A new energy battery cover plate new riveting structure

Abstract

The utility model discloses a new energy battery cover plate new riveting structure, including top cover piece, lower plastic, pole, upper plastic, platen, positive pole connecting piece and negative pole connecting piece, the lower plastic is installed in top cover piece bottom, is used for making battery cover plate and electric core isolation, the both ends of top cover piece and lower plastic all are provided with first through -hole, are used for installing pole, two the pole is respectively positive pole and negative pole, and the pole top is provided with the baffle, is used for fixing pole in first through -hole, the outside of first through -hole is the first recess that sets up top cover piece upper surface, is used for installing upper plastic. The utility model discloses guaranteeing the structure reliability simultaneously, and the positive pole and negative pole pin connecting piece is contained in the battery cover plate inside, need not increase the process that the positive pole and negative pole pin connecting piece welds on the battery cover plate, and this is favorable for reducing the time and cost of new energy battery manufacturing.

Description

Technical Field

[0001] This utility model relates to the field of power battery cover production technology, and in particular to a new riveting structure for a new energy battery cover. Background Technology

[0002] In recent years, driven by the concept of "green and sustainable development," the new energy vehicle market has continued to expand rapidly, leading to a surge in the new energy battery market. Currently, new energy batteries generally adopt a square aluminum shell structure, consisting of a shell and a battery cover. The battery cover provides a sealed space for the battery and also serves as the energy transfer medium; its structure directly affects the reliability and manufacturing cost of the battery pack. Based on these issues, it is necessary to design a reliable, simple, and low-cost new energy battery cover to improve the energy density of new energy batteries and reduce manufacturing costs.

[0003] Currently, the traditional cover plate structure commonly used in new energy batteries does not include the positive and negative terminal pin connecting pieces inside the battery cover plate. The positive and negative terminal pin connecting pieces need to be soldered onto the battery cover plate using a separate process, which increases additional time and cost. Utility Model Content

[0004] To address the issue that the positive and negative terminal pin connection pieces in the traditional cover plate structure require additional welding processes to be applied to the battery cover plate, which increases time and cost, this invention provides a new riveting structure for the cover plate of a new energy battery.

[0005] To achieve the above objectives, this utility model provides the following technical solution: A novel riveting structure for a new energy battery cover includes a top cover sheet, a lower plastic piece, electrode posts, an upper plastic piece, a pressure plate, a positive electrode connecting piece, and a negative electrode connecting piece. The lower plastic piece is installed at the bottom of the top cover sheet to isolate the battery cover sheet from the battery cell. Both ends of the top cover sheet and the lower plastic piece have first through holes for installing the electrode posts. The two electrode posts are a positive electrode post and a negative electrode post, and each electrode post has a stop block at its top to fix it within the first through hole. The outer side of the first through hole is a first groove on the upper surface of the top cover sheet. The upper plastic is used for mounting, and the upper plastic has a second through hole in the middle for the electrode post to pass through. The outer side of the second through hole is a second groove on the upper surface of the upper plastic for mounting a stop block. The lower plastic has pressure plates at both ends on its lower surface. The pressure plates have a third through hole in the middle for the electrode post to pass through. The outer side of the third through hole is a third groove on the lower surface of the pressure plates for mounting a positive electrode connecting piece or a negative electrode connecting piece. One end of the positive electrode connecting piece and the negative electrode connecting piece are respectively provided with a fourth through hole and a fifth through hole for the electrode post to pass through.

[0006] Preferably, a sealing ring is provided between the pole post and the first through hole for sealing between the top cover plate and the pole post.

[0007] Preferably, the first groove is a rectangular groove with three rounded corners and one beveled corner. The shape of the upper plastic is consistent with the first groove to prevent the upper plastic from rotating.

[0008] Preferably, both the positive electrode connecting piece and the negative electrode connecting piece are bent in the middle so that the two sides of the bend are respectively attached to the pressure plate and the lower plastic surface; the positive electrode connecting piece is provided with a notch away from the fourth through hole so that it avoids the liquid injection port on the battery cover.

[0009] Compared with the prior art, the beneficial effects of this utility model are as follows: while ensuring structural reliability, the positive and negative terminal pin connecting pieces are included inside the battery cover plate, eliminating the need for the additional process of welding the positive and negative terminal pin connecting pieces to the battery cover plate, which helps to reduce the time and cost of new energy battery manufacturing. Attached Figure Description

[0010] Figure 1 This is a three-dimensional structural diagram of the front and back sides of an embodiment of this utility model; Figure 2 This is a schematic diagram of the exploded structure of the reverse side of an embodiment of this utility model; Figure 3 This is a cross-sectional structural diagram of an embodiment of the present utility model; Figure 4 This is a three-dimensional structural diagram of the top cover sheet according to an embodiment of the present utility model; Figure 5 This is a three-dimensional structural diagram of the pole post according to an embodiment of the present utility model; Figure 6 This is a three-dimensional structural diagram of the plastic in an embodiment of the present invention; Figure 7 This is a three-dimensional structural diagram of the pressure plate in an embodiment of the present utility model; Figure 8 This is a three-dimensional structural diagram of the positive electrode connecting piece according to an embodiment of the present invention; Figure 9 This is a three-dimensional structural diagram of the negative electrode connecting piece according to an embodiment of the present utility model; Figure 10 This is a schematic diagram showing the state of the pole post after assembly and before riveting in an embodiment of this utility model.

[0011] In the diagram: 1. Top cover plate, 101. First through hole, 102. First groove, 2. Lower plastic, 3. Terminal post, 301. Stop block, 4. Upper plastic, 401. Second through hole, 402. Second groove, 5. Sealing ring, 6. Pressure plate, 601. Third through hole, 602. Third groove, 7. Positive electrode connection piece, 701. Fourth through hole, 702. Notch, 8. Negative electrode connection piece, 801. Fifth through hole, 9. Explosion-proof valve, 10. Protective patch. Detailed Implementation

[0012] In the description of this utility model, it should be understood that the terms "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", "outer", "vertical", "horizontal", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0013] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.

[0014] like Figures 1 to 9 As shown, this embodiment of the utility model includes a top cover plate 1, a lower plastic piece 2, a terminal post 3, an upper plastic piece, a pressure plate 6, a positive electrode connecting piece 7, and a negative electrode connecting piece 8. The lower plastic piece 2 is installed at the bottom of the top cover plate 1 to isolate the battery cover from the battery cell. Both ends of the top cover plate 1 and the lower plastic piece 2 are provided with first through holes 101 for installing the terminal post 3. The two terminal posts 3 are respectively the positive terminal post and the negative terminal post, and a stop block 301 is provided at the top of the terminal post 3 to fix the terminal post 3 within the first through hole 101. The outer side of the first through hole 101 is a first groove 102 provided on the upper surface of the top cover plate 1 for installing the upper plastic piece 4. The upper plastic 4 has a second through hole 401 in the middle for the electrode post 3 to pass through, and the outer side of the second through hole 401 is a second groove 402 on the upper surface of the upper plastic 4 for fitting the stop block 301; both ends of the lower surface of the lower plastic 2 are provided with pressure plates 6, the middle of the pressure plate 6 has a third through hole 601 for the electrode post 3 to pass through, and the outer side of the third through hole 601 is a third groove 602 on the lower surface of the pressure plate 6 for fitting the positive electrode connecting piece 7 or the negative electrode connecting piece 8; one end of the positive electrode connecting piece 7 and the negative electrode connecting piece 8 is provided with a fourth through hole 701 and a fifth through hole 801 for the electrode post 3 to pass through, respectively.

[0015] Preferably, a sealing ring 5 is provided between the pole post 3 and the first through hole 101 for sealing between the top cover plate 1 and the pole post 3.

[0016] Preferably, the first groove 102 is a rectangular groove with three rounded corners and one beveled corner. The shape of the upper plastic 4 is consistent with the first groove 102 to prevent the upper plastic 4 from rotating.

[0017] Preferably, the positive electrode connecting piece 7 and the negative electrode connecting piece 8 are both bent in the middle so that the two sides of the bend are respectively attached to the surface of the pressure plate 6 and the lower plastic 2; the positive electrode connecting piece 7 is provided with a notch 702 away from the fourth through hole 701 so that it avoids the liquid injection port on the battery cover.

[0018] like Figure 10 As shown, the various components of the battery cover are assembled. First, the lower plastic 2 and the top cover 1 are attached and installed. Then, the terminal post 3 passes through the second through hole 401 on the upper plastic 4, and the stop block 301 is fitted into the second groove 402. Next, the upper plastic 4 is fitted into the first groove 102. At this time, the terminal post 3 passes through the first through hole 101 on the top cover 1 and the lower plastic 2. Then, the sealing ring 5 is fitted between the terminal post 3 and the top cover 1. Then, the pressure plate 6 is fitted onto the terminal post 3, and the positive electrode connecting piece 7 and the negative electrode connecting piece 8 are fitted onto the positive electrode post and the negative electrode post respectively. Finally, the bottom end of the terminal post 3 is riveted to deform it and complete the riveting. Figure 3 As shown.

[0019] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A novel riveting structure for a new energy battery cover, characterized in that: The battery includes a top cover, a lower plastic insert, terminals, an upper plastic insert, a pressure plate, a positive electrode connector, and a negative electrode connector. The lower plastic insert is installed at the bottom of the top cover and is used to isolate the battery cover from the battery cell. Both ends of the top cover and the lower plastic insert have first through holes for installing the terminals. The two terminals are a positive terminal and a negative terminal, and each terminal has a stop block at its top to fix it within the first through hole. The outer side of the first through hole has a first groove on the upper surface of the top cover for installing the upper plastic insert. The upper plastic has a second through hole in the middle for the electrode post to pass through, and the outer side of the second through hole is a second groove on the upper surface of the upper plastic for fitting a stop block; both ends of the lower surface of the lower plastic are provided with pressure plates, the middle of the pressure plates has a third through hole for the electrode post to pass through, and the outer side of the third through hole is a third groove on the lower surface of the pressure plates for fitting a positive electrode connecting piece or a negative electrode connecting piece; one end of the positive electrode connecting piece and the negative electrode connecting piece are respectively provided with a fourth through hole and a fifth through hole for the electrode post to pass through.

2. The new riveting structure for a new energy battery cover plate according to claim 1, characterized in that: A sealing ring is provided between the pole post and the first through hole for sealing between the top cover plate and the pole post.

3. The new riveting structure for a new energy battery cover plate according to claim 1, characterized in that: The first groove is a rectangular groove with three rounded corners and one beveled corner. The shape of the upper plastic is consistent with the first groove to prevent the upper plastic from rotating.

4. The new riveting structure for a new energy battery cover plate according to claim 1, characterized in that: Both the positive electrode connecting piece and the negative electrode connecting piece are bent in the middle so that the two sides of the bend are respectively attached to the pressure plate and the lower plastic surface; the positive electrode connecting piece is provided with a notch away from the fourth through hole so that it avoids the liquid injection port on the battery cover.

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