TWI714874B - Battery connection module - Google Patents

Abstract

A battery connection module is suitable for connecting a battery pack. The battery connection module includes: a carrying plate; a plurality of bus members installed on the carrying plate and suitable for electrically connecting a plurality of batteries of the battery pack; and a flexible The circuit board is mounted on the carrier plate and is mechanically and electrically connected to the plurality of busbars, and includes a body portion and an extended flexible plug-in portion; and a battery management board mounted on the The carrier plate is located above the flexible circuit board and includes a connector; the end of the flexible plug-in part is connected to the connector on the battery management board. The battery management board of the present invention is directly installed and combined on the carrying plate and electrically connected with the bus through the flexible circuit board, thus forming an integrated module that is convenient for subsequent assembly and use.

Description

Battery connection module

The invention relates to a battery connection module, in particular to a battery connection module for connecting rechargeable batteries in series for high-power output.

In recent years, a battery system that generally consists of multiple electrochemical rechargeable batteries side by side to form a battery pack, such as a car battery, usually uses a battery connection module to connect the batteries in series to form a pair of output electrodes, and the battery connection module is also provided There is a control circuit to connect to the Battery Management System (BMS).

Chinese Patent No. CN102751465B (corresponding case JP2012-226969 A) discloses a battery module, which is externally connected to a mating side electrical connector of an electrical processing device through an electrical connector at the end of a flexible flat cable (FFC). The flexible flat cable (FFC) extends a long distance to connect to an external electrical processing device (equivalent to a battery management board), and must be connected to each other through two connectors.

Chinese Patent Publication No. CN105144463A (corresponding cases US 2016/0043446, JP2012-226969 A, WO2014/173684 A2) discloses a battery contact system for electrochemical devices, in which the monitoring unit (equivalent to the battery management board) has a plug The signal transmission system includes one or more signal lines, and the signal lines electrically connect each signal source with the signal line connector. The plug-in contact connector of the monitoring unit is matched with the signal line connector of the signal conduction system. Although the monitoring unit is housed in the load-bearing component, the signal transmission system is connected to the signal line connector through many wires, and the monitoring unit needs to be connected to each other through two connectors.

Therefore, one of the objectives of the present invention is to provide a battery connection module with a battery management board and a reduced number of connectors.

Therefore, in some embodiments, the battery connection module of the present invention is suitable for connecting a battery pack, and the battery connection module includes a carrier plate, a plurality of bus members, a battery management board, and a flexible circuit board. The multiple busbars are installed on the carrier plate and are suitable for electrically connecting multiple batteries of the battery pack. The battery management board is installed on the carrying plate and located above the flexible circuit board, and includes a connector. The flexible circuit board is mounted on the carrier plate and is mechanically and electrically connected to the plurality of busbars, and includes a body portion and an extended flexible connector portion, and the end of the flexible connector portion is inserted It is connected to the connector for the flexible circuit board to be electrically connected with the connector for the flexible circuit board.

In some embodiments, the flexible plug-in part is formed by cutting the body part.

In some embodiments, three sides of the flexible plug-in portion are disconnected from the main body portion, so that the flexible plug-in portion is elongated, and one end of the flexible plug-in portion is connected to the main body portion, and the The other end of the flexible plug-in portion has an exposed conductive wire for plugging in the connector for the flexible circuit board.

In some embodiments, the flexible plug-in portion extends from one end edge of the body portion of the flexible circuit board.

In some embodiments, the flexible plug-in portion is bent reversely and then plugged into the connector for the flexible circuit board.

In some embodiments, the connector is a connector for a flexible circuit board, and the flexible plug-in portion has exposed conductive wires to be plugged into the connector for a flexible circuit board.

In some implementations, the flexible plug-in portion is installed on another connector to correspond to the connector on the battery management board.

In some embodiments, the carrier tray has an installation position for the battery management board, so that the battery management board is located above the flexible circuit board.

In some embodiments, the carrier plate further has a plurality of first installation structures provided on the circumference of the installation position, and the battery management board has a plurality of second installation structures respectively corresponding to the plurality of first installation structures , To fix the battery management board at the installation position.

In some embodiments, the plurality of first mounting structures are positioning posts and/or key holes, and the plurality of second mounting structures are perforations corresponding to the positioning posts and/or key holes.

In some embodiments, the installation position is defined by four bumps, the positions of the plurality of bumps correspond to the four corners of the battery management board, and the plurality of first installation structures are respectively disposed on the Multiple bumps.

In some embodiments, the flexible circuit board further includes a plurality of conductive sheets connected to the main body and mechanically and electrically connected to the plurality of bus members, respectively.

In some embodiments, the flexible circuit board further includes a plurality of upper limit pieces connected to the body portion and respectively protruding above the plurality of bus members.

In some embodiments, each upper limit piece has a fixing hole, and the carrier plate has a plurality of fixing posts respectively penetrated through the plurality of fixing holes.

In some embodiments, the flexible circuit board has a plurality of mounting holes, and the carrier plate has a plurality of mounting posts respectively penetrated through the plurality of mounting holes.

The present invention has at least the following effects: the battery management board is directly installed and combined on the carrying plate and electrically connected to the bus through the flexible circuit board, and the integrated module is formed as an integrated module that is convenient for subsequent assembly and use. Moreover, the battery management board can be directly connected with the flexible circuit board only by providing a connector for the flexible circuit board, which can reduce the number of components and save costs.

Further, the flexible plug-in part connected to the battery management board is formed by cutting the board body constituting the flexible circuit board, which can effectively use the space, and is easy to match the position where the battery management board is combined on the carrier plate, so that the battery management board is installed The location has the flexibility to change.

Before the present invention is described in detail, it should be noted that in the following description, similar elements are represented by the same numbers.

1 to 3, an embodiment of the battery connection module of the present invention is suitable for connecting a battery pack 5. The battery connection module includes a carrier plate 1, a plurality of bus members 2, a battery management board 3 (Battery Management System, abbreviated BMS) and a flexible circuit board 4.

The multiple busbars 2 are installed on the carrier plate 1 and are suitable for electrically connecting multiple batteries 51 of the battery pack 5. Specifically, the carrier plate 1 is made of insulating material, and has a base wall 11, two frame walls 12 connected to both sides of the base wall 11 opposite to each other, a plurality of partition walls 13, and a plurality of limit walls 14 The plurality of frame walls 12, the partition wall 13 and the limiting wall 14 jointly define a plurality of installation grooves 15 to accommodate the plurality of busbars 2 respectively. The carrier plate 1 also has a plurality of upper limit blocks 16 protruding from the plurality of frame walls 12, and the plurality of upper limit blocks 16 are respectively located above the plurality of confluence members 2 to separate the plurality of Confluence piece 2 limit. Two of the plurality of bus members 2 are electrode output members 2', and the remaining bus members 2 each have two electrode connecting portions 21 respectively connected to the electrodes 52 of two adjacent batteries 51 and one connected to the two electrode connecting portions 21 Between the buffer protrusions 22, the plurality of batteries 51 are connected in series by the plurality of bus members 2, and the two electrode output members 2'are respectively connected to the electrodes 52 at both ends of the head and tail. The carrier plate 1 also has a plurality of supporting ribs 17 corresponding to the plurality of buffer protrusions 22 respectively.

Referring to FIGS. 4 to 7, the battery management board 3 is installed on the carrier plate 1 and includes a connector 31 for a flexible circuit board and a main circuit connector 32. The main circuit connector 32 is suitable for connecting the main circuit system (not shown) of the equipment installed in the battery pack 5. The carrier plate 1 has an installation position 18 for setting the battery management board 3 so that the battery management board 3 is located above the flexible circuit board 4. The carrier plate 1 also has a plurality of first mounting structures 19 arranged on the peripheral side of the mounting position 18, and the battery management board 3 has a plurality of second mounting structures 33 corresponding to the plurality of first mounting structures 19, respectively. The battery management board 3 is fixed to the installation position 18. In this embodiment, the installation position 18 is defined by four protrusions 181 protruding from the base wall 11, and the positions of the plurality of protrusions 181 correspond to the four corners of the battery management board 3 respectively. The plurality of first mounting structures 19 are respectively arranged on the plurality of bumps 181. The plurality of first mounting structures 19 are positioning posts 191 and locking holes 192, and each protrusion 181 is provided with a positioning post 191 and a locking hole 192. The plurality of second mounting structures 33 are perforations. The perforations 33 corresponding to the positioning pillars 191 are used for the positioning pillars 191 to pass through, and the positioning pillars 191 can be heat-melted to fix the battery management board 3 after being penetrated. The perforation 33 corresponding to the key hole 192 can be used for a locking member (not shown), such as a screw, to be threaded to the key hole 192 to fix the battery management board 3. In this embodiment, the plurality of first mounting structures 19 are positioning posts 191 and key holes 192 to strengthen and fix the battery management board 3. However, in a modified embodiment, the plurality of first mounting structures 19 may be positioning posts 191 or keyhole 192 can be set alternatively to have a fixed effect.

The flexible circuit board 4 is mounted on the carrier plate 1 and is mechanically and electrically connected to the plurality of busbars 2, and includes a flexible plug-in portion 42, and the end of the flexible plug-in portion 42 is plugged The connector 31 for the flexible circuit board is electrically connected to the connector 31 for the flexible circuit board. In this embodiment, the flexible circuit board 4 further includes a body portion 41. The flexible connector portion 42 is formed by cutting the body portion 41. Three sides of the flexible connector portion 42 are disconnected from the body portion 41. It is elongated and has one end connected to the main body 41 and the other end has an exposed conductive wire 421 to be inserted into the flexible circuit board connector 31. Furthermore, the flexible plug-in portion 42 is bent in the reverse direction and then plugged into the connector 31 for the flexible circuit board.

In this embodiment, the main body 41 has a plurality of mounting holes 411, the carrier plate 1 has a plurality of mounting posts 111 respectively penetrating the plurality of mounting holes 411, and the plurality of mounting posts 111 are formed by the base. The wall 11 protrudes to position the main body 41 relative to the carrier plate 1. Moreover, the plurality of mounting posts 111 can be further heat-melted to fix the body portion 41. The flexible circuit board 4 further includes a plurality of conductive sheets 43 connected to the main body 41 and mechanically and electrically connected to the plurality of bus elements 2, and a plurality of conductive sheets 43 connected to the main body 41 and protruding respectively The upper limit piece 44 above the plurality of confluence members 2. The main body 41 is electrically connected to the plurality of bus elements 2 through the plurality of conductive sheets 43, and then connected to the conductive wire of the flexible plug portion 42 through the circuit traces (not shown) of the main body 41 421, and the plurality of conductive wires 421 are electrically connected to the flexible circuit board connector 31, so that the plurality of busbars 2 are electrically connected to the battery management board 3. In addition, in this embodiment, the flexible circuit board 4 further includes a plurality of temperature sensing elements 45 arranged on the main body 41, and the plurality of temperature sensing elements 45 also pass through the circuit traces and the circuit traces of the main body 41. The flexible plug-in portion 42 is electrically connected to the battery management board 3. Each upper limit piece 44 has a fixing hole 441, the carrier plate 1 has a plurality of fixing posts 112 respectively penetrated through the plurality of fixing holes 441, wherein the body portion 41 also has a plurality of positions corresponding to the plurality of The through holes 412 of the fixing holes 441 are for the plurality of fixing posts 112 to pass through. The plurality of fixing posts 112 may be further heat-melted to fix the plurality of upper limit pieces 44. The plurality of upper limit pieces 44 and the plurality of upper limit blocks 16 jointly limit the corresponding busbar 2.

In summary, the battery management board 3 is directly installed and combined on the carrier plate 1 and electrically connected to the bus 2 through the flexible circuit board 4, forming an integrated module that is convenient for subsequent assembly and use. Moreover, the battery management board 3 only needs to be provided with a flexible circuit board connector 31 to be directly connected to the flexible circuit board 4, which can reduce the number of components and save costs. Further, the flexible plug-in portion 42 connected to the battery management board 3 is formed by cutting the board that constitutes the flexible circuit board 4, which can effectively use the space and is easy to match the position where the battery management board 3 is combined on the carrier plate 1 The position of the battery management board 3 is flexible to change.

The second embodiment of the present invention will be described with reference to FIGS. 8 and 9, where FIG. 8 is a perspective view of the second embodiment of the battery connection module of the present invention; FIG. 9 is a perspective view showing the details of the flexible plug-in part of this embodiment. For the sake of brevity, only the different parts from the above-mentioned embodiment are described here, and the description of the remaining same parts refers to the above.

As shown in FIG. 8, in this embodiment, the flexible plug-in portion 42' of the flexible circuit board 4'is provided at one end of the flexible circuit board 4', that is, the flexible plug-in portion 42' is self-contained from the flexible circuit board. One end edge (the right end edge shown in the figure) of the 4'body portion 41' extends out, and is reversely bent 180 degrees to be connected to a connector 423', as shown in FIG. 9, the connector 423 'With a terminal 4230', the terminal 4230' will pierce the flexible circuit board and be electrically connected to its wires. The connector 423' will correspond to the connector 31' on the battery management board 3', so as to realize the electrical connection between the multiple bus elements 2 and the battery management board 3'through the flexible circuit board 4'.

In this embodiment, in order to realize the corresponding insertion of the connector 423' and the connector 31' on the battery management board 3', the length of the battery management board 3'is extended to make the connector 31' and the flexible plug-in part The 42' connector 423' corresponds to plugging. Of course, the length of the battery management board 3'can also remain unchanged, but the flexible plug portion 42' is bent in the reverse direction and then continues to extend until it can be plugged into the connector 31' of the battery management board 3'.

In addition, for example, the connector 423' of the flexible plug-in portion 42' can extend from the flexible circuit board 4'from the left side in the figure and be bent 180 degrees to connect to the connector 423', which also corresponds to it. Ground, the connector 31 ′ of the battery management board 3 ′ is also correspondingly disposed on the left edge of the battery management board 3 ′ in the figure, so as to correspond to the connector 423 ′ of the flexible plug-in portion 42 ′. In this case, the length of the battery management board 3'no longer needs to be extended.

Based on the above-mentioned embodiment, the battery management board 3'can be electrically connected to the bus 2 through the flexible circuit board 4', forming an integrated module that is convenient for subsequent assembly and use. Moreover, the battery management board 3'only needs to be provided with a connector 31' to be directly connected to the flexible circuit board 4', which can reduce the number of components and save costs. Moreover, one end edge of the body portion 41' of the flexible circuit board 4'directly extends from the flexible plug-in portion 42', which makes the structure and production process more simplified.

However, the above are only examples of the present invention. When the scope of implementation of the present invention cannot be limited by this, all simple equivalent changes and modifications made in accordance with the scope of the patent application of the present invention and the content of the patent specification still belong to This invention patent covers the scope.

1‧‧‧Carrier plate 11‧‧‧Base wall 111‧‧‧Mounting post 112‧‧‧Fixed post 12‧‧‧Frame wall 13‧‧‧Partition wall 14‧‧‧Limiting wall 15‧‧‧Mounting slot 16 ‧‧‧Upper limit block 17‧‧‧Support rib 18‧‧‧Installation position 181‧‧‧Protrusion 19‧‧‧First installation structure 191‧‧‧Locating post 192‧‧‧Lock hole 2‧‧‧Bus 2'‧‧‧Electrode output 21‧‧‧Electrode connection part 22‧‧‧Buffer convex part 3,3'‧‧‧Battery management board 31‧‧‧Flexible circuit board connector 31'‧‧‧Connector 32 ‧‧‧Main circuit connector 33‧‧‧Second mounting structure 4,4'‧‧‧Flexible circuit board 41,41'‧‧‧Body part 411,411'‧‧‧Mounting hole 412‧‧‧Perforation 42, 42'‧‧‧Flexible connector part 421‧‧‧Conductive wire 423'‧‧‧Another connector 4230'‧‧‧Terminal 43‧‧‧Conductive sheet 44‧‧‧Limiting plate 441‧‧‧Fixed hole 45 ‧‧‧Temperature sensor 5‧‧‧Battery pack 51‧‧‧Battery 52‧‧‧Pole

Other features and effects of the present invention will be clearly presented in the embodiments with reference to the drawings, in which: Figure 1 is a perspective view of an embodiment of the battery connection module of the present invention and a battery pack; Figure 2 is the implementation Example and a three-dimensional exploded view of the battery pack; Figure 3 is a three-dimensional exploded view of the carrier plate and busbar of the embodiment; Figure 4 is a three-dimensional view of the embodiment; Figure 5 is a three-dimensional exploded view of the embodiment Figure 6 is a perspective exploded view of this embodiment, in which a battery management board is not shown; Figure 7 is a perspective exploded view of the flexible circuit board of this embodiment; Figure 8 is another battery connection module of the present invention A perspective view of an embodiment; and FIG. 9 is a perspective view showing details of the flexible plug-in part of the other embodiment.

1‧‧‧Carrier plate

2‧‧‧Mixer

2’‧‧‧Electrode output

3‧‧‧Battery Management Board

4‧‧‧Flexible circuit board

41‧‧‧Main body

42‧‧‧Flexible connector

5‧‧‧Battery pack

51‧‧‧Battery

Claims (15)

A battery connection module suitable for connecting to a battery pack, the battery connection module comprising: a carrying plate; a plurality of bus elements, installed on the carrying plate, suitable for electrically connecting a plurality of batteries of the battery pack; The circuit board is mounted on the carrier plate and is mechanically and electrically connected to the plurality of busbars, and includes a body portion and an extended flexible plug-in portion; and a battery management board mounted on the The carrier plate is located above the flexible circuit board and includes a connector; the end of the flexible plug-in part is connected to the connector on the battery management board. The battery connection module according to claim 1, wherein the flexible insertion part is formed by cutting the body part. The battery connection module according to claim 2, wherein three sides of the flexible plug-in portion are disconnected from the main body portion, so that the flexible plug-in portion is elongated, and the main body portion of the flexible plug-in portion One end is connected to the body part. The battery connection module according to claim 1, wherein the flexible plug-in portion extends from one end edge of the flexible circuit board. The battery connection module according to any one of claims 1 to 4, wherein the connector is a connector for a flexible circuit board, and the flexible plug-in portion has exposed conductive wires to communicate with the flexible circuit The board is plugged in with a connector. The battery connection module according to any one of claims 1 to 4, wherein the flexible plug-in part is installed on another connector to be plugged in corresponding to the connector on the battery management board. The battery connection module according to any one of claims 1 to 4, wherein the carrier plate has an installation position for setting the battery management board, so that the battery management board is located above the flexible circuit board. The battery connection module according to claim 7, wherein the carrier plate has a plurality of first installation structures arranged on the peripheral side of the installation position, and the battery management board has a plurality of first installation structures respectively corresponding to the plurality of first installation structures. The second installation structure of the structure is used to fix the battery management board at the installation position. The battery connection module according to claim 8, wherein the plurality of first installation structures are positioning posts and/or key holes, and the plurality of second installation structures are perforations corresponding to the positioning posts and/or key holes . The battery connection module according to claim 8, wherein the installation position is defined by four bumps, the positions of the plurality of bumps correspond to the four corners of the battery management board, and the first The mounting structures are respectively arranged on the plurality of bumps. The battery connection module according to claim 10, wherein the plurality of first installation structures are positioning posts and/or key holes, and the plurality of second installation structures are perforations corresponding to the positioning posts and/or key holes . The battery connection module according to any one of claims 1 to 4, wherein the flexible circuit board further includes a plurality of bus members connected to the main body part mechanically and electrically, respectively. Conductive sheet. The battery connection module according to any one of claims 1 to 4, wherein the flexible circuit board further includes a plurality of upper limit pieces connected to the main body portion and respectively protruding above the plurality of bus members. The battery connection module according to claim 13, wherein each upper limit piece has a fixing hole, and the carrier plate has a plurality of fixing posts respectively penetrated through the plurality of fixing holes. The battery connection module according to claim 1, wherein the flexible circuit board has a plurality of installation holes, and the carrier plate has a plurality of installation posts respectively penetrated through the plurality of installation holes.

Images