CN217443511U

CN217443511U - A compress tightly frock and electric core subassembly for electric core

Info

Publication number: CN217443511U
Application number: CN202220698852.2U
Authority: CN
Inventors: 李益俊; 陆巍巍; 温业勇; 姚立锋; 陈斌斌; 王明旺
Original assignee: Sunwoda Electric Vehicle Battery Co Ltd
Current assignee: Xinwangda Power Technology Co ltd
Priority date: 2022-03-28
Filing date: 2022-03-28
Publication date: 2022-09-16
Anticipated expiration: 2032-03-28

Abstract

The utility model provides a compress tightly frock and electric core subassembly for electric core, wherein, a frock that compresses tightly for electric core includes: a substrate; the detection piece comprises a first detection piece and a second detection piece, wherein the first detection piece is abutted and matched with the positive end of the battery cell, the second detection piece is abutted and matched with the negative end of the battery cell, and the first detection piece and the second detection piece are arranged below the base body at intervals; the pressing structure can be arranged below the base body in a floating mode, is located between the first detection piece and the second detection piece and is abutted to the patch on the battery cell. The technical scheme of this application has solved the paster on the electric core among the correlation technique effectively and has had the problem of perk.

Description

A compress tightly frock and electric core subassembly for electric core

Technical Field

The utility model relates to a battery technology field particularly, relates to a compress tightly frock and electric core subassembly for electric core.

Background

Power batteries are receiving increasing attention as a green energy source. The method has the greatest advantage of greatly reducing the emission of automobile exhaust, and plays an important role in environmental protection. The lithium ion battery combines the single battery cores into a module with larger capacity in a series-parallel connection mode, and then forms a battery pack with the module in the series-parallel connection mode to provide power energy for the whole vehicle. Before the battery cell is assembled into a module, the voltage and the internal resistance of the cell need to be detected, and usually, metal probes are respectively contacted with the positive pole and the negative pole for measurement. In addition, a patch is arranged on the battery core, and the top patch mainly plays a role in insulation.

However, the battery core is transferred to the module process after being inserted, the adhesive property of the glue of the paster is insufficient in the process, the risk of tilting exists, and great hidden danger exists for the safety of the module.

SUMMERY OF THE UTILITY MODEL

A primary object of the utility model is to provide a compress tightly frock and electric core subassembly for electric core to solve the problem that the paster on the electric core among the correlation technique has the perk.

In order to achieve the above object, according to the utility model discloses an aspect provides a frock that compresses tightly for electric core, include: a substrate; the detection piece comprises a first detection piece and a second detection piece, wherein the first detection piece is abutted and matched with the positive end of the battery cell, the second detection piece is abutted and matched with the negative end of the battery cell, and the first detection piece and the second detection piece are arranged below the base body at intervals; the compaction structure can be arranged below the base body in a floating mode, and the compaction structure is matched with the paster on the battery cell in an abutting mode.

Furthermore, the pressing structure comprises an elastic part connected to the base body, and the pressing structure further comprises a pressing block arranged at one end, far away from the base body, of the elastic part.

Furthermore, the pressure piece is welded or riveted or screwed or adhesively connected with the free end of the elastic piece.

Further, the pressing block is made of a first insulating material.

Furthermore, the compressing structure further comprises a pressing plate arranged at one end, far away from the base body, of the elastic part, and a first avoiding hole for avoiding the positive end and a second avoiding hole for avoiding the negative end are formed in the pressing plate.

Furthermore, the pressing plate is made of a second insulating material.

Further, the pressure plate is welded or riveted or screwed or adhesively connected to the free end of the spring.

Further, the compressing tool further comprises a protecting sleeve which is sleeved outside the compressing structure and connected to the base body, and the length L1 of the protecting sleeve is smaller than or equal to the length L2 of one of the first detecting piece and the second detecting piece.

Further, the first detection piece comprises a first screw rod arranged below the base body and a first metal piece arranged on the first screw rod, and the second detection piece comprises a second screw rod arranged below the base body and a second metal piece arranged on the second screw rod.

According to the utility model discloses an on the other hand provides an electricity core subassembly, including electric core and compressing tightly the frock, be provided with the paster on the electric core, compress tightly the frock for foretell the frock that compresses tightly that is used for electric core, compress tightly the first detector of frock and the positive terminal butt cooperation of electric core, compress tightly the second detector of frock and the negative pole end butt cooperation of electric core, compress tightly the compact structure of frock and support the cooperation of pushing up with the paster on the electric core.

Use the technical scheme of the utility model for the frock that compresses tightly of electricity core includes: base member, detection piece and compact structure. The detection piece comprises a first detection piece matched with the positive electrode end of the battery cell in an abutting mode and a second detection piece matched with the negative electrode end of the battery cell in an abutting mode. The first detecting member and the second detecting member are disposed at an interval below the base. The compaction structure can be arranged below the base body in a floating mode, and the compaction structure is matched with the paster on the battery cell in an abutting mode. Like this, the positive terminal butt of first detection piece and electric core is measured with voltage and the internal resistance from the positive terminal to electric core, and the negative pole end butt of second detection piece and electric core is measured with voltage and the internal resistance to following negative pole pair electric core, and the cooperation of supporting is supported to the paster on compact structure and the electric core simultaneously, and compact structure can compress tightly the paster to the paster application of force, compact structure compresses tightly the paster to make the paster glue on electric core, prevent the paster perk, and then can reduce fraction defective and the risk that the paster perk caused. Therefore, the technical scheme of this application can solve the problem that the paster on the electric core among the correlation technique has the perk.

Drawings

The accompanying drawings, which form a part of the present application, are included to provide a further understanding of the invention, and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description serve to explain the invention and not to limit the invention. In the drawings:

fig. 1 shows a schematic three-dimensional structure diagram of a first embodiment of a pressing tool for an electrical core according to the present invention, in which a patch is stuck on an electrical core;

fig. 2 shows a schematic front view of the pressing tool for a battery cell of fig. 1;

fig. 3 shows a schematic front view of a second embodiment of the pressing tool for battery cells according to the present invention;

fig. 4 shows a schematic top view of the pressure plate of the pressing tool for a cell of fig. 3.

Wherein the figures include the following reference numerals:

1. an electric core; 2. a positive terminal; 3. a negative terminal; 4. pasting a piece; 10. a substrate; 20. a first detecting member; 21. a first screw; 22. a first metal piece; 30. a second detecting member; 31. a second screw; 32. a second metal piece; 40. a compression structure; 41. an elastic member; 42. briquetting; 43. pressing a plate; 431. a first avoidance hole; 432. a second avoidance hole; 50. a protective sleeve.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. The following description of at least one exemplary embodiment is merely illustrative in nature and is in no way intended to limit the invention, its application, or uses. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts belong to the protection scope of the present invention.

It is noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of example embodiments according to the present application. As used herein, the singular forms "a", "an" and "the" are intended to include the plural forms as well, and it should be understood that when the terms "comprises" and/or "comprising" are used in this specification, they specify the presence of stated features, steps, operations, devices, components, and/or combinations thereof, unless the context clearly indicates otherwise.

Unless specifically stated otherwise, the relative arrangement of the components and steps, the numerical expressions, and numerical values set forth in these embodiments do not limit the scope of the present invention. Meanwhile, it should be understood that the sizes of the respective portions shown in the drawings are not drawn in an actual proportional relationship for the convenience of description. Techniques, methods, and apparatus known to those of ordinary skill in the relevant art may not be discussed in detail but are intended to be part of the specification where appropriate. In all examples shown and discussed herein, any particular value should be construed as merely illustrative, and not limiting. Thus, other examples of the exemplary embodiments may have different values. It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus, once an item is defined in one figure, further discussion thereof is not required in subsequent figures.

As shown in fig. 1 and fig. 2, a pressing tool for a battery cell according to a first embodiment includes: base 10, test element and hold-down structure 40. The detection piece comprises a first detection piece 20 in butt fit with the positive electrode end 2 of the battery cell 1 and a second detection piece 30 in butt fit with the negative electrode end 3 of the battery cell 1. The first and

second sensing members

20 and 30 are disposed under the base 10 with a space therebetween. The compressing structure 40 is floatably arranged below the base body 10, and the compressing structure 40 is in abutting fit with the patch 4 on the battery cell 1.

By applying the technical solution of the first embodiment, the compressing structure 40 is floatably disposed below the substrate 10, and the compressing structure 40 is located between the first detecting member 20 and the second detecting member 30 and is in abutting fit with the patch 4 on the battery cell 1. Like this, first detection piece 20 is measured with voltage and the internal resistance from positive terminal 2 to electric core 1 with the 2 butt of positive terminal of electric core 1, second detection piece 30 is measured with voltage and the internal resistance from negative terminal 3 to electric core 1 with the 3 butts of negative pole end from electric core 1, the cooperation is supported in paster 4 on compact structure 40 and the electric core 1 to the top simultaneously, compact structure 40 can be to the 4 application of force of paster, compact structure 40 compresses tightly the paster, so that the paster glues on electric core, prevent the paster perk, and then can reduce fraction defective and the risk that the paster perk caused. Therefore, the technical scheme of the first embodiment can solve the problem that the patch on the battery cell in the related art is tilted, and further effectively reduces the manufacturing cost. The substrate 10 of the first embodiment may be a robot.

As shown in fig. 2, in the first embodiment, the pressing structure 40 includes an elastic member 41 connected to the base 10. The elastic member 41 has good elasticity so that the pressing structure 40 can be floatingly located under the base body 10. The elastic member 41 is preferably a spring.

In this application, the central position of the upper surface of the battery cell 1 is an explosion-proof valve area, where the patch 4 is easily tilted to cause poor air tightness test, so that the defective rate of the battery cell is high, as shown in fig. 1 and fig. 2, in the first embodiment, the compressing structure 40 further includes a pressing block 42 disposed at one end of the elastic member 41 away from the substrate 10. In this way, the pressing block 42 can press the patch 4 in the explosion-proof valve area specifically to stick the patch 4 on the battery cell while the detection member measures the voltage and the internal resistance of the battery cell.

As shown in fig. 2, in the first embodiment, the pressing piece 42 is riveted to the free end of the elastic member 41 for easy connection and assembly. Of course, in an embodiment not shown in the figures, the pressure piece and the free end of the spring element can be welded or screwed or adhesively connected.

As shown in fig. 2, in order to provide the insulating effect to the compact 42, the compact 42 is made of a first insulating material. The first insulating material is preferably an acrylic material.

As shown in fig. 2, in the first embodiment, the pressing tool further includes a protecting sleeve 50 which is sleeved outside the pressing structure 40 and connected to the base 10, and the protecting sleeve 50 can protect the pressing structure 40 to prevent the pressing structure 40 from being damaged. To avoid interference of the compression structure 40 with the shield 50 during compression of the patch 4 by the compression structure 40, the length L1 of the shield 50 is less than the length L2 of the first sensing element 20.

Of course, in embodiments not shown in the figures, the length L1 of the shield can be less than the length L2 of the second test element. The length L1 of the shield is equal to the length L2 of one of the first and second sensing members.

As shown in fig. 2, in the process of abutting and matching the pressing structure 40 with the patch 4 on the battery cell 1, in order to avoid interference between the pressing block 42 and the positive terminal 2 and the negative terminal 3, the positive terminal 2 and the negative terminal 3 are both located on the same side of the battery cell 1, the length L3 of the pressing block 42 is the distance between the positive terminal 2 of the battery cell 1 and the negative terminal 3 of the battery cell 1, and the length L3 of the pressing block 42 refers to the dimension of the pressing block 42 in the direction from the positive terminal 2 of the battery cell 1 to the negative terminal 3 of the battery cell 1.

As shown in fig. 2, in order for the first detection member to accurately measure the voltage and the internal resistance of the battery cell 1 from the positive terminal 2, the first detection member 20 includes a first screw 21 disposed below the base 10 and a first metal member 22 disposed on the first screw 21. In order to facilitate the second detection member 30 to accurately measure the voltage and the internal resistance of the battery cell 1 from the negative terminal 3, the second detection member 30 includes a second screw 31 disposed below the base body 10 and a second metal member 32 disposed on the second screw 31.

In the second embodiment of the pressing tool for the battery cell, the difference from the first embodiment of the pressing tool for the battery cell lies in the structure of the pressing structure. As shown in fig. 1, 3 and 4, in the second embodiment, the pressing structure 40 further includes a pressing plate 43 disposed at an end of the elastic member 41 away from the substrate 10, and the pressing plate 43 is provided with a first avoidance hole 431 avoiding the positive terminal 2 and a second avoidance hole 432 avoiding the negative terminal 3. Like this, when being used for compressing tightly the frock test of electric core, dodge hole 431 so that clamp plate 43 can dodge positive terminal 2 through the first, dodge hole 432 through the second and can make clamp plate 43 dodge negative pole end 3, clamp plate 43 not only can compress tightly the paster 4 in explosion-proof valve region, can also compress tightly paster 4 around positive terminal 2 and around negative pole end 3, realize all compressing tightly paster 4 on the upper surface of electric core 1 to make paster 4 wholly glue on paster 4. The paster 4 on the battery cell 1 is compressed by 100%, so that the quality risk caused by the upwarping of the paster can be effectively reduced, the production efficiency is greatly improved, and the production cost is saved.

As shown in fig. 1, 3 and 4, the length of the pressing plate 43 is greater than the length of the patch 4, the width of the pressing plate 43 is greater than the width of the patch 4, and the projection of the pressing plate 43 on the end face of the battery cell 1 is located in the end face. Thus, the pressing plate 43 can be ensured to compress the patch 4 on the battery cell 1 by 100%.

As shown in fig. 3, in the second embodiment, the pressing plate 43 is made of the second insulating material in order to provide the insulating effect to the pressing plate 43. The second insulating material is preferably an acrylic material.

As shown in fig. 3, in the second embodiment, the pressing plate 43 is riveted to the free end of the elastic member 41 for easy connection and assembly. Of course, in embodiments not shown in the figures, the pressure plate and the free end of the spring element can be welded or screwed or adhesively connected.

The utility model provides a structure light alright cyclic utilization, dismantlement convenience, with low costs for embodiment two of the frock that compresses tightly of electric core to can be used to the module of isostructure, the biggest advantage is under the prerequisite that will shift to module process beat time after not increasing electric core and roll off the line, carries out 100% to the paster on the electric core and compresses tightly, can effectively reduce the quality risk that the paster perk of top leads to, improves production efficiency by a wide margin, practices thrift manufacturing cost.

It should be noted that the material, shape, and area of the pressing block 42 in the first embodiment and the pressing plate 43 in the second embodiment can be adjusted according to the actual cell size.

The application also provides a cell subassembly, and the cell subassembly of this embodiment includes electric core 1 and compresses tightly the frock. Be provided with paster 4 on electric core 1, compress tightly the frock and be the aforesaid a frock that compresses tightly for electric core. Because the aforesaid is used for compressing tightly frock of electric core can solve the problem that the paster on the electric core among the correlation technique has the perk for it can solve same technical problem to have this frock of compressing tightly. The first detection piece 20 of the pressing tool is in butt fit with the positive end 2 of the battery cell 1, the second detection piece 30 of the pressing tool is in butt fit with the negative end 3 of the battery cell 1, and the pressing structure 40 of the pressing tool is in butt fit with the patch 4 on the battery cell 1.

In the description of the present invention, it should be understood that the orientation or positional relationship indicated by the orientation words such as "front, back, up, down, left, right", "horizontal, vertical, horizontal" and "top, bottom" etc. are usually based on the orientation or positional relationship shown in the drawings, and are only for convenience of description and simplification of description, and in the case of not making a contrary explanation, these orientation words do not indicate and imply that the device or element referred to must have a specific orientation or be constructed and operated in a specific orientation, and therefore, should not be interpreted as limiting the scope of the present invention; the terms "inner and outer" refer to the inner and outer relative to the profile of the respective component itself.

Spatially relative terms, such as "above … …," "above … …," "above … …," "above," and the like, may be used herein for ease of description to describe one device or feature's spatial relationship to another device or feature as illustrated in the figures. It will be understood that the spatially relative terms are intended to encompass different orientations of the device in use or operation in addition to the orientation depicted in the figures. For example, if a device in the figures is turned over, devices described as "above" or "on" other devices or configurations would then be oriented "below" or "under" the other devices or configurations. Thus, the exemplary term "above … …" can include both an orientation of "above … …" and "below … …". The device may be otherwise variously oriented (rotated 90 degrees or at other orientations) and the spatially relative descriptors used herein interpreted accordingly.

It should be noted that the terms "first", "second", and the like are used to define the components, and are only used for convenience of distinguishing the corresponding components, and if not stated otherwise, the terms have no special meaning, and therefore, the scope of the present invention should not be construed as being limited.

The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. The utility model provides a compress tightly frock for electric core which characterized in that includes:

a base (10);

the detection piece comprises a first detection piece (20) in butt fit with a positive electrode end (2) of the battery cell (1) and a second detection piece (30) in butt fit with a negative electrode end (3) of the battery cell (1), and the first detection piece (20) and the second detection piece (30) are arranged below the base body (10) at intervals;

the pressing structure (40) is arranged below the base body (10) in a floating mode, and the pressing structure (40) is matched with the patch (4) on the battery cell (1) in an abutting mode.

2. The pressing tool according to claim 1, characterized in that the pressing structure (40) comprises an elastic member (41) connected to the base body (10) and a pressing block (42) arranged at one end of the elastic member (41) far away from the base body (10).

3. Pressing tool according to claim 2, characterized in that the pressing piece (42) is welded or riveted or screwed or adhesively connected to the free end of the elastic element (41).

4. The compaction tool according to claim 2, wherein the compaction block (42) is a first insulating material.

5. The pressing tool according to claim 2, wherein the pressing structure (40) further comprises a pressing plate (43) arranged at one end, away from the base body (10), of the elastic part (41), and a first avoidance hole (431) for avoiding the positive end (2) and a second avoidance hole (432) for avoiding the negative end (3) are arranged on the pressing plate (43).

6. The compaction tool according to claim 5, wherein the pressure plate (43) is made of a second insulating material.

7. Pressing tool according to claim 5, characterized in that the pressure plate (43) is welded or riveted or screwed or adhesively connected to the free end of the elastic element (41).

8. Pressing tool according to any one of claims 1 to 7, characterized in that it further comprises a protective sleeve (50) fitted over said pressing structure (40) and connected to said base body (10), said protective sleeve (50) having a length L1 less than or equal to the length L2 of one of said first detecting element (20) and said second detecting element (30).

9. The pressing tool according to any one of claims 1 to 7, wherein the first detection member (20) comprises a first screw (21) disposed below the base body (10) and a first metal member (22) disposed on the first screw (21), and the second detection member (30) comprises a second screw (31) disposed below the base body (10) and a second metal member (32) disposed on the second screw (31).

10. The utility model provides an electricity core subassembly, includes electric core (1) and compresses tightly the frock, its characterized in that, be provided with paster (4) on electric core (1), it is any one of claims 1 to 9 to compress tightly the frock that compresses tightly for electric core, compress tightly first detection piece (20) of frock with positive terminal (2) butt cooperation of electric core (1), compress tightly the frock second detection piece (30) with negative pole end (3) butt cooperation of electric core (1), compress tightly compact structure (40) of frock with paster (4) on electric core (1) support the top cooperation.