CN209822811U - Lithium battery module assembly structure suitable for square-packaged battery core - Google Patents
Lithium battery module assembly structure suitable for square-packaged battery core Download PDFInfo
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- CN209822811U CN209822811U CN201921022227.0U CN201921022227U CN209822811U CN 209822811 U CN209822811 U CN 209822811U CN 201921022227 U CN201921022227 U CN 201921022227U CN 209822811 U CN209822811 U CN 209822811U
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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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- 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
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P70/00—Climate change mitigation technologies in the production process for final industrial or consumer products
- Y02P70/50—Manufacturing or production processes characterised by the final manufactured product
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- Connection Of Batteries Or Terminals (AREA)
- Battery Mounting, Suspending (AREA)
Abstract
The utility model provides a lithium battery module assembly structure suitable for square-packaged cells, wherein the shell part of the lithium battery module mainly comprises a tray at the upper end, side plates at the left side and the right side and end plates at the front end and the rear end; the battery cell is clamped by the side plate and is limited and fixed by the battery cell accommodating groove of the side plate, the end plate is connected with the side plate and the tray through the folded edge, and two U-shaped notches are respectively formed at the joints of the lower folded edge, the upper folded edge and the tray and used for connecting and fixing the module with other components; there is the clearance between the adjacent electric core holding tank to make also there is the clearance between the adjacent electric core, and the curb plate body of the clearance department between the adjacent electric core holding tank respectively opens there is a ventilation hole. The utility model discloses a lithium battery module package assembly has solved current lithium battery module under the high rate discharge condition, the battery generates heat and the complicated problem of traditional module structural design; simple structure, ventilation heat dispersion is good, and the installation is dismantled.
Description
Technical Field
The utility model belongs to the technical field of the lithium cell, especially, relate to an assembly structure of lithium ion battery module suitable for square package electricity core.
Background
Lithium ion battery detects lithium cell, and lithium cell package (electric core) have multiple monomer forms such as square bag, soft package, cylinder at present, and the lithium cell module has then a plurality of electric cores to combine together through corresponding equipment via parallelly connected or series connection, and the heat dissipation under the high rate discharge condition need be considered in the design of the built-up member of lithium cell module and equipment mechanism to and lightweight and firmness scheduling problem.
SUMMERY OF THE UTILITY MODEL
In view of this, the utility model aims at providing a be applicable to square bag electricity core, and adopt series connection form's lithium cell module package assembly between the electricity core specifically is:
the lithium battery module assembly structure is suitable for square-packaged electric cores, and the shell part of the lithium battery module mainly comprises a tray, side plates on the left side and the right side and end plates at the front end and the rear end, wherein the tray is made of insulating materials at the upper end;
the battery core group in the module comprises an even number of battery cores which are connected in series, each battery core is provided with a rectangular battery core body, and the upper end face of each battery core body is provided with a positive electrode block and a negative electrode block of each battery core, which protrude out of the upper end face of each battery core body; the battery cores of the battery core group are sequentially arranged side by side, the negative electrode of the battery core at the first position is connected with one output copper bar, the positive electrode of the battery core at the last position is connected with the other output copper bar, the negative electrode of the battery core in the middle is adjacent to the positive electrode of the battery core at the last position, and the negative electrode of the battery core in the middle is electrically communicated with the positive electrode of the battery core at the last position through a polar connection copper bar used for connecting the electrodes across the battery;
each side plate is provided with a battery cell accommodating groove corresponding to the number and the position of the battery cells one by one, and two ends of each battery cell respectively extend into the battery cell accommodating grooves of the corresponding side plates; gaps exist between the adjacent battery cell accommodating tanks, so that gaps also exist between the adjacent battery cells, and a ventilation hole is formed in each side plate body at the gap between the adjacent battery cell accommodating tanks;
after the two side plates simultaneously clamp the battery cell, the plurality of pull rods respectively penetrate through the corresponding pull rod through holes on the two side plates and are matched with nuts for fixation.
Furthermore, the end plate is provided with a square body plate, and the edges of the periphery of the body plate are bent by 90 degrees to form an upper folded edge, a lower folded edge, a left folded edge and a right folded edge;
the left and right folded edges of the end plate are respectively attached to the side plates at the two sides and are fixedly connected;
the lower hem of the end plate is provided with two U-shaped notches for connecting and fixing the module with other components;
two tray fixing holes are formed in the upper folded edge of the end plate, and the upper folded edge supports and fixes the front end and the rear end of the tray.
Furthermore, the upper folded edge is bent at the edge of the upper folded edge.
Furthermore, a first notch is formed in the position, corresponding to the output copper bar, of the upper folded edge of the end plate, reinforcing ribs are further arranged on the surface of the body plate right below the first notch, each reinforcing rib comprises a horizontal insulating column fixing transverse rib and a vertical longitudinal rib, and an insulating column fixing hole is formed in each insulating column fixing transverse rib;
furthermore, a U-shaped notch which corresponds to the U-shaped notch of the lower folded edge in position and has the same shape with the U-shaped notch of the lower folded edge is also arranged near the first notch of the upper folded edge of the end plate, and a second notch is arranged at the position of the U-shaped notch of the upper folded edge, which corresponds to the other lower folded edge.
Furthermore, the front end and the rear end of the tray are provided with a notch matched with the first notch of the end plate and two U-shaped notches which correspond to the two U-shaped notches of the lower folded edge in position and have the same shape, and one of the U-shaped notches far away from the notch is positioned in the range of the second notch of the upper folded edge.
Further, the tray body is also provided with pole block exposure openings which correspond to the electrode pole block positions of each battery cell one by one, and the projection surface of each pole block exposure opening covers the projection surface of the motor pole block at the corresponding position; and welding and fixing the connecting part of the pole connection copper bar and the pole block and electrically communicating the connecting part and the pole block by laser welding.
Furthermore, two connecting portions of the polar connection copper bar are respectively provided with a circular hole, the size of the circular hole is the same as that of the polar identification circle body on the polar block, the circle center of the circular hole is respectively equal to the distance between the bottom edge and the outer side edge of the connecting portion where the circular hole is located, and the circle center of the polar identification circle body on the corresponding polar block is respectively equal to the projection distance between the corresponding short edge of the corresponding polar block exposure opening and the corresponding long edge of the corresponding side.
Furthermore, a plurality of pressure relief valve holes are formed in the tray, and each pressure relief valve hole is opposite to the opening of the pressure relief valve of one battery cell.
Furthermore, a wire harness cable tie fixing hole is formed in the position of a gap between every two corresponding electric cores on the tray.
The utility model discloses a lithium battery module package assembly has solved current lithium battery module under the high rate discharge condition, the battery generates heat and the complicated problem of traditional module structural design; simple structure, ventilation heat dispersion is good, and the installation is dismantled.
Drawings
The accompanying drawings, which form a part hereof, are included to provide a further understanding of the invention, and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description serve to explain the invention without undue limitation. In the drawings:
fig. 1 is an exploded view of each component part of a lithium battery module;
FIG. 2 is a perspective view of the lithium battery module after the components are combined;
FIG. 3 is a perspective view of a side panel;
FIG. 4 is a perspective view of an end plate;
fig. 5 is a schematic perspective view of the polar copper bar.
Detailed Description
It should be noted that, in the present invention, the embodiments and features of the embodiments may be combined with each other without conflict.
In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like, indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are used merely for convenience of description and for simplicity of description, and do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore, should not be construed as limiting the present invention.
The present invention will be described in detail below with reference to the accompanying drawings in conjunction with embodiments.
As shown in fig. 1 and 2, the outer shell part of the lithium battery module assembly structure mainly comprises a tray 5 at the upper end, side plates 2 at the left and right sides, and end plates 1 at the front and rear ends;
the applicable square-covered battery cell 9 has a rectangular battery cell body, and reference numeral 92 indicates the upper end surface of the battery cell body, and positive and negative electrode blocks 91 of the battery cell protruding out of the upper end surface of the battery cell body are fixedly arranged on the upper end surface;
as shown in fig. 1, the electric core group inside the lithium battery module includes an even number of electric cores 9, in this embodiment, ten electric cores are arranged in series, the electric cores are sequentially arranged side by side, the negative electrode of the first electric core (i.e., the electric core indicated by reference numeral 9 in fig. 1) is connected to one output copper bar 7, the positive electrode of the last (tenth) electric core is connected to another output copper bar 7, the negative electrode of the middle electric core is adjacent to the positive electrode of the previous electric core, and is electrically connected to the electrode through a pole connecting copper bar 8 for connecting the electrode across the electric core and the electrode, so as to form series connection;
the left side and the right side of the cell group are respectively provided with a side plate 2, as shown in fig. 1 to 3, each side plate 2 is formed with cell holding grooves 201 corresponding to the number and the positions of the cells one by one, two ends of each cell respectively extend into the cell holding grooves 201 of the corresponding side plate 2, the cell holding grooves 201 are used for limiting the cell in each degree of freedom on the plane where the cell opening is located, and as shown in fig. 3, 204, 207, 206, 202, 203 and the like, not only form corresponding grooves, but also form limiting parts of each groove to the cell; gaps exist between the adjacent battery cell accommodating grooves 201, so that gaps also exist between the adjacent battery cells, and a ventilation hole 16 is formed in each side plate body at the gap between the adjacent battery cell accommodating grooves 201, so that ventilation and heat dissipation of gaps between the adjacent battery cells can be realized through the ventilation holes 16 on the two sides, heat on the surfaces of the battery cells can be taken away, and the weight of the side plates 2 can be reduced, so that light weight is realized;
after the two side plates 2 simultaneously clamp the battery cell, the pull rods respectively pass through the pull rod through holes 40 on the two side plates 2 and are fixed in a matched manner through the pull rods 4 and the nuts 10, so that the degree of freedom of the battery cell 9 in the left and right directions is limited, and the assembly structure is simple in structure and convenient to mount and dismount;
the front end and the rear end of the side plate 2 are respectively provided with a mounting part 202, 203 for connecting the end plates at the front end and the rear end;
as shown in fig. 4, fig. 1 and fig. 2, the end plate 1 has a square body plate, and the peripheral edges of the body plate are bent by 90 degrees to form upper, lower, left and right folded edges (25, 25 ', 28');
the left and right folded edges (28, 28') of the end plate 1 are respectively attached to the mounting parts of the side plates at two sides and are tightly connected through bolts 3 and nuts 11;
the lower folded edge 25' of the end plate 1 is provided with two U-shaped notches 12 for connecting and fixing the module with other components; compared with a strip-shaped waist hole, the U-shaped groove opening is easy to process, the requirement on the width of the folded edge in the front and back directions is not large, the space occupied by the folded edge can be reduced, the overall space occupied by the module can be further reduced, and the problem of difficult installation caused by manufacturing tolerance is solved;
two tray fixing holes 26 are formed in an upper folding edge 25 of the end plate 1, and the upper folding edge 25 is used for supporting and fixing the front end and the rear end of the tray 5; preferably, in order to enhance the strength of the upper folding edge 25, the upper folding edge 25 is also bent with a folding edge 27 at the edge;
a first notch 281 'is formed in the position, corresponding to the output copper bar 7, of the upper folded edge 25 of the end plate 1, a reinforcing rib is further arranged on the surface of the body plate right below the first notch 281', the reinforcing rib comprises a horizontal insulating column fixing transverse rib 23 and a vertical longitudinal rib 24, and an insulating column fixing hole 22 is formed in the insulating column fixing transverse rib 23 and used for installing and fixing an insulating column 6; the first opening 281' leaves an avoidance space for connecting the output copper bar 7 with the insulating column;
a U-shaped notch 12 'which corresponds to the position of one U-shaped notch 12 of the lower folded edge and has the same shape is also arranged near the first notch 281' of the upper folded edge 25 of the end plate 1, a second notch 281 is arranged at the position of the U-shaped notch 12 of the other lower folded edge of the upper folded edge 25, and the U-shaped notch at the position is realized by the U-shaped notch arranged at the corresponding position of the tray 5;
the tray 5 is described next, which is made of an insulating material, such as epoxy resin plate, which is inexpensive, has good insulation properties, good workability, and characteristics suitable for the module, and has an overall size of the end plate and the side plate, and a neat structure;
as shown in fig. 1 and 2, the front end and the rear end of the tray 5 are provided with a notch matched with the first notch 281' of the end plate and two U-shaped notches which correspond to the two U-shaped notches of the lower folded edge in position and have the same shape, and one of the U-shaped notches far away from the notch is positioned in the range of the second notch 281 of the upper folded edge 25;
the tray body of the tray 5 is further provided with pole block exposure openings 51 (marked in fig. 1) corresponding to the positions of the electrode pole blocks 91 of each battery cell one by one, and the projection surface of each pole block exposure opening 51 covers the projection surface of the motor pole block 91 at the corresponding position, namely the upper surface of the pole block 91 can be completely exposed through the pole block exposure opening 51; the connecting part of the polar copper bar 8 and the pole block 91 are welded and fixed and electrically communicated through laser welding, in order to conveniently judge whether the connecting part is correctly aligned with the pole block 91, two connecting parts 81 of the polar copper bar 8 are respectively provided with a circular hole 810,
the size of the circular hole 810 is the same as that of the polar identification ring body on the polar block 91, and the distance between the center of the circular hole 810 and the bottom edge 20 and the distance between the center of the circular hole 810 and the outer side edge 21 of the connecting part are respectively the same as the projection distance between the center of the polar identification ring body on the corresponding polar block 91 and the corresponding short edge 510 and the corresponding long edge 511 of the corresponding polar block exposure opening 51, so that when the bottom edge 20 of the connecting part abuts against the corresponding short edge 510 of the polar block exposure opening 51 and the outer side edge 21 of the connecting part abuts against the corresponding long edge 511 of the polar block exposure opening 51, the circular hole 810 of the connecting part is just right opposite to the polar identification ring body on the polar block 91, namely the polar identification ring body on the polar block 91 can be seen through the circular hole 810, namely the connecting part and the polar block 91 are judged;
in addition, the tray 5 is also provided with a plurality of pressure relief valve holes 18, and each pressure relief valve hole 18 is over against the pressure relief valve opening 93 of one battery cell so as to facilitate the pressure relief of the battery cell;
preferably, a wire harness binding belt fixing hole 17 is further formed in the tray 5 at the gap between each corresponding electric core and used for installing a binding belt, and the binding belt is used for fixing a temperature and voltage acquisition wire harness on the polar copper bar 8;
the output copper bar 7 is fixed with the insulating column 6 through bolts, so that the problem of fixing the output copper bar and the problem of connecting the copper bars between modules are solved.
The above description is only a preferred embodiment of the present invention, and should not be taken as limiting the invention, and any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (10)
1. The lithium battery module assembly structure is suitable for square-packaged electric cores, and the shell part of the lithium battery module mainly comprises a tray, side plates on the left side and the right side and end plates at the front end and the rear end, wherein the tray is made of insulating materials at the upper end; the method is characterized in that:
the battery core group in the module comprises an even number of battery cores which are connected in series, each battery core is provided with a rectangular battery core body, and the upper end face of each battery core body is provided with a positive electrode block and a negative electrode block of each battery core, which protrude out of the upper end face of each battery core body; the battery cores of the battery core group are sequentially arranged side by side, the negative electrode of the battery core at the first position is connected with one output copper bar, the positive electrode of the battery core at the last position is connected with the other output copper bar, the negative electrode of the battery core in the middle is adjacent to the positive electrode of the battery core at the last position, and the negative electrode of the battery core in the middle is electrically communicated with the positive electrode of the battery core at the last position through a polar connection copper bar used for connecting the electrodes across the battery;
each side plate is provided with a battery cell accommodating groove corresponding to the number and the position of the battery cells one by one, and two ends of each battery cell respectively extend into the battery cell accommodating grooves of the corresponding side plates; gaps exist between the adjacent battery cell accommodating tanks, so that gaps also exist between the adjacent battery cells, and a ventilation hole is formed in each side plate body at the gap between the adjacent battery cell accommodating tanks;
after the two side plates simultaneously clamp the battery cell, the plurality of pull rods respectively penetrate through the corresponding pull rod through holes on the two side plates and are matched with nuts for fixation.
2. The lithium battery module assembly structure suitable for square-packaged electric core of claim 1, characterized in that: the end plate is provided with a square body plate, and the edges of the periphery of the body plate are bent by 90 degrees to form an upper folded edge, a lower folded edge, a left folded edge and a right folded edge;
the left and right folded edges of the end plate are respectively attached to the side plates at the two sides and are fixedly connected;
the lower hem of the end plate is provided with two U-shaped notches for connecting and fixing the module with other components;
two tray fixing holes are formed in the upper folded edge of the end plate, and the upper folded edge supports and fixes the front end and the rear end of the tray.
3. The lithium battery module assembly structure suitable for square-packaged electric core of claim 2, characterized in that: the upper folded edge is bent at the edge thereof with a folded edge.
4. The lithium battery module assembly structure suitable for square-packaged electric core of claim 1, characterized in that: the position department that the last hem of end plate corresponds the output copper bar opens there is first opening, and the body board face under first opening still is equipped with the strengthening rib, and the strengthening rib includes the fixed horizontal muscle of horizontally insulated column and the muscle of indulging of erectting, and it has the insulated column fixed orifices to open on the fixed horizontal muscle of insulated column.
5. The lithium battery module assembly structure suitable for square-packaged electric core of claim 4, characterized in that: the upper folding edge of the end plate is also provided with a U-shaped notch which corresponds to the U-shaped notch of the lower folding edge in position and has the same shape near the first notch, and the upper folding edge is provided with a second notch at the position corresponding to the U-shaped notch of the other lower folding edge.
6. The lithium battery module assembly structure suitable for square-packaged electric core of claim 5, characterized in that: the front end and the rear end of the tray are provided with a notch matched with the first notch of the end plate and two U-shaped notches which correspond to the two U-shaped notches of the lower folded edge in position and have the same shape, and one of the U-shaped notches far away from the notch is positioned in the range of the second notch of the upper folded edge.
7. The lithium battery module assembly structure suitable for square-packaged electric core of claim 1, characterized in that: the tray body is also provided with pole block exposure openings which correspond to the electrode pole block positions of each battery cell one by one, and the projection surface of each pole block exposure opening covers the projection surface of the motor pole block at the corresponding position; and welding and fixing the connecting part of the pole connection copper bar and the pole block and electrically communicating the connecting part and the pole block by laser welding.
8. The lithium battery module assembly structure suitable for square-packed battery cores of claim 7, characterized in that: two connecting portions of utmost point antithetical couplet copper bar are respectively opened and are had a circular port, and the circular port size is the same with the polarity sign circle body on the utmost point piece, and the centre of a circle of circular port respectively with the distance at the bottom border and the outside border of place connecting portion, respectively with the polarity sign circle body centre of a circle on the corresponding utmost point piece expose the mouthful corresponding minor face and correspond the projection distance on the long limit of side the same with the utmost point piece that corresponds respectively.
9. The lithium battery module assembly structure suitable for square-packaged electric core of claim 1, characterized in that: a plurality of pressure relief valve holes are formed in the tray, and each pressure relief valve hole is opposite to the opening of one cell.
10. The lithium battery module assembly structure suitable for square-packaged electric core of claim 1, characterized in that: and a wire harness binding tape fixing hole is formed in the position of a gap between each corresponding electric core on the tray.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921022227.0U CN209822811U (en) | 2019-07-03 | 2019-07-03 | Lithium battery module assembly structure suitable for square-packaged battery core |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921022227.0U CN209822811U (en) | 2019-07-03 | 2019-07-03 | Lithium battery module assembly structure suitable for square-packaged battery core |
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| Publication Number | Publication Date |
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| CN209822811U true CN209822811U (en) | 2019-12-20 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201921022227.0U Active CN209822811U (en) | 2019-07-03 | 2019-07-03 | Lithium battery module assembly structure suitable for square-packaged battery core |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112072043A (en) * | 2020-10-10 | 2020-12-11 | 湖北亿纬动力有限公司 | Battery pack |
| CN114243150A (en) * | 2021-11-05 | 2022-03-25 | 佛山市实达科技有限公司 | Lithium ion storage battery pack |
| CN114792833A (en) * | 2022-03-25 | 2022-07-26 | 东风汽车集团股份有限公司 | High-voltage assembly, fuel cell module and vehicle |
-
2019
- 2019-07-03 CN CN201921022227.0U patent/CN209822811U/en active Active
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112072043A (en) * | 2020-10-10 | 2020-12-11 | 湖北亿纬动力有限公司 | Battery pack |
| CN114243150A (en) * | 2021-11-05 | 2022-03-25 | 佛山市实达科技有限公司 | Lithium ion storage battery pack |
| CN114243150B (en) * | 2021-11-05 | 2024-04-26 | 佛山市实达科技有限公司 | Lithium ion storage battery pack |
| CN114792833A (en) * | 2022-03-25 | 2022-07-26 | 东风汽车集团股份有限公司 | High-voltage assembly, fuel cell module and vehicle |
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Address after: 100096 Xisanqi Building Materials City, Haidian District, Beijing Patentee after: Beijing Wuzhou Yuxin Technology Co., Ltd Address before: 100096 Xisanqi Building Materials City, Haidian District, Beijing Patentee before: BEIJING GUONENG YUXIN TECHNOLOGY Co.,Ltd. |