CN110600644A

CN110600644A - Anti-falling battery

Info

Publication number: CN110600644A
Application number: CN201910792514.8A
Authority: CN
Inventors: 徐建国; 江宜建
Original assignee: ICON ENERGY SYSTEM CO Ltd
Current assignee: ICON ENERGY SYSTEM CO Ltd
Priority date: 2019-08-26
Filing date: 2019-08-26
Publication date: 2019-12-20

Abstract

The invention provides a drop-proof battery, which comprises a battery cell, a lower shell, an upper shell and a bracket, wherein the upper shell is used for covering the lower shell, and the bracket is used for fixing the battery cell and is positioned in the lower shell; the bracket is provided with a first clamping protrusion, and the protruding height of the first clamping protrusion is gradually reduced from top to bottom; the lower shell is provided with a second clamping protrusion, and the protruding height of the second clamping protrusion gradually increases from top to bottom; the upper end face of the first clamping protrusion can be attached to the lower end face of the second clamping protrusion so as to clamp the support and the lower shell. The anti-falling battery provided by the invention has the advantages that the structure is simple, the assembly is convenient and fast, the battery core can be directly pressed into the lower shell, the assembly time is saved, the production efficiency of the battery is improved, and the damage of the battery core and the cracking of the covering position of the upper shell and the lower shell caused by the collision of the battery core with the shell when the battery falls can be avoided.

Description

Anti-falling battery

Technical Field

The invention belongs to the technical field of batteries, and particularly relates to a drop-proof battery.

Background

The lithium ion battery is a secondary battery (namely a rechargeable battery) which mainly depends on lithium ions to move between a positive electrode and a negative electrode, has the advantages of high working voltage, high energy density, long cycle life, small self-discharge, high environmental protection and the like, and is widely applied to industries such as mobile phones, notebook computers, miniature cameras, aerospace and the like.

Lithium ion battery leads to it to fall on the cement floor very easily because carelessness is careless in the use, and many lithium ion batteries adopt the technical scheme of screw fixation when the design, pass through the screw fixation with inside electric core on the shell to reach and satisfy the drop test requirement, damage when avoiding lithium ion battery to fall. However, in order to be applied conveniently, the volume of the lithium ion battery is small, the internal space is limited, especially for the cylindrical lithium ion battery, a plurality of electric cores are often combined together to form a battery pack, the space in the battery pack is narrow, and the lithium ion battery is very inconvenient to fix by using screws, so that the production efficiency of the lithium ion battery is low.

Disclosure of Invention

The invention aims to provide a drop-proof battery to solve the technical problem that the production efficiency of a lithium ion battery is low in the prior art.

In order to achieve the purpose, the invention adopts the technical scheme that: the anti-drop battery comprises an electric core, a lower shell, an upper shell and a bracket, wherein the upper shell is used for covering the lower shell, the bracket is used for fixing the electric core, and the bracket is positioned in the lower shell;

the bracket is provided with a first clamping protrusion, and the protruding height of the first clamping protrusion is gradually reduced from top to bottom; the lower shell is provided with a second clamping protrusion, and the protruding height of the second clamping protrusion gradually increases from top to bottom;

the convex up end of first card can with the protruding lower terminal surface laminating of second card is in order with the support with casing joint down.

Furthermore, the upper end face of the first clamping protrusion and the lower end face of the second clamping protrusion are flat planes and are parallel to each other.

Further, the perpendicular line of the upper end surface of the first clamping protrusion and the perpendicular line of the lower end surface of the second clamping protrusion extend along the vertical direction.

Further, the inclined plane of the first blocking projection from top to bottom is parallel to the inclined plane of the second blocking projection from top to bottom.

Furthermore, the first clamping bulges and the second clamping bulges are arranged in a plurality of one-to-one correspondence.

Furthermore, a positioning column is arranged on the support, a positioning hole is formed in the upper shell, and the positioning column can extend into the positioning hole.

Furthermore, the battery cell is located in a cavity formed by the support and the protection plate, and the positioning column can support the bottom wall inside the upper shell away from the protection plate.

Further, still including being located the elastic insulation piece at support both ends, the elastic insulation piece is used for separating the electrode end of electric core with lower casing.

Furthermore, an annular groove is formed in the side wall of the upper shell, an annular protrusion is formed in the side wall of the lower shell, and the annular protrusion can extend into the annular groove;

the outer side wall of the upper shell is flush with the outer side wall of the lower shell.

Further, the upper shell and the lower shell are clamped and/or bonded.

The anti-falling battery provided by the invention has the beneficial effects that: compared with the prior art, the support of the anti-falling battery can fix the battery cell, avoid the phenomenon that the battery cell is directly contacted with the lower shell or the upper shell to increase the damage probability of the battery cell, fix a plurality of battery cells together by the support, and form a battery pack after being arranged in the upper shell and the lower shell which are covered together; the first clamping protrusion arranged on the bracket is clamped with the second clamping protrusion arranged on the lower shell, so that the battery cell can be limited in the lower shell, and the damage of the battery cell and the cracking of the cover joint of the upper shell and the lower shell caused by the collision of the battery cell with the upper shell when the battery falls off are avoided; the protruding height of the first clamping protrusion is gradually reduced from top to bottom, and the protruding height of the second clamping protrusion is gradually increased from top to bottom, so that when the assembled battery presses the support down in the lower shell, the inclined surface of the first clamping protrusion can slide down along the inclined surface of the second clamping protrusion, the support can be smoothly pushed into the lower shell, the support is prevented from being easily pushed into the lower shell due to the fact that the upper end of the first clamping protrusion is abutted to the lower end of the second clamping protrusion, and meanwhile when the first clamping protrusion is clamped with the second clamping protrusion, an operator can feel obvious clamping pause, and the operator can conveniently judge whether the support is clamped with the lower shell; simple structure, it is convenient to assemble, can directly impress electric core in the inferior valve body, has saved the equipment time, has improved the production efficiency of battery.

Drawings

In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings needed to be used in the embodiments or the prior art descriptions will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without inventive exercise.

Fig. 1 is a schematic view of an explosion structure of a drop-proof battery provided in an embodiment of the present invention;

fig. 2 is a cross-sectional view of a drop-resistant battery provided in an embodiment of the present invention.

Wherein, in the figures, the respective reference numerals:

1. an electric core; 2. an upper housing; 21. an annular groove; 3. a lower housing; 31. a second snap projection; 32. an annular projection; 4. a support; 41. a first snap projection; 42. a positioning column; 5. an elastic insulating sheet; 6. and (5) protecting the board.

Detailed Description

In order to make the technical problems, technical solutions and advantageous effects to be solved by the present invention more clearly apparent, the present invention 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 merely illustrative of the invention and are not intended to limit the invention.

It will be understood that when an element is referred to as being "secured to" or "disposed on" another element, it can be directly on the other element or be indirectly on the other element. When an element is referred to as being "connected to" another element, it can be directly connected to the other element or be indirectly connected to the other element.

It will be understood that the terms "length," "width," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," and the like, as used herein, refer to an orientation or positional relationship indicated in the drawings that is solely for the purpose of facilitating the description and simplifying the description, and do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and is therefore not to be construed as limiting the invention.

Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present invention, "a plurality" means two or more unless specifically defined otherwise.

Referring to fig. 1 and 2, a drop-resistant battery according to the present invention will now be described. The anti-falling battery comprises a battery cell 1, a lower shell 3, an upper shell 2 used for covering the lower shell 3 and a bracket 4 used for fixing the battery cell 1, wherein the bracket 4 is positioned in the lower shell 3;

the bracket 4 is provided with a first clamping protrusion 41, and the protruding height of the first clamping protrusion 41 is gradually reduced from top to bottom; the lower shell 3 is provided with a second clamping protrusion 31, and the protruding height of the second clamping protrusion 31 is gradually increased from top to bottom;

the upper end surface of the first clamping protrusion 41 can be attached to the lower end surface of the second clamping protrusion 31 to clamp the bracket 4 with the lower shell 3.

Compared with the prior art, the anti-drop battery provided by the invention has the advantages that the bracket 4 can fix the battery cell 1, the phenomenon that the battery cell 1 is directly contacted with the lower shell 3 or the upper shell 2 to increase the damage probability of the battery cell 1 is avoided, meanwhile, the bracket 4 can fix a plurality of battery cells 1 together, and the battery cells are arranged in the upper shell 2 and the lower shell 3 which are covered together to form a battery pack; the first clamping protrusion 41 arranged on the bracket 4 is clamped with the second clamping protrusion 31 arranged on the lower shell 3, so that the electric core 1 can be limited in the lower shell 3, and the damage of the electric core 1 and the cracking of the cover joint of the upper shell 2 and the lower shell 3 caused by the impact of the electric core 1 on the upper shell when the battery falls off are avoided; the protruding height of the first clamping protrusion 41 is gradually reduced from top to bottom, and the protruding height of the second clamping protrusion 31 is gradually increased from top to bottom, so that when the assembled battery presses the support 4 into the lower shell 3, the inclined surface of the first clamping protrusion 41 can slide downwards along the inclined surface of the second clamping protrusion 31, so that the support 4 can be smoothly pushed into the lower shell 3, the situation that the upper end of the first clamping protrusion 41 is abutted to the lower end of the second clamping protrusion 31 to prevent the support 4 from being easily pushed into the lower shell 3 is avoided, and when the first clamping protrusion 41 is clamped with the second clamping protrusion 31, an operator can feel obvious blockage can be realized, so that the operator can conveniently judge whether the support 4 is clamped with the lower shell 3; simple structure, it is convenient to assemble, can directly impress in the lower casing 3 with electric core 1, has saved the equipment time, has improved the production efficiency of battery.

When the first clamping protrusion 41 and the second clamping protrusion 31 are manufactured, the manufacturing difficulty is reduced, the first clamping protrusion 41 can be directly formed on the bracket 4, and the second clamping protrusion 31 is formed on the lower shell 3, so that the situation that the slotting position of the side wall of the lower shell 3 is too thin and is easy to damage due to the fact that the slotting position on the lower shell 3 is clamped with the first clamping protrusion 41 is avoided; the bracket 4 can be abutted with the lower shell 3 through the first clamping protrusion 41, or abutted with the bracket 4 through the second clamping protrusion 31, or abutted with the lower shell 3 through the first clamping protrusion 41 and abutted with the bracket 4 through the second clamping protrusion 31, so that the bracket 4 is limited in the lower shell 3, and the bracket 4 is prevented from shaking front and back and left and right; compare in using the screw fixation, use the block of first protruding 41 of card and the protruding 31 of second card to be connected, practiced thrift the space of lock screw, reduced the volume of battery, can not produce iron fillings and lead to electric core 1 short circuit, improved the security performance of battery, still reduced the manufacturing cost of battery.

Further, referring to fig. 2, as a specific embodiment of the anti-drop battery provided by the present invention, the upper end surface of the first snap projection 41 and the lower end surface of the second snap projection 31 are flat and parallel to each other, so as to increase the contact area between the first snap projection 41 and the second snap projection 31, reduce the wear of the first snap projection 41 and the second snap projection 31, prolong the service life of the battery, and prevent the first snap projection 41 or the second snap projection 31 from shaking in the lower case 3 after being worn.

Further, referring to fig. 2, as a specific embodiment of the anti-drop battery provided by the present invention, a perpendicular line of the upper end surface of the first snap projection 41 and a perpendicular line of the lower end surface of the second snap projection 31 both extend along the vertical direction, so that a force direction between the first snap projection 41 and the second snap projection 31 is along the vertical direction, and a component force generated between the first snap projection 41 and the second snap projection 31 is prevented from being inclined, so that the upper end surface of the first snap projection 41 slides out of the lower end surface of the second snap projection 31.

Further, referring to fig. 2, as a specific embodiment of the anti-drop battery provided by the present invention, the inclined surface of the first protrusion 41 from top to bottom is parallel to the inclined surface of the second protrusion 31 from top to bottom, so that when the bracket 4 is pressed down into the lower housing 3, the first protrusion 41 can slide down from the second protrusion 31 more smoothly, so that the first protrusion 41 is engaged with the second protrusion 31, and the degree of engagement of the first protrusion 41 sliding down from the second protrusion 31 is improved.

Further, referring to fig. 1 and 2, as an embodiment of the anti-drop battery provided by the present invention, the first locking protrusion 41 and the second locking protrusion 31 are provided in a plurality of and correspond to each other one by one, so as to reduce the manufacturing difficulty of the first locking protrusion 41 and the second locking protrusion 31, improve the efficiency of producing the upper case 2 and the lower case 3, and increase the air circulation efficiency in the upper case 2 and the lower case 3.

Specifically, the first click projection 41 may be one click projection that surrounds the circumferential side of the stent 4; the second catching protrusion 31 may be one that surrounds the inner circumferential side of the lower case 3.

Further, referring to fig. 1 and 2, as a specific embodiment of the anti-falling battery provided by the present invention, the support 4 is provided with a positioning column 42, the upper housing 2 is provided with a positioning hole, and the positioning column 42 can extend into the positioning hole to conveniently and rapidly position the upper housing 2, so as to cover the upper housing 2 on the lower housing 3, thereby improving the production efficiency of the battery, and meanwhile, when the positioning column 42 extends into the positioning hole, the support 4 can be restrained from swaying in the lower housing 3 along the front-back and left-right directions.

Further, referring to fig. 2, as a specific embodiment of the anti-falling battery provided by the present invention, the battery further includes a protection plate 6 fixedly disposed on the support 4, the electric core 1 is located in a cavity formed by the support 4 and the protection plate 6, and the positioning column 42 can support the bottom wall inside the upper casing 2 away from the protection plate 6, so that there is a sufficient safety distance between the upper casing 2 and the protection plate 6, and the upper casing 2 is prevented from damaging elements on the protection plate 6 after being deformed by external force.

Further, referring to fig. 1, as a specific embodiment of the drop-proof battery provided by the present invention, the drop-proof battery further includes elastic insulating sheets 5 located at two ends of the support 4, the elastic insulating sheets 5 can separate the electrode end of the battery core 1 from the lower housing 3, the elastic insulating sheets 5 can prevent electrode plates of the battery core 1 from contacting other electric conductors to cause short circuit of the battery, and can also improve the safety performance of the battery; when the battery falls, the elastic insulation sheet 5 can also play a role in buffering so as to avoid knocking the battery core 1 into damage.

Further, referring to fig. 1 and fig. 2, as a specific embodiment of the anti-drop battery provided by the present invention, an annular groove 21 is provided on the sidewall of the upper casing 2, an annular protrusion 32 is provided on the sidewall of the lower casing 3, and the annular protrusion 32 can extend into the annular groove 21, so as to reduce the relative movement between the upper casing 2 and the bracket 4 of the lower casing 3, and prevent water vapor from entering from the covered position between the upper casing 2 and the lower casing 3;

go up the lateral wall of casing 2 and the lateral wall parallel and level of casing 3 down for the battery after the equipment is a whole, avoids the bulge position of battery to bring inconvenience for using the battery.

Further, as a specific embodiment of the anti-drop battery provided by the invention, the upper casing 2 is clamped with the lower casing 3, or the upper casing 2 is bonded with the lower casing 3, or the upper casing 2 is clamped with the lower casing 3 and bonded, so as to cover the upper casing 2 and the lower casing 3 conveniently, and increase the firmness of the cover of the upper casing 2 and the lower casing 3.

The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents and improvements made within the spirit and principle of the present invention are intended to be included within the scope of the present invention.

Claims

1. Anti-falling battery, including electric core, lower casing and be used for with the last casing that lower casing lid closed, its characterized in that: the battery shell further comprises a bracket for fixing the battery cell, and the bracket is positioned in the lower shell;

2. The drop-resistant battery according to claim 1, characterized in that: the upper end face of the first clamping protrusion and the lower end face of the second clamping protrusion are flat planes and are parallel to each other.

3. The drop-resistant battery according to claim 2, characterized in that: the perpendicular line of the upper end surface of the first clamping protrusion and the perpendicular line of the lower end surface of the second clamping protrusion extend along the vertical direction.

4. The drop-resistant battery according to claim 1, characterized in that: the inclined plane of the first clamping protrusion from top to bottom is parallel to the inclined plane of the second clamping protrusion from top to bottom.

5. The drop-resistant battery according to claim 1, characterized in that: the first clamping bulges and the second clamping bulges are arranged in a plurality of one-to-one correspondence.

6. The drop-resistant battery according to claim 1, characterized in that: the support is provided with a positioning column, the upper shell is provided with a positioning hole, and the positioning column can extend into the positioning hole.

7. The drop-resistant battery according to claim 6, characterized in that: the battery cell is positioned in a cavity formed by the support and the protection plate, and the positioning column can support the bottom wall inside the upper shell away from the protection plate.

8. The drop-resistant battery according to claim 1, characterized in that: still including being located the elastic insulation piece at support both ends, elastic insulation piece is used for separating the electrode tip of electric core with casing down.

9. The drop-resistant battery according to claim 1, characterized in that: an annular groove is formed in the side wall of the upper shell, an annular bulge is formed in the side wall of the lower shell, and the annular bulge can extend into the annular groove;

10. The drop-resistant battery according to claim 1, characterized in that: the upper shell and the lower shell are clamped and/or bonded.