CN210110896U

CN210110896U - Battery module end plate that combines is moulded to steel

Info

Publication number: CN210110896U
Application number: CN201921433412.9U
Authority: CN
Inventors: 张子安; 马姜浩; 杨秋立; 王佳; 张鹏; 周游
Original assignee: Dongguan Tafel New Energy Technology Co Ltd; Jiangsu Tafel New Energy Technology Co Ltd; Shenzhen Tafel New Energy Technology Co Ltd
Current assignee: Jiangsu Zenio New Energy Battery Technologies Co Ltd
Priority date: 2019-08-30
Filing date: 2019-08-30
Publication date: 2020-02-21
Anticipated expiration: 2029-08-30

Abstract

The utility model discloses a battery module end plate that combination is moulded to steel, including end plate main part and two blocks of curb plate welded connection boards. The end plate main body is a plate-shaped body made of plastics, and two sides of the inner side surface are respectively provided with a vertical steel plate groove. And a vertical clamping plate groove is formed in the steel plate groove. The side plate welding connection plate is a plate-shaped body made of stainless steel. The lateral surface of the lateral plate welding connection plate is provided with a clamping plate strip, and the medial surface is provided with a welding groove. The shape and size of the side plate welding connection plate are matched with the steel plate groove, and the shape and size of the clamping plate strip are matched with the clamping plate groove, so that the side plate welding connection plate is clamped in the steel plate groove through the clamping of the clamping plate strip and the clamping plate groove. And the welding grooves on the two side plate welding connecting plates are respectively positioned on two sides of the inner side surface of the battery module end plate. The utility model discloses replace the aluminum alloy ex-trusions with the structure of steel-plastic combination, alleviateed end plate weight, reduced welding process's complexity to improve the yield.

Description

Battery module end plate that combines is moulded to steel

Technical Field

The utility model relates to a square battery's battery module assembly.

Background

In the field of electric energy storage, batteries are the smallest energy storage units. The cells are generally square. The battery modules are formed by the plurality of batteries, then the battery modules form the module group, and finally the battery energy storage module is formed by the plurality of module groups. When the batteries constitute the battery module, the batteries of the battery module need to be fixed to each other. The mutual fixation of each battery of the battery module requires two end plates and two side plates. In the prior art, the two end plates and the two side plates are usually made of extruded aluminum alloy sections or die-cast aluminum alloy sections. The two end plates and the two side plates are welded together through a welding process between the end plates and the side plates, so that the port-shaped frame is formed. The battery is positioned in a port-shaped frame formed by welding end plate side plates. The assembly process of the battery module has two defects: firstly, the aluminum alloy section has large mass and heavy weight; and secondly, the welding between the end plate side plates is the welding between the aluminum alloy sections, and the welding between the aluminum alloy sections cannot be directly operated in an open air environment, so that the welding process is complex and the cost rate is low.

Disclosure of Invention

The utility model discloses the problem that will solve: under the prior art, there are two defects in the assembly process of battery module: firstly, the aluminum alloy section has large mass and heavy weight; and secondly, the welding between the end plate side plates is complex in welding process between aluminum alloy profiles and low in cost rate.

In order to solve the above problem, the utility model discloses a scheme as follows:

a steel-plastic combined battery module end plate comprises an end plate main body and two side plate welding connecting plates; the end plate main body is a plate-shaped body made of plastics, and two sides of the inner side surface are respectively provided with a vertical steel plate groove; a vertical clamping plate groove is formed in the steel plate groove; the side plate welding connection plate is a plate-shaped body made of stainless steel; the outer side surface of the side plate welding connection plate is provided with a clamping plate strip, and the inner side surface of the side plate welding connection plate is provided with a welding groove; the shape and size of the side plate welding connection plate are matched with those of the steel plate groove, and the shape and size of the clamping plate strip are matched with those of the clamping plate groove, so that the side plate welding connection plate is clamped in the steel plate groove through the clamping of the clamping plate strip and the clamping plate groove; and the welding grooves on the two side plate welding connecting plates are respectively positioned on two sides of the inner side surface of the battery module end plate.

Further, vertical mounting holes are formed in two sides of the end plate main body.

Further, the top of the end plate main body is provided with an output pole support frame.

Further, the inner side surface of the end plate main body is provided with a weight reduction cavity.

Further, the end plate main body is made of PSU plastic.

The technical effects of the utility model are as follows:

1. the end plate main body is made of plastic with weight reduction grooves, so that the weight of the end plate is greatly reduced.

2. The material for preparing the end plate main body is PSU plastic, so that the strength and hardness are high, and the stress requirement of the end plate is met.

3. Set up module output pole support frame in the end plate main part for module output pole support frame is integrated with the end plate integration, thereby solves the tolerance problem that exists when module assembly output pole support frame, and reduces module assembly process complexity.

4. And a welding groove is formed in the side plate welding connection plate, so that welding operation is facilitated.

5. The side plate welding connecting plate is made of stainless steel materials, the matched side plates are made of stainless steel materials, so that welding between the end plates and the side plates is performed between the stainless steel materials, and compared with aluminum alloy section welding, the stainless steel welding process is simpler, mature and high in product rate.

6. The plastic for preparing the end plate main body is insulated, so that an insulating plate does not need to be additionally arranged between the end plate and the battery, the complexity of the module assembly process is reduced, and the insulating property of the end plate is improved.

Drawings

Fig. 1 is a schematic view of the overall structure of the embodiment of the present invention.

Fig. 2 is a perspective view of the end plate body of fig. 1.

Fig. 3 is a schematic top view of the endplate body of fig. 2.

Fig. 4 is a schematic perspective view of the side plate welding connection plate in fig. 1.

Wherein, 1 is an end plate main body, 11 is a steel plate groove, 12 is a clamping plate groove, 13 is a mounting hole, 14 is an output electrode support frame, and 15 is a weight-reducing cavity; 2 is a side plate welding connecting plate, 21 is a clamping plate strip and 22 is a welding groove.

Detailed Description

The present invention will be described in further detail with reference to the accompanying drawings.

As shown in fig. 1, 2, 3 and 4, the end plate of the battery module with combined steel and plastic comprises an end plate main body 1 and two side plate welding connecting plates 2. The end plate body 1 is a plate-like body made of plastic. Specifically, the endplate body 1 is a plate-like body integrally cast from plastic, and the plastic material is preferably PSU plastic, that is, polysulfone plastic. The two sides of the inner side surface of the end plate main body 1 are respectively provided with a vertical steel plate groove 11, and the middle of the inner side surface is provided with a weight reducing cavity 15. The two sides of the end plate main body 1 are provided with vertical mounting holes 13, and the top is provided with an output pole support frame 14. The mounting holes 13 are used for fixing the end plates on the module base through bolts, the mounting holes 13 can be through holes or threaded holes, and the bolts penetrate through the mounting holes when the end plates are mounted. The output electrode support frame 14 is used to mount the positive electrode or the negative electrode of the battery module. A vertical clamping plate groove 12 is arranged in the steel plate groove 11. The side plate welding connection plate 2 is a plate-like body made of stainless steel. The lateral plate welding connection plate 2 is provided with a clamping plate strip 21 on the outer side and a welding groove 22 on the inner side. The shape and size of the side plate welding connection plate 2 are matched with the steel plate groove 11, the shape and size of the clamping plate strip 21 are matched with the clamping plate groove 12, and therefore the side plate welding connection plate 2 is clamped in the steel plate groove 11 through clamping between the clamping plate strip 21 and the clamping plate groove 12. The welding grooves 22 on the two side plate welding connection plates 2 are respectively positioned on two sides of the inner side surface of the end plate of the battery module. The welding groove 22 is used for positioning with the side plate during welding. The depth of the welding groove 22 is 0.3 mm-0.8 mm, and the width is 8-15 mm.

In this embodiment, the clamping plate groove 12 is a strip-shaped groove with a trapezoidal cross section, the bottom of the strip-shaped groove is wider than the opening at the top, and the side plate welding connection plate 2 is inserted into the steel plate groove 11 in the vertical direction when being clamped into the steel plate groove 11. Those skilled in the art will appreciate that other shapes for the chuck slot 12 are possible. In addition, in the present embodiment, only one card slot 12 is provided, and those skilled in the art understand that a plurality of card slots 12 may be provided, for example, two or three, and correspondingly, two or three card strips 21 on the side plate welding connection plate 2 are also required.

In the present embodiment, the weight-reducing cavities 15 are transverse slots, and the weight-reducing cavities 15 are used for reducing weight of the end plate with sufficient physical strength, and those skilled in the art will appreciate that the weight-reducing cavities 15 may also adopt other shapes of structures.

Furthermore, as understood by those skilled in the art, after the end plate and the side plate are welded, the high temperature at the time of welding causes a natural adhesion between the side plate welding connection plate 2 and the end plate main body 1.

Claims

1. A steel-plastic combined battery module end plate is characterized by comprising an end plate main body (1) and two side plate welding connecting plates (2); the end plate main body (1) is a plate-shaped body made of plastics, and two sides of the inner side surface are respectively provided with a vertical steel plate groove (11); a vertical clamping plate groove (12) is arranged in the steel plate groove (11); the side plate welding connection plate (2) is a plate-shaped body made of stainless steel; the outer side surface of the side plate welding connecting plate (2) is provided with a clamping plate strip (21), and the inner side surface is provided with a welding groove (22); the shape and size of the side plate welding connection plate (2) are matched with the steel plate groove (11), and the shape and size of the clamping plate strip (21) are matched with the clamping plate groove (12), so that the side plate welding connection plate (2) is clamped in the steel plate groove (11) through the clamping of the clamping plate strip (21) and the clamping plate groove (12); and the welding grooves (22) on the two side plate welding connecting plates (2) are respectively positioned on two sides of the inner side surface of the end plate of the battery module.

2. The steel-plastic combined battery module end plate according to claim 1, wherein the end plate body (1) is provided at both sides thereof with vertical mounting holes (13).

3. The steel-plastic bonded battery module end plate according to claim 1, wherein an output electrode support frame (14) is provided on the top of the end plate body (1).

4. The steel-plastic bonded battery module end plate according to claim 1, characterized in that the inner side face of the end plate body (1) is provided with a weight-reducing cavity (15).

5. The steel-plastic bonded battery module end plate according to claim 1, wherein the end plate body (1) is made of PSU plastic.