CN205508894U - Secondary cell top cap and secondary cell thereof - Google Patents
Secondary cell top cap and secondary cell thereof Download PDFInfo
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- CN205508894U CN205508894U CN201620336033.8U CN201620336033U CN205508894U CN 205508894 U CN205508894 U CN 205508894U CN 201620336033 U CN201620336033 U CN 201620336033U CN 205508894 U CN205508894 U CN 205508894U
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- Prior art keywords
- pole
- secondary cell
- plate
- top cover
- resistive coating
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02E60/10—Energy storage using batteries
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- Connection Of Batteries Or Terminals (AREA)
Abstract
The utility model relates to an energy storage device field especially relates to a secondary cell top cap and secondary cell thereof, including first ploe post, second ploe post, top cap piece and resistive coating, and second ploe post and top cap piece electrical insulation, be provided with the perforation on the top cap piece, the first ploe post passes perforate, and with the top cap piece is fixed, resistive coating directly coats the first ploe post and/or on the top cap piece, resistive coating is located the first ploe post and between the top cap piece, and simultaneously with the first ploe post and the top cap piece is realized the electricity and is connected. The secondary cell top cap that this application provided replaces electric block through set up resistive coating between first ploe post and top cap piece completely, can reduce the height of top cap by a wide margin, carries high energy density.
Description
Technical field
The application relates to energy storage device field, particularly relates to a kind of secondary cell top cover and secondary electricity thereof
Pond.
Background technology
Being different from one-shot battery, secondary cell can be by recharge and electric discharge.Low capacity secondary cell
Can be used for such as mobile phone, portable computer and the miniaturized electronics of camcorder.Greatly
Capacity secondary battery can be used as driving the power supply of the motor of such as motor vehicle driven by mixed power.
Owing to secondary cell is by recharge and electric discharge, can excessively produce heat in housing, and be electrolysed
Matter solution may decompose.The generation of this heat or the decomposition of electrolyte solution can increase the interior of secondary cell
Portion's pressure.The increase of internal pressure may result in secondary cell and catches fire and explode.In order to prevent being pressed by inside
What the increase of power caused catches fire and explodes, and can arrange external short circuit unit in the outside of housing.But work as
When the internal pressure of secondary cell increases, external short circuit unit is by the anelectrode of electrode assemblie and negative electrode
With the external short circuit of secondary cell, thus reduce the charged state of electrode assemblie.But, due to outside
Short-circuit resistance value is less, and external short circuit electric current can exceedingly breakdown electrode assembly.Accordingly, it is possible at electricity
Pole assembly causes safety problem.
In order to increase the resistance value of external short circuit unit, typically can be at pole and coping plate in correlation technique
Between resistance bolck is set.But the height that this mode adds secondary cell top cover makes battery overall
Highly increasing, energy density is low.
Utility model content
This application provides a kind of secondary cell top cover, it is possible to solve the problems referred to above.
A kind of secondary cell top cover that the application provides, including the first pole, the second pole, coping plate
And resistive coating,
Second pole and coping plate electric insulation,
Be provided with perforation on described coping plate, described first pole pass described perforation, and with described top
Cover plate is fixed, and described resistive coating is applied directly on described first pole and/or described coping plate, institute
State resistive coating between described first pole and described coping plate, and simultaneously with described first pole
Post and described coping plate realize electrical connection.
Preferably, described first pole includes pole body and pole plate,
Described pole plate is buckled in the upper surface of described coping plate, and described pole body is through described perforation also
It is connected with described pole plate.
Preferably, described resistive coating is arranged between described pole plate and described coping plate and/or described
Between pole body and described coping plate.
Preferably, also include that insulation division, described perforation are lower big little counterbore, described insulation position
In described counterbore.
Preferably, described resistive coating is nickel dam, teflon layer, tin layers, fe-zn alloy layer and chromium
One or more in Ceng.
Preferably, connecting plate and rotating sheet are also included；Described connecting plate is electrically connected to described second pole；
Described rotating sheet electrically connects with described coping plate, when the internal pressure of secondary cell exceedes reference pressure
Rotating sheet overturns and contacts described connecting plate, to realize short by described first pole and described second pole
Road.
Preferably, the thickness of described resistive coating is 150～400 μm.
Preferably, the thickness of described resistive coating is 200～300 μm.
Present invention also provides a kind of secondary cell, described secondary cell is provided with aforementioned secondary cell top
Lid.
The technical scheme that the application provides can reach following beneficial effect:
Secondary cell top cover provided herein is by arranging between the first pole and coping plate
Resistive coating complete substitutional resistance block, it is possible to the height of top cover is greatly decreased, improves energy density.
It should be appreciated that it is only exemplary that above general description and details hereinafter describe, and
The application can not be limited.
Accompanying drawing explanation
The overall structure schematic diagram of the secondary cell top cover that Fig. 1 is provided by the embodiment of the present application；
The partial enlargement of the part A of a kind of secondary cell top cover that Fig. 2 is provided by the embodiment of the present application
Sectional view；
The local of the part A of the another kind of secondary cell top cover that Fig. 3 is provided by the embodiment of the present application is put
Big sectional view；
Fig. 4 is the current trend schematic diagram of the secondary cell top cover shown in Fig. 3.
Reference:
10-the first pole；
100-pole body；
102-pole plate；
20-coping plate；
200-bores a hole；
30-resistive coating；
40-the second pole；
50-connecting plate；
60-rotating sheet；
70-insulation division.
Accompanying drawing herein is merged in description and constitutes the part of this specification, it is shown that meet this
The embodiment of application, and for explaining the principle of the application together with description.
Detailed description of the invention
Below by specific embodiment and combine accompanying drawing the application is described in further detail.Literary composition
Described in "front", "rear", "left", "right", " on ", D score is all with the secondary cell top cover in accompanying drawing
Laying state be reference.
As shown in Figures 1 to 3, the embodiment of the present application provides a kind of secondary cell top cover, including first
Pole 10, coping plate 20, resistive coating 30 and the second pole 40, the most also include connecting plate
50 and rotating sheet 60.Coping plate 20 can be provided with two perforation 200, the first pole 10
Pass through one of perforation 200, and fix with coping plate 20.Second pole 40 is conventional structure,
Through another bore a hole 200, and with coping plate 20 electric insulation, connecting plate 50 is electrically connected to the second pole
Post 40, rotating sheet 60 electrically connects with coping plate 20.Resistive coating 30 is applied directly to the first pole
10 or coping plate 20 on, naturally it is also possible to the two is coated simultaneously.Resistive coating after coating
30 between coping plate 20 and the first pole 10, and simultaneously with the first pole 10 and coping plate
20 realize electrical connection.When the internal pressure of secondary cell exceedes reference pressure, rotating sheet 60 overturns
And can contact connecting plate 50, now electric current by the first pole 10 through resistive coating 30, coping plate
20, rotating sheet 60, connecting plate 50 finally arrive at the second pole 40, with by the first pole 10 and
Two poles 40 realize short circuit.
Compared to resistance bolck, the very thin thickness of resistive coating 30, therefore, it is possible to be greatly reduced top cover
Thickness, can accommodate larger sized battery core in certain assembly space, thus improve secondary cell
Energy density.
In the present embodiment, the first pole 10 includes pole body 100 and pole plate 102, pole
Body 100 and pole plate 102 can use integral structure, it is possible to use split-type structural.Pole plate
102 upper surfaces being buckled in coping plate 20, pole body 100 then through perforation 200 and with pole plate
102 are connected.Resistive coating 30 can be arranged between pole plate 102 and coping plate 20 and (see
Fig. 2), it is also possible to be arranged on (such as, pole body between pole body 100 and coping plate 20
Between perforation 200 in the outer surface of 100 and coping plate 20, or pole body 100 and coping plate
Lower surface between), all can play increase protection circuit cell resistance effect.
Certainly, in the present embodiment can also be simultaneously at the upper surface of pole plate 102 with coping plate 20
Between and the lower surface of pole body 100 and coping plate 20 between be respectively provided with this resistive coating 30 (ginseng
See Fig. 3), so can constitute coping plate 20 by lower surface to resistive coating 30 to pole body 100
And coping plate 20 is by upper surface to 100 two shunt circuits of pole plate 102 to pole body (ginseng
See Fig. 4), reduce the breakdown probability burnt out of resistive coating 30, the two resistive coating 30
Resistance all can the most individually adjust.Further, even if the resistance wherein on a loop is coated with
Layer 30 is burned, and also has another resistive coating 30 to continue to play a role, thus comprehensively improves electricity
The security performance in pond.
In the present embodiment, in order to ensure the sealing property between the first pole 10 and perforation 200,
Insulation division 70 is arranged between the first pole 10 and coping plate 20 by the present embodiment.Due to insulation division
The thickness of 70 is much larger than resistive coating 30, therefore to make to be arranged on pole body 100 and coping plate
Arrange resistive coating 30 between 20 can more fully fit with the two, will perforation in the present embodiment
200 are arranged for lower big little counterbore (seeing Fig. 2, Fig. 3), and insulation division 70 can be arranged on
In counterbore, so that pole body 100 can be closer with the lower surface of coping plate 20, make electricity
Resistance coating 30 fully fits together with the two.
Generally, the resistance of resistive coating 30 at least to reach 10～1000Mohm.In order to reach
To this resistance, resistive coating 30 can use nickel dam, teflon layer, tin layers, fe-zn alloy layer
And the independent one in layers of chrome, it would however also be possible to employ multiple compound.The thickness of resistive coating 30 is general
In 150～400 μ m.Generally, the thickness of resistive coating 30 may remain in
In the range of 200～300 μm, the resistance of such resistive coating 30 is at 50～130Mohm
In preferred range.
In the present embodiment, can use various ways that resistive coating 30 is set, can be such as plating,
Chemical plating, spray paint, smear, thermal spraying and gas phase deposition technology etc..
In the present embodiment, the first pole can be positive terminal or negative terminal, and the second pole corresponds to negative pole
Post or positive terminal.
In the present embodiment, secondary cell can be lithium ion battery, Zinc ion battery, sodium-ion battery
Deng.
The secondary cell top cover that the present embodiment is provided can be greatly decreased the height of top cover, improves energy
Density.Additionally, also have features such as arranging simple process.
Additionally, the application also provides for a kind of secondary cell, described secondary cell is provided with aforementioned secondary electricity
Pond top cover.
The foregoing is only the preferred embodiment of the application, be not limited to the application, for
For those skilled in the art, the application can have various modifications and variations.All essences in the application
Within god and principle, any modification, equivalent substitution and improvement etc. made, should be included in the application
Protection domain within.
Claims (9)
1. a secondary cell top cover, it is characterised in that include the first pole, the second pole, top
Cover plate and resistive coating,
Second pole and coping plate electric insulation,
Be provided with perforation on described coping plate, described first pole pass described perforation, and with described top
Cover plate is fixed, and described resistive coating is applied directly on described first pole and/or described coping plate, institute
State resistive coating between described first pole and described coping plate, and simultaneously with described first pole
Post and described coping plate realize electrical connection.
Secondary cell top cover the most according to claim 1, it is characterised in that described first pole
Post includes pole body and pole plate,
Described pole plate is buckled in the upper surface of described coping plate, and described pole body is through described perforation also
It is connected with described pole plate.
Secondary cell top cover the most according to claim 2, it is characterised in that described resistance is coated with
Layer is arranged between described pole plate and described coping plate and/or described pole body and described coping plate
Between.
Secondary cell top cover the most according to claim 3, it is characterised in that also include insulation
Portion, described perforation is lower big little counterbore, and described insulation division is positioned at described counterbore.
5. according to the secondary cell top cover described in any one of Claims 1-4, it is characterised in that
Described resistive coating be the one in nickel dam, teflon layer, tin layers, fe-zn alloy layer and layers of chrome or
Multiple.
Secondary cell top cover the most according to claim 1, it is characterised in that also include connecting plate
And rotating sheet；Described connecting plate is electrically connected to described second pole；Described rotating sheet and described coping plate
Electrical connection, when the internal pressure of secondary cell exceedes reference pressure, rotating sheet overturns and contacts described company
Fishplate bar, to realize short circuit by described first pole and described second pole.
Secondary cell top cover the most according to claim 5, it is characterised in that described resistance is coated with
The thickness of layer is 150～400 μm.
Secondary cell top cover the most according to claim 7, it is characterised in that described resistance is coated with
The thickness of layer is 200～300 μm.
9. a secondary cell, it is characterised in that it is arbitrary that described secondary cell has claim 1～8
Secondary cell top cover described in Xiang.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620336033.8U CN205508894U (en) | 2016-04-20 | 2016-04-20 | Secondary cell top cap and secondary cell thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620336033.8U CN205508894U (en) | 2016-04-20 | 2016-04-20 | Secondary cell top cap and secondary cell thereof |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205508894U true CN205508894U (en) | 2016-08-24 |
Family
ID=56706158
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201620336033.8U Active CN205508894U (en) | 2016-04-20 | 2016-04-20 | Secondary cell top cap and secondary cell thereof |
Country Status (1)
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| CN (1) | CN205508894U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107634156A (en) * | 2017-09-07 | 2018-01-26 | 深圳市长盈精密技术股份有限公司 | Cover plate of power battery and its electrokinetic cell |
| CN108075054A (en) * | 2016-11-16 | 2018-05-25 | 宁德时代新能源科技股份有限公司 | Power battery top cover structure and power battery |
-
2016
- 2016-04-20 CN CN201620336033.8U patent/CN205508894U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108075054A (en) * | 2016-11-16 | 2018-05-25 | 宁德时代新能源科技股份有限公司 | Power battery top cover structure and power battery |
| CN108075054B (en) * | 2016-11-16 | 2021-05-04 | 宁德时代新能源科技股份有限公司 | Power battery top cover structure and power battery |
| CN107634156A (en) * | 2017-09-07 | 2018-01-26 | 深圳市长盈精密技术股份有限公司 | Cover plate of power battery and its electrokinetic cell |
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|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |