CN220856742U

CN220856742U - Shell structure, battery unit and interphone

Info

Publication number: CN220856742U
Application number: CN202322540250.1U
Authority: CN
Inventors: 雷鑫; 严威; 舒方武; 刘飞飞; 李润朝; 廖兴群
Original assignee: Guangdong Highpower New Energy Technology Co Ltd
Current assignee: Guangdong Highpower New Energy Technology Co Ltd
Priority date: 2023-09-18
Filing date: 2023-09-18
Publication date: 2024-04-26
Anticipated expiration: 2033-09-18

Abstract

The utility model belongs to the technical field of batteries, and particularly relates to a shell structure, a battery unit and an interphone, wherein the shell structure comprises a terminal assembly, an injection molding sealing layer, a panel and a bottom shell; the bottom shell is provided with an inner cavity with a one-way opening, and the panel seals the opening of the inner cavity; the panel is provided with a window communicated with the outside; the terminal assembly comprises a contact and a connecting plate, the connecting plate is arranged on the inner wall of the panel, the opposite surfaces of the connecting plate and the panel are tightly attached, the contact is arranged on the connecting plate and protrudes out of the surface, close to the panel, of the connecting plate, and the contact is inserted into the window; the injection molding sealing layer is arranged on one side, far away from the panel, of the connecting plate, the outer edge of the injection molding sealing layer protrudes out of the outer edge of the connecting plate, and the injection molding sealing layer is adhered to the terminal assembly and the panel. According to the shell structure, the battery unit and the interphone, the gap between the connecting plate and the bottom shell is sealed and bonded by the injection molding sealing layer, and the injection molding sealing layer is more stable than the double faced adhesive tape in fixing effect and sealing effect.

Description

Shell structure, battery unit and interphone

Technical Field

The utility model belongs to the technical field of batteries, and particularly relates to a shell structure, a battery unit and an interphone.

Background

The shell of part of the battery is provided with a window, a terminal is arranged in the window, and the existing window waterproof design method is generally as follows due to the waterproof requirement: the waterproof double-sided adhesive tape is firstly stuck on the terminal to be fixed on the shell, and then glue is injected or filled in a gap possibly existing between the terminal and the shell for sealing.

When the double-sided adhesive tape ages, the adhesive property and the sealing property of the double-sided adhesive tape are reduced, and the sealing effect and the fixation between the terminal and the shell are affected.

Disclosure of utility model

The technical problems to be solved by the utility model are as follows: aiming at the problems that in the prior art, when double faced adhesive tape ages, the adhesive property and the sealing property of the double faced adhesive tape are reduced, and the sealing effect and the fixation between a terminal and a shell are affected, the shell structure, a battery unit and an interphone are provided.

In order to solve the technical problems, in one aspect, an embodiment of the present utility model provides a housing structure, including a terminal assembly, an injection molding sealing layer, a panel, and a bottom shell;

The bottom shell is provided with an inner cavity with a unidirectional opening, the bottom shell is connected with the panel, and the panel seals the opening of the inner cavity to form a closed cavity;

The panel is provided with a window which is communicated with the inner cavity and the outside;

The terminal assembly comprises a contact and a connecting plate, the connecting plate is arranged on the inner wall of the panel, the connecting plate is closely attached to the opposite surface of the panel to close the window, the contact is arranged on the connecting plate, and the contact protrudes out of the surface of the connecting plate, which is close to the panel, and is inserted into the window;

The injection molding sealing layer is arranged on one side, far away from the panel, of the connecting plate, the outer edge of the injection molding sealing layer protrudes out of the outer edge of the connecting plate, and the injection molding sealing layer is adhered between the terminal assembly and the panel.

Optionally, a first groove is formed in the inner wall of the panel, the first groove is communicated with the window, the connecting plate is arranged in the first groove, and the outer edge of the injection molding sealing layer protrudes out of the outer edge of the first groove.

Optionally, a second groove is formed in the inner wall of the panel, the first groove is located in the second groove, the depth of the second groove is smaller than that of the first groove, the injection molding sealing layer is arranged in the second groove, and the outer edge of the injection molding sealing layer is abutted to the inner wall of the second groove.

Optionally, the terminal assembly further comprises a flexible connecting strip, one end of the flexible connecting strip is connected to the connecting plate, and the other end of the flexible connecting strip penetrates out of the injection molding sealing layer.

Optionally, the second groove is provided with an arc-shaped protrusion, the arc-shaped protrusion surrounds the first groove, the arc-shaped protrusion is provided with a first end and a second end which are arranged at intervals, and the flexible connecting strip penetrates out of a gap between the first end and the second end of the arc-shaped protrusion.

Optionally, the terminal assembly further comprises a PCB board, the PCB board is fixed on the bottom case, and one end of the flexible connecting strip, which penetrates out of the injection molding sealing layer, is connected with the PCB board.

Optionally, the panel and the bottom case are welded.

Optionally, a sliding buckle and a plurality of springs are arranged on the bottom shell, a sliding groove is arranged on the panel, the sliding buckle penetrates through the sliding groove, a buckle part is arranged on one side, away from the bottom shell, of the sliding buckle, and the buckle part is used for being connected with an external device in a buckle mode;

the springs are arranged on one side, far away from the panel, of the sliding buckle, the springs can drive the sliding buckle to be far away from the bottom shell to be connected with external equipment through the buckle after being stretched and elongated by external force, and the springs can drive the sliding buckle to be close to the bottom shell to be connected with the buckle of the external equipment after being contracted by self elastic force.

On the other hand, the embodiment of the utility model also provides a battery unit which comprises a battery module, a nickel sheet and any one of the shell structures; an input terminal is arranged on the bottom shell;

The battery module is fixed on the panel, the output end of the battery module is connected with the terminal assembly, and the input end of the battery module is connected with the input terminal.

On the other hand, the embodiment of the utility model also provides an interphone, which comprises the battery unit.

According to the shell structure, the battery unit and the interphone, the contacts on the connecting plate are inserted into the windows of the bottom shell, the connecting plate seals the windows, the gap between the connecting plate and the bottom shell is sealed by using the injection molding sealing layer, and the injection molding sealing layer and the bottom shell are bonded, and the fixing effect and the sealing effect are stable because the injection molding sealing layer is different from double-sided adhesive.

Drawings

FIG. 1 is a schematic view of a housing structure provided in a first embodiment of the present utility model;

FIG. 2 is an exploded view of a housing structure provided by a first embodiment of the present utility model;

FIG. 3 is a schematic view of a panel of a housing structure according to a first embodiment of the present utility model;

Fig. 4 is an overall schematic diagram of a battery unit provided in a second embodiment of the present utility model;

Fig. 5 is an exploded view of a battery cell according to a second embodiment of the present utility model.

Reference numerals in the specification are as follows:

1. A bottom case; 2. a panel; 21. a first groove; 22. a second groove; 23. arc-shaped bulges; 24. a window; 3. injection molding the sealing layer; 41. a contact; 42. a connecting plate; 43. a flexible connecting strip; 44. a PCB board; 5. a battery module; 6. nickel flakes; 7. an insulating plate; 8. a sliding buckle; 9. and (3) a spring.

Detailed Description

In order to make the technical problems, technical schemes and beneficial effects solved by the utility model more clear, the utility model is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the scope of the utility model.

First embodiment

As shown in fig. 1 to 3, a first embodiment of the present utility model provides a housing structure including a terminal assembly, an injection molding seal layer 3, a panel 2, and a bottom chassis 1. Wherein, the bottom shell 1 is provided with an inner cavity with a unidirectional opening, the bottom shell 1 is connected with the panel 2, and the panel 2 seals the opening of the inner cavity to form a closed cavity. The panel 2 is provided with a window 24 communicating the inner cavity with the outside. The terminal assembly comprises a contact 41 and a connecting plate 42, wherein the connecting plate 42 is arranged on the inner wall of the panel 2, the opposite surfaces of the connecting plate 42 and the panel 2 are closely attached to close the window 24, the contact 41 is arranged on the connecting plate 42, and the contact 41 protrudes out of the surface, close to the panel 2, of the connecting plate 42, so that the contact 41 is inserted into the window 24. The injection molding sealing layer 3 is arranged on one side of the connecting plate 42 far away from the panel 2, the outer edge of the injection molding sealing layer 3 protrudes out of the outer edge of the connecting plate 42, and the injection molding sealing layer 3 is adhered to the terminal assembly and the panel 2.

In this embodiment, the connection plate 42 is first placed near the window 24 until the contact 41 is inserted into the window 24, so that the external device can be electrically connected with the terminal assembly through the contact 41. Then, the connecting plate 42 and the panel 2 are clamped by an external clamp, and then the low-pressure injection molding plastic is injected at one side, far away from the panel 2, of the connecting plate 42, so that the low-pressure injection molding plastic covers the connecting plate 42 and overflows towards the panel 2, the molded low-pressure injection molding plastic is the injection molding sealing layer 3 of the embodiment, the gap between the connecting plate 42 and the inner wall of the panel 2 is sealed, and the terminal assembly, the low-pressure injection molding plastic and the panel 2 are bonded into a whole due to the viscosity of the low-pressure injection molding plastic, and the injection molding sealing layer 3 has the fixing and sealing performances.

In this embodiment, the contacts 41 are elongated protrusions, and the windows 24 are waist-shaped grooves extending reversely through the thickness of the panel 2, and in other embodiments, the windows 24 may be square or circular through holes, and the contacts 41 may be square or circular protrusions.

In this embodiment, the inner wall of the panel 2 is provided with a first groove 21, the first groove 21 communicates with the window 24, the connecting plate 42 is disposed in the first groove 21, and the outer edge of the injection molding sealing layer 3 protrudes from the outer edge of the first groove 21. The shape of the first groove 21 may be identical to the shape of the connecting plate 42, and of course, the shape of the first groove 21 may be slightly larger than the shape of the connecting plate 42 in an equal proportion, so that the connecting plate 42 may be placed in the first groove 21, and rapid positioning of the connecting plate 42 is achieved.

Further, a second groove 22 is formed in the inner wall of the panel 2, the second groove 22 is communicated with the first groove 21, the first groove 21 is located in the second groove 22, the depth of the second groove 22 is smaller than that of the first groove 21, the injection molding sealing layer 3 is arranged in the second groove 22, and the outer edge of the injection molding sealing layer 3 is abutted against the inner side of the second groove 22. The first groove 21 is used for guiding the contact 41 on the connecting plate 42 to be placed in the window 24, and the second groove 22 is used for limiting the injection molding range when the low-pressure injection molding is performed, so that the low-pressure injection molding is molded in the second groove 22, and the shape of the injection molding sealant in each shell is unified.

In this embodiment, the terminal assembly further includes a flexible connection bar 43, one end of the flexible connection bar 43 is connected to the connection plate 42, and the other end passes through the injection molding sealing layer 3. The flexible connection strip 43 is generally a flat cable, and will not be described herein.

In this embodiment, an arc-shaped protrusion 23 is disposed in the second groove 22, the arc-shaped protrusion 23 is disposed around the first groove 21, and one end and the other end of the arc-shaped protrusion 23 are disposed at intervals, and the arc-shaped protrusion 23 and the housing are generally integrally formed, so that the flexible connection strip 43 penetrates out from the intervals between the two ends of the arc-shaped protrusion 23. The arrangement of the arc-shaped protrusions 23 further guides the connecting plate 42 to quickly enter the first groove 21, and the interval for the flexible connecting strip 43 to pass through is reserved, so that wiring is facilitated. In addition, the arc-shaped bulge 23 also increases the contact area of the injection molding sealing layer 3 and the shell, and enhances the connection strength of the injection molding sealing layer 3 and the shell.

In this embodiment, the terminal assembly further includes a PCB 44, where the PCB 44 is connected to one end of the flexible connection strip 43 penetrating out of the injection molding sealing layer 3, and the PCB 44 is fixed on the bottom case 1, specifically, in this embodiment, the PCB 44 is fixed on the bottom case 1 by bolts.

In view of improving the sealing strength, the panel 2 and the bottom chassis 1 are ultrasonically welded, and the ultrasonic welding can weld the panel 2 and the bottom chassis 1 as a closed whole as much as possible, thereby reducing the occurrence of a gap between the panel 2 and the bottom chassis 1.

In this embodiment, be provided with slip buckle 8 and a plurality of spring 9 on the drain pan 1, set up the sliding tray on the panel 2, slip buckle 8 passes the sliding tray, is provided with the buckle portion on the side that slip buckle 8 kept away from drain pan 1, and the buckle portion can be connected with external equipment buckle.

The plurality of springs 9 set up in the one side that panel 2 was kept away from to the slip buckle 8, can drive slip buckle 8 and keep away from drain pan 1 in order to buckle and connect external equipment after the spring 9 stretches, perhaps can drive slip buckle 8 and be close to drain pan 1 in order to relieve the buckle connection with external equipment after the spring 9 shrink.

The sliding buckle 8 of this embodiment realizes the detachable connection with external equipment through the buckle portion, needs to connect external equipment, connects the buckle portion buckle with external equipment, does not need to connect external equipment, and the finger presses and drives the sliding buckle 8 and moves towards the drain pan 1 for the sliding buckle 8 breaks away from external equipment.

Second embodiment

Referring to fig. 4 and 5, a second embodiment of the present utility model provides a battery unit including a battery module 5, a nickel plate 6, and any one of a case structure; the bottom case 1 is provided with an input terminal. The battery module 5 is fixed on the panel 2, in this embodiment, one side surface of the battery module 5 is fixed on the panel 2 by double faced adhesive tape or hot melt adhesive, and other surfaces of the battery module 5 can also be fixed on the bottom shell by double faced adhesive tape or hot melt adhesive. One output end of the battery module 5 is connected with the terminal assembly, and the other output end is connected with the input terminal. In this embodiment, the battery monocular further includes a nickel plate 6 and an insulating plate 7, the battery module 5 is connected to the input terminal on the bottom case 1 through the nickel plate 6, and the insulating plate 7 is disposed between the nickel plate 6 and the battery module 5, so as to realize insulation protection, and the insulating plate 7 may be a PC board. One end of the nickel sheet 6 is connected with the PCB 44, and the other end is connected with an input terminal on the bottom shell 1. Moreover, the flexible connector in the present embodiment is connected to the PCB 44, and electrical connection between the contact 41 and the PCB 44 is achieved.

Of course, in other embodiments, it is also possible to realize that one output end of the battery module 5 is connected to the terminal assembly and the other input end is connected to the input terminal in other equivalent manners, which are not described herein, and in this embodiment, the input terminal may be used for inputting energy and may be used for inputting signals.

Third embodiment

The third embodiment of the utility model provides an interphone, which comprises the battery unit.

The foregoing description of the preferred embodiments of the utility model is not intended to be limiting, but rather is intended to cover all modifications, equivalents, and alternatives falling within the spirit and principles of the utility model.

Claims

1. The shell structure is characterized by comprising a terminal assembly, an injection molding sealing layer, a panel and a bottom shell;

2. The housing structure of claim 1, wherein a first groove is formed in an inner wall of the panel, the first groove is communicated with the window, the connecting plate is arranged in the first groove, and an outer edge of the injection molding sealing layer protrudes out of an outer edge of the first groove.

3. The housing structure of claim 2, wherein a second groove is provided on an inner wall of the panel, the first groove is located in the second groove, a depth of the second groove is smaller than a depth of the first groove, the injection molding sealing layer is disposed in the second groove, and an outer edge of the injection molding sealing layer abuts against an inner wall of the second groove.

4. The housing structure of claim 3 wherein said terminal assembly further comprises a flexible connecting strip having one end connected to said connecting plate and the other end passing out of said injection molded sealing layer.

5. The housing structure of claim 4 wherein the second recess is provided with an arcuate projection disposed about the first recess, the arcuate projection having a first end and a second end disposed in spaced relation, the flexible connecting strip extending from a gap between the first and second ends of the arcuate projection.

6. The housing structure of claim 4, wherein the terminal assembly further comprises a PCB board secured to the bottom shell, and wherein an end of the flexible connecting strip that passes out of the injection-molded sealing layer is connected to the PCB board.

7. The housing structure of claim 1 wherein said panel and said bottom shell are welded.

8. The housing structure according to claim 1, wherein a sliding buckle and a plurality of springs are provided on the bottom case, a sliding groove is provided on the panel, the sliding buckle passes through the sliding groove, a buckle portion is provided on a side of the sliding buckle away from the bottom case, and the buckle portion is used for being in buckle connection with an external device;

9. A battery cell comprising a battery module, a nickel plate, and the housing structure of any one of claims 1 to 8; an input terminal is arranged on the bottom shell;

10. An intercom comprising the battery cell of claim 9.