CN213782170U

CN213782170U - Novel square battery module

Info

Publication number: CN213782170U
Application number: CN202022969519.4U
Authority: CN
Inventors: 杨强; 张万财; 王欢; 郭敏
Original assignee: Xiamen Haichen New Energy Technology Co Ltd
Current assignee: Xiamen Hithium Energy Storage Technology Co Ltd
Priority date: 2020-12-10
Filing date: 2020-12-10
Publication date: 2021-07-23
Anticipated expiration: 2030-12-10

Abstract

The utility model provides a novel square battery module, which comprises a battery cell, two side plates and an end plate, wherein the two side plates are provided with hems, and two ends of the two side plates are provided with bending connecting parts; the end surfaces of the two end plates are respectively provided with a clamping groove matched with the bending connecting part, the two side plates are fixedly connected with the two end plates in a clamping connection mode of the bending connecting part and the clamping groove, and a fixing box for containing a battery cell is formed after the two side plates are connected with the end plates; be provided with a buffer board in the fixed box, the buffer board is connected with two curb plates, and the buffer board falls into two cavitys with the fixed box, and battery electricity core sets up respectively in two cavitys. Two curb plates form a fixed box that is used for fixed battery electricity core through the mode that connecting portion and draw-in groove block are connected of bending and two end plate fixed connection backs, have replaced using bolted connection's among the prior art mode, and the structure of the battery module that is compacter increases the suitability of module battery, improves the range of application.

Description

Novel square battery module

Technical Field

The utility model relates to a battery integrates technical field, concretely relates to novel square battery module.

Background

With the rapid development of battery technology in China, aiming at some special fields such as electric vehicles and new energy automobile roof fields, a single battery often cannot meet the requirements of high-power electric equipment, and if the battery needs to be highly modularized, the battery is convenient to replace, assemble and use. However, in the modular battery in the prior art, the cell poles are all designed upward, the bus bar leads out total positive and total negative, the bus bar is usually connected with the battery cells by bolts, and due to the existence of fasteners such as bolts and nuts, the connection mode usually occupies a large space size (usually 10mm to 20mm higher than the height of the battery case), so that the volume of the battery module is increased, the volumetric specific energy density is reduced, the weight of the battery module is increased, and the gravimetric specific energy density is reduced.

SUMMERY OF THE UTILITY MODEL

The utility model provides a novel square battery module has solved the not high and low problem of energy density of current module battery integration rate.

In order to solve the technical problem, the utility model provides a following technical scheme: the novel square battery module comprises a battery cell, two side plates and an end plate, wherein the two side plates are provided with folded edges, and two ends of the two side plates are provided with bending connecting parts; the end surfaces of the two end plates are respectively provided with a clamping groove matched with the bending connecting part, the two side plates are fixedly connected with the two end plates in a clamping connection mode of the bending connecting part and the clamping groove, and a fixing box for containing a battery cell is formed after the two side plates are connected with the end plates; be provided with a buffer board in the fixed box, the buffer board is connected with two curb plates, and the buffer board falls into two cavitys with the fixed box, and battery electricity core sets up respectively in two cavitys. Two curb plates are through bending the mode that connecting portion and draw-in groove block are connected and two end plate fixed connection backs, form a fixed box that is used for fixed battery electricity core, replaced using bolted connection's among the prior art mode, the structure of battery module be compacter, increase the suitability of module battery, improve the range of application, and the battery electricity core in the fixed box can be in the stack of multilayer in vertical direction, can improve battery electricity core's efficiency in groups, increase the energy density of module battery.

Furthermore, in order to insulate the battery cell from the end plates and avoid electric leakage, an insulating plate is arranged between the battery cell and the two end plates, one end face of the battery cell is in contact with the inner surface of the insulating plate, the other end face of the battery cell is in contact with the surface of the buffer plate, two connecting sheets which are respectively connected with the battery cell are arranged on the insulating plate, the connecting sheets are L-shaped, one end of each connecting sheet is positioned on the insulating plate and connected with the battery cell, and the other end of each connecting sheet penetrates through the insulating plate and is positioned on the outer end faces of the end plates; the connecting pieces in the L shapes are respectively fixedly connected with the positive electrode and the negative electrode of the battery cell in the fixing box, and the connecting pieces are equivalent to extension pieces of the positive electrode and the negative electrode of the battery cell, so that electric equipment is convenient to connect, and the assembly and the replacement of the module battery are convenient.

Furthermore, grooves matched with the connecting pieces are formed in the tops of the two end plates, and one end, located outside the fixed box, of each connecting piece is arranged in the corresponding groove; the connecting pieces are fixedly arranged in the grooves, so that the manufacturing standards are convenient to unify, and the problem that the connecting pieces are not matched with the electric equipment due to displacement of the connecting pieces is avoided for fixing the positions of the connecting pieces.

Furthermore, the outer surfaces of the two insulation plates are respectively provided with an insulation cover, one end face of each insulation cover is in contact with the outer surface of each insulation plate, and the other end face of each insulation cover is in close contact with the inner surface of each end plate. The insulating cover not only can be with insulating isolation between connection piece and the end plate, prevent that the connection piece from hindering the people's phenomenon with the leading-in end plate of electric current on, avoid appearing the electric leakage, can prevent dust moreover, reduce external dust and get into battery electricity core from the end plate gap, open dustproof effect.

Further, a plurality of through grooves are formed in the end plate. The setting in a plurality of logical grooves for the inside hollow out construction that forms of end plate not only can alleviate the weight of end plate, improves the weight ratio energy density of battery module, and the outside air can circulate in the end plate is inside moreover, and the end plate heat dissipation of being convenient for improves the safety in utilization of battery module.

Furthermore, in order to ensure that the connecting sheet is firmly connected with the positive and negative poles of the battery cell, the connecting sheet is prevented from falling off from the poles of the battery cell when the battery module is used, and the connecting sheet is connected with the battery cell in a welding manner.

Furthermore, the two side plates and the end plates are made of metal, and after the bent connecting parts on the two side plates are clamped with the clamping grooves on the end plates, the two side plates and the two end plates are fixed in a cladding welding mode.

Compared with the prior art, the utility model, have following advantage: mode and two end plate fixed connection backs that two blocks of curb plates are connected through bending connecting portion and draw-in groove block in this scheme, form a fixed box that is used for fixed battery electricity core, replaced using bolted connection's among the prior art mode, the structure of battery module be compacter, increase the suitability of module battery, improve the range of application, and the battery electricity core in the fixed box can be in the stack of multilayer on vertical direction, can improve battery electricity core's efficiency in groups, increase the energy density of module battery.

Drawings

The accompanying drawings, which are included to provide a further understanding of the embodiments of the invention and are incorporated in and constitute a part of this application, illustrate embodiment(s) of the invention and together with the description serve to explain the principles of the invention. In the drawings:

fig. 1 is a schematic structural view of a novel prismatic battery module.

Fig. 2 is a schematic structural diagram of fig. 1 with a battery cell removed.

Reference numbers and corresponding part names in the drawings:

1. a battery cell; 2. a side plate; 3. an end plate; 4. folding edges; 5. bending the connecting part; 6. a card slot; 7. a fixing box; 8. a buffer plate; 9. a cavity; 10. an insulating plate; 11. connecting sheets; 12. a groove; 13. an insulating cover; 14. a through groove.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is described in detail with reference to the following embodiments, and the exemplary embodiments and descriptions thereof are only used for explaining the present invention and are not intended as limitations of the present invention.

Example 1

As shown in fig. 1-2, the utility model provides a novel square battery module, which comprises a battery cell 1, two side plates 2 and an end plate 3, wherein the two side plates 2 are provided with a folded edge 4, and two ends of the two side plates 2 are provided with bending connecting parts 5; the end faces of the two end plates 3 are respectively provided with a clamping groove 6 matched with the bending connecting part 5, the two side plates 2 are fixedly connected with the two end plates 3 in a manner of clamping connection of the bending connecting part 5 and the clamping groove 6, and the two side plates 2 and the end plates 3 are connected to form a fixing box 7 for containing the battery cell 1; be provided with a buffer board 8 in the fixed box 7, buffer board 8 is connected with two curb plates 2, and buffer board 8 falls into two cavities 9 with fixed box 7, and battery electricity core 1 sets up respectively in two cavities 9. Two curb plates 2 are through bending connecting portion 5 and behind 6 block connections of draw-in groove and two end plate 3 fixed connection, form a fixed box 7 that is used for fixed battery electricity core 1, the mode of using bolted connection among the prior art has been replaced, the structure of battery module be compacter, increase the suitability of module battery, improve the range of application, and battery electricity core 1 in the fixed box 7 can be in the multilayer stack of longitudinal direction, can improve battery electricity core 1's efficiency in groups, increase the energy density of module battery. The two side plates 2 and the end plate 3 are made of metal, and after the bent connecting parts on the two side plates 2 are clamped with the clamping grooves 6 on the end plate 3, the two side plates 2 and the two end plates 3 are fixed by cladding welding.

The inside a plurality of logical grooves 14 that are provided with of end plate 3, a plurality of settings that lead to groove 14 for the inside hollow out construction that forms of end plate 3 not only can alleviate the weight of end plate 3, improves the weight ratio energy density of battery module, and the outside air can circulate in end plate 3 is inside moreover, and the heat dissipation of the end plate 3 of being convenient for improves the safety in utilization of battery module.

An insulating plate 10 is arranged between the battery cell 1 and the two end plates 3, one end face of the battery cell 1 is in contact with the inner surface of the insulating plate 10, the other end face of the battery cell 1 is in contact with the surface of the buffer plate 8, two connecting sheets 11 respectively connected with the battery cell 1 are arranged on the insulating plate 10, each connecting sheet 11 is L-shaped, one end of each connecting sheet 11 is located on the insulating plate 10 and connected with the battery cell 1, and the other end of each connecting sheet passes through the insulating plate 10 and is located on the outer end face of each end plate 3; the connecting pieces 11 in the L shapes are respectively fixedly connected with the positive electrode and the negative electrode of the battery cell 1 in the fixing box 7, and the connecting pieces 11 are equivalent to extension pieces of the positive electrode and the negative electrode of the battery cell 1, so that electric equipment is convenient to connect, and the assembly and the replacement of the module battery are convenient. The insulation board 10 insulates and isolates the battery cell 1 from the end plate 3, thereby avoiding the occurrence of electric leakage. Connection piece 11 drops with 1 utmost point post of battery electricity core, and a plurality of connection pieces 11 and 1 the connected mode of battery electricity core are the welding, ensure connection piece 11 and 1 positive and negative utmost point posts of battery electricity core firm in connection, avoid when using the battery module, connection piece 11 drops with 1 utmost point post of battery electricity core.

The tops of the two end plates 3 are provided with grooves 12 matched with the connecting sheets 11, and one ends of the connecting sheets 11, which are positioned outside the fixed box 7, are arranged in the grooves 12; with connecting piece 11 fixed set up in recess 12, convenient unified preparation standard also for fixed connection piece 11's position, avoid appearing causing the unmatched problem with the consumer because of connecting piece 11 displacement.

The outer surfaces of the two insulating plates 10 are respectively provided with an insulating cover 13, one end surface of each insulating cover 13 is in contact with the outer surface of the insulating plate 10, and the other end surface of each insulating cover 13 is in close contact with the inner surface of the end plate 3. Insulating cover 13 not only can be with insulating isolation between connection piece 11 and the end plate 3, prevent that connection piece 11 from hindering the people's phenomenon with the leading-in end plate 3 of electric current on, avoid appearing the electric leakage, can prevent dust moreover, reduce external dust and get into battery electricity core 1 from the end plate 3 gap, open dustproof effect.

The above embodiments, further detailed description of the objects, technical solutions and advantages of the present invention, it should be understood that the above embodiments are only specific embodiments of the present invention, and are not intended to limit the scope of the present invention, and any modifications, equivalent substitutions, improvements, etc. made within the spirit and principle of the present invention should be included in the scope of the present invention.

Claims

1. A novel square battery module comprises a battery cell (1) and is characterized by further comprising two side plates (2) and an end plate (3), wherein the two side plates (2) are provided with folded edges (4), and two ends of each side plate (2) are provided with bending connecting parts (5); the end faces of the two end plates (3) are respectively provided with a clamping groove (6) matched with the bending connecting part (5), the two side plates (2) are fixedly connected with the two end plates (3) in a clamping connection mode of the bending connecting part (5) and the clamping grooves (6), and a fixing box (7) used for containing the battery cell (1) is formed after the two side plates (2) and the end plates (3) are connected;

be provided with a buffer board (8) in fixed box (7), buffer board (8) are connected with two curb plates (2), and buffer board (8) divide into two cavities (9) with fixed box (7), and battery electricity core (1) sets up respectively in two in cavity (9).

2. The novel square battery module according to claim 1, wherein an insulating plate (10) is arranged between the battery cell (1) and the two end plates (3), one end face of the battery cell (1) is in surface contact with the insulating plate (10), the other end face of the battery cell is in surface contact with the buffer plate (8), two connecting pieces (11) connected with the battery cell (1) are arranged on the insulating plate (10), the connecting pieces (11) are L-shaped, one end of each connecting piece (11) is located on the insulating plate (10) and connected with the battery cell (1), and the other end of each connecting piece passes through the insulating plate (10) and is located on the outer end face of the end plate (3).

3. The novel square battery module according to claim 2, wherein the top of the two end plates (3) is provided with a groove (12) matched with the connecting piece (11), and one end of the connecting piece (11) positioned outside the fixing box (7) is arranged in the groove (12).

4. The novel prismatic battery module according to claim 3, wherein an insulating cover (13) is provided on the outer surface of each of the two insulating plates (10), one end surface of the insulating cover (13) is in contact with the outer surface of the insulating plate (10), and the other end surface is in close contact with the inner surface of the end plate (3).

5. The novel prismatic battery module according to claim 4, wherein a plurality of through grooves (14) are provided inside the end plate (3).

6. The novel square battery module according to claim 5, wherein the connection manner of the connecting pieces (11) and the battery cell (1) is welding.

7. The novel square battery module according to any one of claims 1 to 6, wherein the two side plates (2) and the two end plates (3) are made of metal, and after the bent connecting parts on the two side plates (2) are clamped with the clamping grooves (6) on the end plates (3), the two side plates (2) and the two end plates (3) are fixed by cladding welding.