CN103219477A - High-capacity lithium ion battery pack - Google Patents
High-capacity lithium ion battery pack Download PDFInfo
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- CN103219477A CN103219477A CN2013101235387A CN201310123538A CN103219477A CN 103219477 A CN103219477 A CN 103219477A CN 2013101235387 A CN2013101235387 A CN 2013101235387A CN 201310123538 A CN201310123538 A CN 201310123538A CN 103219477 A CN103219477 A CN 103219477A
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- lithium ion
- ion battery
- high capacity
- capacity lithium
- battery group
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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 invention is applied to the technical field of lithium ion battery packs, and provides a high-capacity lithium ion battery pack, which comprises single batteries, a shell and positive and negative output terminals, wherein the single batteries are arranged in the shell; a downwards-sunken part is arranged in one corner of the upper part of the shell; and the positive and negative output terminals are arranged on the downwards-sunken part, and do not exceed the maximum size of the shell. According to the high-capacity lithium ion battery pack, accidental short circuit in mounting and using processes of the battery pack can be effectively prevented, and the safety and reliability of the batteries during production, transportation, use and combination are greatly improved.
Description
Technical field
The invention belongs to the lithium ion battery technical group field, relate in particular to a kind of high capacity lithium ion battery group.
Background technology
Along with worldwide petroleum-based energy is exhausted day by day, and environmental problem is serious day by day, and it is the low-carbon economy of target that national governments have all proposed with energy-saving and emission-reduction, wherein greatly develops electric automobile and new forms of energy energy storage, is the developing direction of emphasis.
In the development of electric automobile and new forms of energy energy storage, an important developing direction that can reach practicability at present just is to use lithium ion battery, it particularly is the lithium ion battery of representative with the ferric phosphate lithium cell, have safe, specific capacity is big, plurality of advantages such as long service life become operable excellent energy source.In these are used, require the capacity of supporting battery to reach more than the 100Ah.
Rely on production technology level, the equipment level of present lithium ion battery, still have bigger difficulty for the production of the lithium ion battery of vast capacity.So present big capacity lithium power lithium-ion battery, mostly be the mode of a plurality of small-capacity cells parallel connections, form a jumbo cell, reach the purpose that increases battery capacity, these batteries are connected in series or parallel again, reach the battery capacity and the magnitude of voltage that need.
The design of at present single group high capacity cell as shown in Figure 1,1 is cathode output end, 2 is cathode output end, 3 is battery case, its characteristic feature is that two lead-out terminals are to stand up on the plane of upper casing, and whole terminal is given prominence on the plane, is directly exposed to the outer end of battery pack.Under the existing situation, adopting the high capacity cell of the duricrust mode of squared design, all is the battery that adopts two structures shown in Figure 1, and two anode and cathode terminals are directly exposed to outside batteries, and there are following drawbacks in this mode.
1, have short circuit hidden danger: the both positive and negative polarity of battery directly exposes, and in a single day outside have metallic foreign body, cause cell direct short-circuit to occur easily, a plurality of series-connected cells perhaps occur and short circuit occurs.Because the capacity of high capacity cell is big, internal resistance is little, in case short circuit occurs, will cause violent short circuit, gently then burns the short circuit metal, and is heavy then will occur burning the initiation potential safety hazard.
2, space availability ratio is not high: battery leading-out terminal superjacent air space need be reserved out, and its occupation space is not only the space of battery pack, but needs battery pack to add the space that the anode and cathode terminals height is shared.For the batteries of electric automobile group all is the inside that is placed on car generally, and volume inside is limited, and this mode will take bigger space.
3, lead-in wire is mixed and disorderly: high capacity lithium ion battery, no matter be applied to the electric automobile field or be applied to the energy storage field, neededly all need the series connection of tens groups or even Battery pack up to a hundred, supporting battery pack all has a power-supply management system, and this management system need be gathered the voltage signal terminal of each battery and the thermistor terminal of temperature acquisition.These holding wires under traditional applicable cases, all need to draw from battery side or top, because the battery pack loam cake is not reserved the wire casing of these lead-in wires, it is more mixed and disorderly to cause these signal leads to be put, if impacted or pushed, be easy to occur situation generations such as short-circuit between conductors, have potential safety hazard.
4, the multi-layer cell stack has difficulties: the leading-out terminal of the battery upper end of traditional design directly makes progress, and is fixed on the last plane of plastic cement shell, and this mode can't be born bigger pressure.In actual applications, hold the battery case of a plurality of batteries, be subjected to the restriction of the structure and the size of environment for use, many batteries often all need battery is carried out two-layer or two-layer above stack, if between the two-layer up and down battery without any protection, the weight of upper strata battery will all be applied on two terminals of lower floor's battery, terminal not only needs to bear the own wt of upper strata battery, also need to bear the impulsive force of upper strata battery in driving, the lower cover of the loam cake of lower floor's battery or upper strata battery is impacted, be easy to occur battery pack and break, if in battery pack design, do not take all factors into consideration above-mentioned factor, be easy to occur fail safe hidden danger or.And consider above-mentioned factor, and then inevitably need between two-layer battery, increase the isolating and protecting layer, increased the difficulty of battery design and the expense of assembled battery.
Summary of the invention
Technical problem to be solved by this invention is to provide a kind of high capacity lithium ion battery group, be intended to solve foregoing existing in prior technology problem, increase the convenience of high capacity cell combination, improve the utilance of battery case inner space, solve the wiring problem of battery series connection.
The present invention is achieved in that a kind of high capacity lithium ion battery group, comprises cell, shell and both positive and negative polarity lead-out terminal; Described cell places described enclosure; One jiao of described shell upper branch has a recessed position; Described both positive and negative polarity lead-out terminal places on the described recessed position, and does not exceed the full-size of described shell.
Further, between the described both positive and negative polarity lead-out terminal notch is arranged, described notch is placed with the isolation baffle plate, and described isolation baffle plate is used to prevent that both positive and negative polarity is connected short circuit occurs.
Further, the height of described isolation baffle plate is higher than the height of described both positive and negative polarity lead-out terminal.
Further, a notch has wherein been reserved near the direction of the vertical wall of inboard battery pack in described recessed position.
Further, described shell comprises the loam cake of a L type, and after described recessed position added the above loam cake, the outstanding position of the L type of the notch of described reservation and loam cake matched, and whole casing is combined into a square integral body.
Further, described high capacity lithium ion battery group also comprises brace, and described brace is used to connect the two ends of series connection or each output electrode in parallel.
Further, the bottom of described loam cake has several electrode notches, and described electrode notch is the outlet of brace that is used to connect the both positive and negative polarity of battery.
Further, described isolation baffle plate has been reserved the vertical sampling notch of certain width near the inner vertically position of shell, and the voltage sampling signal line of battery pack draws described vertical sampling notch inside in.
Further, the both sides of described loam cake are reserved with vertical notch equally, and all voltage signal acquisition lines, Hide All and are isolated with the battery plus-negative plate terminal below described loam cake.
Further, described loam cake is made with the insulating material of resistance to pressure.
High capacity lithium ion battery group of the present invention, simple in structure, practical, the reliability height.Both can be applied to the battery pack design and produce, and be used for also can using the shell of monomer electricity core, be applied directly to single electric core production field, be with a wide range of applications battery assembling use in groups.
Description of drawings
Fig. 1 is the structure chart of prior art large-capacity battery pack;
Fig. 2 is the structure chart of the high capacity lithium ion battery group that provides of the embodiment of the invention;
Fig. 3 is the structure chart of loam cake in the high capacity lithium ion battery group that provides of the embodiment of the invention.
Embodiment
In order to make purpose of the present invention, technical scheme and advantage clearer,, the present invention is further elaborated below in conjunction with drawings and Examples.Should be appreciated that specific embodiment described herein only in order to explanation the present invention, and be not used in qualification the present invention.
As Fig. 2, shown in Figure 3, a kind of high capacity lithium ion battery group has comprised cathode output end 1, cathode output end 2, and battery pack 3.On the top of battery pack 3 one jiao adopts recessed design, and anode and cathode terminals 1 and 2 is placed on the position that recessed position is a groove.Between two electrodes, reserved the isolation baffle plate 6 between the electrode, wherein baffle plate 6 has been reserved a notch near the direction of the vertical wall of inboard battery pack.The periphery at whole recessed position is added with a L type loam cake 5, and groove part adds after the loam cake 5 that entire cell is combined into a square integral body.In the bottom of L type loam cake, have several notches, be used to connect the outlet of brace of the both positive and negative polarity of battery.
Further, described high capacity lithium ion battery group has connection in series-parallel and makes up advantage very easily.After battery was put in the same way, its both positive and negative polarity was close automatically successively, only brace need be placed to the output electrode two ends, and used nut to tighten to get final product.
Further, described high capacity lithium ion battery group has that cabling is clear, convenient fixing, lead does not exist because the advantage of extrusion short.Isolate baffle plate 6 near the inner vertically position of shell, reserved the vertical notch of certain width, the voltage sampling signal line of battery pack draws this notch inside in, and the voltage acquisition holding wire of whole battery group is all by this notch cabling.Be reserved with same vertical notch equally in the both sides of upper cover plate, all voltage signal acquisition lines, Hide All is below cover plate, and isolate with the battery plus-negative plate terminal, guaranteed that each sampling lead can not be under pressure yet, and be fixed in the trough of reservation, can improve the reliability of cabling greatly.
Further, described high capacity lithium ion battery group has and prevents that effectively the hidden danger of short circuit from appearring in same battery.When being placed into same recessed side for electrode, the height of added isolation baffle plate 6 between two electrodes, height greater than two output electrode terminals, even under the situation that does not add battery box cover 5, when the metallic conduction thing is placed on the battery, also can not cause battery short circuit, this design can improve battery assembling, transportation, the fail safe when using greatly.
Further, described high capacity lithium ion battery group has a plurality of stacked advantages up and down: because the top and bottom of battery are plane contact, all born by the sidewall of battery pack at the stressed of vertical direction between the battery, two planes that deformation take place easily are not subjected to bigger power up and down.Simultaneously because two anode and cathode terminals of described high capacity lithium ion battery group, do not have stressed, so also can improve the reliability of battery case greatly.
Further, described high capacity lithium ion battery group has the high advantage of space availability ratio.Because the terminal of battery pack has just taken very little a part of volume, the battery pack outside will no longer include the waste in space, can improve volume of battery energy ratio greatly, conversely, same volume can be installed more jumbo battery, also can improve the utilance of battery.Perhaps save the space of battery, can save the inner space of supporting car equally.
The above only is preferred embodiment of the present invention, not in order to restriction the present invention, all any modifications of being done within the spirit and principles in the present invention, is equal to and replaces and improvement etc., all should be included within protection scope of the present invention.
Claims (10)
1. a high capacity lithium ion battery group is characterized in that, comprises cell, shell and both positive and negative polarity lead-out terminal; Described cell places described enclosure; One jiao of described shell upper branch has a recessed position; Described both positive and negative polarity lead-out terminal places on the described recessed position, and does not exceed the full-size of described shell.
2. high capacity lithium ion battery group according to claim 1 is characterized in that, between the described both positive and negative polarity lead-out terminal notch is arranged, and described notch is placed with the isolation baffle plate, and described isolation baffle plate is used to prevent that both positive and negative polarity is connected short circuit occurs.
3. high capacity lithium ion battery group according to claim 2 is characterized in that the height of described isolation baffle plate is higher than the height of described both positive and negative polarity lead-out terminal.
4. high capacity lithium ion battery group according to claim 1 is characterized in that, a notch has wherein been reserved near the direction of the vertical wall of inboard battery pack in described recessed position.
5. high capacity lithium ion battery group according to claim 4, it is characterized in that described shell comprises the loam cake of a L type, after described recessed position adds the above loam cake, the outstanding position of the L type of the notch of described reservation and loam cake matches, and whole casing is combined into a square integral body.
6. high capacity lithium ion battery group according to claim 5 is characterized in that, described high capacity lithium ion battery group also comprises brace, and described brace is used to connect the two ends of series connection or each output electrode in parallel.
7. high capacity lithium ion battery group according to claim 6 is characterized in that, the bottom of described loam cake has several electrode notches, and described electrode notch is the outlet of brace that is used to connect the both positive and negative polarity of battery.
8. high capacity lithium ion battery group according to claim 2, it is characterized in that, described isolation baffle plate has been reserved the vertical sampling notch of certain width near the inner vertically position of shell, and the voltage sampling signal line of battery pack draws described vertical sampling notch inside in.
9. high capacity lithium ion battery group according to claim 5 is characterized in that the both sides of described loam cake are reserved with vertical notch equally, and all voltage signal acquisition lines, Hide All and are isolated with the battery plus-negative plate terminal below described loam cake.
10. high capacity lithium ion battery group according to claim 5 is characterized in that described loam cake is made with the insulating material of resistance to pressure.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013101235387A CN103219477A (en) | 2013-04-11 | 2013-04-11 | High-capacity lithium ion battery pack |
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| Application Number | Priority Date | Filing Date | Title |
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| CN2013101235387A CN103219477A (en) | 2013-04-11 | 2013-04-11 | High-capacity lithium ion battery pack |
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| CN103219477A true CN103219477A (en) | 2013-07-24 |
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| CN2013101235387A Pending CN103219477A (en) | 2013-04-11 | 2013-04-11 | High-capacity lithium ion battery pack |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN104851991A (en) * | 2014-02-19 | 2015-08-19 | 台达电子工业股份有限公司 | Cell and Manufacture Method Thereof |
| CN106208312A (en) * | 2016-09-13 | 2016-12-07 | 上海展枭新能源科技有限公司 | A kind of lithium-ion capacitor starts power-supply system and device thereof |
| CN110021777A (en) * | 2018-01-08 | 2019-07-16 | 比亚迪股份有限公司 | Pole piece, battery unit, battery modules and automobile |
| CN115036651A (en) * | 2022-06-28 | 2022-09-09 | 海口安博尔能源技术开发有限公司 | Lithium ion battery energy storage system for industrial-grade water hydrogen production |
| CN115207530A (en) * | 2021-04-13 | 2022-10-18 | 三星Sdi株式会社 | Battery with a battery cell |
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| JP2012009319A (en) * | 2010-06-25 | 2012-01-12 | Hitachi Vehicle Energy Ltd | Secondary battery and battery pack |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN104851991A (en) * | 2014-02-19 | 2015-08-19 | 台达电子工业股份有限公司 | Cell and Manufacture Method Thereof |
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| CN110021774B (en) * | 2018-01-08 | 2021-02-23 | 比亚迪股份有限公司 | Pole core, battery unit, battery module and car |
| CN110021777B (en) * | 2018-01-08 | 2021-03-26 | 比亚迪股份有限公司 | Pole core, battery unit, battery module and car |
| CN110021775B (en) * | 2018-01-08 | 2021-04-20 | 比亚迪股份有限公司 | Pole core, battery unit, battery module and car |
| CN115207530A (en) * | 2021-04-13 | 2022-10-18 | 三星Sdi株式会社 | Battery with a battery cell |
| CN115036651A (en) * | 2022-06-28 | 2022-09-09 | 海口安博尔能源技术开发有限公司 | Lithium ion battery energy storage system for industrial-grade water hydrogen production |
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Application publication date: 20130724 |