TWI751330B - Battery module - Google Patents

Abstract

A battery module includes a frame body and at least two battery units. The frame body includes an outer frame and at least one rib, wherein the rib is connected to the outer frame and located in the frame. The battery units are disposed in the outer frame, wherein the rib is located between the two battery units, each of the battery units includes a main body portion and at least one protruding edge portion extended from the main body portion, the protruding edge portion of one of the battery units at least partially overlaps with the protruding edge portion of another one of the battery units, so as to form a crooked gap between the two battery units, and the rib is crooked to be extended along the crooked gap.

Description

battery module

The present invention relates to an electronic component, and particularly to a battery module.

With the advancement of today's technology, notebook computers have become the mainstream of the consumer electronic product market due to their increasingly robust functions, smaller size and portability.

The notebook computer includes a battery module installed on the host computer to provide the power required for the operation of the notebook computer. The battery module uses a frame to accommodate battery cells, and the frame has ribs to isolate adjacent battery cells. In addition, the exterior of each battery unit is covered with aluminum-plastic film to avoid battery leakage. However, the aluminum-plastic films are joined on the sides of the battery cells to form flanges, and the juxtaposition of these flanges and ribs leads to an increase in the overall width of the battery module, which is not conducive to reducing the volume of the battery module.

The present invention provides a battery module which can have a smaller width.

The battery module of the present invention includes a frame body and at least two battery units. The frame body includes an outer frame and at least one rib, wherein the rib is connected to the outer frame and located in the outer frame. The battery cells are arranged in the outer frame, wherein the ribs are located between the two battery cells, each battery cell includes a main body portion and at least one flange portion extending from the main body portion, and the flange portion of one battery cell at least partially overlaps the other. The flange portion of one battery unit forms a curved gap between the two battery units, and the rib is curved and extends along the curved gap.

In an embodiment of the present invention, the distance between the above-mentioned at least two battery cells is less than twice the length of each flange portion.

In an embodiment of the present invention, each of the above-mentioned battery cells includes a battery body and a coating film, and the coating film covers the battery body and forms at least one flange portion on the side of the battery body.

In an embodiment of the present invention, the above-mentioned coating film is an aluminum plastic film.

In an embodiment of the present invention, the rib includes a horizontal section and two vertical sections, the two vertical sections are respectively connected to opposite ends of the horizontal section, and the two vertical sections extend in opposite directions respectively .

In an embodiment of the present invention, each of the above-mentioned vertical sections and horizontal sections has rounded corners.

In an embodiment of the present invention, the above-mentioned horizontal section and the two flange portions at least partially overlap.

In an embodiment of the present invention, each of the above-mentioned vertical sections is located between the main body portion of one battery cell and the flange portion of the other battery cell.

In an embodiment of the present invention, the length of each vertical section is smaller than the length of the horizontal section.

In an embodiment of the present invention, there is a gap between the main body of each of the above-mentioned battery cells and the at least one rib.

In an embodiment of the present invention, there is a gap between at least one flange portion and at least one rib of each of the above-mentioned battery cells.

In an embodiment of the present invention, the above-mentioned battery module includes a circuit board, wherein the circuit board is disposed on the outer frame and is electrically connected to each battery unit.

Based on the above, in the battery module of the present invention, the flange portions of two adjacent battery cells overlap each other, thereby effectively reducing the overall width of the battery module. Since the flanges of two adjacent battery cells overlap each other, the gap between the two battery cells is curved. Therefore, the present invention designs the ribs used to isolate the battery cells to be curved accordingly, so that the ribs can conform to the curved shape. A gap in the shape of a battery extends and is located between the two battery cells, so that the two adjacent battery cells are isolated from each other.

In order to make the above-mentioned features and advantages of the present invention more obvious and easy to understand, the following embodiments are given and described in detail with the accompanying drawings as follows.

FIG. 1 is a perspective view of a battery module according to an embodiment of the present invention. FIG. 2 is a perspective view of the housing of FIG. 1 . Please refer to FIG. 1 and FIG. 2 , the battery module 100 of the present embodiment is, for example, a battery module installed in a notebook computer. The battery module 100 includes a frame body 110 and at least two battery units 120 (shown as three). The frame body 110 includes an outer frame 112 and at least one rib 114 (two are shown), and each rib 114 is connected to the outer frame 112 and located in the outer frame 112 . Each battery unit 120 is disposed in the outer frame 110, and each rib 114 is located between two adjacent battery units 120, so as to isolate the battery units 120 from each other and avoid unintended electrical contact. The battery module 100 further includes a circuit board 130 . The circuit board 130 is, for example, a protection circuit board, which is disposed on the outer frame 112 and is electrically connected to each battery unit 120 .

FIG. 3 is a schematic cross-sectional view of the battery module of FIG. 1 along line I-I. As shown in FIG. 3 , each battery cell 120 includes a main body portion 122 and at least one flange portion 124 extending from the main body portion 122 . The flange portion 124 of one battery cell 120 at least partially overlaps with another adjacent battery cell The flange portion 124 of the cell 120 forms a curved gap between the two battery cells 120 . FIG. 4 is a partial perspective view of the rib of FIG. 1 . As shown in FIGS. 3 and 4 , the rib 114 has a curved shape and extends along the curved gap.

In the above configuration, the flange portions 124 of two adjacent battery cells 120 overlap each other, thereby effectively reducing the overall width of the battery module 100 . Specifically, with this configuration, the distance L1 (shown in FIG. 3 ) between two adjacent battery cells 120 can be less than twice the length L2 (shown in FIG. 3 ) of each flange portion 114 .

On top of that, because the flanges 124 of two adjacent battery cells 120 overlap each other, the gap between the two battery cells 120 is curved, so in this embodiment, the ribs 114 for isolating the battery cells 120 are correspondingly designed to be curved The rib 114 can conform to the curved gap and extend between the two battery cells 120, thereby isolating the two adjacent battery cells 120 from each other.

Referring to FIG. 3 , in this embodiment, each battery unit 120 includes a battery body 120 a and a coating film 120 b . The coating film 120 b is, for example, an aluminum-plastic film used to prevent the battery unit 120 from leaking liquid, which covers the battery The body 120a is joined to the side of the battery body 120a to form the flange portion 124 .

In this embodiment, there is a gap between the main body portion 122 of each battery cell 120 and the rib 114 , and there is a gap between the flange portion 124 of each battery cell 120 and the rib 114 to prevent the battery cell 120 and the rib 114 from interfering with each other. and difficult to assemble.

The structure of the rib 114 of this embodiment will be described in detail below. As shown in FIGS. 3 and 4 , each rib 114 includes a horizontal section 114a and two vertical sections 114b, the horizontal section 114a and the two flanges 124 at least partially overlap, and the two vertical sections 114b are respectively connected to the horizontal sections The opposite ends of the segment 114a, and the two vertical segments 114b respectively extend in opposite directions. Each vertical section 114b is located between the main body portion 122 of one battery cell 120 and the flange portion 124 of the other battery cell 120 . The length of each vertical section 114b in the vertical direction is, for example, smaller than the length of the horizontal section 114a in the horizontal direction. In addition, each vertical section 114b and the horizontal section 114a have rounded corners 114c to prevent the coating film 120b from being scratched by the ribs 114 .

To sum up, in the battery module of the present invention, the flange portions of two adjacent battery cells overlap each other, thereby effectively reducing the overall width of the battery module. Specifically, with this configuration, the distance between two adjacent battery cells can be less than twice the length of each flange portion 114 . Since the flanges of two adjacent battery cells overlap each other, the gap between the two battery cells is curved. Therefore, the present invention designs the ribs used to isolate the battery cells to be curved accordingly, so that the ribs can conform to the curved shape. A gap in the shape of a battery extends and is located between the two battery cells, so that the two adjacent battery cells are isolated from each other.

Although the present invention has been disclosed above by the embodiments, it is not intended to limit the present invention. Anyone with ordinary knowledge in the technical field can make some changes and modifications without departing from the spirit and scope of the present invention. Therefore, The protection scope of the present invention shall be determined by the scope of the appended patent application.

100‧‧‧Battery module 110‧‧‧Frame body 112‧‧‧Outer frame 114‧‧‧rib 114a‧‧‧horizontal section 114b‧‧‧vertical section 114c‧‧‧rounded corners 120‧‧‧battery unit 120a‧‧‧Battery body 120b‧‧‧Coating film 122‧‧‧Main body part 124‧‧‧Flange part 130‧‧‧Circuit board L1‧‧‧distance L2‧‧‧length

FIG. 1 is a perspective view of a battery module according to an embodiment of the present invention. FIG. 2 is a perspective view of the housing of FIG. 1 . FIG. 3 is a schematic cross-sectional view of the battery module of FIG. 1 along line I-I. FIG. 4 is a partial perspective view of the rib of FIG. 1 .

114‧‧‧ribs

114a‧‧‧Horizontal Section

114b‧‧‧Vertical Section

114c‧‧‧Round Corner

120‧‧‧battery unit

120a‧‧‧Battery body

120b‧‧‧Coating film

122‧‧‧Main body

124‧‧‧Flange

L1‧‧‧distance

L2‧‧‧Length

Claims (12)

A battery module, comprising: a frame body including an outer frame and at least one rib, wherein the at least one rib is connected to the outer frame and located in the outer frame; and at least two battery cells are arranged in the outer frame, The rib is located between the at least two battery cells, each of the battery cells includes a main body portion and at least one flange portion extending from the main body portion, and the flange portion of one battery cell at least partially overlaps the other one. The flange portion of the battery unit forms a curved gap between the at least two battery units, and the rib is curved and extends along the curved gap. The battery module according to claim 1, wherein the distance between the main body parts of the battery cells adjacent to each other in the first direction among the at least two battery cells is smaller than the distance between the flange parts in the first direction. Twice the length in one direction. The battery module of claim 1, wherein each of the battery cells includes a battery body and a coating film, and the coating film includes a battery body that covers the battery body to form the main body portion together with the battery body The first portion and the second portion of the at least one flange portion are formed on the side of the main body portion. The battery module according to item 3 of the claimed scope, wherein the covering film is an aluminum-plastic film. The battery module of claim 1, wherein the rib includes a horizontal section and two vertical sections, the two vertical sections are respectively connected to opposite ends of the horizontal section, and the two vertical sections The segments extend in opposite directions, respectively. The battery module of claim 5, wherein each of the vertical section and the horizontal section has rounded corners. The battery module of claim 5, wherein the horizontal section and the two flange portions at least partially overlap. The battery module of claim 5, wherein each of the vertical sections is located between the main body portion of one of the battery cells and the flange portion of the other battery cell. The battery module of claim 5, wherein the length of each of the vertical sections is smaller than the length of the horizontal section. The battery module of claim 1, wherein a gap is formed between the main body portion of each of the battery cells and the at least one rib. The battery module of claim 1, wherein a gap is formed between the at least one flange portion and the at least one rib of each of the battery cells. The battery module of claim 1, comprising a circuit board, wherein the circuit board is disposed on the outer frame and is electrically connected to each of the battery cells.

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