CN216671820U

CN216671820U - Battery end plate assembly and battery module

Info

Publication number: CN216671820U
Application number: CN202220209131.0U
Authority: CN
Inventors: 常祺轩
Original assignee: He'nan Penghui Power Supply Co ltd
Current assignee: He'nan Penghui Power Supply Co ltd
Priority date: 2022-01-24
Filing date: 2022-01-24
Publication date: 2022-06-03
Anticipated expiration: 2032-01-24

Abstract

The utility model provides a battery end plate assembly and a battery module, and relates to the technical field of battery modules, wherein the battery end plate assembly comprises two end plate main bodies, and at least two connecting steel bars are arranged between the two end plate main bodies; one the end plate main part is towards another the direction of end plate main part is first direction the both sides of the first direction of end plate main part are provided with at least one connection billet respectively. The end plate main body of the battery end plate assembly provided by the utility model is provided with the strip hole, the bolt penetrates through the strip hole and is screwed in the threaded hole, the distance between the two end plate main bodies is adjusted by adjusting different positions of the bolt on the strip hole, and the battery end plate assembly can be adjusted according to the actual thickness of a plurality of stacked battery cells, so that the firmness of fixing the plurality of battery cells is ensured, and the problem that the battery cells cannot be fixed or are too loose after being fixed due to the stacking of errors of the thicknesses of the battery cells is avoided.

Description

Battery end plate assembly and battery module

Technical Field

The utility model relates to the technical field of battery modules, in particular to a battery end plate assembly and a battery module.

Background

With the maturity of battery technology, battery modules are widely used, for example, in a power automobile, a battery management system and a thermal management system are added to the battery module to form a complete battery pack system, and the battery pack system is widely popular with consumers due to safety and high efficiency as a driving energy source of the power automobile.

Although battery technology has obtained a long-standing development in recent years, battery module still has following problem in practical application, when battery module is constituteed to electric core, need use fixed frame, through a plurality of electric core holding in fixed frame, so that each electric core can be fixed as an organic whole, and conventional electric core thickness is thin thick not to be uniform, the gross thickness after a plurality of electric cores are in groups also can be different, traditional fixed frame size is fixed, electric core too thick can't pack into fixed frame, electric core too thin pack into fixed frame can become flexible.

SUMMERY OF THE UTILITY MODEL

The utility model aims to provide a battery end plate assembly and a battery module, and aims to solve the technical problem that a plurality of battery cores are overlapped in error and a fixed steel belt cannot firmly fix the battery cores due to inaccurate battery core size of the conventional battery module.

In a first aspect, the present invention provides a battery end plate assembly comprising two end plate bodies between which at least two connection steel bars are arranged;

the direction of one end plate main body towards the other end plate main body is a first direction, and two sides of the first direction of the end plate main body are respectively provided with at least one connecting steel bar; the connecting steel bars are detachably connected with the end plate main body;

the surface of the end plate main body facing to the other end plate main body is a first side surface, the surface of the end plate main body far away from the other end plate main body is a second side surface, and a third side surface is arranged between the first side surface and the second side surface of the end plate main body;

one end or both ends of the connection steel bar are provided with orientation the rectangular hole of third side be provided with on the third side with the screw hole, the connection steel bar passes behind the rectangular hole through the bolt spiro union be in on the screw hole, make the connection steel bar with the end plate main part is connected.

In an optional embodiment, a cavity is arranged in the end plate main body, a through hole communicated with the containing cavity is arranged on the end plate main body, and a nut riveted at the through hole is arranged in the containing cavity; the nut and the through hole are matched to form the threaded hole.

In an alternative embodiment, the connection steel bar includes a bar body and an insulation sleeve that is fitted over the bar body.

In an alternative embodiment, four connection steel bars are disposed between the end plate bodies, and two connection steel bars are disposed at both sides of the first direction of the end plate bodies, respectively.

In an alternative embodiment, the elongated hole is exposed outside the insulating sleeve.

In an alternative embodiment, the end plate main body comprises a fixed plate, two columns are arranged on the fixed plate, and a reinforcing rib arranged perpendicular to the columns is arranged between the two columns;

the through holes are formed in the upright posts, and the through holes are formed in the extending direction of the reinforcing ribs.

In an alternative embodiment, the cavity is provided in the pillar, and a support plate is provided in the cavity.

In an alternative embodiment, the upper end of the upright post is provided with a fixing hole communicated with the cavity.

The end plate main body of the battery end plate assembly provided by the utility model is provided with the strip hole, the bolt penetrates through the strip hole and is screwed in the threaded hole, the distance between the two end plate main bodies is adjusted by adjusting different positions of the bolt on the strip hole, and the battery end plate assembly can be adjusted according to the actual thickness of a plurality of stacked battery cells, so that the firmness of fixing the plurality of battery cells is ensured, and the problem that the battery cells cannot be fixed or are too loose after being fixed due to the stacking of errors of the thicknesses of the battery cells is avoided.

In a second aspect, the present invention provides a battery module including the battery end plate assembly according to any one of the preceding embodiments.

In an optional embodiment, a plurality of battery cells are arranged between two end plate main bodies, and an insulating sheet is arranged between adjacent battery cells.

The utility model also provides a battery module, which adopts the battery end plate assembly, thereby having all the beneficial effects of the battery end plate assembly.

Drawings

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

Fig. 1 is a schematic structural view of a battery end plate assembly according to an embodiment of the present invention;

FIG. 2 is a top view of the battery end plate assembly shown in FIG. 1;

FIG. 3 is a schematic cross-sectional view A-A of the battery end plate assembly shown in FIG. 2;

fig. 4 is a partially enlarged view of B of the cell end plate assembly shown in fig. 3;

fig. 5 is a structural view of a connection steel bar of the battery end plate assembly shown in fig. 1;

fig. 6 is a schematic view showing the structure of the connection steel bars and bolts of the battery end plate assembly shown in fig. 1;

fig. 7 is a schematic structural diagram of a battery module according to an embodiment of the utility model.

Icon: 100-electric core; 200-an insulating sheet; 300-an end plate body; 301-a first side; 302-third side; 303-a second side; 400-a connecting steel bar; 401-an insulating sleeve; 402-a steel strip body; 500-reinforcing ribs; 600-a column; 700-a chamber; 800-a support plate; 900-bolt; 110-a nut; 120-elongated holes; 130-fixing holes.

Detailed Description

The technical solutions of the present invention will be described clearly and completely with reference to the following embodiments, and it should be understood that the described embodiments are some, but not all, embodiments of the present invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

Examples

Referring to fig. 1 to 6, the present invention provides a battery end plate assembly including two end plate bodies 300, between which two end plate bodies 300 at least two connection steel bars 400 are disposed;

a direction of one of the end plate bodies 300 toward the other end plate body 300 is a first direction, and at least one connection steel bar 400 is respectively disposed at both sides of the first direction of the end plate body 300; and the connection steel bars 400 are detachably connected with the end plate body 300;

the surface of the end plate main body 300 facing the other end plate main body 300 is a first side surface 301, the surface of the end plate main body 300 far away from the other end plate main body 300 is a second side surface 303, and a third side surface 302 is arranged between the first side surface 301 and the second side surface 303 of the end plate main body 300;

one end or both ends of the connection steel rod 400 are provided with a long hole 120 facing the third side surface 302, a threaded hole is provided on the third side surface 302, and the connection steel rod 400 passes through the long hole 120 through a bolt 900 and then is screwed into the threaded hole, so that the connection steel rod 400 is connected to the end plate body 300.

In some embodiments, the battery end plate assembly includes two end plate bodies 300, a plurality of battery cells 100 are disposed between the two end plate bodies 300, and a connection steel rod 400 is disposed between the two end plate bodies 300; after the error stack of the thickness of a plurality of electric cores 100, through adjusting bolt 900 in the position that rectangular hole 120 is different, realize adjusting the regulation of the distance between two end plate main parts 300, and then can hold the error of a plurality of electric cores 100 thickness, realize the fixed to a plurality of electric cores 100, avoid because the stack of the error of electric core 100 thickness, appear unable fixed or fixed back too loose problem.

A direction of one end plate body 300 toward the other end plate body 300 is a first direction, a length direction of the connection steel rod 400 is the same as the first direction, a long hole 120 is provided at one end or both ends of the connection steel rod 400, and when the long holes 120 are provided at both ends of the connection steel rod 400, a large adjustment range is provided; when the thickness error of the battery cell 100 is small, only one strip hole 120 may be disposed on the connection steel bar 400; according to the actual requirement, a long strip hole 120 with a long length is arranged on the connection steel bar 400, or two long strip holes 120 with a short length are arranged, so that the problem that the thickness is increased or decreased due to error superposition of a plurality of battery cells 100 is solved.

Set up the screw hole on the third side 302 of end plate main part 300, the orientation of this screw hole is perpendicular with the length direction of connecting the billet 400, and bolt 900 passes rectangular hole 120 on the connecting billet 400 and can screw in the screw hole, and then realizes being connected of connecting billet 400 and end plate main part 300, and removes at the length direction in rectangular hole 120 through bolt 900, adjusts the distance between two end plate main parts 300, and then realizes the fixed to a plurality of electric cores 100.

Referring to fig. 3 and 4, in an alternative embodiment, a cavity is formed in the end plate main body 300, a through hole communicating with the cavity 700 is formed in the end plate main body 300, and a nut 110 riveted at the through hole is formed in the cavity 700; the nut 110 cooperates with the through hole to form the threaded hole.

A cavity is arranged on the end plate main body 300, a through hole communicated with the containing cavity 700 is arranged on the end plate main body 300, and the nut 110 is arranged on the through hole; the nut 110 is generally fixed to the through-hole by riveting so that the nut 110 and the through-hole are engaged to form a screw hole, and the bolt 900 is inserted into the through-hole and then screwed to the nut 110, thereby connecting the connection steel rod 400 to the end plate body 300.

In an alternative embodiment, the connection steel strip 400 comprises a strip body 402 and an insulating sleeve 401, the insulating sleeve 401 being fitted over the strip body 402.

The steel bar main body 402 generally adopts Q235 high strength to just, and insulating sleeve 401's material is PVC or PET material, and insulating sleeve 401 cover is established on steel bar main body 402, avoids steel bar main body 402 direct and electric core 100 contact like this, avoids taking place the short circuit between steel bar main body 402 and the electric core 100.

Referring to fig. 1, in an alternative embodiment, four connection steel bars 400 are provided between the end plate bodies 300, and two connection steel bars 400 are provided at both sides of the end plate body 300 in the first direction, respectively.

In an alternative embodiment, the elongated hole 120 is exposed outside the insulating sleeve 401.

In order to enable the end plate body 300 to firmly fix the battery cells 100, four connection steel bars 400 are generally disposed between the end plate bodies 300, two screw holes are respectively disposed on two third sides 302 of the end plate bodies 300, and each third side 302 is connected to two connection steel bars 400.

In an alternative embodiment, the end plate body 300 includes a fixing plate, two columns 600 are disposed on the fixing plate, and a reinforcing rib 500 disposed perpendicular to the columns 600 is disposed between the two columns 600;

the through-holes are provided on the pillar 600, and the through-holes are provided in the extending direction of the reinforcing rib 500.

In an alternative embodiment, the cavity 700 is disposed in the pillar 600, and a supporting plate 800 is disposed in the cavity 700.

In an alternative embodiment, the upper end of the upright 600 is provided with a fixing hole 130 communicated with the cavity 700.

In order to firmly fix the battery module at a certain position, a fixing hole 130 communicated with the receiving cavity 700 is formed in the pillar 600, and a screw rod penetrates through the fixing hole 130 at the upper end of the end plate main body 300 and penetrates out from the lower end of the end plate main body 300 along the receiving cavity 700, so that the position of the end plate main body 300 is fixed by the screw rod, and the battery module is fixed; and the supporting plate 800 provided in the cavity 700 can play a role of supporting the pillar 600, and the force of the screw of the pillar 600 is avoided, so that the pillar 600 deforms.

The end plate main body 300 of the battery end plate assembly provided by the utility model is provided with the strip hole 120, the bolt 900 penetrates through the strip hole 120 and is screwed in the threaded hole, the distance between the two end plate main bodies 300 is adjusted by adjusting different positions of the bolt 900 on the strip hole 120, and then the battery end plate assembly can be adjusted according to the actual thickness of a plurality of battery cells 100 after being stacked, so that the firmness of fixing the plurality of battery cells 100 is ensured, and the problem that the battery cells 100 cannot be fixed or are too loose after being fixed due to the stacking of errors of the thicknesses of the battery cells 100 is avoided.

Referring to fig. 7, the present invention provides a battery module including the battery end plate assembly according to any one of the previous embodiments.

In an alternative embodiment, a plurality of battery cells 100 are disposed between two end plate main bodies 300, and an insulating sheet 200 is disposed between adjacent battery cells 100.

Finally, it should be noted that: the above embodiments are only used to illustrate the technical solution of the present invention, and not to limit the same; while the utility model has been described in detail and with reference to the foregoing embodiments, it will be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some or all of the technical features may be equivalently replaced; and the modifications or the substitutions do not make the essence of the corresponding technical solutions depart from the scope of the technical solutions of the embodiments of the present invention.

Claims

1. A battery end plate assembly, comprising two end plate bodies (300), at least two connection steel bars (400) being provided between the two end plate bodies (300);

the direction of one end plate main body (300) towards the other end plate main body (300) is a first direction, and at least one connecting steel bar (400) is respectively arranged on two sides of the first direction of the end plate main body (300); and the connection steel bar (400) is detachably connected with the end plate main body (300);

the surface of the end plate main body (300) facing to the other end plate main body (300) is a first side surface (301), the surface of the end plate main body (300) far away from the other end plate main body (300) is a second side surface (303), and a third side surface (302) is arranged between the first side surface (301) and the second side surface (303) of the end plate main body (300);

one end or both ends of connecting billet (400) are provided with orientation rectangular hole (120) of third side (302) be provided with on third side (302) with the screw hole, connecting billet (400) pass rectangular hole (120) back spiro union through bolt (900) on the screw hole, make connecting billet (400) with end plate main part (300) are connected.

2. The battery end plate assembly according to claim 1, wherein a cavity is formed in the end plate main body (300), a through hole communicated with the cavity (700) is formed in the end plate main body (300), and a nut (110) riveted at the through hole is formed in the cavity (700); the nut (110) cooperates with the through hole to form the threaded hole.

3. The battery end plate assembly of claim 2, wherein the connection steel bar (400) comprises a bar body (402) and an insulating sleeve (401), the insulating sleeve (401) being fitted over the bar body (402).

4. The battery end plate assembly according to claim 3, wherein four connection steel bars (400) are provided between the end plate bodies (300), and two connection steel bars (400) are provided at both sides of the first direction of the end plate bodies (300), respectively.

5. The battery end plate assembly of claim 4, wherein the elongated hole (120) is exposed outside the insulating sleeve (401).

6. The battery end plate assembly according to claim 2, wherein the end plate body (300) comprises a fixing plate on which two pillars (600) are disposed, and a reinforcing rib (500) disposed perpendicular to the pillars (600) is disposed between the two pillars (600);

the through-hole is provided on the pillar (600), and the through-hole is provided in the extending direction of the reinforcing rib (500).

7. The battery end plate assembly of claim 6, wherein the pocket (700) is disposed within the post (600), and a support plate (800) is disposed within the pocket (700).

8. The battery end plate assembly according to claim 7, wherein the upper end of the upright (600) is provided with a fixing hole (130) communicating with the receiving cavity (700).

9. A battery module comprising the battery end plate assembly of any one of claims 1-8.

10. The battery module according to claim 9, wherein a plurality of battery cells (100) are disposed between two of the end plate main bodies (300), and an insulating sheet (200) is disposed between adjacent battery cells (100).