CN100557856C - Battery cover board assembly and use the lithium ion battery of this assembly - Google Patents
Battery cover board assembly and use the lithium ion battery of this assembly Download PDFInfo
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- CN100557856C CN100557856C CNB2006101115050A CN200610111505A CN100557856C CN 100557856 C CN100557856 C CN 100557856C CN B2006101115050 A CNB2006101115050 A CN B2006101115050A CN 200610111505 A CN200610111505 A CN 200610111505A CN 100557856 C CN100557856 C CN 100557856C
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- cover board
- locating piece
- groove
- positive terminal
- anodal
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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
Abstract
Battery cover board assembly provided by the invention comprises positive terminal (2), negative terminal (3), metal cover board (1) and insulation clamp (5), the outer end of positive terminal (2) and negative terminal (3) is passed insulation clamp (5) respectively and is gone up anodal through hole (11) and the negative pole through hole (12) on anodal draw-in groove (51) and negative pole draw-in groove (52) and the metal cover board (1) and pass through securing member fastening, the peripheral surface shape of described positive terminal locating piece (21) and negative terminal locating piece (31) differs from one another, and non-rotatable respectively and be not contained in interchangeably in described anodal draw-in groove (51) and the negative pole draw-in groove (52).Become to differ from one another by peripheral surface shaped design with positive terminal locating piece and negative terminal locating piece, positive terminal locating piece and negative terminal locating piece can only be contained in respectively in described anodal draw-in groove and the negative pole draw-in groove, thereby can prevent that positive terminal and negative terminal are with the wrong location each other, improve the security performance of battery.
Description
Technical field
The present invention relates to field of batteries, the lithium ion battery that relates in particular to a kind of battery cover board assembly and use this battery cover board assembly.
Background technology
Existing battery generally comprises housing, cover plate and pole, and cover plate is fixed on the housing, and pole passes the through hole on the cover plate and uses nut fastening in addition.
Battery, especially the lithium ion battery of high power capacity, in charge and discharge process, can produce a large amount of heats, and the anodal heat that produces is higher than the heat that negative pole produces far away, this is because in charge and discharge process, because the material difference of positive and negative pole, the conductive coefficient of positive terminal (aluminium matter) is lower than the conductive coefficient of negative terminal (copper), so when both passed through identical electric current, the heat of positive terminal must be higher than negative terminal.Therefore, in order to guarantee the fail safe of battery, guarantee the positive pole place of relative higher temperature is implemented temperature monitoring accurately, temperature sensor just seems extremely important with respect to the definite of installation site of positive terminal.
In the prior art, temperature sensor normally is set in positive terminal.The enforcement of this method can be subjected to the restriction of pole own vol, pole need be increased or strengthen, and has increased volume of battery and weight, thereby causes volume of battery density than reducing.
In addition, owing to be positioned at the positive and negative terminals structural similarity that is connected with positive and negative lug on the cover plate, and without any mark, therefore the phenomenon that in the assembling process of cover plate assembly, occurs the relative position mistake of positive and negative terminals and cover plate easily, this will cause positive and negative lug reversal connection in the battery assembling process, perhaps can't accurately not detect the situation of anodal temperature, cause a series of potential safety hazard then at positive terminal because of temperature sensor.
The battery that CN 2773914 Y disclose a kind of battery cover board assembly and used this cover plate assembly.Wherein, battery cover board assembly comprises metal cover board and the pole with through hole, has locating piece on the pole, it is characterized in that also comprise clamp, described clamp is made by insulating material, have on the clamp with pole on the groove of locating piece form fit, groove floor has through hole, and described pole is fastened on the metal cover board after passing the through hole of through hole in the clamp groove and metal cover board.
In this patent, is the clamp of one owing to employing between metal cover board and the pole has the location with insulation function, be implemented in the pole installation process, automatically pole is fixed, and can be connected with battery pack in the assembling of battery cover board assembly the time, prevent that pole from rotating, and makes the installation of pole more convenient on the one hand, on the other hand, also make the battery cover board assembly sealing after the installation tightr.
But because metal cover board and insulation clamp are absolute construction, both need reach sealing and fixed effect by two sealing rings up and down, so loaded down with trivial details relatively on installation step, the consistency of assembling process is also relative with reliability relatively poor.Simultaneously, can not reach the function of assembling mistake proofing, thereby temperature sensor might be contained in the position of negative terminal and can't realize the positive pole place is carried out the function of temperature monitoring because the shape of positive and negative terminals groove is identical.
Summary of the invention
The purpose of this invention is to provide a kind of battery cover board assembly that can solve assembling complexity, positive terminal and the rigging position possible errors of negative terminal on metal cover board.
Battery cover board assembly provided by the invention comprises positive terminal, negative terminal, metal cover board and the insulation clamp that is fixed on the metal cover board inner surface, the inner of positive terminal and negative terminal has positive terminal locating piece and negative terminal locating piece respectively, have anodal through hole and negative pole through hole on the metal cover board, have anodal draw-in groove and negative pole draw-in groove on the insulation clamp with positive terminal locating piece and negative terminal locating piece form fit, the outer end of positive terminal and negative terminal is passed anodal draw-in groove and negative pole draw-in groove and anodal through hole and negative pole through hole and fastening by securing member respectively, the peripheral surface shape of described positive terminal locating piece and negative terminal locating piece differs from one another, and non-rotatable respectively and be not contained in interchangeably in described anodal draw-in groove and the negative pole draw-in groove.
Be fixed on the lower surface of metal cover board by the clamp that will insulate, can simplify the assembling of battery cover board assembly.Become to differ from one another by peripheral surface shaped design with positive terminal locating piece and negative terminal locating piece, positive terminal locating piece and negative terminal locating piece can only be contained in respectively in described anodal draw-in groove and the negative pole draw-in groove, thereby can realize the phenomenon that prevents that positive terminal and negative terminal are with the wrong location each other like a cork, guarantee that temperature sensor is installed in the positive pole place of battery, battery temperature is accurately monitored, improved the security performance of battery.
In addition, by near the mounting groove of the position setting close positive terminal on the metal cover board with the temperature sensor form fit, temperature sensor is installed in this mounting groove, rather than be installed in the positive terminal, therefore the temperature of temperature sensor with accurate detection positive terminal can be set easily near the positive terminal of battery, and can not increase owing to the size that will increase positive terminal causes volume of battery and weight.
Description of drawings
Fig. 1 is the perspective schematic view before the battery cover board assembly assembling of the present invention.
Fig. 2 is a positive and negative terminals assembling schematic perspective view on the cover board.
Fig. 3 is to use the schematic perspective view of the battery of battery cover board assembly of the present invention.
Embodiment
Describe the present invention with reference to the accompanying drawings.
As shown in the figure, battery cover board assembly provided by the invention, comprise positive terminal 2, negative terminal 3, metal cover board 1 and the insulation clamp 5 that is fixed on metal cover board 1 inner surface, the inner of positive terminal 2 and negative terminal 3 has positive terminal locating piece 21 and negative terminal locating piece 31 respectively, have anodal through hole 11 and negative pole through hole 12 on the metal cover board 1, have anodal draw-in groove 51 and negative pole draw-in groove 52 on the insulation clamp 5 with positive terminal locating piece 21 and negative terminal locating piece 31 form fit, the outer end of positive terminal 2 and negative terminal 3 is passed anodal draw-in groove 51 and negative pole draw-in groove 52 and anodal through hole 11 and negative pole through hole 12 and fastening by securing member respectively, the peripheral surface shape of described positive terminal locating piece 21 and negative terminal locating piece 31 differs from one another, and non-rotatable respectively and be not contained in interchangeably in described anodal draw-in groove 51 and the negative pole draw-in groove 52.
Preferably, have outstanding anodal fixture block 53 and negative pole fixture block 54 on the inner surface of described insulation clamp 5, described anodal draw-in groove 51 and negative pole draw-in groove 52 are made of described anodal fixture block 53 and negative pole fixture block 54 respectively.In the disclosed technical scheme of CN 2773914 Y, described groove (being equivalent to anodal draw-in groove 51 of the present invention and negative pole draw-in groove 52) is by directly forming at insulation clamp internal recessing.In this case, in order to keep effectively and the fixing locating piece on the positive and negative terminals, described insulation clamp must have relatively large thickness, whole actively increase and cost raises that therefore can cause battery.And in this optimal technical scheme of the present invention, described anodal draw-in groove 51 and negative pole draw-in groove 52 can be to constitute by anodal fixture block 53 outstanding on the inner surface of insulation clamp 5 and negative pole fixture block 54, therefore by suitably increasing the thickness of anodal fixture block 53 and negative pole fixture block 54, the thickness of described insulation clamp 5 can be reduced to minimum degree, thereby reduced production cost of cells, reduced volume of battery and weight.
In order further to strengthen the intensity of described anodal fixture block 53 and negative pole fixture block 54, promptly increase the intensity of anodal draw-in groove 51 and negative pole draw-in groove 52, enable to firmly fix positive terminal locating piece 21 and negative terminal locating piece 31, preferably have hollow reinforcement 55 on described anodal fixture block 53 and the negative pole fixture block 54, the present invention to the concrete shape of reinforcement 55 without limits.
Described insulation clamp 5 and anodal fixture block 53 and negative pole fixture block 54 are preferably integral structure, normally by the integrated moulding of injection molded.Be securely fixed on the lower surface of described metal cover board 1 by the clamp 5 that will insulate, can simplify the assembling process of battery cover board assembly of the present invention.Can be fixed on the described metal cover board 1 by any known mode clamp 5 that will insulate.Consider the factor of manufacturing process and production efficiency aspect, preferably will insulate clamp 5 integral molded plastics to the lower surface of described metal cover board 1 by injection molding way.
As described in background technology part of the present invention, because positive terminal 2 that is connected with positive and negative lug and negative terminal 3 structural similarities, and without any mark, therefore the phenomenon that in the assembling process of battery cover board assembly, occurs the relative position mistake of positive terminal 2 and negative terminal 3 and metal cover board 1 easily, this will cause positive and negative lug reversal connection in the battery assembling process, perhaps can't accurately not detect the situation of anodal temperature, cause a series of potential safety hazard then at positive terminal because of temperature sensor.
In order to solve this technical problem, the positive terminal locating piece 21 on described positive terminal 2 and the negative terminal 3 and the peripheral surface shape of negative terminal locating piece 31 differ from one another and are not interchangeable.That is to say, because the peripheral surface shape of positive terminal locating piece 21 and negative terminal locating piece 31 differs from one another, correspondingly, since the shape of described anodal draw-in groove 51 and negative pole draw-in groove 52 respectively with the form fit of positive terminal locating piece 21 and negative terminal locating piece 31, so their shape also will differ from one another.Therefore, in this case, therefore positive terminal locating piece 21 and negative terminal locating piece 31 can only be contained in anodal draw-in groove 51 and the negative pole draw-in groove 52 accordingly, otherwise can't realize normal assembling, can solve positive terminal 2 and negative terminal 3 problem with the wrong location on metal cover board 1 simply.
The positive terminal locating piece 21 on described positive terminal 2 and the negative terminal 3 and the peripheral surface shape of negative terminal locating piece 31 differ from one another and not interchangeable can being achieved by various technological means, and this knows for those of ordinary skills.
For example, the peripheral surface shape of a locating piece in positive terminal locating piece 21 and the negative terminal locating piece 31 can be a regular hexagon, the peripheral surface shape of another locating piece then can be the cutting regular hexagon an angle the tip and form a faceted hexagon.Perhaps, the peripheral surface shape of a locating piece 21 can be the cutting regular hexagon an angle the tip and form the hexagon of a facet 22, the peripheral surface shape of another locating piece then is the tip at relative two angles of cutting regular hexagon and the octangle of the facet 32 that forms.The latter is illustrated in the accompanying drawing 2, but clearly the present invention is not limited to these concrete examples.
Figure 2 shows that the assembling schematic diagram afterwards of battery cover board assembly of the present invention.As shown in the figure, after the outer end of positive terminal 2 and negative terminal 3 is passed anodal through hole 11 and negative pole through hole 12 on described anodal draw-in groove 51 and negative pole draw-in groove 52 and the metal cover board 1 respectively, positive terminal locating piece 21 on positive terminal 2 and the negative terminal 3 and negative terminal locating piece 31 will be contained in respectively in anodal draw-in groove 51 and the negative pole draw-in groove 52, and non-rotatable and be not fixed in wherein interchangeably.In the process that by securing member such as nut 6 outer end of positive terminal 2 and negative terminal 3 is fastened on the metal cover board 1, positive terminal 2 and negative terminal 3 can not rotate, thereby can easily carry out fastening operation.And,, therefore can realize the electric insulation between battery and the metal cover board 1 easily and effectively owing to be provided with described insulation clamp 5 at the inner surface of metal cover board 1.
Preferably, as shown in Figure 3, have the mounting groove 4 that the shape with temperature sensor (not shown) is complementary near the position of positive terminal 2 on described metal cover board 1, temperature sensor is fixedly mounted in this mounting groove 4.
Because temperature sensor is directly installed in the mounting groove 4 on the metal cover board 1, rather than be arranged on the positive terminal 2, therefore the temperature of temperature sensor with accurate detection positive terminal can be set easily near the positive terminal of battery, and can not increase owing to the size that will increase positive terminal 2 causes volume of battery and weight.
The shape of mounting groove 4 and the profile of temperature sensor coupling, thus temperature sensor can be fixedly mounted in this mounting groove 4.For near the temperature the accurate detection positive terminal 2, make temperature sensor as far as possible near positive terminal 2 installations, for example, described mounting groove 4 can be positioned at a certain correct position of 1.5-10 times scope of positive terminal 2 radiuses.
In addition, the also claimed a kind of lithium ion battery of the present invention, this battery comprises housing and battery cover board assembly, this battery cover board assembly uses battery cover board assembly of the present invention.Other member of lithium ion battery adopts known technology, therefore omits its detailed description.
Claims (9)
1, a kind of battery cover board assembly, this battery cover board assembly comprises positive terminal (2), negative terminal (3), metal cover board (1) and be fixed on insulation clamp (5) on metal cover board (1) inner surface, the inner of positive terminal (2) and negative terminal (3) has positive terminal locating piece (21) and negative terminal locating piece (31) respectively, have anodal through hole (11) and negative pole through hole (12) on the metal cover board (1), have anodal draw-in groove (51) and negative pole draw-in groove (52) on the insulation clamp (5) with positive terminal locating piece (21) and negative terminal locating piece (31) form fit, the outer end of positive terminal (2) and negative terminal (3) is passed anodal draw-in groove (51) and negative pole draw-in groove (52) and anodal through hole (11) and negative pole through hole (12) and fastening by securing member respectively, it is characterized in that: the peripheral surface shape of described positive terminal locating piece (21) and negative terminal locating piece (31) differs from one another, and non-rotatable respectively and be not contained in interchangeably in described anodal draw-in groove (51) and the negative pole draw-in groove (52).
2, battery cover board assembly according to claim 1, wherein, have outstanding anodal fixture block (53) and negative pole fixture block (54) on the inner surface of described insulation clamp (5), described anodal draw-in groove (51) and negative pole draw-in groove (52) are made of described anodal fixture block (53) and negative pole fixture block (54) respectively.
3, battery cover board assembly according to claim 2 wherein, has hollow reinforcement (55) on described anodal fixture block (53) and the negative pole fixture block (54).
4, battery cover board assembly according to claim 2, wherein, described insulation clamp (5) and anodal fixture block (53) and negative pole fixture block (54) are integrated.
5, battery cover board assembly according to claim 4, wherein, insulation clamp (5) integral molded plastic that has described anodal fixture block (53) and negative pole fixture block (54) is to the lower surface of described metal cover board (1).
6, battery cover board assembly according to claim 1, wherein, the peripheral surface shape of a locating piece in described positive terminal locating piece (21) and the negative terminal locating piece (31) is a regular hexagon, and the peripheral surface shape of another locating piece is the tip at an angle of cutting regular hexagon and the hexagon that forms.
7, battery cover board assembly according to claim 1, wherein, the peripheral surface shape of a locating piece in described positive terminal locating piece (21) and the negative terminal locating piece (31) is the tip at an angle of cutting regular hexagon and the hexagon that forms, and the peripheral surface shape of another locating piece is the tip at relative two angles of cutting regular hexagon and the octangle that forms.
8, battery cover board assembly according to claim 1 wherein, is gone up position near positive terminal (2) at described metal cover board (1) and is had mounting groove (4) with the form fit of temperature sensor, and temperature sensor is fixedly mounted in this mounting groove (4).
9, a kind of lithium ion battery, this lithium ion battery comprises battery cover board assembly and housing, it is characterized in that, described battery cover board assembly is any described battery cover board assembly in the aforesaid right requirement.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2006101115050A CN100557856C (en) | 2006-08-21 | 2006-08-21 | Battery cover board assembly and use the lithium ion battery of this assembly |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2006101115050A CN100557856C (en) | 2006-08-21 | 2006-08-21 | Battery cover board assembly and use the lithium ion battery of this assembly |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101132059A CN101132059A (en) | 2008-02-27 |
| CN100557856C true CN100557856C (en) | 2009-11-04 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB2006101115050A Active CN100557856C (en) | 2006-08-21 | 2006-08-21 | Battery cover board assembly and use the lithium ion battery of this assembly |
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| CN (1) | CN100557856C (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101964409B (en) * | 2010-09-01 | 2013-03-27 | 朝阳立塬新能源有限公司 | Explosion-proof structure of energy-storing device |
| CN107369789A (en) * | 2017-07-10 | 2017-11-21 | 林州朗坤科技有限公司 | Lithium battery cap board component and its manufacture method |
| CN110126172A (en) * | 2018-02-09 | 2019-08-16 | 比亚迪股份有限公司 | Pallet production method, pallet and battery pack |
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2006
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| CN101132059A (en) | 2008-02-27 |
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