CN103208603A - Heavy-load-discharge cylindrical battery pack - Google Patents
Heavy-load-discharge cylindrical battery pack Download PDFInfo
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- CN103208603A CN103208603A CN2013101239975A CN201310123997A CN103208603A CN 103208603 A CN103208603 A CN 103208603A CN 2013101239975 A CN2013101239975 A CN 2013101239975A CN 201310123997 A CN201310123997 A CN 201310123997A CN 103208603 A CN103208603 A CN 103208603A
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- cylindrical battery
- battery group
- bonding pad
- battery
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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 invention is applicable to the technical field of battery packs, and provides a heavy-load-discharge cylindrical battery pack which comprises a plurality of cylindrical batteries, a welding film and a shell, wherein the cylindrical batteries are connected in parallel in a manner that the cylindrical batteries are arranged at intervals in parallel to form the cylindrical battery pack; the output ends of the positive and negative poles of the cylindrical battery pack are respectively connected with the welding film; and the shell is used for loading the cylindrical battery pack. The cylindrical battery pack provided by the invention can be conveniently applied to large-capacity and large-current occasions, and the problem of heat dissipation is solved.
Description
Technical field
The invention belongs to the battery pack technical field, be applicable to the cylindrical battery of using as fields such as automobile power cell, energy-storage batteries, be specially adapted to the cylindrical battery group of heavy-current discharge.
Background technology
At present, cylindrical battery has shape criteriaization, being convenient to standard batch production has obtained using widely, along with maturation, the cylindrical battery of battery production technology is widely used in fields such as electric tool, electric automobile, stored energy application, and require more high voltage and more jumbo battery pack.
Cylindrical battery combination at present mainly contains following several mode:
1, entire combination mode: battery directly carries out the connection in series-parallel combination, again battery pack is placed in the battery case, the battery combination mode of this mode, have simple in structure, the advantage of combined and instant, but since whole connection in series-parallel after battery be structure as a whole, so, the performances such as anti-vibration ability of low, the whole Battery pack of the insulation property between the battery are all lower, generally speaking, relatively are suitable for the mode of the few battery combination of low voltage and number of batteries.
2, single Battery pack box mode: this mode adopts is that battery with a plurality of low capacities carries out parallel connection, constitutes the 3.2V battery pack of an integral body, and these batteries are placed in the integral battery door box.The battery of this mode has the standardized production of being convenient to, and compound mode is simple, the advantage that insulation property are good, the anti-vibration ability strong, be convenient to change.Weak point is that this battery adopts the battery of enclosed construction usually, and for high-capacity battery, particularly the battery of big discharging current is easy to generate the heat accumulation phenomenon, is not suitable for the heavy-current discharge applications.
Therefore, there is defective in prior art, needs to improve.
Summary of the invention
The object of the present invention is to provide a kind of cylindrical battery combining structure mode in groups, use the electric core of a plurality of low capacities, constitute a high capacity cell, this structure is used the design of semi-open property, conveniently be applied to big capacity, big electric current application scenario, solved the radiating treatment problem.
The present invention realizes like this, a kind of cylindrical battery group that can heavy-current discharge, comprise that some cylindrical batteries, bonding pad and shell constitute, wherein, described cylindrical battery also is unified into the cylindrical battery group, and the mode that adopts each described cylindrical battery to place at interval when in parallel is carried out parallel connection; The both positive and negative polarity output of described cylindrical battery group joins with described bonding pad respectively; Described shell is used for adorning described cylindrical battery group.
Described cylindrical battery group, wherein, described and cylindrical battery group also comprises copper sheet, described copper sheet is fixed on the described bonding pad, is used for enlarging the electric current of both positive and negative polarity.
Described cylindrical battery group, wherein, described side insulation plate and the insulation upper casing of comprising; Described side insulation plate is two, and described insulation upper casing is one, and the shell that described side insulation plate and described insulation upper casing are formed is semi-open structure.
Described cylindrical battery group wherein, has several through holes on the described side insulation plate, and the position of described through hole is corresponding with the gap of described cylindrical battery group, is used for the circulation of air of described cylindrical battery group inside.
Described cylindrical battery group, wherein, described bonding pad is the bonding pad of nickel or copper steel composite band material.
Described cylindrical battery group, wherein, described bonding pad has rectangular-shaped fluting and ventilating opening;
Described fluting is used for improving the welding effect between bonding pad and the cylindrical battery group, reduces the connection resistance between bonding pad and the cylindrical battery;
Described ventilating opening is used for improving the result of ventilating heat dissipation between the cylindrical battery.
Described cylindrical battery group wherein, has macropore and aperture on the described copper sheet; The position of opening of described macropore is concentric with the fluting in the described bonding pad, and the size of described macropore is greater than the size of described fluting; The position of described aperture is corresponding with the position of ventilating opening in the described bonding pad.
Described cylindrical battery group, wherein, the anode and cathode terminals that described cylindrical battery group is drawn and described bonding pad, described copper sheet are riveted together, as the output of described cylindrical battery group.
Described cylindrical battery group, wherein, described copper sheet can substitute with the lead-out terminal of integrated bending.
Described cylindrical battery group, wherein, described cylindrical battery and the cylindrical battery group that is unified into are the cylindrical battery group of hollow.
The present invention compared with prior art, beneficial effect is:
1, described cylindrical battery group is simple in structure, and entire cell makes up easily, and is time saving and energy saving, enhances productivity.
2, described cylindrical battery group is very easy to heat radiation, is fit to heavy-current discharge.Battery is semi-open structure, is that battery directly exposes around the inside of battery case, and the side has the hole, equally can be so that the heat of the battery at battery case center accumulation can in time come out.Compare the battery pack of big capacity electricity core independently or closed structure, this mode biggest advantage is that battery dispels the heat easily, the battery heat that has particularly solved the battery pack center is difficult to distribute, each different electric core temperature is inconsistent, cause battery pack internal cell condition of work inconsistent, the inconsistent problem of cell decay.
3, the battery mould development cost are low, the battery container good stability.With respect to traditional enclosed construction battery case, its lower casing partly is a deep trouth, and this battery case is darker owing to groove, the development cost height of mould, and also distortion appears in the housing of deep trouth edge suitable for reading easily.
4, described cylindrical battery group secondary is convenient in groups: battery case of the present invention, reserved secondary internal structure in groups, and at the secondary that carries out battery in groups the time, only need simply make up and get final product.And the adjacent cell both positive and negative polarity is connected in series very conveniently, only needs to use that screw rod is fastening to get final product.
5, battery pack internal resistance in combination back is little, with respect to the big capacity electricity of monomer core, or conventional enclosed type compound mode, and compound mode of the present invention, it is simple to have an inner brace, and internal resistance is little; Because the brace between the battery pack has adopted large-area connected mode, also greatly reduce the connection contact resistance of battery again.Under the big electric current operating position of battery pack, can improve the serviceability of battery greatly.
6, the insulation property of battery have been improved: because the battery container edge designs has bigger spacing, has certain clearance between the adjacent cell equally, add each sampled signal line and the connection in series-parallel brace of inside battery, it all is the mode that adopts the plastic casing below of the below that is hidden in upper casing, strengthen the insulation property of battery pack, improved reliability and fail safe that battery uses.
Description of drawings
Fig. 1 is the integrally-built explosive view of cylindrical battery group of the present invention;
Fig. 2 is the project organization figure of bonding pad in the cylindrical battery group of the present invention;
Fig. 3 is the project organization figure of copper sheet in the cylindrical battery group of the present invention;
Fig. 4 is the structure chart of bonding pad, copper bar and the lead-out terminal of lead-out terminal of the present invention and battery after compound;
Fig. 5 is the structure chart of the positive and negative both direction of side plastic casing of cylindrical battery group of the present invention;
Fig. 6 is the structure chart of the top plastic casing of cylindrical battery group of the present invention;
Fig. 7 is the overall diagram of cylindrical battery group of the present invention;
Fig. 8 is the structural representation of a plurality of battery series connection of the present invention.
Embodiment
In order to make purpose of the present invention, technical scheme and advantage clearer, below in conjunction with drawings and Examples, the present invention is further elaborated.Should be appreciated that specific embodiment described herein only in order to explaining the present invention, and be not used in restriction the present invention.
The present invention is applicable to the parallel connection of columniform low capacity electricity core, is assembled into a jumbo battery.Perhaps in same battery plastic casing, constitute one two high capacity cell more than the string.
As shown in Figure 1, be that to constitute a high capacity cell with a plurality of low capacities electricity cores be example, the blast structure chart of this battery of design.Each parts correspondence among the figure is described as follows: 1 is cylindrical battery and the cylindrical battery group that is unified into, is the structure of directly being carried out the high capacity cell that parallel connection constitutes by a plurality of batteries.2 is bonding pad, with the positive pole of the battery of battery pack inside and the bonding pad that negative pole is welded into type.3 for expanding the copper sheet of stream usefulness, makes both positive and negative polarity can pass through bigger electric current.4 is the side plastic casing, and namely the side insulation plate is placed on the battery side plastic casing of both direction end to end.5 is the plastic cement upper casing, and upper casing namely insulate.6 copper bars for output usefulness, the both positive and negative polarity lead-out terminal of battery.7 is plastic rubber bracket.8 is clamp nut, is used for the series connection sheet between fastening output copper bar and the battery.9 is fastening bolt, is used for two side plastic casings and whole battery group are fastening as a whole.10 is clamp nut, cooperates fastening usefulness with 9.Wherein plastic cement upper casing 5 and two fastening screws of side housing do not identify.
The explosive view of Fig. 1 can be described the contact method of the inside and outside of whole battery group, below in conjunction with the content of Fig. 1 and the figure of various piece separately, the scheme that design of the present invention is implemented is carried out careful description.
1 part is for constituting the core of battery among Fig. 1, what adopt among Fig. 1 of the present invention is that a plurality of cylindrical batteries carry out mode in parallel, what adopt among the figure is the mode that each battery interval is placed, be not to be compact arranged mode between the electric core, the advantage of this arrangement mode is to have certain clearance between each battery, can effectively reduce the thermal accumlation when battery operated, cooperate the back to connect the design of sheet material and battery container, can effectively carry out radiating treatment to battery.Under the situation of big especially electric current, will adopt the distance that strengthens between the electric core, and the battery at center is removed more than one, the passage as ventilating reaches better radiating effect.
Among Fig. 12 shown in part be the bonding pad of nickel or copper steel composite band material, Fig. 2 is the actual graphical of bonding pad, two parts end to end that this is placed into battery cover the ground floor of battery case positive and negative end.The profile of bonding pad cuts according to the combined shaped of battery, and the thickness of bonding pad can be 0.1-0.5mm, selects according to the operating current of concrete battery.In the bonding pad position corresponding with battery, namely the fluting shown in 2.1 among Fig. 2 is in order to improve the welding effect between bonding pad and the electric core, to reduce the connection resistance between bonding pad and the battery, having adopted fluting or fluting to add the mode of raising point; Position among Fig. 2 shown in 2.2, design has the ventilating opening of more than one circle or other shapes, improves the result of ventilating heat dissipation between the battery.
Among Fig. 13 the indication be copper sheet, true form as shown in Figure 3, the thickness of this copper sheet is selected according to the operating current of battery.Have big hole 3.1 on the copper strips, the fluting shown in 2.1 among the position in this hole and Fig. 2 is concentric, and the size in hole can come out 2.1 fluting, is used for spot welding machine bonding pad 2 is welded to battery end to end.Each hole among Fig. 3 shown in 3.2 is the ventilating opening corresponding with 2.3 the hole of Fig. 2, and 3.1 hole is designed to diameter identical with 2.1 bore dia or that be slightly larger than 2.1 holes and gets final product.Bonding pad shown in Figure 2 and copper sheet shown in Figure 3 use the technology of laser welding, ultra-sonic welded, spot welding or use rivet between the two, and bonding pad is connected together with copper sheet.
Shown in 6 among Fig. 1, be the both positive and negative polarity electric current leading-out terminal of battery, for convenience of description, among Fig. 4, bonding pad 2, copper sheet 3 and lead-out terminal 6 are made the integral body of a practicality.4.1 indications among Fig. 4 are the screw fastener hole of electric current leading-out terminal, and the hole of the nut shown in 7 is corresponding among the position in this hole and Fig. 1.The position of 4.2 indications among the figure, a plurality of holes for corresponding with 3 through hole utilize centre bore, lead-out terminal and copper sheet, bonding pad can be riveted together, and finish the function with battery current output.Fig. 4 is the final effect of several hardwares, in actual the use, under the smaller situation of the operating current of needs, the lead-out terminal of copper sheet 3 straight formings or an one-body molded bending can be replaced existing output copper bar.
As 4 among Fig. 1 be the plastic casing of two sides, its overall structure as shown in Figure 5, among the figure shown in 5.1 is through hole on the plastic casing, distribution situation is corresponding with 2.2 hole with the slit of 2.1 among Fig. 2.5.2 shown position is the position that fastening screw is designed on every limit, can design more than one hole on each limit, is used for fastening to the plastic casing mechanical energy of both sides.5.3 shown position is the fastening screens in groups the time for a plurality of same battery reserved, uses U-shaped groove screens to be blocked and used bolt up and down carry out fastening.5.4 shown position is through hole, is used for using self-tapping screw that upper casing and two side housings are fastened to together.The back side of whole housing is a groove, and battery pack is placed in the groove at the back side.
Shown in 5 among Fig. 1, be the plastic cement upper casing of battery, upper casing inside is taken out shell in the bottom to housing, constitutes the space of bottom.Need to prove that wherein 6.1 refer to four perpendicular to the fluting of two battery sides, this fluting is used for along perpendicular to the direction of battery battery being drawn the both positive and negative polarity brace.6.2 be depicted as the inner lead cabling space of battery, can be with the internal signal wire of battery pack, cabling below cell cover.6.3 shown position is the reservation fluting that two directions along the long end of cell cover are drawn battery series connection brace.6.4 shown position is for reserving the screw hole position of fastening cell cover to two a side plastic casing.
As shown in Figure 7, be the appearance graphic of entire cell, can see whole battery group in good order.
As shown in Figure 8, be 12 design sketchs after the described cylindrical battery group series connection.This housing only need simply be adjusted, can constitute the battery pack of two strings, three strings or four strings.
The above only is preferred embodiment of the present invention, not in order to limiting the present invention, all any modifications of doing 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. the cylindrical battery group of a heavy-current discharge, comprise that some cylindrical batteries, bonding pad and shell constitute, it is characterized in that described cylindrical battery also is unified into the cylindrical battery group, the mode that adopts each described cylindrical battery to place at interval when in parallel is carried out parallel connection; The both positive and negative polarity output of described cylindrical battery group joins with described bonding pad respectively; Described shell is used for loading described cylindrical battery group.
2. cylindrical battery group according to claim 1 is characterized in that, described and cylindrical battery group also comprises copper sheet, and described copper sheet is fixed on the described bonding pad, is used for enlarging the electric current of both positive and negative polarity.
3. cylindrical battery group according to claim 1 is characterized in that, described side insulation plate and the insulation upper casing of comprising; Described side insulation plate is two, and described insulation upper casing is one, and the shell that described side insulation plate and described insulation upper casing are formed is semi-open structure.
4. cylindrical battery group according to claim 3 is characterized in that, has several through holes on the described side insulation plate, and the position of described through hole is corresponding with the gap of described cylindrical battery group, is used for the circulation of air of described cylindrical battery group inside.
5. cylindrical battery group according to claim 1 is characterized in that, described bonding pad is the bonding pad of nickel or copper steel composite band material.
6. cylindrical battery group according to claim 2 is characterized in that, described bonding pad has rectangular-shaped fluting and ventilating opening;
Described fluting is used for improving the welding effect between bonding pad and the cylindrical battery group, reduces the connection resistance between bonding pad and the cylindrical battery;
Described ventilating opening is used for improving the result of ventilating heat dissipation between the cylindrical battery.
7. cylindrical battery group according to claim 6 is characterized in that, has macropore and aperture on the described copper sheet; The position of opening of described macropore is concentric with the fluting in the described bonding pad, and the size of described macropore is greater than the size of described fluting; The position of described aperture is corresponding with the position of ventilating opening in the described bonding pad.
8. cylindrical battery group according to claim 2 is characterized in that, the anode and cathode terminals that described cylindrical battery group is drawn and described bonding pad, described copper sheet are riveted together, as the output of described cylindrical battery group.
9. cylindrical battery group according to claim 2 is characterized in that, described copper sheet selects for use the lead-out terminal of one-body molded bending to substitute.
10. cylindrical battery group according to claim 1 is characterized in that, described cylindrical battery and the cylindrical battery group that is unified into are the cylindrical battery group of hollow.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013101239975A CN103208603A (en) | 2013-04-11 | 2013-04-11 | Heavy-load-discharge cylindrical battery pack |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013101239975A CN103208603A (en) | 2013-04-11 | 2013-04-11 | Heavy-load-discharge cylindrical battery pack |
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| CN103208603A true CN103208603A (en) | 2013-07-17 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN2013101239975A Pending CN103208603A (en) | 2013-04-11 | 2013-04-11 | Heavy-load-discharge cylindrical battery pack |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106169546A (en) * | 2016-08-29 | 2016-11-30 | 华霆（合肥）动力技术有限公司 | A kind of die-filling group of set of cells |
| CN106207243A (en) * | 2015-05-05 | 2016-12-07 | 马军 | A kind of module assembly of 18650 lithium batteries |
| CN107732052A (en) * | 2016-08-10 | 2018-02-23 | 深圳市沃特玛电池有限公司 | A kind of electric automobile chassis structure |
| CN107719137A (en) * | 2016-08-10 | 2018-02-23 | 深圳市沃特玛电池有限公司 | A kind of electric automobile chassis structure |
| CN107768584A (en) * | 2016-08-22 | 2018-03-06 | 光阳工业股份有限公司 | Battery modules |
| CN110582870A (en) * | 2017-08-03 | 2019-12-17 | 宝马股份公司 | Battery module and battery module stack for a motor vehicle |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102623736A (en) * | 2011-01-30 | 2012-08-01 | 北京利维能电源设备有限公司 | Battery module and battery module group |
-
2013
- 2013-04-11 CN CN2013101239975A patent/CN103208603A/en active Pending
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102623736A (en) * | 2011-01-30 | 2012-08-01 | 北京利维能电源设备有限公司 | Battery module and battery module group |
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106207243A (en) * | 2015-05-05 | 2016-12-07 | 马军 | A kind of module assembly of 18650 lithium batteries |
| CN107732052A (en) * | 2016-08-10 | 2018-02-23 | 深圳市沃特玛电池有限公司 | A kind of electric automobile chassis structure |
| CN107719137A (en) * | 2016-08-10 | 2018-02-23 | 深圳市沃特玛电池有限公司 | A kind of electric automobile chassis structure |
| CN107768584A (en) * | 2016-08-22 | 2018-03-06 | 光阳工业股份有限公司 | Battery modules |
| CN106169546A (en) * | 2016-08-29 | 2016-11-30 | 华霆（合肥）动力技术有限公司 | A kind of die-filling group of set of cells |
| CN106169546B (en) * | 2016-08-29 | 2018-11-23 | 华霆（合肥）动力技术有限公司 | A kind of die-filling group of battery pack |
| CN110582870A (en) * | 2017-08-03 | 2019-12-17 | 宝马股份公司 | Battery module and battery module stack for a motor vehicle |
| US11196109B2 (en) | 2017-08-03 | 2021-12-07 | Bayerische Motoren Werke Aktiengesellschaft | Battery module and battery module stack for a motor vehicle |
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Application publication date: 20130717 |