CN213905487U

CN213905487U - Module frame based on U-shaped batten and battery module thereof

Info

Publication number: CN213905487U
Application number: CN202023048792.XU
Authority: CN
Inventors: 邓江南; 杜俊丰; 刘晨南; 姜斌; 杨秋立
Original assignee: Dongguan Tafel New Energy Technology Co Ltd; Jiangsu Tafel New Energy Technology Co Ltd; Jiangsu Tafel Power System Co Ltd
Current assignee: Jiangsu Zenergy Battery Technologies Co ltd
Priority date: 2020-12-17
Filing date: 2020-12-17
Publication date: 2021-08-06
Anticipated expiration: 2030-12-17

Abstract

The utility model discloses a module frame based on U-shaped slat and battery module thereof. The module frame comprises two vertical and opposite side end plates and a plurality of U-shaped battens arranged at the tops and the bottoms of the side end plates. The top U-shaped batten and the bottom U-shaped strip are buckled on the side end plates up and down oppositely, and two ends of the top U-shaped batten and the bottom U-shaped strip are connected with the side end plates respectively. A gap is left between the U-shaped strip plate and the U-shaped strip plate, so that the top and the bottom of the module frame are not completely covered. The bottom of the battery is supported by a U-shaped strip plate at the bottom. The positive and negative electrodes are respectively arranged at two ends. Compared with the traditional structure, the temperature control device can bring higher energy density for the battery pack, and the temperature control system in the battery box can directly act on the battery, so that the temperature control efficiency is improved.

Description

Module frame based on U-shaped batten and battery module thereof

Technical Field

The utility model relates to a battery module especially relates to a module frame for fixed battery.

Background

In the prior art, the battery pack is generally implemented in two ways. The first method is to form a battery module by a plurality of batteries and then form a battery by a plurality of battery modules. The second method is to pack the batteries directly to form a battery pack. Regardless of the type of package assembly, the positive and negative poles of the battery are typically located on the top surface of the battery. When the battery pack is used, the battery and the battery are connected by corresponding accessories, such as a connecting bar and a collecting circuit for collecting the temperature and the voltage of the battery. In the case where the positive and negative electrodes of the battery are located on the top surface of the battery, the connection fittings above the battery will occupy a large space. The space occupied by this part of the connection fitting is not very space efficient. The battery pack is determined by the whole area of a battery box of the battery pack, and the batteries are arranged in the battery box in a code row mode no matter the mode that the batteries form a battery module or the mode that the batteries are directly packed into the battery pack, and at the moment, a connecting row or a collecting line needs to be spread over the whole area of the battery box body. More specifically, the distance between the battery post and the battery post is too long, and the length of the connection row or the collection line to be connected is too long.

In addition, in the conventional battery module structure, the bottom plate of the battery module bottom for supporting the bottom of the battery needs to cover the bottom surface of the entire battery module. Under this kind of structure, separate one deck battery module bottom plate between liquid cold plate in the battery box and hot plate and the battery, reduced the temperature control efficiency of battery box liquid cold plate and hot plate from this.

Disclosure of Invention

The utility model discloses the problem that will solve:

1. the energy density of the battery pack is improved;

2. the battery in the battery module is improved, the laminating degree between the battery pack liquid cooling plate and the heating plate is improved, and the temperature control efficiency is improved.

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

according to the utility model, the module frame based on the U-shaped battens comprises two side end plates and a plurality of U-shaped battens; the two side end plates are vertically arranged oppositely; the U-shaped battens are divided into bottom U-shaped battens and top U-shaped battens; two ends of the bottom U-shaped batten are respectively connected with the bottoms of the two side end plates, and a gap is reserved between every two adjacent bottom U-shaped battens; two ends of the top U-shaped batten are respectively connected with the tops of the two side end plates, and a gap is reserved between every two adjacent top U-shaped battens; and a containing cavity for containing a battery is defined by the two side end plates and the bottom U-shaped strip plate and the top U-shaped strip plate.

Further, according to the U-shaped slat-based module frame of the present invention, the U-shaped slat is made of a long strip-shaped metal plate, including a main strip located in the middle and end buckles located at both ends, respectively, which are formed by bending the long strip-shaped metal plate at both ends; the end buckle plate is connected with the outer side surface of the side end plate in a welding mode.

Further, according to the module frame based on the U-shaped strip plate of the utility model, the side end plate comprises a main bearing plate and a plurality of bosses arranged on the top of the main bearing plate; a first sinking platform used for connecting the top U-shaped strip plate is arranged on the outer side of the boss; a second sinking platform used for connecting the bottom U-shaped strip plate is arranged on the outer side below the main bearing plate; the end buckle plates of the bottom U-shaped battens are respectively connected with the second sinking tables, and the end buckle plates of the top U-shaped battens are respectively connected with the first sinking tables.

Further, according to the utility model discloses a module frame based on U-shaped slat, the both sides of the main slat of bottom U-shaped slat are equipped with the enhancement strip.

Further, according to the utility model discloses a based on module frame of U-shaped slat, the main slat cover of each bottom U-shaped slat module frame bottom area is no longer than 80%.

Further, according to the utility model discloses a module frame based on U-shaped slat, bottom U-shaped slat and top U-shaped slat quantity are the same to relative setting from top to bottom.

The battery module comprises the module frame based on the U-shaped ribbon board and a plurality of batteries arranged in the module frame; the batteries are rectangular long bodies and are arranged in the accommodating cavity in a mode that the front end faces and the rear end faces in the long strip direction are aligned and the long strip direction is parallel to the side end plates to form a battery row; the bottom U-shaped slats span under each battery and provide bottom support for the batteries.

Further, according to the battery module of the present invention, the positive and negative poles of the battery are respectively located on the front and rear end faces of the battery in the long-strip direction; the positive electrode and the negative electrode of the battery are arranged in a staggered manner; and the end faces of the front end and the rear end of the battery row are respectively provided with a connecting assembly through a wire harness isolation plate.

Further, according to the battery module of the present invention, the U-shaped strip plate is made of a long strip-shaped metal plate, and includes a main strip plate located in the middle and end buckle plates located at both ends, which are formed by bending the long strip-shaped metal plate at both ends; the batteries are adhered to the main strip plate of the U-shaped strip plate at the bottom through heat conducting structural glue.

Further, according to the battery module of the present invention, end cover plates are further disposed at both ends of the battery module; the end cover plate is connected with the wiring harness isolation plate in a buckling mode.

The technical effects of the utility model are as follows:

1. compared with the battery module with the traditional structure, the connecting assembly is positioned at the end part of the battery module, so that the distance between the pole and the pole is shortened, the space utilization rate of the connecting assembly is improved, the space utilization rate of the battery pack is improved on the whole, and the energy density of the battery pack is improved.

2. The bottom plate for supporting the batteries at the bottom of the battery module is not covered integrally, so that when the batteries are placed in the battery box to form the battery pack, the liquid cooling plate and the heating plate in the battery box can be directly attached to the batteries in the battery module without a module bottom plate at the middle.

3. Compared with the battery module with the traditional structure, the battery module provided by the invention has the advantages that the structure is simple, a plurality of parts are reduced, and the installation is more convenient.

4. The top and bottom of the module are of an incomplete covering structure, thereby reducing the weight of the top and bottom plates of the module.

Drawings

Fig. 1 is an exploded view of the overall structure of the battery module according to the embodiment of the present invention.

Fig. 2 is a schematic structural view of a side end plate.

FIG. 3 is a schematic view of a U-shaped slat structure.

Wherein the content of the first and second substances,

100 is a module frame, 101 is a bottom U-shaped lath, 102 is a top U-shaped lath;

11 is a side end plate, 111 is a main bearing plate, 112 is a boss, 113 is a first sinking platform, 114 is a second sinking platform, and 119 is a module mounting hole;

12 is a U-shaped slat, 121 is a main slat, 1211 is a reinforcing strip, and 122 is an end flap;

13 is an end cap plate, 131 is a first end cap plate, 132 is a second end cap plate;

200 is a battery row, 2 is a battery, 21 is a pole;

301 is a first connection assembly, 302 is a second connection assembly;

4 is a wire harness isolation plate; reference numeral 51 denotes a connecting row, and 52 denotes an output electrode tab.

Detailed Description

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

As shown in fig. 1, a battery module includes a module frame 100 and a plurality of batteries 2 disposed in the module frame 100. The battery 2 is a rectangular strip body, and has a length of 365 to 600mm, a height of 50 to 150mm, and a thickness of 12 to 80 mm. The battery 2 is a battery with opposite electrodes, that is, the positive and negative electrode posts 21 are respectively located on the front and rear end faces of the battery 2 in the longitudinal direction. The batteries 2 are arranged in the module frame 100 such that the front and rear end faces in the longitudinal direction are aligned, thereby forming a battery row 200. The number of the cells 2 in the cell row 200 is even. The positive and negative electrodes of the batteries 2 are arranged in a staggered manner, that is, if the front end of one of the batteries 2 is a positive electrode and the rear end is a negative electrode, the rear end of the battery 2 adjacent to the battery is a negative electrode and the front end is a positive electrode. The front and rear end faces of the battery row 200 are respectively provided with a connecting assembly through a wiring harness isolation plate 4. After the batteries 2 in the battery row 200 are connected in series into a whole through the connecting rows in the front and rear end connecting assemblies, the output electrodes of the battery module are connected through the batteries 2 on the two sides. Tandem refers to the connection of the positive pole of one cell 2 to the negative pole of another cell 2.

The module frame 100, i.e. the module frame based on U-shaped slats, comprises two side end plates 11 and a plurality of U-shaped slats 12. The side end plate 11 is a main bearing plate, preferably made of aluminum profiles hollowed out in the vertical direction. The two side end plates 11 are respectively arranged vertically and oppositely, are positioned at two sides of the battery row 200, are parallel to the long strip direction of each battery 2, and clamp the battery row at two sides of the battery row 200. The U-shaped slat 12 is divided into a bottom U-shaped slat 101 and a top U-shaped slat 102. Wherein, the bottom U-shaped strip 101 is arranged below the battery row 200, and two ends of the bottom U-shaped strip are respectively connected with the bottoms of the two side end plates 11. The top U-shaped strip 102 is arranged above the battery row, and two ends of the top U-shaped strip are respectively connected with the tops of the two side end plates 11. The bottom U-shaped laths 101 and the top U-shaped laths 102 are the same in number and are arranged opposite to each other. Thus, a containing cavity for containing the battery 2 is enclosed between the two side end plates 11 and between the bottom U-shaped lath 101 and the top U-shaped lath 102. The batteries 2 are arranged in the accommodating cavity.

Specifically, referring to fig. 2, the side end plate 11 includes a main support plate 111 and a plurality of bosses 112 disposed on top of the main support plate 111. The main support plate 111 is flush with the battery 2 at the bottom and has a height lower than that of the battery 2. The top of the boss 112 is flush with the top surface of the cell 2. The outer side of the boss 112 is provided with a first sinking platform 113 for connecting the top U-shaped slat 102. The outer side below the main bearing plate 111 is provided with a second sinking platform 114 for connecting the bottom U-shaped strip plate 101. Referring to fig. 3, the U-shaped strip 12 is made of an elongated metal plate body, and includes a main strip 121 located in the middle and end buckles 122 located at both ends, respectively, which are formed by bending the elongated metal plate body at both ends. The end clips 122 of the bottom U-shaped slats 101 abut against the second countertops 114 and are welded to the outer side of the end side plates 11 at the second countertops 114, respectively, such that the main slats 121 of the bottom U-shaped slats 101 cross over the respective cells 2 below the battery row 200 and provide bottom support for the respective cells 2. A gap is left between adjacent bottom U-shaped slats 101. The end snap plates 122 of the top U-shaped strip 102 are respectively abutted against the first sunken steps 113 and welded to the outer side surfaces of the end side plates 11 at the first sunken steps 113, so that the main strip 121 of the top U-shaped strip 102 crosses over the respective batteries 2 above the battery row 200 and snaps the respective batteries 2 above the batteries 2. A gap is left between adjacent top U-shaped slats 102.

The harness isolation plate 4 at the front end of the battery row 200 is closely attached to the front end face of the battery row 200. The connection assembly provided at the front end of the battery row 200 through the harness isolation plate 4 is a first connection assembly 301. The first connection assembly 301 includes a connection bank 51, an output pole tab 52, and a collection line. The harness isolation plate 4 at the rear end of the battery row 200 is closely attached to the rear end face of the battery row 200. The connection component arranged at the rear end of the battery row 200 through the wire harness isolation plate 4 is a second connection component 302. The second connection assembly 301 includes a connection bank 51 and an acquisition line. The connection bank 51 is used to connect the batteries 2 in series. Since the positive and negative electrodes of the batteries 2 are arranged alternately in the battery row 200, the connecting row 51 is only required to connect two adjacent batteries 2 in series. The output pole tab 52 is connected to the pole of the battery 2 at the extreme side of the battery row 200 by a tab row. Thus, the battery row 200 is integrally connected by the series connection of the front and rear cells 2, and then the output electrode of the battery module is output through the output electrode tab 52. Two output electrode tabs 52 are respectively located at both sides of the front end of the battery module.

Furthermore, the side end plate 11 is used as a main bearing plate, and module mounting holes 119 are further arranged in the vertical direction of the two ends. The module mounting hole 119 is used to mount and fix the battery module in the battery case.

Further, in the present embodiment, in order to enable the battery module to be disposed in the battery box, the batteries 2 can be directly attached to the liquid cooling plate and the heating plate in the battery box, so as to achieve a better heat exchange effect, the main plate body 102 of each bottom U-shaped slat 101 covers no more than 80%, preferably no more than half, of the bottom area of the battery row 200 below the battery row 200, that is, the main slat 121 of each bottom U-shaped slat 101 covers no more than 80%, preferably no more than half, of the bottom area of the module frame.

Further, the front end and the rear end of the battery module are respectively provided with an end cover plate 13. The end cover plate 13 is connected with the wiring harness isolation plate 4 in a buckling mode.

Further, the inner side of the main strip 121 of the U-shaped strip 12 is provided with a heat conducting structural adhesive, and the batteries 2 are adhered to the main strip 121 of the U-shaped strip 12 through the heat conducting structural adhesive. The heat conductivity coefficient of the heat-conducting structural adhesive is 0.5-15.0W/K.m, and the bonding strength is 0.5-30.0 MPa.

Further, in order to reinforce the physical strength of the bottom U-shaped slat 101, reinforcing strips 1211 are provided on both sides of the main slat 121 of the bottom U-shaped slat 101. The reinforcing strip 1211 is formed by folding the edge of the main strip 121 to form a reinforcing rib.

Claims

1. A module frame based on U-shaped battens is characterized by comprising two side end plates (11) and a plurality of U-shaped battens (12); the two side end plates (11) are vertically arranged oppositely; the U-shaped lath (12) is divided into a bottom U-shaped lath (101) and a top U-shaped lath (102); two ends of the bottom U-shaped lath (101) are respectively connected with the bottoms of the two side end plates (11), and a gap is reserved between the adjacent bottom U-shaped laths (101); two ends of the top U-shaped lath (102) are respectively connected with the tops of the two side end plates (11), and a gap is reserved between every two adjacent top U-shaped laths (102); an accommodating cavity for accommodating a battery is defined between the two side end plates (11) and between the bottom U-shaped strip plate (101) and the top U-shaped strip plate (102).

2. The U-shaped slat-based modular frame as set forth in claim 1, wherein said U-shaped slat (12) is made of an elongated metal plate body including a main slat (121) located in the middle and end flaps (122) located at both ends, respectively, formed by bending the elongated metal plate body at both ends; the end buckle plate (122) is connected with the outer side surface of the side end plate (11) in a welding mode.

3. The U-bar based modular frame of claim 2, wherein the side end plate (11) comprises a main carrier plate (111) and a plurality of bosses (112) provided on top of the main carrier plate (111); a first sinking platform (113) used for connecting the top U-shaped strip plate (102) is arranged on the outer side of the boss (112); a second sinking platform (114) used for connecting the bottom U-shaped strip plate (101) is arranged on the outer side below the main bearing plate (111); the end buckle plates (122) of the bottom U-shaped laths (101) are respectively connected with the second sinking platforms (114), and the end buckle plates (122) of the top U-shaped laths (102) are respectively connected with the first sinking platforms (113).

4. The U-shaped slat based modular frame as claimed in claim 2, wherein the main slats (121) of said bottom U-shaped slat (101) are provided with reinforcing strips (1211) on both sides.

5. The U-bar based modular frame of claim 2, wherein the main bar (121) of each bottom U-bar (101) covers no more than 80% of the area of the bottom of the modular frame.

6. The U-shaped slat based module frame of claim 1, wherein the bottom U-shaped slat (101) and the top U-shaped slat (102) are equal in number and are disposed opposite one another.

7. A battery module comprising the U-shaped strip plate-based module frame according to any one of claims 1 to 6 and a plurality of batteries (2) disposed in the module frame; the batteries (2) are rectangular long bodies and are arranged in the accommodating cavity in a mode that the front end faces and the rear end faces in the long direction are aligned and the long direction is parallel to the side end plates (11) to form a battery row (200); the bottom U-shaped slats (101) span under each battery (2) and provide bottom support for the batteries.

8. The battery module according to claim 7, wherein the positive and negative electrode posts (21) of the battery (2) are respectively located on the front and rear end faces of the battery (2) in the longitudinal direction; the positive electrode and the negative electrode of the battery (2) are arranged in a staggered manner; the front end face and the rear end face of the battery row (200) are respectively provided with a connecting assembly through a wiring harness isolation plate (4).

9. The battery module according to claim 7, wherein the U-shaped strip (12) is made of an elongated metal plate body, and includes a main strip (121) at the middle and end flaps (122) at both ends, respectively, formed by bending the elongated metal plate body at both ends; the batteries (2) are adhered to the main strip plate (121) of the bottom U-shaped strip plate (101) through a heat conduction structure glue.

10. The battery module according to claim 8, wherein end cover plates (13) are further provided at both ends of the battery module; the end cover plate (13) is connected with the wiring harness isolation plate (4) in a buckling mode.