CN204885267U - Low internal resistance energy storage device is drawn forth to bi -polar - Google Patents
Low internal resistance energy storage device is drawn forth to bi -polar Download PDFInfo
- Publication number
- CN204885267U CN204885267U CN201520553559.7U CN201520553559U CN204885267U CN 204885267 U CN204885267 U CN 204885267U CN 201520553559 U CN201520553559 U CN 201520553559U CN 204885267 U CN204885267 U CN 204885267U
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- Prior art keywords
- bolt
- current collecting
- collecting plates
- internal resistance
- exit
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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 relates to a low internal resistance energy storage device is drawn forth to bi -polar. Drawing bolt, mass flow dish, electric core and casing including what pass the apron, drawing the upper and lower both ends that the end lies in the device respectively, draw the end and be and check and regulate the body by drawing bolt mass flow that bolt and mass flow dish connected into, the upper and lower both sides of being formed by the cladding of electric core are left utmost point ear and are drawn the end, and utmost point ear is drawn the end and is coiled the looks rigid coupling with the mass flow, on draw forth the end mass flow dish top the apron is equipped with, draw forth the bolt and pass the apron fairlead, draw forth the fairlead that the bolt passed the casing bottom surface of end down. The utility model discloses the electrode draw and with the connection structure of apron, the positive negative pole of device is drawn respectively from both ends, is favorable to reducing the device internal resistance, improves its power performance, has the utmost point of messenger ear and connects reliable, the nimble characteristics of mode of connection, it is as an organic whole with inside mass flow dish rigid coupling to draw forth the bolt, and welding ESR value is little, has further reduced connecting resistance, has improved energy storage device's power characteristic, leakproofness and insulation class.
Description
Technical field
The utility model relates to energy storage device manufacturing technology field, is specifically related to a kind of both-end and draws energy-storing device with low internal resistance.
Background technology
Along with becoming increasingly conspicuous of environmental problem, show urgent and important for research that is clean, green energy resource.Current secondary is green, novel energy-storing device mainly contains lithium ion battery, ultracapacitor, fuel cell etc.Lithium ion battery has the advantages such as voltage is high, energy density is high, environmental protection, and ultracapacitor has that power density is large, have extended cycle life advantages such as (more than 100,000 times), becomes the object of current extensive research.
The devices such as electric automobile, hybrid vehicle, the pulse power, energy-storage system are all to having higher requirement in the power-performance of its energy storage device, useful life.In raising energy storage device power-performance, life characteristic, main measure has: 1. optimize and innovate electrode material formula, improves power capability, the life capacity of electrode; 2. improve electrolyte, reduce resistance; 3. improve the lug lead-out mode of electrode, reduce contact resistance.4. improve cover plate, the fit structure of housing and bolt extraction place improves air-tightness and insulating properties, thus improve useful life; Improving electrode lead-out structure and improving in electrolyte, many researchers have carried out large quantity research, also achieve greater advance.When electrode resistance and bath resistance are all reduced to a certain degree, the extraction resistance of electrode tabs and seem particularly important with cover plate and housing fit structure in whole energy storage device.Namely need modified electrode pole ear leading-out could reduce the all-in resistance of energy storage device further, improve air-tightness and insulating properties; Just can reach and improve energy storage device power-performance, cycle performance further, improve the reliability of energy storage device.
On the lead-out mode of electrode, though there are some to improve, make slow progress, as: the lug supersonic welding of battery core is connected on brace by (1), and brace is connected with the external cabling post of energy storage device by rivet; (2) on electrode slice, weld multiple lug, by multiple tab welding on a little metallic plate, metallic plate is by clip spring structure and end plate connection, and this mode requires high to the accuracy of manufacture of jump ring, processing difficulties; (3) soldering polar ear on electrode slice, stays a hole in the heart portion of core bag, by this hole, core bag electrode tabs is welded on the bottom of shell with spot welding machine, and another pole spot welding machine is by tab welding on end plate, and this mode solder joint is few, and internal resistance is still larger; (4) bolt and cover plate are injected into one, improve air-tightness; (4) punch on the lug of battery core, be screwed on bolt, bolt directly stretches out energy storage device housing by hermetically-sealed construction, but is fixed on bolt with screw by lug, because loosened screw can cause loose contact.
Utility model content
The utility model object is the deficiency existed for prior art, there is provided a kind of both-end to draw energy-storing device with low internal resistance, this structural design can make the internal resistance reduction of energy storage device, reliability increases, power density improves and the sealing of bolt extraction place and the class of insulation improve.
The utility model proposes following technical scheme: a kind of both-end draws energy-storing device with low internal resistance, comprise cover plate, device exit, the battery core, housing and the liquid injection hole that form is wrapped by by some pole pieces leaving lug, it is characterized in that: described exit lays respectively at the upper/lower terminal of device, exit is that the bolt current collecting plates connected into by extraction bolt and current collecting plates is overall, lug exit is all left on the upper and lower both sides of battery core being wrapped by composition, lug exit and current collecting plates Joint; Above the current collecting plates wherein going up exit, cover plate is housed, forms the extraction bolt of bolt current collecting plates entirety through cover plate fairlead, the extraction bolt of lower exit is through the fairlead of housing bottom surface.
Described current collecting plates has liquid-leadage hole and pod apertures, the electrolyte injected by the liquid injection hole of housing bottom surface passes into battery core through liquid-leadage hole and pod apertures.
Described pod apertures is 3 ~ 6 and is positioned on the current collecting plates of extraction bolt root, and liquid-leadage hole opens the periphery at current collecting plates.
Above described current collecting plates along extraction bolt root with radial, reinforcement gusset is set, this reinforcement gusset and pod apertures staggered.
Before affixed, insulated ring is housed between described lug exit and current collecting plates, lug exit is through insulated ring and current collecting plates Joint.
At the affixed periphery of current collecting plates and the lug exit near housing with slope, insulated ring covering makes affixed periphery and housing isolate on the slope.
Described cover plate forms by near the cover plate metalwork and the cover plate pouring piece be coated on outside metalwork of drawing bolt.
Anti-explosion mechanism is equipped with on described cover plate or the bottom surface of housing.
Described housing is cylindrical.
This new electrode tabs extraction that the utility model proposes and the syndeton with cover plate, the extraction of device is drawn from two ends by this structure respectively, is conducive to the internal resistance reducing energy storage device, improves its power-performance, and have and make lug connect reliable, mode of connection feature flexibly; Outer connection extraction bolt and inner current collector dish are fixed as one, further reduce contact resistance, welding ESR value is little, improve the power characteristic of energy storage device, and bolt extraction place uses the locked tight fit structure of nut with the sealed insulation at cover plate, housing place, effectively improves sealing, air-tightness and the class of insulation.
Accompanying drawing explanation
Fig. 1 is the utility model covering plate structure schematic diagram.
Fig. 2 is cover plate generalized section.
Fig. 3 is device shell structural representation.
Fig. 4 is bolt current collecting plates overall structure schematic diagram.
Cross-sectional view after the assembling of Fig. 5 the utility model.
In figure: 1 draws bolt; 2 sealing rings; 3 cover plates; 3-1 cover plate pouring piece; 3-2 cover plate metalwork; 4 current collecting plates; 5 insulated rings; 6 battery cores; 7 housings; 8 liquid injection holes; 9 anti-explosion mechanisms; 10 pod apertures; 11 lug exits; 12 liquid-leadage holes; 13 strengthen gusset; 14 slopes.
Embodiment
See Fig. 1 ~ 5, both-end designed by the utility model draws energy-storing device with low internal resistance, comprise cover plate, device exit, the battery core 6, housing 7 and the liquid injection hole 8 that form is wrapped by by some pole pieces leaving lug, energy storage device housing 7 is cylindrical structural (see Fig. 3), and the bottom surface of housing 7 has the liquid injection hole 8 of a filling electrolyte; Arrange sealing ring 5 between cover plate 3 and cylindrical housings 7, during installation, housing 7 top edge presses down that back bending is circular to be coordinated with cover plate 3, and adds sealing ring 5 and housing seal in cooperation place.Described cover plate 3 forms by near the cover plate metalwork 3-2 and the cover plate pouring piece 3-1 be coated on outside metalwork that draw bolt, to improve the insulation property (see Fig. 1, Fig. 2) of device; In the bottom surface of housing 7, anti-explosion mechanism 9 is housed, as explosion-proof valve or rupture pressure disc, anti-explosion mechanism also can be arranged on cover plate 3.
See Fig. 5, the exit of the utility model device lays respectively at the upper/lower terminal of device, exit is the bolt current collecting plates entirety (see Fig. 4) connected into current collecting plates 4 by extraction bolt 1, lug exit 11 is left on the upper and lower both sides of battery core 6 being wrapped by composition, adopts laser welding between lug exit 11 and current collecting plates 4; Above the current collecting plates 4 wherein going up exit, cover plate 3 is housed, forms the extraction bolt 1 of bolt current collecting plates entirety through cover plate 3 fairlead; The extraction bolt 1 of lower exit is through housing 7 bottom surface, as the lower exit of negative pole without independently cover plate, be the cover plate using the end of housing 7 as negative pole, the end, is provided with one and draws the mating holes that current collecting plates entirety draws bolt 1, and arranges an explosion-proof valve opening and a through hole liquid injection hole 8.The lug exit 11 of battery core is linked together by welding and the current collecting plates 4 on bolt lead body and is carried out assembling (see Fig. 4, Fig. 5) with cover plate, housing.Before affixed, insulated ring 5 is housed between lug exit 11 and current collecting plates 4, lug exit is through insulated ring and current collecting plates 4 Joint, near the current collecting plates 4 of housing and the affixed periphery of lug exit 11 with slope 14, insulated ring 5 covers on slope 14 and affixed periphery and housing 7 is isolated.
See Fig. 4, current collecting plates 4 has liquid-leadage hole 12 and pod apertures 10, the electrolyte injected by the liquid injection hole 8 of housing bottom surface passes into battery core 6 through liquid-leadage hole and pod apertures; Described pod apertures 10 is designed to four, and is positioned on the current collecting plates of extraction bolt 1 root, and liquid-leadage hole 12 opens the periphery at current collecting plates 4, and this structure can make electrolyte fully infiltrate into battery core core bag; Current collecting plates 4 strengthens gusset 13 along drawing bolt root with radial setting above, and this reinforcement gusset 13 is staggered with pod apertures 10.The energy storage device that the utility model is applicable to comprises and carries out the device of energy storage by electrochemical principle and carried out the device of energy storage by physical principle, as lithium ion battery, ultracapacitor, mixed capacitor, electrochemical capacitor, double electric layer capacitor, high power battery etc.
Claims (9)
1. a both-end draws energy-storing device with low internal resistance, comprise cover plate, device exit, the battery core (6), housing (7) and the liquid injection hole (8) that form is wrapped by by some pole pieces leaving lug, it is characterized in that: described exit lays respectively at the upper/lower terminal of device, exit is that the bolt current collecting plates connected into by extraction bolt (1) and current collecting plates (4) is overall, lug exit (11) is all left on battery core (6) the upper and lower both sides being wrapped by composition, lug exit (11) and current collecting plates (4) Joint; Cover plate (3) is equipped with in current collecting plates (4) top of wherein going up exit, form the extraction bolt (1) of bolt current collecting plates entirety through cover plate (3) fairlead, the extraction bolt (1) of lower exit is through the fairlead of housing (7) bottom surface.
2. both-end according to claim 1 draws energy-storing device with low internal resistance, it is characterized in that: described current collecting plates (4) has liquid-leadage hole (12) and pod apertures (10), the electrolyte injected by the liquid injection hole (8) of housing bottom surface passes into battery core (6) through liquid-leadage hole and pod apertures.
3. both-end according to claim 2 draws energy-storing device with low internal resistance, it is characterized in that: described pod apertures (10) is 3 ~ 6 and is positioned on the current collecting plates of extraction bolt (1) root, and liquid-leadage hole (12) opens the periphery in current collecting plates (4).
4. both-end according to claim 3 draws energy-storing device with low internal resistance, it is characterized in that: described current collecting plates (4) above strengthens gusset (13) along extraction bolt root with radial setting, this reinforcement gusset and pod apertures (10) staggered.
5. both-end according to claim 1 draws energy-storing device with low internal resistance, it is characterized in that: before affixed, insulated ring (5) is housed between described lug exit (11) and current collecting plates (4), lug exit is through insulated ring and current collecting plates (4) Joint.
6. both-end according to claim 5 draws energy-storing device with low internal resistance, it is characterized in that: at the affixed periphery of current collecting plates (4) and the lug exit (11) near housing with slope (14), insulated ring (5) covers and makes affixed periphery and housing (7) isolate on the slope.
7. both-end according to claim 1 draws energy-storing device with low internal resistance, it is characterized in that: described cover plate (3) forms by near the cover plate metalwork (3-2) and the cover plate pouring piece (3-1) be coated on outside metalwork of drawing bolt.
8. both-end according to claim 1 draws energy-storing device with low internal resistance, it is characterized in that: anti-explosion mechanism (9) is equipped with in described cover plate (3) bottom surface that is upper or housing (7).
9. both-end according to claim 1 draws energy-storing device with low internal resistance, it is characterized in that: described housing (7) is for cylindrical.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520553559.7U CN204885267U (en) | 2015-07-22 | 2015-07-22 | Low internal resistance energy storage device is drawn forth to bi -polar |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520553559.7U CN204885267U (en) | 2015-07-22 | 2015-07-22 | Low internal resistance energy storage device is drawn forth to bi -polar |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204885267U true CN204885267U (en) | 2015-12-16 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520553559.7U Expired - Fee Related CN204885267U (en) | 2015-07-22 | 2015-07-22 | Low internal resistance energy storage device is drawn forth to bi -polar |
Country Status (1)
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| CN (1) | CN204885267U (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105428566A (en) * | 2015-12-17 | 2016-03-23 | 中天储能科技有限公司 | Lithium ion battery with low internal resistance and high shock resistance |
| CN109786133A (en) * | 2017-11-13 | 2019-05-21 | 济南圣泉集团股份有限公司 | Energy storage device |
| CN110197770A (en) * | 2019-04-16 | 2019-09-03 | 南通江海储能技术有限公司 | A kind of both ends pole type high-performance super capacitor |
| CN114361664A (en) * | 2021-12-22 | 2022-04-15 | 江苏海基新能源股份有限公司 | Square hard-shell lithium ion battery cover plate, battery and assembly method |
| WO2022241615A1 (en) * | 2021-05-17 | 2022-11-24 | 微宏动力系统（湖州）有限公司 | Positive electrode current collector disc and cylindrical battery |
-
2015
- 2015-07-22 CN CN201520553559.7U patent/CN204885267U/en not_active Expired - Fee Related
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105428566A (en) * | 2015-12-17 | 2016-03-23 | 中天储能科技有限公司 | Lithium ion battery with low internal resistance and high shock resistance |
| CN109786133A (en) * | 2017-11-13 | 2019-05-21 | 济南圣泉集团股份有限公司 | Energy storage device |
| CN110197770A (en) * | 2019-04-16 | 2019-09-03 | 南通江海储能技术有限公司 | A kind of both ends pole type high-performance super capacitor |
| WO2022241615A1 (en) * | 2021-05-17 | 2022-11-24 | 微宏动力系统（湖州）有限公司 | Positive electrode current collector disc and cylindrical battery |
| CN114361664A (en) * | 2021-12-22 | 2022-04-15 | 江苏海基新能源股份有限公司 | Square hard-shell lithium ion battery cover plate, battery and assembly method |
| CN114361664B (en) * | 2021-12-22 | 2024-03-15 | 江苏海基新能源股份有限公司 | Square hard shell lithium ion battery cover plate, battery and assembly method |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20151216 Termination date: 20200722 |