CN210379279U

CN210379279U - Press mounting mechanism and assembling device for battery

Info

Publication number: CN210379279U
Application number: CN201921259121.2U
Authority: CN
Inventors: 胡高建
Original assignee: E-Power Tech Co ltd
Current assignee: E-Power Tech Co ltd
Priority date: 2019-08-05
Filing date: 2019-08-05
Publication date: 2020-04-21
Anticipated expiration: 2029-08-05

Abstract

The utility model discloses a press-fitting mechanism and an assembling device of a battery, wherein the press-fitting mechanism comprises a base plate and a pressing piece which are abutted against a top cover of the battery; the pressing piece comprises an elastic piece, a mounting piece and a contact piece abutted with the top cover; the mounting member is mounted on the substrate, the contact member is movably mounted on the mounting member by the elastic member, and the elastic member provides an external force to the contact member against the top cover. The utility model discloses pressure equipment mechanism can avoid the top cap to bounce-back, has reduced the rework rate of battery product, has improved the once excellent rate of product, has improved production efficiency.

Description

Press mounting mechanism and assembling device for battery

Technical Field

The utility model relates to a production facility of battery, in particular to press fitting mechanism and assembly quality of battery.

Background

Generally, a battery includes a casing, a battery core and a top cover, and the battery core needs to be placed in the casing after being connected with the top cover to perform a casing operation in a battery assembling process. For example, after a square lithium ion battery is placed in a shell, a top cover connected with the battery cell and the shell are in an unassembled state, and in order to ensure that the assembly of the top cover and the shell meets the process requirements, and in order to ensure that the welding process between the subsequent top cover and the shell is normally performed, the top cover and the shell need to be installed by means of external force. Currently, press-fitting stations are typically provided prior to welding to address the above-mentioned problems. Specifically, in the assembling device, a pressure plate is placed on a top cover, and then pressure is applied to the pressure plate by using an air cylinder to complete the assembly of the top cover and the shell. However, in the assembling process, the top cover part often rebounds, and as the whole press-fitting plane of the press plate is uniformly stressed, the rebounded part cannot be flattened even if the pressure of the whole plane is increased, and the rebounded position is generally the middle part of the top cover. This situation causes an increase in the rework rate of the battery product, a decrease in the one-time goodness, and an influence on the production efficiency.

SUMMERY OF THE UTILITY MODEL

In order to solve the technical problem, an embodiment of the utility model provides a press-fit mechanism and assembly quality of battery.

In order to achieve the above purpose, the technical scheme of the utility model is realized like this:

the embodiment of the utility model provides a press-fitting mechanism of a battery, which comprises a base plate and a pressing piece, wherein the base plate is abutted against a top cover of the battery; the pressing piece comprises an elastic piece, a mounting piece and a contact piece abutted with the top cover; the mounting member is mounted on the substrate, the contact member is movably mounted on the mounting member by the elastic member, and the elastic member provides an external force to the contact member against the top cover.

In the above solution, the mounting member includes a guide portion and a connecting portion, the connecting portion is mounted on the substrate, and the guide portion is mounted on the connecting portion; the contact is mounted on the guide portion; the elastic piece is sleeved outside the guide part and is connected with the contact piece.

In the above scheme, the substrate includes a first through hole which avoids the pole of the top cover and the explosion-proof valve at the same time, and the pressing member penetrates through the first through hole.

In the above scheme, the connecting part includes a fixing part and a supporting part, and the fixing part is installed on one side of the substrate departing from the top cover; the supporting part is arranged on the fixing part;

the supporting part is far away from one end of the fixing part and the inner wall of the first through hole are arranged at intervals, and the elastic piece is located in the interval between the supporting part and the inner wall of the first through hole.

In the above scheme, the support part is T-shaped.

In the above scheme, two sides of the supporting part are respectively provided with one guide part.

In the above scheme, the contact piece and the guide part are of a split structure, and the contact piece is movable along the axis of the guide part; or

The contact piece and the guide portion are of an integral structure, and the contact piece and the guide portion are movably arranged on the connecting portion.

In the above scheme, the contact member is columnar.

In the above scheme, the base plate includes the third mounting hole and avoids respectively the utmost point post of top cap and two at least second through-holes of explosion-proof valve, at least two the second through-hole interval sets up, the third mounting hole is located adjacent two between the second through-hole, the contact wears to locate the third mounting hole, the installed part is at least partly located the base plate deviates from one side of top cap, the elastic component is located the contact with between the installed part.

The embodiment of the utility model also provides an assembly device, which comprises a base for placing the battery, a fixing mechanism for fixing the battery on the base and any one of the press-fitting mechanisms; the press-fitting mechanism is located on the fixing mechanism and is abutted to the top cover of the battery.

The utility model provides a press-fit mechanism and assembly quality of battery. In the press-fitting mechanism, the base plate and the pressing piece can press-fit the top cover simultaneously, wherein the pressing piece is mainly contacted with a position which is easy to rebound in the top cover. Specifically, in the process that the press-fitting mechanism moves towards the top cover, the contact element is in contact with the top cover before the substrate, the contact element can generate larger pressure on the position, which is easy to rebound, on the top cover, and the rebound of the top cover is avoided. The elastic piece can play the cushioning effect, avoids the contact to weigh the top cap wounded. Therefore, the utility model discloses pressure equipment mechanism can avoid the top cap to bounce-back, has reduced the rework rate of battery product, has improved the once preferred rate of product, has improved production efficiency.

Drawings

Fig. 1 is a schematic structural view of a press-fitting mechanism, a top cover and a battery cell in the press-fitting process of the embodiment of the present invention;

FIG. 2 is a schematic view of an alternative construction of the press-fit mechanism of FIG. 1;

FIG. 3 is a schematic view of an alternative construction of the press of FIG. 2;

FIG. 4 is a schematic view of an alternative construction of the pressing member of FIG. 3 from another perspective, without the securing portion;

fig. 5 is a schematic view of another alternative structure of the press-fitting mechanism in the embodiment of the present invention;

fig. 6 is a schematic top view of the fixing mechanism and the top cover after the assembly of the embodiment of the present invention is completed.

Reference numerals: a press-fitting mechanism 100; a

substrate

110, 170; a first through-hole 111; a second through hole 171; a connecting portion 120; a support portion 121; a fixed portion 122; the first mounting hole 123; a second mounting hole 124; an elastic member 130; a contact member 140; the projection 141; a guide portion 150; a battery 200; a housing 210; a top cover 220; a positive electrode post 221; a negative electrode post 222; an explosion-proof valve 223; a securing mechanism 300.

Detailed Description

In order to make the purpose, technical solution and advantages of the embodiments of the present invention clearer, the drawings of the embodiments of the present invention are combined below to clearly and completely describe the technical solution of the embodiments of the present invention. It is to be understood that the embodiments described are only some of the embodiments of the present invention, and not all of them. All other embodiments, which can be derived by a person skilled in the art from the described embodiments of the invention, belong to the scope of protection of the invention.

In the description of the present invention, it should be understood that the terms "upper", "lower", "top", "bottom", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in fig. 1 and 2.

The embodiment of the utility model provides a press-fitting mechanism of battery, press-fitting mechanism 100 include with the base plate 110 of the top cap 220 butt of

battery

200, 170 and casting die. The pressing member is used to contact the easily resilient portion of the top cover 220, and the side of the substrate 110,170 facing the top cover 220 (also referred to as the bottom side of the substrate 110, 170) can contact other portions of the top cover 220. Fig. 1 shows the top cover 220 with a resilient portion in the middle.

The pressing member includes an elastic member 130, a mounting member, and a contact member 140 abutting against the top cover 220; the mounting member is mounted on the base plate 110,170, the contact 140 is movably mounted on the mounting member by the elastic member 130, and the elastic member 130 provides an external force to the contact 140 abutting the top cover 220.

Without limitation, as shown in fig. 1, the elastic member 130 and the contact member 140 are connected to the substrate 110 by a mounting member. The contact 140 in the follower contacts the top cover 220 in a position that is easily bounced. Specifically, in the process of approaching the top cover 220 of the press-fitting mechanism 100, the contact member 140 first comes into contact with the top cover 220, then the elastic member 130 is gradually compressed, and the contact member 140 moves relative to the mounting member with the compression of the elastic member 130, and at the same time, the substrate 110 gradually approaches the top cover 220 and finally comes into contact with the top cover 220. As the external force increases, the pressure of the elastic member 130 providing the contact 140 with the bounce-prone portion abutting the top cover 220 also gradually increases. In addition, the elastic member 130 can also play a role of buffering, and can protect the top cover 220 from being crushed by the contact member 140. The contact element 140 is arranged to press-fit the position, which is easy to rebound, on the top cover 220 independently, so that the rebound of the top cover 220 is avoided, and the first-time excellent rate and the production efficiency of a product are improved.

Further, the mounting member includes a guide portion 150 and a connection portion 120, the connection portion 120 is mounted on the substrate 110, and the guide portion 150 is mounted on the connection portion 120; the contact 140 is mounted on the guide 150; the elastic member 130 is sleeved outside the guide portion 150, and the elastic member 130 is connected to the contact 140. As shown in fig. 2 to 4, the guide part 150 is indirectly connected to the substrate 110 through the connection part 120. The guide portion 150 supports and guides the elastic member 130.

The elastic member 130 may be a spring, and the number of the springs may be one or more than two, as shown in fig. 2 and 3, the guiding portion 150 is a column shape matched with the spring, and the spring is sleeved outside the column-shaped guiding portion 150. The lower end of the spring is connected to the contact 140. If two or more springs are provided, the two or more springs may be provided around the guide portion 150.

In some embodiments of the present invention, as shown in fig. 2 to 4, the substrate 110 includes a first through hole 111 avoiding both the pole of the top cover 220 and the explosion-proof valve 223, and the pressing member is inserted through the first through hole 111. The top cap 220 is typically provided with a protruding post corresponding to the electrode of the cell, and an explosion-proof valve 223. The first through hole 111 can protect the post and the explosion-proof valve 223 from being damaged during the press-fitting process. Advantageously, when two pressing elements are provided, the distance between the two pressing elements can be adjusted to accommodate press-fitting of the easily rebounding areas of different sizes of areas, as shown in fig. 2.

Further, the connecting portion 120 includes a fixing portion 122 and a supporting portion 121, the fixing portion 122 is mounted on a side of the substrate 110 away from the top cover 220; the support part 121 is mounted on the fixing part 122; one end of the supporting portion 121 far from the fixing portion 122 is spaced apart from the inner wall of the first through hole 111, and the elastic member 130 is located in the space between the supporting portion 121 and the inner wall of the first through hole 111. As shown in fig. 2 to 4, the support portion 121 is T-shaped, and two guide portions 150 are respectively disposed on both sides of the support portion 121. The space between the support portion 121 and the inner wall of the first through hole 111 provides a telescopic space for the contact member 140, and also serves to accommodate the elastic member 130. The fixing portion 122 is mounted on a side of the substrate 110 away from the top cover 220 (also referred to as a top surface of the substrate 110) to facilitate taking and placing of the pressing element, and the supporting portion 121 is beneficial to enhancing the strength of the pressing element.

In some embodiments of the present invention, the contact 140 and the guide 150 are a split structure, and the contact 140 is movable along the axis of the guide 150. At this time, the elastic member 130 and the contact member 140 are fixedly connected. As shown in fig. 2 and 4, the support portion 121 is provided with a first mounting hole 123, and the fixing portion 122 is provided with a second mounting hole 124 corresponding to the first mounting hole 123. Without limitation, the compression element may also include fasteners (not shown) that are disposed through the first mounting hole 123 and the second mounting hole 124. The support portion 121 and the fixing portion 122 are mounted by a fastener. Without limitation, the first and second mounting

holes

121 and 122 may be threaded holes, and the fastener may be a bolt.

Without limitation, as shown in FIG. 2, each follower includes two contacts 140, and two guides 150 are provided on each connecting portion 120. The contact member 140 is preferably cylindrical, and as shown in fig. 2 to 5, the contact member 140 is a pin, and the bottom end of the elastic member 130 abuts against a radially outward protrusion 141 above the pin. Four pins are provided around the rebound prone position, the four pins being located at four points of a generally rectangular shape. Because the area of the position easy to bounce is small, the columnar contact element 140 can be more flexibly adapted to the position easy to bounce, and the contact area of the columnar contact element 140 and the position easy to bounce is small, so that the pressure intensity of the position easy to bounce is increased.

In other embodiments of the present invention, the contact member 140 and the guide portion 150 are a unitary structure, and both the contact member 140 and the guide portion 150 are movably disposed on the connecting portion 120. In this case, the upper end of the elastic member 130 may abut against the connection portion 120, and the lower end of the elastic member 130 may abut against the contact 140. As shown in fig. 2 and 4, the supporting portion 121 is provided with a first mounting hole 123, the fixing portion 122 is provided with a second mounting hole 124 corresponding to the first mounting hole 123, and the columnar guide portion 150 and the contact 140 can be simultaneously inserted into the first mounting hole 123 and the second mounting hole 124. At this time, the first and second mounting

holes

123 and 124 provide a moving space for the guide part 150 with respect to the connection part 120.

As shown in fig. 5, in some other embodiments of the present invention, the base plate 170 includes a third mounting hole (not shown) and at least two second through holes 171 respectively avoiding the pole of the top cover 220 and the explosion-proof valve 223, the at least two second through holes 171 are spaced apart from each other, the third mounting hole is located between two adjacent second through holes 171, the contact element 140 is inserted into the third mounting hole, the mounting element is at least partially located on a side of the base plate 110 facing away from the top cover 220, and the elastic element 130 is located between the contact element 140 and the mounting element. It is understood that, in this embodiment, the mounting member may also include a guiding portion (not shown), the elastic member 130 is sleeved on the guiding portion, and the guiding portion and the contact member 140 may also be a unitary structure or a split structure. The relative relationship between the guide and the contact 140, and the relationship between the guide and the rest of the mount, can be found in the above embodiments and will not be described in detail.

Further, each second through hole 171 avoids one pole or explosion-proof valve 223. Specifically, when one terminal (the positive electrode terminal 221 or the negative electrode terminal 222) and one explosion-proof valve 223 are disposed on one top cover 220, the substrate 170 includes two second through holes 171. As shown in fig. 5, when two poles (the positive pole 221 and the negative pole 222) and an explosion-proof valve 223 are disposed on one top cover 220, the substrate 170 includes three second through holes 171, the third mounting hole is disposed on the substrate 170 and located between two adjacent second through holes 171, the area of the easy-to-rebound position where the contact 140 can be press-fitted is fixed and cannot be adjusted, and the part of the mounting member located on the side of the substrate 110 away from the top cover 220 can facilitate the taking and placing of the pressing member.

The embodiment of the utility model provides an assembly quality is still provided, assembly quality is including the base (not shown) of placing battery 200, fix the fixed establishment 300 and any kind of pressure equipment mechanism 100 of above-mentioned on the base with battery 200, and pressure equipment mechanism 100 is located fixed establishment 300 to with the top cap 220 butt of battery 200.

Further, the assembling device further comprises a power mechanism (not shown) such as a cylinder and a cylinder. The fixing mechanism 300 is used for fixing the battery 200, as shown in fig. 6, before press-fitting, the battery core is placed in the housing 210, at this time, the top cover 220 is located at the opening of the housing 210, the fixing mechanism 300 fixes the long side and the short side of the battery 200 first, so as to ensure the accuracy and stability of the position of the battery 200, then the power mechanism drives the press-fitting mechanism 100 to be close to the top cover 220, and applies pressure to the top cover 220, as shown in fig. 1, until the top cover 220 is press-fitted to be flush with the opening of the housing 210.

Features disclosed in several of the product embodiments provided in the present application may be combined in any combination to yield new product embodiments without conflict. The product comprises a press-fitting mechanism and an assembling device.

Other structures and operations of the press-fitting mechanism and the assembling device according to the embodiments of the present invention are understood and easily implemented by those skilled in the art, and thus will not be described in detail.

The above description is only a preferred embodiment of the present invention, and is not intended to limit the scope of the present invention.

Claims

1. The press-mounting mechanism of the battery is characterized by comprising a base plate and a pressing piece, wherein the base plate is abutted with a top cover of the battery; the pressing piece comprises an elastic piece, a mounting piece and a contact piece abutted with the top cover; the mounting member is mounted on the substrate, the contact member is movably mounted on the mounting member by the elastic member, and the elastic member provides an external force to the contact member against the top cover.

2. The press-fit mechanism according to claim 1, wherein the mounting member includes a guide portion and a connecting portion, the connecting portion being mounted on the base plate, the guide portion being mounted on the connecting portion; the contact is mounted on the guide portion; the elastic piece is sleeved outside the guide part and is connected with the contact piece.

3. The press-fitting mechanism according to claim 2, wherein the base plate includes a first through-hole that avoids both the terminal post of the top cover and the explosion-proof valve, the press member being disposed through the first through-hole.

4. The press-fit mechanism according to claim 3, wherein the connecting portion includes a fixing portion and a supporting portion, the fixing portion being mounted on a side of the base plate facing away from the top cover; the supporting part is arranged on the fixing part;

5. The press-fit mechanism according to claim 4, wherein the support portion is T-shaped.

6. The press-fit mechanism according to claim 5, wherein one of the guide portions is provided on each of both sides of the support portion.

7. The press-fit mechanism according to claim 2, wherein the contact member and the guide portion are of a split structure, the contact member being movable along an axis of the guide portion; or

8. The press-fit mechanism according to claim 1, wherein the contact member is columnar.

9. The press-fitting mechanism according to claim 1, wherein the base plate includes a third mounting hole and at least two second through holes respectively avoiding the pole of the top cover and the explosion-proof valve, at least two of the second through holes are spaced apart from each other, the third mounting hole is located between two adjacent second through holes, the contact member is inserted into the third mounting hole, the mounting member is at least partially located on a side of the base plate facing away from the top cover, and the elastic member is located between the contact member and the mounting member.

10. An assembly device, characterized in that the assembly device comprises a base for placing the battery, a fixing mechanism for fixing the battery on the base, and a press-fitting mechanism according to any one of claims 1 to 9; the press-fitting mechanism is located on the fixing mechanism and is abutted to the top cover of the battery.