CN205881985U - Polar plate type lithium battery cover plate - Google Patents

Abstract

The utility model provides a polar plate type lithium battery cover plate, belongs to lithium bettery member technical field. Including the apron body, pressure release explosion proof hole is established at its middle part, the explosion -proof mechanism of pressure release arranges the apron body in the one side back to lithium battery shell body, just, the negative plate is in left and right the serve side of location at the apron body, just, negative plate electrode lead tablet is located the left and right end below of apron body, has the insulating dottle pin of positive plate between positive plate and the apron body, negative plate and lap and have negative plate insulation dottle pin between the body, characteristics: negative plate electrode lead tablet reinforcement mechanism is established to the right -hand member below of apron body, negative plate electrode lead tablet and negative plate riveting, and positive plate electrode lead tablet reinforcement mechanism, positive plate electrode lead tablet and positive plate riveting are established to the left end below of apron body, a notes liquid hole to lithium battery shell body's shell intracavity introduction electrolyte that is used for of running through the thickness orientation of lap body is offered on the body to the apron. Ensure the reliability be connected with lithium battery cell, convenient shell intracavity to lithium battery shell body pours into electrolyte into.

Description

Polar plate type lithium battery cover plate

Technical field

This utility model belongs to lithium battery component technology field, is specifically related to a kind of polar plate type lithium battery cover plate.

Background technology

Aforesaid polar plate type lithium battery cover plate is for cover board for pole type lithium battery.As is known in the industry, lithium electricity Pond is by housing, the lithium cell core (being made up of the plural number piece positive and negative plate of barrier film dielectric separation) of the shell intracavity being located at housing and lid Plate forms.Owing to lithium battery has, capacity is big, lightweight, be on active service cycle length, energy density height, memory-less effect, self-discharge rate The strong point such as low and environmentally friendly, thus thought highly of by industry and be widely used in electric automobile, electric bicycle or even All kinds of hardware & tools, etc..

Lithium battery cover plate is a pith in the structural system of lithium battery and in disclosed Chinese patent literature In be no lack of and be seen in, slightly with enumerate such as CN203721782U(cover plate of power lithium), the riveting of CN203871392U(integration height Formula lithium battery cover plate), CN104466043A(cover board for pole type lithium battery and use the post type lithium electricity post of this cover plate) and CN105810857A(lithium battery cover assembly), etc..

Typical case's " polar plate type lithium battery cover plate " that such as CN202308090U the recommends and " post type of CN102339959A offer Lithium electricity post cover plate ", being technically characterized in that of these two patents: offer explosionproof hole at the middle part of the length direction of substrate, explosion-proof The position in hole arranges rupture pressure disc and is arranging cover sheet corresponding to the position above rupture pressure disc, rupture pressure disc and cover sheet it Between space be configured to pressure releasing chamber, when the pressure of the shell intracavity of lithium battery exceedes setting value, rupture pressure disc explosion and pressure release, to keep away Exempt from because the blast of lithium battery entirety causes accident.But these two patent formula at least exist and lead to fraud at following two: one, due to position Positive plate electrode leader below cover board body left end and the positive plate being positioned at above cover board body left end are by a pair rivet Realize electrical connection each other, equally, be positioned at negative plate electrode leader below cover board body right-hand member with to be positioned at cover board body right Negative plate above end realizes electrical connection each other by a pair rivet, thus the location of positive and negative electrode plate electrode leader is reliable Property is often difficult to ensure；Its two, due to the enclosed construction that Cover Plate Body Is is overall, thus electrolyte is injected in the shell chamber of housing and makes Become inconvenience.

For above-mentioned prior art, it is necessary to improved, make useful design for this applicant, will be detailed below being situated between The technical scheme continued produces under this background.

Summary of the invention

Task of the present utility model be to provide a kind of reliability of positioning contributing to improving positive and negative electrode plate electrode leader and Use the electrical connection effect between guarantee and lithium cell core and be conducive to when cover board body is held in housing to shell Intracavity uses the polar plate type lithium battery cover plate of the convenience embodying fluid injection according to injecting electrolyte.

Task of the present utility model is performed by, a kind of polar plate type lithium battery cover plate, including a cover board body, The middle part of the length direction of this cover board body offers a pressure-relief explosion-proof hole, and the thickness side of cover board body is run through in this pressure-relief explosion-proof hole To；One pressure-relief explosion-proof mechanism, this pressure-relief explosion-proof mechanism is arranged at cover board body in the position corresponding to described pressure-relief explosion-proof hole and exists Back to the side of lithium battery casing under use state；One positive plate and a negative plate, positive plate is between described cover board body Being positioned at above the left end of cover board body under the state keeping electric insulation, negative plate keeps electricity equally between cover board body It is positioned under the state of edge of drawing last breath above the right-hand member of cover board body；One positive plate electrode leader and a negative plate electrode leader, just Pad electrode leader is positioned at below the left end of cover board body, and this positive plate electrode leader is across cover board body and simultaneously and cover plate Riveting with described positive plate under the state keeping insulation between body, negative plate electrode leader is positioned under the right-hand member of cover board body Side, this negative plate electrode leader equally when across cover board body and when and keeping insulation between cover board body simultaneously with institute State negative plate riveting, wherein: the structure of described positive plate is identical with the structure of described negative plate and described positive plate electrode is drawn The structure of sheet is identical with the structure of described negative plate electrode leader, is combined with one between described positive plate and described cover board body For dottle pin that the positive plate forming electric insulation between positive plate and cover board body is insulated, and at described negative plate and described lid One it is combined with for the dottle pin that insulated by the negative plate forming electric insulation between negative plate and cover board body, feature between plate body Being below the right-hand member of described cover board body to be provided with a negative plate electrode leader reinforcing mechanism, described negative plate electrode draws Sheet riveted by negative plate electrode leader reinforcing mechanism and described negative plate and and negative plate between form electrically conducting relation, A structure it is provided with identical with the structure of described negative plate electrode leader reinforcing mechanism below the left end of described cover board body Positive plate electrode leader reinforcing mechanism, described positive plate electrode leader by positive plate electrode leader reinforcing mechanism with described just Pole plate riveting and and positive plate between formed electrically conducting relation；Described cover board body offers one and runs through cover board body Thickness direction for lithium battery casing shell intracavity introduce electrolyte liquid injection hole.

In a specific embodiment of the present utility model, on described cover board body and around described pressure-relief explosion-proof The circumferencial direction in hole is constituted a pressure-relief explosion-proof mechanism installation cavity, and described pressure-relief explosion-proof mechanism is corresponding to pressure-relief explosion-proof hole Fix with pressure-relief explosion-proof mechanism installation cavity under state.

In another specific embodiment of the present utility model, described pressure-relief explosion-proof mechanism includes a rupture pressure disc and Rupture pressure disc splash guard, the middle position of rupture pressure disc constitute have a rupture pressure disc pressure pocket, this rupture pressure disc pressure pocket be hemispherical also And just the chamber diapire of described pressure-relief explosion-proof hole, the position, edge of rupture pressure disc and described pressure-relief explosion-proof mechanism installation cavity is welded Gu, rupture pressure disc splash guard passes through trim ring and the pressure-relief explosion-proof mechanism installation cavity of its underpart with the state soared in the top of rupture pressure disc Chamber diapire solid welding, the surrounding at this rupture pressure disc splash guard offers steam vent with space state.

In another specific embodiment of the present utility model, described rupture pressure disc is the thickness aluminum at 0.3-0.5mm Paper tinsel；Described rupture pressure disc splash guard is made of aluminum.

In another specific embodiment of the present utility model, described positive plate insulation dottle pin injection is incorporated into described Between positive plate and cover board body, described negative plate insulation dottle pin injection is incorporated between described negative plate and cover board body.

Also having in a specific embodiment of the present utility model, described negative plate electrode leader reinforcing mechanism includes An one insulation bracket and negative plate leader reinforcement fixed plate, insulation bracket corresponding to below the right-hand member of described cover board body and every Cover board body corresponding with described negative plate, this insulation bracket towards under side constitute and have a negative plate leader reinforcement solid Determining plate chamber, negative plate leader reinforcement fixed plate is embedded at negative plate leader reinforcement fixed plate intracavity, described negative plate leader Rear end in position and the negative plate leader reinforcement fixed plate spot welding solid welding of the lower section corresponding to negative plate leader reinforcement fixed plate, and The front end of negative plate leader leans out negative plate leader reinforcement fixed plate and is configured to free end and for electrically connecting with lithium cell core Connect.

More and in a specific embodiment, described negative plate offers a pair negative plate of the present utility model Rivet clasp hole, offer on described negative plate insulation dottle pin and in the position corresponding to a pair negative plate rivet clasp hole a pair negative Electrode plate insulation dottle pin rivet clasp hole, on described cover board body and in the position corresponding to a pair negative plate insulation dottle pin rivet clasp hole Put and offer a pair cover board body rivet clasp hole, on described insulation bracket and corresponding to a pair cover board body rivet clasp hole Position offers a pair insulation bracket rivet clasp hole, in described negative plate leader reinforcement fixed plate and exhausted corresponding to a pair The position in edge bracket rivet clasp hole offers a pair reinforcement fixed plate rivet clasp hole, the rear end of described negative plate electrode leader and Position corresponding to a pair insulation bracket rivet clasp hole offers a pair negative plate electrode leader rivet clasp hole, by a pair rivet right Should be in a pair negative plate electrode leader rivet clasp hole, a pair reinforcement fixed plate rivet clasp hole, a pair insulation bracket rivet clasp hole, a pair cover plate The position in body rivet clasp hole, a pair negative plate insulation dottle pin rivet clasp hole and a pair negative plate rivet clasp hole by negative plate electrode leader, Negative plate leader reinforcement fixed plate, insulation bracket, cover board body, negative plate insulation dottle pin and negative plate rivet clasp are structure as a whole also And make negative plate electrode leader form electrically conducting relation with negative plate.

In an of the present utility model and then specific embodiment, described Cover Plate Body Is aluminium sheet.

Of the present utility model the most more and in a specific embodiment, described positive plate and positive plate electrode leader by Aluminum is made, and described negative plate and negative plate electrode leader are made of copper, and is formed between positive and negative pole plate by aluminum and copper Potential difference.

Of the present utility model again and then in a specific embodiment, described positive plate towards on side be provided with electricity Source positive pole labelling, described negative plate towards on side be provided with power cathode labelling.

The technical scheme that this utility model provides is owing to being additionally arranged negative plate electrode leader reinforcing mechanism and positive plate electricity Pole leader reinforcing mechanism, thus negative plate electrode leader and the reliability of positioning of positive plate electrode leader can be significantly improved, enter And guarantee the reliability of the electrical connection with lithium cell core；Owing to having offered liquid injection hole on cover board body, thus it is able to conveniently Ground injects electrolyte to the shell intracavity of lithium battery casing.

Accompanying drawing explanation

Fig. 1 is example structure figure of the present utility model.

Detailed description of the invention

Refer to Fig. 1, it is shown that the cover board body 1 of a rectangular body of geometry, at the length direction of this cover board body 1 Middle part offer a pressure-relief explosion-proof hole 11, the thickness direction of cover board body 1 is run through in this pressure-relief explosion-proof hole 11；Show a pressure release Anti-explosion mechanism 2, this pressure-relief explosion-proof mechanism 2 is arranged at cover board body 1 and is using in the position corresponding to aforementioned pressure-relief explosion-proof hole 11 Back to the side (i.e. location status shown in Fig. 1 is towards upper side) of lithium battery casing under state；Show a positive plate 3 and Negative plate 4, positive plate 3 keeps the left end being positioned at cover board body 1 when electric insulation between carrier board body 1 Top, negative plate 4 keeps being positioned on the right-hand member of cover board body 1 when electric insulation equally between cover board body 1 Side；Showing positive plate electrode leader 5 and a negative plate electrode leader 6, positive plate electrode leader 5 is positioned at cover board body 1 Below left end, this positive plate electrode leader 5 is across cover board body 1 and the state that and keeps insulation between cover board body 1 simultaneously Riveting with aforementioned positive electrode plate 3 down, negative plate electrode leader 6 is positioned at below the right-hand member of cover board body 1, this negative plate electrode leader 6 Rivet with aforementioned negative plate 4 when across cover board body 1 and simultaneously and keeping and insulating between cover board body 1 equally, its In: the structure of aforementioned positive electrode plate 3 is identical with the structure of aforementioned negative plate 4 and the structure of aforementioned positive electrode plate electrode leader 5 is with front The structure stating negative plate electrode leader 6 is identical.One it is combined with for will just between aforementioned positive electrode plate 3 and carrier board body 1 The positive plate insulation dottle pin 10 of electric insulation is formed between pole plate 3 and cover board body 1, and in aforementioned negative plate 4 and carrier board One it is combined with for the dottle pin 7 that insulated by the negative plate forming electric insulation between negative plate 4 and cover board body 1 between body 1.

Technical essential as the technical scheme that this utility model provides: arrange below the right-hand member of carrier board body 1 Having a negative plate electrode leader reinforcing mechanism 8, aforesaid negative plate electrode leader 6 is by negative plate electrode leader reinforcing mechanism 8 And aforementioned negative plate 4 rivets and and negative plate 4 between formed electrically conducting relation, below the left end of carrier board body 1 It is provided with the positive plate electrode leader reinforcing mechanism 9 that a structure is identical with the structure of aforementioned negative plate electrode leader reinforcing mechanism 8, Aforesaid positive plate electrode leader 5 is riveted and and positive plate by positive plate electrode leader reinforcing mechanism 9 and aforementioned positive electrode plate 3 Electrically conducting relation is formed between 3；Carrier board body 1 offers a thickness direction running through cover board body 1 for The liquid injection hole 12 of electrolyte is introduced to the shell intracavity of lithium battery casing.

As shown in Figure 1, on carrier board body 1 and around aforementioned pressure-relief explosion-proof hole 11 circumferencial direction constitute have one Pressure-relief explosion-proof mechanism installation cavity 13, aforesaid pressure-relief explosion-proof mechanism 2 prevents with pressure release when corresponding to pressure-relief explosion-proof hole 11 Quick-fried mechanism installation cavity 13 is fixed.

Aforesaid pressure-relief explosion-proof mechanism 2 includes rupture pressure disc 21 and a rupture pressure disc splash guard 22, in the central authorities of rupture pressure disc 21 Position is constituted a rupture pressure disc pressure pocket 211, and this rupture pressure disc pressure pocket 211 is in hemispherical and just to aforesaid pressure-relief explosion-proof hole 11, the position, edge of rupture pressure disc 21 and the chamber diapire solid welding of aforementioned pressure-relief explosion-proof mechanism installation cavity 13, rupture pressure disc splash guard 22 pass through at the bottom of the trim ring 221 of its underpart chamber with pressure-relief explosion-proof mechanism installation cavity 13 with the state soared in the top of rupture pressure disc 21 Wall solid welding, the surrounding at this rupture pressure disc splash guard 22 offers steam vent 222 with space state.

Once exceeding setting value once the pressure in lithium battery case body, under pressure, valve film 21 is broken (the most quick-fried Split), the pressed gas in aluminum cell housing is let out to the external world, and the rupture pressure disc 21 burst is stopped by rupture pressure disc splash guard 22, it is to avoid Adjacent lithium battery is caused secondary to endanger, as caused short circuit by the rupture pressure disc 21 splashed.

Prior vent film 21 is preferably the aluminium foil of 0.3-0.5mm for thickness, with specific reference to the lithium battery casing of different size Bearing capacity change thickness；Aforesaid rupture pressure disc splash guard 22 is made of aluminum.

In the present embodiment, the injection of aforesaid positive plate insulation dottle pin 10 be incorporated into aforementioned positive electrode plate 3 and cover board body 1 it Between, insulation dottle pin 7 injection of aforesaid negative plate is incorporated between aforementioned negative plate 4 and cover board body 1.

Please continue to refer to Fig. 1, aforesaid negative plate electrode leader reinforcing mechanism 8 includes that an insulation bracket 81 and a negative plate draw Sheet reinforcement fixed plate 82, insulation bracket 81 corresponds to below the right-hand member of carrier board body 1 and across cover board body 1 with aforementioned Negative plate 4 corresponding, this insulation bracket 81 towards under side constitute and have a negative plate leader reinforcement fixed plate chamber 813, negative Pole plate leader reinforcement fixed plate 82 is embedded in negative plate leader reinforcement fixed plate chamber 813, the rear end of aforesaid negative plate leader 6 In position and the negative plate leader reinforcement fixed plate 82 spot welding solid welding of the lower section corresponding to negative plate leader reinforcement fixed plate 82, and The front end of negative plate leader 6 leans out negative plate leader reinforcement fixed plate 82 and is configured to free end and for (in a state of use) It is electrically connected with lithium cell core.

As shown in Figure 1, aforesaid negative plate 4 offers a pair negative plate rivet clasp hole 41, exhausted at aforesaid negative plate A pair negative plate insulation dottle pin rivet clasp hole is offered on edge dottle pin 7 and in the position corresponding to a pair negative plate rivet clasp hole 41 71, on aforesaid cover board body 1 and in the position corresponding to a pair negative plate insulation dottle pin rivet clasp hole 71, offer a pair Cover board body rivet clasp hole 14, opens on aforesaid insulation bracket 81 and in the position corresponding to a pair cover board body rivet clasp hole 14 It is provided with a pair insulation bracket rivet clasp hole 811, in aforesaid negative plate leader reinforcement fixed plate 82 and exhausted corresponding to a pair The position in edge bracket rivet clasp hole 811 offers a pair reinforcement fixed plate rivet clasp hole 821, after aforementioned negative plate electrode leader 6 Hold and offer a pair negative plate electrode leader rivet clasp hole 61, mat in the position corresponding to a pair insulation bracket rivet clasp hole 811 By a pair rivet 10 corresponding to a pair negative plate electrode leader rivet clasp hole 61, a pair reinforcement fixed plate rivet clasp hole 821, a pair exhausted Edge bracket rivet clasp hole 811, a pair cover board body rivet clasp hole 14, a pair negative plate insulation dottle pin rivet clasp hole 71 and a pair negative plate riveting Gu the position in hole 41 is by negative plate electrode leader 6, negative plate leader reinforcement fixed plate 82, insulation bracket 81, cover board body 1, negative Electrode plate insulation dottle pin 7 and negative plate 4 rivet clasp are structure as a whole and make negative plate electrode leader 6 be formed with negative plate 4 and electrically lead Clearance system.

Due to applicant have already described above bright: the structure of positive plate electrode leader reinforcing mechanism 9 and negative plate electrode leader The structure of reinforcing mechanism 8 is identical, thus applicant is no longer aligned with pad electrode leader reinforcing mechanism 9 and repeats.

Preferably, before the left end of the insulation bracket 81 of the structural system of aforementioned negative plate electrode leader reinforcing mechanism 8 The each composition of rear side has a pivot ear 812, offers a hub setting axis hole 8121, by the hub setting axle not shown in figure on pivot ear 812 Will insulation bracket 81 and lithium battery casing pivot joint in the position corresponding to hub setting axis hole 8121.

In the present embodiment, aforesaid cover board body 1 is aluminium sheet, and aforesaid positive plate 3 and positive plate electrode leader 5 are by aluminum Making, aforesaid negative plate 4 and negative plate electrode leader 6 are made of copper, and make positive and negative with copper by aluminum under "on" position Potential difference is formed between pole plate 3,4.

Preferably, aforementioned positive electrode plate 3 towards on side be provided with positive source labelling 31, aforementioned negative plate 4 towards On side be provided with power cathode labelling 42.

In sum, the technical scheme that this utility model provides overcomes the deficiency in prior art, completes satisfactorily Invention task, has cashed the technique effect described in applicant's superincumbent technique effect hurdle faithfully.

Claims (10)

1. a polar plate type lithium battery cover plate, including a cover board body (1), at the middle part of the length direction of this cover board body (1) Offering a pressure-relief explosion-proof hole (11), the thickness direction of cover board body (1) is run through in this pressure-relief explosion-proof hole (11)；One pressure-relief explosion-proof machine Structure (2), this pressure-relief explosion-proof mechanism (2) is arranged at cover board body (1) in the position corresponding to described pressure-relief explosion-proof hole (11) and makes With side back to lithium battery casing under state；One positive plate (3) and a negative plate (4), positive plate (3) is with described cover plate originally Be positioned at above the left end of cover board body (1) under the state keeping electric insulation between body (1), negative plate (4) equally with lid It is positioned under the state keeping electric insulation between plate body (1) above the right-hand member of cover board body (1)；One positive plate electrode leader (5) and one negative plate electrode leader (6), positive plate electrode leader (5) is positioned at below the left end of cover board body (1), this positive plate Electrode leader (5) when across cover board body (1) and when and keeping insulation between cover board body (1) simultaneously with described positive pole Plate (3) rivets, and negative plate electrode leader (6) is positioned at below the right-hand member of cover board body (1), and this negative plate electrode leader (6) is same Riveting across cover board body (1) and when and keeping insulation between cover board body (1) simultaneously with described negative plate (4), Wherein: the structure of described positive plate (3) is identical with the structure of described negative plate (4) and described positive plate electrode leader (5) Structure is identical with the structure of described negative plate electrode leader (6), ties between described positive plate (3) and described cover board body (1) Conjunction has one for forming positive plate insulation dottle pin (10) of electric insulation between positive plate (3) and cover board body (1), and in institute State and be combined with one between negative plate (4) and described cover board body (1) for being formed between negative plate (4) and cover board body (1) Negative plate insulation dottle pin (7) of electric insulation, it is characterised in that be provided with a negative pole below the right-hand member of described cover board body (1) Plate electrode leader reinforcing mechanism (8), described negative plate electrode leader (6) by negative plate electrode leader reinforcing mechanism (8) with Described negative plate (4) riveting and and negative plate (4) between formed electrically conducting relation, at the left end of described cover board body (1) Lower section is provided with the positive plate electrode leader reinforcement that a structure is identical with the structure of described negative plate electrode leader reinforcing mechanism (8) Mechanism (9), described positive plate electrode leader (5) is by positive plate electrode leader reinforcing mechanism (9) and described positive plate (3) riveting Connect and and positive plate (3) between formed electrically conducting relation；Described cover board body (1) offers one and runs through cover board body (1) liquid injection hole (12) for introducing electrolyte to the shell intracavity of lithium battery casing of thickness direction.

Polar plate type lithium battery cover plate the most according to claim 1, it is characterised in that above and enclose at described cover board body (1) Circumferencial direction around described pressure-relief explosion-proof hole (11) is constituted pressure-relief explosion-proof mechanism installation cavity (13), described pressure-relief explosion-proof machine Structure (2) is fixed with pressure-relief explosion-proof mechanism installation cavity (13) when corresponding to pressure-relief explosion-proof hole (11).

Polar plate type lithium battery cover plate the most according to claim 2, it is characterised in that described pressure-relief explosion-proof mechanism (2) includes One rupture pressure disc (21) and a rupture pressure disc splash guard (22), constitute in the middle position of rupture pressure disc (21) and have a rupture pressure disc pressure pocket (211), this rupture pressure disc pressure pocket (211) is in hemispherical and just to described pressure-relief explosion-proof hole (11), the four of rupture pressure disc (21) Circumferential edges position and the chamber diapire solid welding of described pressure-relief explosion-proof mechanism installation cavity (13), rupture pressure disc splash guard (22) is to soar in anti- The state of the top of quick-fried film (21) is welded by the chamber diapire of the trim ring (221) of its underpart with pressure-relief explosion-proof mechanism installation cavity (13) Gu, the surrounding at this rupture pressure disc splash guard (22) offers steam vent (222) with space state.

Polar plate type lithium battery cover plate the most according to claim 3, it is characterised in that described rupture pressure disc (21) is that thickness exists The aluminium foil of 0.3-0.5mm；Described rupture pressure disc splash guard (22) is made of aluminum.

Polar plate type lithium battery cover plate the most according to claim 1, it is characterised in that described positive plate insulation dottle pin (10) Injection is incorporated between described positive plate (3) and cover board body (1), and described negative plate insulation dottle pin (7) injection is incorporated into institute State between negative plate (4) and cover board body (1).

Polar plate type lithium battery cover plate the most according to claim 1, it is characterised in that described negative plate electrode leader reinforcement Mechanism (8) includes an insulation bracket (81) and negative plate leader reinforcement fixed plate (82), and insulation bracket (81) is corresponding to described Below the right-hand member of cover board body (1) and corresponding with described negative plate (4) across cover board body (1), this insulation bracket (81) towards under side constitute have negative plate leader reinforcement fixed plate chamber (813), negative plate leader reinforcement fixed plate (82) Being embedded in negative plate leader reinforcement fixed plate chamber (813), the rear end of described negative plate leader (6) is being drawn corresponding to negative plate The position of the lower section of sheet reinforcement fixed plate (82) and negative plate leader reinforcement fixed plate (82) spot welding solid welding, and negative plate leader (6) front end leans out negative plate leader reinforcement fixed plate (82) and is configured to free end and for being electrically connected with lithium cell core.

Polar plate type lithium battery cover plate the most according to claim 6, it is characterised in that offer on described negative plate (4) A pair negative plate rivet clasp hole (41), on described negative plate insulation dottle pin (7) and corresponding to a pair negative plate rivet clasp hole (41) position offers a pair negative plate insulation dottle pin rivet clasp hole (71), on described cover board body (1) and in correspondence A pair cover board body rivet clasp hole (14) is offered, in described insulation in the position of a pair negative plate insulation dottle pin rivet clasp hole (71) Bracket (81) is upper and offers a pair insulation bracket rivet clasp hole in the position corresponding to a pair cover board body rivet clasp hole (14) (811), on described negative plate leader reinforcement fixed plate (82) and corresponding to a pair insulation bracket rivet clasp hole (811) Position offers a pair reinforcement fixed plate rivet clasp hole (821), in the rear end of described negative plate electrode leader (6) and corresponding to The position of a pair insulation bracket rivet clasp hole (811) offers a pair negative plate electrode leader rivet clasp hole (61), by a pair rivet (10) corresponding to a pair negative plate electrode leader rivet clasp hole (61), a pair reinforcement fixed plate rivet clasp hole (821), a pair insulated holding Seat rivet clasp hole (811), a pair cover board body rivet clasp hole (14), a pair negative plate insulation dottle pin rivet clasp hole (71) and a pair negative plate The position in rivet clasp hole (41) is by negative plate electrode leader (6), negative plate leader reinforcement fixed plate (82), insulation bracket (81), lid Plate body (1), negative plate insulation dottle pin (7) and negative plate (4) rivet clasp be structure as a whole and make negative plate electrode leader (6) and Negative plate (4) forms electrically conducting relation.

8. according to the polar plate type lithium battery cover plate described in claim 1 to 2 or 5 to 7 any claim, it is characterised in that described Cover board body (1) be aluminium sheet.

Polar plate type lithium battery cover plate the most according to claim 1, it is characterised in that described positive plate (3) and positive plate electricity Pole leader (5) is made of aluminum, and described negative plate (4) and negative plate electrode leader (6) are made of copper, by aluminum and copper Potential difference is formed between positive and negative pole plate (3,4).

Polar plate type lithium battery cover plate the most according to claim 9, it is characterised in that at described positive plate (3) towards upper Side is provided with positive source labelling (31), is provided with power cathode labelling (42) towards upper side at described negative plate (4).