CN206422135U - Combined type Soft Roll power battery module - Google Patents

Abstract

The utility model provides a kind of combined type Soft Roll power battery module, including at least two battery modules, each battery module includes battery core group, the support for housing the aluminum hull of battery core group and being arranged on outside aluminum hull, support has two opposing parallel side plates, two side plates correspond to be coated on outside two relative sides of aluminum hull respectively, at least one parallel connecting hole through side plate is offered respectively on per side plate, coordinate in connecting hole and connector is installed, the support of adjacent battery modules is fixedly connected by connector, and then the string of several battery module arbitrary structures can be realized, it is in parallel, to form the combined type Soft Roll power battery module of different shape and electricity, to meet multifarious demand, simultaneously by the way of connector and connecting hole coordinate and be connected, facilitate the combination between battery module, while dismounting, so that assemble stable has obtained greatly being lifted between battery module, it is effectively guaranteed functional reliability.

Description

Combined soft pack power battery module

technical field

The utility model relates to a battery module, in particular to a combined soft pack power battery module.

Background technique

With the decrease of non-renewable resources and serious environmental pollution, our country advocates energy conservation and emission reduction, and develops new energy industries. Due to the advantages of high energy, good safety, light weight, and long cycle life, lithium-ion power batteries have been widely used in energy storage systems, especially in the field of electric vehicle energy storage. The traditional soft-pack power battery module is equipped with multiple single cells in the aluminum shell bracket. The positive and negative electrodes of the multiple single cells are respectively collected by copper blocks, and then lead out through the studs as the positive and negative electrodes. The aluminum shell bracket The upper cover is covered with the upper cover leading out the studs. In the power demand of the whole vehicle, the method of connecting multiple single cells in series and parallel to form a soft package power module is generally used to meet the power demand of the whole vehicle.

At present, most of the assembly process adopts the assembly method of connecting multiple battery cells in series and parallel and then fixing them as a whole, which is easy to cause deformation and rupture, and serious extrusion between batteries. Furthermore, Chinese patent document CN204836041U discloses a combined soft battery Including power battery module, the combined soft-pack battery module includes a plurality of single cells 1' and a battery support 2' covered and supported outside the single cells 1'. The battery support 2' is provided with a plurality of battery fixing The seat 3' and the bracket are respectively provided with a peripheral protective wall 4', and the peripheral protective wall 4' is provided with a bracket fixing protrusion 5' and a bracket fixing groove 6' which enable the battery bracket 2' to be combined together. The combined soft-pack power battery module realizes the series and parallel connection of several combined soft-pack power battery modules with any structure through the assembly and cooperation between adjacent battery brackets 2', and then forms battery packs with different shapes and capacities to meet Diversity needs.

However, the above-mentioned combined soft-pack power battery module only achieves the assembly and cooperation between the battery brackets 2' through the cooperation of the bracket fixing protrusion 5' and the bracket fixing groove 6', and its assembly stability is poor. , prone to loosening and falling off, which in turn affects the structural stability of the formed battery pack, thereby reducing the functional reliability of the battery pack. Therefore, how to improve the assembly stability of the combined soft pack power battery module has become an urgent problem to be solved.

Utility model content

For this reason, the technical problem to be solved by the utility model is to overcome the soft bag power factor of the prior art.

In order to achieve the above purpose, the utility model provides a combined soft pack power battery module, including at least two battery modules, each battery module includes a battery pack, an aluminum shell for accommodating the battery pack, and a bracket arranged outside the aluminum shell , the bracket has two relatively parallel side plates, the two side plates are respectively coated on the two opposite sides of the aluminum shell, and each side plate is respectively provided with at least one connecting hole parallel to the side plate, and the connecting hole A connecting piece is installed in cooperation, and the brackets of adjacent battery modules are fixedly connected through the connecting piece.

Preferably, a cover plate is provided between the two side plates of the bracket, the upper end edges of the two side plates are connected by the cover plate, the cover plate covers the upper opening of the aluminum shell, and the tabs of the battery pack protrude from the cover plate.

Preferably, each battery module also includes a conductive row, on which at least two positioning posts are protruded; at least two positioning holes are provided on the cover plate corresponding to the positioning posts, and the conductive row is installed on the cover plate and connected to the battery cell. The tabs protruding from the group are electrically connected, and the positioning posts are matched and inserted in the positioning holes.

Preferably, the combined soft pack power battery module also includes at least two connecting bars, each connecting bar is electrically connected to the conductive bars on the adjacent battery modules, and each connecting bar is electrically connected to the conductive bars on the adjacent battery modules. row, so that the battery modules in the pouch power battery module are connected to each other and integrate the drawn current.

Preferably, each battery module further includes an outer cover corresponding to the upper opening of the aluminum case, and covered with a sealing cover plate.

Preferably, the combined soft pack power battery module also includes two end plates, the two end plates respectively support the outer end faces of the battery modules arranged on the outermost side of the combined soft pack power battery module, and each end plate corresponds to the connector There are several installation holes, and the connectors are inserted in the installation holes and connected to the two end plates.

Preferably, the battery module further includes two insulating films, and each insulating film is respectively pasted on the two outer surfaces of the battery pack to insulate the battery pack from the aluminum case.

Preferably, the connecting piece is a bolt.

The combined soft pack power battery module provided by the utility model has the following advantages:

1. By setting the bracket outside the aluminum shell, the two side plates of the bracket are respectively covered on the two opposite sides of the aluminum shell, which effectively reinforces and protects the aluminum shell, and each side plate There are at least one connecting hole parallel to the side plate, and a connecting piece is installed in the connecting hole, and the brackets of adjacent battery modules are fixedly connected through the connecting piece, so that the series and parallel connection of several battery modules in any structure can be realized to form Combined soft-pack power battery modules with different shapes and power, and then through combined soft-pack power battery modules with different power, to meet the diverse needs. At the same time of disassembly and assembly between the battery modules, the assembly stability between the battery modules has been greatly improved, effectively ensuring the functional reliability.

2. By setting a cover plate between the two side plates of the bracket, the upper edges of the two side plates are connected by the cover plate, so that the assembly between the two side plates is simple and convenient, and the cover plate is closed on the aluminum shell The upper opening of the battery cell group protrudes from the cover plate, forming an effective insulation protection for the battery cell group in the aluminum shell.

3. Since each battery module also includes a conductive row, there are at least two positioning posts protruding from the conductive row, and at least two positioning holes are provided on the cover plate corresponding to the positioning posts. When the conductive row is installed on the cover plate, through The positioning column is inserted in the positioning hole to realize the assembly and positioning of the conductive row on the cover plate. At the same time, the conductive row is also electrically connected to the tab protruding from the battery pack, which facilitates the integration of the drawn current.

4. Since the combined soft-pack power battery module also includes at least two connecting bars, each connecting bar is electrically connected to the conductive bars on adjacent battery modules, so that the battery modules in the soft-pack power battery module are connected to each other. and integrate the drawn current, and then through different series or parallel methods to obtain a combined soft-pack power battery module with a specific structure and capacity. At the same time, when a battery module of the combined soft-pack power battery module fails, Disconnection between the battery modules can be realized only by removing the connecting strips, which is convenient for replacing the battery modules and improves the utilization rate of the combined soft-pack power battery module compared to the way of forming electrical connections by welding.

5. Since each battery module also includes an outer cover, the outer cover corresponds to the upper opening position of the aluminum shell, and covers the sealing cover plate, thereby forming an effective seal on the cover plate at the upper opening of the aluminum shell. The battery core group, the conductive bar on the cover and the connecting strip form an effective protection.

6. Since the combined soft-pack power battery module also includes two end plates, the two end plates respectively support the end faces of the outermost battery modules arranged on the combined soft-pack power battery module, and each end plate corresponds to the connector There are several installation holes, and the connectors are inserted in the installation holes, and connect the two end plates, and then by setting the end plates, the impact resistance of the aluminum shells on both ends of the combined soft pack power battery module is improved, ensuring The assembly stability of the battery module between the end plates can also be achieved through the installation of the end plates in the battery box to realize the installation of the combined soft pack power battery module in the battery box.

Description of drawings

In order to more clearly illustrate the technical solutions of the specific embodiments of the utility model, the utility model will be further described in detail below according to the specific embodiments of the utility model and in conjunction with the accompanying drawings.

Fig. 1 is a perspective view of a combined soft pack power battery module in the prior art.

Fig. 2 is a perspective view of the combined soft pack power battery module of the present invention.

Fig. 3 is a three-dimensional exploded view of the combined soft pack power battery module shown in Fig. 2 .

FIG. 4 is an exploded perspective view of the battery module of the combined soft pack power battery module shown in FIG. 2 .

Each reference numeral in the figure is explained as follows.

1'-single cell; 2'-battery bracket; 3'-battery holder;

4'-peripheral protective wall; 5'-bracket fixing protrusion; 6'-bracket fixing groove;

1-battery core group; 11-pole ear; 2-aluminum shell; 3-bracket; 31-side plate;

311-connection hole; 32-cover plate; 321-positioning hole; 4-connector;

5-conductive row; 51-positioning column; 6-connecting bar; 7-outer cover; 8-end plate;

81-installation hole; 9-insulation film.

detailed description

The technical solutions of the utility model will be clearly and completely described below in conjunction with the accompanying drawings. Apparently, the described embodiments are part of the embodiments of the utility model, but not all of them. Based on the embodiments of the present utility model, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the scope of protection of the present utility model.

In the description of the present utility model, it should be noted that the orientation or positional relationship indicated by the terms "upper", "inner" and "outer" are based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present invention. The utility model and simplified description do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operate in a specific orientation, and therefore should not be construed as limiting the utility model.

In the description of the present utility model, it should be noted that, unless otherwise clearly stipulated and limited, the terms "installation", "connection" and "connection" should be understood in a broad sense, for example, it can be a fixed connection or a flexible connection. Disassembled connection, or integral connection; it can be directly connected, or indirectly connected through an intermediary, and it can be the internal communication of two components. Those of ordinary skill in the art can understand the specific meanings of the above terms in the present utility model in specific situations.

In addition, the technical features involved in different embodiments of the present invention described below can be combined with each other as long as they do not constitute conflicts with each other.

A specific implementation of the combined soft pack power battery module shown in Figure 2 includes at least two battery modules (not shown in the figure), as shown in Figure 4, each battery module includes:

Battery pack 1;

Aluminum shell 2, housing battery pack 1;

The bracket 3 is arranged outside the aluminum shell 2. The bracket 3 has two relatively parallel side plates 31, and the two side plates 31 are respectively coated on the two opposite sides of the aluminum shell 2. Each side plate 31 is respectively provided with There is at least one connecting hole 311 parallel to the side plate 31 , and a connecting piece 4 is installed in the connecting hole 311 , and the brackets 3 of adjacent battery modules are fixedly connected by the connecting piece 4 .

The above-mentioned combined soft pack power battery module, by setting the bracket 3 outside the aluminum shell 2, the two side plates 31 of the bracket 3 are respectively coated on the two opposite sides of the aluminum shell 2, which effectively plays an important role in the aluminum shell 2. In addition, each side plate 31 is provided with at least one connection hole 311 parallel to the side plate 31. A connector 4 is installed in the connection hole 311, and the bracket 3 of the adjacent battery module passes through the connector. 4 Fixed connection, and then can realize the series and parallel connection of several battery modules in any structure to form combined soft-pack power battery modules with different shapes and power, and then use combined soft-pack power battery modules with different power to meet the diversity At the same time, the connection between the connecting piece 4 and the connecting hole 311 is adopted, which facilitates the disassembly and assembly of the battery modules, greatly improves the assembly stability of the battery modules, and effectively ensures the functional reliability.

It should be noted that the battery modules in this embodiment have three specifications: 20AH, 30AH, and 50AH. By arbitrarily connecting battery modules of these three specifications in series or in parallel, they can be quickly combined into a combined soft battery with any structure and capacity. Pack power battery module. In addition, the battery module can also be a module of other capacity specifications, which is set according to actual needs.

Specifically, as shown in FIG. 4 , a cover plate 32 is provided between the two side plates 31 of the bracket 3 , the upper edges of the two side plates 31 are connected by the cover plate 32 , and the cover plate 32 is covered on the upper surface of the aluminum shell 2 opening, the tabs 11 of the battery core group 1 protrude from the cover plate 32, thereby making the connection structure between the two side plates 31 simple, facilitating the assembly of the bracket 3, and forming an effective structure for the battery core group 1 in the aluminum shell 2. insulation protection.

At the same time, each battery module also includes a conductive row 5, on which at least two positioning posts 51 protrude; at least two positioning holes 321 are provided on the cover plate 32 corresponding to the positioning posts 51, and the conductive row 5 is installed on the cover. plate 32 and is electrically connected with the tab 11 protruding from the battery pack 1, and the positioning column 51 is fitted and inserted in the positioning hole 321, and then when the conductive bar 5 is installed on the cover plate 32, by fitting the positioning column 51 Inserted in the positioning hole 321, the assembly and positioning of the conductive bar 5 on the cover plate 32 is realized. At the same time, the conductive bar 5 is also electrically connected with the tab 11 protruding from the battery pack 1, thereby facilitating the integration of the drawn current.

In order to realize the electrical connection between adjacent battery modules to form combined soft-pack power battery modules with different structures and electric quantities, the combined soft-pack power battery module also includes at least one connecting bar 6, and each connecting bar 6 is respectively Electrically connect the conductive bars 5 on the adjacent battery modules so that the battery modules in the pouch power battery module are connected to each other and integrate the drawn current. As shown in Figure 3, when three battery modules are connected in parallel, use There are two connection bars 6 , and the two connection bars 6 are respectively electrically connected to the same polarity guide bars on the three battery modules, so as to integrate the drawn current. Furthermore, different series or parallel methods can be used to obtain a combined soft-pack power battery module with a specific structure and capacity. At the same time, when a battery module of the combined soft-pack power battery module fails, only by removing the connecting bar The disconnection between the battery modules can be realized, which is convenient for replacing the battery modules and improves the utilization rate of the combined soft pack power battery module compared with the way of forming electrical connections by welding.

In the process of using the combined soft-pack power battery module, it often has high requirements for its waterproof and dustproof function. Therefore, in the design process, it is also required to form an effective insulating seal for the battery pack 1 in the aluminum shell 2. Furthermore, each battery module also includes an outer cover 7 and two insulating films 9. As shown in FIGS. respectively attached to the two outer surfaces of the battery pack 1 to insulate the battery pack 1 from the aluminum case 2 . Furthermore, the closure of the outer cover 7 forms an effective seal on the cover plate 32 at the upper opening of the aluminum shell 2, and effectively protects the battery pack 1 in the aluminum shell 2, the conductive row 5 and the connecting strip 6 on the cover plate 32. .

As a preferred embodiment, the combined soft pack power battery module also includes two end plates 8, as shown in Figure 2 and Figure 3, the two end plates 8 respectively support the outermost side of the combined soft pack power battery module Outside the end face of the battery module, each end plate 8 is provided with several mounting holes corresponding to the connecting piece 4, and the connecting piece 4 is inserted in the mounting hole, and connects the two end plates 8, and then by setting the end plate 8, it improves the The impact resistance of the aluminum shell 2 on both ends of the combined soft pack power battery module ensures the assembly stability of the battery module between the end plates 8, and at the same time, the end plate 8 can also be installed on the battery box to achieve The installation of the combined soft pack power battery module in the battery box.

As a preferred embodiment, the connecting member 4 is a bolt, and the bolt 4 is fixed on the end plate through a nut (not shown in the figure). In addition to this, other connecting elements 4 such as screws may also be used, and the details are not limited thereto.

Apparently, the above-mentioned embodiments are only examples for clear description, rather than limiting the implementation. For those of ordinary skill in the art, other changes or changes in different forms can be made on the basis of the above description. It is not necessary and impossible to exhaustively list all the implementation manners here. And the obvious changes or changes derived therefrom are still within the scope of protection of the present invention.

Claims (8)

1. a kind of combined type Soft Roll power battery module, including at least two battery modules, it is characterised in that each battery Module includes：

Battery core group (1)；

Aluminum hull (2), houses the battery core group (1)；

Support (3), is arranged on the aluminum hull (2) outside, and the support (3) has two opposing parallel side plates (31), described in two Side plate (31) corresponds to be coated on outside two relative sides of the aluminum hull (2) respectively, is opened respectively on each side plate (31) Coordinate provided with least one parallel connecting hole (311) through the side plate (31), in the connecting hole (311) and connection is installed Part (4), the support (3) of the adjacent battery module is fixedly connected by the connector (4).

2. combined type Soft Roll power battery module according to claim 1, it is characterised in that：Two of the support (3) Cover plate (32) is provided between the side plate (31), the upper edge of two side plates (31) is connected by the cover plate (32), The cover plate (32) covers the upper shed in the aluminum hull (2), and the lug (11) of the battery core group (1) stretches out the cover plate (32)。

3. combined type Soft Roll power battery module according to claim 2, it is characterised in that：Each battery module is also Including busbar (5), at least two locating dowels (51) are convexly equipped with the busbar (5)；Correspond to institute on the cover plate (32) State locating dowel (51) and be provided with least two positioning holes (321), the busbar (5) be arranged on the cover plate (32) and with institute The lug (11) for stating battery core group (1) stretching is electrically connected with, and the locating dowel (51), which coordinates, is plugged in the positioning hole (321) In.

4. combined type Soft Roll power battery module according to claim 3, it is characterised in that：The combined type Soft Roll power Battery module also includes at least two connection straps (6), and each connection strap (6) is electrically connected described in phase on battery module The busbar (5) so that mutual conduction between the battery module in the Soft Roll power battery module, and integrate and draw Go out electric current.

5. the combined type Soft Roll power battery module according to any one of claim 2-4, it is characterised in that：It is each described Battery module also includes enclosing cover (7), and the enclosing cover (7) corresponds to the upper shed position of the aluminum hull (2), and it is described to cover sealing Cover plate (32).

6. the combined type Soft Roll power battery module according to any one of claim 1-4, it is characterised in that：The combination Formula Soft Roll power battery module also includes two end plates (8), and two end plates (8) support that to be arranged on the combined type soft respectively Outside the end face of the outermost battery module of bag power battery module, the connection is corresponded on each end plate (8) Part (4) offers several mounting holes (81), and the connector (4) is plugged in the mounting hole (81), and connects two institutes State end plate (8).

7. the combined type Soft Roll power battery module according to any one of claim 1-4, it is characterised in that：The battery Module also includes two insulation films (9), and each insulation film (9) is attached at two outer surfaces of the battery core group (1) respectively, So as to be insulated between the battery core group (1) and the aluminum hull (2).

8. the combined type Soft Roll power battery module according to any one of claim 1-4, it is characterised in that：The connection Part (4) is bolt.