Square aluminum shell battery adapter plate

Abstract

The utility model discloses a square aluminum shell battery adapter piece, which relates to the technical field of batteries and comprises an adapter piece body arranged on a square top cover. The switching piece body comprises a head part and a tail part, a square welding hole which sleeves the surface of a pole is formed in the head part of the switching piece body, and a welding groove structure is arranged at the tail part of the switching piece body; the welding groove structure comprises a first sinking groove of the tab lead-in opening, a second sinking groove of the tab limiting opening and a metal elastic piece arranged between the first sinking groove and the second sinking groove, the metal elastic piece protrudes upwards, and the first sinking groove and the second sinking groove are located on the two sides of the metal elastic piece. The utility model has the advantages that the adapter plate has the characteristic of the welding groove, and compared with the existing structure, the tab is ultrasonically welded inside the adapter plate, so that the internal space of the battery cell is improved, a metal protection plate is omitted, and the cost is reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of batteries, in particular to a square aluminum shell battery adapter. Background Art

[0002] In recent years, energy storage modules in new energy lithium batteries have emerged. The battery capacity is getting bigger and bigger, which means that the core is getting thicker and thicker, and the corresponding core tabs are getting thicker. The current battery assembly process is to pre-weld the tabs with ultrasonic welding and then ultrasonically weld them with metal adapters. The parts used in this process involve metal adapters and metal protective sheets, such as Figure 6 As shown; currently, many materials are used, the processing procedures are complicated, and the actual application effect is not good. Utility Model Content

[0003] In view of the shortcomings of the prior art, the purpose of the utility model is to provide a square aluminum shell battery adapter. The adapter has a welding groove feature. Compared with the existing structure, the tabs are ultrasonically welded inside the adapter, the internal space of the battery cell is improved, and the metal protective sheet is omitted to reduce costs.

[0004] In order to achieve the above purpose, the technical solution of the utility model is as follows:

[0005] A square aluminum shell battery adapter, comprising an adapter body, wherein the adapter body is arranged on a square top cover;

[0006] The adapter body includes a head and a tail, a square welding hole for sleeve-mounting the pole surface is provided at the head of the adapter body, and a welding groove structure is provided at the tail of the adapter body;

[0007] The welding groove structure includes a first groove at the tab inlet, a second groove at the tab limiter, and a metal spring sheet arranged between the first groove and the second groove. The metal spring sheet protrudes upward, and the first groove and the second groove are located on both sides of the metal spring sheet.

[0008] Preferably, the first sink groove and the second sink groove are on the same plane, and the first sink groove and the second sink groove are in relative positions.

[0009] Preferably, the depth of the first sink groove and the second sink groove is 15% to 20% of the overall thickness of the adapter body.

[0010] Preferably, the first sink trough and the second sink trough are arranged in a rectangular structure.

[0011] Preferably, the metal spring sheet and the adapter body are an integrated structure, and the thickness of the metal spring sheet is 10% to 15% of the thickness of the adapter body.

[0012] Preferably, the square welding hole is located at the center of the head of the adapter body, is sleeved on the protrusion of the square top cover pole part, and leaves a gap of 0.1mm to 0.2mm with the protrusion.

[0013] Preferably, the adapter body and the protrusion of the square top cover pole portion are welded and connected.

[0014] Preferably, it further comprises a bayonet structure, and the bayonet structure cooperates with the pole latch on the square top cover.

[0015] Preferably, the cross-sectional shape of the bayonet structure is a large head and a small waist, and is tightly connected to the pole on the square top cover.

[0016] Compared with the prior art, the beneficial effects of the utility model are:

[0017] 1. The adapter has a welding groove feature. Compared with the existing structure, the tabs are ultrasonically welded inside the adapter, the internal space of the battery cell is improved, and the metal protective sheet is omitted to reduce costs;

[0018] 2. Compared with the existing structure, the adapter has a bayonet, which can reduce the probability of deviation during the welding process of the adapter;

[0019] 3. Compared with the existing structure, the adapter has a square welding hole, which can reduce the weight of the raw materials of the adapter and reduce the cost. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] The disclosure of the present invention is described with reference to the accompanying drawings. It should be understood that the drawings are only for illustrative purposes and are not intended to limit the scope of protection of the present invention. In the drawings, the same reference numerals are used to refer to the same components. Among them:

[0021] Figure 1 This is a top view of the adapter body of the utility model located on the square top cover;

[0022] Figure 2 This is an exploded view of the adapter body and the square top cover of the utility model;

[0023] Figure 3 It is a structural schematic diagram of the adapter body of the utility model;

[0024] Figure 4 This is a structural schematic diagram of the latch structure on the adapter body of the utility model;

[0025] Figure 5 It is a structural schematic diagram of the bayonet structure of the utility model;

[0026] Figure 6 It is a structural schematic diagram of the prior art of the utility model.

[0027] Explanations in the figure: 1. square top cover; 2. adapter body; 21. welding groove structure; 211. first sink groove; 212. metal spring; 213. second sink groove; 22. square welding hole; 23. bayonet structure. DETAILED DESCRIPTION

[0028] It is easy to understand that according to the technical solution of the utility model, without changing the essential spirit of the utility model, a person skilled in the art can propose a variety of interchangeable structural modes and implementation modes. Therefore, the following specific implementation modes and drawings are only exemplary descriptions of the technical solution of the utility model, and should not be regarded as the entirety of the utility model or as a limitation or restriction to the technical solution of the utility model.

[0029] like Figure 1-3 As shown, as a square aluminum shell battery adapter of the utility model, it includes an adapter body 2, and the adapter body 2 is arranged on a square top cover 1;

[0030] The adapter body 2 includes a head and a tail. A square welding hole 22 for sleeve-mounting the pole surface is provided at the head of the adapter body 2, and a welding groove structure 21 is provided at the tail of the adapter body 2.

[0031] The welding groove structure 21 includes a first groove 211 at the tab inlet, a second groove 213 at the tab limiter, and a metal spring 212 arranged between the first groove 211 and the second groove 213. The metal spring 212 protrudes upward, and the first groove 211 and the second groove 213 are located on both sides of the metal spring 212.

[0032] like Figure 3 As shown, the first sink 211 and the second sink 213 are located on the same plane, and the first sink 211 and the second sink 213 are located at opposite positions.

[0033] The depth of the first sink groove 211 and the second sink groove 213 is 15% to 20% of the overall thickness of the adapter body 2 , and is used to accommodate the winding core tabs and is interconnected.

[0034] The first sink groove 211 and the second sink groove 213 are arranged in a rectangular structure, which makes it more convenient to penetrate the tab.

[0035] like Figure 3 As shown, the metal spring 212 and the adapter body 2 are an integrated structure, and the thickness of the metal spring 212 is 10% to 15% of the thickness of the adapter body 2, which facilitates the insertion of the pole ear from the first groove 211, moving to the bottom of the metal spring 212, and finally inserting it into the second groove 213. The overall insertion process will not cause any obstruction, and the actual application effect is better.

[0036] The square welding hole 22 is located at the center of the head of the adapter body 2, and is sleeved on the protrusion of the pole part of the square top cover 1, leaving a gap of 0.1mm to 0.2mm with the protrusion, so as to facilitate the seam welding of the adapter body 2 and the top cover 1.

[0037] The adapter body 2 and the raised part of the pole part of the square top cover 1 are welded and connected.

[0038] like Figure 4-5 As shown, a square aluminum shell battery adapter also includes a pin structure 23, which cooperates with the pole pin on the square top cover 1. The cross-sectional shape of the pin structure 23 is a large head and a small waist, and is tightly connected to the pole on the square top cover 1, so that the adapter body 2 is not easy to deviate when welding with the pole.

[0039] When in use, the battery cell pole ear enters the welding with the adapter body 2 after completing the above-mentioned process. Under the action of the auxiliary mechanism, the pole ear enters the first groove 211, passes through the metal spring 212 to the second groove 213 of the pole ear limiting opening. At this time, the ultrasonic welding machine presses the welding tooth head on the metal spring 212, and the metal spring 212 moves downward together with the pole ear and is welded together with the bottom corresponding to the metal spring 212. After the above-mentioned process is completed, the adapter body 2 is placed on the pole surface on the square top cover 1 and nested in the square welding hole 22 of the adapter. At the same time, the pin structure 23 is tightly connected with the slot on the pole to ensure that the adapter body 2 does not deviate on the pole of the top cover 1. Finally, laser welding is performed around the square welding hole 22 to complete the whole process.

[0040] The technical scope of the present invention is not limited to the contents described above. Those skilled in the art can make various deformations and modifications to the above embodiments without departing from the technical concept of the present invention, and these deformations and modifications should all fall within the protection scope of the present invention.

Claims

1. A square aluminum shell battery adapter, characterized in that: It comprises an adapter plate body (2), wherein the adapter plate body (2) is arranged on a square top cover (1); The adapter plate body (2) comprises a head and a tail, a square welding hole (22) for sleeve-mounting the surface of the pole is provided at the head of the adapter plate body (2), and a welding groove structure (21) is provided at the tail of the adapter plate body (2); The welding groove structure (21) comprises a first sink groove (211) at the tab inlet, a second sink groove (213) at the tab limiter, and a metal spring (212) arranged between the first sink groove (211) and the second sink groove (213); the metal spring (212) protrudes upward, and the first sink groove (211) and the second sink groove (213) are located on both sides of the metal spring (212).

2. A square aluminum shell battery adapter according to claim 1, characterized in that: The first sink groove (211) and the second sink groove (213) are located on the same plane, and the first sink groove (211) and the second sink groove (213) are located at relative positions.

3. A square aluminum shell battery adapter according to claim 2, characterized in that: The depth of the first sink groove (211) and the second sink groove (213) is 15% to 20% of the overall thickness of the adapter plate body (2).

4. The square aluminum shell battery adapter according to claim 3, characterized in that: The first sink (211) and the second sink (213) are arranged in a rectangular structure.

5. The square aluminum shell battery adapter according to claim 4, characterized in that: The metal spring sheet (212) and the adapter plate body (2) are an integrated structure, and the thickness of the metal spring sheet (212) is 10% to 15% of the thickness of the adapter plate body (2).

6. A square aluminum shell battery adapter according to claim 5, characterized in that: The square welding hole (22) is located at the center of the head of the adapter body (2), is sleeved on the raised part of the pole part of the square top cover (1), and leaves a gap of 0.1mm to 0.2mm with the raised part.

7. A square aluminum shell battery adapter according to claim 6, characterized in that: The adapter plate body (2) and the raised portion of the pole portion of the square top cover (1) are welded and connected.

8. The square aluminum shell battery adapter according to claim 1, characterized in that: It also comprises a bayonet structure (23), wherein the bayonet structure (23) cooperates with the pole latch on the square top cover (1).

9. The square aluminum shell battery adapter according to claim 8, characterized in that: The cross-sectional shape of the bayonet structure (23) is a large head and a small waist, and is tightly connected to the pole on the square top cover (1).

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