CN204118173U - A kind of battery terminal assembly - Google Patents
A kind of battery terminal assembly Download PDFInfo
- Publication number
- CN204118173U CN204118173U CN201420531895.7U CN201420531895U CN204118173U CN 204118173 U CN204118173 U CN 204118173U CN 201420531895 U CN201420531895 U CN 201420531895U CN 204118173 U CN204118173 U CN 204118173U
- Authority
- CN
- China
- Prior art keywords
- terminal
- battery
- sealant
- installation portion
- battery container
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Withdrawn - After Issue
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Classifications
-
- 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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- Sealing Battery Cases Or Jackets (AREA)
Abstract
The utility model discloses a kind of battery terminal assembly, comprises terminal and battery container, and the madial wall of this terminal is provided with platform, and the corresponding platform of terminal is formed the installation portion of this terminal with lower part; Battery container is provided with an embedding groove, and installation portion coupling is embedded in embedding groove; Being provided with thermal linear expansion coefficient between installation portion and battery container is 1 ~ 100 (10
-6m/mK) sealant.Sealant selected materials has the thermal coefficient of expansion close with terminal, has excellent in metal adhesive performance, can realize lead cover surface good airtight coated; Sealant has excellent heat resistance, also has simultaneously and overlaps consistent temperature thermal expansivity with lead, therefore, it is possible to opposing " thermal shock " prevent terminal problem of " climbing acid ".
Description
Technical field
The utility model relates to the parts of storage battery, is specifically related to a kind of design of lead accumulator terminal, particularly a kind of have prevent battery terminal from climbing acid and having the battery terminal assembly of heat shock resistance function.
Background technology
The terminal of lead accumulator connects the inner and outside key components and parts of lead accumulator.The terminal of lead accumulator is divided into positive and negative two independent terminals: one end (bottom) of terminal is at an electrode (single lattice battery) of inside battery and battery, or battery (termination electrode of internal series-connection) connects; The other end (terminal head portion) of terminal is for battery and outside connection.
Positive and negative terminal in current automobile starting battery normally the hollow circular cylinder with certain taper that is plumbous or lead alloy material machine-shaping, is commonly called as " plumbous cover ".The processing of plumbous cover can adopt corresponding dedicated terminals mould by conventional cast molding or die cast or combination that is cold extrusion shaped or 2 kinds of moulding processs.Using positive and negative lead cover as preset inserts, be embedded on the given position of battery case cap through battery cover injection mo(u)lding.In battery assembling/capping procedure, the pole on the positive and negative electrode bus-bar in battery case can be inserted among corresponding plumbous cover, by heating the head of pole, pole is overlapped top welding be integrated with plumbous.So far, namely plumbous cover becomes complete battery terminal: be connected at inside battery with electrode group in lead cover inside, and plumbous cover is outside connects external equipment.
Lead accumulator in the market, especially automobile start type battery, in the storage life or in use, the problem often occurred is battery terminal surface discolouration blackout, and terminal surfaces corrosion.Reason is owing to occurring caused by " climbing acid " between terminal and battery cover.The corrosion layer on battery terminal surface can have influence on battery and outside switching performance, can produce loose contact, and have influence on the use of battery and the life-span of battery during seriously corroded.
Occur that the terminal main cause of " climbing acid " is that the characteristic of related materials caused: be two kinds of different materials because of lead metal terminal and plastic battery cap, the difference of its conductive coefficient and thermal coefficient of expansion is very large.Plumbous coefficient of linear expansion: 28 (10-6m/m K), battery container plastics: 100 ~ 200 (10-6m/m K), both differences (3.5 ~ 7) doubly.The process of therefore inlaying in injection moulding, in pole and plumbous heat welded process of overlapping, and battery recycles process under temperature alternating condition: as battery is in low temperature (winter) and high temperature (summer, battery is near engine location) environment under frequent cycle use, because the volumetric expansion of bi-material-contraction difference is very large, be easy to cause being separated of battery terminal (plumbous cover) and battery case cap contact surface, occur pore or blind crack at contact-making surface, namely seal goes wrong.The surface tension of the electrolyte-sulfuric acid solution simultaneously used in lead accumulator is very low, namely volatile under normal pressure, if once there is pore or small crackle between the battery terminal inlayed and battery case cap, the acid mist gas of battery electrolyte inside can from inside battery, the pore surperficial along lead cover or fine crack are diffused into terminal outer bottom terminal, namely there is so-called terminal phenomenon of " climbing acid ", and then produce the corrosion of terminal surfaces, even also corrosion is caused to the parts be connected with battery, therefore how to ensure that the good seal between battery terminal and battery case cap is very important.
There is a lot of technology for improving the sealing between battery terminal and battery case cap in the past, more common method has: 1) process multiple tracks ring-shaped groove (see Figure 1A, Figure 1B, Fig. 1 C) at lead cover surface (with cap contact-making surface), increase the path that between battery case cap, contact area and sealing, prolongation " climb acid ", reduce the possibility (United States Patent (USP): 5709967) occurring " climbing acid "; 2) before injection moulding, preliminary treatment is carried out to the surface of inlaying plumbous cover, coating one deck heat reactive resin (United States Patent (USP) 4758482), or with thermoplastic elastomer coating (United States Patent (USP) 4522899), or adopt polyurethane elastomer coat (United States Patent (USP) 5182178); 3) the inner surface design of being overlapped by lead is processed as 2 intercept faces, the bottom design of lead being overlapped inner circle is processed as: during injection moulding, the outside of plumbous cover is simultaneously all coated by battery case cap material with inner bottom, to extend the path (United States Patent (USP) 2011/0014513) of " climbing acid ".
Although technology in the past contributes to " the climbing acid " of improving lead-acid battery terminal, these technology be not sufficient to the generation avoiding " climbing acid " phenomenon completely.Simultaneously institute adopts and lead is overlapped to surperficial processing method is too loaded down with trivial details, face coat needs to solidify length consuming time, and actual effect is also very limited, another main cause: even if adopt the sealing means of outer cladding (as United States Patent (USP) 2011/0014513) in plumbous cover bottom, the impact that can not keep from heat after impacting, resist the impact that lead terminal and battery case cap material cause at volume expanded by heating and the difference of shrinking completely: though injection moulding (lead overlaps and inlays) afterwards the lead contact-making surface overlapped between cap be combined intact, but follow-up thermal shock, as: lead terminal post is overlapped welding with lead with the plumbous thermal welding process need overlapped and is integrated by pole, on the fusing point (330 degree) maintaining the temperature at lead alloy, and battery case cap normally polypropylene, or polypropene blended material, or ABS material: its fusing point is all lower than 160 degree).If plumbous cover chilling temperature controls bad when overheated (overall) during welding, can impact the faying face of lead cover and cap.Further analysis: if if the difference both after being again heated in volumetric expansion-contraction is not effectively suppressed, inherently have influence on the surface conjunction power of two kinds of unlike materials, namely have influence on the sealing property of terminal.The decline of this adhesion, under the environment of hot alternation: be included in frequent cycle and use (as opening-stop battery functi on), can cause constantly weakening of sealing between battery container and battery terminal, these factors all can cause finally occurring that terminal " climbs acid ".
Existing technology has employing epoxy coating (Epoxy to the surface preparation of lead cover, United States Patent (USP) 4758482), also have and adopt polyisobutene coating (PIB, United States Patent (USP) 5709967) and polyurethane elastomer coat (PU, United States Patent (USP) 5182178) etc.But contrast with the thermal coefficient of expansion (28) of lead terminal material, current all coatings (Epoxy (45-65), PIB (130), PU (57.6)) thermal coefficient of expansion all to exceed more than a times of lead material.Therefore thermal shock as above is being subject to, or under the effect of hot alternation, these coatings overlap with lead between faying face also can produce because of volumetric expansion-not mating of contraction and be separated, in battery, acid mist also can be overflowed along the micro gap on lead cover surface gradually outside battery, occurs " climbing acid ".Thus, no matter prior art is adopt the structural design improving terminal to increase the method in the path of " climbing acid "; Or adopt the mode of plumbous cover surface coated treatment, all can not resist " thermal shock " impact on terminal-cap faying face, avoid " climbing acid " phenomenon to produce.
Utility model content
The purpose of this utility model is not enough for prior art and provide battery terminal assembly, improves faying face sealing property between battery terminal and battery container, can resist " thermal shock " and prevent terminal problem of " climbing acid ".
In order to reach above-mentioned purpose, solution of the present utility model is:
A kind of battery terminal assembly, comprise terminal and battery container, the madial wall of this terminal is provided with platform down, and the corresponding described platform of described terminal is formed the installation portion of this terminal with lower part; Described battery container is provided with an embedding groove, and described installation portion coupling is embedded in described embedding groove and the step surface of this installation portion, medial surface, bottom face and lateral surface form the sealing surface of this installation portion; Between described installation portion and battery container, corresponding described sealing surface portion is arranged with thermal linear expansion coefficient is 1 ~ 100 (10
-6m/m K) sealant.
Described sealant material is high temperature resistant linear aromatic race macromolecular compound, or primarily of high temperature resistant linear aromatic race macromolecular compound and bisphenol A epoxide resin or the ring-like epoxy resins of glyceramine formulated; Described high temperature resistant linear aromatic race macromolecular compound is polyether-ether-ketone (PEEK), polyamidoimide (PAI), Polyetherimide (PEI), Ju Ben And imidazoles (PBl), the one in polysilane based polyurethanes.
Be added with additive in the material of described sealant, this additive is carborundum and/or silicon dioxide.
Described sealant thermal linear expansion coefficient is 2.8 ~ 45 (10
-6m/m K).
The thickness of described sealant is 0.8 ~ 1.2mm.
After adopting such scheme, the utility model is relative to the beneficial effect of prior art: terminal (plumbous cover) inside of this novel battery terminal assemblies arranges platform, can from the installation portion of both sides, the bottom clad terminal of terminal to realize battery container (cap).Sealant is formed between battery container and the mutual covered section of terminal, sealing layer avoids terminal and directly directly contacts with battery case materials, and forming two-layer sealing, ground floor sealing is that terminal contacts with sealant, and second layer sealing is that sealant contacts with battery container.Sealant selected materials has the thermal coefficient of expansion close with terminal, has excellent in metal adhesive performance, can realize lead cover surface good airtight coated; Sealant has excellent heat resistance, also has simultaneously and overlaps consistent temperature thermal expansivity with lead, therefore can resist battery completely in the course of processing and thermal shock in use, avoids acid mist to occur " climbing acid " along plumbous cover surface.
Accompanying drawing explanation
Figure 1A is the sectional view schematic diagram of the automobile batteries terminal (plumbous cover) of traditional structure;
Figure 1B is the interface schematic diagram of orthodox car battery terminal;
Fig. 1 C is the localized interface schematic diagram after plumbous cover is embedded in battery case cap;
Fig. 2 A is the sectional view schematic diagram of the automobile batteries terminal (plumbous cover) of this novel proposition;
Fig. 2 B is the interface schematic diagram of this novel terminal after coating process:
Fig. 2 C is the interface schematic diagram of this novel terminal assemblies after injection moulding.
Label declaration
Terminal 1 platform 11
Groove 12 sealant 2
Battery container 3 embedding groove 31
Embodiment
Below in conjunction with the drawings and specific embodiments, this case is described in further detail.
This case relates to a kind of battery terminal assembly, as seen in figs. 2a-2c, comprises terminal 1, sealant 2 and battery container 3.The endoporus of terminal 1 has certain tapering, and its madial wall is provided with platform 11 down, and this platform 11 can arrange more than one or one.The corresponding platform 11 of terminal 1 and formed the installation portion of this terminal 1 with lower part.Battery container 3 is provided with an embedding groove 31, and the installation portion coupling of terminal 1 is embedded in embedding groove 31 (as shown in Figure 2 C), and the madial wall of embedding groove 31 is adaptive to being located at described platform 11 place.The installation portion of embedding groove 31 pairs of terminals 1 of battery container 3 carries out interior outer cladding, and the surface of coated mistake forms the sealing surface of installation portion, includes the step surface of installation portion, medial surface, bottom face and lateral surface.Sealant 2 is located between terminal 1 and battery container 3 along described sealing surface part sealing.
The material selection criteria of described sealant 2 is have and plumbous or that lead alloy is close thermal linear expansion coefficient: 1 ~ 100 (10
-6m/m K), better scope is 2 ~ 60 (10
-6m/m K), optimum range is 2.8 ~ 45 (10
-6m/m K).Further restriction can be high-temperature-resistant thermoplastic (or thermosetting) resin, and serviceability temperature scope is wide, Long-Time Service temperature about 200 degree, short-term job temperature about 300 DEG C; Pliability, excellent corrosion resistance, can mix crosslinking curing mutually with epoxies or polyurethane based resin, excellent with metal adhesive.
Specifically, sealant 2 material is that (high temperature resistant scope is 100-230 DEG C to high temperature resistant linear aromatic race macromolecular compound, short-term heatproof peak is 250 DEG C), or by high temperature resistant linear aromatic race macromolecular compound and bisphenol A epoxide resin or the ring-like epoxy resins of glyceramine formulated, wherein high temperature resistant linear aromatic race macromolecular compound is basic material, bisphenol A epoxide resin or the ring-like epoxy resins of glyceramine are blending modified material, can obtain one after preparation can resistant to elevated temperatures seal coating, there is excellent corrosion-resistant (acidproof) performance and good with metal adhesive, can heatproof 300 degree (short-term) after solidification, can under 200 degree Long-Time Service.Sealant 2 serves the function of special sealing, heat insulation, heat shock resistance and hot alternation.
Described high temperature resistant linear aromatic race macromolecular compound is polyether-ether-ketone (PEEK), polyamidoimide (PAI), Polyetherimide (PEI) Ju Ben And imidazoles (PBl), one in polysilane based polyurethanes, or described various respective performed polymer is that Main Ingredients and Appearance is formed.Described various sealant material has and overlaps close thermal coefficient of expansion with lead, and the thermal coefficient of expansion of plumbous cover is 28 (10
-6m/m K), the thermal coefficient of expansion of polyether-ether-ketone (PEEK) is 25-50 (10
-6m/m K), the thermal coefficient of expansion of polyamidoimide (PAI) is 25-30 (10
-6m/m K), the thermal coefficient of expansion of Polyetherimide (PEI) is 45 (10
-6m/m K), the thermal coefficient of expansion of Ju Ben And imidazoles (PBl) is 25-50 (10
-6m/m K), the thermal coefficient of expansion of polysilane based polyurethanes is 57 (10
-6m/m K).Sealant 2 and battery container 3 are equivalent to first, second sealant of terminal 1, and both being somebody's turn to do, character is close, and can be thermoplastic, also can be thermosets.
Preferably, can also be added with the additive accounting for sealant 2 material 1 ~ 30% weight ratio in the material of described sealant 2, this additive is carborundum and/or silicon dioxide.This additive be used for reduce coating be heated after volume thermal expansion.
Preferably, the thickness of described sealant 2 is: 0.2 ~ 5mm, and preferred thickness is: 0.5 ~ 3mm, and optimum thickness is: 0.8 ~ 1.2mm.
The foregoing is only preferred embodiment of the present utility model, all equalizations done with the utility model right change and modify, and all should belong to the scope of the utility model claim.
Claims (4)
1. a battery terminal assembly, comprises terminal and battery container, it is characterized in that: the madial wall of this terminal is provided with platform down, and the corresponding described platform of described terminal is formed the installation portion of this terminal with lower part; Described battery container is provided with an embedding groove, and described installation portion coupling is embedded in described embedding groove and the step surface of this installation portion, medial surface, bottom face and lateral surface form the sealing surface of this installation portion; Between described installation portion and battery container, corresponding described sealing surface portion is arranged with thermal linear expansion coefficient is 1 ~ 100 (10
-6m/m K) sealant.
2. a kind of battery terminal assembly as claimed in claim 1, is characterized in that: described sealant material is high temperature resistant linear aromatic race macromolecular compound; Described high temperature resistant linear aromatic race macromolecular compound is polyether-ether-ketone (PEEK), polyamidoimide (PAI), Polyetherimide (PEI), Ju Ben And imidazoles (PBl), the one in polysilane based polyurethanes.
3. a kind of battery terminal assembly as claimed in claim 1, is characterized in that: described sealant thermal linear expansion coefficient is 2.8 ~ 45 (10
-6m/m K).
4. a kind of battery terminal assembly as claimed in claim 1, is characterized in that: the thickness of described sealant is 0.8 ~ 1.2mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420531895.7U CN204118173U (en) | 2014-09-16 | 2014-09-16 | A kind of battery terminal assembly |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420531895.7U CN204118173U (en) | 2014-09-16 | 2014-09-16 | A kind of battery terminal assembly |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204118173U true CN204118173U (en) | 2015-01-21 |
Family
ID=52335457
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420531895.7U Withdrawn - After Issue CN204118173U (en) | 2014-09-16 | 2014-09-16 | A kind of battery terminal assembly |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204118173U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104282871A (en) * | 2014-09-16 | 2015-01-14 | 泉州市一鸣交通电器有限公司 | Battery terminal component and assembling process thereof |
-
2014
- 2014-09-16 CN CN201420531895.7U patent/CN204118173U/en not_active Withdrawn - After Issue
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104282871A (en) * | 2014-09-16 | 2015-01-14 | 泉州市一鸣交通电器有限公司 | Battery terminal component and assembling process thereof |
| CN104282871B (en) * | 2014-09-16 | 2016-08-17 | 泉州市一鸣交通电器有限公司 | A kind of battery terminal assembly and packaging technology thereof |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20150121 Effective date of abandoning: 20160817 |
|
| AV01 | Patent right actively abandoned |
Granted publication date: 20150121 Effective date of abandoning: 20160817 |
|
| C25 | Abandonment of patent right or utility model to avoid double patenting |