CN2722445Y - Leading structure of battery and lithium ion battery therewith - Google Patents
Leading structure of battery and lithium ion battery therewith Download PDFInfo
- Publication number
- CN2722445Y CN2722445Y CN2004200600318U CN200420060031U CN2722445Y CN 2722445 Y CN2722445 Y CN 2722445Y CN 2004200600318 U CN2004200600318 U CN 2004200600318U CN 200420060031 U CN200420060031 U CN 200420060031U CN 2722445 Y CN2722445 Y CN 2722445Y
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- Prior art keywords
- battery
- positive
- end cap
- negative electrode
- wiring board
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- Expired - Lifetime
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- Connection Of Batteries Or Terminals (AREA)
Abstract
The utility model relates to a leading structure of a battery, which comprises an end cover, a bottom cover and a battery protection circuit board, wherein the battery protection circuit board comprises a positive pole contact pole piece and a negative pole contact pole piece; the positive pole contact pole piece and the negative pole contact pole piece are electrically connected with a battery core and a load; the bottom cover is connected with the battery core; the battery protection circuit board is positioned between the end cover and the bottom cover, and the bottom cover and the end cover are in clamp connection. A lithium ion battery comprises the leading structure of a battery and a battery core which is fixedly connected with the leading structure of a battery; the end cover and the bottom cover adopt mechanical cooperation. Compared with the prior art that a protection circuit board is fixed between an end cover and a battery core, the leading structure of a battery has the advantages of convenient installation and production cost saving.
Description
[technical field]
The utility model relates to the lithium ion battery field.
[background technology]
Lithium ion battery is as a kind of novel high power capacity, high-output power, safety, environmental protection, free of contamination rechargeable battery, in equipment such as mobile phone, notebook computer, PDA, obtain application more and more widely in recent years, become the standard configuration of these equipment at present.
Lithium ion battery generally partly is made up of electric core, battery protection wiring board and plastic shell etc.The battery protection wiring board places between electric core and the shell.Plastic shell is used for fixing the relative position of electric core and battery protection wiring board and wiring board is protected.The inside of electricity core includes positive/negative plate, barrier film and electrolyte.Whole electric core adopts the metal shell encapsulation, and the positive and negative lug that links to each other with the positive and negative plate of inside is respectively arranged in the outside of electric core.Positive and negative lug is connected with the battery protection wiring board earlier, and the contact pole piece by the battery protection wiring board links to each other with load (as body or the charger of mobile phone, notebook computer, PDA etc.) again.Yet this kind battery is owing to need a plastic shell of making separately, thereby cost is higher, and it is also comparatively complicated, inconvenient to be assembled into the process of battery finished product by electric core.
For addressing the above problem, prior art has proposed a kind of lithium ion battery structure that saves plastic shell, and it is in two ends up and down of electric core end cap to be set respectively.End cap adopts the mode of whole encapsulating to make, battery protection wiring board glue between end cap and electric core.Have on the end cap can make the battery protection wiring board the contact pole piece can with extraneous cavity in contact, and be used for perforate that the performance of electric core and battery protection wiring board is tested.Yet there is following defective in this kind mode: the manufacturing process more complicated of whole encapsulating, cost is also higher, and the firm degree that combines between end cap and the electric core is also lower.
In order to strengthen the firm degree that combines between end cap and the electric core, MAT adopts welding manners to fix a rivet respectively earlier in two ends of end cap, adopts the mode of encapsulating to make end cap and make it again and links together with electric core.This mode has improved the firm degree that end cap combines with electric core to a certain extent, but its technology is complicated more, still can not the high problem of workout cost.
[utility model content]
The purpose of this utility model is to provide a kind of manufacturing process simple and battery deriving structure that can reduce cost and the lithium ion battery that contains this battery deriving structure.
The purpose of this utility model is achieved in that this battery deriving structure comprises end cap, bottom and battery protection wiring board; the battery protection wiring board comprises positive and negative electrode contact pole piece; this positive and negative electrode contact pole piece electrically connects electric core and external load; bottom is connected with electric core; the battery protection wiring board is positioned between end cap and the bottom, and this bottom and end cap mechanical connection.
One of described end cap and bottom are provided with buckle, its another on correspondence be provided with draw-in groove, this buckle and corresponding draw-in groove are clasped.
One of described end cap and bottom are provided with reference column, its another be provided with location hole, this reference column cooperates with the location hole axis hole.
Also comprise the positive and negative electrode connector that is positioned between end cap and the bottom, this positive and negative electrode connector contacts pole piece with corresponding electric core positive and negative electrode with positive and negative electrode respectively and connects.
A kind of lithium ion battery; comprise electric core and be installed in battery deriving structure on this electricity core end; the electricity core has positive and negative electrode; this battery deriving structure comprises end cap, bottom and battery protection wiring board; the battery protection wiring board comprises positive and negative electrode contact pole piece, and this positive and negative electrode contact pole piece electrically connects the positive and negative electrode and the external load of electric core, and bottom is connected with electric core; the battery protection wiring board is positioned between end cap and the bottom, and this bottom and end cap mechanical engagement.
Described end cap and bottom are clasped.
Compared with prior art; the utlity model has following advantage: by adopting mechanical engagement between end cap and the bottom; and cell circuit board is positioned between this end cap and the bottom; utilize encapsulating and baffle wiring board glue is positioned technology between end cap and the electric core compared to existing; the be more convenient for location of cell circuit board of this structure; and packaging efficiency is higher, and owing to do not need encapsulating, so saved production cost.
[description of drawings]
Fig. 1 is the stereogram that the utility model contains the lithium ion battery of battery deriving structure.
Fig. 2 is the three-dimensional exploded view that the utility model contains the lithium ion battery of battery deriving structure.
Fig. 3 is the stereogram of the positive and negative electrode connector of the utility model battery deriving structure.
Fig. 4 and Fig. 5 are the stereograms of two angles of end cap of the utility model battery deriving structure.
Fig. 6 and Fig. 7 are respectively the stereograms of both direction of the battery protection circuit of the utility model battery deriving structure.
Fig. 8 and Fig. 9 are the stereograms of two angles of bottom of the utility model battery deriving structure.
Figure 10 is that the end cap and the bottom of the utility model battery deriving structure cooperates preceding stereogram.
Figure 11 is the stereogram of the electric core of the utility model lithium ion battery of containing the battery deriving structure.
[embodiment]
See also Fig. 1 to Fig. 2; the utility model battery deriving structure is in order to connect the electric core 3 and the external load (as mobile phone, PDA or charger) of lithium ion battery; comprise end cap 1, bottom 4, battery protection wiring board 8, electrode connector 13,14 and insulator 15.
Please in conjunction with consulting Fig. 3 to Figure 10, end cap 1 and bottom 4 mechanical connections.End cap 1 is the lengthwise shape, and it is made by resin or the injection molding mode of plastic cement.This end cap 1 comprises end cap base 11 and four end cap side walls 12 that extend to bottom 4 directions respectively from four lateral margins of this end cap base 11.This end cap base 11 is tabular, and its middle position runs through and is provided with a pair of test pole piece accepting hole 111, in this test pole piece accepting hole 111 bilateral symmetry is provided with positive and negative electrode contact pole piece accepting groove 112.These four end cap side walls, 12 head and the tail connect, be provided with the end cap positioning seat 122 of tool certain altitude in the intersection bottom of the two end cap side wall 12 of adjacency, be provided with reference column 123 in the projection that makes progress of the end face of this end cap positioning seat 122, on two parallel end cap side walls 12 of longitudinal extension, run through respectively and be provided with two draw-in grooves 124, extending internally in the bottom of the end cap side wall 12 of one of them longitudinal extension is provided with arc bump 121, forms a wiring board mounting groove between these two arc bumps 121 and four the end cap positioning seats 122.
Bottom 4 comprises the bottom pedestal 41 that lengthwise extends, the middle position of this bottom pedestal 41 is interval with square anodal mounting groove 411 and oval-shaped negative pole mounting groove 412, four corners in this bottom pedestal 41 are respectively equipped with bottom mount pad 43, and these bottom mount pad 43 central authorities are provided with the installing hole 42 of tool certain depth; Position corresponding to end cap draw-in groove 124 on the both side edges of these bottom pedestal 43 longitudinal extensions is equipped with buckle 44, and this buckle 44 roughly is hook-shaped and extends in the outside cantilever of bottom pedestal 41 lateral margins, and these four buckles 44 are clasped with corresponding draw-in groove 124.
Please in conjunction with consulting Fig. 2, Fig. 6 and Fig. 7, cell circuit board 8 is installed between end cap 1 and the bottom 4.The damage that situations such as battery protection wiring board 8 has and overcharges, crosses and to put and the function of discharge prevention, and electric current is excessive in the time of can avoiding the excessive charging of battery, discharge and charging cause battery.The surface profile of this battery protection wiring board 8 is consistent with the shape of end cap wiring board mounting groove.The front of this battery protection wiring board 8 is provided with positive and negative electrode test contact pole piece 81,82; its back side is provided with positive and negative electrode contact pole piece 83,84, and this positive and negative electrode contact pole piece 83,84 contacts the internal electron circuit of pole piece 81,82 by battery protection wiring board 8 respectively and electrically connects with the positive and negative electrode test.One lateral margin of these battery protection circuit 8 plate longitudinal extensions is provided with the arc groove 85 that cooperates with the arc convex 121 of end cap 1.
Electrode connector is installed between end cap 1 and the bottom 4, comprise anodal connector 14 and negative pole connector 13, this positive and negative electrode connector 14,13 includes lamellar base portion 141,131, and the hook-shaped elastic contact part 142,132 of " L " type that extends to upper cantilever from the lateral margin of this base portion 141,131.In the present embodiment; this negative pole connector 13 is a protector, and it has temperature protection function, if when charging battery temperature rise too high or electric current when excessive; the hurried increase of resistance meeting of protector, thus reach the purpose of deenergization and the safety of protection battery.In addition, between battery protection wiring board 8, anodal connector 14 and negative pole connector 13, isolate, thereby avoid positive and negative electrode connector 14,13 short circuits with insulating paper 15.Certainly, the also replaceable insulation boss for extending on the surface towards bottom from the battery protection wiring board of this insulating paper 15 makes the positive and negative electrode connector separately avoid its short circuit by this insulation boss.Above-mentioned insulating paper and insulation boss are described insulator.
Please in conjunction with consulting Figure 11, the lithium ion that contains above-mentioned battery deriving structure also comprises electric core 3, and this electricity core 3 is connected with above-mentioned battery deriving structure, and it adopts the metal shell encapsulation, and used metal can be the ordinary steel of aluminium, stainless steel or nickel plating etc.A cover plate 31 identical with its metal shell material is arranged at the top of electric core 3, and cover plate 31 mode and metal shell with laser welding after electric core 3 has been assembled combines.On cover plate 31, be provided with the negative electrode lug 32 that links to each other with the negative plate of electric core 3 inside, the positive plate of electricity core 3 inside links to each other with the metal shell and the cover plate 31 of electric core 3, and then on cover plate 31, connect a sheet metal and become anode ear, between negative electrode lug 32 and the cover plate 31 that links to each other with anode, be provided with insulating barrier.In addition, also have a glued member 2 to be connected with electric core 3 in the bottom of battery, its connected mode also is that polyacrylate glueds joint.
During 3 assemblings of this battery deriving structure and electric core, with the firm splicing one of the cover plate 31 of bottom 4 by high-intensity polyacrylic acid ester gum and electric core 3, the positive and negative lug of electric core 3 lays respectively in the positive and negative electrode mounting groove 411,412 of bottom at this moment; Then just, negative pole connector 14,13 are installed in respectively in the bottom 4 also by bottom mount pad 41 location, the substrate 131 of negative pole connector 13 covers negative pole mounting grooves 412 and contacts with the negative lug 32 of electric core 3 at this moment, the substrate 141 of anodal connector 14 covers anodal mounting groove 411 and contacts with the positive pole ear of electric core 3, battery protection wiring board 8 is to be positioned in the arc convex 121 of end cap 1 and the wiring board mounting groove that four end cap mount pads 122 are formed, this moment just, negative pole connector 14,13 elastic contact part 142,132 respectively with battery protection wiring board 8 just, negative pole contact pole piece 83,84 connect, 15 1 surfaces of insulating paper are just to adhere on, negative pole connector 14, on 13 the surface, and battery protection wiring board 8 is pressed in another surface of this insulating paper 15, thereby just makes, negative pole connector 14,13 and battery protection circuit 8 be positioned between end cap 1 and the bottom 4; Again the reference column 123 of end cap 1 is aimed at the location hole 42 of bottom 4, then the buckle 44 of bottom 4 and the draw-in groove 124 of end cap 1 are clasped, in order to strengthen the firm degree between end cap 1 and the bottom 4, can glued joint with 401 glue in the cooperation place of end cap 1 and bottom 4, in location hole 42, also 401 glue be can coat, and itself and reference column 123 secure fit made.Certainly, after this battery deriving structure can assemble earlier voluntarily, again bottom 4 cover plate 31 glue with electric core are connected, can realize being connected of this battery deriving structure and electric core.
In use; the negative electrode lug that links to each other with the negative plate of electric core 3 welds with negative pole connector 13 earlier; this negative pole connector 13 contacts pole piece 84 welding again with the negative pole of battery protection wiring board 8 then; the anode ear that links to each other with the cover plate at electric core top directly contacts pole piece 83 welding by anodal connector 14 with the positive pole of battery protection wiring board 8; positive and negative electrode by battery protection wiring board test contact pole piece 81,82 is connected with extraneous load again, provides power supply to load or battery is charged with realization.
Certainly, also can connect between bottom and the end cap by threaded fastener; Also can cooperate, thereby utilize this sawtooth that end cap firmly is connected with bottom by zigzag reference column and location hole are set between bottom and end cap; Draw-in groove can be located on the bottom, and buckle can be located on the end cap; Location hole can be arranged on the end cap, and reference column can be located on the bottom.
In the utility model, adopt mechanical engagement between the setting by bottom and end cap and the bottom, and the battery protection wiring board is positioned between end cap and the bottom, with respect to the whole encapsulating of prior art and simplified manufacturing process, and saved production cost; By being clasped between end cap and the bottom, and make cooperation between the two more firm.
Claims (10)
1. battery deriving structure; comprise end cap and battery protection wiring board; the battery protection wiring board comprises positive and negative electrode contact pole piece; this positive and negative electrode contact pole piece electrically connects electric core and external load; it is characterized in that: also comprise the bottom that is connected with electric core; the battery protection wiring board is positioned between end cap and the bottom, and this bottom and end cap mechanical connection.
2. battery deriving structure as claimed in claim 1 is characterized in that: described end cap and bottom clamping.
3. battery deriving structure as claimed in claim 2 is characterized in that: one of described end cap and bottom are provided with buckle, its another on correspondence be provided with draw-in groove, this buckle and corresponding draw-in groove are clasped.
4. battery deriving structure as claimed in claim 3 is characterized in that: one of described end cap and bottom are provided with reference column, its another be provided with location hole, this reference column cooperates with the location hole axis hole.
5. as any described battery deriving structure of claim 1-4, it is characterized in that: also comprise the positive and negative electrode connector that is positioned between end cap and the bottom, this positive and negative electrode connector contacts pole piece with corresponding electric core positive and negative electrode with positive and negative electrode respectively and connects.
6. battery deriving structure as claimed in claim 5; it is characterized in that: described positive and negative electrode connector comprises that substrate reaches the contact site from the cantilever-shaped extension of this substrate lateral margin; the positive and negative electrode of this base portion and electric core connects, and this contact site connects with the positive and negative contact pole piece of corresponding battery protection wiring board.
7. battery deriving structure as claimed in claim 6 is characterized in that: be provided with insulator between described battery protection wiring board and the positive and negative electrode connector, this insulator this positive and negative electrode connector that insulate.
8. battery deriving structure as claimed in claim 7 is characterized in that: described insulator is a dielectric film.
9. lithium ion battery; comprise electric core and be installed in battery deriving structure on this electricity core end; the electricity core has positive and negative electrode; this battery deriving structure comprises end cap and battery protection wiring board; the battery protection wiring board comprises positive and negative electrode contact pole piece; this positive and negative electrode contact pole piece electrically connects the positive and negative electrode and the external load of electric core; it is characterized in that: also comprise the bottom that is connected with electric core; the battery protection wiring board is positioned between end cap and the bottom, and this bottom and end cap mechanical engagement.
10. as lithium ion battery as described in the claim 9, it is characterized in that: described end cap and bottom are clasped.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2004200600318U CN2722445Y (en) | 2004-06-24 | 2004-06-24 | Leading structure of battery and lithium ion battery therewith |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2004200600318U CN2722445Y (en) | 2004-06-24 | 2004-06-24 | Leading structure of battery and lithium ion battery therewith |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2722445Y true CN2722445Y (en) | 2005-08-31 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2004200600318U Expired - Lifetime CN2722445Y (en) | 2004-06-24 | 2004-06-24 | Leading structure of battery and lithium ion battery therewith |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2722445Y (en) |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102290553A (en) * | 2011-07-26 | 2011-12-21 | 深圳市豪鹏科技有限公司 | Battery pack |
| CN102751464A (en) * | 2011-12-30 | 2012-10-24 | 东莞新能德科技有限公司 | Battery pack and preparation method thereof |
| CN102881851A (en) * | 2012-10-23 | 2013-01-16 | 杭州万好万家动力电池有限公司 | Universal lithium ion battery module |
| CN102916217A (en) * | 2011-08-03 | 2013-02-06 | 深圳市比克电池有限公司 | Lithium battery and lithium battery packaging process |
| US8394528B2 (en) | 2007-05-21 | 2013-03-12 | Samsung Sdi Co., Ltd. | Lithium polymer battery |
| CN102035018B (en) * | 2009-09-29 | 2015-01-21 | 深圳市比克电池有限公司 | Square lithium-ion battery |
| JP7152364B2 (en) | 2019-06-18 | 2022-10-12 | 矢崎総業株式会社 | Electric wire holding structure and busbar module |
-
2004
- 2004-06-24 CN CN2004200600318U patent/CN2722445Y/en not_active Expired - Lifetime
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US8394528B2 (en) | 2007-05-21 | 2013-03-12 | Samsung Sdi Co., Ltd. | Lithium polymer battery |
| CN102035018B (en) * | 2009-09-29 | 2015-01-21 | 深圳市比克电池有限公司 | Square lithium-ion battery |
| CN102290553A (en) * | 2011-07-26 | 2011-12-21 | 深圳市豪鹏科技有限公司 | Battery pack |
| CN102290553B (en) * | 2011-07-26 | 2013-12-11 | 深圳市豪鹏科技有限公司 | Battery pack |
| CN102916217A (en) * | 2011-08-03 | 2013-02-06 | 深圳市比克电池有限公司 | Lithium battery and lithium battery packaging process |
| CN102916217B (en) * | 2011-08-03 | 2016-01-06 | 深圳市比克电池有限公司 | Lithium battery and lithium battery encapsulation technique |
| CN102751464A (en) * | 2011-12-30 | 2012-10-24 | 东莞新能德科技有限公司 | Battery pack and preparation method thereof |
| CN102751464B (en) * | 2011-12-30 | 2015-09-09 | 东莞新能德科技有限公司 | A kind of battery pack and preparation method thereof |
| CN102881851A (en) * | 2012-10-23 | 2013-01-16 | 杭州万好万家动力电池有限公司 | Universal lithium ion battery module |
| JP7152364B2 (en) | 2019-06-18 | 2022-10-12 | 矢崎総業株式会社 | Electric wire holding structure and busbar module |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| EE01 | Entry into force of recordation of patent licensing contract |
Assignee: Shenzhen BYD Lithium Battery Co., Ltd. Assignor: Biyadi Co., Ltd. Contract fulfillment period: 2008.4.25 to 2012.11.19 Contract record no.: 2008440000071 Denomination of utility model: Cell extraction structure and lithium ion cell with the same structure Granted publication date: 20050831 License type: Exclusive license Record date: 20080513 |
|
| LIC | Patent licence contract for exploitation submitted for record |
Free format text: EXCLUSIVE LICENCE; TIME LIMIT OF IMPLEMENTING CONTACT: 2008.4.25 TO 2012.11.19 Name of requester: SHENZHEN BYD LITHIUM BATTERY CO., LTD. Effective date: 20080513 |
|
| EE01 | Entry into force of recordation of patent licensing contract |
Assignee: Shenzhen BYD Lithium Battery Co., Ltd. Assignor: Biyadi Co., Ltd. Contract fulfillment period: 2008.11.12 to 2014.4.30 Contract record no.: 2008440000368 Denomination of utility model: Cell extraction structure and lithium ion cell with the same structure Granted publication date: 20050831 License type: Exclusive license Record date: 20081113 |
|
| LIC | Patent licence contract for exploitation submitted for record |
Free format text: EXCLUSIVE LICENSE; TIME LIMIT OF IMPLEMENTING CONTACT: 2008.11.12 TO 2014.4.30; CHANGE OF CONTRACT Name of requester: SHENZHEN CITY BIYADILI BATTERY CO., LTD. Effective date: 20081113 |
|
| C17 | Cessation of patent right | ||
| CX01 | Expiry of patent term |
Expiration termination date: 20140624 Granted publication date: 20050831 |