CN217788469U - Assembly structure of battery electric pile and battery electric pile - Google Patents

Abstract

The utility model relates to a battery technology field, in particular to assembly structure and battery pile of battery pile. The assembly structure of battery pile for assembling battery pile subassembly, including first splint, the second splint, and a plurality of connecting piece, first splint are used for installing in a terminal surface of battery pile subassembly, a plurality of connecting holes have been seted up to the periphery of first splint, the second splint are used for installing in a terminal surface that battery pile subassembly deviates from first splint, the fixed slot is seted up towards the surface of first splint to the second splint, the connecting piece is including connecting the body, and locate first connecting portion and the second connecting portion of connecting the body both ends, it pastes the side tight at battery pile subassembly to connect the body, first connecting portion are fixed in the connecting hole, the second connecting portion are fixed in the fixed slot, in order to compress tightly battery pile subassembly. Therefore, the installation of the battery stack assembly is simplified, the installation error is reduced, and the installation efficiency is improved.

Description

Assembly structure of battery electric pile and battery electric pile

Technical Field

The utility model relates to a battery technology field, in particular to assembly structure and battery pile of battery pile.

Background

The fuel cell stack consists of end plates, insulating plates, current collecting plates, bipolar plates and membrane electrode assemblies, wherein the end plates, the insulating plates, the current collecting plates, the bipolar plates and the membrane electrode assemblies are assembled together through pressing force, and are transferred to a binding belt welding machine through a transfer trolley to be bent, bound and welded by steel belts. The error of the press-fitting force is caused by transferring to a transfer trolley from the stacking machine, then the error is caused by transferring to a binding belt welding machine, the accumulated error is large, great influence is caused on the sealing performance and the gas diffusion layer of the membrane electrode, and the consistency of the stack product cannot be effectively guaranteed. Meanwhile, the bandage is large in welding and size, a large amount of manpower, material resources and financial resources are consumed, and the product cost is greatly increased.

SUMMERY OF THE UTILITY MODEL

The utility model aims at providing an assembly structure of battery galvanic pile aims at simplifying the installation of battery galvanic pile subassembly, reduces installation error, improves the installation effectiveness.

In order to achieve the above object, the utility model provides an assembly structure of battery galvanic pile, assembly structure of battery galvanic pile includes: the assembly structure of the cell stack includes:

the first clamping plate is used for being mounted on one end face of the battery stack assembly, and a plurality of connecting holes are formed in the periphery of the first clamping plate;

the second clamping plate is used for being installed on one end face, away from the first clamping plate, of the battery stack assembly, and a fixing groove is formed in the surface, facing the first clamping plate, of the second clamping plate; and

a plurality of connecting pieces, each the connecting piece is including connecting the body, and locate the first connecting portion and the second connecting portion at connection body both ends, it is in to connect the body paste tightly the side of battery pile subassembly, first connecting portion are fixed in the connecting hole, the second connecting portion are fixed in the fixed slot, in order to incite somebody to action the battery pile subassembly compresses tightly.

Optionally, the first clamping plate is provided with an avoiding groove around the connecting hole for avoiding the first connecting portion.

Optionally, the first clamping plate is provided with a mounting groove towards the middle of the surface of the cell stack assembly, and a damping piece is placed in the mounting groove.

Optionally, a limiting groove is formed at the bottom of the mounting groove, and a guide piece formed on the end face of the cell stack assembly is placed in the limiting groove.

Optionally, the assembly structure of battery electric pile still includes first insulating plate, first insulating plate locates first splint with between the battery electric pile subassembly, first insulating plate orientation the protruding guide post that establishes in surface of first splint, the guide post overcoat is equipped with the dish spring, the guide post is inserted and is located the spacing inslot, the dish spring is located in the mounting groove.

Optionally, the outer circumferential surface of the second clamping plate is provided with a limiting block in a protruding manner towards the cell stack assembly, the limiting block is used for being clamped at the end of the cell stack assembly, and the projection of the limiting block on the connecting hole is provided with the fixing groove.

Optionally, the assembly structure of the cell stack further includes a second insulating plate, the second insulating plate is disposed between the second clamping plate and the cell stack assembly, an avoiding space is disposed at a peripheral edge of the second insulating plate, and the limiting block and the first connecting portion are disposed in the avoiding space;

and/or the connecting body is in a flat belt shape;

and/or the connecting body is made of rigid material;

and/or the number of the connecting bodies is ten.

Optionally, the first connecting portion includes a first connecting column and a first fastening bolt, the first connecting column is disposed at an end of the connecting body and is provided with a fixing hole, and the first fastening bolt passes through the first connecting column and the connecting hole and is screwed to the connecting hole.

Optionally, the second connecting portion includes a second connecting column and a second fastening bolt, the second connecting column is disposed at an end portion of the connecting body deviating from the first connecting column, and the second fastening bolt penetrates through the second connecting column and is screwed to the fixing groove.

The application also provides a battery pile, the battery pile include the assembly structure and the battery pile subassembly of battery pile, the battery pile subassembly is located first splint with between the second splint.

This application sets up at the both ends of battery galvanic pile subassembly through two splint to press from both sides two splint tightly through the connecting piece, accomplish the installation to battery galvanic pile subassembly, avoid the tradition to carry out the steel band and bend, bind and weld the step, the technological process that brings is loaded down with trivial details, the big problem of installation error. The assembly structure of battery pile includes first splint, the second splint, a plurality of connecting piece, a terminal surface of battery pile subassembly is located to first splint, a plurality of connecting holes have been seted up to the periphery of first splint, the second splint are located a terminal surface that battery pile subassembly deviates from first splint, the fixed slot is seted up in the projection department of connecting hole to the second splint, the connecting piece is including connecting the body, and first connecting portion and the second connecting portion of locating the connection body both ends, it pastes the side tight at battery pile subassembly to connect the body, connecting hole is connected to first connecting portion, the fixed slot is connected to the second connecting portion, in order to compress tightly the battery pile subassembly. Only need place battery pile subassembly between two splint in the installation to connect through the connecting piece and compress tightly, one step of installation targets in place, need not the multistep and transports, reduces installation error, improves the installation effectiveness. And, because the setting of fixed slot on the second splint for the second connecting portion are fixed in the fixed slot, can not protrusion in one side that the second splint deviates from the battery pile subassembly, the holding surface is located to the convenience with the second splint, and need not consider to dodge the second connecting portion, need not to improve the holding surface, reduce the auxiliary assembly for assembling the battery pile and provide, for example, if change the fixed slot into the through-hole, then after the second connecting portion passed the through-hole, protruding one side that deviates from the battery pile subassembly of locating the second splint, inconvenient support the second splint on the horizontal plane.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings needed to be used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the structures shown in the drawings without creative efforts.

Fig. 1 is a schematic structural view of an assembly structure of a battery stack according to the present invention;

FIG. 2 is an exploded view from a perspective of an assembly structure of the cell stack of FIG. 1;

FIG. 3 is an exploded view of the assembled structure of the cell stack of FIG. 1 from another perspective;

FIG. 4 is an exploded view of the assembled structure of the cell stack of FIG. 1 from yet another perspective;

FIG. 5 is an exploded view of the assembled structure of the cell stack of FIG. 1 from another perspective;

FIG. 6 is an exploded view of the assembled structure of the cell stack of FIG. 1 from yet another perspective;

fig. 7 is an exploded view of another perspective view of an assembly structure of the cell stack of fig. 1.

The reference numbers illustrate:

the objects, features and advantages of the present invention will be further described with reference to the accompanying drawings.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts belong to the protection scope of the present invention.

It should be noted that all the directional indicators (such as upper, lower, left, right, front, and rear … …) in the embodiments of the present invention are only used to explain the relative position relationship between the components, the motion situation, etc. in a specific posture (as shown in the drawings), and if the specific posture is changed, the directional indicator is changed accordingly.

In the present application, unless expressly stated or limited otherwise, the terms "connected" and "fixed" are to be construed broadly, e.g., "fixed" may be fixedly connected or detachably connected, or integrally formed; can be mechanically or electrically connected; they may be directly connected or indirectly connected through intervening media, or they may be connected internally or in any other suitable relationship, unless expressly stated otherwise. The specific meaning of the above terms in the present invention can be understood according to specific situations by those of ordinary skill in the art.

In addition, descriptions in the present application as to "first", "second", and the like are for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicit to the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In addition, the expression "and/or" as used throughout is meant to encompass three juxtaposed aspects, exemplified by "A and/or B", including either the A aspect, or the B aspect, or aspects in which both A and B are satisfied. In addition, the technical solutions in the embodiments may be combined with each other, but it must be based on the realization of those skilled in the art, and when the technical solutions are contradictory or cannot be realized, the combination of the technical solutions should not be considered to exist, and is not within the protection scope of the present invention.

As shown in fig. 1 to 7, for the assembly structure 100 of the battery stack, the two clamping plates are arranged at the two ends of the battery stack assembly 20, and the two clamping plates are clamped by the connecting member 50, so as to complete the installation of the battery stack assembly 20, and avoid the traditional steps of bending, binding and welding the steel strip, which causes the problems of tedious process and large installation error. The assembly structure 100 of battery pile includes first splint 10, second splint 30, a plurality of connecting pieces 50, a terminal surface of battery pile subassembly 20 is located to first splint 10, a plurality of connecting holes 11 have been seted up to the periphery of first splint 10, a terminal surface that battery pile subassembly 20 deviates from first splint 10 is located to second splint 30, fixed slot 31 is seted up towards the surface of first splint 10 to second splint 30, connecting piece 50 is including connecting body 51, and locate first connecting portion 53 and the second connecting portion 55 of connecting body 51 both ends, connecting body 51 pastes the side tight at battery pile subassembly 20, first connecting portion 53 is fixed in connecting hole 11, second connecting portion 55 are fixed in fixed slot 31, in order to compress tightly battery pile subassembly 20. In the installation process, the battery stack assembly 20 is only required to be placed between the two clamping plates and is connected and compressed through the connecting piece 50, so that the battery stack assembly is installed in place in one step, multi-step transportation is not required, the installation error is reduced, and the installation efficiency is improved. And, because the setting of fixed slot 31 on the second splint 30 for second connecting portion 55 is fixed in the fixed slot 31, can not bulge in the one side that second splint 30 deviates from battery pile subassembly 20, conveniently locate the holding surface with second splint 30, and need not consider to dodge second connecting portion 55, need not to improve the holding surface, reduce the auxiliary assembly for assembling battery pile and needs, for example, if, change fixed slot 31 into the through-hole, then second connecting portion 55 passes behind the through-hole, protruding one side of locating second splint 30 and deviating from battery pile subassembly 20, inconvenient second splint 30 that supports on the horizontal plane.

Further, as shown in fig. 1 and 2, the first clamping plate 10 is formed with a relief groove 110 around the connection hole 11 for relieving the first connection portion 53. Because first connecting portion 53 has certain size to and when compressing tightly two splint, need certain headspace in order to adjust the dynamics of compressing tightly, be formed with around connecting hole 11 at first splint 10 and dodge groove 110, make things convenient for first connecting portion 53 to adjust and be close to first splint 10 to form headspace, adjust suitable dynamics of compressing tightly.

Further, as shown in fig. 3 and 4, a mounting groove 13 is formed in the middle of the surface of the first clamping plate 10 facing the cell stack assembly 20, a vibration damping member is placed in the mounting groove 13, and when external temperature changes or rigid collision occurs during mounting and transportation, a certain buffering force is required to compensate for stress deformation of a sealing element in the cell stack, so that the original stack pressing force is maintained, and electrolyte leakage is avoided; for example, the damping member may be an elastic member, which may achieve a buffering effect, and is not limited in particular.

Further, spacing groove 130 has been seted up to the tank bottom of mounting groove 13, be used for placing the guide that forms at battery galvanic pile subassembly 20 terminal surface in the spacing groove 130, in order to realize with the accurate location of first splint 10 in the exact position, can set up the guide at battery galvanic pile subassembly 20's terminal surface, then correspond the spacing groove 130 of first splint 10 in this guide, realize the accuracy of position and place, this guide can be the guide post, or this guide post has magnetism, be equipped with the magnetic path in the spacing groove 130, in order to realize quick butt joint, and installation effectiveness is improved.

Further, as shown in fig. 2 and 4, the assembly structure 100 of the battery stack further includes a first insulating plate 70, the first insulating plate 70 is disposed between the first clamping plate 10 and the battery stack assembly 20, a guide post 71 is disposed on a surface of the first insulating plate 70 facing the first clamping plate 10 in a protruding manner, a disc spring 73 is disposed outside the guide post 71, the guide post 71 is inserted into the limiting groove 130, and the disc spring 73 is disposed in the mounting groove 13. The disc spring 73 can provide elastic force, and when the external temperature changes or rigid collision occurs in the installation and transportation process, the disc spring 73 plays a role in buffering, compensates the stress deformation of a sealing element in the galvanic pile, maintains the original galvanic pile pressing force, and avoids electrolyte leakage. And, the dish spring 73 cover is established on guide post 71 for the orientation that dish spring 73 cushioned keeps certain, makes the atress even. The guide posts 71 are inserted into the limiting grooves 130, so that the first clamping plate 10 can be conveniently, accurately and quickly installed.

Further, as shown in fig. 5 and 6, the outer peripheral surface of the second clamping plate 30 is provided with a limiting block 32 protruding towards the cell stack assembly 20, and the limiting block 32 is used for being clamped at the end of the cell stack assembly 20, so that the second clamping plate 30 is prevented from being displaced, and the stability of clamping plate installation is improved. The stopper 32 is provided with the fixing groove 31 at the projection of the connecting hole 11, that is, the second connecting portion 55 is connected in the fixing groove 31, because the fixing groove 31 is provided on the stopper 32, the stopper 32 has a relatively thick size, better structural strength and convenient connection stability.

Further, as shown in fig. 3 and 6, a through hole 33 is formed in the middle of the second clamping plate 30 for allowing the fuel of the battery to enter and exit. The fuel cell can be conveniently assembled after the assembly is finished, and the structure is prevented from being disassembled again.

Further, as shown in fig. 5 and 6, the cell stack assembly structure 100 further includes a second insulating plate 90, the second insulating plate 90 is disposed between the second clamping plate 30 and the cell stack assembly 20, a peripheral edge of the second insulating plate 90 is provided with an avoiding space 91, and the stopper 32 and the first connecting portion 53 are disposed in the avoiding space 91; that is, the avoiding space 91 can facilitate adjustment of the screw-joint position of the second connecting portion 55, which facilitates adjustment of the pressing force, and meanwhile, the stopper 32 is disposed in the avoiding space 91, which ensures the stability of connection between the second clamping plate 30 and the second insulating plate 90.

And/or, the connecting body 51 is flat and banded, the connecting body 51 is attached to the side surface of the cell stack assembly 20, the flat banded contact area is larger, and the stability of the side limit of the cell stack assembly 20 is better.

And/or the connecting body 51 is made of a rigid material, so that deformation is avoided, and the protection of the side edge of the cell stack assembly 20 is weakened;

and/or, the number of the connecting bodies 51 is ten, and the connecting bodies 51 are disposed on four sides of the cell stack assembly 20, although the number of the connecting bodies 51 may be greater or smaller, specifically selected according to the size of the cell stack assembly 20, so as to ensure the stability of the assembly.

Moreover, the two ends of the connecting body 51 are provided with connecting parts which are fixed on the clamping plates at the two ends through locking screws, so that the operation is convenient in the process of compressing the battery stack assembly 20; this connecting portion and connecting body 51 multiposition point contact are connected, promptly, both form great contact surface with connecting body 51 at connecting portion, so for connecting portion and connecting body 51 between be connected more firmly, intensity more strengthens, makes both difficult disconnection or separation, improves the stability that connecting piece 50 compressed tightly and the security that the battery pile used.

Further, connecting body 51 is rectangular shape structure, certain width has, so, the side of the wide face butt battery pile of connecting body 51, and form great area of contact with the side of battery pile, make the compact structure of battery pile more stable, and, because connecting body 51 is rectangular shape structure, then its thickness can not be too thick, so, when connecting body 51 and setting up each side at the battery pile, connecting body 51 can not bulge the side of battery pile too much, so, can not increase the size of battery pile because of connecting body 51's setting, the transportation and the application of the battery pile after convenient the equipment.

Moreover, due to the structural advantages of the connecting body 51, the battery electric pile does not need to be transported for many times in the assembling process, the binding belt component can be installed under the assembling environmental condition of the battery electric pile, the installation process is simplified, the working strength is reduced, multiple press fitting errors can be effectively avoided, the assembling time is saved, a large amount of manpower and material resources are saved, and the occupied area is effectively reduced.

Further, as shown in fig. 3 and 7, the first connection portion 53 includes a first connection column 531 and a first fastening bolt 533, the first connection column 531 is disposed at an end of the connection body 51 and is opened with a fixing hole, and the first fastening bolt 533 passes through the fixing hole of the first connection column 531 and the connection hole 11 and is screwed to the connection hole 11. The first fastening bolt 533 has a certain length, and the relative position where the first fastening bolt 533 is screwed to the first connecting column 531 can be adjusted to adjust the tightness of the compression, for example, the closer the tail of the screw of the first fastening bolt 533 is to the first connecting column 531, the tighter the compression joint assembly, it can be understood that an internal thread is provided in the connecting hole 11, and an internal thread is provided in the fixing hole of the first connecting column 531.

Further, as shown in fig. 5 and 7, the second connecting portion 55 includes a second connecting post 551 and a second fastening bolt 553, the second connecting post 551 is disposed at an end of the connecting body 51 away from the first connecting post 531 and is opened with a fixing hole, and the second fastening bolt 553 passes through the fixing hole of the second connecting post 551 and is screwed to the fixing groove 31. The tightness of the press-fit assembly is enhanced by adjusting the depth to which the second fastening bolt 553 is threadedly coupled to the fixing groove 31, and it can be understood that the inner wall of the fixing groove 31 is provided with an internal thread, and/or the fixing hole of the second connecting post 551 is internally provided with an internal thread.

The present application also provides a battery stack that is packaged using the assembly structure 100 of the battery stack as described above, that is, the battery stack assembly 20 is disposed between the first clamping plate 10 and the second clamping plate 30. Since the assembly structure 100 of the battery stack adopts all technical solutions of all the above embodiments, at least all the beneficial effects brought by the technical solutions of the above embodiments are achieved, and no further description is given here.

The above is only the preferred embodiment of the present invention, and the patent scope of the present invention is not limited thereby, all the equivalent structure changes made by the contents of the specification and the drawings are utilized under the inventive concept of the present invention, or the direct/indirect application in other related technical fields is included in the patent protection scope of the present invention.

Claims (10)

1. An assembly structure of a battery cell stack for assembling the battery cell stack, comprising:

the battery cell stack assembly comprises a first clamping plate (10), wherein the first clamping plate (10) is used for being mounted on one end face of a battery cell stack assembly (20), and a plurality of connecting holes (11) are formed in the periphery of the first clamping plate (10);

the second clamping plate (30) is used for being installed on one end face, away from the first clamping plate (10), of the cell stack assembly (20), and fixing grooves (31) are formed in the surface, facing the first clamping plate (10), of the second clamping plate (30); and

a plurality of connecting pieces (50), each connecting piece (50) including connecting body (51), and locate first connecting portion (53) and second connecting portion (55) at connecting body (51) both ends, connecting body (51) paste tightly the side of battery galvanic pile subassembly (20), first connecting portion (53) are fixed in connecting hole (11), second connecting portion (55) are fixed in fixed slot (31), with battery galvanic pile subassembly (20) compress tightly.

2. The assembly structure of battery cell stacks according to claim 1, wherein the first clamping plate (10) is formed with an escape groove (110) around the connection hole (11) to escape the first connection portion (53).

3. The assembly structure of a battery cell stack according to claim 2, wherein the first clamping plate (10) is provided with a mounting groove (13) toward the middle of the surface of the battery cell stack assembly (20), and the mounting groove (13) is used for placing a damping member therein.

4. The structure for assembling battery cell stacks according to claim 3, wherein a stopper groove (130) is formed at the bottom of the mounting groove (13), and a guide member formed at an end surface of the battery cell stack assembly (20) is received in the stopper groove (130).

5. The structure for assembling a battery stack according to claim 4, further comprising a first insulating plate (70), wherein the first insulating plate (70) is disposed between the first clamping plate (10) and the battery stack assembly (20), a guide post (71) is protruded from a surface of the first insulating plate (70) facing the first clamping plate (10), a disc spring (73) is sleeved outside the guide post (71), the guide post (71) is inserted into the limiting groove (130), and the disc spring (73) is disposed in the mounting groove (13).

6. The assembly structure of the battery stack according to claim 2, wherein a stopper (32) is convexly provided on the outer circumferential surface of the second clamping plate (30) toward the battery stack assembly (20), the stopper (32) is configured to be clamped at the end of the battery stack assembly (20), and the projection of the stopper (32) on the connection hole (11) is provided with the fixing groove (31).

7. The cell stack assembly structure according to claim 6, further comprising a second insulating plate (90), wherein the second insulating plate (90) is provided between the second clamping plate (30) and the cell stack assembly (20), a peripheral edge of the second insulating plate (90) is provided with an escape space (91), and the stopper (32) and the first connecting portion (53) are provided in the escape space (91);

and/or the connecting body (51) is in the shape of a flat strip;

and/or the connecting body (51) is made of rigid material;

and/or the number of the connecting bodies (51) is ten.

8. The assembly structure of battery cell stacks according to any one of claims 1 to 7, wherein the first connection portion (53) includes a first connection post (531) and a first fastening bolt (533), the first connection post (531) is provided at an end of the connection body (51) and is opened with a fixing hole, and the first fastening bolt (533) passes through the first connection post (531) and the connection hole (11) and is screwed to the connection hole (11).

9. The assembly structure of battery cell stack according to claim 8, wherein the second connection part (55) includes a second connection post (551) and a second fastening bolt (553), the second connection post (551) is provided at an end of the connection body (51) facing away from the first connection post (531) and is opened with a fixing hole, and the second fastening bolt (553) passes through the second connection post (551) and is screw-coupled to the fixing groove (31).

10. A battery cell stack, characterized in that it comprises an assembly structure of a battery cell stack according to any one of claims 1 to 9 and a battery cell stack assembly (20), said battery cell stack assembly (20) being provided between said first clamping plate (10) and said second clamping plate (30).

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