CN212571162U

CN212571162U - Power battery's electric core apron, electric core, module and battery package

Info

Publication number: CN212571162U
Application number: CN202021258544.5U
Authority: CN
Inventors: 娄佳训; 渠雁晓; 史百胜; 于贺; 高顺航
Original assignee: Svolt Energy Technology Co Ltd
Current assignee: Svolt Energy Technology Co Ltd
Priority date: 2020-06-30
Filing date: 2020-06-30
Publication date: 2021-02-19
Anticipated expiration: 2030-06-30

Abstract

The utility model belongs to the power battery field discloses a power battery's electric core apron, electric core, module and battery package, electric core apron includes smooth aluminum sheet, utmost point post, sealing washer and welding piece, its characterized in that, be equipped with at least one through-hole of moulding plastics on the outer lane backing sheet of utmost point post the upper surface of sealing washer with edge part an organic whole of the lower surface of utmost point post is moulded plastics and is prolonged and link up the last insulating plastic circle of through-hole of moulding plastics. The utility model discloses an add the through-hole of moulding plastics on the outer lane support piece of utmost point post, go up insulating plastic circle through an organic whole mould plastics extend to should mould plastics in the through-hole, increased spacing and compact structure in the axial of utmost point post to make it form a whole with utmost point post to go up insulating plastic circle, can effectively avoid the rotation of utmost point post in the horizontal plane, and make the fixed more firm of utmost point post, strengthen its atress ability in each direction, effectively resist the vibration influence of vehicle.

Description

Power battery's electric core apron, electric core, module and battery package

Technical Field

The utility model belongs to the power battery field specifically, relates to a power battery's electric core apron, electric core, module and battery package.

Background

The core power source of the electric automobile is a power battery, so the performance of the power battery is particularly important. The battery core is used as a storage unit of a common power battery and mainly comprises a cover plate, an aluminum shell and a pole group. The structure of the cover plate is the most complex, and the cover plate mainly comprises a smooth aluminum sheet and a pole. The pole has the function of conducting an internal circuit and an external circuit, the structure of the pole is very important to the stress of the battery cell, and the height of the pole has important influence on the energy density of the battery cell.

Because the pole can adopt special shapes such as a round shape, the pole is only in circumferential surface contact with the upper insulating plastic ring, and after the pole is assembled, under the condition that the pole is subjected to external force, on one hand, the pole is easy to rotate in a horizontal plane, and the upper insulating plastic ring, the sealing ring and the like on the cover plate can be damaged, so that the safety and the service performance of the battery cell are influenced; on the other hand, utmost point post can produce the vibration in the axial, seriously influences structural stability and electrical connection's reliability, probably takes place the separation from and lead to whole car outage of utmost point post and module busbar when serious.

SUMMERY OF THE UTILITY MODEL

The utility model aims at providing a power battery's electricity core cover plate, through add the through-hole of moulding plastics on the outer lane support piece of utmost point post, go up insulating plastic circle through an organic whole mould plastics and prolong and should mould plastics in the through-hole, increased spacing and compact structure in the axial of utmost point post, so that it is whole with utmost point post formation to go up insulating plastic circle, can effectively avoid the rotation of utmost point post in the horizontal plane, and make the fixed more firm of utmost point post, strengthen its atress ability in all directions, effectively resist the vibration influence of vehicle.

In order to realize the above-mentioned purpose, first aspect, the utility model provides a power battery's electricity core apron, including smooth aluminum sheet, utmost point post, lower insulating plastic circle, sealing washer and welding piece, be equipped with at least one through-hole of moulding plastics on the outer lane backing sheet of utmost point post the upper surface of sealing washer with edge part an organic whole of the lower surface of utmost point post is moulded plastics and is prolonged and link up the last insulating plastic circle of through-hole of moulding plastics.

Furthermore, four injection molding through holes are circumferentially arranged on the outer ring supporting sheet of the pole at intervals of 90 degrees.

Furthermore, twelve injection molding through holes are circumferentially arranged on the outer ring supporting sheet of the pole at intervals of 30 degrees.

Further, the injection molding through hole is a cylindrical hole.

Further, the injection through hole is completely covered by the seal ring.

Further, the injection through hole is partially covered by the seal ring.

Furthermore, the lower insulating plastic ring is an insulating plastic ring formed by integrally forming the anode and the cathode.

In a second aspect, the present invention provides a power battery cell, including any one of the above technical solutions.

The third aspect, the utility model provides a power battery module, including the second aspect power battery electricity core.

In a fourth aspect, the present invention provides a power battery pack, including the third aspect, a power battery module.

Through above-mentioned technical scheme, through add the through-hole of moulding plastics on the outer lane support piece of utmost point post, go up insulating plastic circle through an organic whole mould plastics and extend to this through-hole of moulding plastics, increased spacing and compact structure in the axial of utmost point post to make it form a whole with utmost point post to go up insulating plastic circle, can effectively avoid the rotation of utmost point post in the horizontal plane, and make the fixed more firm of utmost point post, strengthen its atress ability in each direction, effectively resist the vibration influence of vehicle.

Other features and advantages of the present invention will be described in detail in the detailed description which follows.

Drawings

Fig. 1 is an exploded view of an embodiment of a cell cover plate of a power battery of the present invention;

fig. 2 is a top view of an embodiment of a cell cover plate of the power battery of the present invention;

FIG. 3 is a sectional view taken along line A-A of FIG. 2;

FIG. 4 is an enlarged partial view of the left end of FIG. 3;

fig. 5 is a schematic structural diagram of a terminal post in an embodiment of a cell cover plate of the power battery of the present invention.

Description of the reference numerals

Polishing an aluminum sheet 1; a pole 2; injection molding through holes 21; an upper insulating plastic ring 3; a lower insulating plastic ring 4; a seal ring 5; and welding the sheet 6.

Detailed Description

The following detailed description of the embodiments of the present invention will be made with reference to the accompanying drawings. It is to be understood that the description of the embodiments herein is for purposes of illustration and explanation only and is not intended to limit the invention.

It should be noted that, in the following description of the technical solutions of the present invention, the terms "upper" and "lower" are used when indicating the orientation or the positional relationship based on the orientation or the positional relationship shown in the drawings, and are only for convenience of describing the present invention and simplifying the description, but not for indicating or implying that the indicated device or element must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as limiting the present invention.

In the present invention, "axial" refers to the direction in which the axis of a certain component extends, and "circumferential" refers to the direction around the outer circumference of a certain component.

As shown in fig. 1-5, the utility model discloses an embodiment of power battery's electric core apron, including smooth aluminum sheet 1, utmost point post 2, lower insulating plastic ring 4, sealing washer 5 and welding piece 6, be equipped with at least one through-hole 21 of moulding plastics on utmost point post 2's the outer lane backing sheet the upper surface of sealing washer 5 with the edge part an organic whole of utmost point post 2's lower surface is moulded plastics and is prolonged and link up the last insulating plastic ring 3 of through-hole 21 of moulding plastics. Last insulating plastic circle 3 after integrative injection moulding like this includes the axial plastic small cylinder of at least one embedding utmost point post 2, this axial plastic small cylinder is filled up the through-hole 21 of moulding plastics, can restrict the rotation of utmost point post 2 in the horizontal plane, the whole fixed power of insulating plastic circle 3 to utmost point post 2 has also been increased, make utmost point post 2 withstand external force's ability strengthened by a wide margin, can effectively resist the external force of the various directions that the vehicle travel in-process leads to by the vibration, guarantee power battery's safety in utilization.

In this embodiment, the lower insulating plastic ring 4 is a structure formed by integrally forming the positive electrode and the negative electrode, so that the radial displacement of each part on the pole 2 is conveniently controlled within an allowable range, and the assembly precision is favorably improved.

It should be noted that the injection molding temperature of the upper insulating plastic ring 3 is lower than the melting temperature of the sealing ring 5, and the structure of the sealing ring 5 is not damaged in the injection molding process.

It should be noted that the above-mentioned terminal post 2, the upper insulating plastic ring 3, the lower insulating plastic ring 4, the sealing ring 5 and the welding sheet 6 are all arranged in pairs according to the positive and negative electrodes, and the above description covers the corresponding components of the positive electrode part and the negative electrode part, and is not separately described one by one, and the same applies below.

The utility model discloses a some embodiments of power battery's electric core apron, the quantity of the through-hole 21 of moulding plastics can be 1 respectively, 4 of interval 90 circumference settings and 12 of interval 30 circumference settings, certainly also can be other quantity. The more the quantity of the through holes 21 of moulding plastics, then the axial plastic small cylinder that imbeds utmost point post 2 on the insulating plastic circle 3 that integrative injection moulding formed is also more, and utmost point post 2 prevents that rotation performance is better, and utmost point post 2's fixed more firm, and the ability of tolerating external force is stronger more. Preferably, the injection molding through hole 21 is a cylindrical hole, which is convenient for processing and calculating the injection amount of the plastic.

The utility model discloses an embodiment of power battery's electric core apron, as shown in fig. 4, the through-hole 21 of moulding plastics is covered by sealing washer 5 part, then have some at the upper surface solidification shaping of sealing washer 5 by the plastic that this through-hole 21 of moulding plastics pours into, another part continues down the flow through the hole that is not covered by sealing washer 5, the little cylinder of plastic in the through-hole 21 of moulding plastics like this is connected with the plastic outside the hole and is formed a closed loop structure, the downthehole little cylindrical antitorque ability of plastic of reinforcing, the anti-rotation performance of further improvement utmost point post 2. Of course, the injection through hole 21 can be covered by the sealing ring 5, and the plastic injected from the injection through hole 21 is solidified and molded on the upper surface of the sealing ring 5, so that the plastic consumption can be saved, and the cost can be reduced.

On the basis of above-mentioned power battery's electric core cover plate embodiment, the utility model discloses in the embodiment of the power battery electricity core of second aspect, including the aforesaid power battery's electric core cover plate, all beneficial effects that the technical scheme of consequently having above-mentioned power battery's electric core cover plate embodiment at least brought. In a similar way, the utility model discloses the power battery module of third aspect includes the power battery electricity core of second aspect, and the power battery package of fourth aspect includes the power battery module of third aspect, also has all beneficial effects that the technical scheme of above-mentioned power battery's electric core cover plate embodiment brought at least.

The preferred embodiments of the present invention have been described in detail with reference to the accompanying drawings, but the present invention is not limited thereto. In the technical idea scope of the present invention, it is possible to provide the technical solution of the present invention with a plurality of simple modifications, including combining each specific technical feature in any suitable manner, and in order to avoid unnecessary repetition, the present invention does not provide additional description for various possible combinations. These simple variations and combinations should also be considered as disclosed in the present invention, all falling within the scope of protection of the present invention.

Claims

1. The utility model provides a power battery's electric core apron, includes smooth aluminum sheet (1), utmost point post (2), lower insulating plastic circle (4), sealing washer (5) and welding piece (6), its characterized in that, be equipped with at least one through-hole (21) of moulding plastics on the outer lane backing sheet of utmost point post (2) the upper surface of sealing washer (5) with the edge part an organic whole of the lower surface of utmost point post (2) is moulded plastics and is prolonged and link up the last insulating plastic circle (3) of through-hole (21) of moulding plastics.

2. The battery core cover plate of the power battery according to claim 1, wherein four injection molding through holes (21) are circumferentially arranged on the outer ring support plate of the pole (2) at intervals of 90 degrees.

3. The battery core cover plate of the power battery according to claim 1, wherein twelve injection molding through holes (21) are circumferentially arranged on the outer ring support plate of the pole (2) at intervals of 30 degrees.

4. The battery core cover plate of the power battery according to claim 1, wherein the injection-molded through hole (21) is a cylindrical hole.

5. The cell cover plate of a power battery according to claim 1, characterized in that the injection-molded through hole (21) is completely covered by the sealing ring (5).

6. The cell cover plate of a power battery according to claim 1, characterized in that the injection-molded through hole (21) is partially covered by the sealing ring (5).

7. The battery core cover plate of the power battery according to any one of claims 1 to 6, wherein the lower insulating plastic ring (4) is an insulating plastic ring formed by integrally forming a positive electrode and a negative electrode.

8. A power battery cell, characterized by comprising the cell cover plate of the power battery of any one of claims 1 to 7.

9. A power battery module, characterized by comprising the power battery cell of claim 8.

10. A power battery pack, characterized by comprising the power battery module of claim 9.