CN116093514A

CN116093514A - Lithium battery pack protection and adjustment device

Info

Publication number: CN116093514A
Application number: CN202310338849.9A
Authority: CN
Inventors: 曹国鑫; 高雪
Original assignee: Wuhai Junze Technology Co ltd
Current assignee: Wuhai Junze Technology Co ltd
Priority date: 2023-03-31
Filing date: 2023-03-31
Publication date: 2023-05-09
Anticipated expiration: 2043-03-31
Also published as: CN116093514B

Abstract

The invention provides a lithium battery pack protection and adjustment device, and belongs to the technical field of battery mounting frames; including the battery package that is used for spacing and protection group battery, the battery package is including the first end connecting part and the second end connecting part that are used for spacing and protection group battery tip electric core, first end connecting part with one side that the second end connecting part is close to each other is provided with a plurality of intermediate junction parts that are connected. According to the invention, the middle connecting part, the first end connecting part, the second end connecting part and the temperature protecting part are arranged, when the first pole box, the second pole box or any middle box of the formed battery pack is damaged, the first pole box, the second pole box or any middle box of the formed battery pack can be detached and replaced, so that the use safety of the lithium battery pack is ensured, the use and maintenance cost of the lithium battery pack is reduced, and meanwhile, the number of the middle connecting parts can be increased or reduced according to the requirement by using the mode, so that the number of battery cores in the battery pack is regulated, and the refitting difficulty of the lithium battery pack of a vehicle is further reduced.

Description

Lithium battery pack protection and adjustment device

Technical Field

The invention relates to the technical field of battery mounting frames, in particular to a protection and adjustment device for a lithium battery pack.

Background

A lithium battery pack refers to one or more lithium battery cells with a battery protection plate, and has an output with a specific function. The lithium battery components are connected in series and in parallel, the parallel battery pack requires that each battery voltage is the same, the output voltage is equal to the voltage of one battery, and the parallel battery pack can provide stronger current.

Along with the development of lithium battery technology, the energy density of a lithium battery pack is continuously improved, and the heat generated by the lithium battery pack with high energy density in the use process is also improved, so that the risk of overheat generation is also increased, and in the research and development process of the lithium battery pack, the design of a protection structure of the lithium battery pack is also particularly important, for example, chinese patent with publication number of CN108933296B discloses a lithium ion battery pack, and the width direction of the battery module is matched with the length direction of the lithium ion battery pack by adopting a side-placing and fixing mode for two back-to-back assembling the battery module, so that the space utilization rate of the battery pack with high space surplus in the height direction can be improved, the heat dissipation of the lithium battery pack is realized by a water cooling plate, and the safety risk of the lithium battery due to heat generation is reduced.

According to the lithium battery pack protection and regulation device, although the space utilization rate of the lithium battery pack in the height direction is improved, and the heat dissipation of the lithium battery pack is realized by using a water cooling mode, in the practical use process, the installed lithium battery is located in the airtight space between the lower box body and the battery pack upper cover, when the lower box body or the battery pack upper cover is locally damaged and cannot provide effective protection for the lithium battery pack, the airtight space is invaded by the damaged position to avoid external impurities, the use safety of the lithium battery pack is affected, the lower box body or the battery pack upper cover is required to be integrally replaced, and the use and maintenance cost of the lithium battery pack is increased.

Disclosure of Invention

The invention aims to provide a lithium battery pack protection and adjustment device to solve the problems that in the actual use process of the existing lithium battery pack, the installed lithium batteries are located in a closed space between a lower box body and an upper cover of the battery pack, when the lower box body or the upper cover of the battery pack is damaged locally and cannot provide effective protection for the lithium battery pack, in order to avoid the invasion of external impurities into the closed space at the damaged position, the use safety of the lithium battery pack is affected, the lower box body or the upper cover of the battery pack is required to be replaced integrally, and the use and maintenance cost of the lithium battery pack is increased.

In order to solve the technical problems, the invention provides the following technical scheme:

the lithium battery pack protection and adjustment device comprises a battery pack used for limiting and protecting a battery pack, wherein the battery pack comprises a first end connecting part and a second end connecting part which are used for limiting and protecting battery pack end cells, one side, close to each other, of each of the first end connecting part and the second end connecting part is provided with a plurality of connected middle connecting parts, and each middle connecting part is provided with a temperature protection part used for cooling adjacent battery cells in the battery pack; the middle connecting part, the first end connecting part and the second end connecting part are also used for synchronously and electrically connecting the battery cells of the battery pack in the installation process; the middle connecting part comprises a middle box matched with the appearance of the battery cell, two opposite sides of the middle box are communicated, a connecting groove is formed in one communicated side of the middle box, a first plugboard, two second plugboards and a third plugboard matched with the connecting groove are fixedly connected to the other communicated side of the middle box, and the first plugboard, the second plugboard and the third plugboard are connected to one side, close to the middle box, of the middle box; the first end connecting part comprises a first pole box matched with the shape of the battery cell, and a connecting groove is formed in one side, close to the middle box, of the first pole box; the second end connecting part comprises a second pole box matched with the appearance of the battery cell, a first plugboard, two second plugboards and a third plugboard which are matched with the connecting groove are fixedly connected to one side, close to the middle box, of the second pole box, one side, close to the middle box, of the first pole box and the second pole box is communicated, and one side, far from the middle box, of the first pole box and the second pole box is closed; the lengths of the first plugboard, the second plugboard and the third plugboard are sequentially decreased, transition angles are formed at edge angle positions of the first plugboard and the second plugboard, the tail end of the transition angle on the first plugboard is positioned at one side, far away from the middle box, of the second plugboard, and the tail end of the transition angle on the second plugboard is positioned at one side, far away from the middle box, of the third plugboard; a plurality of connecting lugs are fixedly connected to the middle connecting part, the first end connecting part and the second end connecting part; the battery pack is characterized in that a protruding portion higher than the electrode portion of the battery cell is arranged on the middle box, a connecting block is fixedly connected to the inner wall of the top of the protruding portion, a first connecting elastic piece used for electrically connecting two adjacent battery cell electrodes is fixedly connected to one side, close to the battery cell, of the connecting block, a second connecting elastic piece and a third connecting elastic piece which are electrically connected with different electrode portions of the battery pack and are electrically connected to one side, close to the second electrode box, of the inner wall of one side, close to the second electrode box, of the connecting block are fixedly connected with a first connecting wire and a second connecting wire which are electrically connected with the second connecting elastic piece and the third connecting elastic piece respectively.

Preferably, the top inner wall of bellying is provided with two preformings, the bottom fixedly connected with second arch of preforming, the chamfer has been seted up to the loose end of preforming.

Preferably, the top of the pressing piece is fixedly connected with a first protrusion, the pressing piece and the connection position of the first protrusion are in smooth transition, and one end of the first protrusion, which is far away from the second protrusion, is arc-shaped.

Preferably, a first through hole and a first groove which are communicated are formed in the middle box, the temperature protection component comprises a connecting plate matched with the first groove, a temperature regulating plate penetrating through and extending into the middle box is fixedly connected to the connecting plate, and heat conducting pads are fixedly connected to two opposite sides of the temperature regulating plate.

Preferably, the middle box is provided with a limit table fixedly connected with the top and the bottom of one side of the first through hole, a guide chute communicated with the first through hole is arranged on the limit table, a limit strip matched with the guide chute is fixedly connected on the temperature regulating plate, wing-shaped grooves communicated with the first through hole are arranged on two opposite sides of the first through hole, and the wing-shaped grooves are in clearance fit with the cross section of one side of the heat conducting pad.

Preferably, the two opposite sides of the temperature regulating plate are fixedly connected with limiting frames matched with the outer contour of the heat conducting pad, the thickness of the limiting frames is smaller than that of the heat conducting pad, and the wing-shaped grooves are in clearance fit with one sides of the limiting frames.

Preferably, a limit groove matched with one side of the temperature adjusting plate is formed in the inner wall of one side, far away from the first through hole, of the middle box.

Preferably, the middle box is provided with a first buffer pad which is matched with the outer contour of the battery cell and is fixedly connected with the inner wall of one side of the connecting groove, and a second buffer pad is fixedly connected with the inner wall of one side of the first pole box and the inner wall of one side of the second pole box which are mutually far away.

Preferably, sealing rings for sealing the connection positions are arranged at the connection positions of the intermediate connection part, the first end connection part and the second end connection part.

Preferably, a sealing ring for sealing the connection position is arranged on one side of the connecting plate, which is close to the middle box.

Compared with the prior art, the invention has at least the following beneficial effects:

in the above-mentioned scheme, through setting up intermediate junction spare, first end connecting spare, second end connecting spare, temperature protection part, when the first utmost point case of the battery package of constituteing, second extremely case or arbitrary intermediate tank damage, through removing the fixed of the engaging lug at damage position, can lift it off and change, ensured the safe in utilization of lithium cell group, reduced the use maintenance cost of lithium cell group, simultaneously, use this mode still can increase or reduce intermediate junction spare's quantity as required to adjust the electric core quantity in the group battery, further reduce the degree of difficulty that vehicle lithium cell group repacks.

Through setting up first picture peg, second picture peg and third picture peg, the in-process of installation first utmost point case, intermediate box and second extremely case, insert first picture peg in the spread groove earlier, improve the grafting fault tolerance of first picture peg and spread groove through the fillet on the first picture peg, increase the installation convenience of first picture peg, after the fillet on the first picture peg is submerged completely in the spread groove, under the cooperation of first picture peg and spread groove, the grafting fault tolerance of second picture peg and spread groove is improved through the fillet on the second picture peg in the same way, after the fillet on the second picture peg is submerged completely in the spread groove, under the cooperation of first picture peg, second picture peg and spread groove, the installation of two adjacent parts can be accomplished to third picture peg automatic alignment spread groove, continue to promote intermediate box, first utmost point case or second extremely case, easy operation is convenient, simultaneously, the reservation position to two adjacent parts is convenient for follow-up through the fixed connection of bolt and nut to the spread lug through this mode, further reduce the installation degree of difficulty.

Through setting up connecting block, first connection shell fragment, second connection shell fragment, third connection shell fragment, at adjacent first utmost point case, the in-process of middle case or second extreme incasement installation, the electric core utmost point portion in middle case or the second extreme incasement can with the one end contact of first connection shell fragment, and extrude first connection shell fragment, make interval one section distance between first connection shell fragment and the bellying through setting up the connecting block, avoid causing the interference to the elastic deformation of first connection shell fragment, through the utmost point portion electric connection of first connection shell fragment to two adjacent electric cores, the same reason, make second connection shell fragment and third connection shell fragment and the conflict of group battery tip electric core, can realize first utmost point case, middle case and second extreme incasement installation in-process, the synchronous operation to group battery electric core electric connection, it is simple convenient.

Through setting up connecting block, first connection shell fragment, second connection shell fragment, third connection shell fragment, at the installation of first utmost point case, intermediate box and second extremely case, along with the degree of depth increase of first picture peg insertion spread groove, first picture peg can contact with first arch to extrude first arch, make first arch drive the preforming bending downwards, and extrude first connection shell fragment through the second arch, and then improve the conflict stability of first connection shell fragment and electric core utmost point portion, avoid first connection shell fragment and electric core utmost point portion to produce the pine and take off, ensure the safety in utilization of group battery.

Through setting up the first arch with the smooth transition of preforming hookup location department, avoid first picture peg to insert the in-process card of spread groove in this hookup location department, ensure the smoothness nature of first picture peg insertion action, further reduce the installation degree of difficulty.

Through setting up spacing frame and spacing the heat conduction pad, avoid the heat conduction pad to be rubbed by the side wall of first through-hole and produce the skew at the in-process that gets into the centre tank, change or reduce the heat conduction pad under the extrusion of temperature regulation board with the area of contact of electric core, reduce the radiating effect of temperature regulation board to electric core, guide the temperature regulation board in the installation through setting up spacing and guide spout, avoid the temperature regulation board to produce the skew at the installation, lead to the heat conduction pad to contact with the side wall of first through-hole, cause the damage on heat conduction pad surface, and then influence the heat conduction effect of heat conduction pad, and further ensure the installation stability of temperature regulation board in the centre tank.

Through setting up the spacing groove and spacing the expansion end of temperature regulation board, guarantee temperature regulation board's installation stability avoids the temperature regulation board to receive the electric core conflict effect of inserting in the middle case to produce and rocks and lead to damaging, and then causes adverse effect such as weeping, reduces the leakproofness and the safety in utilization of battery package.

Drawings

The accompanying drawings, which are incorporated herein and form a part of the specification, illustrate embodiments of the present disclosure and, together with the description, further serve to explain the principles of the disclosure and to enable a person skilled in the pertinent art to make and use the disclosure.

Fig. 1 is a schematic perspective view of a lithium battery pack protection and adjustment device;

fig. 2 is a schematic diagram of a perspective structure of the lithium battery pack protection and adjustment device with a part of the middle box removed;

FIG. 3 is a schematic view of a three-dimensional enlarged structure of an intermediate connecting member;

FIG. 4 is an enlarged plan view of the intermediate connecting member;

FIG. 5 is a perspective enlarged schematic view of a first view of the intermediate box;

FIG. 6 is an enlarged partial cross-sectional schematic view of the intermediate tank;

FIG. 7 is an enlarged schematic view of the structure of FIG. 6A;

fig. 8 is a schematic view of a three-dimensional enlarged structure of the connection block and the first connection spring after assembly;

FIG. 9 is a schematic view of a second perspective and enlarged structure of the intermediate box;

FIG. 10 is a perspective enlarged schematic view of a third view of the intermediate box;

FIG. 11 is a schematic view of a three-dimensional enlarged structure of a temperature protection member;

FIG. 12 is a schematic view of a perspective enlarged structure of the first end connecting member;

fig. 13 is a schematic view of a perspective enlarged structure of the second end connecting member.

[ reference numerals ]

1. A battery pack; 2. an intermediate connection member; 3. a first end connection member; 4. a second end connection member; 5. a temperature protection component; 6. an intermediate box; 7. a boss; 8. a connecting block; 9. a first connecting spring plate; 10. a connecting groove; 11. tabletting; 12. a first protrusion; 13. a second protrusion; 14. a first plugboard; 15. a second plugboard; 16. a third plugboard; 17. round corners; 18. a first pole box; 19. the second connecting spring piece; 20. a first connecting line; 21. a second pole box; 22. a third connecting spring plate; 23. a second connecting line; 24. a temperature adjusting plate; 25. a thermal pad; 26. a connecting plate; 27. a limit frame; 28. a limit bar; 29. a limiting table; 30. a first through hole; 31. an airfoil slot; 32. a guide chute; 33. a limit groove; 34. a first cushion pad; 35. a second cushion pad; 36. a first groove; 37. and a connecting lug.

While particular structures and devices are shown in the drawings to enable a clear implementation of embodiments of the invention, this is for illustrative purposes only and is not intended to limit the invention to the particular structures, devices and environments, which may be modified or adapted by those of ordinary skill in the art, as desired, and which remain within the scope of the appended claims.

Detailed Description

The following describes a lithium battery pack protection and adjustment device in detail with reference to the accompanying drawings and specific embodiments. While the invention has been described herein in terms of the preferred and preferred embodiments, the following embodiments are intended to be more illustrative, and may be implemented in many alternative ways as will occur to those of skill in the art; and the accompanying drawings are only for the purpose of describing the embodiments more specifically and are not intended to limit the invention specifically.

It should be noted that references in the specification to "one embodiment," "an example embodiment," "some embodiments," etc., indicate that the embodiment described may include a particular feature, structure, or characteristic, but every embodiment may not necessarily include the particular feature, structure, or characteristic. Further, when a particular feature, structure, or characteristic is described in connection with an embodiment, it is submitted that it is within the knowledge of one skilled in the relevant art to effect such feature, structure, or characteristic in connection with other embodiments whether or not explicitly described.

Generally, the terminology may be understood, at least in part, from the use of context. For example, the term "one or more" as used herein may be used to describe any feature, structure, or characteristic in a singular sense, or may be used to describe a combination of features, structures, or characteristics in a plural sense, depending at least in part on the context. In addition, the term "based on" may be understood as not necessarily intended to convey an exclusive set of factors, but may instead, depending at least in part on the context, allow for other factors that are not necessarily explicitly described.

It will be understood that the meanings of "on … …", "over … …" and "over … …" in this disclosure should be interpreted in the broadest sense so that "on … …" means not only "directly on" but also includes meaning "directly on" something with intervening features or layers therebetween, and "over … …" or "over … …" means not only "on" or "over" something, but also may include its meaning "on" or "over" something without intervening features or layers therebetween.

Furthermore, spatially relative terms such as "under …," "under …," "lower," "above …," "upper," and the like may be used herein for ease of description to describe one element or feature's relationship to another element or feature as illustrated in the figures. Spatially relative terms are intended to encompass different orientations of the device in use or operation in addition to the orientation depicted in the figures. The device may be otherwise oriented and the spatially relative descriptors used herein may similarly be interpreted accordingly.

As shown in fig. 1-6, 12 and 13, the embodiment of the invention provides a lithium battery pack protection and adjustment device, which comprises a battery pack 1 for limiting and protecting a battery pack, wherein the battery pack 1 comprises a first end connecting part 3 and a second end connecting part 4 for limiting and protecting end cells of the battery pack, one side, close to each other, of the first end connecting part 3 and the second end connecting part 4 is provided with a plurality of connected middle connecting parts 2, and the middle connecting parts 2 are provided with temperature protection parts 5 for cooling adjacent cells in the battery pack; the middle connecting part 2, the first end connecting part 3 and the second end connecting part 4 are also used for synchronously electrically connecting the cells of the battery pack in the installation process, and each adjacent cell in the battery pack is connected in series; the middle connecting part 2 comprises a middle box 6 matched with the appearance of the battery cell, two opposite sides of the middle box 6 are communicated, a connecting groove 10 is formed in one communicated side of the middle box 6, a first plugboard 14, two second plugboards 15 and a third plugboard 16 matched with the connecting groove 10 are fixedly connected to the other communicated side of the middle box 6, and one sides of the first plugboard 14, the second plugboards 15 and the third plugboards 16 close to the middle box 6 are connected; the first end connecting part 3 comprises a first pole box 18 which is matched with the shape of the battery cell, and a connecting groove 10 is formed in one side, close to the middle box 6, of the first pole box 18; the second end connecting part 4 comprises a second pole box 21 matched with the appearance of the battery cell, a first plugboard 14 matched with the connecting groove 10, two second plugboards 15 and a third plugboard 16 are fixedly connected to one side, close to the middle box 6, of the second pole box 21, one side, close to the middle box 6, of the first pole box 18 and the second pole box 21 is communicated, one side, far away from the middle box 6, of the first pole box 18 and the second pole box 21 is closed, and a plurality of connecting lugs 37 are fixedly connected to the middle connecting part 2, the first end connecting part 3 and the second end connecting part 4.

Through setting up intermediate junction part 2, first end junction part 3, second end junction part 4, temperature protection part 5, during the installation, insert the electric core in the intermediate tank 6 of installing temperature protection part 5 from the one side of seting up spread groove 10, until the electric core is contradicted with temperature protection part 5, then with first picture peg 14, second picture peg 15, third picture peg 16 aim at spread groove 10 and insert, with the first polar box 18 and the second polar box 21 that install adjacent intermediate tank 6 and lie in group battery both ends, finally fix the engaging lug 37 on adjacent first polar box 18 through the cooperation of bolt and nut, intermediate tank 6, second polar box 21, can realize the installation of battery package 1, simple convenient easy operation, when the first polar box 18 of battery package 1 of constituteing, second polar box 21 or arbitrary intermediate tank 6 damage, through removing the fixed of engaging lug 37 at damage position, can be lifted off and change it, the use safety of lithium cell group has reduced the use maintenance cost of lithium cell group, simultaneously, use this mode can also increase or reduce the quantity of connecting parts 2 according to needs, the vehicle inner quantity of battery group battery of the further improvement, the quantity of the lithium cell group is reduced.

As shown in fig. 5 and 6, in this embodiment, the lengths of the first board 14, the second board 15 and the third board 16 decrease in sequence, the corner positions of the first board 14 and the second board 15 are respectively provided with a round corner 17, the end of the round corner 17 on the first board 14 is located at one side of the second board 15 away from the middle box 6, and the end of the round corner 17 on the second board 15 is located at one side of the third board 16 away from the middle box 6.

In the process of installing the first pole box 18, the middle box 6 and the second pole box 21 by arranging the first plugboard 14, the second plugboard 15 and the third plugboard 16, the first plugboard 14 is inserted into the connecting groove 10, the plug-in fault tolerance of the first plugboard 14 and the connecting groove 10 is improved by the round corners 17 on the first plugboard 14, the installation convenience of the first plugboard 14 is improved, when the round corners 17 on the first plugboard 14 are completely immersed into the connecting groove 10, the second plugboard 15 is automatically aligned with the connecting groove 10 under the cooperation of the first plugboard 14 and the connecting groove 10, and similarly, the plug-in fault tolerance of the second plugboard 15 and the connecting groove 10 is improved by the round corners 17 on the second plugboard 15, when the round corners 17 on the second plugboard 15 are completely immersed into the connecting groove 10, the third plugboard 16 is automatically aligned with the connecting groove 10 under the cooperation of the first plugboard 14, the first pole box 18 or the second pole box 21 is continuously pushed, the installation of two adjacent parts can be completed, the operation is simple and convenient, and the difficulty of installing two adjacent parts can be further reduced by fixing the bolts and the bolts 37 through the scheduled positions of the two adjacent parts.

As shown in fig. 1-8, fig. 12 and fig. 13, in this embodiment, the middle case 6 is provided with a protruding portion 7 higher than the electrode portion of the battery cell, the inner wall of the top of the protruding portion 7 is fixedly connected with a connecting block 8, the adjacent connecting blocks 8 are arranged in a staggered manner, one side of the connecting block 8 close to the battery cell is fixedly connected with a first connecting elastic piece 9 for electrically connecting two adjacent battery cell electrodes, the first connecting elastic piece 9 is made of a conductive material, the inner wall of one side of the first electrode case 18 and one side of the second electrode case 21 close to each other are respectively fixedly connected with a second connecting elastic piece 19 and a third connecting elastic piece 22 electrically connected with different electrodes of the battery cells at two ends of the battery pack, and one side of the first electrode case 18 and one side of the second electrode case 21 away from each other is respectively fixedly connected with a first connecting wire 20 and a second connecting wire 23 electrically connected with the second connecting elastic piece 19 and the third connecting elastic piece 22, and the electrical connection of the first connecting wire 20 and the second connecting wire 23 to the total positive electrode and the total negative electrode of the battery pack is realized through the second connecting elastic pieces 19 and the third connecting elastic pieces 22.

Through setting up connecting block 8, first connection shell fragment 9, second connection shell fragment 19, third connection shell fragment 22, at adjacent first utmost point case 18, the in-process of middle case 6 or the installation of second extremely case 21, the electric core utmost point portion in middle case 6 or the second extremely case 21 can be with the one end contact of first connection shell fragment 9, and extrude first connection shell fragment 9, make first connection shell fragment 9 and bellying 7 interval a section distance between through setting up connecting block 8, avoid causing the interference to the elastic deformation of first connection shell fragment 9, through the utmost point electric connection of first connection shell fragment 9 to two adjacent electric cores, the same reason makes second connection shell fragment 19 and third connection shell fragment 22 contradict with group battery tip electric core, can realize first utmost point case 18, in-process of middle case 6 and the installation of second extremely case 21, to group battery electric core electric connection's synchronous operation, it is simple convenient.

As shown in fig. 7 and 8, in this embodiment, two pressing sheets 11 are disposed on the top inner wall of the protruding portion 7, a second protrusion 13 is fixedly connected to the bottom of the pressing sheet 11, a chamfer is formed at the movable end of the pressing sheet 11, a first protrusion 12 is fixedly connected to the top of the pressing sheet 11, the connection position of the pressing sheet 11 and the first protrusion 12 is smoothly transited, and one end of the first protrusion 12 away from the second protrusion 13 is arc-shaped.

Through setting up connecting block 8, first connection shell fragment 9, second connection shell fragment 19, third connection shell fragment 22, at first utmost point case 18, intermediate box 6 and the installation of second extremely case 21, along with the degree of depth increase of first picture peg 14 insertion spread groove 10, first picture peg 14 can contact with first protruding 12 to extrude first protruding 12, make first protruding 12 drive preforming 11 bending downwards, and extrude first connection shell fragment 9 through second protruding 13, and then improve the conflict stability of first connection shell fragment 9 and electric core pole portion, avoid first connection shell fragment 9 and electric core pole portion to produce the pine and take off, ensure the safety in utilization of group battery.

By arranging the first bulge 12 which smoothly transits with the connection position of the pressing sheet 11, the first plugboard 14 is prevented from being clamped at the connection position in the process of being inserted into the connection groove 10, the smoothness of the insertion action of the first plugboard 14 is ensured, and the installation difficulty is further reduced.

As shown in fig. 2, 10 and 11, in this embodiment, the middle box 6 is provided with a first through hole 30 and a first groove 36 that are communicated with each other, the temperature protection component 5 includes a connection plate 26 that is adapted to the first groove 36, the connection plate 26 is fixedly connected with a temperature regulation plate 24 that penetrates through and extends into the middle box 6, two opposite sides of the temperature regulation plate 24 are fixedly connected with a heat conducting pad 25, the temperature regulation plate 24 is in the prior art, the temperature regulation plate 24 is provided with a liquid inlet and a liquid outlet that are communicated with the outside, and the working principle is that cooling liquid continuously enters the temperature regulation plate 24 through the liquid inlet and flows out of the temperature regulation plate 24 through the liquid outlet to realize temperature regulation of the temperature regulation plate 24, so as to realize temperature regulation of a battery cell, and through setting the heat conducting pad 25 to improve the heat conducting effect of the temperature regulation plate 24 and the battery cell, and avoid overheat or underrun of the temperature of the battery pack, further ensure the service safety of the battery pack, and prolong the service life of the battery pack.

As shown in fig. 9-11, in this embodiment, the top and bottom inner walls of one side of the middle box 6 provided with the first through hole 30 are fixedly connected with a limiting table 29, a guiding chute 32 communicated with the first through hole 30 is provided on the limiting table 29, a limiting bar 28 matched with the guiding chute 32 is fixedly connected on the temperature adjusting plate 24, wing grooves 31 communicated with the first through hole 30 are provided on two opposite sides of the first through hole 30, the wing grooves 31 are in clearance fit with the cross section of one side of the heat conducting pad 25, limiting frames 27 matched with the outer contour of the heat conducting pad 25 are fixedly connected on two opposite sides of the temperature adjusting plate 24, the thickness of the limiting frames 27 is smaller than that of the heat conducting pad 25, and the wing grooves 31 are in clearance fit with one side of the limiting frames 27.

Through setting up spacing frame 27 and spacing to thermal pad 25, avoid thermal pad 25 to be rubbed by the side wall of first through-hole 30 and produce the skew at the in-process that gets into intermediate box 6, change or reduce thermal pad 25 under the extrusion of temperature regulation board 24 with the area of contact of electric core, reduce the radiating effect of temperature regulation board 24 to electric core, guide temperature regulation board 24 in the installation through setting up spacing 28 and guide spout 32, avoid temperature regulation board 24 to produce the skew in the installation, lead to thermal pad 25 and the contact of the lateral wall of first through-hole 30, cause the damage on thermal pad 25 surface, and then influence the heat conduction effect of thermal pad 25, and further ensure the installation stability of temperature regulation board 24 in intermediate box 6.

As shown in fig. 10, in this embodiment, the inner wall of the side, far away from the first through hole 30, of the middle box 6 is provided with a limit groove 33 adapted to one side of the temperature adjusting plate 24, and the movable end of the temperature adjusting plate 24 is limited by setting the limit groove 33, so that the installation stability of the temperature adjusting plate 24 is ensured, the damage caused by shaking caused by the interference of the battery core inserted into the middle box 6 on the temperature adjusting plate 24 is avoided, and further adverse effects such as liquid leakage are caused, and the tightness and the use safety of the battery pack 1 are reduced.

As shown in fig. 9, 10, 11 and 12, in this embodiment, the inner walls of one side of the middle box 6 and the first pole box 18, on which the connecting groove 10 is formed, are fixedly connected with first buffer pads 34 adapted to the outer contour of the battery core, the inner walls of one side of the first pole box 18 and the second pole box 21, on which the first buffer pads 34 and the second buffer pads 35 are far away from each other, are fixedly connected with second buffer pads 35, and the battery core is covered by the first buffer pads 34 and the second buffer pads 35, so that collision between the battery core and the middle box 6, the first pole box 18 and the second pole box 21 in the long-term use process is avoided, the service life of the battery core is reduced, and the use safety of the battery core is ensured.

As an implementation manner of this embodiment, sealing rings (not shown in the drawing) for sealing the connection positions are provided at the connection positions of the intermediate connection member 2, the first end connection member 3 and the second end connection member 4, a sealing ring (not shown in the drawing) for sealing the connection positions is provided at one side of the connection plate 26 near the intermediate case 6, and the connection positions of the intermediate connection member 2, the first end connection member 3, the second end connection member 4 and the temperature protection member 5 are sealed by the sealing rings, so that the tightness and the waterproof property of the battery pack 1 are ensured, and the use safety and the service life of the battery pack are improved.

According to the technical scheme, the middle connecting part, the first end connecting part, the second end connecting part and the temperature protecting part are arranged, the battery core is plugged into the middle box provided with the temperature protecting part from one side provided with the connecting groove until the battery core is in contact with the temperature protecting part, then the first plugboard, the second plugboard and the third plugboard are aligned with the connecting groove and are inserted into the connecting groove so as to install the adjacent middle box and the first pole box and the second pole box which are positioned at two ends of the battery pack, finally, the connecting lugs on the adjacent first pole box, the middle box and the second pole box are fixed through the matching of bolts and nuts, so that the battery pack can be installed, the battery pack is simple, convenient and easy to operate, and the battery pack can be detached and replaced by releasing the fixing of the connecting lugs at the damaged parts when the first pole box, the second pole box or any middle box of the formed battery pack is damaged, so that the use safety of the lithium battery pack is ensured, the use and maintenance cost of the lithium battery pack is reduced, and meanwhile, the number of the middle connecting parts can be increased or reduced according to the requirement, the number of the battery cells in the battery pack is adjusted, and the vehicle battery pack is further reduced.

The temperature regulation of the temperature regulation plate is realized through the continuous entering temperature regulation plate of coolant liquid through the inlet and the outflow temperature regulation plate of liquid outlet, and then the temperature regulation of electric core is realized, improves the heat conduction effect of temperature regulation plate and electric core through setting up the heat conduction pad, avoids the overheated or too low temperature of group battery through the temperature regulation to group battery, further ensures the safety in utilization of group battery, prolongs the life of group battery.

Through setting up first blotter and second blotter and cladding the electric core, avoid the electric core to produce the collision with intermediate box, first utmost point case and second extremely case in long-term use, reduce the life of electric core, ensure the safety in utilization of electric core.

The invention is intended to cover any alternatives, modifications, equivalents, and variations that fall within the spirit and scope of the invention. In the following description of preferred embodiments of the invention, specific details are set forth in order to provide a thorough understanding of the invention, and the invention will be fully understood to those skilled in the art without such details. In other instances, well-known methods, procedures, flows, components, circuits, and the like have not been described in detail so as not to unnecessarily obscure aspects of the present invention.

Those of ordinary skill in the art will appreciate that all or a portion of the steps in implementing the methods of the embodiments described above may be implemented by a program that instructs associated hardware, and the program may be stored on a computer readable storage medium, such as: ROM/RAM, magnetic disks, optical disks, etc.

The foregoing is merely a preferred embodiment of the present invention and it should be noted that modifications and adaptations to those skilled in the art may be made without departing from the principles of the present invention, which are intended to be comprehended within the scope of the present invention.

Claims

1. A lithium battery pack protection and adjustment device, comprising: the battery pack is used for limiting and protecting a battery pack, and comprises a first end connecting part and a second end connecting part which are used for limiting and protecting battery cells at the end parts of the battery pack, wherein one side, close to each other, of each of the first end connecting part and the second end connecting part is provided with a plurality of connected middle connecting parts, and each middle connecting part is provided with a temperature protecting part used for cooling adjacent battery cells in the battery pack;

the middle connecting part, the first end connecting part and the second end connecting part are also used for synchronously and electrically connecting the battery cells of the battery pack in the installation process;

the middle connecting part comprises a middle box matched with the appearance of the battery cell, two opposite sides of the middle box are communicated, a connecting groove is formed in one communicated side of the middle box, a first plugboard, two second plugboards and a third plugboard matched with the connecting groove are fixedly connected to the other communicated side of the middle box, and the first plugboard, the second plugboard and the third plugboard are connected to one side, close to the middle box, of the middle box;

the first end connecting part comprises a first pole box matched with the shape of the battery cell, and a connecting groove is formed in one side, close to the middle box, of the first pole box;

the second end connecting part comprises a second pole box matched with the appearance of the battery cell, a first plugboard, two second plugboards and a third plugboard which are matched with the connecting groove are fixedly connected to one side, close to the middle box, of the second pole box, one side, close to the middle box, of the first pole box and the second pole box is communicated, and one side, far from the middle box, of the first pole box and the second pole box is closed;

the lengths of the first plugboard, the second plugboard and the third plugboard are sequentially decreased, transition angles are formed at edge angle positions of the first plugboard and the second plugboard, the tail end of the transition angle on the first plugboard is positioned at one side, far away from the middle box, of the second plugboard, and the tail end of the transition angle on the second plugboard is positioned at one side, far away from the middle box, of the third plugboard;

a plurality of connecting lugs are fixedly connected to the middle connecting part, the first end connecting part and the second end connecting part;

the middle box is provided with a protruding part higher than the electrode parts of the battery cells, the inner wall of the top of the protruding part is fixedly connected with a connecting block, one side of the connecting block, which is close to the battery cells, is fixedly connected with a first connecting elastic piece used for electrically connecting two adjacent battery cell electrodes, the inner wall of one side, which is close to the first electrode box and the second electrode box, is respectively fixedly connected with a second connecting elastic piece and a third connecting elastic piece which are electrically connected with different electrode of the battery cells at the two ends of the battery pack, and one side, which is far away from the first electrode box and the second electrode box, is respectively fixedly connected with a first connecting wire and a second connecting wire which are electrically connected with the second connecting elastic piece and the third connecting elastic piece;

the top inner wall of bellying is provided with two preformings, the bottom fixedly connected with second arch of preforming, the chamfer has been seted up to the expansion end of preforming, the top fixedly connected with first arch of preforming, the preforming with the bellied hookup location department rounding off of first, first arch is kept away from the bellied one end of second is the arc.

2. The lithium battery pack protection and adjustment device according to claim 1, wherein the middle box is provided with a first through hole and a first groove which are communicated with each other, the temperature protection component comprises a connecting plate matched with the first groove, the connecting plate is fixedly connected with a temperature adjustment plate which penetrates through and extends into the middle box, and two opposite sides of the temperature adjustment plate are fixedly connected with heat conduction pads.

3. The lithium battery pack protection and adjustment device according to claim 2, wherein the middle box is provided with a limit table fixedly connected with the top and the bottom of one side of the first through hole, a guide chute communicated with the first through hole is formed in the limit table, a limit strip matched with the guide chute is fixedly connected to the temperature adjustment plate, wing-shaped grooves communicated with the first through hole are formed in two opposite sides of the first through hole, and the wing-shaped grooves are in clearance fit with the cross section of one side of the heat conducting pad.

4. The lithium battery pack protection and adjustment device according to claim 3, wherein limiting frames matched with the outer contour of the heat conducting pad are fixedly connected to two opposite sides of the temperature adjusting plate, the thickness of the limiting frames is smaller than that of the heat conducting pad, and the wing-shaped grooves are in clearance fit with one sides of the limiting frames.

5. The lithium battery pack protection and adjustment device according to claim 1, wherein a limit groove matched with one side of the temperature adjusting plate is formed in the inner wall of one side of the middle box away from the first through hole.

6. The lithium battery pack protection and adjustment device according to claim 1, wherein the inner walls of one side of the middle box and the first pole box, on which the connecting grooves are formed, are fixedly connected with first buffer pads matched with the outer contours of the battery cells, and the inner walls of one side, away from each other, of the first pole box and the second pole box are fixedly connected with second buffer pads.

7. The lithium battery pack protection and adjustment device according to claim 1, wherein sealing rings for sealing the connection positions are provided at the connection positions of the intermediate connection member, the first end connection member, and the second end connection member.

8. The lithium battery pack protection and adjustment device according to claim 1, wherein a sealing ring for sealing a connection position is arranged on one side of the connecting plate, which is close to the middle box.