Energy storage battery cover

Abstract

The utility model relates to the technical field of energy storage battery structures, in particular to an energy storage battery cover, which is provided with a welding groove for placing a positive electrode plate and a negative electrode plate respectively, each side wall of the welding groove is provided with a positioning rib, and a gap is reserved between the top of each positioning rib and a groove opening of the welding groove. According to the utility model, each side wall of the welding groove is additionally provided with the positioning rib, and the positioning rib abuts against the edge of the electrode plate, so that the edge of the electrode plate can be prevented from being too close to a certain side wall of the welding groove, and the side walls of the welding groove are prevented from glue melting to the greatest extent. A gap is reserved between the top of the positioning rib and the notch of the welding groove, the gap does not affect the placement of the welding piece in the welding groove, and the gap can absorb melt glue of the positioning rib to overflow from the notch of the welding groove in the welding process.

Description

TECHNICAL FIELD

[0001] The utility model relates to energy storage battery structure technical field especially relates to a kind of energy storage battery cover. BACKGROUND

[0002] Energy storage battery cover is one of the important components of energy storage battery, and its main role is to prevent electrolyte leakage. At present, the welding of energy storage battery cover and electrode sheet is to set two welding grooves for positioning and placing positive electrode sheet and negative electrode sheet on the energy storage battery cover. In order to ensure that the electrode sheet can be normally placed into the welding groove, the size of the welding groove will be larger than that of the electrode sheet, so that after the electrode sheet is placed into the welding groove, the electrode sheet is easy to deviate to one side wall of the welding groove, which causes the side wall to melt glue during the electrode sheet welding process, resulting in the part being higher than the assembly surface of the energy storage battery cover. Finally, it leads to abnormal electrical performance of the product during the battery rear end assembly process, which has hidden dangers. UTILITY MODEL CONTENTS

[0003] The technical problem to be solved by the utility model is to provide an energy storage battery cover that can maximize the avoidance of melting glue on the side wall of the welding groove.

[0004] In order to solve the above technical problem, the utility model adopts the technical scheme of an energy storage battery cover having welding grooves for placing positive electrode sheet and negative electrode sheet respectively, and positioning ribs are arranged on each side wall of the welding groove. There is a gap between the top of the positioning rib and the slot opening of the welding groove.

[0005] Further, the gap between the top of the positioning rib and the slot opening of the welding groove is 0.3mm to 0.4mm.

[0006] Further, the width of the top of the positioning rib to the bottom of the positioning rib gradually increases.

[0007] Further, the bottom of the positioning rib is connected to the groove bottom of the welding groove.

[0008] Further, the top of the positioning rib is provided with a guide slope.

[0009] Further, one end surface of the positioning rib connected to the side wall of the welding groove is a connecting part, the other end surface of the positioning rib away from the connecting part is an electrode sheet abutting part, and the width of the connecting part to the electrode sheet abutting part gradually decreases.

[0010] Further, the welding groove is composed of a first side wall, a second side wall, a third side wall, a fourth side wall and a foolproof side wall. The two ends of the first side wall are connected to the second side wall and the third side wall respectively, the first side wall and the second side wall form a right angle, and the first side wall and the third side wall form a right angle.

[0011] The third side wall and the fourth side wall are connected and form a right angle.

[0012] The two ends of the fool-proof side wall are connected with the second side wall and the fourth side wall respectively, the fool-proof side wall and the second side wall form an obtuse angle, and the fool-proof side wall and the fourth side wall form an obtuse angle.

[0013] Further, the welding groove for placing the positive electrode sheet and the welding groove for placing the negative electrode sheet are mirror images of each other on the energy storage battery cover.

[0014] The utility model discloses beneficial effect lies in: the positioning rib is additionally arranged on each side wall of the welding groove, and the edge of the electrode sheet is abutted by the positioning rib, can prevent the edge of the electrode sheet from being too close to the side wall of the welding groove, thereby avoiding the side wall of the welding groove from melting glue to the greatest extent. BRIEF DESCRIPTION OF DRAWINGS

[0015] Figure 1 It is a top view structural schematic diagram of the utility model one kind energy storage battery cover;

[0016] Figure 2 It is a welding groove internal structure schematic diagram of the utility model one kind energy storage battery cover;

[0017] Label explanation:

[0018] 1, welding groove;11, first side wall;12, second side wall;13, third side wall;14, fourth side wall;15, fool-proof side wall;

[0019] 2, positioning rib;21, guide inclined surface. DETAILED DESCRIPTION

[0020] In order to explain the technical content, the purpose and effect of the utility model in detail, the following will be explained by combining with the embodiment and the drawings.

[0021] Please refer to Figure 1 And Figure 2 The utility model one kind energy storage battery cover, has the welding groove 1 of placing positive electrode sheet and negative electrode sheet respectively, the positioning rib 2 is provided on each side wall of the welding groove 1, and the interval is left between the top of the positioning rib 2 and the slot of the welding groove 1.

[0022] Working principle: the positioning rib 2 abuts against the edge of the electrode sheet, which can prevent the edge of the electrode sheet from being too close to a side wall of the welding groove 1, thereby avoiding the melting of the side wall of the welding groove 1 to the greatest extent. Since the positioning rib 2 is close to or in contact with the edge of the electrode sheet, the positioning rib 2 will melt during welding. However, since there is a gap between the top of the positioning rib 2 and the slot of the welding groove 1, the gap can absorb the overflow of the melted positioning rib 2 from the slot of the welding groove 1, and the gap does not affect the placement of the welding sheet in the welding groove 1.

[0023] In an alternative embodiment, as shown in Figure 2 , a gap A is left between the top of the positioning rib 2 and the slot of the welding groove 1. Preferably, A is 0.3mm to 0.4mm. This can satisfy the absorption of the melted positioning rib 2 and ensure the normal placement of the welding sheet in the welding groove 1.

[0024] In an alternative embodiment, as shown in Figure 2 , the width of the positioning rib 2 gradually increases from the top to the bottom of the positioning rib 2, which can enhance the strength of the positioning rib 2.

[0025] In an alternative embodiment, as shown in Figure 2 , the bottom of the positioning rib 2 is connected to the bottom of the welding groove 1. This not only facilitates the demolding of the injection mold and reduces the development difficulty of the injection mold, but also ensures the strength of the positioning rib 2.

[0026] In an alternative embodiment, as shown in Figure 2 , the top of the positioning rib 2 is provided with a guide slope 21. The guide slope 21 helps the electrode sheet enter the space enclosed by the positioning rib 2.

[0027] In an alternative embodiment, as shown in Figure 2 , one end surface of the positioning rib 2 connected to the side wall of the welding groove 1 is a connecting portion, the other end surface of the positioning rib 2 away from the connecting portion is an electrode sheet abutting portion, and the width of the connecting portion to the electrode sheet abutting portion gradually decreases. Since the abutting portion is the end surface of the positioning rib 2 closest to the edge of the electrode sheet, gradually reducing the width of the connecting portion to the electrode sheet abutting portion can not only reduce the amount of melting of the positioning rib 2, but also ensure the strength of the positioning rib 2.

[0028] In an embodiment, as shown in Figure 1As shown, the welding groove 1 is composed of a first side wall 11, a second side wall 12, a third side wall 13, a fourth side wall 14 and a fool-proof side wall 15; two ends of the first side wall 11 are connected with the second side wall 12 and the third side wall 13 respectively, the first side wall 11 and the second side wall 12 form a right angle, and the first side wall 11 and the third side wall 13 form a right angle; the third side wall 13 is connected with the fourth side wall 14, and the third side wall 13 and the fourth side wall 14 form a right angle; two ends of the fool-proof side wall 15 are connected with the second side wall 12 and the fourth side wall 14 respectively, the fool-proof side wall 15 and the second side wall 12 form an obtuse angle, and the fool-proof side wall 15 and the fourth side wall 14 form an obtuse angle. The electrode piece is made of a corresponding structure according to the shape of the welding groove 1, so that the worker can avoid placing the electrode piece reversely into the welding groove 1 by using the fool-proof side wall 15.

[0029] In one embodiment, referring to Figure 1 As shown, the welding groove 1 for placing the positive electrode piece and the welding groove 1 for placing the negative electrode piece are mirror images of each other on the energy storage battery cover, so that the positive electrode piece and the negative electrode piece can be prevented from being placed into the wrong welding groove 1.

[0030] The above is only an embodiment of the present application, and does not limit the patent range of the present application, and any equivalent transformation or direct or indirect application in the related technical field by using the content of the present application is also included in the patent protection range of the present application.

Claims

1. An energy storage battery cover having welding grooves for placing positive and negative electrode sheets, characterized in that: A positioning rib is provided on each side wall of the welding groove, and a gap is left between the top of the positioning rib and the notch of the welding groove.

2. The energy storage battery cover according to claim 1, characterized in that: A gap of 0.3 mm to 0.4 mm is left between the top of the positioning rib and the notch of the welding groove.

3. The energy storage battery cover according to claim 1, characterized in that: The width of the positioning rib gradually increases from the top to the bottom of the positioning rib.

4. The energy storage battery cover according to claim 1 or 3, characterized in that: The bottom of the positioning rib is connected to the bottom of the welding groove.

5. The energy storage battery cover according to claim 1, characterized in that: A guide slope is provided on the top of the positioning rib.

6. The energy storage battery cover according to claim 1, characterized in that: One end surface of the positioning rib connected to the side wall of the welding groove is a connecting portion, and one end surface of the positioning rib away from the connecting portion is a pole piece abutting portion. The width from the connecting portion to the pole piece abutting portion gradually decreases.

7. The energy storage battery cover according to claim 1, characterized in that: The welding groove is composed of a first side wall, a second side wall, a third side wall, a fourth side wall and a fool-proof side wall; the two ends of the first side wall are respectively connected to the second side wall and the third side wall, the first side wall and the second side wall form a right angle, and the first side wall and the third side wall form a right angle; The third side wall is connected to the fourth side wall, and the third side wall and the fourth side wall form a right angle; The two ends of the fool-proof side wall are respectively connected to the second side wall and the fourth side wall. The fool-proof side wall forms an obtuse angle with the second side wall, and the fool-proof side wall forms an obtuse angle with the fourth side wall.

8. The energy storage battery cover according to claim 7, characterized in that: The welding groove for placing the positive electrode sheet and the welding groove for placing the negative electrode sheet are mirror images of each other on the energy storage battery cover.

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