CN201975445U - Anode end assembly for lithium-iron disulfide battery - Google Patents
Anode end assembly for lithium-iron disulfide battery Download PDFInfo
- Publication number
- CN201975445U CN201975445U CN2011200303824U CN201120030382U CN201975445U CN 201975445 U CN201975445 U CN 201975445U CN 2011200303824 U CN2011200303824 U CN 2011200303824U CN 201120030382 U CN201120030382 U CN 201120030382U CN 201975445 U CN201975445 U CN 201975445U
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- China
- Prior art keywords
- battery
- positive terminal
- terminal assembly
- seal plate
- end cap
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- 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.)
- 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
Abstract
The utility model provides an anode end assembly for a lithium-iron disulfide battery. The anode terminal end comprises an anode end cap, a battery sealing plate, a synthetic flake thermistor clamped between the anode end cap and the battery sealing plate and an insulating sealing sleeve for covering the anode end cap, the battery sealing plate and the synthetic flake thermistor, wherein the anode end cap is provided with at least one vent hole; the surface of a bottom plate at the side of the battery sealing plate, which faces the anode end cap, is provided with at least one indentation for ensuring the bottom plate to be broken along the indentation when the pressure of gas in the lithium-iron disulfide battery is increased to a certain degree; the middle part of the synthetic flake thermistor is provided with a through hole; and the middle part of the bottom wall of the insulating sealing sleeve is provided with a through hole for ensuring the indentation to be exposed. The anode end assembly can crack when the pressure of the gas in the battery is increased to a certain level so as to exhaust redundant gas.
Description
Technical field
The utility model relates to the disposable lithium-battery field, and more specifically, the utility model relates to a kind of positive terminal assembly that is used for battery of lithium-iron disulphide.
Background technology
At battery industry, lithium battery because have energy density height, voltage height, advantage such as operating temperature range is wide, the life-span is long, the people's that have been subjected to getting more and more concern and attention.In more than ten years in the past, lithium battery once having occupied leading position in (not chargeable) and secondary (chargeable) Battery Market, is widely used in the portable electric appts such as mobile phone, notebook computer and digital camera.
In lithium battery, conventional battery of lithium-iron disulphide is with ferrous disulfide (FeS
2) be that positive active material, lithium metal (Li) they are the primary cell of electrolyte for negative electrode active material and with the organic electrolyte.Therefore the voltage of this primary cell can reach 1.5V, can substitute alkaline battery commonly used now and uses as the portable energy source of ordinary consumption electronic equipment.In addition, this primary cell also has advantages such as specific energy is big, capacity is high, operating temperature range is wide, the storage time is long, has interchangeability with widely used alkaline primary battery in the market, so its high-power battery as a new generation, just more and more be subjected to people's welcome, market prospects are boundless.
Because the development of battery of lithium-iron disulphide is very fast, therefore the crowd of use more and more widely, the situation that battery of lithium-iron disulphide is misapplied or abused usually occurs.For example, when using a plurality of battery of lithium-iron disulphide simultaneously, if one of them is not correctly installed, other batteries will be to this battery charge so.Because battery of lithium-iron disulphide is not a rechargeable battery, therefore under situation about being recharged, be easy to take place polarization phenomena.When the polarizing voltage of battery greater than battery in during the decomposition voltage of organic electrolyte, organic electrolyte will be decomposed into gas; Be seal cavity owing to inside battery again, and the space is very little, so the pressure of inside battery will increase.When the pressure in the battery was increased to a certain degree again less than release, battery case will break.Further, because the positive active material of battery of lithium-iron disulphide is a ferrous disulfide, having fe in discharge or charging process generates, the battery that breaks can cause the lithium metal of these iron simple substance and organic electrolyte, negative pole and be that the barrier film of material mixes and is exposed in the air and then may causes second-time burning or blast with PP or PE, influences user's safety.
Therefore, in order to strengthen battery of lithium-iron disulphide fail safe in use, reduce or eliminate the potential safety hazard that causes owing to improper use, further improve the security performance of battery of lithium-iron disulphide, need study with can be during to predeterminated level the explosion-proof performance of battery of lithium-iron disulphide with unnecessary gas discharge when the pressure rises in the battery.
The utility model content
Introduced the notion of a series of reduced forms in the utility model content part, this will further describe in the embodiment part.Utility model content part of the present utility model does not also mean that key feature and the essential features that will attempt to limit technical scheme required for protection, does not more mean that the protection range of attempting to determine technical scheme required for protection.
At above-mentioned problems of the prior art, the utility model provides a kind of positive terminal assembly that is used for battery of lithium-iron disulphide, described positive terminal assembly comprises anodal end cap, battery seal plate successively and is clipped in synthetic thin slice thermistor between described anodal end cap and the battery seal plate, and the insulated enclosure cover that coats described anodal end cap, battery seal plate and synthetic thin slice thermistor, wherein:
Described anodal end cap is provided with at least one steam vent;
Described battery seal plate has at least one indentation on the backplate surface of described anodal end cap one side, break along described indentation to make described base plate when the gas atmosphere in the described battery of lithium-iron disulphide is increased to a certain degree;
The middle part of described synthetic thin slice thermistor is provided with through hole; With
The diapire middle part of described insulated enclosure cover is provided with through hole to expose described indentation.
Further, the material of described battery seal plate is a magnadure.
Further, the Vickers hardness of described battery seal plate is 75 ~ 90kgf/mm
2
Further, the thickness of described battery seal plate is 0.2 ~ 0.5mm.
Further, have three indentations that are intersected in common ground on the described backplate surface of described battery seal plate.
Further, the angle between arbitrarily adjacent two indentations is 90 ~ 145 degree in described three indentations.
Further, described common ground departs from the center of described base plate.
Further, described positive terminal assembly also comprises reinforced sheet, and described reinforced sheet is positioned at described battery seal plate and is buckled by the side plate bag of described battery seal plate.
Further, the overtemperature protection temperature of described synthetic thin slice thermistor is 70 ~ 100 degrees centigrade.
Further, the material of described insulated enclosure cover is a nylon.
In sum, but positive terminal assembly of the present utility model has reliable apparatus for breaking, it breaks when can the gas atmosphere in battery rising to certain level, thereby unnecessary gas can be discharged, and therefore strengthen battery of lithium-iron disulphide fail safe in use; Positive terminal assembly of the present utility model also has exhaust apparatus, and it can arrive outside batteries with the unnecessary gas release in the battery effectively, with the pressure of reduction inside battery, and avoids battery case to break; Positive terminal assembly of the present utility model also comprises synthetic thin slice thermistor, so that the Additional Protection of avoiding short circuit or unusual high current drain to be provided.
Description of drawings
Following accompanying drawing of the present utility model is used to understand the utility model at this as a part of the present utility model.Embodiment of the present utility model and description thereof have been shown in the accompanying drawing, have been used for explaining principle of the present utility model.In the accompanying drawings,
Figure 1 shows that schematic diagram according to the positive terminal assembly of preferred implementation of the present utility model;
Figure 2 shows that schematic diagram according to the anodal end cap of preferred implementation of the present utility model;
Fig. 3 a is depicted as the schematic top plan view according to the battery seal plate of preferred implementation of the present utility model;
Fig. 3 b is depicted as the cross-sectional side schematic diagram according to the battery seal plate of preferred implementation of the present utility model;
Fig. 3 c is depicted as the cross-sectional side schematic diagram according to the battery seal plate of another preferred implementation of the present utility model;
Fig. 3 d is depicted as the sectional view according to the indentation of preferred implementation of the present utility model;
Fig. 4 a is depicted as the vertical view according to the synthetic thin slice thermistor of preferred implementation of the present utility model;
Fig. 4 b is depicted as the side sectional view according to the synthetic thin slice thermistor of preferred implementation of the present utility model;
Fig. 5 a is depicted as the vertical view according to the insulated enclosure cover of preferred implementation of the present utility model;
Fig. 5 b is depicted as the side sectional view according to the insulated enclosure cover of preferred implementation of the present utility model.
Embodiment
In the following description, having provided a large amount of concrete details understands the utility model more completely so that provide.Yet, it will be apparent to one skilled in the art that the utility model can need not one or more these details and implemented.In other example,, be not described for technical characterictics more well known in the art for fear of obscuring with the utility model.
In order thoroughly to understand the utility model, detailed structure will be proposed, in following description so that explanation the utility model.Obviously, execution of the present utility model is not limited to the specific details that those skilled in the art has the knack of.Preferred embodiment of the present utility model is described in detail as follows, yet except these were described in detail, the utility model can also have other execution modes.
Below with reference to Fig. 1 to 5b, the concrete structure according to the positive terminal assembly of preferred implementation of the present utility model is elaborated.
As Fig. 1, positive terminal assembly 10 comprises anodal end cap 100, battery seal plate 200, be clipped in the synthetic thin slice thermistor 300 between anodal end cap 100 and the battery seal plate 200, and the insulated enclosure of clad anode end cap 100, battery seal plate 200 and synthetic thin slice thermistor 300 cover 400, this insulated enclosure cover 400 can seal above-mentioned three.
In more detail as shown in Figure 2, anodal end cap 100 comprises the tubular cap body 101 of hollow, and cap body 101 has an openend 102, and this openend 102 is the brim of a hat shape to the extension of the outside of cap body 101.In one embodiment, cap body 101 also has a blind end 103 relative with openend 102, and this blind end 103 forms platform usually.In another embodiment, can also have at least one steam vent 104 on the cap body 101 so that the unnecessary gas release in the battery is arrived outside batteries.In one embodiment, along cap body 101 even 4 steam vents that distribute.More specifically, because the utility model is mainly used in battery of lithium-iron disulphide, therefore the air pressure in the battery (being equivalent to 20 to 80 atmospheric pressure) greatly when the battery seal plate 200 in the battery is opened, and when exhaust, also can produce gas, the size of steam vent 104 cause the air pressure in the battery bigger, so should be provided with relatively largely to allow gas to discharge; In addition, the average diameter of the ferrous disulfide particle in the battery is about 0.01 ~ 0.03 millimeter usually, therefore stop up steam vent and make it ineffective for fear of the ferrous disulfide particle, the size of steam vent 104 also should be provided with relatively largely, and at least should be greater than the size of the ferrous disulfide particle of this used in battery.For example, the projected area of steam vent 104 on cap body 101 is 0.2 ~ 7mm
2, be preferably 0.7 ~ 3mm
2Further, the shape of steam vent 104 does not have particular restriction, but is preferably circle, ellipse or the water droplet shape that does not have corner angle.
Shown in Fig. 3 a ~ 3d, the shape of battery seal plate 200 can be plate-like in more detail, for example, has circular base plate 201 and from the peripheral upwardly extending side plate 202 of base plate 201.In one embodiment, battery seal plate 200 can be configured to base plate 201 from side plate 202 stepped inwardly recessed (shown in Fig. 3 b).
Preferably, battery seal plate 200 has at least one indentation 203 on the surface of the base plate 201 of anodal end cap 100 1 sides, this indentation 203 can have different structures and pattern, for example straight line pattern or curve pattern, perhaps also can be segmentation or continuous.In one embodiment, indentation 203 have be arranged at base plate 201 towards the lip-deep openend 203a of anodal end cap 100 with near but do not contact closed bottom end 203b that the surface of anodal end cap 100 of deviating from of base plate 201 is provided with and therebetween sidewall 203c and 203d, thereby on base plate 201, form rupturable vulnerable area 204(in more detail shown in Fig. 3 d), the size of this vulnerable area 204 is wanted to guarantee when the interior gas atmosphere of battery increases to a certain degree base plate 201 to be broken along indentation 203.For example common this vulnerable area 204 has the thickness (the x direction shown in Fig. 3 d) of 0.2 ~ 0.3mm, but it will be appreciated by persons skilled in the art that the explosion-proof degree that can also reach according to the different instructions for uses and the expectation of battery selects rational numerical in being different from the scope of above-mentioned numerical value.Sidewall 203c and 203d can be vertical or tilt, but preferably, indentation 203 has intilted sidewall 203c and 203d, so that indentation is " V " font generally, in this case, the angle between " V " font indentation two side 203c and the 203d preferably is set to 60 ~ 90 degree.
In a preferred embodiment of the present utility model, base plate 201 is provided with three linear pattern indentations that are intersected in common ground 205, and the angle between two arbitrarily adjacent indentations is 90 ~ 145 degree, is preferably 120 degree.The vulnerable area that corresponding residual metallic is all arranged below every indentation.Gas atmosphere in battery runs up to a certain degree just can break, thereby plays exhaust and explosion-proof effect.Preferably, common ground 205 departs from the center of base plate 201, directly aims at the weld zone avoiding.Obtain the thickness that desirable metal fracture pressure depends primarily on the vulnerable area 204 below the indentation.Therefore, only need regulate to realize different fracture pressures the degree of depth of indentation.Preferably, the explosion-proof pressure of indentation 203 is set to 350 ~ 450PSI.
In addition,, therefore must select to have the material of the metal of enough tolerances and malleability, be preferably aluminum alloy materials as the battery seal plate because positive terminal assembly 10 of the present utility model is mainly used in battery of lithium-iron disulphide.More preferably, select the material of almag, and magnesium accounts for 2 ~ 4%(mass percent as the battery seal plate), 3%(mass percent for example); Aluminium accounts for 96 ~ 98%(mass percent), 97%(mass percent for example).And further preferably, the Vickers hardness of this battery seal plate 200 (HV) value is 75 ~ 90kgf/mm
2, for example, 80kgf/mm
2, 85kgf/mm
2Deng; The thickness of this battery seal plate 200 between 0.2 ~ 0.5mm, 0.3mm for example, 0.4mm etc.
Preferably, this positive terminal assembly 10 also comprises reinforced sheet 206, and this reinforced sheet 206 is arranged in the battery seal plate 200 and by side plate 202 bags and detains to be fixed in the battery seal plate 200.
As shown in Figs. 4a and 4b in more detail, synthetic thin slice thermistor 300 can also be set between anodal end cap 100 and battery seal plate 200.Usually, synthetic thin slice thermistor 300 has the thin slice of through hole 301 for the middle part.When touching heat, it can increase the resistance that passes through sharp, thereby avoids battery to discharge under current drain is higher than predetermined safety level, thereby prevents the overheated power supply of battery and the blast that produces.Preferably, the overtemperature protection temperature of this synthetic thin slice thermistor 300 is set to 70 ~ 100 degrees centigrade.
In more detail referring to Fig. 5 a and 5b.Insulated enclosure cover 400 comprises diapire 401 and from the peripheral upwardly extending sidewall 402 of diapire 401.The middle part of diapire 401 is provided with through hole to expose indentation 203, and the shape of insulated enclosure cover is configured to can clad anode end cap 100, battery seal plate 200 and synthetic thin slice thermistor 300, thereby and make anodal end cap 100, battery seal plate 200 and synthetic thin slice thermistor 300 be in the insulation that guarantees within the sidewall 402 of insulated enclosure cover 400 between positive pole and the negative pole, and can under the compressing of negative pole metal shell, play sealing function.The material of this insulated enclosure cover 400 is preferably elasticity durable plastic material material, more preferably is nylon.Preferably, insulated enclosure overlaps 400 belows can also be provided with the insulating washer (not shown), and it is used for protecting the coiling electric machine assembly of battery container and with its clamping in position.
In sum, but positive terminal assembly of the present utility model has reliable apparatus for breaking, it breaks when can the gas pressure in battery rising to predeterminated level, thereby unnecessary gas can be discharged, and therefore strengthen battery of lithium-iron disulphide fail safe in use; Positive terminal assembly of the present utility model also has exhaust apparatus, and it can arrive outside batteries with the unnecessary gas release in the battery effectively, with the pressure of reduction inside battery, and avoids battery case to break; Positive terminal assembly of the present utility model also comprises synthetic thin slice thermistor, so that the Additional Protection of avoiding short circuit or unusual high current drain to be provided.
The utility model is illustrated by the foregoing description, but should be understood that, the foregoing description just is used for for example and illustrative purposes, but not is intended to the utility model is limited in the described scope of embodiments.It will be understood by those skilled in the art that in addition; the utility model is not limited to the foregoing description; can also make more kinds of variants and modifications according to instruction of the present utility model, these variants and modifications all drop in the utility model scope required for protection.Protection range of the present utility model is defined by the appended claims and equivalent scope thereof.
Claims (10)
1. positive terminal assembly that is used for battery of lithium-iron disulphide, it is characterized in that, described positive terminal assembly comprise anodal end cap, battery seal plate successively and be clipped in described anodal end cap and described battery seal plate between synthetic thin slice thermistor, and the insulated enclosure cover that coats described anodal end cap, described battery seal plate and described synthetic thin slice thermistor, wherein:
Described anodal end cap is provided with at least one steam vent;
Described battery seal plate has at least one indentation on the backplate surface of described anodal end cap one side, break along described indentation to make described base plate when the gas atmosphere in the described battery of lithium-iron disulphide is increased to a certain degree;
The middle part of described synthetic thin slice thermistor is provided with through hole; With
The diapire middle part of described insulated enclosure cover is provided with through hole to expose described indentation.
2. positive terminal assembly according to claim 1 is characterized in that, the material of described battery seal plate is a magnadure.
3. positive terminal assembly according to claim 2 is characterized in that, the Vickers hardness of described battery seal plate is 75 ~ 90kgf/mm
2
4. positive terminal assembly according to claim 1 is characterized in that, the thickness of described battery seal plate is 0.2 ~ 0.5mm.
5. positive terminal assembly according to claim 1 is characterized in that, has three indentations that are intersected in common ground on the described backplate surface of described battery seal plate.
6. positive terminal assembly according to claim 5 is characterized in that, the angle in described three indentations between arbitrarily adjacent two indentations is 90 ~ 145 degree.
7. positive terminal assembly according to claim 5 is characterized in that described common ground departs from the center of described base plate.
8. positive terminal assembly according to claim 1 is characterized in that, described positive terminal assembly also comprises reinforced sheet, and described reinforced sheet is positioned at described battery seal plate and is buckled by the side plate bag of described battery seal plate.
9. positive terminal assembly according to claim 1 is characterized in that, the overtemperature protection temperature of described synthetic thin slice thermistor is 70 ~ 100 degrees centigrade.
10. positive terminal assembly according to claim 1 is characterized in that, the material of described insulated enclosure cover is a nylon.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011200303824U CN201975445U (en) | 2011-01-28 | 2011-01-28 | Anode end assembly for lithium-iron disulfide battery |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011200303824U CN201975445U (en) | 2011-01-28 | 2011-01-28 | Anode end assembly for lithium-iron disulfide battery |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201975445U true CN201975445U (en) | 2011-09-14 |
Family
ID=44580543
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011200303824U Expired - Lifetime CN201975445U (en) | 2011-01-28 | 2011-01-28 | Anode end assembly for lithium-iron disulfide battery |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201975445U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104956516A (en) * | 2013-01-31 | 2015-09-30 | 三洋电机株式会社 | Sealed battery |
-
2011
- 2011-01-28 CN CN2011200303824U patent/CN201975445U/en not_active Expired - Lifetime
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104956516A (en) * | 2013-01-31 | 2015-09-30 | 三洋电机株式会社 | Sealed battery |
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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 | ||
| CX01 | Expiry of patent term |
Granted publication date: 20110914 |