CN204596850U - A kind of cover plate assembly and lithium ion battery - Google Patents
A kind of cover plate assembly and lithium ion battery Download PDFInfo
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- CN204596850U CN204596850U CN201520187306.2U CN201520187306U CN204596850U CN 204596850 U CN204596850 U CN 204596850U CN 201520187306 U CN201520187306 U CN 201520187306U CN 204596850 U CN204596850 U CN 204596850U
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- cover plate
- plate assembly
- video disc
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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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Abstract
The utility model discloses a kind of cover plate assembly, comprise cover board body, cover board body is provided with fairlead and liquid injection hole; Connect video disc, connect video disc and be engaged in described fairlead; Insulating sealer, insulating sealer is fixedly connected on the upper end connecting video disc; Leading-out terminal, the lower end of leading-out terminal is passed insulating sealer successively and is connected video disc, and leading-out terminal is fixedly connected with insulating sealer; The lower surface of cover board body is provided with insulating part, is formed with fluid injection chamber between insulating part and liquid injection hole, and the lower surface in fluid injection chamber is provided with strip delivery hole.The cover plate assembly that the utility model provides, can make electrolyte faster evenly be injected into inside battery.Meanwhile, the utility model additionally provides a kind of lithium ion battery containing above-mentioned cover plate assembly.
Description
Technical field
The utility model relates to field of lithium ion battery, particularly relates to a kind of cover plate assembly and lithium ion battery thereof.
Background technology
In lithium ion battery, the lower surface of cover board body is provided with insulating part, and cover board body is provided with liquid injection hole; In injection process, electrolyte is injected into inside lithium ion cell by liquid injection hole.
In the prior art, as shown in Figure 3, insulating part 50 is positioned at the position immediately below liquid injection hole 104, is provided with perforate 506; Electrolyte is injected by liquid injection hole 104, and the perforate 506 on insulating part 50 is injected into inside lithium ion cell.Perforate 506 on insulating part 50 is circular, is plane circular hole; Its diameter is larger or identical with the diameter of liquid injection hole 104 than the diameter of liquid injection hole 104, when the diameter of the plane circular hole on insulating part 50 is identical with the diameter of liquid injection hole 104, preferably this plane circular hole and liquid injection hole 104 jointly can form a reservoir channel, electrolyte directly flow to inside lithium ion cell through liquid injection hole 104 and this plane cylinder.The effect of this perforate 506, is only used to stay a passage to the electrolyte injected by liquid injection hole 104, can be injected into inside battery; Because this perforate 506 is circular holes, and it is positioned at immediately below liquid injection hole 104, so this perforate 506 does not have guide functions.
Because the perforate on insulating part is plane circular hole, the electrolyte injected via liquid injection hole, can only flow into inside lithium ion cell by this circular hole; Because the size dimension of this plane circular hole is limited, and be circular port, so the electrolyte injected by liquid injection hole, inside lithium ion cell can only be flowed into by the middle of two battery cores.The perforate of this structure, electrolyte inflow velocity is slow on the one hand, can only flow into inside lithium ion cell in the middle of two battery cores; On the other hand, because perforate is circular, good guide functions can not be played, fine, the well-proportioned inflow inside lithium ion cell of electrolyte can not be made.
Summary of the invention
The utility model is intended to solve the problems of the technologies described above to a certain extent.
For this reason, the utility model proposes a kind of cover plate assembly, comprising: cover board body, described cover board body is provided with fairlead and liquid injection hole; Connect video disc, described connection video disc is engaged in described fairlead; Insulating sealer, described insulating sealer is fixedly connected on the upper end of described connection video disc; Leading-out terminal, the lower end of described leading-out terminal is passed insulating sealer successively and is connected video disc, and described leading-out terminal is fixedly connected with described insulating sealer; The lower surface of described cover board body is provided with insulating part, is formed with fluid injection chamber between described insulating part and liquid injection hole, and the lower surface in described fluid injection chamber is provided with strip delivery hole.
The cover plate assembly that the utility model provides, fluid injection chamber is formed between insulating part and liquid injection hole, and at the lower surface in fluid injection chamber, strip delivery hole is set, by the round hole on insulating part in prior art, become the strip delivery hole in the utility model, and between delivery hole and liquid injection hole, be formed with the fluid injection chamber for storing electrolyte.When electrolyte is injected by liquid injection hole, first electrolyte can be filled in fluid injection chamber, then flows into inside lithium ion cell through the strip liquid injection hole of this fluid injection chamber lower surface; Injection for electrolyte provides certain spatial cache, and electrolyte can be made to inject faster; Simultaneously, the delivery hole of strip, can be good at electrolyte to be guided to inside lithium ion cell uniformly, and between two battery cores being not limited to inside lithium ion cell, increase the flow range of electrolyte, for lithium ion battery provides the higher fluid injection channel of efficiency.
Preferably, the width of described delivery hole is less than the diameter of described liquid injection hole.
Preferably, described delivery hole is positioned at immediately below described liquid injection hole.
Preferably, the lower surface in described fluid injection chamber is inclined-plane.
Further, the lower surface in described fluid injection chamber is thinning gradually to the side of contiguous described delivery hole by the side away from described delivery hole.
Preferably, described delivery hole is arranged along the Width of described cover plate assembly.
Preferably, described delivery hole is arranged along the length direction of described cover plate assembly.
Preferably the, described connection video disc comprises the first annulus be connected with insulating sealer, the second annulus be connected with cover board body and connects the 3rd annulus of the first annulus and the second annulus, and the internal diameter of described second annulus is not less than the external diameter of the first annulus.
Further, the external diameter of described connection video disc be the 3-5 of the column diameter of leading-out terminal through described connection video disc doubly.
Further, be positioned at the rectangular structure of insulating part of described first annulus lower end, comprise the first insulation division of vertical direction and the second insulation division of horizontal direction, between described first insulation division, the second insulation division, leading-out terminal and insulating sealer, form installing space.
Further, described cover plate assembly comprises sealing ring, and described sealing ring is arranged in described installing space.
Preferably, described insulating sealer is ceramic seal.
In addition, the utility model additionally provides a kind of lithium ion battery, comprises shell, for sealing the cover plate assembly of described shell and arranging battery core in the enclosure and electrolyte; Wherein, the cover plate assembly that provides for the utility model of described cover plate assembly.
The lithium ion battery that the utility model provides, owing to have employed the cover plate assembly that the utility model provides, when fluid injection, can more efficient evenly the inside injecting the electrolyte into lithium ion battery.
Additional aspect of the present utility model and advantage will part provide in the following description, and part will become obvious from the following description, or be recognized by practice of the present utility model.
Accompanying drawing explanation
Above-mentioned and/or additional aspect of the present utility model and advantage will become obvious and easy understand from accompanying drawing below combining to the description of embodiment.
Fig. 1 is sealing ring of the prior art assembling schematic diagram.
Fig. 2 is the sealing ring assembling schematic diagram that the utility model provides.
Fig. 3 is reservoir channel schematic diagram of the prior art.
Fig. 4 Width cross section view that to be delivery hole arranged along the Width of cover plate assembly.
Fig. 5 length direction cross section view that to be delivery hole arranged along the Width of cover plate assembly.
Fig. 6 is the Width cross section view that delivery hole is arranged along cover plate assembly length direction.
Fig. 7 is the length direction cross section view that delivery hole is arranged along cover plate assembly length direction.
Fig. 8 is the overall structure schematic diagram of the cover plate assembly that the utility model provides.
Embodiment
Be described below in detail embodiment of the present utility model, the example of described embodiment is shown in the drawings, and wherein same or similar label represents same or similar element or has element that is identical or similar functions from start to finish.Be exemplary below by the embodiment be described with reference to the drawings, be intended to for explaining the utility model, and can not be interpreted as restriction of the present utility model.
In description of the present utility model, it will be appreciated that, term " length ", " width ", " thickness ", " on ", D score, " front ", " afterwards ", " left side ", " right side ", " vertically ", " level ", " top ", " end ", " interior ", orientation or the position relationship of the instruction such as " outward " are based on orientation shown in the drawings or position relationship, only the utility model and simplified characterization for convenience of description, instead of indicate or imply that the device of indication or element must have specific orientation, with specific azimuth configuration and operation, therefore can not be interpreted as restriction of the present utility model.In addition, term " first ", " second " only for describing object, and can not be interpreted as instruction or hint relative importance or imply the quantity indicating indicated technical characteristic.Thus, be limited with " first ", the feature of " second " can express or impliedly comprise one or more these features.In description of the present utility model, the implication of " multiple " is two or more, unless otherwise expressly limited specifically.
In the utility model, unless otherwise clearly defined and limited, the term such as term " installation ", " being connected ", " connection ", " fixing " should be interpreted broadly, and such as, can be fixedly connected with, also can be removably connect, or connect integratedly; Can be mechanical connection, also can be electrical connection; Can be directly be connected, also indirectly can be connected by intermediary, can be the connection of two element internals.For the ordinary skill in the art, the concrete meaning of above-mentioned term in the utility model can be understood as the case may be.
Below in conjunction with accompanying drawing specific descriptions according to the cover plate assembly of the utility model embodiment and lithium ion battery.
As shown in Figure 2, the utility model provides a kind of cover plate assembly, comprises cover board body 10, and this cover board body 10 is provided with fairlead (not shown) and liquid injection hole 104; Connect video disc 20, this connection video disc 20 is engaged in fairlead; Insulating sealer 30, it is fixedly connected on the upper end of above-mentioned connection video disc 20; Leading-out terminal 40, the lower end of this leading-out terminal 40 is passed insulating sealer 30 successively and is connected video disc 20, stretches to inside battery, for being electrically connected with the lead-out tablet of battery core 90; Further, this leading-out terminal 40 is fixedly connected with insulating sealer 30.
More specifically, connect video disc 20 and be fixed in the fairlead of cover board body 10, the size connecting video disc 20 is corresponding with fairlead, can be equipped with in this fairlead.As Fig. 2 shows, the lower end connecting video disc 20 is connected with cover board body 10, and the upper end connecting video disc 20 is connected with insulating sealer 30, and this connected mode can adopt welding.Certainly, the annexation of connection video disc 20 and cover board body 10 and insulating sealer 30, position relationship also can be other conventional positions, annexations in industry, are not limited to above-mentioned disclosed mode.
Leading-out terminal 40 is fixedly connected with by the mode of welding with insulating sealer 30, more specifically, as shown in Figure 2, leading-out terminal 40 upper end is provided with flange, and this flange comprises the first flat part 402, second flat part 404 and the annular rake 406 for connecting the first flat part 402 and the second flat part 404; This leading-out terminal 40 is welded to connect with insulating sealer 30 by the second flat part 404.The setting of this flange, can be good at playing cushioning effect.
As shown in Figure 2 and Figure 4, the lower surface of cover board body 10 is provided with insulating part 50, this insulating part 50 is for insulation cover plate body 10 and inside lithium ion cell, more specifically, this insulating part 50 covers the whole lower surface of cover board body 10, extended to the edge of cover board body 10 by the fairlead of cover board body 10, and cover the liquid injection hole 104 on cover board body 10.Be formed with fluid injection chamber 60 between insulating part 50 and liquid injection hole 104, the lower surface in fluid injection chamber 60 is provided with strip delivery hole 70.When electrolyte is injected by liquid injection hole 104, first electrolyte can be filled in fluid injection chamber 60, then flows into inside lithium ion cell through the strip liquid injection hole 104 of this fluid injection chamber 60 lower surface; Injection for electrolyte provides certain spatial cache, and electrolyte can be made to inject faster; Simultaneously, the delivery hole 70 of strip, can be good at each position electrolyte being guided to uniformly inside lithium ion cell, and between two battery cores 90 being not limited to inside lithium ion cell, increase the flow range of electrolyte, for lithium ion battery provides the higher fluid injection channel of efficiency.
In an embodiment of the present utility model, the width of delivery hole 70 is less than the diameter of liquid injection hole 104; This structural design, can be good at avoiding electrolyte to be directly injected into inside battery through liquid injection hole 104, and first must inject inside battery through the drainage of delivery hole 70.Width due to delivery hole 70 is less than the diameter of liquid injection hole 104, and electrolyte can not flow directly into inside battery after being injected by liquid injection hole 104, but first part is stored in fluid injection chamber 60, then is drained to inside battery by the delivery hole 70 bottom fluid injection chamber 60; Better can realize the guide functions of delivery hole 70, make electrolyte fill full whole inside battery more fast, uniformly.
In order to better, fluid injection faster, preferably delivery hole 70 is arranged on immediately below liquid injection hole 104, like this inject electrolyte, directly can be guided to inside battery by delivery hole 70, and the path of liquid flow need not be increased.
Meanwhile, in order to better embody the guide functions of delivery hole 70, by the lower surface beveling in fluid injection chamber 60; Like this, be stored in the electrolyte in fluid injection chamber 60, under gravity, delivery hole 70 can be flow to through this inclined-plane.
Further, the lower surface in this fluid injection chamber 60 is thinning gradually to the side of contiguous delivery hole 70 by the side away from delivery hole 70.More specifically, as shown in Fig. 4 or Fig. 7, this inclined-plane is tilted by the centre position at both sides to delivery hole 70 place, and the thickness on inclined-plane is thinner the closer to liquid injection hole 104.
As shown in Figure 4 and Figure 5, in order to better electrolyte is guided between each battery core 90, inside battery is flowed into uniformly by between each battery core 90, in an embodiment of the present utility model, delivery hole 70 is arranged along the Width of cover plate assembly, namely the length direction of delivery hole 70 and the Width of cover plate assembly consistent, in other words, the length direction of delivery hole 70 is consistent with the thickness direction of lithium-ion battery shell.Electrolyte, by the guide functions of delivery hole 70, is directed between multiple battery core 90, the uniform gap flowed between multiple battery core 90, fills full whole inside battery.
As shown in Figure 6 and Figure 7, in order to better electrolyte is guided between two battery cores 90, inside battery is introduced by between two battery cores 90, namely inside battery is flowed into uniformly by the gap, top of two battery cores 90, in an embodiment of the present utility model, delivery hole 70 is arranged along the length direction of cover plate assembly, namely the length direction of delivery hole 70 and the length direction of cover plate assembly consistent, in other words, the length direction of delivery hole 70 and the Width of lithium-ion battery shell consistent.Electrolyte between two walls of the battery core of two below delivery hole 70 90, can flow into inside battery uniformly.
Above-mentioned Width, length direction are for for cover board body 10, and the length direction of cover board body 10 is the Width of lithium ion battery, and the Width of cover board body 10 is the thickness direction of lithium ion battery.As shown in Figure 8, left and right directions is the Width of lithium ion battery, namely the length direction of cover board body 10; The thickness direction of lithium ion battery, and the Width of cover board body 10 can be derived successively.
More specifically, as shown in Figure 2, connect video disc 20 to comprise the first annulus 202 be connected with insulating sealer 30, the second annulus 204 be connected with cover board body 10 and connect the 3rd annulus 206 of the first annulus 202 and the second annulus 204, and the internal diameter of the second annulus 204 is not less than the external diameter of the first annulus 202.Connect video disc 20 and be configured to annular disc-shaped, be compared with drum part with connecting video disc in prior art, as shown in Figure 1, the connection video disc 20 that the utility model provides, add the gap connected between video disc 20 and the cylinder of leading-out terminal 40, sealing ring 80 is more easily assembled.
Preferably, the external diameter of connection video disc 20 is 3-5 times of the column diameter of the leading-out terminal 40 through this connection video disc 20, more selects 4 times.Namely the external diameter of the second annulus 204 connecting video disc 20 be the 3-5 of the diameter of cylinder through the leading-out terminal 40 connecting video disc 20 doubly.
In order to better arrange sealing ring 80, be positioned at the insulating part 50 at right angles structure of the first annulus 202 lower end, comprise the first insulation division 502 of vertical direction and the second insulation division 504 of horizontal direction, form installing space between first insulation division 502, second insulation division 504, leading-out terminal 40 and insulated enclosure folder, sealing ring 80 is arranged in this installing space.Certainly, what provide in above-described embodiment is right-angle structure, and the first insulation division 502, second insulation division 504 might not be right-angle structure in fact, as long as can support an installing space between the first insulation division 502 and the second insulation division 504.
Preferably, in an embodiment of the present utility model, insulating sealer 30 is ceramic seal.
On this basis, the utility model additionally provides a kind of lithium ion battery, as shown in Figure 8, comprises shell, for sealing the cover plate assembly of this shell and arranging battery core 90 in the enclosure and electrolyte, wherein, the cover plate assembly that provides for the utility model of cover plate assembly.In conventional lithium ion battery, above-mentioned more than one of battery core 90 possibility, does not do the restriction of number at this.
In the description of this specification, specific features, structure, material or feature that the description of reference term " embodiment ", " some embodiments ", " example ", " concrete example " or " some examples " etc. means to describe in conjunction with this embodiment or example are contained at least one embodiment of the present utility model or example.In this manual, identical embodiment or example are not necessarily referred to the schematic representation of above-mentioned term.And the specific features of description, structure, material or feature can combine in an appropriate manner in any one or more embodiment or example.
Although illustrate and described embodiment of the present utility model above, be understandable that, above-described embodiment is exemplary, can not be interpreted as restriction of the present utility model, those of ordinary skill in the art can change above-described embodiment when not departing from principle of the present utility model and aim, revising, replacing and modification in scope of the present utility model.
Claims (13)
1. a cover plate assembly, is characterized in that, comprising:
Cover board body (10), described cover board body (10) is provided with fairlead and liquid injection hole (104);
Connect video disc (20), described connection video disc (20) is engaged in described fairlead;
Insulating sealer (30), described insulating sealer (30) is fixedly connected on the upper end of described connection video disc (20);
Leading-out terminal (40), the lower end of described leading-out terminal (40) is passed insulating sealer (30) successively and is connected video disc (20), and described leading-out terminal (40) is fixedly connected with described insulating sealer (30);
The lower surface of described cover board body (10) is provided with insulating part (50), is formed with fluid injection chamber (60) between described insulating part (50) and liquid injection hole (104), and the lower surface of described fluid injection chamber (60) is provided with strip delivery hole (70).
2. cover plate assembly according to claim 1, is characterized in that, the width of described delivery hole (70) is less than the diameter of described liquid injection hole (104).
3. cover plate assembly according to claim 1, is characterized in that, described delivery hole (70) is positioned at immediately below described liquid injection hole (104).
4. cover plate assembly according to claim 1, is characterized in that, the lower surface of described fluid injection chamber (60) is inclined-plane.
5. cover plate assembly according to claim 4, is characterized in that, the lower surface of described fluid injection chamber (60) is thinning gradually to the side of contiguous described delivery hole (70) by the side away from described delivery hole (70).
6. the cover plate assembly according to claim 1 to 5 any one, is characterized in that, described delivery hole (70) is arranged along the Width of described cover plate assembly.
7. the cover plate assembly according to claim 1 to 5 any one, is characterized in that, described delivery hole (70) is arranged along the length direction of described cover plate assembly.
8. cover plate assembly according to claim 1, it is characterized in that, described connection video disc (20) comprises the first annulus (202) be connected with insulating sealer (30), the second annulus (204) be connected with cover board body (10) and connects the 3rd annulus (206) of the first annulus (202) and the second annulus (204), and the internal diameter of described second annulus (204) is not less than the external diameter of the first annulus (202).
9. cover plate assembly according to claim 1, is characterized in that, the external diameter of described connection video disc (20) is 3-5 times of the column diameter of the leading-out terminal (40) through described connection video disc (20).
10. cover plate assembly according to claim 8, it is characterized in that, be positioned at insulating part (50) the at right angles structure of described first annulus (202) lower end, comprise first insulation division (502) of vertical direction and second insulation division (504) of horizontal direction, between described first insulation division (502), the second insulation division (504), leading-out terminal (40) and insulating sealer (30), form installing space.
11. cover plate assemblies according to claim 10, is characterized in that, described cover plate assembly comprises sealing ring (80), and described sealing ring (80) is arranged in described installing space.
12. cover plate assemblies according to claim 1, is characterized in that, described insulating sealer (30) is ceramic seal.
13. 1 kinds of lithium ion batteries, comprise shell, for sealing the cover plate assembly of described shell and the battery core (90) be arranged in described shell and electrolyte, it is characterized in that, described cover plate assembly are the cover plate assembly described in claim 1-12 any one.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520187306.2U CN204596850U (en) | 2015-03-31 | 2015-03-31 | A kind of cover plate assembly and lithium ion battery |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520187306.2U CN204596850U (en) | 2015-03-31 | 2015-03-31 | A kind of cover plate assembly and lithium ion battery |
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| CN204596850U true CN204596850U (en) | 2015-08-26 |
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| CN201520187306.2U Active CN204596850U (en) | 2015-03-31 | 2015-03-31 | A kind of cover plate assembly and lithium ion battery |
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107546409A (en) * | 2017-09-07 | 2018-01-05 | 苏州绿标新能源科技有限公司 | A kind of lithium rechargeable battery |
| CN107565156A (en) * | 2017-09-13 | 2018-01-09 | 苏州绿标新能源科技有限公司 | A kind of lithium-ion-power cell with high safety performance |
| CN110707281A (en) * | 2019-10-10 | 2020-01-17 | 江西赣锋电池科技有限公司 | Secondary cell top cap fluid infusion structure |
| JP2020035581A (en) * | 2018-08-28 | 2020-03-05 | 株式会社Ｇｓユアサ | Power storage element |
| CN111816907A (en) * | 2020-08-31 | 2020-10-23 | 珠海冠宇电池股份有限公司 | Button cell preparation method |
| CN112421155A (en) * | 2019-08-05 | 2021-02-26 | 比亚迪股份有限公司 | Battery and cover plate assembly thereof |
| WO2024007411A1 (en) * | 2022-07-07 | 2024-01-11 | 宁德时代新能源科技股份有限公司 | End cap assembly, battery cell, battery, and electric device |
-
2015
- 2015-03-31 CN CN201520187306.2U patent/CN204596850U/en active Active
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107546409A (en) * | 2017-09-07 | 2018-01-05 | 苏州绿标新能源科技有限公司 | A kind of lithium rechargeable battery |
| CN107565156A (en) * | 2017-09-13 | 2018-01-09 | 苏州绿标新能源科技有限公司 | A kind of lithium-ion-power cell with high safety performance |
| JP2020035581A (en) * | 2018-08-28 | 2020-03-05 | 株式会社Ｇｓユアサ | Power storage element |
| JP7176300B2 (en) | 2018-08-28 | 2022-11-22 | 株式会社Ｇｓユアサ | Storage element |
| CN112421155A (en) * | 2019-08-05 | 2021-02-26 | 比亚迪股份有限公司 | Battery and cover plate assembly thereof |
| CN110707281A (en) * | 2019-10-10 | 2020-01-17 | 江西赣锋电池科技有限公司 | Secondary cell top cap fluid infusion structure |
| CN110707281B (en) * | 2019-10-10 | 2021-12-14 | 江西赣锋电池科技有限公司 | Secondary cell top cap fluid infusion structure |
| CN111816907A (en) * | 2020-08-31 | 2020-10-23 | 珠海冠宇电池股份有限公司 | Button cell preparation method |
| CN111816907B (en) * | 2020-08-31 | 2022-08-05 | 珠海冠宇电池股份有限公司 | Button cell preparation method |
| WO2024007411A1 (en) * | 2022-07-07 | 2024-01-11 | 宁德时代新能源科技股份有限公司 | End cap assembly, battery cell, battery, and electric device |
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