CN212392339U - Cooperation structure of battery case and battery cover - Google Patents
Cooperation structure of battery case and battery cover Download PDFInfo
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- CN212392339U CN212392339U CN202021759017.2U CN202021759017U CN212392339U CN 212392339 U CN212392339 U CN 212392339U CN 202021759017 U CN202021759017 U CN 202021759017U CN 212392339 U CN212392339 U CN 212392339U
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02E60/10—Energy storage using batteries
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Abstract
The invention discloses a matching structure of a battery shell and a battery cover, which comprises a bottom shell, a large cover and a small cover, wherein the top end of the bottom shell is open, a plurality of ribs are arranged in the inner cavity of the bottom shell at intervals, and alignment sheets are upwards and convexly arranged at the tops of the ribs and are in an isosceles trapezoid shape; the bottom surface of the large cover is buckled at the top end of the bottom shell, sealing ribs which are in contraposition fit with the ribs are arranged on the bottom surface of the large cover corresponding to the ribs respectively, and the ribs of the bottom shell and the sealing ribs of the large cover adopt a convex and concave isosceles trapezoid fit mode; the isosceles trapezoid structure has the same slope surface in matching, and has the function of automatic alignment and tightening, and the positioning nail of the large cover has an arc surface section and two inclined surface sections, so that the positioning can be more accurate; the heat-seal rib of big lid forms a sealed chamber through heat-seal melting bonding on the little lid, and the trace liquid that the battery exhaust in-process was taken out can the adhesion on sealed intracavity wall, keeps in sealed chamber, avoids leading to battery outward appearance weeping.
Description
Technical Field
The invention relates to the field of batteries, in particular to a matching structure of a battery shell and a battery cover.
Background
At present, in many host factories (motorcycles, automobiles and the like), the requirement on space is higher and higher for improving the performance of the whole automobile, so the requirements on the installation space and the installation mode of auxiliary parts are stricter and stricter; the prior matching structure of the battery shell and the battery cover has the following problems in the using process:
1. the bottom shell and the large cover heat sealing surface ribs adopt a convex and concave semi-circular arc matching mode; the arc structure has high degree of freedom in matching, rotation is carried out in the direction parallel to the axis in the assembling and matching process, the matching has no reference, the product assembling has deflection risk, the center of the product is not aligned when the hot stamping die is adjusted, the product is finally integrally staggered, the inner ribs cannot be completely sealed to generate gaps when being hot stamped and bonded, and the inner oxygen of the single cell is compounded unevenly due to the difference of opening and closing valve pressures of the single cell independent valves in the charging process, so that acid cross and gas cross are caused;
2. the back of the big cover adopts 45-degree positioning ribs, the 45-degree inclined plane has a guiding function, but the heat-sealing ribs of the shell have large shearing force on the inclined plane, when the shell cover is aligned in size deviation, the ribs of the shell can be seriously bent, so that the phenomena of blockage, tangent plane and rebound exist, and the big cover cannot be positioned accurately;
3. the large cover and the small cover adopt a slip type structure, so that integral sealing cannot be realized, and the gas can be discharged by opening when the pressure of the hydrogen and oxygen gas inside reaches the pressure of a valve; the electrolyte (dilute sulfuric acid) in the battery is partially carried out by gas, and the appearance of the battery leaks.
Therefore, how to solve the defects of the prior art is a subject of the present invention.
Disclosure of Invention
In order to solve the problems, the invention discloses a matching structure of a battery shell and a battery cover.
In order to achieve the above purpose, the invention provides the following technical scheme: a matching structure of a battery shell and a battery cover comprises a bottom shell, a large cover and a small cover, wherein the top end of the bottom shell is open, a plurality of ribs are arranged in an inner cavity of the bottom shell at intervals, aligning pieces are arranged at the tops of the ribs in an upward protruding mode and are in an isosceles trapezoid shape;
the bottom surface of the large cover is buckled at the top end of the bottom shell, a sealing rib which is matched with the bottom surface of the large cover in an alignment mode is arranged on the bottom surface of the large cover corresponding to each rib, an isosceles trapezoid groove which is matched with the sealing rib is formed in the sealing rib corresponding to the alignment piece, the alignment piece is clamped in the isosceles trapezoid groove, and the sealing rib of the large cover is connected with the ribs in the bottom shell through heat sealing;
a circle of positioning nails is fixed on the bottom surface of the large cover along the edge of the large cover, the side part of each positioning nail is provided with a positioning surface, a plurality of pairs of positioning nails are arranged on the two sides of the sealing rib along the length direction of the sealing rib, and the positioning surfaces of each pair of positioning nails are arranged oppositely; the positioning surface comprises an arc surface section, a first inclined surface section and a second inclined surface section, the arc surface section is arranged close to the lower end of the positioning nail, the second inclined surface section, the first inclined surface section and the arc surface section are sequentially connected from top to bottom, the inclination of the first inclined surface section relative to a vertical plane is 10-15 degrees, and the inclination of the second inclined surface section relative to the vertical plane is 5-8 degrees;
the second inclined surface section of the positioning nail positioned at the edge of the large cover abuts against the inner wall of the top end of the bottom shell, and the sealing rib is inserted between the second inclined surface sections of the positioning nails positioned at two sides of the sealing rib;
the top surface of the large cover is provided with a plurality of exhaust holes, the exhaust holes are communicated with the inner cavity of the bottom shell, and a circle of heat-sealing ribs are arranged on the top surface of the large cover around the exhaust holes;
one side of the small cover is connected with the heat-sealing ribs through heat sealing, and the small cover and the heat-sealing ribs form a sealing cavity, the exhaust holes are located in the sealing cavity, a concentrated exhaust hole is further formed in the side portion, corresponding to the heat-sealing ribs, of the large cover and communicated with the sealing cavity, and an air filter sheet is fixed in the concentrated exhaust hole.
As an improvement of the invention, a plurality of partition plates are arranged in the sealing cavity, the tops of the partition plates are connected with the small cover through heat sealing, so that the sealing cavity is divided into a plurality of independent spaces, the independent spaces correspond to the exhaust holes in a one-to-one manner, the exhaust holes are positioned in the independent spaces, a gap is formed in each partition plate, two adjacent independent spaces are communicated through the gap, and the gaps on two adjacent partition plates are arranged in a staggered manner.
As an improvement of the present invention, at least two positioning holes are formed in the sealing cavity, and a positioning post is formed on the small cover corresponding to each of the two positioning holes and inserted into the positioning hole.
As an improvement of the invention, a circle of connecting ribs matched with the small cover is arranged on the small cover corresponding to the heat-sealing ribs, matching ribs matched with the small cover corresponding to the partition plate are arranged on the small cover, the matching ribs are connected with the partition plate through heat sealing, and the heat-sealing ribs are connected with the connecting ribs through heat sealing.
As an improvement of the invention, the large cover is provided with an embedding groove corresponding to the heat-sealing rib, the heat-sealing rib is positioned in the embedding groove, the small cover is buckled in the embedding groove, and the edge of the small cover is connected with the edge of the embedding groove through heat sealing.
As a refinement of the invention, the inclination of the first oblique section relative to the vertical is 10 ° and the inclination of the second oblique section relative to the vertical is 5 °.
Compared with the prior art, the invention has the following advantages:
1. the ribs of the bottom shell and the sealing ribs of the large cover adopt a convex and concave isosceles trapezoid matching mode; the isosceles trapezoid structures are matched with each other, have the same inclination surface and the function of automatic alignment and wedging, and are matched with the shell cover to automatically position in the assembling and matching process, so that product dislocation cannot occur, the inner ribs can be completely sealed without gaps when being thermally sealed and bonded, and inner air leakage cannot be generated;
2. the positioning nail of the large cover is provided with an arc surface section and two inclined surface sections, the arc surface section of the positioning nail has a guiding effect in the alignment process, ribs of the bottom shell can be accurately aligned in a groove formed between the two positioning nails, the ribs of the bottom shell slide through the arc surface section and then slide along the inclined surface section with the inclination of 10-15 degrees, the inclined surface sections with the inclination of 10-15 degrees have a clamping effect and cannot bounce, when the ribs slide through the inclined surface section with the inclination of 10-15 degrees, the ribs enter the inclined surface sections with the inclination of 5-8 degrees, the inclined surface sections can play a role of accurate positioning, and meanwhile, the clamping effect is achieved, so that the positioning is more accurate;
3. the heat-seal rib of big lid forms a sealed chamber through heat-seal melting bonding on the little lid, especially when the fine baffle battery of the glass of encapsulation list check independent valve structure (poor liquid formula), the trace liquid of taking out among the battery exhaust process can the adhesion on sealed intracavity wall, keeps in sealed chamber (can discharge through concentrating the exhaust hole through gasification in the use), avoids leading to battery outward appearance weeping.
Drawings
FIG. 1 is a perspective view of the bottom case of the present invention;
FIG. 2 is a bottom perspective view of the large lid;
FIG. 3 is a top perspective view of the large lid;
FIG. 4 is a perspective view of the small lid;
FIG. 5 is a top view of the large lid;
FIG. 6 is a side view of the large lid;
fig. 7 is a partial sectional view of the large lid.
List of reference numerals: 10 bottom shells, 11 ribs, 111 alignment sheets, 20 large covers, 21 sealing ribs, 211 isosceles trapezoid grooves, 22 positioning nails, 221 positioning surfaces, 222 arc surface sections, 223 first inclined surface sections, 224 second inclined surface sections, 23 exhaust holes, 24 heat sealing ribs, 25 concentrated exhaust holes, 26 partition plates, 261 gaps, 27 positioning holes, 30 small covers, 31 positioning columns, 32 connecting ribs and 33 matching ribs.
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.
Example (b): referring to fig. 1-7, a structure for matching a battery case with a battery cover comprises a bottom case 10, a large cover 20 and a small cover 30, wherein the top end of the bottom case 10 is open, a plurality of ribs 11 are arranged at intervals in the inner cavity of the bottom case 10, alignment pieces 111 are arranged on the tops of the ribs 11 in an upward protruding manner, and the alignment pieces 111 are in an isosceles trapezoid shape; the bottom shell 10, the ribs 11 and the alignment sheet 111 are integrally formed;
the bottom surface of the large cover 20 is buckled at the top end of the bottom shell 10, the bottom surface of the large cover 20 is provided with a sealing rib 21 which is matched with the bottom surface in an aligning way corresponding to each rib 11, the sealing rib 21 is provided with an isosceles trapezoid groove 211 which is matched with the sealing rib 111 corresponding to the aligning piece 111, the aligning piece 111 is clamped in the isosceles trapezoid groove 211, and the sealing rib 21 of the large cover 20 is connected with the ribs 11 in the bottom shell 10 through heat sealing (heating fusion);
a circle of positioning nails 22 are fixed on the bottom surface of the large cover 20 along the edge thereof, the side part of each positioning nail 22 is provided with a positioning surface 221, a plurality of pairs of positioning nails 22 are arranged on the sealing rib 21 along the two sides of the sealing rib in the length direction, and the positioning surfaces 221 of each pair of positioning nails 22 are oppositely arranged; the positioning surface 221 comprises an arc surface section 222, a first inclined surface section 223 and a second inclined surface section 224, the arc surface section 222 is arranged close to the lower end of the positioning nail 22, the second inclined surface section 224, the first inclined surface section 223 and the arc surface section 222 are sequentially connected from top to bottom, the inclination of the first inclined surface section 223 relative to a vertical plane is 10-15 degrees, and the inclination of the second inclined surface section 224 relative to the vertical plane is 5-8 degrees; preferably, the first inclined surface section 223 has an inclination of 10 ° with respect to the vertical plane, and the second inclined surface section 224 has an inclination of 5 ° with respect to the vertical plane;
the second slope section 224 of the positioning nail 22 at the edge of the large lid 20 abuts against the top end inner wall of the bottom case 10, and the sealing rib 21 is inserted between the second slope sections 224 of the positioning nails 22 at both sides of the sealing rib 21;
the top surface of the big cover 20 is provided with a plurality of vent holes 23, the vent holes 23 are communicated with the inner cavity of the bottom shell 10, and the top surface of the big cover 20 is provided with a circle of heat-sealing ribs 24 around the vent holes 23;
one side of the small cover 30 is connected with the heat-sealing ribs 24 through heat sealing, and forms a sealed cavity with the heat-sealing ribs 24, the plurality of exhaust holes 23 are all positioned in the sealed cavity, the large cover 20 is also provided with a centralized exhaust hole 25 corresponding to the side part of the heat-sealing ribs 24, the centralized exhaust hole 25 is communicated with the sealed cavity, an air filter sheet is fixed in the centralized exhaust hole 25, the air filter sheet can adopt the existing PTFE air filter sheet or polyethylene air filter sheet, and has the characteristics of air permeability and water impermeability;
the rib 11 of the bottom shell 10 and the sealing rib 21 of the large cover 20 adopt a convex and concave isosceles trapezoid matching mode; the isosceles trapezoid structures are equal in inclination surface in matching, have the function of automatic alignment and wedging, and are matched and automatically positioned by the shell cover in the assembling and matching process, so that the center of a product can be found firstly when the hot stamping die is adjusted, and then the die is locked, so that product dislocation cannot occur, the inner ribs can be completely closed without gaps when being thermally sealed and bonded, and inner air leakage cannot occur;
the positioning nail 27 of the big cover 20 is provided with an arc surface section 222 and two inclined surface sections, the arc surface section 222 of the positioning nail 27 has a guiding function in the alignment process, ribs of the bottom shell 10 can be accurately aligned to a groove formed between the two positioning nails 27, the ribs of the bottom shell 10 slide along the first inclined surface section 223 with the inclination of 10 degrees after sliding through the arc surface section 222, the first inclined surface section 223 with the inclination of 10 degrees has a clamping function and cannot bounce, and when the ribs slide through the first inclined surface section 223 with the inclination of 10 degrees, the ribs enter the second inclined surface section 224 with the inclination of 5 degrees, the inclined surface section can play a precise positioning function and also has a clamping function, so that the positioning is more accurate;
the heat-sealing ribs 24 of the large cover 20 are bonded on the small cover 30 through heat-sealing melting to form a sealing cavity, particularly when the glass fiber separator battery lean solution of the single-cell independent valve structure is packaged, trace liquid brought out in the battery exhaust process can be adhered to the inner wall of the sealing cavity, and can be discharged through the concentrated exhaust holes through gasification in the process of temporary storage in the sealing cavity, so that the appearance leakage of the battery is avoided.
Be provided with a plurality of baffles 26 in the sealed intracavity, the top of a plurality of baffles 26 all links together through the heat-seal with tegillum 30, separate into a plurality of independent spaces with sealed chamber with this, independent space and exhaust hole 23 one-to-one, exhaust hole 23 is located independent space, a breach 261 has been seted up on baffle 26, two adjacent independent spaces are linked together through breach 261, breach 261 dislocation set on two adjacent baffles 26, the dislocation set of breach 261, form the structure similar to the maze, and can realize concentrating the exhaust, especially to the wet poor liquid type battery of lotus that uses the fine baffle equipment of glass, can play the outflow of furthest's separation weeping when crouching.
At least two positioning holes 27 are formed in the sealing cavity, a positioning column 31 is formed in the small cover 30 corresponding to the two positioning holes 27, the positioning column 31 is inserted into the positioning holes 27, and the quick positioning effect can be achieved in the assembling process.
A circle of connecting ribs 32 matched with the heat-sealing ribs 24 are arranged on the small cover 30 corresponding to the heat-sealing ribs 24, matching ribs 33 matched with the partition plates 26 are arranged on the small cover 30 corresponding to the partition plates 26, the matching ribs 33 are connected with the partition plates 26 through heat sealing, the heat-sealing ribs 24 are connected with the connecting ribs 32 through heat sealing, and therefore the small cover and the partition plates are convenient to seal, position and connect.
An caulking groove is formed in the large cover 20 corresponding to the heat-sealing ribs 24, the heat-sealing ribs 24 are located in the caulking groove, the small cover 30 is buckled in the caulking groove, the edge of the small cover 30 is connected with the edge of the caulking groove through heat sealing, and the heat-sealing connection between the small cover and the heat-sealing ribs 24 of the large cover 20 forms two sealing connections together, so that the sealing performance of the large cover is improved.
The technical means disclosed in the invention scheme are not limited to the technical means disclosed in the above embodiments, but also include the technical scheme formed by any combination of the above technical features. It should be noted that those skilled in the art can make various improvements and modifications without departing from the principle of the present invention, and such improvements and modifications are also considered to be within the scope of the present invention.
Claims (6)
1. The utility model provides a cooperation structure of battery case and battery cover, includes drain pan (10), big lid (20) and little lid (30), its characterized in that: the top end of the bottom shell (10) is open, a plurality of ribs (11) are arranged in the inner cavity of the bottom shell (10) at intervals, aligning pieces (111) are arranged at the tops of the ribs (11) in an upward protruding mode, and the aligning pieces (111) are in an isosceles trapezoid shape;
the bottom surface of the large cover (20) is buckled at the top end of the bottom shell (10), sealing ribs (21) which are matched with the ribs in an aligning mode are arranged on the bottom surface of the large cover (20) corresponding to the ribs (11), isosceles trapezoid grooves (211) which are matched with the sealing ribs (21) are formed in the sealing ribs (21) corresponding to the aligning pieces (111), the aligning pieces (111) are clamped in the isosceles trapezoid grooves (211), and the sealing ribs (21) of the large cover (20) are connected with the ribs (11) in the bottom shell (10) through heat sealing;
a circle of positioning nails (22) are fixed on the bottom surface of the large cover (20) along the edge of the bottom surface, a positioning surface (221) is arranged on the side part of each positioning nail (22), a plurality of pairs of positioning nails (22) are arranged on the sealing rib (21) along the two sides of the sealing rib in the length direction, and the positioning surfaces (221) of each pair of positioning nails (22) are oppositely arranged; the positioning surface (221) comprises an arc surface section (222), a first inclined surface section (223) and a second inclined surface section (224), the arc surface section (222) is arranged close to the lower end of the positioning nail (22), the second inclined surface section (224), the first inclined surface section (223) and the arc surface section (222) are sequentially connected from top to bottom, the inclination of the first inclined surface section (223) relative to a vertical plane is 10-15 degrees, and the inclination of the second inclined surface section (224) relative to the vertical plane is 5-8 degrees;
the second inclined surface sections (224) of the positioning nails (22) positioned at the edge of the big cover (20) are abutted against the inner wall of the top end of the bottom shell (10), and the sealing ribs (21) are inserted between the second inclined surface sections (224) of the positioning nails (22) positioned at two sides of the sealing ribs (21);
a plurality of exhaust holes (23) are formed in the top surface of the large cover (20), the exhaust holes (23) are communicated with the inner cavity of the bottom shell (10), and a circle of heat-sealing ribs (24) are arranged on the top surface of the large cover (20) around the exhaust holes (23);
one side of little lid (30) links together through the heat-seal with heat-seal rib (24), and with heat-seal rib (24) form a sealed chamber, and is a plurality of exhaust hole (23) all are located sealed intracavity, a concentrated exhaust hole (25) has still been seted up to the lateral part that corresponds heat-seal rib (24) on big lid (20), should concentrate exhaust hole (25) with sealed chamber is linked together, concentrate exhaust hole (25) internal fixation has a filter disc.
2. The fitting structure of a battery case and a battery cover according to claim 1, wherein: be provided with a plurality of baffles (26) in the sealed intracavity, it is a plurality of the top of baffle (26) all with tegillum (30) link together through the heat-seal, with this will a plurality of independent spaces are separated into in the sealed chamber, independent space with exhaust hole (23) one-to-one, exhaust hole (23) are located in the independent space, a breach (261), adjacent two have been seted up on baffle (26) independent space passes through breach (261) are linked together, breach (261) dislocation set on two adjacent baffles (26).
3. The fitting structure of a battery case and a battery cover according to claim 1, wherein: at least two positioning holes (27) are formed in the sealing cavity, positioning columns (31) are formed in the small cover (30) corresponding to the two positioning holes (27), and the positioning columns (31) are inserted into the positioning holes (27).
4. The fitting structure of a battery case and a battery cover according to claim 2, wherein: correspond on little lid (30) heat-seal rib (24) seted up round rather than matched with connecting rib (32), correspond on little lid (30) baffle (26) seted up rather than matched with rib (33), cooperation rib (33) through the heat-seal with baffle (26) link together, heat-seal rib (24) through the heat-seal with connecting rib (32) link together.
5. The fitting structure of a battery case and a battery cover according to claim 1, wherein: correspond on big lid (20) heat-seal rib (24) have seted up an caulking groove, heat-seal rib (24) are located in the caulking groove, little lid (30) lock is in the caulking groove, and the edge of little lid (30) with the edge of caulking groove links together through the heat-seal.
6. The fitting structure of a battery case and a battery cover according to claim 1, wherein: the first inclined surface section (223) has an inclination of 10 ° with respect to the vertical plane and the second inclined surface section (224) has an inclination of 5 ° with respect to the vertical plane.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021759017.2U CN212392339U (en) | 2020-08-20 | 2020-08-20 | Cooperation structure of battery case and battery cover |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021759017.2U CN212392339U (en) | 2020-08-20 | 2020-08-20 | Cooperation structure of battery case and battery cover |
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| CN212392339U true CN212392339U (en) | 2021-01-22 |
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| CN202021759017.2U Active CN212392339U (en) | 2020-08-20 | 2020-08-20 | Cooperation structure of battery case and battery cover |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2023004648A1 (en) * | 2021-07-28 | 2023-02-02 | 宁德时代新能源科技股份有限公司 | Battery, electrical device, method for preparing battery, and apparatus for preparing battery |
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2020
- 2020-08-20 CN CN202021759017.2U patent/CN212392339U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2023004648A1 (en) * | 2021-07-28 | 2023-02-02 | 宁德时代新能源科技股份有限公司 | Battery, electrical device, method for preparing battery, and apparatus for preparing battery |
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