CN212011038U - Battery cover plate structure for integrally injection molding of pole column - Google Patents
Battery cover plate structure for integrally injection molding of pole column Download PDFInfo
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- CN212011038U CN212011038U CN202020394692.3U CN202020394692U CN212011038U CN 212011038 U CN212011038 U CN 212011038U CN 202020394692 U CN202020394692 U CN 202020394692U CN 212011038 U CN212011038 U CN 212011038U
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02E60/10—Energy storage using batteries
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Abstract
The utility model discloses a battery cover plate structure for integral injection molding of a pole, which comprises a battery light plate; the left end and the right end of the battery light plate are respectively provided with an anode mounting groove and a cathode mounting groove; a positive sealing ring and a positive pole post are arranged in the positive mounting groove; the positive pole column is positioned at the top of the positive sealing ring; a cathode sealing ring and the right end of the cathode pole are arranged in the cathode mounting groove; the right end of the negative pole post is positioned at the top of the negative sealing ring; the left end of the cathode pole is placed in the cathode positioning sheet; the negative electrode positioning sheet is fixedly connected with the top surface of the battery light plate; the outer wall of the convex ring at the top of the anode mounting groove is provided with an anode external insulation ring in an injection molding mode; the outer wall of the top bulge loop of negative pole mounting groove and the outer wall of negative pole spacer install the negative pole outer insulating ring through the mode of moulding plastics. The utility model discloses structural design science can effectively reduce the volume of the battery apron of battery and account for the ratio, saves valuable installation space under the working property's of guaranteeing the battery apron prerequisite.
Description
Technical Field
The utility model relates to a battery manufacturing technology field especially relates to a battery cover plate structure that whole moulding plastics of utmost point post.
Background
The lithium ion battery has the advantages of safety, high efficiency, no pollution, high specific energy, abundant raw materials, more recycling times, long storage time and the like, so that the lithium ion battery is not only widely applied to portable electronic equipment, but also widely applied to large and medium-sized electric equipment such as electric automobiles, electric bicycles, electric tools and the like, and the performance requirement of the lithium ion battery is higher and higher.
At present, China is developing electric vehicles using lithium ion batteries comprehensively. However, the energy ratio of the lithium ion battery is too low, which directly affects the driving range of the electric vehicle, so that the method of reducing the volume ratio of structural parts (such as a battery cover plate) is the most effective and direct method to improve the use effect of the electric vehicle and the capacity of the battery.
In addition, the price of battery electricity core is higher, can make electric automobile's price remain high, so the manufacturing cost of the structure spare part that reduces also can reduce the cost of battery to a certain extent to make electric automobile reduce price, let the common people can accept the purchase more easily.
Therefore, there is an urgent need to develop a technology that can effectively reduce the volume ratio of the battery cover plate of the battery and save the precious installation space on the premise of ensuring the working performance of the battery cover plate.
SUMMERY OF THE UTILITY MODEL
The utility model aims at providing a battery cover plate structure that utmost point post was wholly moulded plastics to the technical defect that prior art exists.
Therefore, the utility model provides a battery cover plate structure for integrally injection molding of a pole, which comprises a battery light plate;
the left end and the right end of the battery light plate are respectively provided with an anode mounting groove and a cathode mounting groove;
a positive sealing ring and a positive pole post are arranged in the positive mounting groove;
the positive pole column is positioned at the top of the positive sealing ring and is in contact with the inner side wall of the positive mounting groove;
a cathode sealing ring and the right end of the cathode pole are arranged in the cathode mounting groove;
the right end of the negative pole post is positioned at the top of the negative pole sealing ring and is not contacted with the inner side wall of the negative pole mounting groove; the left end of the cathode pole is placed in the cathode positioning sheet;
the negative electrode positioning sheet is fixedly connected with the top surface of the battery light plate;
the outer wall of the convex ring at the top of the anode mounting groove is provided with an anode external insulation ring in an injection molding mode;
the bottom surface of the anode external insulation ring is tightly contacted with the top surface of the battery light plate;
the outer wall of the convex ring at the top of the negative electrode mounting groove and the outer wall of the negative electrode positioning sheet are provided with a negative electrode outer insulating ring in an injection molding mode;
the bottom surface of the cathode external insulation ring is tightly contacted with the top surface of the battery light plate.
The left edge of the negative pole mounting groove is provided with a reserved notch for placing the middle part of the negative pole in an embedded mode;
the bottom surfaces of the left end and the right end of the cathode pole are positioned on the same horizontal plane.
Wherein, the negative pole locating plate is the locating plate of upper end opening. The battery light plate is provided with a pressure overturning film mounting groove on the left side of the cathode mounting groove;
and a pressure overturning film is welded in the pressure overturning film mounting groove by laser.
The pressure overturning film is positioned right below the negative electrode positioning sheet and right below the left end of the negative electrode pole.
Wherein, the bottom surface of the battery light plate is fixedly connected with an upper gasket;
the left end and the right end of the upper gasket are respectively provided with a first through hole and a second through hole;
the first through hole is positioned right below the anode mounting groove;
and the second through hole is positioned right below the negative pole mounting groove.
Wherein, the lower parts of the left and right ends of the upper gasket are respectively provided with a positive connecting sheet and a negative connecting sheet;
the left end of the top of the positive connecting sheet is provided with a positive connecting bulge;
the positive electrode connecting bulge is inserted into the first through hole in a penetrating manner and then welded with the bottom surface of the positive electrode pole (specifically, ultrasonic welding);
the right end of the top of the negative connecting sheet is provided with a negative connecting bulge;
the negative pole connecting bulge is welded with the bottom surface of the right end of the negative pole post after penetrating and inserting into the second through hole.
The right end of the top of the positive connecting sheet is a positive pole lug connecting part which is used for being welded with a positive pole lug of an external battery pole group;
the left end of the top of the negative electrode connecting sheet is a negative electrode tab connecting part which is used for being welded with a negative electrode tab of an external battery electrode group;
the transverse middle position of the positive connecting sheet is provided with a positive fusing protection injection molding rubber block;
a section of fusing strip which is easy to conduct electricity is wrapped in the positive fusing protection injection molding rubber block;
the fusing bar is positioned between the left end and the right end of the positive connecting sheet and is used as a link for current transmission between the left end and the right end of the positive connecting sheet.
By above the utility model provides a technical scheme is visible, compares with prior art, the utility model provides a battery cover plate structure that utmost point post was wholly moulded plastics, its structural design science can be under the working property's of guaranteeing the battery cover plate prerequisite, and the volume that effectively reduces the battery cover plate of battery accounts for than, saves valuable installation space, has the production practice meaning of great importance.
Furthermore, the utility model provides a battery cover plate structure that utmost point post was whole to be moulded plastics has simplified the preparation flow of battery apron, is favorable to reducing the manufacturing cost of apron, further promotes electric automobile's popularization.
Drawings
Fig. 1 is a schematic view of an overall structure of a battery cover plate structure for integrally injection molding a post according to the present invention;
fig. 2 is a schematic three-dimensional exploded structural view of a battery cover plate structure for integrally injection molding a post according to the present invention;
in the figure: 1 is a battery light plate, 2 is an anode pole, 3 is a cathode pole, 4 is an anode external insulation ring, and 5 is a cathode external insulation ring;
6 is an anode sealing ring, 7 is a cathode sealing ring, 8 is a cathode positioning sheet, 9 is an anode fusing protection injection molding rubber block, and 10 is an upper gasket;
11 is a pressure reversal film, 12 is a positive electrode connecting sheet, and 13 is a negative electrode connecting sheet.
Detailed Description
In order to make the technical field of the present invention better understand, the present invention is further described in detail with reference to the accompanying drawings and embodiments.
Referring to fig. 1 and 2, the utility model provides a battery cover plate structure that utmost point post was wholly moulded plastics, its structure mainly is applicable to among the battery of aluminium system shell, the power battery of specially adapted high energy wall.
The utility model provides a battery cover plate structure for integral injection molding of a pole, which comprises a battery light plate 1;
the left end and the right end of the battery light plate 1 are respectively provided with an anode mounting groove 100 and a cathode mounting groove 200;
the positive pole mounting groove 100 is internally provided with a positive pole sealing ring 6 and a positive pole post 2;
the anode pole 2 is positioned at the top of the anode sealing ring 6 and is in contact with the inner side wall of the anode mounting groove 100;
the cathode mounting groove 200 is internally provided with a cathode sealing ring 7 and the right end of the cathode pole 3;
the right end of the cathode pole 3 is positioned at the top of the cathode sealing ring 7 and is not contacted with the inner side wall of the cathode mounting groove 200;
the negative electrode post 3 is not in contact with the battery light plate 1, and the seal ring is in contact with the battery light plate 1.
The left end of the cathode pole 3 is placed in the cathode positioning plate 8;
the negative electrode positioning sheet 8 is fixedly connected with the top surface of the battery light plate 1;
the outer wall of the convex ring at the top of the anode mounting groove 100 is provided with an anode outer insulating ring 4 in an injection molding mode;
the bottom surface of the anode external insulation ring 4 is tightly contacted with the top surface of the battery light plate 1;
the outer wall of the convex ring at the top of the negative electrode mounting groove 200 and the outer wall of the negative electrode positioning piece 8 are provided with a negative electrode outer insulating ring 5 in an injection molding mode;
the bottom surface of the cathode external insulation ring 5 is tightly contacted with the top surface of the battery light plate 1.
The utility model discloses in, on specifically realizing, the left side edge of negative pole mounting groove 200 has the opening 2001 of reserving for embedded middle part of placing negative pole post 3, thereby let negative pole post 3 about both ends bottom surface, can be located same horizontal plane.
In the present invention, the negative electrode spacer 8 is an upper end open spacer.
In the present invention, in a concrete implementation, the battery light plate 1 is provided with a pressure turning film mounting groove 300 on the left side of the cathode mounting groove 200;
the pressure inversion film 11 is laser welded in the pressure inversion film mounting groove 300.
In particular, the pressure turning film 11 is located right below the negative electrode positioning plate 8 and right below the left end of the negative electrode post 3.
In the present invention, in the concrete implementation, the bottom surface of the battery light board 1 is fixedly connected (for example, by welding or clamping or the like) with an upper gasket 10.
In the concrete implementation, the left end and the right end of the upper gasket 10 are respectively provided with a first through hole 101 and a second through hole 102;
a first through hole 101 located right below the positive electrode mounting groove 100;
and a second through hole 102 positioned right below the negative electrode mounting groove 200.
In the concrete implementation, a positive connecting sheet 12 and a negative connecting sheet 13 are respectively arranged below the left end and the right end of the upper gasket 10;
the top left end of the positive connecting piece 12 is provided with a positive connecting bulge 122;
the positive electrode connecting protrusion 122 is inserted into the first through hole 101, and then welded (specifically, ultrasonically welded) to the bottom surface of the positive electrode post 2;
the top right end of the negative connecting sheet 13 is provided with a negative connecting bulge 132;
the negative electrode connecting protrusion 132 is inserted through the second through hole 102 and then welded (specifically, ultrasonically welded) to the bottom surface of the right end of the negative electrode post 3.
In a concrete implementation, the right end of the top of the positive connecting sheet 12 is a positive tab connecting part 121, which is used for welding (specifically, ultrasonic welding) with a positive tab of an external battery pole group;
the left end of the top of the negative electrode connecting sheet 13 is a negative electrode tab connecting portion 131 for welding (specifically, ultrasonic welding) with a negative electrode tab of an external battery electrode group.
In the concrete implementation, a positive electrode fusing protection injection molding rubber block 9 is arranged at the transverse middle position of the positive electrode connecting sheet 12;
a section of fusing strip which is easy to conduct electricity is wrapped in the positive fusing protection injection molding rubber block 9;
the fuse strip is located between the left end and the right end of the positive connection piece 12, and separates the left end and the right end of the positive connection piece 12, and at the same time, the fuse strip is used as a link for current transmission between the left end and the right end of the positive connection piece 12 (namely, the positive electrode tab connection part 121).
It should be noted that, under the normal operating condition, the battery cover plate structure of the present invention is electrically connected to the positive electrode tab of the external battery electrode assembly through the positive electrode connecting piece 12 (specifically, the positive electrode tab connecting portion 121). When the fusing strip in the positive fusing protection injection molding rubber block 9 meets the condition that a large current passes through, the fusing strip will automatically fuse, so that the left end and the right end of the positive connecting piece 12 are disconnected, and further the positive pole tab connecting part 121 at the right end of the positive connecting piece 12 is no longer in conductive connection with the positive pole tab of the external battery pole group.
In the concrete realization, anodal fusing protection is moulded plastics and is glued piece 9 and be used for the parcel fuse strip, plays the fixed action to the fuse strip, the fuse strip can be the fuse strip that the aluminium material was made.
It should be noted that, to the utility model discloses, the battery apron is mostly made by the aluminium metal, and battery worn-out fur 1, anodal utmost point post 2, pressure upset membrane 11, anodal connection piece 12 are pure aluminium material, and the benefit of using the aluminum product is light in weight, corrosion resistance is good, and processing cost is low, and the yield is high.
The utility model discloses in, negative terminal 3 is copper aluminium combined material, and the outside is aluminium, and inside is copper, has both guaranteed the electric potential of the copper of inside negative pole like this, has guaranteed external utmost point post again and has used the aluminum product, makes things convenient for the equipment (PACK) in later stage.
In the utility model, the positive sealing ring and the negative sealing ring are made of fluororubber;
the positive electrode outer insulating ring, the negative electrode outer insulating ring, the fusing protection injection molding rubber block and the negative electrode positioning plate are made of PPS (polyphenylene sulfide).
The positive electrode outer insulating ring is made of conductive PPS (polyphenylene sulfide).
The utility model discloses in, the material of negative pole connection piece 13 is pure copper material, goes up gasket 10 and is PP material (polypropylene material).
It should be noted that, to the utility model discloses, utilize the structure of battery worn-out fur 1 and spacer integral type, replace current riveting formula apron, the manufacturing cost of reduction apron that can be very big to reduce the apron size, reduce the proportion that the utmost point group of electric core accounts for electric core total volume. And an overcharge short-circuit safety device can also be added on the cover plate, thereby playing a role in better protecting the battery cell.
The utility model discloses an application range of this technology is the lithium ion battery core of coiling and lamination formula utmost point group, and the electric current is that utmost point group directly derives through utmost point post, uses external electrical apparatus. The post is directly fixed through the cover plate, and the connecting sheet can be directly positioned on the cover plate and subjected to laser welding.
In order to understand the technical solution of the present invention more clearly, the following describes the specific assembling and manufacturing process of the present invention.
Firstly, manufacturing a battery light plate 1 and a pressure overturning film 11 by using a die, and performing laser welding on the battery light plate 1 and the pressure overturning film;
then, the anode pole 2, the anode sealing ring 6, the cathode pole 3 and the cathode sealing ring 7 are respectively placed in the anode groove and the cathode groove (namely the anode mounting groove 100 and the cathode mounting groove 200) of the battery light plate 1, and the cathode positioning piece 8 and the cathode pole 3 are fixed and placed in the reserved position of the battery light plate 1;
then, the metal bending of the groove edge is carried out on the positive and negative electrode grooves (namely the positive electrode mounting groove 100 and the negative electrode mounting groove 200) of the battery light plate 1, the positive electrode post 2 and the negative electrode post 3 are fixed and are integrally placed into an injection molding machine, the positive electrode external insulating ring 4 and the negative electrode external insulating ring 5 are injection molded on the battery light plate 1, thereby basically completing the battery cover plate,
finally, the upper gasket 10 which is molded in advance is fixed on the battery cover plate in various fixing modes, and can be fixed through welding or clamping.
In the concrete implementation, the battery is manufactured by respectively carrying out ultrasonic welding on a positive electrode tab and a positive electrode connecting sheet 12 and a negative electrode tab and a negative electrode connecting sheet 13 of an external battery electrode group, respectively placing convex parts (namely a positive electrode connecting bulge 122 and a negative electrode connecting bulge 132) of the positive electrode connecting sheet 12 and the negative electrode connecting sheet 13 into concave parts of a battery cover plate for positioning after welding, and then carrying out laser welding. And subsequently finishing the subsequent processes of the battery cell such as shell entering and the like. The manufacturing process of the battery can be completed.
Based on the technical scheme, the utility model discloses a technical structure design can unite two into one the upper and lower polar plate of battery apron ingeniously, has impeld a new level with the design of battery apron, has greatly saved the space to simplify the preparation flow of apron, reduced manufacturing cost.
It should be noted that the utility model discloses can satisfy the great battery of capacity, if adopt current utmost point post and outer polar plate riveted mode, then the battery apron will occupy very big space, leads to space utilization relatively lower, and the energy ratio of electricity core is lower. And if the battery apron adopts current riveted mode, the internal resistance will be greater than the whole battery apron of moulding plastics, because the utility model discloses a whole utmost point post of moulding plastics the apron be a complete metal block, and the effective area that overflows is greater than riveting formula battery apron, thereby leads to using the technical scheme of the utility model afterwards, the internal resistance of battery is less than the electric core of riveting formula apron preparation to showing the multiplying power performance that has improved electric core.
The technical scheme of the utility model, the scope that can use is wider, as long as the utmost point ear of utmost point group all can use at the battery of utmost point group homonymy, and not because the structure change of apron, the preparation flow that leads to electric core changes to because electric core capacity pressure ratio is little than the riveting formula, so the design space of utmost point group is bigger, and is simpler.
Compared with the prior art, the utility model provides a lithium ion battery goes up gasket has following beneficial effect:
1. the battery cover plate occupies a small size of the battery core;
2. the weight of the battery cover plate is low;
3. the whole manufacturing cost is low.
To sum up, compare with prior art, the utility model provides a pair of whole battery cover plate structure of moulding plastics of utmost point post, its structural design science can effectively reduce the volume of the battery apron of battery and account for ratio under the working property's of guaranteeing the battery apron prerequisite, saves valuable installation space, has the significance of great production practice.
Furthermore, the utility model provides a battery cover plate structure that utmost point post was whole to be moulded plastics has simplified the preparation flow of battery apron, is favorable to reducing the manufacturing cost of apron, further promotes electric automobile's popularization.
The foregoing is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, a plurality of modifications and decorations can be made without departing from the principle of the present invention, and these modifications and decorations should also be regarded as the protection scope of the present invention.
Claims (8)
1. A battery cover plate structure for integrally injection molding a pole is characterized by comprising a battery light plate (1);
the left end and the right end of the battery light plate (1) are respectively provided with an anode mounting groove (100) and a cathode mounting groove (200);
an anode sealing ring (6) and an anode pole column (2) are arranged in the anode mounting groove (100);
the positive pole column (2) is positioned at the top of the positive sealing ring (6) and is in contact with the inner side wall of the positive mounting groove (100);
the right ends of the negative sealing ring (7) and the negative pole post (3) are arranged in the negative mounting groove (200);
the right end of the negative pole post (3) is positioned at the top of the negative sealing ring (7) and is not contacted with the inner side wall of the negative mounting groove (200); the left end of the cathode pole (3) is placed in the cathode positioning plate (8);
the negative electrode positioning sheet (8) is fixedly connected with the top surface of the battery light plate (1);
the outer wall of the convex ring at the top of the anode mounting groove (100) is provided with an anode external insulation ring (4) in an injection molding mode;
the bottom surface of the anode external insulation ring (4) is tightly contacted with the top surface of the battery light plate (1);
the outer wall of the convex ring at the top of the negative electrode mounting groove (200) and the outer wall of the negative electrode positioning sheet (8) are provided with a negative electrode outer insulating ring (5) in an injection molding mode;
the bottom surface of the cathode external insulation ring (5) is tightly contacted with the top surface of the battery light plate (1).
2. The battery cover plate structure of claim 1, wherein the left edge of the cathode mounting groove (200) is provided with a reserved notch (2001) for embedding the middle part of the cathode post (3);
the bottom surfaces of the left end and the right end of the cathode pole (3) are positioned on the same horizontal plane.
3. The battery cover plate structure according to claim 1, wherein the negative electrode positioning piece (8) is a positioning piece having an upper end opened.
4. The battery cover plate structure of claim 1, wherein the battery light plate (1) is provided with a pressure turning film mounting groove (300) at the left side of the cathode mounting groove (200);
the pressure overturning film mounting groove (300) is internally laser-welded with a pressure overturning film (11).
5. The battery cover plate structure according to claim 4, wherein the pressure reversal film (11) is located right under the negative electrode positioning plate (8) and right under the left end of the negative electrode post (3).
6. The battery cover plate structure as claimed in claim 1, wherein the bottom surface of the battery light plate (1) is fixedly connected with an upper gasket (10);
the left end and the right end of the upper gasket (10) are respectively provided with a first through hole (101) and a second through hole (102);
the first through hole (101) is positioned right below the anode mounting groove (100);
and the second through hole (102) is positioned right below the negative pole mounting groove (200).
7. The battery cover plate structure of claim 6, wherein a positive electrode connecting piece (12) and a negative electrode connecting piece (13) are respectively arranged below the left and right ends of the upper gasket (10);
the left end of the top of the positive connecting piece (12) is provided with a positive connecting bulge (122);
the positive pole connecting bulge (122) penetrates through the first through hole (101) and is ultrasonically welded with the bottom surface of the positive pole column (2);
the right end of the top of the negative connecting sheet (13) is provided with a negative connecting bulge (132);
the negative electrode connecting bulge (132) penetrates through the second through hole (102) and is welded with the bottom surface of the right end of the negative electrode pole (3).
8. The battery cover plate structure of claim 7, wherein the top right end of the positive connecting plate (12) is provided with a positive tab connecting part (121) for welding with a positive tab of an external battery pole group;
the left end of the top of the negative electrode connecting sheet (13) is a negative electrode tab connecting part (131) which is used for being welded with a negative electrode tab of an external battery electrode group;
a positive electrode fusing protection injection molding rubber block (9) is arranged at the transverse middle position of the positive electrode connecting sheet (12);
a section of easily conductive fusing strip is wrapped in the positive fusing protection injection molding rubber block (9);
the fusing strip is positioned between the left end and the right end of the positive connecting piece (12) and is used as a link for current transmission between the left end and the right end of the positive connecting piece (12).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020394692.3U CN212011038U (en) | 2020-03-25 | 2020-03-25 | Battery cover plate structure for integrally injection molding of pole column |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020394692.3U CN212011038U (en) | 2020-03-25 | 2020-03-25 | Battery cover plate structure for integrally injection molding of pole column |
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| CN212011038U true CN212011038U (en) | 2020-11-24 |
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| CN202020394692.3U Active CN212011038U (en) | 2020-03-25 | 2020-03-25 | Battery cover plate structure for integrally injection molding of pole column |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111416069A (en) * | 2020-03-25 | 2020-07-14 | 力神动力电池系统有限公司 | A battery cover structure with integral injection molding of poles |
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2020
- 2020-03-25 CN CN202020394692.3U patent/CN212011038U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111416069A (en) * | 2020-03-25 | 2020-07-14 | 力神动力电池系统有限公司 | A battery cover structure with integral injection molding of poles |
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Effective date of registration: 20220307 Address after: 266500 Minshan Road, Huangdao District, Qingdao, Shandong Patentee after: LISHEN (QINGDAO) NEW ENERGY CO.,LTD. Address before: 300384 Tianjin Binhai New Area Binhai high tech Industrial Development Zone Huayuan science and Technology Park (outer ring) 38 Haitai South Road Patentee before: LISHEN POWER BATTERY SYSTEMS Co.,Ltd. |
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