CN217134506U - Battery cover plate assembly and power battery - Google Patents
Battery cover plate assembly and power battery Download PDFInfo
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- CN217134506U CN217134506U CN202220785436.6U CN202220785436U CN217134506U CN 217134506 U CN217134506 U CN 217134506U CN 202220785436 U CN202220785436 U CN 202220785436U CN 217134506 U CN217134506 U CN 217134506U
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- cover plate
- insulation
- insulation sheet
- narrow side
- bare
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Abstract
The utility model provides a battery cover plate subassembly and power battery relates to the technical field of the new forms of energy, this battery cover plate subassembly, including apron main part and insulation system, two all be provided with infiltration hole on the end insulating piece, and two the crisscross setting of infiltration hole on the end insulating piece. The utility model provides a be provided with infiltration hole on the end insulating piece of battery cover board subassembly, when two end insulating piece parcels in the ground of naked electric core, infiltration hole on two end insulating pieces does not coincide, and the crisscross setting of infiltration hole on two end insulating pieces promptly makes naked electric core and the thorough isolation of shell under the prerequisite that does not influence the electrolyte infiltration like this, and then the naked electric core of this insulation construction parcel can reach insulating purpose.
Description
Technical Field
The utility model belongs to the technical field of the technique of the new forms of energy and specifically relates to a battery cover plate subassembly and power battery are related to.
Background
The insulation structure of the battery cover plate component is used for preventing the side wall and the bottom surface of the naked electric core from contacting with the shell; but in order to avoid insulating structure to influence the immersion of the electrolyte of naked electric core, be provided with infiltration hole on insulating structure, lead to like this to make naked electric core and shell keep apart thoroughly, have safe implication.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide a battery cover plate subassembly and power battery to alleviate insulation construction and go up to have the infiltration hole, can't realize the technical problem that naked electric core and shell thoroughly kept apart.
In a first aspect, the utility model provides a battery cover plate assembly, which comprises a cover plate main body and an insulation structure, wherein the insulation structure comprises an upper insulation sheet, a main insulation sheet, a side insulation sheet and a bottom insulation sheet;
the long sides of the upper insulation sheet are respectively provided with one main insulation sheet, and the short sides of the main insulation sheet are respectively provided with one side insulation sheet;
the bottom insulating sheet is arranged on the long edge of the main insulating sheet far away from the upper insulating sheet;
and the two bottom insulating sheets are provided with infiltration holes, and the infiltration holes on the two bottom insulating sheets are arranged in a staggered manner.
In an alternative embodiment, the lower end of the cover plate main body is provided with a convex hull.
In an alternative embodiment, the upper insulation sheet is thermally fused with the lower plastic on the cover plate main body.
The utility model provides a be provided with infiltration hole on the end insulating piece of battery cover board subassembly, when two end insulating piece parcels in the ground of naked electric core, infiltration hole on two end insulating pieces does not coincide, and the crisscross setting of infiltration hole on two end insulating pieces promptly makes naked electric core and the thorough isolation of shell under the prerequisite that does not influence the electrolyte infiltration like this, and then the naked electric core of this insulation construction parcel can reach insulating purpose.
In a second aspect, the present invention provides a power battery, including any one of the above-mentioned embodiments.
In optional embodiment, still include naked electric core group, naked electric core group includes a plurality of naked electric cores that set up side by side, the apron main part set up in naked electric core group's upper end and with naked electric core is connected, insulation system wraps up naked electric core group.
In an optional embodiment, the bare cell group comprises two bare cells arranged side by side, and the width direction of the bare cells is the same as the width direction of the cover plate main body; the narrow side surface of the naked battery cell is a first narrow side surface, and the narrow side surface of the naked battery cell group is a second narrow side surface; the first narrow side of two naked electric cores forms the narrow side of second of naked electric core group.
In an alternative embodiment, the side insulating sheet is used to cover the second narrow side surface, and the two side insulating sheets form a first overlapping area on the second narrow side surface.
In an alternative embodiment, the first narrow side surfaces are arc surfaces, a distance between straight lines formed by arc midpoints of the two first narrow side surfaces is m, and a width of the first overlapping region in the width direction of the second narrow side surface is n; and m is greater than n.
In an alternative embodiment, the bottom insulation sheet is used to cover the bottom surface of the bare cell group, and the two bottom insulation sheets form a second overlapping area on the bottom surface; and the infiltration holes on the two bottom insulation sheets in the second overlapping area are arranged in a staggered manner.
In an alternative embodiment, a fixing band for firmly wrapping the insulating structure on the bare cell group is arranged on the insulating structure.
The utility model also provides a power battery, this power battery adopt foretell battery cover plate subassembly to have all beneficial effects of battery cover plate subassembly.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the embodiments or the technical solutions in the prior art will be briefly described below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.
Fig. 1 is a schematic structural diagram of a battery cover plate assembly according to an embodiment of the present invention;
fig. 2 is a schematic structural diagram of an insulation structure of the battery cover plate assembly shown in fig. 1;
fig. 3 is a schematic structural view illustrating the connection of the battery cover plate assembly and the bare cell pack shown in fig. 1;
fig. 4 is a schematic structural view of the battery cover plate assembly shown in fig. 1 without wrapping the bare cell assembly;
fig. 5 is a schematic cross-sectional view a-a of the structure of the battery cover plate assembly shown in fig. 4 without wrapping the bare cell assembly;
fig. 6 is a partially enlarged view of B of a sectional view of a structural view a-a of the battery cover plate assembly shown in fig. 5 without wrapping the bare cell group;
fig. 7 is another structure view illustrating the connection of the battery cover plate assembly and the bare cell pack shown in fig. 1.
Icon: 100-an insulating structure; 101-upper insulation sheet; 102-a main insulating sheet; 103-side insulating sheet; 104-bottom insulating sheet; 200-avoiding holes; 300-infiltrating holes; 400-convex hull; 500-a cover plate body; 600-a first narrow side; 700-a first overlap region; 800-fixing the belt; 900-a second overlap region; 110-connecting piece.
Detailed Description
The technical solution of the present invention will be described clearly and completely with reference to the following embodiments, and it should be understood that the described embodiments are some, but not all embodiments of the present invention. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.
Examples
Referring to fig. 1 to 3, the present invention provides a battery cover plate assembly, which includes a cover plate main body 500 and an insulation structure 100, wherein the insulation structure 100 includes an upper insulation sheet 101, a main insulation sheet 102, a side insulation sheet 103 and a bottom insulation sheet 104;
the long sides of the upper insulation sheet 101 are respectively provided with one main insulation sheet 102, and the short sides of the main insulation sheet 102 are respectively provided with one side insulation sheet 103;
the bottom insulation sheet 104 is arranged on the long side of the main insulation sheet 102 far away from the upper insulation sheet 101;
the bottom insulating sheets 104 are provided with infiltration holes 300, and the infiltration holes 300 on the bottom insulating sheets 104 are arranged in a staggered manner.
In some embodiments, the battery cover plate assembly includes a cover plate main body 500 and an insulation structure 100, the upper insulation sheet 101 is connected to the cover plate main body 500, the main insulation sheet 102 is used to wrap the main side surface of the bare cell group, the side insulation sheet 103 is used to wrap the second narrow side surface of the bare cell group, and the bottom insulation sheet 104 is used to wrap the bottom surface of the bare cell group, so that the insulation structure 100 wraps the bare cell group.
In order to avoid insulating structure 100 parcel naked electric core group after, influence the infiltration of the electrolyte of naked electric core group, be provided with infiltration hole 300 on end insulating piece 104, bottom surface and the shell of naked electric core group can thoroughly be kept apart in order to make end insulating piece 104, insulating piece 104 is in the bottom surface of parcel naked electric core group at two ends, infiltration hole 300 on two end insulating pieces 104 makes crisscross the setting, when influencing the electrolyte infiltration like this, make naked electric core group and battery case physics keep apart, and can save end layer board part like this, reduce whole power battery's cost.
And this insulation system 100 wraps up from the upper end of naked electric core group, has avoided insulation system 100 to surpass battery case like this, causes apron main part 500 and the bad problem of battery case welding, has improved power battery's production efficiency to manufacturing cost has been reduced.
Referring to fig. 1 and 6, in an alternative embodiment, a convex hull 400 is provided at the lower end of the cover plate body 500.
The cover plate main body 500 is generally provided with a pole, an explosion-proof valve, a convex hull 400, a liquid injection hole and other conventional structures; in order to enable the upper insulation sheet 101 to be connected to the cap plate main body 500, a plurality of escape holes 200 are provided in the upper insulation sheet 101.
Be provided with convex closure 400 at the lower extreme of apron main part 500, generally be provided with three convex closure 400, be provided with a convex closure 400 respectively at the both ends of the length direction of apron main part 500, explosion-proof valve protection casing department at apron main part 500 also is provided with a convex closure 400, not only can effectually support naked electric core and carry out insulation protection like this, prevent connection piece 110, utmost point ear and naked electric core contact cause interior short circuit, can also save the insulating support between connection piece 110 and the naked electric core, electric core manufacturing cost has been reduced.
In an alternative embodiment, the upper insulation sheet 101 is thermally fused to the lower plastic on the cover plate body 500.
Be provided with a plurality of hot melt points between battery apron main part 500 and last insulating piece 101, utmost point ear makes apron main part 500 and the firm connection of last insulating piece 101, can prevent like this that insulation system 100 from when the parcel, causes the flagging power to connection piece 110 on the apron main part 500 to avoid connection piece 110 flagging to insert in the naked electric core group, thereby cause the risk of interior short circuit.
The utility model provides a be provided with infiltration hole 300 on the end insulating piece 104 of battery cover board subassembly, when two end insulating piece 104 parcels in the ground of naked electric core, infiltration hole 300 on two end insulating pieces 104 does not coincide, and infiltration hole 300 on two end insulating pieces 104 is crisscross to be set up promptly, is not influencing under the prerequisite that electrolyte was infiltrated like this, makes naked electric core and the thorough isolation of shell, and then the naked electric core of this insulation system 100 parcel can reach insulating purpose.
Referring to fig. 1 to 7, the present invention provides a power battery, including the battery cover plate assembly according to any one of the foregoing embodiments.
In optional embodiment, still include naked electric core group, naked electric core group includes a plurality of naked electric cores that set up side by side, apron main part 500 set up in naked electric core group's upper end and with naked electric core is connected, insulation system 100 parcel naked electric core group.
In an optional embodiment, the bare cell group includes two bare cells arranged side by side, and the width direction of the bare cells is the same as the width direction of the cover plate main body 500; the narrow side of the bare cell is a first narrow side 600, and the narrow side of the bare cell group is a second narrow side; the first narrow side 600 of two bare cells forms the second narrow side of the bare cell pack.
In an alternative embodiment, the side insulation sheet 103 is used to cover the second narrow side surface, and the two side insulation sheets 103 form a first overlapping area 700 on the second narrow side surface.
Referring to fig. 3 and 4, in an alternative embodiment, the first narrow side 600 is a circular arc surface, a distance between straight lines formed by circular arc midpoints of the two first narrow side 600 is m, and a width of the first overlapping region 700 in a width direction of the second narrow side is n; and m is greater than n.
In some embodiments, after insulating structure 100 is wrapped around the bare cell pack, the bare cell pack needs to be installed into a battery case; since the thickness of the first overlapping area 700 is twice the thickness of the side insulation sheet 103, the thickness of the second narrow side of the bare cell pack wrapped around the insulation structure 100 is increased, so that the bare cell pack cannot be smoothly assembled into the battery case.
After two naked electric cores set up side by side, two first narrow side 600 are the arc surface, lead to having certain gap between two first narrow side 600, when the width n of first overlapping area 700 is less than the sharp distance m that the circular arc mid point of two first narrow side 600 formed, first overlapping area 700 can be accomodate between two naked electric cores, makes assembly that naked electric core group can be smooth and easy to battery case like this in, has reduced the assembly degree of difficulty.
Referring to fig. 7, in an alternative embodiment, the bottom insulation sheet 104 is used to cover the bottom surface of the bare cell group, and two bottom insulation sheets 104 form a second overlapping area 900 on the bottom surface; the infiltration holes 300 on the two bottom insulation sheets 104 of the second overlapping area 900 are arranged in a staggered manner.
In an alternative embodiment, a fixing band 800 for firmly wrapping the insulation structure 100 on the bare cell set is disposed on the insulation structure 100.
The fixing tape 800 may be an insulating tape for firmly fixing the first overlapping area 700 and the second overlapping area 900, so that the connection between the insulating structure 100 and the bare cell set is achieved, and the production efficiency is improved compared to the connection between the first overlapping area 700 and the second overlapping area 900 by using a hot melt.
The utility model also provides a power battery, this power battery adopt foretell battery cover plate subassembly to have all beneficial effects of battery cover plate subassembly.
Finally, it should be noted that: the above embodiments are only used to illustrate the technical solution of the present invention, and not to limit the same; although the present invention has been described in detail with reference to the foregoing embodiments, it should be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some or all of the technical features may be equivalently replaced; such modifications or substitutions do not depart from the scope of the invention in its corresponding aspects.
Claims (10)
1. A battery cover plate assembly is characterized by comprising a cover plate main body (500) and an insulation structure (100), wherein the insulation structure (100) comprises an upper insulation sheet (101), a main insulation sheet (102), a side insulation sheet (103) and a bottom insulation sheet (104);
the long sides of the upper insulation sheet (101) are respectively provided with one main insulation sheet (102), and the short sides of the main insulation sheet (102) are respectively provided with one side insulation sheet (103);
the bottom insulation sheet (104) is arranged on the long side of the main insulation sheet (102) far away from the upper insulation sheet (101);
the two bottom insulation sheets (104) are provided with infiltration holes (300), and the infiltration holes (300) on the two bottom insulation sheets (104) are arranged in a staggered manner.
2. The battery cover plate assembly according to claim 1, wherein a convex hull (400) is provided at a lower end of the cover plate main body (500).
3. The battery cover plate assembly according to claim 1, wherein the upper insulation sheet (101) is thermally fused to the lower plastic on the cover plate body (500).
4. A power cell comprising a cell cover assembly according to any one of claims 1 to 3.
5. The power battery according to claim 4, further comprising a bare cell group, wherein the bare cell group comprises a plurality of bare cells arranged side by side, the cover plate main body (500) is arranged at the upper end of the bare cell group and connected with the bare cells, and the insulation structure (100) wraps the bare cell group.
6. The power battery according to claim 5, wherein the bare cell group comprises two bare cells arranged side by side, and the width direction of the bare cells is the same direction as the width direction of the cover plate main body (500); the narrow side surface of the naked battery cell is a first narrow side surface (600), and the narrow side surface of the naked battery cell group is a second narrow side surface; the first narrow sides (600) of two bare cells form the second narrow side of the bare cell pack.
7. The power cell according to claim 6, wherein the side insulation sheet (103) is used to cover the second narrow side face, and the two side insulation sheets (103) form a first overlapping area (700) on the second narrow side face.
8. The power battery according to claim 7, wherein the first narrow side (600) is a circular arc surface, the distance between the straight lines formed by the circular arc midpoints of the two first narrow side (600) is m, and the width of the first overlapping region (700) in the width direction of the second narrow side is n; and m is greater than n.
9. The power battery according to claim 7, wherein the bottom insulation sheet (104) is used to cover the bottom surface of the bare cell core set, and two bottom insulation sheets (104) form a second overlapping area (900) on the bottom surface; the infiltration holes (300) on the two bottom insulation sheets (104) of the second overlapping area (900) are arranged in a staggered mode.
10. The power battery according to claim 5, wherein a fixing band (800) for firmly wrapping the insulation structure (100) on the bare cell group is provided on the insulation structure (100).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220785436.6U CN217134506U (en) | 2022-04-02 | 2022-04-02 | Battery cover plate assembly and power battery |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220785436.6U CN217134506U (en) | 2022-04-02 | 2022-04-02 | Battery cover plate assembly and power battery |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN217134506U true CN217134506U (en) | 2022-08-05 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202220785436.6U Active CN217134506U (en) | 2022-04-02 | 2022-04-02 | Battery cover plate assembly and power battery |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN217134506U (en) |
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2022
- 2022-04-02 CN CN202220785436.6U patent/CN217134506U/en active Active
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