CN212967921U

CN212967921U - Battery with sealing structure

Info

Publication number: CN212967921U
Application number: CN202022230238.7U
Authority: CN
Inventors: 兰天保; 胡传鹏; 李长江
Original assignee: Dongguan Poweramp Technology Ltd
Current assignee: Dongguan Poweramp Technology Ltd
Priority date: 2020-09-30
Filing date: 2020-09-30
Publication date: 2021-04-13
Anticipated expiration: 2030-09-30

Abstract

The application provides a battery with seal structure, including the casing, set up in electric core subassembly, connector and circuit board in the casing. The electric core assembly is electrically connected with the connector, and the circuit board is arranged in the shell and connected with the connector. The first side of the first shell is provided with a first groove, and one end of the connector, which is far away from the circuit board, extends out of the first shell from the first groove. The second shell is provided with a second groove, and the joint of the connector and the circuit board is arranged outside the second shell, and part of the connector is contained in the second groove. And the second groove is filled with sealant, and the sealant covers the joint of the connector and the circuit board. The connector part of the battery is arranged outside the shell, the connecting part of the connector and the circuit board is arranged outside the second shell, part of the connecting part is contained in the second groove, and the second groove is filled with the sealant for packaging, so that the occupied space of the connector in the battery is reduced, and the sealing reliability is high.

Description

Battery with sealing structure

Technical Field

The application relates to the field of batteries, in particular to a battery with a sealing structure.

Background

In the prior art, the connector output of the battery is mainly fixed on the surface of the shell by the socket head, the switching terminal is connected with the socket head through the wiring harness, the adapter and the wiring harness are arranged inside the battery shell, the required space is large, the structure is complex, the connection can not be realized for a small battery, and the problem of poor sealing is also existed between the socket head and the shell.

SUMMERY OF THE UTILITY MODEL

In view of the above situation, the present application provides a battery having a sealing structure, in which a connector is partially disposed outside a housing, a connection portion between the connector and a circuit board is disposed outside a second housing and partially accommodated in a second groove, and the second groove is filled with a sealant for encapsulation, so that the occupied space of the connector inside the battery is reduced, and the sealing reliability is high.

An embodiment of the present application provides a battery with a sealing structure, including a housing, a cell assembly, a connector and a circuit board disposed in the housing. The electric core assembly is electrically connected with the connector, and the circuit board is arranged in the shell and connected with the connector. A first groove is formed in the first side of the first shell, and one end, far away from the circuit board, of the connector extends out of the first shell from the first groove. The second shell is provided with a second groove, and the joint of the connector and the circuit board is arranged outside the second shell, and part of the connector is contained in the second groove. And sealant is filled in the second groove, and covers the joint of the connector and the circuit board.

In some embodiments, the second recess is disposed proximate the first side of the first housing, the first and second recesses communicating.

In some embodiments, the battery further includes a sealing ring, the sealing ring is sleeved outside the connector, the sealing ring is clamped in the first groove, and the sealing ring is bonded with the sealant in the second groove.

In some embodiments, a first protruding rib connected with the sealing ring is arranged in the first groove, a second protruding rib connected with the shell is arranged on the outer side of the sealing ring, and the first protruding rib and the second protruding rib are arranged in a staggered mode.

In some embodiments, the inner side of the sealing ring is provided with a third protruding rib, and the outer surface of the connector is connected with the third protruding rib.

In some embodiments, a positioning column is disposed in the first housing, and a positioning hole is disposed on the circuit board, and the positioning column is matched with the positioning hole.

In some embodiments, the side wall of the second groove presses against a side surface of the circuit board facing the second housing.

In some embodiments, the battery further includes an adapter plate, the adapter plate electrically connects the cell assembly and the circuit board, the first housing includes a first receiving cavity and a second receiving cavity, the cell assembly is disposed in the first receiving cavity, the circuit board is disposed in the second receiving cavity, a first partition plate is disposed between the first receiving cavity and the second receiving cavity, a limiting groove is disposed on the first partition plate, and the limiting groove is used for fixing the adapter plate.

In some embodiments, the first accommodating cavity is filled with a potting adhesive, and the battery further includes a sealing member disposed in the limiting groove.

In some embodiments, the first shell is buckled with the second shell, and the open end of the second shell is accommodated in the open end of the first shell; the inner side of the opening end of the first shell is provided with a connecting groove, the step surface at the bottom of the connecting groove is abutted against the opening end of the second shell, and the sealing glue is filled in the connecting groove.

In some embodiments, the second groove communicates with the connecting groove.

In some embodiments, the inner side wall of the connecting groove is provided with a first buckle, the outer side wall of the second shell is provided with a second buckle, and the first buckle is matched with the second buckle.

In some embodiments, a third groove is formed in the step surface, a fourth protruding rib is arranged at the opening end of the second shell, and the fourth protruding rib is accommodated in the third groove.

In some embodiments, the shell is further provided with a waterproof breathable film, and the waterproof breathable film is used for adjusting the internal pressure of the shell.

In some embodiments, the first housing further has a receiving groove located between the first groove and the second receiving cavity.

The connector part of the battery is arranged outside the shell, the connecting part of the connector and the circuit board is arranged outside the second shell, part of the connecting part is contained in the second groove, and the second groove is filled with the sealant for packaging, so that the occupied space of the connector in the battery is reduced, and the sealing reliability is high.

Drawings

Fig. 1 is a schematic perspective view of a battery in an embodiment.

Fig. 2 is a partial structural schematic view of the battery shown in fig. 1 when no sealant is filled between the first casing and the second casing.

Fig. 3 is an exploded view of the battery shown in fig. 1.

Fig. 4 is a schematic perspective view of a first case of the battery shown in fig. 1.

Fig. 5 is a partial structural schematic view of the first housing shown in fig. 4.

Fig. 6 is a schematic structural view of a sealing ring in the battery shown in fig. 2.

Fig. 7 is a schematic perspective view of a second case of the battery shown in fig. 1.

Fig. 8 is a schematic structural view of a part of components of the battery shown in fig. 1.

Fig. 9 is a schematic structural view of the battery shown in fig. 1 without the second case and the sealant.

Fig. 10 is a schematic cross-sectional view of the structure shown in fig. 9.

Fig. 11 is an enlarged view of a portion of the structure shown in fig. 9.

Fig. 12 is a top view of the structure shown in fig. 8.

Fig. 13 is an enlarged view of a partial structure of the first separator.

Fig. 14 is a schematic structural view of the sealing member.

Fig. 15 is a schematic top view of a battery case.

Fig. 16 is a sectional view of the housing of fig. 15.

Fig. 17 is a partially enlarged view of the structure shown in fig. 16.

Fig. 18 is a schematic perspective view of the battery shown in fig. 1 in another direction.

Fig. 19 is a top view of a battery in one embodiment.

Description of the main element symbols:

battery 100

Housing 10

First housing 11

First groove 111

First protruding rib 112

Positioning post 113

First receiving cavity 114

Second receiving cavity 115

First partition 116

Limiting groove 1161

Seal 117

Receiving groove 1171

Recess 1172

Connecting slot 118

Step surface 1181

Third groove 1182

First buckle 119

Second housing 12

Second groove 121

Second buckle 122

Fourth projecting rib 123

Waterproof breathable film 13

Detection port 131

Accommodation groove 14

Electrical core assembly 20

Connector 30

Sealing glue 40

Sealing ring 50

Second convex rib 51

The third convex rib 52

Circuit board 60

Positioning hole 61

Adapter plate 70

The specific implementation mode is as follows:

the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are only a part of the embodiments of the present application, and not all of the embodiments.

It will be understood that when an element is referred to as being "secured to" another element, it can be directly on the other element or intervening elements may also be present. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present. When an element is referred to as being "disposed on" another element, it can be directly on the other element or intervening elements may also be present. The terms "vertical," "horizontal," "left," "right," and the like as used herein are for illustrative purposes only.

Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs. The terminology used herein in the description of the present application is for the purpose of describing particular embodiments only and is not intended to be limiting of the application. As used herein, the term "or/and" includes any and all combinations of one or more of the associated listed items.

The embodiment of the application provides a battery with a sealing structure, which comprises a shell, an electric core assembly arranged in the shell, a connector and a circuit board. The electric core assembly is electrically connected with the connector, and the circuit board is arranged in the shell and connected with the connector. A first groove is formed in the first side of the first shell, and one end, far away from the circuit board, of the connector extends out of the first shell from the first groove. The second shell is provided with a second groove, and the joint of the connector and the circuit board is arranged outside the second shell, and part of the connector is contained in the second groove. And sealant is filled in the second groove, and covers the joint of the connector and the circuit board.

Some embodiments of the present application are described in detail. In the following embodiments, features of the embodiments may be combined with each other without conflict.

Referring to fig. 1, 2 and 3, a battery 100 having a sealed structure includes a case 10, a cell assembly 20 disposed in the case 10, a connector 30 and a circuit board 60. The connector 30 extends out of the housing 10, and the electric core assembly 20 is electrically connected with the connector 30. The circuit board 60 is disposed in the housing 10 and connected to the connector 30. The housing 10 includes a first housing 11 and a second housing 12, a first groove 111 is formed on a first side of the first housing 11, and an end of the connector 30 away from the circuit board 60 extends out of the first groove 111 of the first housing 11. The second housing 12 is provided with a second groove 121, the second groove 121 is disposed near the first side of the first housing 11, and the first groove 111 is communicated with the second groove 121. The connection position of the connector 30 and the circuit board 60 is disposed outside the second housing 12, and a portion of the connection position is accommodated in the second groove 121. The second groove 121 is filled with a sealant 40, and the sealant 40 covers a connection portion between the connector 30 and the circuit board 60.

The housing 10 further includes a sealing ring 50, and the sealing ring 50 is sleeved outside the connector 30. The sealing ring 50 is clamped in the first groove 111. The inner side surface of the sealing ring 50 is bonded with the sealant 40.

In the embodiment of the present application, the first groove 111 is substantially a notch on a side wall of the first housing 11, and communicates with an inner cavity of the first housing 11. The second groove 121 is formed by inwardly recessing the sidewall of the second housing 12. The outer contour of the sealing ring 50 matches the shape of the first groove 111, and is substantially rectangular, and the inner contour of the sealing ring 50 matches the outer contour of the connector 30, and is substantially trapezoidal. It is understood that the inner and outer contours of the sealing ring 50 may also be circular, polygonal, etc. and match with the first groove 111 and the connector 30, respectively, but the present application is not limited thereto.

With reference to fig. 4, fig. 5 and fig. 6, a first protruding rib 112 connected to the sealing ring 50 is disposed in the first groove 111, a second protruding rib 51 connected to the housing 10 is disposed outside the sealing ring 50, and the first protruding rib 112 and the second protruding rib 51 are staggered. Specifically, the first protruding rib 112 is disposed on the inner peripheral side of the first groove 111, and the first protruding rib 112 and the first housing 11 are an integrally formed structure. The second protruding rib 51 is arranged on the surface of the sealing ring 50 abutted to the first groove 111, and the second protruding rib 51 and the sealing ring 50 are of an integrally formed structure. The sealing ring 50 is made of an elastic material. The thickness of the seal ring 50 is substantially the same as the thickness of the first groove 111 in the axial direction of the connector 30. First protruding muscle 112 with the position of the protruding muscle 51 of second corresponds, works as in sealing washer 50 accepts to first recess 111, the internal week side of first recess 111 with sealing washer 50's lateral surface butt, first protruding muscle 112 is contradicted the protruding muscle 51 of second to promote the sealing performance between sealing washer 50 and the first recess 111. In other embodiments, the thickness of the sealing ring 50 may be different from the thickness of the first groove 111, and the present application is not limited thereto.

Referring to fig. 6 again, the inner side of the sealing ring 50 is provided with a third protruding rib 52, and the outer surface of the connector 30 is connected with the third protruding rib 52, so as to ensure the sealing performance between the connector 30 and the sealing ring 50.

Referring to fig. 7 to 10, a positioning post 113 is disposed in the first housing 11, a positioning hole 61 is disposed on the circuit board 60, and the positioning post 113 is matched with the positioning hole 61. Specifically, the first housing 11 includes a first receiving cavity 114 and a second receiving cavity 115, and a first partition 116 is disposed between the first receiving cavity 114 and the second receiving cavity 115. The electric core assembly 20 is disposed in the first accommodating cavity 114, the circuit board 60 and the positioning column 113 are disposed in the second accommodating cavity 115, and the circuit board 60 is electrically connected to the electric core assembly 20. The positioning pillars 113 are vertically disposed at the bottom of the second receiving cavity 115, and can be integrally formed with the first housing 11. When the positioning posts 113 are matched with the positioning holes 61, the circuit board 60 is supported and fixed by the positioning posts 113. The first groove 111 is disposed on a side of the second receiving cavity 115 opposite to the first partition 116. One end of the connector 30 extending into the first housing 11 is electrically connected to the circuit board 60.

The side wall of the second groove 121 protrudes out of the side wall of the second housing 12. When the second housing 12 is fastened to the first housing 11, the sidewall of the second groove 121 presses against a side surface of the circuit board 60 facing the second housing 12 to further fix the circuit board 60, so as to prevent the circuit board 60 from shaking in the housing 10. Further, referring to fig. 2 again, before the sealant 40 is filled, the connection portion of the circuit board 60 and the connector 30 is located in the second groove 121 and exposed out of the housing 10, and the sealant 40 covers the connection portion of the circuit board 60 and the connector 30 when the second groove 121 is filled with the sealant 40, so as to complete the sealing of the housing 10 and fix the circuit board 60 and the connector 30.

With continued reference to fig. 11, the battery 100 further includes an interposer 70, wherein the interposer 70 electrically connects the electrical core assembly 20 and the circuit board 60. Specifically, a limiting groove 1161 is formed on the first partition 116 and is used for fixing the adapter plate 70. One end of the adapter plate 70 extends into the first receiving cavity 114 to be electrically connected with the electrical core assembly 20, and the other end of the adapter plate 70 extends into the second receiving cavity 115 to be electrically connected with the circuit board 60.

Referring to fig. 12, 13 and 14, the first receiving cavity 114 is filled with a potting adhesive, the first housing 11 further includes a sealing member 117, and the sealing member 117 is disposed in the limiting groove 1161 and is used for filling a gap between the interposer 70 and the limiting groove 1161 to prevent the potting adhesive from flowing into the second receiving cavity 115. The seal 117 is made of an elastic material and is substantially U-shaped. The middle portion of the sealing member 117 is provided with a receiving groove 1171, the adapter plate 70 is disposed in the receiving groove 1171, and the inner side wall of the receiving groove 1171 abuts against the surface of the adapter plate 70. A recessed portion 1172 is provided on the outer peripheral side of the seal 117, and the inner peripheral side of the stopper groove 1161 is engaged with the recessed portion 1172.

Referring to fig. 1, fig. 3 and fig. 4 again, the first housing 11 is fastened to the second housing 12, the open end of the second housing 12 is accommodated in the open end of the first housing 11, the open end of the first housing 11 is provided with a connecting groove 118, a stepped surface 1181 at the bottom of the connecting groove 118 abuts against the open end of the second housing 12, and the connecting groove 118 is filled with the sealant 40, so as to seal the connecting gap between the first housing 11 and the second housing 12. The first housing 11 is further provided with a receiving groove 14, and the receiving groove 14 is located between the first groove 111 and the second receiving cavity 115. When the first housing 11 is buckled with the second housing 12, the second groove 121 communicates the connecting groove 118 and the receiving groove 14, and the molten sealant 40 can be poured from the second groove 121 and then flows into the connecting groove 118 and the receiving groove 14 from the second groove 121 until sealing is completed.

Referring to fig. 15, 16 and 17, a first buckle 119 is disposed on an inner side wall of the connecting groove 118, a second buckle 122 is disposed on an outer side wall of the second housing 12, the first buckle 119 is matched with the second buckle 122, and the sealant 40 is disposed between the first buckle 119 and the second buckle 122, which is beneficial to preventing the first housing 11 from being separated from the second housing 12. The first fasteners 119 are in one-to-one correspondence with the second fasteners 122. In one embodiment of the present application, a third groove 1182 is further disposed on the stepped surface 1181, a fourth protruding rib 123 is disposed at an opening end of the second casing 12, and the fourth protruding rib 123 is accommodated in the third groove 1182. The gap between the third groove 1182 and the fourth protruding rib 123 may also be filled with the sealant 40, so as to further improve the connection firmness and the sealing performance between the first casing 11 and the second casing 12.

Referring to fig. 18, in an embodiment, a waterproof air permeable membrane 13 is further disposed on the housing 10 for adjusting the internal pressure of the housing 10. Gas generated during the charge and discharge of the battery 100 may overflow from the waterproof breathable film 13.

Referring to fig. 19, in an alternative embodiment, the waterproof breathable film 13 is further provided with a detection port 131 for detecting the sealing performance of the battery 100 to ensure the overall reliability.

Although the present application has been described in detail with reference to the preferred embodiments, it will be understood by those skilled in the art that various changes may be made and equivalents may be substituted without departing from the spirit and scope of the present application.

Claims

1. A battery having a sealing structure, comprising:

a housing including a first housing and a second housing;

an electrical core assembly disposed within the housing;

a connector, the electrical core assembly electrically connecting the connector;

wherein the battery further comprises a circuit board disposed within the housing and connected to the connector;

a first groove is formed in the first side of the first shell, and one end, far away from the circuit board, of the connector extends out of the first shell from the first groove;

the second shell is provided with a second groove, the joint of the connector and the circuit board is arranged outside the second shell, part of the connector and the circuit board is contained in the second groove, the second groove is filled with sealant, and the sealant covers the joint of the connector and the circuit board.

2. The battery of claim 1, wherein the second recess is disposed proximate the first side of the first housing, the first recess and the second recess communicating.

3. The battery of claim 1, further comprising a sealing ring, wherein the sealing ring is sleeved outside the connector, the sealing ring is clamped in the first groove, and the sealing ring is adhered to the sealant in the second groove.

4. The battery of claim 3, wherein a first protruding rib connected with the sealing ring is arranged in the first groove, a second protruding rib connected with the shell is arranged outside the sealing ring, and the first protruding rib and the second protruding rib are arranged in a staggered manner.

5. The battery of claim 3, wherein the sealing ring has a third raised rib on an inner side thereof, and the connector has an outer surface connected to the third raised rib.

6. The battery of claim 1, wherein a positioning post is disposed in the first housing, and a positioning hole is disposed on the circuit board, and the positioning post is engaged with the positioning hole.

7. The battery of claim 6, wherein the side wall of the second groove presses against a side surface of the circuit board facing the second housing.

8. The battery of claim 6, further comprising an adapter plate electrically connected to the cell assembly and the circuit board, wherein the first housing comprises a first receiving cavity and a second receiving cavity, the cell assembly is disposed in the first receiving cavity, the circuit board is disposed in the second receiving cavity, a first partition is disposed between the first receiving cavity and the second receiving cavity, and a position-limiting groove is disposed on the first partition and is used for fixing the adapter plate.

9. The battery of claim 8, wherein the first receiving cavity is filled with a potting adhesive, and the battery further comprises a sealing member disposed in the limiting groove.

10. The battery of claim 1, wherein the first housing is snap-fit to the second housing, and the open end of the second housing is received within the open end of the first housing; the inner side of the opening end of the first shell is provided with a connecting groove, the step surface at the bottom of the connecting groove is abutted against the opening end of the second shell, and the sealing glue is filled in the connecting groove.

11. The battery of claim 10, wherein the second groove communicates with the connecting groove.

12. The battery of claim 10, wherein the inner side wall of the connecting groove is provided with a first snap, and the outer side wall of the second case is provided with a second snap, and the first snap is matched with the second snap.

13. The battery of claim 10, wherein the stepped surface has a third recess, and the open end of the second housing has a fourth raised rib received in the third recess.

14. The battery of claim 1, wherein the case is further provided with a waterproof gas permeable membrane for regulating the internal pressure of the case.

15. The battery of claim 1, wherein the first housing further comprises a receiving groove, and the receiving groove is located between the first groove and the second receiving cavity.