CN110518170B - Modular battery PACK box - Google Patents
Modular battery PACK box Download PDFInfo
- Publication number
- CN110518170B CN110518170B CN201910932093.4A CN201910932093A CN110518170B CN 110518170 B CN110518170 B CN 110518170B CN 201910932093 A CN201910932093 A CN 201910932093A CN 110518170 B CN110518170 B CN 110518170B
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- battery cell
- battery
- frame body
- spacer
- fixing
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M10/00—Secondary cells; Manufacture thereof
- H01M10/60—Heating or cooling; Temperature control
- H01M10/61—Types of temperature control
- H01M10/613—Cooling or keeping cold
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M10/00—Secondary cells; Manufacture thereof
- H01M10/60—Heating or cooling; Temperature control
- H01M10/65—Means for temperature control structurally associated with the cells
- H01M10/655—Solid structures for heat exchange or heat conduction
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M10/00—Secondary cells; Manufacture thereof
- H01M10/60—Heating or cooling; Temperature control
- H01M10/65—Means for temperature control structurally associated with the cells
- H01M10/655—Solid structures for heat exchange or heat conduction
- H01M10/6556—Solid parts with flow channel passages or pipes for heat exchange
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M10/00—Secondary cells; Manufacture thereof
- H01M10/60—Heating or cooling; Temperature control
- H01M10/65—Means for temperature control structurally associated with the cells
- H01M10/656—Means for temperature control structurally associated with the cells characterised by the type of heat-exchange fluid
- H01M10/6561—Gases
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
- H01M50/20—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
- H01M50/50—Current conducting connections for cells or batteries
- H01M50/502—Interconnectors for connecting terminals of adjacent batteries; Interconnectors for connecting cells outside a battery casing
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
- H01M50/50—Current conducting connections for cells or batteries
- H01M50/531—Electrode connections inside a battery casing
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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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- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Electrochemistry (AREA)
- General Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Connection Of Batteries Or Terminals (AREA)
Abstract
The invention discloses a combined battery PACK box body, which comprises a plurality of monomer battery cores and battery core frame bodies, wherein the monomer battery cores are mutually connected in series, each monomer battery core is arranged in the battery core frame body, each battery core frame body is mutually assembled in parallel, two outermost ends of each battery core frame body are respectively provided with a fixed separation blade, four end angles of each fixed separation blade are respectively connected with each other through an angle iron connecting strip, a right-angle fixed part of each angle iron connecting strip is clamped on the four end angles of each battery core frame body, and two end parts of each angle iron connecting strip are fixedly connected with the fixed separation blades; one side surface of the battery cell frame body is of an opening structure, two lead-out grooves used for leading out the positive and negative electrode lugs of the single battery cells are arranged on one side of the top end of the battery cell frame body close to the opening direction, and meanwhile, a spacer is arranged between every two adjacent battery cell frame bodies. The invention has the advantages of convenient assembly, strong deformation resistance, strong anti-interference capability, good heat dissipation performance and the like, and can greatly improve the consistency of the whole assembled battery.
Description
Technical Field
The invention relates to a battery PACK box body, in particular to a combined battery PACK box body.
Background
The PAC K single cells have relatively low voltage and electric quantity, cannot meet the application requirements of an energy storage system and a storage battery of an electric automobile, and a plurality of PAC K single cells need to be connected in series to form a high-voltage-grade storage battery pack string. And for the convenience of carrying, save space and can carry out effectual protection to battery PACK, more and more battery PACK is installed in the PACK box.
At present, the conventional PACK box body is formed by putting a single battery cell into a battery cell frame body, then paralleling the battery cell frame bodies one by one together, arranging separation blades at two ends, and then serially connecting the separation blades and each battery cell frame body together by using long bolts at four corners. However, the PACK box structure with a fixed structure has the following defects:
(1) stability inadequately, long bolt support nature is not good, and flexible deformation is easily carried in the handling, leads to the electrode connection piece of interconnect electricity core in the electric core framework (electrode connection piece is through the screw fixation) to take place the micro-deformation, leads to the unable compaction condition, and then leads to electric core resistivity inconsistent, and the resistivity inconsistent can influence the uniformity of whole group battery (PACK), and the uniformity well appears the deviation (usually the deviation of allowing can not exceed 5%) and can influence the normal use of group battery.
(2) Generally, in an assembly process, a single battery cell is arranged in a battery cell frame, then each battery cell frame is assembled in parallel, and after the frame is assembled, positive and negative electrode lugs of adjacent battery cells are connected through a conductive connecting sheet so as to realize series connection of the battery cells. However, the positive and negative electrode tabs of the single battery cell extend upwards from the top end of the battery cell, and the positive and negative electrode tabs of the battery cell do not extend upwards along two side surfaces of the battery cell, that is, the bottom of the positive and negative electrode tabs is left with a certain margin from the side surface of the battery cell, so that after the positive and negative electrode tabs are bent and connected, a certain margin without any object support is left between the bottom of the positive and negative electrode tabs and the battery cell frame body, and therefore, once the battery cell frame body vibrates, deforms and the like in the carrying process or shakes and the like in the using process, the positive and negative electrode tabs of people are easily deformed or are connected and loosened, and the electrical resistivity of the battery cell is directly changed under the conditions, so that the consistency of the whole assembled battery is influenced.
(3) The resistivity of the conductive connecting sheet is different from the resistivity of the battery cell tab (the internal resistance of the battery cell is small), so that the resistivity of the conductive connecting sheet is difficult to ensure to be consistent with that of the battery cell tab, and the consistency of the whole combined battery is influenced.
Disclosure of Invention
In order to overcome the problems in the prior art, the invention provides a combined battery PACK box body.
The technical scheme adopted by the invention is as follows: a combined battery PACK box comprises a plurality of single battery cells and a battery cell frame body, wherein the single battery cells are mutually connected in series, each single battery cell is arranged in the battery cell frame body, each battery cell frame body is mutually assembled in parallel, two ends of the outermost side of the battery cell frame body are respectively provided with a fixed separation blade, four end corners of the two fixed separation blades are mutually connected through an angle iron connecting strip, a right-angle fixed part of the angle iron connecting strip is clamped on the four end corners of the battery cell frame body, and the end parts of the two ends of the angle iron connecting strip are fixedly connected with the fixed separation blades; one side surface of the battery cell frame body is of an opening structure, two lead-out grooves used for leading out the positive and negative electrode lugs of the single battery cells are arranged on one side of the top end of the battery cell frame body close to the opening direction, and meanwhile, a spacer is arranged between every two adjacent battery cell frame bodies.
Furthermore, the right angle edges of the four end corners of the battery cell frame body are provided with mounting grooves, and the right angle fixing parts of the angle iron connecting strips are embedded in the mounting grooves.
Furthermore, four end corners of the fixed separation blade are provided with fixing convex blocks protruding outwards, two ends of the angle iron connecting strip are provided with fixing claws which are matched and connected with the fixing convex blocks, and the fixing convex blocks are connected with the fixing claws through screws.
Furthermore, the fixed separation blade and the angle iron connecting strip are made of stainless steel materials, and a supporting seat is arranged at the bottom of the fixed separation blade.
Furthermore, the top both sides of spacer are equipped with the fixed boss that outwards stretches out, the spacer assembles the back with electric core framework side by side, and the fixed boss embedding of spacer draws forth the inslot of electric core framework.
Further, the protrusion length of fixed boss and the sunken degree of depth of drawing forth the groove all keep unanimous with between the utmost point ear bottom of monomer electricity core and the side of monomer electricity core, after monomer electricity core installation, draw forth the bottom of groove and the utmost point ear clamp with monomer electricity core between the two with the top of fixed boss to the bottom of drawing forth the groove pushes up respectively in the utmost point ear bottom of monomer electricity core with the top of fixed boss.
Furthermore, one side of the top of each spacer is provided with an upward extending spacing bulge, the two adjacent spacers are arranged in opposite directions, and the spacing bulges on the juxtaposed rear spacers are arranged in a front-back alternating manner.
Furthermore, the top of electric core framework is equipped with the mount table that is used for two monomer electric core positive and negative pole ears of fixed connection, the mount table is located lead-out groove one side to be equipped with the screw that is used for fixed positive and negative pole ear and connection piece on the mount table.
Further, the positive tab and the negative tab of adjacent monomer electricity core concatenate according to the preface and positive tab and negative tab direct contact connect, and positive, negative tab after the contact connection passes through the connection piece to be fixed in electric core framework, and the connection piece here can adopt conducting material also can adopt insulating material, preferred insulating material.
Furthermore, heat dissipation holes and concave-convex ventilation channels are arranged on the side surfaces of the battery cell frame body and the spacer; the fixed baffle is provided with heat dissipation holes.
The invention has the following beneficial effects:
(1) the battery PACK is fixedly connected through the angle iron connecting strips, so that the problems that the original long bolt is poor in supporting performance and easy to bend and deform in the carrying process are solved, and the stability of the battery PACK is greatly improved.
(2) The invention adopts the connection mode of the angle iron connecting strips and the fixed separation blades, the assembly is convenient and quick, bolt holes do not need to be formed in the battery cell frame body, the angle iron connecting strips are only clamped on the four end corners of the battery cell frame body, and then the angle iron connecting strips and the fixed separation blades are fixed, the tedious steps that the bolt holes in the battery cell frame body are aligned one by one and then long bolts are inserted are overcome, and once the bolt holes in one frame body are not aligned, the long bolts are difficult to be completely inserted, and meanwhile, the long bolts are inserted into the four end corners of the battery cell frame body, namely the bolt holes are aligned four times, the operation is tedious, and the manual assembly cost is increased.
(3) According to the battery cell frame, the mounting grooves are formed in the right-angle edges of the four end angles of the battery cell frame, and the right-angle fixing parts of the angle iron connecting strips are embedded in the mounting grooves, so that the end faces of the two right-angle edges of the angle iron connecting strips can be abutted against the groove edges of the mounting grooves, the stability of the whole box body after mounting is greatly improved, the battery cell frame body in the box body cannot be easily displaced, the electrode connecting sheets of the battery cells cannot be slightly deformed and cannot be compacted, and the consistency of the whole battery pack is greatly improved.
(4) According to the invention, by arranging the lead-out groove and the fixing boss, when the single battery cell is installed, the lugs of the single battery cell are clamped between the bottom end of the lead-out groove and the top end of the fixing boss, and the bottom end of the lead-out groove and the top end of the fixing boss are respectively propped against the bottoms of the lugs of the single battery cell, so that the connection stability of the lugs of the battery cell can be greatly improved, and the situation that the lugs are deformed to cause the resistivity of the battery cell to change so as to influence the consistency of the whole combined battery is avoided.
(5) According to the invention, the interval bulge is arranged on one side of the top of the spacer, so that the interference between every two lug connection points can be avoided, and the stability is improved.
(6) According to the invention, the positive electrode lug and the negative electrode lug are in direct contact connection, and the original mode of connecting the positive electrode lug and the negative electrode lug of the battery cell by adopting the conductive connecting sheet is cancelled, so that the problem that the resistivity of the conductive connecting sheet is different from that of the battery cell lug is solved, and the consistency of the whole combined battery is improved and ensured.
(7) According to the battery cell frame body, the spacer and the fixed blocking piece are provided with the heat dissipation holes and the ventilation channel, so that heat dissipation of a battery cell can be facilitated, the heat dissipation performance is improved, and the weight of the whole battery pack can be reduced.
Drawings
Fig. 1 is a schematic structural diagram of the assembled cell frame.
Fig. 2 is a connection schematic of the fixing blocking piece and the angle iron connecting strip.
Fig. 3 is a schematic view of the cell frame and the spacer after the cell is mounted.
Fig. 4 is a schematic structural diagram of the cell frame body.
FIG. 5 is a schematic view of the structure of the spacer.
Fig. 6 is a schematic structural diagram of a single cell.
Labeled in the figure as: 1-single cell, 2-cell frame, 3-fixed block, 4-angle iron connecting strip, 5-spacer, 6-fixed lug, 7-fixed claw, 8-support seat, 9-tab, 10-lead-out groove, 11-fixed boss, 12-mounting table, 13-screw hole, 14-heat dissipation hole, 15-ventilation channel, 16-spacing bump and 17-mounting groove.
Detailed Description
The invention is described in detail below with reference to the figures and the specific embodiments.
As shown in fig. 1 to 6, a combined battery PACK box includes a plurality of single battery cells 1 and a battery cell frame 2, the single battery cells 1 are connected in series, each single battery cell 1 is installed in the battery cell frame 2, the battery cell frames 2 are assembled in parallel, two outermost ends of the battery cell frame 2 are respectively provided with a fixed stop piece 3, four end corners of the two fixed stop pieces 3 are respectively connected with each other through an angle iron connecting strip 4, a right-angle fixed part of the angle iron connecting strip 4 is clamped on the four end corners of the battery cell frame 2, and two end parts of the angle iron connecting strip 4 are fixedly connected with the fixed stop pieces 3; one side surface of the battery cell frame body 2 is of an opening structure, two lead-out grooves 10 used for leading out positive and negative electrode lugs of the monomer battery cell 1 are arranged on one side of the top end of the battery cell frame body close to the opening direction, and meanwhile, a spacer 5 is arranged between every two adjacent battery cell frame bodies 2.
In this embodiment, four extreme angles departments of fixed separation blade 3 are equipped with outside convex fixed lug 6, the both ends of angle bar connecting strip 4 are equipped with the stationary dog 7 of being connected with fixed lug 6 mutually supporting, fixed lug 6 and stationary dog 7 pass through the screw and link together, through this fixed mode both convenient equipment also convenient dismantlement. In addition, right-angle edges of four end corners of the battery cell frame body 2 are provided with right-angle mounting grooves 17, and right-angle fixing parts of the angle iron connecting strips 4 are embedded in the mounting grooves 17; two right angle limit terminal surfaces of angle bar connecting strip 4 can push up on the groove edge of mounting groove 17 like this, and then have improved the steadiness of whole box and the uniformity of group battery after the installation greatly.
In this embodiment, the top both sides of spacer 5 are equipped with outside fixed boss 11 that stretches out, spacer 5 and electric core framework 2 assemble the back side by side, and spacer 5's fixed boss 11 imbeds in electric core framework 2's the groove 10 of drawing forth. And the protruding length of fixed boss 11 and the sunken degree of depth of drawing groove 10 all keep unanimous with distance between the utmost point ear bottom of monomer electricity core 1 and the side of monomer electricity core 1, after monomer electricity core 1 installation, draw the utmost point ear 9 clamp of bottom and the top of fixed boss 11 with monomer electricity core 1 of groove 10 between the two to the utmost point ear bottom of drawing groove 10 and the top of fixed boss 11 top respectively in monomer electricity core 1. Simultaneously, the top end of the battery cell frame body 2 is also provided with an installation table 12 for fixedly connecting the positive and negative electrode lugs of the two monomer battery cells 1, the installation table 12 is positioned on one side of the lead-out groove 10, a screw hole 13 for fixing the positive and negative electrode lugs and the connecting sheet is arranged on the installation table 12, the positive and negative electrode lugs are respectively buckled and lapped on the installation table 12 towards one side, then the connecting sheet is arranged above the positive and negative electrode lugs, the positive and negative electrode lugs are connected in series through the connecting sheet, and the lug and the connecting sheet are fixed on the installation table 12 by screwing the screw hole through screws.
As a preferred connection mode, the positive electrode tab and the negative electrode tab of the adjacent monomer battery cells 1 are in direct contact connection, and the positive electrode tab and the negative electrode tab after the contact connection are fixed on the battery cell frame 2 through a connecting piece (not shown in the figure), where the connecting piece may be made of a conductive material or an insulating material, preferably an insulating material; the positive tab and the negative tab are in direct contact connection, so that the problem that the resistivity of the conductive connecting sheet is different from that of the battery core tab can be solved, and the consistency of the whole combined battery is improved and ensured.
In this embodiment, one side of the top of the spacer 5 is provided with an upward extending spacing protrusion 16, and because the positive and negative lugs of adjacent battery cells 1 need to be connected, the two adjacent battery cells are arranged in opposite directions, so that it can be ensured that the lugs in the same row are alternately arranged in a positive, negative, positive and negative manner. Similarly, two adjacent spacers 5 are also arranged in opposite directions, and the spacing bulges 16 on the spacers 5 after being arranged in parallel are arranged in a front-back alternative mode, so that the spacing bulges 16 can avoid the interference between every two lug connection points. In addition, in order to improve heat dispersion, be equipped with louvre 14 and unsmooth form ventilation channel 15 on electric core framework and the spacer respectively, can help electric core to dispel the heat like this, can also alleviate the weight of whole group battery simultaneously to the transport is convenient for.
The assembly process of the invention is as follows: at first put into electric core framework 2 with monomer electricity core 1, then with a plurality of electric core frameworks 2 and spacer 5 side by side arrange together, spacer 5 is located between two electric core frameworks 2, at this arrangement process, two adjacent electric core opposite direction sets up, just so can guarantee with one row's utmost point ear with positive, burden, positive, the form alternate arrangement of burden. Similarly, two adjacent spacers 5 are arranged in opposite directions, and the spacing protrusions 16 on the juxtaposed rear spacers are arranged in a front-rear alternating manner. After the arrangement is completed, the fixing separation blades 3 are placed on the side faces of the two ends of the outermost battery cell frame body 2 in a laminating mode, then the angle iron connecting strips 4 are installed at the four end corners of the battery cell frame body 2 and the fixing separation blades 3 respectively, the right-angle fixing portions of the angle iron connecting strips 4 are clamped on the four end corners of the battery cell frame body 2, and the fixing claws 7 at the two ends of the angle iron connecting strips 4 are fixedly connected with the fixing lugs 6 on the fixing separation blades 3 through screws.
The foregoing shows and describes the general principles, principal features and advantages of the invention. It should be understood by those skilled in the art that the above-mentioned embodiments do not limit the scope of the present invention in any way, and all technical solutions obtained by using equivalent substitution modes and the like fall within the scope of the present invention.
The parts not involved in the present invention are the same as or can be implemented using the prior art.
Claims (5)
1. A combined battery PACK box body comprises a plurality of single battery cores and a plurality of battery core frame bodies, wherein the single battery cores are mutually connected in series, each single battery core is arranged in the battery core frame body, and the battery core frame bodies are mutually assembled in parallel; one side surface of each battery cell frame body is of an opening structure, two lead-out grooves for leading out positive and negative electrode lugs of a single battery cell are arranged on one side of the top end of each battery cell frame body close to the opening direction, and a spacer is arranged between every two adjacent battery cell frame bodies; the battery cell comprises a battery cell frame body, a battery cell, a lead-out groove, fixing bosses, a lead-out groove and fixing bosses, wherein the fixing bosses extending outwards are arranged on two sides of the top end of the spacer, the fixing bosses of the spacer are embedded into the lead-out groove of the battery cell frame body after the spacer and the battery cell frame body are assembled in parallel, the protruding length of the fixing bosses and the recessed depth of the lead-out groove are consistent with the distance between the bottom of a lug of a single battery cell and the side surface of the single battery cell, when the single battery cell is installed, the lug of the single battery cell is clamped between the bottom end of the lead-out groove and the top end of the fixing bosses, and the bottom end of the lead-out groove and the top end of the fixing bosses are respectively abutted against the bottom of the lug of the single battery cell; one side at spacer top is equipped with the interval arch that upwards stretches out to two adjacent spacer opposite direction sets up, and the interval arch on the spacer is arranged with front and back alternative form side by side, the top of electric core framework is equipped with the mount table that is used for two monomer electric core positive and negative pole ears of fixed connection, the mount table is located lead-out groove one side to be equipped with the screw that is used for fixed positive and negative pole ear and connection piece on the mount table, be equipped with louvre and concavo-convex ventilation channel on the side of electric core framework and spacer, the louvre has been seted up on the fixed spacer.
2. The combined battery PACK box body according to claim 1, wherein the right-angle edges of the four end corners of the battery cell frame body are provided with mounting grooves, and the right-angle fixing parts of the angle iron connecting strips are embedded in the mounting grooves.
3. The combined battery PACK box body according to claim 1, wherein the four end corners of the fixing retaining sheet are provided with fixing lugs protruding outwards, the two ends of the angle iron connecting strip are provided with fixing claws which are mutually matched and connected with the fixing lugs, and the fixing lugs and the fixing claws are connected together through screws.
4. A combined battery PACK box according to claim 1 or 3, wherein, the fixed separation blade and the angle iron connecting strip are made of stainless steel materials, and the bottom of the fixed separation blade is provided with a supporting seat.
5. The combined battery PACK box body according to claim 1, wherein the positive electrode lug and the negative electrode lug of the adjacent monomer battery cells are sequentially connected in series and are directly contacted and connected, and the positive electrode lug and the negative electrode lug after contact and connection are fixed on the battery cell frame body through connecting sheets.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910932093.4A CN110518170B (en) | 2019-09-29 | 2019-09-29 | Modular battery PACK box |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201910932093.4A CN110518170B (en) | 2019-09-29 | 2019-09-29 | Modular battery PACK box |
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| CN110518170B true CN110518170B (en) | 2022-09-23 |
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| CN202585590U (en) * | 2012-04-13 | 2012-12-05 | 万向电动汽车有限公司 | Power module structure of electric car |
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| CN110518170A (en) | 2019-11-29 |
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