodiment, the first pole tab protrudes toward the second pole tab to form a first connecting portion, the second pole tab protrudes toward the first pole tab to form a second connecting portion, and the first connecting portion is butt-welded to the second connecting portion.

[0008] In one embodiment, the first pole tab protrudes toward the second pole tab to form a first connecting portion, and the first connecting portion is butt-welded to the second pole tab;

[0009] Alternatively, the second pole tab protrudes toward the first pole tab to form a second connecting portion, and the first pole tab is butt-welded to the second connecting portion.

[0010] In a second aspect, the utility model further provides a battery, comprising a battery cell, a battery shell and a battery pole according to any one of the above embodiments, wherein the battery cell is disposed in the battery shell and the battery pole is mounted on the battery shell.

[0011] In one embodiment, the battery case includes a case body and a cover body, the case body is provided with a mounting cavity and an opening communicating with the mounting cavity, and the cover body is provided at the opening;

[0012] The battery pole is mounted on the cover.

[0013] In one embodiment, the battery case further comprises a first plastic plate, a second plastic plate and a sealing ring, the cover comprises an outer surface and an inner surface arranged opposite to each other, the cover is provided with a through hole penetrating the outer surface and the inner surface, and the first pole ear and the second pole ear are butt-welded through the through hole;

[0014] The first plastic plate is arranged between the first pole lug and the outer surface, the second plastic plate is arranged between the second pole lug and the inner surface, the sealing ring is arranged in the through hole and elastically abuts between the inner surface and the second pole lug.

[0015] In one embodiment, the first plastic plate includes a plastic plate body and an extension portion fixedly disposed on the plastic plate body, wherein the extension portion is disposed in the through hole;

[0016] The extending portion comprises an extending section for being positioned flush with the hole wall of the through hole, and a guiding section connected to the extending section, wherein the guiding section is provided with a guiding surface for guiding the sealing ring.

[0017] In one embodiment, the shell body comprises:

[0018] A first shell, the first shell comprising a first side wall and a plurality of first connecting walls fixedly arranged around the first side wall;

[0019] And a second shell, the second shell includes a second side wall and a plurality of second connecting walls fixed on the periphery of the second side wall; the sides of the plurality of first connecting walls away from the first side wall respectively contact with the sides of the plurality of second connecting walls away from the second side wall and are welded and fixed to form a plurality of third side walls; the maximum projection area of ​​each of the third side walls is smaller than the maximum projection area of ​​the first side wall or smaller than the maximum projection area of ​​the second side wall.

[0020] In one embodiment, the shell body and the cover body are both structural members made of iron metal, and the thickness of the wall plate of the shell body is between 0.03mm-1.20mm; and / or,

[0021] The opening is arranged at the top of the shell body, and one end of the cover body away from the opening is higher than the top of the shell body.

[0022] In one embodiment, a limiting protrusion is provided on one side of the shell body close to the opening, and the limiting protrusion is provided at the connection between the third side wall and the first side wall, and / or the limiting protrusion is provided at the connection between the third side wall and the second side wall; a supporting portion for abutting against the limiting protrusion is provided on the cover body; and / or,

[0023] The battery shell also includes an explosion-proof sheet. The battery pole and the explosion-proof sheet are spaced apart and distributed on the cover body. A liquid injection hole is provided on the cover body. The liquid injection hole and the explosion-proof sheet are respectively arranged on both sides of the battery pole.

[0024] The following beneficial effects are achieved by using the embodiments of the present invention:

[0025] The battery pole and battery of the utility model are adopted, and the battery pole includes a first pole ear and a second pole ear which are stamped and formed; the first pole ear is provided with a first connecting portion, and the second pole ear is provided with a second connecting portion for cooperating with the first connecting portion, and the first connecting portion and the second connecting portion are butt-welded and connected, and other parts of the first pole ear other than the first connecting portion, and other parts of the second pole ear other than the second connecting portion can also be used as adapters, that is, the first pole ear and the second pole ear can also be connected to external wiring, thereby reducing the number of components for preparing the battery pole, simplifying the welding process, reducing the preparation cost of the battery pole, and thus reducing the production cost of the battery. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0027] in:

[0028] Figure 1 Schematic diagram of a battery case in one embodiment.

[0029] Figure 2 for Figure 1 Schematic diagram of the shell body in the battery shell shown.

[0030] Figure 3 for Figure 2 Another angle schematic diagram of the shell body shown.

[0031] Figure 4 for Figure 3 Enlarged schematic diagram of part A in the middle.

[0032] Figure 5 for Figure 1A top view of the battery case is shown.

[0033] Figure 6 for Figure 5 Middle BB section view.

[0034] Figure 7 for Figure 6 Enlarged schematic diagram of part C in the middle.

[0035] Figure 8 for Figure 1 Schematic diagram of the battery terminals on the battery case shown.

[0036] Reference numerals: 100, shell body; 101, mounting cavity; 102, opening; 110, first shell; 111, first side wall; 112, first connecting wall; 120, second shell; 121, second side wall; 122, second connecting wall; 130, first wall surface; 131, first weld; 140, second wall surface; 141, second weld; 150, third wall surface; 151, third weld; 160, limiting protrusion; 200, cover body; 2 30. injection hole; 240. outer surface; 250. inner surface; 260. through hole; 300. battery pole; 310. first pole ear; 311. first connecting part; 320. second pole ear; 321. second connecting part; 400. explosion-proof disk; 500. first plastic plate; 510. plastic plate body; 520. extension part; 521. extension section; 522. guide section; 523. guide surface; 600. second plastic plate; 700. sealing ring. DETAILED DESCRIPTION

[0037] 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. Obviously, 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.

[0038] It should be noted that all directional indications (such as up, down, left, right, front, back...) in the embodiments of the present invention are only used to explain the relative position relationship, movement status, etc. between the components under a certain specific posture (as shown in the accompanying drawings). If the specific posture changes, the directional indication will also change accordingly.

[0039] In addition, the descriptions of "first", "second", etc. in the present utility model are only used for descriptive purposes and cannot be understood as indicating or implying their relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the said features. In addition, the technical solutions between the various embodiments can be combined with each other, but they must be based on the ability of ordinary technicians in this field to implement them. When the combination of technical solutions is contradictory or cannot be implemented, it should be deemed that such combination of technical solutions does not exist and is not within the scope of protection required by the present utility model.

[0040] See also Figure 8 The utility model provides a battery pole 300, which includes a first pole ear 310 and a second pole ear 320 formed by stamping; the first pole ear 310 is provided with a first connecting portion 311, and the second pole ear 320 is provided with a second connecting portion 321 for matching with the first connecting portion 311, and the first connecting portion 311 and the second connecting portion 321 are butt-welded, and other parts of the first pole ear 310 other than the first connecting portion 311 and other parts of the second pole ear 320 other than the second connecting portion 321 can also be used as adapters, that is, the first pole ear 310 and the second pole ear 320 can also be connected to external wiring, thereby reducing the number of components for preparing the battery pole, simplifying the welding process, and reducing the preparation cost of the battery pole.

[0041] In this embodiment, the specific arrangement of the battery pole 300 has multiple specific implementations. In one implementation, the center of the first pole ear 310 protrudes toward the second pole ear 320 to form a first connection portion 311, the center of the second pole ear 320 protrudes toward the first pole ear 310 to form a second connection portion 321, and the first connection portion 311 and the second connection portion 321 are butt-welded to complete the preparation of the battery pole 300. In another implementation, the center of the first pole ear 310 protrudes toward the second pole ear 320 to form a first connection portion 311, and the first connection portion 311 and the center of the second pole ear 320 are butt-welded to complete the preparation of the battery pole 300. In another implementation, the center of the second pole ear 320 protrudes toward the first pole ear 310 to form a second connection portion 321, and the center of the first pole ear 310 and the second connection portion 321 are butt-welded to complete the preparation of the battery pole 300. Specifically, the first pole ear 310 and the second pole ear 320 can be structural members made of different materials.

[0042] See also Figures 1 to 3The utility model also provides a battery, which includes a battery cell, a battery shell and a battery pole 300 of any of the above embodiments. The battery cell is arranged in the battery shell, and the battery pole 300 is installed on the battery shell. Since the preparation cost of the battery pole 300 is relatively low, the production cost of the battery can be reduced.

[0043] In one embodiment, the battery case includes a case body 100 and a cover body 200 , the case body 100 is provided with an installation cavity 101 and an opening 102 communicating with the installation cavity 101 , the cover body 200 is covered at the opening 102 ; the battery pole 300 is installed on the cover body 200 .

[0044] In one embodiment, the shell body 100 includes a first shell 110 and a second shell 120, the first shell 110 includes a first side wall 111 and a plurality of first connecting walls 112 fixedly arranged on the periphery of the first side wall 111; the second shell 120 includes a second side wall 121 and a plurality of second connecting walls 122 fixedly arranged on the periphery of the second side wall 121; the sides of the plurality of first connecting walls 112 away from the first side wall 111 respectively contact with the sides of the plurality of second connecting walls 122 away from the second side wall 121 and are welded and fixed to form a plurality of third side walls; the maximum projection area of ​​each third side wall is smaller than the maximum projection area of ​​the first side wall 111 or smaller than the maximum projection area of ​​the second side wall 121.

[0045] It can be understood that since the first connecting wall 112 and the second connecting wall 122 are small connecting surfaces, the deformation of the small connecting surface after bending is smaller and the strength of the relatively large connecting surface is higher. Then, by welding on the small connecting surface, the deformation of the welding can be reduced to improve the welding quality and welding yield, thereby reducing the deformation of the shell after welding and reducing the risk of air leakage in the weld.

[0046] In this embodiment, there are three third side walls, namely the first wall 130, the second wall 140 and the third wall 150, wherein the first wall 130, the second wall 140 and the third wall 150 are respectively welded to form the first weld 131, the second weld 141 and the third weld 151, by setting each weld at the middle position of several third side walls, each weld is located on the narrow side of the battery shell, and the structural strength of the battery shell near the narrow side is relatively high. By welding on the narrow side, the deformation of the welding can be reduced to improve the welding quality and the welding yield rate.

[0047] In one embodiment, please continue to refer to Figures 1 to 3 The shell body 100 and the cover body 200 are both structural parts made of iron metal. Compared with the aluminum metal shell, the strength of iron metal is higher, so the wall thickness of the shell body 100 can be made thinner, which reduces the overall weight and manufacturing cost of the battery shell and ensures that the structural strength of the battery shell will not be reduced.

[0048] Further, the wall thickness of the shell body 100 is between 0.03mm-1.20mm, and preferably, the wall thickness of the shell body 100 can be selected between 0.05mm-1.00mm. Of course, the wall thickness of the cover body 200 can also be between 0.03mm-1.20mm. Preferably, the wall thickness of the shell body 100 can be selected between 0.05mm-1.00mm. Specifically, the wall thickness of the shell body 100 can be selected as 0.03mm, 0.05mm, 0.10mm, 0.30mm, 0.50mm, 0.70mm, 0.90mm, 1.00mm or 1.20mm. The wall thickness of the cover body 200 can be selected as 0.03mm, 0.05mm, 0.10mm, 0.30mm, 0.50mm, 0.70mm, 0.90mm, 1.00mm or 1.20mm. Of course, in other embodiments, the wall thickness of the shell body 100 and the cover body 200 can be selected to be 1.30 mm, 1.40 mm or 1.50 mm or more, and the greater the wall thickness, the higher the structural strength of the battery shell. Of course, in other embodiments, the shell body 100 and the cover body 200 can also be structural members made of copper metal or other metal materials.

[0049] In one embodiment, please refer to Figure 4 A limiting protrusion 160 is provided on one side of the shell body 100 close to the opening 102, and the limiting protrusion 160 is provided at the connection between the third side wall and the first side wall 111, and / or the limiting protrusion 160 is provided at the connection between the third side wall and the second side wall 121; a supporting portion for abutting against the limiting protrusion 160 is provided on the cover body 200; through such a configuration, the limiting protrusion 160 is provided at the connection between the side walls on the shell body 100, and the supporting portion of the cover body 200 can abut against the limiting protrusion 160, thereby realizing the assembly of the shell body 100 and the cover body 200.

[0050] Furthermore, in the present embodiment, each limiting protrusion 160 is arranged on the inner wall of the shell body 100, that is, each limiting protrusion 160 is arranged in the installation cavity 101, and the cover body 200 is embedded in the shell body 100. The support portion can be inserted into the installation cavity 101 from the opening 102 and abut against the limiting protrusion 160. Through such a setting, each limiting protrusion 160 can be restricted to the four corners in the installation cavity 101, thereby reducing the influence of the setting of the limiting protrusion 160 on the installation space in the installation cavity 101, facilitating the spatial arrangement of the battery cell in the installation cavity 101, and thereby improving the performance of the battery cell.

[0051] Of course, in other embodiments, each limiting protrusion 160 can also be set on the outer wall of the shell body 100, and the cover body 200 is sleeved on the outside of the shell body 100, and the support part can abut against the limiting protrusion 160 on the outside of the shell body 100.

[0052] In one embodiment, please refer to Figure 5 and Figure 6 , the opening 102 is opened at the top of the shell body 100, and the end of the cover body 200 away from the opening 102 is higher than the top of the shell body 100. By setting it in this way, the upper plane of the cover body 200 can be higher than the upper end surface of the shell body 100, thereby avoiding the undesirable situation that the upper end surface plate of the shell body 100 extends alone to produce sharp edges. It can be understood that by controlling the position of the limiting protrusion 160 away from the opening 102 in the shell body 100 and controlling the length of the support part, the height of the end of the cover body 200 away from the opening 102 above the top of the shell body 100 can be controlled, and the packaging is completed by welding the overlapping part of the cover body 200 and the shell body 100.

[0053] In one embodiment, see Figure 5 The battery shell also includes an explosion-proof sheet 400. The battery pole 300 and the explosion-proof sheet 400 are spaced apart on the cover 200. The cover 200 is provided with an injection hole 230. The injection hole 230 and the explosion-proof sheet 400 are respectively arranged on both sides of the battery pole 300, so that the electrolyte remaining around the injection hole 230 during the battery cell injection can be blocked by the battery pole 300, preventing the electrolyte from diffusing to the explosion-proof sheet 400 area, and ensuring that the explosion-proof performance of the explosion-proof sheet 400 is stable and reliable. Specifically, the cover 200 is a plate structure made of steel plates integrally stamped, and two battery poles 300 are provided, and are symmetrically arranged on both sides of the explosion-proof sheet 400.

[0054] In one embodiment, see Figure 7 The battery case further includes a first plastic plate 500, a second plastic plate 600 and a sealing ring 700. The cover body 200 includes an outer surface 240 and an inner surface 250 arranged opposite to each other. The cover body 200 is provided with a through hole 260 penetrating the outer surface 240 and the inner surface 250. The first pole ear 310 and the second pole ear 320 are butt-welded through the through hole 260. The first plastic plate 500 is arranged between the first pole ear 310 and the outer surface 240, the second plastic plate 600 is arranged between the second pole ear 320 and the inner surface 250, and the sealing ring 700 is arranged around the through hole 260 and elastically abuts between the inner surface 250 and the second pole ear 320, thereby realizing the sealing arrangement of the battery pole 300 on the cover body 200.

[0055] Further, in this embodiment, the first plastic plate 500 includes a plastic plate body 510, and an extension portion 520 fixedly arranged on the plastic plate body 510, and the extension portion 520 is arranged in the through hole 260; the extension portion 520 includes an extension section 521 for being positioned flatly with the hole wall of the through hole 260, and a guide section 522 connected to the extension section 521, and the guide section 522 is provided with a guide surface 523 for guiding the sealing ring 700. Through such a configuration, the guiding effect of the guide surface 523 can facilitate the assembly of the sealing ring 700, and the flat positioning of the extension section 521 can enhance the positioning accuracy of the first plastic plate 500 when installed on the cover 200, and facilitate the assembly of the first plastic plate 500.

[0056] During assembly, the pole 300 , the explosion-proof disk 400 , the first plastic plate 500 , the second plastic plate 600 and the sealing ring 700 are first fixedly mounted on the cover body 200 , and then the cover body 200 is fixedly welded to the shell body 100 .

[0057] In one embodiment, the battery cell may be a wound battery cell, the battery may be a new energy battery, and the battery may be applied to the fields of power batteries and energy storage.

[0058] The above disclosure is only a preferred embodiment of the present invention, and certainly cannot be used to limit the scope of rights of the present invention. Therefore, equivalent changes made according to the claims of the present invention are still within the scope covered by the present invention.

Claims

1. A battery pole, characterized in that: The invention comprises a first pole lug (310) and a second pole lug (320) which are formed by stamping; the first pole lug (310) is provided with a first connecting portion (311), the second pole lug (320) is provided with a second connecting portion (321) for matching with the first connecting portion (311), and the first connecting portion (311) and the second connecting portion (321) are butt-welded.

2. The battery pole according to claim 1, characterized in that: The first pole lug (310) protrudes toward the second pole lug (320) to form a first connecting portion (311), and the second pole lug (320) protrudes toward the first pole lug (310) to form a second connecting portion (321), and the first connecting portion (311) and the second connecting portion (321) are butt-welded.

3. The battery pole according to claim 1, characterized in that: The first pole lug (310) protrudes toward the second pole lug (320) to form a first connecting portion (311), and the first connecting portion (311) is butt-welded to the second pole lug (320); Alternatively, the second pole lug (320) protrudes toward the first pole lug (310) to form a second connecting portion (321), and the first pole lug (310) and the second connecting portion (321) are butt-welded.

4. A battery, characterized in that: The battery comprises a battery cell, a battery shell and a battery pole according to any one of claims 1 to 3, wherein the battery cell is arranged in the battery shell, and the battery pole is mounted on the battery shell.

5. The battery according to claim 4, characterized in that The battery case comprises a case body (100) and a cover body (200), the case body (100) being provided with a mounting cavity (101) and an opening (102) communicating with the mounting cavity (101), and the cover body (200) being provided to cover the opening (102); The battery pole is mounted on the cover (200).

6. The battery according to claim 5, characterized in that The battery case further comprises a first plastic plate (500), a second plastic plate (600) and a sealing ring (700); the cover body (200) comprises an outer surface (240) and an inner surface (250) arranged opposite to each other; a through hole (260) is provided on the cover body (200) penetrating the outer surface (240) and the inner surface (250); the first pole lug (310) and the second pole lug (320) are butt-welded through the through hole (260); The first plastic plate (500) is arranged between the first pole lug (310) and the outer surface (240), the second plastic plate (600) is arranged between the second pole lug (320) and the inner surface (250), and the sealing ring (700) is arranged around the through hole (260) and elastically abuts between the inner surface (250) and the second pole lug (320).

7. The battery according to claim 6, characterized in that The first plastic plate (500) comprises a plastic plate body (510) and an extension portion (520) fixedly arranged on the plastic plate body (510), and the extension portion (520) is arranged in the through hole (260); The extension portion (520) comprises an extension section (521) for being aligned with the hole wall of the through hole (260), and a guide section (522) connected to the extension section (521), wherein the guide section (522) is provided with a guide surface (523) for guiding the sealing ring (700).

8. The battery according to claim 5, characterized in that The shell body (100) comprises: A first shell (110), the first shell (110) comprising a first side wall (111) and a plurality of first connecting walls (112) fixedly arranged on the periphery of the first side wall (111); and a second shell (120), the second shell (120) comprising a second side wall (121) and a plurality of second connecting walls (122) fixedly arranged on the circumference of the second side wall (121); the sides of the plurality of first connecting walls (112) away from the first side wall (111) respectively contact with the sides of the plurality of second connecting walls (122) away from the second side wall (121) and are welded and fixed to form a plurality of third side walls; the maximum projection area of ​​each of the third side walls is smaller than the maximum projection area of ​​the first side wall (111) or smaller than the maximum projection area of ​​the second side wall (121).

9. The battery according to claim 5, characterized in that The shell body (100) and the cover body (200) are both structural members made of iron metal, and the wall plate thickness of the shell body (100) is between 0.03 mm and 1.20 mm; and / or, The opening (102) is opened at the top of the shell body (100), and one end of the cover body (200) away from the opening (102) is higher than the top of the shell body (100).

10. The battery according to claim 8, characterized in that A limiting protrusion (160) is provided on one side of the shell body (100) close to the opening (102), and the limiting protrusion (160) is provided at the connection between the third side wall and the first side wall (111), and / or the limiting protrusion (160) is provided at the connection between the third side wall and the second side wall (121); a supporting portion for abutting against the limiting protrusion (160) is provided on the cover body (200); and / or, The battery shell further comprises an explosion-proof plate (400), the battery pole and the explosion-proof plate (400) are spaced apart and distributed on the cover body (200), a liquid injection hole (230) is provided on the cover body (200), and the liquid injection hole (230) and the explosion-proof plate (400) are respectively arranged on both sides of the battery pole.

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