CN201667366U - Lithium ion battery - Google Patents
Lithium ion battery Download PDFInfo
- Publication number
- CN201667366U CN201667366U CN2010201225283U CN201020122528U CN201667366U CN 201667366 U CN201667366 U CN 201667366U CN 2010201225283 U CN2010201225283 U CN 2010201225283U CN 201020122528 U CN201020122528 U CN 201020122528U CN 201667366 U CN201667366 U CN 201667366U
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- China
- Prior art keywords
- protection circuit
- circuit plate
- lithium ion
- electrode
- ion battery
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- Expired - Lifetime
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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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- Connection Of Batteries Or Terminals (AREA)
Abstract
The utility model provides a lithium ion battery which comprises a battery core, a bracket, a protective circuit board and an end cover. The bracket, the protective circuit board and the end cover are located at the end part of the battery core; the bracket is arranged on the end part of the battery core, the protective circuit board is arranged on the bracket, and the bracket and the protective circuit board are contained in the end cover; two electrodes with opposite polarities are arranged on the end part of the battery core, namely a first electrode and a second electrode; a first electricity input end and a second electricity input end used as electricity input ends and a golden finger used as an electricity output end are arranged on the protective circuit board, wherein the lithium ion battery further comprises a plurality of connecting pieces which fix the bracket, the protective circuit board and the end cover on the end part of the battery core after sequentially penetrating through the bracket, the protective circuit board and the end cover; the first electrode is directly and electrically connected with the first electricity input end by the connecting pieces, and the second electrode is directly and electrically connected with the second electricity input end by the connecting pieces. By adopting the above technical scheme, the lithium ion battery has the characteristics of compact structure, good mechanical connection and quite reliable electrical connection; in addition, internal resistance of the battery is reduced.
Description
Technical field
The utility model belongs to field of batteries, relates in particular to the lithium ion battery field.
Background technology
We know that lithium ion battery is with positive plate, barrier film, negative plate coiling or after being stacked to pole piece; pole piece is put into the cavity of battery container and cover plate formation; inner inject electrolyte through seal step such as change into after promptly; but in fact; also need to pack and just can become the truly battery of safety; will the protection circuit plate be installed in its battery end and just can be used for powering load, the battery that the protection circuit plate often will also be installed in the industry is called electric core.The end of electricity core promptly is a cover plate, and the cover board body of cover plate is as an electrode, and that install on the cover board body and the rivet cover board body insulation are as another electrode.
The protection circuit plate realized by existing battery and electric core is electric and method mechanical connection is as follows:
Generally be electrically connected by connecting band (banded compound nickel strap or nickel strap, steel band) and connect electric core end and protection circuit plate, the normal various welding manners such as Laser Welding, electric resistance welding, supersonic welding, soldering that adopt of connection.Adopt the mode of welding to occur problems such as rosin joint, connection reliability is relatively poor, operation is many easily.
The protection circuit plate adopts buckle, splicing or injection moulding or the like mode to be fixed on electric core end by placing in the end cap, realize the mechanical connection of its protection circuit plate and electric core.Yet the mode of this kind mechanical connection exists connection not firm, and is easily loosening, the problem that easily drops etc.
Scheme with improvement: adopt screw that end cap and protection circuit plate etc. is fixed on electric core end, be electrically connected between protection circuit plate and the electric core end and be welded to connect by connecting band.This scheme has significantly been improved its mechanical connection manner, but still there is the relatively poor problem of reliability that is electrically connected in it.Lossless detection method and the apparatus for production line that not have to get well for quality present stage of welding has high input, production process is many.
The utility model content
The utility model provides a kind of lithium ion battery that connector provides mechanical connection and electrical connection simultaneously that has for solving the problems of the technologies described above.
The utility model lithium ion battery comprises electric core and is positioned at support, protection circuit plate and the end cap of electric core end; Support is arranged on the electric core end, and the protection circuit plate is arranged on the support, and support and protection circuit plate are contained in the end cap;
Electricity core end is provided with opposite polarity two electrodes, is called first electrode and second electrode;
The protection circuit plate is provided with as first electrical input of electrical input and second electrical input, and is provided with the golden finger as electric output;
First electrode and first electrical input are electrically connected, and second electrode and second input are electrically connected;
Wherein, also comprise some connectors; connector passes support, protection circuit plate and end cap successively the three is fixed on the electric core end, and the electrical connection of the electrical connection of first electrode and first electrical input and second electrode and second electrical input all directly is connected by described connector.
Adopt technical solutions of the utility model, compact conformation, and can shorten being connected apart to reduce the internal resistance of battery of electric core and protection circuit plate.And lacked special-purpose connecting band, the multiple welding of having lacked connecting band, the mode that adopts connecting band to be electrically connected compared to existing technology, the utility model not only mechanical connection is good, its electrical connection is also very reliable, simultaneously, its reliability is higher, production efficiency is higher, cost is lower, fixedly the production equipment input still less waits, reduced the battery production operation.
Description of drawings
Fig. 1 is the decomposing schematic representation of a kind of execution mode of the utility model lithium ion battery;
Fig. 2 is Fig. 1 medium-height trestle schematic diagram;
Fig. 3 is a protection circuit plate schematic diagram among Fig. 1.
Embodiment
Clearer for technical problem, technical scheme and beneficial effect that the utility model is solved, below in conjunction with drawings and Examples, the utility model is further elaborated.Should be appreciated that specific embodiment described herein only in order to explanation the utility model, and be not used in qualification the utility model.
As shown in the figure, the disclosed lithium ion battery of the utility model comprises electric core 1 and is positioned at support 2, protection circuit plate 3 and the end cap 4 of electric core end 10; Support 2 is arranged on the electric core end 10, and protection circuit plate 3 is arranged on the support 2, and support 2 and protection circuit plate 3 are contained in the end cap 4.
Electricity core end 10 is provided with opposite polarity two electrodes, is called first electrode and second electrode.
First electrode and first electrical input are electrically connected, and second electrode and second input are electrically connected.
Also comprise some connectors; connector passes support 2, protection circuit plate 3 and end cap 4 successively the three is fixed on the electric core end 10, and the electrical connection of the electrical connection of first electrode and first electrical input and second electrode and second electrical input all directly is connected by described connector.
As above said connector is selected from the good conductor of various conductions; such as materials such as various metals, alloys; when its objective is as mechanical connection; if needs are arranged; also can be with being electrically connected; connecting the electrical connection that can guarantee protection circuit plate 3 and electric core 1 again as long as can realize good mechanical, is screw or pin such as connector.Be preferably screw 5.Adopt screw 5 obviously because the threaded engagement of screw and screwed hole also can guarantee good electrical connection when being easier to realize mechanical engagement.
Be provided with above the protection circuit plate 3 overcharge, cross put, the protective circuit of overcurrent protection.The input of protective circuit is this first electrical input and second electrical input; the output of protective circuit is a golden finger 34; golden finger 34 is used for and the electrical appliance termination contact; golden finger 34 minimum two; general three also have more than three, are respectively P+, P-, NTC, ID, signal input part etc.
Support 2 prevents short circuit in order to support components and parts and electric core end 10 metal parts on protection circuit plate 3 and the insulation blocking wiring board 3.
Pass the mode of support 2, protection circuit plate 3 and end cap 4 successively about connector; preferably correspondence is provided with the through hole that passes for connector on support 2, protection circuit plate 3 and end cap 4; through hole on the protection circuit plate 3 is as first electrical input or second electrical input, and correspondence is provided with blind hole on the electric core end 10.When adopting screw 5 as connector, above-mentioned through hole and blind hole are screwed hole, and screw is threaded with screwed hole, guarantees the reliability of its mechanical connection and electrical connection.Connector can pass on support 2, protection circuit plate 3 and the end cap 4 corresponding through hole successively like this, and the blind hole of corresponding setting is assembled on final and the electric core end 10.Because through hole is as first electrical input or second electrical input on the protection circuit plate; Be that protection circuit is connected on the through hole, but make through hole conducting electric current, this is easy to realize, such as in through-hole surfaces copper facing or zinc-plated etc., through hole can be electrically connected with connector.Therefore connector can directly be connected the protection circuit plate with electric core end; End cap 4, protection circuit plate 3 and support 2 are installed in electric core end 10 and realize protection circuit plate 3 simultaneously and the purpose of electric core end 10 electrical connections with realization.
As everyone knows, electric core 1 comprises battery case, cover plate and is positioned at battery case and the pole piece and the electrolyte of cavity that cover plate surrounds; Pole piece is so-called positive plate, barrier film, negative plate through reeling or somely repeatedly repeating stacked and the assembly that electric energy is provided that form.Its cover plate is to comprise cover board body 11 and the rivet 12 that insulate with cover board body 11, adopts the plastic parts insulation to isolate between cover board body 11 and the rivet 12.Draw anode ear in the pole piece on the positive plate, draw negative electrode lug on the negative plate, anode ear and negative electrode lug are connected by soldering or the like on cover board body 11 and the rivet 12 again, so have had different polarity on cover board body 11 and the rivet 12.Describe for convenient, defining first electrode is that cover board body 11, the second electrodes are the rivet 12 that insulate with cover board body 11.First electrode can be used as positive pole, and then second electrode is a negative pole, and first electrode that also has is as negative pole, and second electrode is as positive pole.
Preferably the through hole is provided with the position of bone of protrusion of surface on support 2.
Because rivet 12 also can take certain space, therefore preferably be provided with the groove that mates with rivet 12 at support 2 lower surfaces, can play space-saving effect like this.
The through hole that passes for connector on the end cap 4 is provided with fluid sealant 47 and seals (or claiming sealing of hole).Because connector is a metalwork, expose problem such as easily cause getting rusty, become flexible and occur, had fluid sealant 47 to seal, can hide the connector exposed parts, prevent connector get rusty, loosening.Play the effect that beautifies the battery outward appearance simultaneously.
In order to play good electrical connection effect, preferably through-hole surfaces is zinc-plated on the protection circuit plate.
As for the manufacture method of positive plate, negative plate, barrier film, and other technology for manufacturing electric core etc. are conventionally known to one of skill in the art, therefore repeat no more.
Embodiment 1
To illustrate the electrical connection of first electrode and first electrical input and the electrical connection of second electrode and second electrical input below all directly is connected by described connector.With the connector is that screw 5 is an example.
As shown in Figure 1-Figure 3, lithium ion battery in this example comprises electric core 1 and is positioned at support 2, protection circuit plate 3 and end cap 4 on the electric core end 10; Support 2 is arranged on the electric core end 10, and protection circuit plate 3 is arranged on the support 2, and support 2 and protection circuit plate 3 are contained in the end cap 4;
Electricity core end 10 is provided with opposite polarity two electrodes, is called first electrode and second electrode; First electrode is that cover board body 11, the second electrodes are rivet 12 in this example.
As shown in Figure 3, protection circuit plate 2 is provided with as first electrical input of electrical input and second electrical input, and is provided with the golden finger 34 as electric output.
As shown in Figure 1, connector is a screw 5 in this example, for convenience of description, is named as first screw 51, second screw 52, the 3rd screw 53 respectively for each screw 5.
First screw 51 passes on through hole 41 on the end cap, the protection circuit plate through hole 21 on through hole 31, the support respectively, finally is tightened on the cover board body on the blind hole 110.Through hole 31 links to each other with protection circuit on the protection circuit plate 3 simultaneously as first electrical input of protection circuit plate 3 on the protection circuit plate.To be electrically connected with first electrical input on the protection circuit plate 3 as the cover board body 11 of first electrode by first screw 51 like this.
Second screw 52 passes on through hole 42 on the end cap, the protection circuit plate through hole 22 on through hole 32, the support respectively, finally is tightened on the rivet on the blind hole 120.Through hole 32 links to each other with protection circuit on the protection circuit plate 3 simultaneously as second electrical input on the protection circuit plate.To be electrically connected with second electrical input on the protection circuit plate 3 as the rivet 12 of second electrode by second screw 52 like this.
The 3rd screw 53 passes on through hole 43 on the end cap, the protection circuit plate through hole 23 on through hole 33, the support respectively, finally is tightened on the cover board body on the blind hole 111.Through hole 31 links to each other with protection circuit on the protection circuit plate 3 simultaneously as first electrical input of protection circuit plate 3 on the protection circuit plate.To be electrically connected with first electrical input on the protection circuit plate 3 as the cover board body 11 of first electrode by the 3rd screw 53 like this.
In fact, first screw 51 and the 3rd screw 53 also can have only one to be electrically connected and to get final product, and another is as mechanical connection usefulness, and need not as the connector that is electrically connected.
As shown in Figure 2, through hole 21,22, the 23 cylindrical position of bone that pass for screw on the support 2.It in the cylinder through hole.This cylindrical protrusion can support wiring board, when assembling connector is play the guiding role simultaneously.
On the support 2 some clamping parts 24 can be set also simultaneously is connected with the end cap buckle; simultaneously; preferably will hollow out in the middle of the support 2, make that the components and parts height overlaps to the backing thickness space on the protection circuit plate 3, can save out a less space of two intermediate values of support and protection circuit board component.The length space can be better saved in change like this, makes battery compact more at length direction.
End cap 4 is provided with the window 44 that exposes for golden finger 34 on the protection circuit plate 3.Protection circuit plate 3 is provided with calibrating terminal 35, and corresponding calibrating terminal 35 places are provided with the instrument connection 45 of opening on the end cap 4, after assembling is finished, also posts instrument connection labeling 46 on instrument connection 45.
By double faced adhesive tape 60 egative film 6 is bonded in electric core bottom.Egative film 6 mainly plays insulation, protection battery bottom, the assembling and positioning in electrical appliance and increases battery attractive in appearance.
Also be enclosed with the packing labeling 7 of sign and insulating effect in the lithium ion battery side.
The assembling process of this routine lithium ion battery is described below, at first protection circuit plate 3 is put into end cap 4, golden finger 34 is corresponding with window 44 on the end cap 4 on the protection circuit plate 3; And make on the end cap on the through hole and protection circuit plate through hole corresponding one by one.And then support 2 buckled in the end cap 4, making that clamping part 24 is snapped into snapped-in position corresponding in the end cap 4 on the support 2, buckle connects; And guarantee on the protection circuit plate that through hole is corresponding one by one on the through hole and support.To be assembled to through the end cap 4 of above-mentioned steps on the electric core end 10 at last.Again first screw 51 is passed on through hole 41 on the end cap, the protection circuit plate through hole 21 on through hole 31, the support respectively, finally be tightened on the cover board body on the blind hole 110; Second screw 52 is passed on through hole 42 on the end cap, the protection circuit plate through hole 22 on through hole 32, the support respectively, finally be tightened on the rivet on the blind hole 120; The 3rd screw 53 is passed on through hole 43 on the end cap, the protection circuit plate through hole 23 on through hole 33, the support respectively, finally be tightened on the cover board body on the blind hole 111.And with fluid sealant 47 through hole on the end cap 4 41,42,43 is sealed, post instrument connection labeling 45.Use double faced adhesive tape 60 that egative film 6 is bonded to the bottom of electric core 1 at last, superscribe battery packages labeling 7 at last.Through above-mentioned steps promptly finished protection circuit plate and electric core machinery and be electrically connected.
Reduced two connecting bands and 2-5 time welding sequence, 1-2 time bending positioning process, the QC operation of 2 welding in this process, so the battery production efficient of this planform general height very, the permanent plant input reduces in a large number.Greatly degree has reduced the production cost of battery, has guaranteed that simultaneously the protection circuit plate is connected with electric core favorable mechanical and is electrically connected.
The above only is preferred embodiment of the present utility model; not in order to restriction the utility model; all any modifications of within spirit of the present utility model and principle, being done, be equal to and replace and improvement etc., all should be included within the protection range of the present utility model.
Claims (10)
1. lithium ion battery comprises electric core and is positioned at support, protection circuit plate and the end cap of electric core end; Support is arranged on the electric core end, and the protection circuit plate is arranged on the support, and support and protection circuit plate are contained in the end cap;
Electricity core end is provided with opposite polarity two electrodes, is called first electrode and second electrode;
The protection circuit plate is provided with as first electrical input of electrical input and second electrical input, and is provided with the golden finger as electric output;
First electrode and first electrical input are electrically connected, and second electrode and second electrical input are electrically connected;
It is characterized in that: also comprise some connectors; connector passes support, protection circuit plate and end cap successively the three is fixed on the electric core end, and the electrical connection of the electrical connection of first electrode and first electrical input and second electrode and second electrical input all directly is connected by described connector.
2. lithium ion battery as claimed in claim 1 is characterized in that: described connector is screw or pin.
3. lithium ion battery as claimed in claim 1; it is characterized in that: the corresponding through hole that passes for connector that is provided with on support, protection circuit plate and the end cap; through hole on the protection circuit plate is as first electrical input or second electrical input, and correspondence is provided with blind hole on the electric core end.
4. lithium ion battery as claimed in claim 3 is characterized in that: described first electrode is a cover board body, and second electrode is the rivet that insulate with cover board body.
5. lithium ion battery as claimed in claim 4 is characterized in that: the through hole is provided with the position of bone of protrusion of surface on the support.
6. lithium ion battery as claimed in claim 5 is characterized in that: the support upper and lower surface is provided with the groove with rivet place coupling.
7. lithium ion battery as claimed in claim 3 is characterized in that: the through hole that passes for connector on the end cap is provided with fluid sealant and seals.
8. lithium ion battery as claimed in claim 3 is characterized in that: through-hole surfaces is coated with tin on the protection circuit plate.
9. lithium ion battery as claimed in claim 1 is characterized in that: described protection circuit plate is provided with calibrating terminal, and correspondence is provided with instrument connection on end cap, posts the instrument connection labeling on instrument connection.
10. lithium ion battery as claimed in claim 1 is characterized in that: the packing labeling that also has been enclosed with sign and insulating effect in the lithium ion battery side.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010201225283U CN201667366U (en) | 2010-02-27 | 2010-02-27 | Lithium ion battery |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010201225283U CN201667366U (en) | 2010-02-27 | 2010-02-27 | Lithium ion battery |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201667366U true CN201667366U (en) | 2010-12-08 |
Family
ID=43268329
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010201225283U Expired - Lifetime CN201667366U (en) | 2010-02-27 | 2010-02-27 | Lithium ion battery |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201667366U (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102306713A (en) * | 2011-09-05 | 2012-01-04 | 丁振荣 | Cap, protective circuit board, electrical core, lithium battery and packaging method thereof |
| CN103258982A (en) * | 2013-05-16 | 2013-08-21 | 江苏新日电动车股份有限公司 | Battery case for electric power system |
| CN110137393A (en) * | 2019-05-09 | 2019-08-16 | 广东因奥新能源科技有限公司 | A kind of battery cap component and battery |
| CN110350134A (en) * | 2019-05-29 | 2019-10-18 | 合肥国轩高科动力能源有限公司 | A kind of power battery connection sheet and stop frame integral type stop frame |
-
2010
- 2010-02-27 CN CN2010201225283U patent/CN201667366U/en not_active Expired - Lifetime
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102306713A (en) * | 2011-09-05 | 2012-01-04 | 丁振荣 | Cap, protective circuit board, electrical core, lithium battery and packaging method thereof |
| CN103258982A (en) * | 2013-05-16 | 2013-08-21 | 江苏新日电动车股份有限公司 | Battery case for electric power system |
| CN103258982B (en) * | 2013-05-16 | 2015-10-28 | 江苏新日电动车股份有限公司 | A kind of battery case for electric power system |
| CN110137393A (en) * | 2019-05-09 | 2019-08-16 | 广东因奥新能源科技有限公司 | A kind of battery cap component and battery |
| CN110350134A (en) * | 2019-05-29 | 2019-10-18 | 合肥国轩高科动力能源有限公司 | A kind of power battery connection sheet and stop frame integral type stop frame |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term |
Granted publication date: 20101208 |
|
| CX01 | Expiry of patent term |