CN210156466U - Group structure of lithium battery module - Google Patents
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- CN210156466U CN210156466U CN201921500268.6U CN201921500268U CN210156466U CN 210156466 U CN210156466 U CN 210156466U CN 201921500268 U CN201921500268 U CN 201921500268U CN 210156466 U CN210156466 U CN 210156466U
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02E60/10—Energy storage using batteries
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Abstract
The utility model discloses a battery module's unitized construction, a serial communication port, include: the battery cell assembling device comprises a plurality of battery cell assembling units, an upper fixing plate, a lower fixing plate and a plurality of fasteners, wherein the battery cell assembling units are sequentially stacked in the vertical direction and are clamped between the upper fixing plate and the lower fixing plate; the upper fixing plate and the lower fixing plate are connected through a plurality of fasteners; adjacent through setting element interconnect between the electric core assembly unit, the setting element is used for the restriction electric core assembly unit's horizontal displacement. The application range is wide, the height of the module can be adjusted according to the height size of the battery pack, the internal space of the battery pack is fully utilized, and the energy density of a system is improved; the battery cell is small in number of types of grouped structural parts, low in potential risk points, high in weight percentage of the battery cell in the module, simple in machining and assembling process, high in product percent of pass and low in machining cost.
Description
Technical Field
The utility model relates to a lithium cell technical field, more specifically relates to a battery pack structure of lithium cell module.
Background
Along with the becoming mature of lithium battery technology, the lithium cell has widely been applied to electric automobile, consequently also more and more severer to the requirement of lithium cell package, and the lithium cell module is as the important component part of lithium cell package, and its effect is more or less non-trivial and varies. Because the power requirements of all vehicle types of the electric vehicle are different, the serial and parallel connection number of the lithium battery modules in the lithium battery pack of each vehicle type is different. At present, most of the grouping modes of the lithium battery modules are fixed in groups by vertically arranging and arranging the battery cells, and when the height of the box body is smaller than the vertical arranging height of the battery cells, the grouping mode cannot meet the arrangement requirement; when the height of the box body is larger than the vertical placing height of the battery cell, the space above the vertical placing height of the battery cell is wasted, and the improvement of the energy density of the system is influenced. Therefore, the battery cell is single in module form and limited. In addition, the lithium battery module has the advantages of multiple parts, complex assembly process and high manufacturing cost.
Therefore, it is necessary to provide a grouping structure of a lithium battery module that can improve energy density, has a simple structure, and has high grouping efficiency.
SUMMERY OF THE UTILITY MODEL
The utility model aims at providing a group's structure of lithium cell module realizes improving energy density, simple structure and in groups efficient.
In order to achieve the above object, the utility model provides a battery pack structure of lithium battery module, include: the battery cell assembling device comprises a plurality of battery cell assembling units, an upper fixing plate, a lower fixing plate and a plurality of fasteners, wherein the battery cell assembling units are sequentially stacked in the vertical direction and are clamped between the upper fixing plate and the lower fixing plate; each battery cell assembly unit at least comprises at least one battery cell; the upper fixing plate and the lower fixing plate are connected through the plurality of fasteners; adjacent through setting element interconnect between the electric core assembly unit, just the setting element is used for the restriction electric core assembly unit's horizontal displacement.
Optionally, the cell assembling unit includes a cell fixing frame, a first heat conducting fixing plate, a second heat conducting fixing plate and two cells, a first groove and a second groove for accommodating the cells are respectively disposed on two sides of the cell fixing frame, the first heat conducting fixing plate is connected with the cell fixing frame to fix one of the cells in the first groove, and the second heat conducting fixing plate is connected with the cell fixing frame to fix the other cell in the second groove.
Optionally, the outside of the side wall of the cell fixing frame is provided with a plurality of buckles.
Optionally, the side wall of the first heat conducting fixing plate is provided with a plurality of first fastening holes matched with one part of the plurality of fasteners, and the side wall of the second heat conducting fixing plate is provided with a plurality of second fastening holes matched with another part of the plurality of fastening holes.
Optionally, the positioning element includes a plurality of positioning columns and a plurality of positioning holes, the positioning columns and the positioning holes are respectively disposed at edge regions of opposite surfaces of the cell fixing frame, and an axis of the positioning hole coincides with an axis of the positioning column.
Optionally, a plurality of first through holes are formed in the first heat-conducting fixing plate, and each first through hole is matched with one positioning column; the second heat-conducting fixing plate is provided with a plurality of second through holes, and each second through hole corresponds to one positioning hole.
Optionally, the height of the positioning column is greater than the sum of the thicknesses of the first heat conduction fixing plate and the second heat conduction fixing plate.
Optionally, the fastener includes the body of rod, the both ends of the body of rod are equipped with first external screw thread and second external screw thread respectively, the centre of the body of rod is equipped with and is used for making the rotatory portion of screwing on of the body of rod, first external screw thread with the direction of rotation of second external screw thread is opposite.
Optionally, the edge of the lower surface of the upper fixing plate is provided with a plurality of first screw holes, and the rotation directions of the internal threads of the first screw holes and the first external threads are the same; the edge of the upper surface of the lower fixing plate is provided with a plurality of second screw holes, and the inner threads of the second screw holes are identical to the second outer threads in rotation direction.
Optionally, the upper fixing plate is provided with a plurality of third through holes matched with the positioning columns, and the lower fixing plate is provided with a plurality of fourth through holes connected with external equipment.
The beneficial effects of the utility model reside in that:
the multiple battery cell assembly units are assembled in a stacking mode, the stacking number of the battery cell assembly units can be adjusted according to the height of the lithium battery pack, and then the height of the lithium battery module can be adjusted, so that the internal space of the battery pack is fully utilized, and the energy density of a system is improved; through an upper fixed plate, a lower fixed plate and a plurality of fasteners from upper and lower both ends to a plurality of electric core assembly units of range upon range of press from both sides tightly fixed, and adjacent set up the horizontal displacement that setting element restriction electric core assembly unit between the electric core assembly unit, at last in groups, simple structure, accessory part except the electric core is less, and the percentage in groups (electric core account for the weight percentage of module) is high, effectively reduces the latent risk of battery module simultaneously, and processing, assembly process are simple, effectively improve the product percent of pass, reduce the processing cost.
The apparatus of the present invention has other features and advantages which will be apparent from or are set forth in more detail in the accompanying drawings and the following detailed description, which are incorporated herein, and which together serve to explain certain principles of the invention.
Drawings
The above and other objects, features and advantages of the present invention will become more apparent by describing in more detail exemplary embodiments of the present invention with reference to the attached drawings, in which like reference numerals generally represent like parts.
Fig. 1 shows a front view of a battery pack structure of a lithium battery module according to an embodiment of the present invention.
Fig. 2 shows an exploded view of a battery pack structure of a lithium battery module according to an embodiment of the present invention.
Fig. 3 shows a front view of a cell assembly unit according to an embodiment of the present invention.
Fig. 4 shows an exploded view of a cell assembly unit according to an embodiment of the present invention.
Fig. 5 shows a top view of an upper mounting plate according to an embodiment of the present invention.
Fig. 6 shows a top view of a lower fixation plate according to an embodiment of the present invention.
Fig. 7 shows a front view of a fastener according to an embodiment of the invention.
Fig. 8 shows a cross-sectional view of the clinch portion of a fastener according to an embodiment of the invention, taken along the direction a-a' in fig. 7.
Description of reference numerals:
1. an upper fixing plate; 2. a battery cell assembling unit; 3. a fastener; 4. a lower fixing plate; 110. a third through hole; 120. a first screw hole; 210. a first heat-conducting fixing plate; 211. a first through hole; 212. a first snap hole; 220. an electric core; 230. fixing a frame by the battery core; 231. a positioning column; 232. buckling; 240. a second heat-conducting fixing plate; 241. a second through hole; 242. a second snap-fit hole; 310. a first external thread; 320. a tightening section; 330. a second external thread; 410. a fourth via hole; 420. and a second screw hole.
Detailed Description
The invention will be described in more detail below with reference to the accompanying drawings. While the preferred embodiments of the present invention have been illustrated in the accompanying drawings, it is to be understood that the invention may be embodied in various forms and should not be limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the scope of the invention to those skilled in the art.
In the present invention, the terms of orientation such as "upper", "lower", "left", "right", "center", "vertical", "horizontal", "center", etc. are used in conjunction with the direction and positional relationship shown in the product based on the drawings, and are not intended to indicate or imply that the product referred to must have a specific orientation for the convenience of description and simplification, and should not be construed as limiting the present invention.
Fig. 1 shows a front view of a battery pack structure of a lithium battery module according to an embodiment of the present invention, and fig. 2 shows an exploded view of the battery pack structure of the lithium battery module according to an embodiment of the present invention;
as shown in fig. 1 and fig. 2, the grouping structure of lithium battery modules according to the present invention includes: the battery cell assembling device comprises a plurality of battery cell assembling units 2, an upper fixing plate 1, a lower fixing plate 4 and a plurality of fasteners 3, wherein the battery cell assembling units 2 are sequentially stacked in the vertical direction and are clamped between the upper fixing plate 1 and the lower fixing plate 4; the battery cell assembly unit 2 comprises at least one battery cell 220; the upper fixing plate 1 and the lower fixing plate 4 are connected through the plurality of fasteners 3; it is adjacent through setting element interconnect between the electric core assembly unit 2, just the setting element is used for the restriction electric core assembly unit 2's horizontal displacement.
Specifically, a plurality of identical battery cell assembly units 2 are assembled in a vertical stacking and stacking mode, the number of the battery cell assembly units 2 stacked can be adjusted according to the height of the lithium battery pack, and then the height of the lithium battery module can be adjusted, so that the internal space of the battery pack is fully utilized, and the energy density of a system is improved; through upper fixed plate 1, bottom plate 4 and a plurality of fasteners 3 from upper and lower both ends to range upon range of a plurality of electric core assembly unit 2 press from both sides tightly fixedly, and adjacent set up the horizontal displacement that setting element restriction electric core assembly unit 2 between electric core assembly unit 2, at last in groups, simple structure, the accessory part except electric core 220 is less, the percentage of group (electric core 220 account for the weight percentage of module) is high, effectively reduce the latent risk of battery module simultaneously, processing, assembly process are simple, effectively improve the product percent of pass, reduce the processing cost. In this embodiment, as shown in fig. 1 and fig. 2, according to the height of the battery pack, a 50Ah battery cell 220 is used, the battery cell is connected in a manner that two modules are connected in parallel and eight modules are arranged in series in the height direction, except that enough safety height is reserved, the sizes of the rest parts can be fully utilized, the battery pack formed by the modules is used, the system energy density is 162Wh/kg, the energy density is increased by 8% compared with the existing arrangement manner that the battery cells are vertically arranged, the grouping rate of the modules (the percentage of the battery cells 220 in the weight of the modules) can reach 85%, and the grouping rate of the modules is also higher than the arrangement manner that the battery cells are vertically arranged.
In this embodiment, the battery cell assembling unit 2 includes a battery cell fixing frame 230, a first heat conducting fixing plate 210, a second heat conducting fixing plate 240 and two battery cells 220, a first groove and a second groove for accommodating the battery cells 220 are respectively formed on the upper side and the lower side of the battery cell fixing frame 230, the first heat conducting fixing plate 210 is connected to the battery cell fixing frame 230 to fix one of the battery cells 220 in the first groove, and the second heat conducting fixing plate 240 is connected to the battery cell fixing frame 230 to fix the other of the battery cells 220 in the second groove.
Specifically, as shown in fig. 3 and 4, the cell fixing frame 230, the first heat conduction fixing plate 210, and the second heat conduction fixing plate 240 in this embodiment are rectangular plates matched with the cell 220, the upper and lower sides of the cell fixing frame 230 are respectively provided with a first groove and a second groove for placing the cell 220, the dimensions of the two grooves are matched with the dimensions of the cell 220 so that the cell 220 is disposed in the grooves and cannot move laterally, the upper and lower sides of the cell fixing frame 230 are respectively clamped and fixed to the cell 220 in the two grooves by the first heat conduction fixing plate 210 and the second heat conduction fixing plate 240, thereby forming the cell assembling unit 2, the structure of the cell assembling unit 2 is simple, and each cell assembling unit 2 can be provided with two cells 220, which is beneficial to improving the energy density. Meanwhile, the first heat conduction fixing plate 210 and the second heat conduction fixing plate 240 can be in surface contact with the battery cell 220, and heat in the battery cell 220 can be conducted to the outside of the battery cell assembly unit 2, which is beneficial to heat dissipation of the battery cell 220 during operation. In this embodiment, 1060 aluminum plates can be selected for use to the heat conduction fixed plate, and this kind of material heat dissipation is good, with the laminating of electricity core 220, can with the heat transfer to the side that produces in the electric core 220 working process, and radiating modes such as rethread forced air cooling, liquid cooling take away the heat to guarantee that electricity core 220 works in reasonable operating temperature within range. Referring to fig. 4 to 6, in order to increase the structural strength of the battery pack, the electrical core fixing frame 230, the first heat-conducting fixing plate 210 and the second heat-conducting fixing plate 240 in this embodiment all adopt metal materials, and meanwhile, the middle of the first heat-conducting fixing plate 210 and the second heat-conducting fixing plate 240 is provided with a rectangular notch, so as to achieve the purpose of reducing weight.
In one example, a plurality of buckles 232 are disposed on the outside of the sidewall of the cell fixing frame 230.
Specifically, referring to fig. 4, in this embodiment, two rows of upper and lower buckles are disposed on outer sides of two relatively longer side walls of the rectangular plate-shaped battery cell fixing frame 230, each row of buckles includes three buckles 232, and the three buckles 232 are respectively disposed at two ends and in the middle of the side wall.
In one example, the sidewall of the first heat conducting and fixing plate 210 is provided with a first fastening hole 212 for fastening a part of the plurality of fasteners 232, and the sidewall of the second heat conducting and fixing plate 240 is provided with a plurality of second fastening holes 242 for fastening another part of the plurality of fasteners 232.
Specifically, referring to fig. 4, in this embodiment, the first heat conducting fixing plate 210 and the second heat conducting fixing plate 240 have the same structure, and both include a horizontal bottom wall and two vertical side walls (folded edges) perpendicular to the horizontal bottom wall, where the horizontal bottom wall can be in surface contact with the battery cell 220, the vertical side walls are provided with fastening holes 212 engaged with the fasteners 232, the vertical side wall of the first heat conducting fixing plate 210 faces downward, when assembling, three fastening holes 212 on the vertical side wall of the first heat conducting fixing plate 210 are engaged with three fastening holes 212 on the battery cell fixing frame 230 to achieve fixed connection, the corresponding first vertical side wall of the heat conducting fixing plate faces upward, and when assembling, three fastening holes 212 on the vertical side wall of the second heat conducting fixing plate 240 are engaged with three fastening holes 212 on the battery cell fixing frame 230 to achieve fixed connection. The utility model discloses an in other embodiments, also can set up buckle 232 on first heat conduction fixed plate 210 and second heat conduction fixed plate 240, corresponding buckle hole 212 that sets up the correspondence in the fixed frame 230 lateral wall of electric core outside, also can realize being connected of heat conduction fixed plate and the fixed frame 230 of electric core through other modes, realize easily that this here is no longer repeated for the heat fixed plate and the fixed frame 230 of electric core is connected technical personnel in the field.
In one example, the positioning element includes a plurality of positioning posts 231 and a plurality of positioning holes, the positioning posts 231 and the positioning holes are respectively disposed at edge regions of opposite surfaces of the cell fixing frame 230, and an axis of the positioning holes coincides with an axis of the positioning posts 231. Specifically, referring to fig. 3 and 4, positioning posts 231 are prepared at four corners of the upper surface of the cell fixing frame 230 of the cell 220, and correspondingly, positioning holes (not shown) are provided at positions corresponding to the positioning posts 231 on the lower surface of the cell assembling unit 2, and the positioning holes are coaxial with the positioning posts 231. When a plurality of the cell assembling units 2 are stacked one on top of another, the adjacent cell assembling units 2 can be connected with each other through the positioning posts 231 and the positioning holes, and horizontal displacement can be mutually restricted.
In this embodiment, the first heat-conducting fixing plate 210 is provided with a plurality of first through holes 211, and each first through hole 211 is matched with one positioning column 231; the second heat-conducting fixing plate 240 is provided with a plurality of second through holes 241, and each second through hole 241 corresponds to one positioning hole; the height of the positioning post 231 is greater than the sum of the thicknesses of the first heat-conducting fixing plate 210 and the second heat-conducting fixing plate 240.
Specifically, referring to fig. 2 and 4, after the first heat conduction fixing plate 210 or the second heat conduction fixing plate 240 is connected to the cell fixing frame 230 of the battery cell 220, the positioning posts 231231 can pass through the first through holes 211 of the first thermal fixing plate 210, while the second through holes 241 of the second thermal fixing plate 240 correspond to the positioning holes, and the height of the positioning column 231 is greater than the sum of the thicknesses of the first heat-conducting fixing plate 210 and the second heat-conducting fixing plate 240, when two cell assembling units 2 are connected, the positioning post 231 on the lower cell assembling unit 2 can simultaneously pass through the first through hole 211 of the first heat conducting fixing plate 210 and the second through hole 241 of the second heat conducting fixing plate 240 and finally be inserted into the positioning hole at the bottom of the upper cell assembling unit 2, therefore, the connection between the two battery cell assembling units 2 is realized, and by analogy in this way, the horizontal limiting after the plurality of battery cell assembling units 2 are stacked is realized.
In one example, the fastening member 3 includes a rod body, the two ends of the rod body are respectively provided with a first external thread 310 and a second external thread 330, the middle of the rod body is provided with a tightening portion 320 for rotating the rod body, and the first external thread 310 and the second external thread 330 are opposite in rotation direction.
Specifically, referring to fig. 7 and 8, the fastening member 3 in this embodiment is a connecting rod, the upper end and the lower end of the connecting rod are respectively provided with a left-handed external thread and a right-handed external thread, the middle of the connecting rod is provided with a tightening portion 320, and the horizontal cross section of the tightening portion 320 is a regular hexagon. It should be noted that the cross-sectional shape of the tightening portion 320 along the a-a' direction is not limited to a regular hexagon, and in other embodiments of the present invention, the cross-section of the tightening portion 320 may be a rectangle, a triangle, or the like. It should be noted that, fasteners 3 with different length sizes may be correspondingly designed according to the number of battery cell assembling units 2 to be grouped, that is, the height of the battery pack, and the fasteners 3 with different lengths are selected according to the height of the battery pack when the batteries are grouped to realize the connection between the upper fixing plate 1 and the lower fixing plate 4.
In one example, the edge of the lower surface of the upper fixing plate 1 is provided with a plurality of first screw holes 120, and the internal threads of the first screw holes are rotated in the same direction as the first external threads 310; a plurality of second screw holes 420 are formed at an edge of an upper surface of the lower fixing plate 4, and an internal thread of the second screw holes 420 has the same rotation direction as the second external thread 330.
Specifically, referring to fig. 5 and 6, corresponding to the left-handed external thread and the right-handed external thread at the upper end and the lower end of the fastening piece 3, in this embodiment, the four corners of the lower surface of the upper fixing plate 1 are respectively provided with the first screw holes 120 (hollow column built-in screw holes) having left-handed internal threads, the four corners of the upper surface of the lower fixing plate 4 are provided with the second screw holes 420 having right-handed internal threads, when connecting, the left-handed external thread at the upper end of the fastening piece 3 is connected with the left-handed internal thread of the first screw hole 120 of the upper fixing plate 1, and meanwhile, the right-handed external thread at the lower end of the fastening piece 3 is connected with the right-handed internal thread of the second screw hole 420 of the lower fixing plate 4, when the upper fixing plate 1 and the lower fixing plate 4 are installed, the fastening. The utility model discloses an in other embodiments, also can set up dextrorotation external screw thread and levogyration external screw thread respectively with the upper and lower both ends of fastener 3, the screw that corresponds at the locking post of fixed plate 1 and bottom plate 4 sets up dextrorotation internal thread and levogyration internal thread.
In this embodiment, the upper fixing plate 1 is provided with a plurality of third through holes 110 matching with the positioning pillars 231, and the lower fixing plate 4 is provided with a plurality of fourth through holes 410 connected with an external device.
Specifically, referring to fig. 5 and 6, the four corners of the upper fixing plate 1 are respectively provided with third through holes 110, and the third through holes 110 can accommodate the positioning posts 231 at the four corners of the cell fixing frame 230 of the cell assembling unit 2 to pass through, so that the horizontal displacement of the cell assembling unit 2 at the top is limited when the fastening piece 3 is fastened, and further, the horizontal displacement of the whole lithium battery pack is limited, so that the stacked battery pack is tightly connected with the upper fixing plate 1 and the lower fixing plate 4 into a whole; the four corners of the lower fixing plate 4 are respectively provided with a fourth through hole 410 for fixedly connecting the grouped lithium battery modules in the battery pack, and the fourth through holes 410 in the embodiment are long-strip-shaped or oval-shaped, so that the battery modules can be conveniently installed and adjusted.
The lithium battery grouping structure of the embodiment has a wide application range, and the height of the module can be adjusted according to the height of the battery pack, so that the internal space of the battery pack is fully utilized, and the energy density of a system is improved; the grouped structure parts are few in types, potential risk points are few, the module-level grouping rate (the weight percentage of the battery cell 220 in the module) is higher, the processing and assembling processes are simpler, the product percent of pass can be improved, and the processing cost is reduced.
While various embodiments of the present invention have been described above, the above description is intended to be illustrative, not exhaustive, and not limited to the disclosed embodiments. Many modifications and variations will be apparent to those of ordinary skill in the art without departing from the scope and spirit of the described embodiments.
Claims (10)
1. The utility model provides a battery module's unitized construction which characterized in that includes: the battery cell assembling device comprises a plurality of battery cell assembling units, an upper fixing plate, a lower fixing plate and a plurality of fasteners, wherein the battery cell assembling units are sequentially stacked in the vertical direction and are clamped between the upper fixing plate and the lower fixing plate;
each battery cell assembly unit comprises at least one battery cell;
the upper fixing plate and the lower fixing plate are connected through the plurality of fasteners;
adjacent through setting element interconnect between the electric core assembly unit, just the setting element is used for the restriction electric core assembly unit's horizontal displacement.
2. The set structure of lithium battery modules of claim 1, wherein the cell assembling unit includes a cell fixing frame, a first heat conducting fixing plate, a second heat conducting fixing plate, and two cells, two sides of the cell fixing frame are respectively provided with a first groove and a second groove for accommodating the cells, the first heat conducting fixing plate is connected with the cell fixing frame to fix one of the cells in the first groove, and the second heat conducting fixing plate is connected with the cell fixing frame to fix the other of the cells in the second groove.
3. The battery pack structure of claim 2, wherein a plurality of fasteners are disposed on the exterior of the side wall of the cell fixing frame.
4. The battery pack structure of claim 3, wherein the side wall of the first thermally conductive fixing plate is provided with a plurality of first fastening holes for fastening a part of the plurality of fasteners, and the side wall of the second thermally conductive fixing plate is provided with a plurality of second fastening holes for fastening another part of the plurality of fasteners.
5. The battery pack assembly of claim 2, wherein the positioning member includes a plurality of positioning posts and a plurality of positioning holes, the positioning posts and the positioning holes are respectively disposed at edge regions of opposite surfaces of the cell fixing frame, and axes of the positioning holes coincide with axes of the positioning posts.
6. The battery pack structure of claim 5, wherein the first thermally conductive fixing plate has a plurality of first through holes, and each of the first through holes is engaged with one of the positioning posts; the second heat conducting fixing plate is provided with a plurality of second through holes, and each second through hole corresponds to one positioning hole.
7. The battery pack structure of claim 6, wherein the height of the positioning posts is greater than the sum of the thicknesses of the first thermally conductive fixing plate and the second thermally conductive fixing plate.
8. The battery pack structure of claim 1, wherein the fastening member includes a rod body, the rod body has first and second external threads at opposite ends thereof, and a tightening portion is disposed in the middle of the rod body for rotating the rod body, and the first and second external threads have opposite rotation directions.
9. The battery pack structure of claim 8, wherein the edge of the lower surface of the upper fixing plate is provided with a plurality of first screw holes, and the internal threads of the first screw holes are rotated in the same direction as the first external threads;
the edge of the upper surface of the lower fixing plate is provided with a plurality of second screw holes, and the inner threads of the second screw holes are identical to the second outer threads in rotation direction.
10. The battery pack assembly as claimed in claim 5, wherein the upper fixing plate is provided with a plurality of third through holes engaged with the positioning posts, and the lower fixing plate is provided with a plurality of fourth through holes connected with an external device.
Priority Applications (1)
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|---|---|---|---|
| CN201921500268.6U CN210156466U (en) | 2019-09-10 | 2019-09-10 | Group structure of lithium battery module |
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| CN201921500268.6U CN210156466U (en) | 2019-09-10 | 2019-09-10 | Group structure of lithium battery module |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117175073A (en) * | 2023-11-02 | 2023-12-05 | 博鼎精工智能科技(山东)有限公司 | Electric power energy storage equipment based on thermal management |
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2019
- 2019-09-10 CN CN201921500268.6U patent/CN210156466U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117175073A (en) * | 2023-11-02 | 2023-12-05 | 博鼎精工智能科技(山东)有限公司 | Electric power energy storage equipment based on thermal management |
| CN117175073B (en) * | 2023-11-02 | 2024-01-16 | 博鼎精工智能科技(山东)有限公司 | Electric power energy storage equipment based on thermal management |
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