CN207303210U - A kind of power battery - Google Patents
A kind of power battery Download PDFInfo
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- CN207303210U CN207303210U CN201720481233.7U CN201720481233U CN207303210U CN 207303210 U CN207303210 U CN 207303210U CN 201720481233 U CN201720481233 U CN 201720481233U CN 207303210 U CN207303210 U CN 207303210U
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- pole
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Abstract
The utility model belongs to field of batteries, a kind of more particularly to power battery, including head cover, battery core and housing, top seal is installed on housing, battery core is placed in housing, head cover is equipped with the first pole and the second pole, battery core is equipped with the first lug and the second lug, first lug is electrically connected by the first connection sheet with the first pole, second lug is electrically connected by the second connection sheet with the second pole, first connection sheet includes the first lug connecting portion and the first pole connecting portion being bent to form from the first lug connecting portion to side, first pole connecting portion is connected with the first lug connecting portion by bending cambered surface, first pole connecting portion is being equipped with fuse part at bending cambered surface, first pole is connected to the first pole connecting portion, first lug is connected to the first lug connecting portion.On the one hand, the utility model can fuse rapidly in short circuit, to ensure the security performance of battery；On the other hand, existing collapsible soft even part is substituted by connection sheet, it is possible to increase the energy density of battery.
Description
Technical field
The utility model belongs to power battery technology field, more particularly to a kind of power battery.
Background technology
Since lithium-ion-power cell realizes commercialization, because of its light weight, voltage is high, small, memory-less effect, ratio
Energy is high, has extended cycle life, it is environmental-friendly many advantages, such as, rapidly in Portable power source, mobile phone, notebook electricity
Brain, camera and other portable electronic product fields constantly expand popularization and application.With the exhaustion of fossil energy, and
Worldwide pollution aggravation, people increasingly carry out the cry of clean energy resource, so that lithium ion battery captures rapidly
This critical positions of fossil energy.
The volume energy density lifting of lithium-ion-power cell, is further lift its commercially competitive advantage important
Aspect.Because using thinner isolation film, anode and cathode collector and pack case, there is its shortcoming in the methods of compacted density of higher,
Battery safety can be reduced as isolation film is thinner, and the vacuum drying time that the compacted density of higher can then allow before fluid injection is prolonged
It is long, room temperature or quiescence in high temperature time lengthening after fluid injection, and then increase process costs etc., this causes the structure design of compact and reasonable
To lifting volume energy density important in inhibiting.
In order to realize the overcurrent protection function of battery, as shown in Figure 1, generally by being set in flexible link 30 in correlation technique
The mode for putting power-off insurance hole forms overcurrent electricity cutting security architecture, and one end of flexible link 30 is welded with the bottom of pole 20,
Its other end is welded with lug 10, realizes the connection of lug 10 and pole 20.Although this mode can play overcurrent protection work(
Can, but since flexible link 30 has certain thickness, it is folded in inside battery, it is necessary to take certain space, so that electric
Pond volume energy density reduces.
In addition, in order to lift the energy density of battery, also have in the prior art using lug set insurance hole or
Pole set insurance hole, the way for then making lug be directly connected with pole, although so eliminate set inside housings it is soft
The trouble of connecting component, has saved cost, saves enclosure interior space, improves the energy density of battery, but both
Way is but difficult to realize large-scale promotion use at present, the reason is that both modes have the following disadvantages：On the one hand, if making lug
Be directly connected to pole, then there are not prison welding, connection reliability is low, technological requirement is high the defects of；On the other hand, if in lug
Insurance hole is set, when high temperature fusing occurs for lug, battery core can be caused to scrap；If setting insurance hole in pole, when lug occurs
When high temperature fuses, then pole can be made to fail；And areas of disconnection occurs after lug or pole set insurance hole, thus it is unfavorable
In being uniformly distributed for electric current, while also the structural strength of lug or pole can be caused to seriously affect.
Utility model content
The purpose of this utility model is that：For the design of existing power battery structure is not compact, energy density is low, overcurrent energy
The deficiency of force difference, and a kind of structure design compact and reasonable is provided, there is higher conveyance capacity and the power electric of higher energy density
Pond.
To achieve the above object, the utility model adopts the following technical solution：
A kind of power battery, including head cover, battery core and housing, the top seal are installed on the housing, the electricity
Core is placed in the housing, and the head cover is provided with the first pole and the second pole, and the battery core is provided with the first lug and
Two lugs, first lug are electrically connected by the first connection sheet and first pole, and second lug passes through second
Connection sheet is electrically connected with second pole, and first connection sheet includes the first lug connecting portion and by first lug
The first pole connecting portion that connecting portion is bent to form to side, the first pole connecting portion lead to the first lug connecting portion
The connection of bending cambered surface is crossed, the first pole connecting portion is being provided with fuse part, the first pole electricity at bending cambered surface
Property is connected to the first pole connecting portion, and first lug is electrically connected at the first lug connecting portion.
One kind as the utility model power battery is improved, and second connection sheet includes the second lug connecting portion, institute
The one end for stating the second lug connecting portion forms the second pole connecting portion to side-facing depressions, and second pole is electrically connected at described
Second pole connecting portion, second lug are electrically connected at the second lug connecting portion.
One kind as the utility model power battery is improved, and when the quantity of battery core is single, the first lug electrically connects
The side of the first lug connecting portion is connected to, the second lug is electrically connected at the side of the second lug connecting portion；When the quantity of battery core
For multiple (two or more) when, multiple first lugs are divided into two groups of both sides for being electrically connected at the first lug connecting portion, Duo Ge
Two lugs are divided into two groups of both sides for being electrically connected at the second lug connecting portion.
One kind as the utility model power battery is improved, and the first lug connecting portion is provided with first through hole, institute
State the second lug connecting portion and be provided with the second through hole.Wherein, first through hole is set primarily to right in the first lug connecting portion
The liquid injection hole on coping plate is answered, in order to carry out fluid injection to battery；And the second through hole is set in the second lug connecting portion, mainly
In order to correspond to the air hole of safe roll-over valve on coping plate, in order to the pressure release that can breathe freely in time during cell malfunctions, ensure
The security performance of battery.
One kind as the utility model power battery is improved, the pore size of the first through hole and second through hole
It is 1~20mm, is preferably 2~10mm.If first through hole is excessive, the conveyance capacity of the first connection sheet can be influenced；If first is logical
Hole is too small, then can reduce the fluid injection speed of electrolyte；If the second through hole is excessive, the conveyance capacity of the second connection sheet can be influenced；If
Second through hole is too small, then can influence battery and breathe freely relieving characteristics.
One kind as the utility model power battery is improved, and the fuse part includes insurance hole and/or insurance chamber, and
The insulation strengthening layer being coated on outside the insurance hole and/or insurance chamber.When battery short circuit, whole circuit moment produces very big
Electric current, since insurance hole and/or insurance cavity region area of passage are small, resistance is big, high temperature fusing can occur first, so as to protect electricity
Road.However, since the first connection sheet is generally made of copper sheet or aluminium flake, thus open up insurance hole and/or insurance in connection sheet
The mechanical strength in the region can be reduced after chamber, makes the first connection sheet be easy to be broken at insurance hole and/or insurance chamber；Cause
This, the utility model is by adding insulation strengthening layer, on the one hand, insulation strengthening layer can to the insurance hole of the first connection sheet and/
Or insurance cavity region plays reinforcing and protective effect；On the other hand, when battery short circuit adstante febre, the insurance hole of the first connection sheet
And/or insurance cavity region can form striking point, the insulation strengthening layer at striking point is melted and is covered on the section at striking point,
So as to thoroughly block circuit, avoid fusing position from having situation separated but still in each other's thoughts, thus further improve battery safety.
Wherein, the fuse part of the utility model preferably insures the structure of the additional insulation strengthening layer of chamber, due to this structure not
Can disconnect the side face of fuse part, therefore electric current can disperse to circulate by insuring the surrounding of chamber, beneficial to uniformly dividing for electric current
Cloth, while the first pole connecting portion is retained larger structural strength.
One kind as the utility model power battery is improved, and the insurance hole is blind hole or through hole, and the insurance chamber is
Spheroid chamber, cylinder body cavity or cube chamber.
One kind as the utility model power battery is improved, and the insulation strengthening layer is made of insulating resin, described exhausted
Edge resin is at least the one of epoxy resin, polyphenylene sulfide, polyformaldehyde, polyvinyl chloride, polypropylene, polyester resin and polycarbonate
Kind；Above-mentioned resin is respectively provided with good intensity and insulation performance, is fully able to meet use demand.
One kind as the utility model power battery is improved, and the shape of first connection sheet is in " mountain " font.Wherein,
The both sides of " mountain " font are electrically connected with the first lug, and the middle part of " mountain " font is then electrically connected with the first pole；The utility model will
First connection sheet is arranged to " mountain " font, and the first connection sheet can on the one hand realized with the first pole and the first lug respectively can
By connection；On the other hand, the conveyance capacity and fusing performance of the first connection sheet can so be effectively ensured, while can also be fully
Match and using inside battery space, improve battery energy density.
One kind as the utility model power battery is improved, and first connection sheet and second connection sheet are by aluminium
Piece or copper sheet are integrally formed.
One kind as the utility model power battery is improved, and the head cover includes coping plate and is arranged at the top
Relief valve, liquid injection hole and the safe roll-over valve of cover plate, first pole and the coping plate are electrically connected, second pole
Insulate and assemble with the coping plate, the safe roll-over valve and the coping plate are electrically connected, the liquid injection hole and described first
Through hole is oppositely arranged, and the safe roll-over valve is oppositely arranged with second through hole.
One kind as the utility model power battery is improved, and first pole includes the first matrix part and from the first base
The first trunk portion that body portion extends downwardly, the end sleeve of first trunk portion are equipped with the first conductive matrix, and described first is conductive
Matrix and first pole are electrically connected with first connection sheet, are set between first matrix part and the coping plate
Conductive sheet is equipped with, insulated enclosure circle is arranged between first trunk portion and the coping plate.
One kind as the utility model power battery is improved, and second pole includes the second matrix part and from the second base
The second trunk portion that body portion extends downwardly, the end sleeve of second trunk portion are equipped with the second conductive matrix, and described second is conductive
Matrix and second pole are electrically connected with second connection sheet, are set between second matrix part and the coping plate
Insulating trip is equipped with, insulated enclosure circle is arranged between second trunk portion and the coping plate.
Wherein, the utility model can so have by the way that the first pole and the second pole are set T-shaped package assembly
Effect improves the conveyance capacity on pole surface.
One kind as the utility model power battery is improved, and the insulated enclosure circle includes the first annular seal body, with
And the second annular seal body of protrusion, and second ring-type is close vertically from the axial end face of the first annular seal body
The internal diameter for sealing body is more than the internal diameter of the first annular seal body.By the way that insulated enclosure circle is arranged to double containment body structure, no
The problem of address only low existing power battery head cover sealing ring air-tightness, easy gas leakage, moreover it is possible to caused by preventing metal fillings
It is bad, so as to improve the sealing effect of insulated enclosure circle.
One kind as the utility model power battery is improved, and the radial section of the insulated enclosure circle is in "convex" shaped knot
Structure.
One kind as the utility model power battery is improved, the end of first trunk portion and second trunk portion
End be respectively arranged with the first riveting groove and the second riveting groove, the first conductive matrix is sheathed on the first riveting groove simultaneously
Closely be connected with first trunk portion, the second conductive matrix be sheathed on the second riveting groove and with second cylinder
Portion closely connects.
One kind as the utility model power battery is improved, and the coping plate, which is provided with, protrudes from the first convex of upper surface
Bag and the second convex closure, first convex closure and second convex closure form the first convex closure resettlement section in the lower surface of coping plate respectively
With the second convex closure resettlement section；The first mounting hole is provided with first convex closure, the second installation is provided with second convex closure
Hole；First pole is electrically connected through first mounting hole and first connection sheet, and second pole passes through institute
The second mounting hole is stated to be electrically connected with second connection sheet.The first conductive matrix and the second conductive matrix can be moved up during installation
In the first convex closure resettlement section and the second convex closure resettlement section that enter coping plate, while power battery basic performance is ensured, reduce
The height of pole inside housings, the installation space of bigger has been vacateed to battery core, makes battery structure compacter, so that dynamic
The energy density of power battery is further lifted.
One kind as the utility model power battery is improved, the described first conductive matrix, the insulated enclosure circle and institute
State and the first insulated plastic part is provided between coping plate, the described second conductive matrix, the insulated enclosure circle and coping plate
Between be provided with the second insulated plastic part.Set the first insulated plastic part and the second insulated plastic part can to above-mentioned parts into
Row is effectively fixed, while strengthens the sealing effect between above-mentioned parts.
One kind as the utility model power battery is improved, and first pole and second pole are aluminium pole
Column, copper-base column or Copper-Aluminum compound pole.Preferably, the first pole is aluminium pole, and the second pole is Copper-Aluminum compound pole, wherein,
To avoid copper and aluminium welding wiring stress from being broken, therefore copper and aluminium welding wiring is arranged between insulating trip and insulated enclosure circle.
One kind as the utility model power battery is improved, and the described first conductive matrix and the second conductive matrix are equal
For aluminium block or copper billet.Preferably, the first conductive matrix is aluminium block, and the second conductive matrix is copper billet.
One kind as the utility model power battery is improved, and the described first conductive matrix passes through riveting and laser welding phase
With reference to mode be closely connected with first trunk portion, the second conductive matrix is by riveting and laser welding is combined
Mode is closely connected with second trunk portion.The mode that riveting and laser welding are combined effectively increases pole and conductive base
The reliability of block connection, and compared to other welding manners, laser welding is efficiently, stable, uniformity is high, is fully able to meet
Welding requirements；Preferably, the laser welding is optical fiber lap welding or seam weld.
One kind as the utility model power battery is improved, and is provided between the coping plate and first matrix part
First positioning column；The second positioning column is provided between the coping plate and the first conductive matrix；The coping plate and described
The 3rd positioning column is provided between second matrix part；The 4th positioning is provided between the coping plate and the second conductive matrix
Column.Preferably, the quantity of first positioning column, the second positioning column, the 3rd positioning column and the 4th positioning column is disposed as at least
Two, set positioning column to ensure good locating effect, prevent from being shifted between parts in assembling process, in order to
Assembling.
The beneficial effects of the utility model are：Compared with the prior art, on the one hand, the utility model is connected by bending cambered surface
The the first pole connecting portion and the first lug connecting portion connect can fully match and using inside battery space, to substitute existing folding
Stacked flexible link, and also eliminate the setting of top cover support so that battery top is compact-sized rationally, so as to effectively improve
The energy density of battery；On the other hand, the utility model makes the first connection sheet by setting fuse part at bending cambered surface
It can fuse rapidly when short circuit occurs, so as to ensure the security performance of power battery.
Brief description of the drawings
Fig. 1 is the partial enlargement structural representation of power battery in the prior art.
Fig. 2 is one of structure diagram of the utility model.
Fig. 3 is the partial enlarged view of A in Fig. 2.
Fig. 4 is the partial enlarged view of B in Fig. 2.
Fig. 5 is the second structural representation of the utility model.
Fig. 6 is the partial enlarged view of C in Fig. 5.
Fig. 7 is battery core and the mounting structure schematic diagram of head cover in the utility model.
Fig. 8 is the structure diagram of the first connection sheet in the utility model.
Fig. 9 is along the sectional view of line A-A in Fig. 8.
Figure 10 is the structure diagram of the second connection sheet in the utility model.
Figure 11 is along the sectional view of line B-B in Figure 10.
In figure：10- lugs；20- poles；30- flexible links；1- housings；2- battery cores；The first lugs of 21-；The second poles of 22-
Ear；The first poles of 3-；The first matrix parts of 31-；The first trunk portions of 32-；The second poles of 4-；The second matrix parts of 41-；The second columns of 42-
Body portion；The first connection sheets of 5-；51- the first lug connecting portions；52- the first pole connecting portions；53- bends cambered surface；54- fuse part；
55- first through hole；The second connection sheets of 6-；61- the second lug connecting portions；62- the second pole connecting portions；The second through holes of 63-；7- is pushed up
Cover plate；71- liquid injection holes；72- relief valves；The safe roll-over valves of 73-；The first convex closures of 74-；The first convex closures of 75- resettlement section；76- second
Convex closure；The second convex closures of 77- resettlement section；The conductive matrixs of 81- first；The conductive matrixs of 82- second；91- insulated enclosure circles；101- is conductive
Piece；102- insulating trips；201- the first insulated plastic parts；202- the second insulated plastic parts.
Embodiment
With reference to embodiment and Figure of description, the utility model is described in further detail, but this
The embodiment not limited to this of utility model.
As shown in Fig. 2~11, a kind of power battery, including head cover, housing 1 and battery core 2, top seal are installed on housing 1
On, battery core 2 is placed in housing 1, and head cover is provided with the first pole 3 and the second pole 4, and head cover includes coping plate 7 and is arranged at
Relief valve 72, liquid injection hole 71 and the safe roll-over valve 73 of coping plate 7, the first pole 3 and coping plate 7 are electrically connected, the second pole 4
Insulate and assemble with coping plate 7, safe roll-over valve 73 and coping plate 7 are electrically connected；Battery core 2 is provided with the first lug 21 and the second pole
Ear 22, the first lug 21 are electrically connected by the first connection sheet 5 and the first pole 3, the second lug 22 by the second connection sheet 6 with
Second pole 4 is electrically connected, and the first connection sheet 5 includes the first lug connecting portion 51 and curved to side from the first lug connecting portion 51
The the first pole connecting portion 52 formed is rolled over, the first pole connecting portion 52 connects with the first lug connecting portion 51 by bending cambered surface 53
Connect, the first pole connecting portion 52 is being provided with fuse part 54 at bending cambered surface 53, and the first pole 3 is electrically connected at the first pole
Column connecting portion 52, the first lug 21 are electrically connected at the first lug connecting portion 51；Second connection sheet 6 includes the second lug connecting portion
61, one end of the second lug connecting portion 61 forms the second pole connecting portion 62 to side-facing depressions, and the second pole 4 is electrically connected at the
Two pole connecting portions 62, the second lug 22 are electrically connected at the second lug connecting portion 61；Wherein, the first connection sheet 5 and second connects
Contact pin 6 is integrally formed by aluminium flake or copper sheet.
Wherein, when the quantity of battery core 2 is single, the first lug 21 is electrically connected at the one of the first lug connecting portion 51
Side, the second lug 22 are electrically connected at the side of the second lug connecting portion 61；When the quantity of battery core 2 is multiple (two or more)
When, as shown in Fig. 5~7, multiple first lugs 21 are divided into two groups of both sides for being electrically connected at the first lug connecting portion 51, Duo Ge
Two lugs 22 are divided into two groups of both sides for being electrically connected at the second lug connecting portion 61.
As the preferred solution of the utility model, the first lug connecting portion 51 is provided with first through hole 55, and the second lug connects
Socket part 61 is provided with the second through hole 63, and first through hole 55 is oppositely arranged with liquid injection hole 71, the second through hole 63 and safe roll-over valve
73 are oppositely arranged.Wherein, first through hole 55 is set in the first lug connecting portion 51 primarily to corresponding to the fluid injection on coping plate 7
Hole 71, in order to carry out fluid injection to battery；And second through hole 63 is set in the second lug connecting portion 61, primarily to corresponding peace
The air hole of full roll-over valve 73, in order to the pressure release that can breathe freely in time during cell malfunctions, ensures the security performance of battery.
As the preferred solution of the utility model, the pore size of 55 and second through hole 63 of first through hole is 1~20mm,
Preferably 2~10mm.If first through hole 55 is excessive, the conveyance capacity of the first connection sheet 5 can be influenced；If first through hole 55 is too small,
The fluid injection speed of electrolyte can then be reduced；If the second through hole 63 is excessive, the conveyance capacity of the second connection sheet 6 can be influenced；If second
Through hole 63 is too small, then can influence battery and breathe freely relieving characteristics.
As the preferred solution of the utility model, fuse part 54 includes insurance hole and/or insurance chamber, and is coated on insurance
Insulation strengthening layer outside hole and/or insurance chamber；Wherein, insurance hole is blind hole or through hole, insurance chamber is spheroid chamber, cylinder body cavity or
Cube chamber；Insulation strengthening layer be made of insulating resin, insulating resin for epoxy resin, polyphenylene sulfide, polyformaldehyde, polyvinyl chloride,
At least one of polypropylene, polyester resin and polycarbonate；Above-mentioned resin is respectively provided with good intensity and insulation performance, is entirely capable of
Enough meet use demand.
When battery short circuit, whole circuit moment produces very big electric current, due to insurance hole and/or insurance cavity region overcurrent
Area is small, and resistance is big, high temperature fusing can occur first, so as to protect circuit.However, since the first connection sheet 5 generally uses copper
Piece or aluminium flake make, thus can reduce the mechanical strength in the region after connection sheet opens up insurance hole and/or insurance chamber, make first
Connection sheet 5 is easy to be broken at insurance hole and/or insurance chamber；Therefore, the utility model is by adding insulation strengthening layer,
On the one hand, the strengthening layer that insulate can play reinforcing and protective effect to the insurance hole and/or insurance cavity region of the first connection sheet 5；
On the other hand, when battery short circuit adstante febre, the insurance hole and/or insurance cavity region of the first connection sheet 5 can form striking point, fuse
Insulation strengthening layer at point is melted and is covered on the section at striking point, so as to thoroughly block circuit, avoids fusing position from having
Situation separated but still in each other's thoughts, thus further improves battery safety.Wherein, the fuse part 54 of the utility model preferably insures chamber
The structure of additional insulation strengthening layer, since this structure will not disconnect the side face of fuse part 54, electric current can pass through
The surrounding of insurance chamber disperses to circulate, and beneficial to being uniformly distributed for electric current, while it is larger that the first pole connecting portion 52 can also retained
Structural strength.
As the preferred solution of the utility model, the shape of the first connection sheet 5 is in " mountain " font.Wherein, " mountain " font
Both sides are electrically connected with the first lug 21, and the middle part of " mountain " font is then electrically connected with the first pole 3；The utility model is connected first
Piece 5 is arranged to " mountain " font, and the first connection sheet 5 can on the one hand realized reliably with the first pole 3 and the first lug 21 respectively
Connection；On the other hand, the conveyance capacity and fusing performance of the first connection sheet 5 can so be effectively ensured, while can also be fully
Match and using inside battery space, improve battery energy density.
As the preferred solution of the utility model, the first pole 3 include the first matrix part 31 and from the first matrix part 31 to
First trunk portion 32 of lower extension, the end sleeve of the first trunk portion 32 are equipped with the first conductive matrix 81, the first 81 He of conductive matrix
First pole 3 is electrically connected with the first connection sheet 5, and conductive sheet 101 is provided between the first matrix part 31 and coping plate 7, the
Insulated enclosure circle 91 is arranged between one trunk portion 32 and coping plate 7；Second pole 4 includes the second matrix part 41 and from the second base
The second trunk portion 42 that body portion 41 extends downwardly, the end sleeve of the second trunk portion 42 are equipped with the second conductive matrix 82, and second is conductive
82 and second pole 4 of matrix is electrically connected with the second connection sheet 6, and insulation is provided between the second matrix part 41 and coping plate 7
Piece 102, insulated enclosure circle 91 is arranged between the second trunk portion 42 and coping plate 7.Wherein, the utility model is by by the first pole
3 and second pole 4 of column sets T-shaped package assembly, can so effectively improve the conveyance capacity on pole surface.
As the preferred solution of the utility model, insulated enclosure circle 91 includes the first annular seal body, and from the first ring
Second annular seal body raised vertically on the axial end face of shape seal, and the internal diameter of the second annular seal body is more than first
The internal diameter of annular seal body, the radial section of insulated enclosure circle 91 is in "convex" shaped structure.By the way that insulated enclosure circle 91 is set
Sealed body structure in pairs, the problem of not only solving low existing power battery head cover sealing ring air-tightness, easy gas leakage, moreover it is possible to
Prevent it is bad caused by metal fillings, so as to improve the sealing effect of insulated enclosure circle 91.
As the preferred solution of the utility model, the end of the end of the first trunk portion 32 and the second trunk portion 42 is set respectively
It is equipped with the first riveting groove and the second riveting groove, the first conductive matrix 81 is sheathed on the first riveting groove and close with the first trunk portion 32
Connection, the second conductive matrix 82 are sheathed on the second riveting groove and are closely connected with the second trunk portion 42.
As the preferred solution of the utility model, coping plate 7 is provided with the first convex closure 74 and second for protruding from upper surface
Convex closure 76, the first convex closure 74 and the second convex closure 76 form the first convex closure resettlement section 75 and second in the lower surface of coping plate 7 respectively
Convex closure resettlement section 77；The first mounting hole is provided with first convex closure 74, the second mounting hole is provided with the second convex closure 76；First pole
Column 3 is electrically connected through the first mounting hole with the first connection sheet 5, and the second pole 4 is electric through the second mounting hole and the second connection sheet 6
Property connection.The first convex closure resettlement section of coping plate 7 can will be moved into during installation on the first conductive conductive matrix 82 of matrix 81 and second
75 and second in convex closure resettlement section 77, while power battery basic performance is ensured, reduce height of the pole inside housing 1
Degree, the installation space of bigger has been vacateed to battery core 2, has made battery structure compacter, so that the energy density of power battery obtains
To further lifting.
As the preferred solution of the utility model, set between the first conductive matrix 81, insulated enclosure circle 91 and coping plate 7
There is the first insulated plastic part 201, the second insulated plastic is provided between the second conductive matrix 82, insulated enclosure circle 91 and coping plate 7
Glue part 202；The first insulated plastic part 201 and the second insulated plastic part 202 is set to carry out effectively fixing to above-mentioned parts,
Strengthen the sealing effect between above-mentioned parts at the same time.
As the preferred solution of the utility model, the first pole 3 and the second pole 4 are aluminium pole, copper-base column or copper aluminium
Compound pole；The first conductive conductive matrix 82 of matrix 81 and second is aluminium block or copper billet.Preferably, the first conductive matrix 81 is
Aluminium block, the second conductive matrix 82 is copper billet；First pole 3 is aluminium pole, and the second pole 4 is Copper-Aluminum compound pole, wherein, to keep away
Exempt from copper and aluminium welding wiring stress and be broken, therefore copper and aluminium welding wiring is arranged between insulating trip 102 and insulated enclosure circle 91.
As the preferred solution of the utility model, the first conductive matrix 81 is by way of riveting and laser welding is combined
Closely it is connected with the first trunk portion 32, the second conductive matrix 82 is by way of riveting and laser welding is combined and the second cylinder
Portion 42 closely connects.The mode that riveting and laser welding are combined effectively increases the reliability that pole is connected with conductive matrix,
And compared to other welding manners, laser welding is efficiently, stable, uniformity is high, is fully able to meet welding requirements；It is preferred that
, laser welding is optical fiber lap welding or seam weld.
As the preferred solution of the utility model, the first positioning column is provided between 7 and first matrix part 31 of coping plate；Top
The second positioning column is provided between the conductive matrix 81 of cover plate 7 and first；The 3rd is provided between 7 and second matrix part 41 of coping plate
Positioning column；The 4th positioning column is provided between the conductive matrix 82 of coping plate 7 and second.Preferably, the first positioning column, the second positioning
The quantity of column, the 3rd positioning column and the 4th positioning column is disposed as at least two, sets positioning column to ensure good positioning
Effect, prevents from being shifted between parts in assembling process, in order to assemble.
According to the disclosure and teachings of the above specification, the utility model those skilled in the art can also be to above-mentioned reality
Apply mode make a change and modification.Therefore, the utility model is not limited to above-mentioned embodiment, every this area skill
It is new that art personnel any conspicuously improved, replacement or modification made on the basis of the utility model belong to this practicality
The protection domain of type.In addition, although used some specific terms in this specification, but these terms are intended merely to conveniently say
It is bright, any restrictions are not formed to the utility model.
Claims (10)
1. a kind of power battery, including head cover, battery core and housing, the top seal is installed on the housing, the battery core
It is placed in the housing, the head cover is provided with the first pole and the second pole, and the battery core is provided with the first lug and second
Lug, first lug are electrically connected by the first connection sheet and first pole, and second lug connects by second
Contact pin is electrically connected with second pole, it is characterised in that：First connection sheet includes the first lug connecting portion and by institute
State the first pole connecting portion that the first lug connecting portion is bent to form to side, the first pole connecting portion and first pole
Ear connecting portion is connected by bending cambered surface, and the first pole connecting portion is being provided with fuse part at bending cambered surface, described
First pole is electrically connected at the first pole connecting portion, and first lug is electrically connected at the first lug connection
Portion.
2. power battery according to claim 1, it is characterised in that：Second connection sheet is connected including the second lug
Portion, one end of the second lug connecting portion form the second pole connecting portion to side-facing depressions, and second pole is electrically connected
In the second pole connecting portion, second lug is electrically connected at the second lug connecting portion.
3. power battery according to claim 2, it is characterised in that：It is logical that the first lug connecting portion is provided with first
Hole, the second lug connecting portion are provided with the second through hole.
4. power battery according to claim 1, it is characterised in that：The fuse part includes insurance hole and/or insurance chamber,
And it is coated on the insulation strengthening layer outside the insurance hole and/or insurance chamber.
5. power battery according to claim 1, it is characterised in that：The shape of first connection sheet is in " mountain " font.
6. power battery according to claim 3, it is characterised in that：The head cover includes coping plate and is arranged at institute
The relief valve, liquid injection hole and safe roll-over valve of coping plate are stated, first pole and the coping plate are electrically connected, and described second
Pole and coping plate insulation assembling, the safe roll-over valve and the coping plate are electrically connected, the liquid injection hole with it is described
First through hole is oppositely arranged, and the safe roll-over valve is oppositely arranged with second through hole.
7. power battery according to claim 6, it is characterised in that：First pole includes the first matrix part and from the
The first trunk portion that one matrix part extends downwardly, the end sleeve of first trunk portion are equipped with the first conductive matrix, and described first
Conductive matrix and first pole are electrically connected with first connection sheet, first matrix part and the coping plate it
Between be provided with conductive sheet, be arranged with insulated enclosure circle between first trunk portion and the coping plate.
8. power battery according to claim 6, it is characterised in that：Second pole includes the second matrix part and from the
The second trunk portion that two matrix parts extend downwardly, the end sleeve of second trunk portion are equipped with the second conductive matrix, and described second
Conductive matrix and second pole are electrically connected with second connection sheet, second matrix part and the coping plate it
Between be provided with insulating trip, be arranged with insulated enclosure circle between second trunk portion and the coping plate.
9. the power battery according to claim 7 or 8, it is characterised in that：It is close that the insulated enclosure circle includes the first ring-type
Feng Ti, and raised vertically the second annular seal body from the axial end face of the first annular seal body, and described the
The internal diameter of two annular seal bodies is more than the internal diameter of the first annular seal body.
10. power battery according to claim 6, it is characterised in that：The coping plate, which is provided with, protrudes from upper surface
First convex closure and the second convex closure, first convex closure and second convex closure form the first convex closure in the lower surface of coping plate respectively
Resettlement section and the second convex closure resettlement section；The first mounting hole is provided with first convex closure, is provided with second convex closure
Two mounting holes；First pole is electrically connected through first mounting hole and first connection sheet, second pole
It is electrically connected through second mounting hole and second connection sheet.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720481233.7U CN207303210U (en) | 2017-05-03 | 2017-05-03 | A kind of power battery |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720481233.7U CN207303210U (en) | 2017-05-03 | 2017-05-03 | A kind of power battery |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207303210U true CN207303210U (en) | 2018-05-01 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201720481233.7U Active CN207303210U (en) | 2017-05-03 | 2017-05-03 | A kind of power battery |
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| Country | Link |
|---|---|
| CN (1) | CN207303210U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107017381A (en) * | 2017-05-03 | 2017-08-04 | 东莞塔菲尔新能源科技有限公司 | A kind of electrokinetic cell |
| CN110729421A (en) * | 2019-11-19 | 2020-01-24 | 凌帕新能源科技(上海)有限公司 | Battery cover plate assembly, battery cell assembling method and connecting sheet |
-
2017
- 2017-05-03 CN CN201720481233.7U patent/CN207303210U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107017381A (en) * | 2017-05-03 | 2017-08-04 | 东莞塔菲尔新能源科技有限公司 | A kind of electrokinetic cell |
| CN107017381B (en) * | 2017-05-03 | 2024-06-04 | 江苏正力新能电池技术有限公司 | Power battery |
| CN110729421A (en) * | 2019-11-19 | 2020-01-24 | 凌帕新能源科技(上海)有限公司 | Battery cover plate assembly, battery cell assembling method and connecting sheet |
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Effective date of registration: 20180531 Address after: 211100 69, Feitian Road, Jiangning Airport Economic Development Zone, Nanjing, Jiangsu Co-patentee after: DONGGUAN TAFEIER NEW ENERGY TECHNOLOGY CO., LTD. Patentee after: Jiangsu Tafel new energy Polytron Technologies Inc Co-patentee after: SHENZHEN TAFEL AMPEREX TECHNOLOGY CO., LTD. Address before: 523000 Dalang Town, Dongguan, Guangdong province Xiangshan Pine Hill Village Xiangshan Industrial Park Jiayuan Road No. 9 Co-patentee before: SHENZHEN TAFEL AMPEREX TECHNOLOGY CO., LTD. Patentee before: DONGGUAN TAFEIER NEW ENERGY TECHNOLOGY CO., LTD. |
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Effective date of registration: 20220124 Address after: 215500 room 808, No. 1, Southeast Avenue, Changshu high tech Industrial Development Zone, Changshu, Suzhou, Jiangsu Patentee after: Jiangsu Zhengli new energy battery technology Co.,Ltd. Address before: 211100 69, Feitian Road, Jiangning Airport Economic Development Zone, Nanjing, Jiangsu Patentee before: JIANGSU TAFEL NEW ENERGY TECHNOLOGY Co.,Ltd. Patentee before: DONGGUAN TAFEL NEW ENERGY TECHNOLOGY Co.,Ltd. Patentee before: SHENZHEN TAFEL NEW ENERGY TECHNOLOGY Co.,Ltd. |
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