CN218242186U - Information acquisition module, battery module and battery package - Google Patents

Abstract

The application discloses information acquisition module, battery module and battery package, information acquisition module for the information acquisition of battery module, including circuit board and electrically conductive. The conductive piece comprises a first end, a buffer section and a second end which are sequentially connected, the first end of the conductive piece is electrically connected with the circuit board, and the second end of the conductive piece is used for being electrically connected with the pole of the single battery; the buffer section is capable of bending or stretching to change the distance between the first end and the second end of the conductive member. The utility model provides an information acquisition module can effectively reduce the probability of failure of the electricity connection between circuit board and the battery cell.

Description

Information acquisition module, battery module and battery package

Technical Field

The application relates to the technical field of lithium batteries, in particular to an information acquisition module, a battery module and a battery pack.

Background

The lithium battery has the advantages of large energy storage, long service life, small self-discharge coefficient, wide temperature application range and the like, so that the lithium battery is favored by people and gradually replaces other traditional batteries in the fields of energy storage and power batteries.

In the related art, in order to complete signal acquisition (for example, voltage acquisition, temperature acquisition, current acquisition, and the like) of a battery module, an electrical connection needs to be performed between a circuit board and a single battery. When battery module produced the vibration, produced relative displacement easily between circuit board and the battery cell, lead to the electric connection between circuit board and the battery cell to lose efficacy easily, and then lead to the unable normal collection of signal of battery module.

SUMMERY OF THE UTILITY MODEL

The present application is directed to solving at least one of the problems in the prior art. Therefore, the application provides an information acquisition module which can effectively reduce the failure probability of the electric connection between a circuit board and a single battery.

The application also provides a battery module with the information acquisition module.

The application also provides a battery pack with the battery module.

According to the information acquisition module of the first aspect embodiment of this application for the information acquisition of battery module, include:

a circuit board;

the conductive piece comprises a first end, a buffer section and a second end which are sequentially connected, the first end of the conductive piece is electrically connected with the circuit board, and the second end of the conductive piece is used for being electrically connected with a pole of the single battery; the buffer section is capable of bending or stretching to change the distance between the first end and the second end of the conductive member.

According to the information acquisition module of the embodiment of the application, at least the following beneficial effects are achieved: the conductive member includes a buffer section capable of bending or stretching to change a distance between the first end and the second end of the conductive member; therefore, when relative displacement is generated between the circuit board and the single battery, the buffer section of the conductive piece can deform to adapt to the displacement change between the circuit board and the single battery, so that the electric connection between the circuit board and the single battery is ensured to be effective, and the failure probability of the electric connection between the circuit board and the single battery is reduced.

According to some embodiments of this application, the buffer segment includes first segmental arc, straightway and the second segmental arc that connects gradually, first segmental arc is kept away from the one end of straightway with first end is connected, the second segmental arc is kept away from the one end of straightway with the second end is connected.

According to some embodiments of the application, the bumper segment is provided with at least one lightening hole, and each lightening hole extends along the length direction of the bumper segment.

According to some embodiments of the present application, the first end, the buffer section, and the second end are integrally connected.

According to some embodiments of the application, the buffer section is "S" shaped, "C" shaped or "Z" shaped.

According to some embodiments of the application, the circuit board is provided with a pad, and the first end of the conductive member comprises a first nickel plate, and the first nickel plate is welded and fixed with the pad.

According to some embodiments of the present application, the buffer section includes a flexible circuit board or a flexible flat cable, and one end of the flexible circuit board or the flexible flat cable is electrically connected to the first nickel plate.

According to the battery module of the embodiment of the second aspect of the present application, including:

the battery cell comprises a plurality of battery cells, wherein each battery cell comprises a pole;

in the above information collecting module, the conductive members are plural, and the second end of each conductive member is electrically connected to the post.

According to the battery module of this application embodiment, have following beneficial effect at least: through using foretell information acquisition module, be favorable to reducing the failure probability of the electric connection between circuit board and the battery cell, the probability that battery module dimension electric connection became invalid is lower.

According to some embodiments of the application, still include the nut, electrically conductive the second end includes the second nickel piece, the second nickel piece is equipped with the through-hole, utmost point post includes the double-screw bolt, the double-screw bolt is worn to establish in the through-hole, just the double-screw bolt with nut threaded connection, the second nickel piece with the nut contact.

A battery pack according to an embodiment of a third aspect of the present application includes:

the battery box is provided with an accommodating cavity;

in the battery module, the battery modules are arranged in the accommodating cavity in a plurality.

According to the battery pack of the embodiment of the application, at least the following beneficial effects are achieved: through using foretell battery module, the probability that the battery package electricity is connected inefficacy is lower.

Additional aspects and advantages of the present application will be set forth in part in the description which follows and, in part, will be obvious from the description, or may be learned by practice of the present application.

Drawings

The present application is further described with reference to the following figures and examples, in which:

fig. 1 is a perspective view of an information acquisition module according to an embodiment of the present application;

FIG. 2 is an exploded view of the information acquisition module of FIG. 1;

FIG. 3 is a perspective view of a conductive member of the information acquisition module of FIG. 1;

FIG. 4 is a schematic diagram of a conductive member of the information acquisition module of FIG. 1;

FIG. 5 is a schematic diagram of the conductive member of the information acquisition module of FIG. 1 with a buffer section in an "S" shape;

FIG. 6 is a schematic view of the conductive member of the information acquisition module of FIG. 1 with a buffer section in the shape of a "C";

FIG. 7 is a schematic view of the conductive member of the information acquisition module of FIG. 1 with a buffer section in the shape of a "Z";

fig. 8 is a perspective view of a battery module according to a first embodiment of the present application;

fig. 9 is an exploded view of the battery module of fig. 8;

fig. 10 is a perspective view of a battery module according to a second embodiment of the present application;

FIG. 11 is an enlarged view of a portion of the area I in FIG. 10;

fig. 12 is an exploded view of the battery module of fig. 10;

fig. 13 is a schematic diagram of a battery pack according to an embodiment of the present application.

Reference numerals: circuit board 100, pad 110;

conductive element 200, first end 210, buffer section 220, second end 230, lightening hole 221, first arc-shaped section 222, straight section 223, second arc-shaped section 224 and through hole 231;

a bus bar 400;

the single battery 500, the pole 510 and the stud 511;

a box body 600 and a containing groove 610;

a nut 700;

battery box 800, accommodation chamber 810.

Detailed Description

Reference will now be made in detail to embodiments of the present application, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the accompanying drawings are illustrative and are only for the purpose of explaining the present application and are not to be construed as limiting the present application.

In the description of the present application, it is to be understood that the positional descriptions, such as the directions of up, down, front, rear, left, right, etc., referred to herein are based on the directions or positional relationships shown in the drawings, and are only for convenience of description and simplification of description, and do not indicate or imply that the referred device or element must have a specific direction, be constructed and operated in a specific direction, and thus, should not be construed as limiting the present application.

In the description of the present application, the meaning of a plurality is one or more, the meaning of a plurality is two or more, and the above, below, exceeding, etc. are understood as excluding the present number, and the above, below, within, etc. are understood as including the present number. If the first and second are described for the purpose of distinguishing technical features, they are not to be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated or implicitly indicating the precedence of the technical features indicated.

In the description of the present application, unless otherwise expressly limited, terms such as set, mounted, connected and the like should be construed broadly, and those skilled in the art can reasonably determine the specific meaning of the terms in the present application by combining the detailed contents of the technical solutions.

In the description of the present application, reference to the description of the terms "one embodiment," "some embodiments," "an illustrative embodiment," "an example," "a specific example," or "some examples," etc., means that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the present application. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

Referring to fig. 1 to 3, an information acquisition module according to an embodiment of a first aspect of the present application, for acquiring information of a battery module, includes a circuit board 100 and a conductive member 200. The conductive member 200 includes a first end 210, a buffer section 220, and a second end 230 (see fig. 3) connected in sequence, the first end 210 of the conductive member 200 is electrically connected to the circuit board 100, and the second end 230 of the conductive member 200 is used to electrically connect to the terminal post 510 of the battery cell 500 (see fig. 9). Buffer section 220 is capable of bending or stretching to change the distance between first end 210 and second end 230 of conductive member 200.

The information acquisition module according to the embodiment of the application has at least the following beneficial effects: conductive element 200 includes a buffer section 220, buffer section 220 being capable of bending or stretching to change the distance between first end 210 and second end 230 of conductive element 200; therefore, when relative displacement is generated between the circuit board 100 and the single battery 500, the buffer section 220 of the conductive member 200 deforms to adapt to the displacement change between the circuit board 100 and the single battery 500, so that the electrical connection between the circuit board 100 and the single battery 500 is ensured to be effective, that is, the failure probability of the electrical connection between the circuit board 100 and the single battery 500 is reduced.

Specifically, the information acquisition module can be installed to the battery module, and the battery package that the battery module is constituteed can be installed to electric automobile, and electric automobile is at the in-process of traveling, because the vibration of motor and the influence of road conditions inequality factor, produces relative displacement easily between circuit board 100 and the battery cell 500.

In the related art, the conductive device 200 is not provided with the buffer section 220, when the displacement between the circuit board 100 and the single battery 500 becomes large, the conductive device 200 is easily pulled, the conductive device 200 is easily broken, the electrical connection structure between the conductive device 200 and the circuit board 100 and the electrical connection structure between the conductive device 200 and the single battery 500 are easily damaged, and the electrical connection between the circuit board 100 and the single battery 500 is easily failed. In addition, when the displacement between the circuit board 100 and the single battery 500 is reduced, if the conductive device 200 cannot be bent, the conductive device 200 itself is easily damaged by compression, and the conductive device 200 may impact the electrical connection structure between the conductive device 200 and the circuit board 100 and impact the electrical connection structure between the conductive device 200 and the single battery 500, so that the electrical connection between the circuit board 100 and the single battery 500 is easily failed.

In the embodiment of the present application, when the displacement between the circuit board 100 and the single battery 500 becomes large, the buffer section 220 extends, the connection point of the conductive device 200 and the circuit board 100, the connection point of the conductive device 200 and the single battery 500, and the conductive device 200 itself are not pulled, and the electrical connection between the circuit board 100 and the single battery 500 is not easily failed.

In the embodiment of the present application, when the displacement between the circuit board 100 and the single battery 500 becomes small, the buffer section 220 is bent, the connection point between the conductive member 200 and the circuit board 100, and the connection point between the conductive member 200 and the single battery 500 are not easily pressed by the conductive member 200, and the electrical connection between the circuit board 100 and the single battery 500 is not easily failed.

Referring to fig. 3 and 4, in some embodiments of the present application, the buffer section 220 includes a first arc-shaped section 222, a straight section 223 and a second arc-shaped section 224 which are connected in sequence, wherein an end of the first arc-shaped section 222 away from the straight section 223 is connected with the first end 210, and an end of the second arc-shaped section 224 away from the straight section 223 is connected with the second end 230.

Therefore, the first end 210 and the straight line segment 223 form an angle, the second end 230 and the straight line segment 223 form an angle, and the buffer segment 220 is substantially in a zigzag shape. When there is a relative displacement between the first end 210 and the second end 230, the first arc-shaped section 222 and the second arc-shaped section 224 will bend and deform, the straight section 223 can swing, and the buffer section 220 can be telescopic as a whole, so as to buffer the relative displacement between the first end 210 and the second end 230. For example, when the first end 210 and the second end 230 approach each other, the first arc-shaped segment 222 and the second arc-shaped segment 224 bend and become smaller in curvature, and when viewed from top to bottom, the straight line segment 223 will swing around the vertical axis in a clockwise direction, and the buffer segment 220 is shortened as a whole; when the first end 210 and the second end 230 are far away from each other, the first arc-shaped segment 222 and the second arc-shaped segment 224 are bent and the curvature is increased, and when viewed from the top to the bottom, the straight segment 223 will swing around the axis in the up-down direction along the counterclockwise direction, and the whole buffer segment 220 is extended.

In addition, the first arc-shaped section 222 can be connected with the first end 210 and the straight section 223, and the second arc-shaped section 224 can be connected with the second end 230 and the straight section 223. Therefore, the structure in which the first arc-shaped section 222, the straight section 223 and the second arc-shaped section 224 are connected in sequence can better achieve the function of buffering the relative displacement between the first end 210 and the second end 230, and the buffering section 220 is not prone to the problem of stress concentration, thereby being beneficial to prolonging the service life of the conductive device 200.

Referring to fig. 3, in some embodiments of the present application, the buffer section 220 is provided with at least one lightening hole 221, and each lightening hole 221 extends along the length direction of the buffer section 220.

When the first end 210 and the second end 230 approach each other, the respective portions of the buffer section 220 may be subjected to bending deformation, compression deformation, or tensile deformation. If the buffer section 220 is not provided with the lightening hole 221, the bending strength, the compressive strength and the tensile strength of the buffer section 220 are all high, which is embodied that each part of the buffer section 220 is not easy to deform, and the deformation of the buffer section 220 is insufficient, so that the buffer effect of the buffer section 220 is not good. By arranging the lightening holes 221, the bending strength, the compression strength and the tensile strength of the buffer section 220 can be reduced, each part of the buffer section 220 can be deformed sufficiently in time, and the buffer effect of the buffer section 220 is good.

In addition, the weight of the buffer section 220 can be reduced and the material can be saved by providing the lightening hole 221.

Referring to fig. 3, in some embodiments of the present application, the first end 210, the buffer section 220, and the second end 230 are integrally connected.

The first end 210, the buffer section 220 and the second end 230 are integrally connected, so that the connecting process among the first end 210, the buffer section 220 and the second end 230 can be reduced. In addition, since the process for connecting the first end 210, the buffer section 220 and the second end 230 may be faulty (for example, the welding may have a problem of cold joint and false joint) due to the welding connection, the integral connection may also reduce the probability of the electrical connection failure between the first end 210, the buffer section 220 and the second end 230.

Specifically, the conductive member 200 may be formed by machining a large-sized metal strip. Compared with the welding connection of the first end 210, the buffer section 220 and the second end 230, the machining process is less, the production efficiency is high, and therefore the machining cost of the conductive member 200 is reduced.

Specifically, the conductive member 200 is made of nickel, and the conductive member 200 made of nickel is not easy to rust, which is beneficial to prolonging the service life of the conductive member 200.

Referring to fig. 5-7, in some embodiments of the present application, the buffer section 220 is "S" shaped, "C" shaped, or "Z" shaped. The S-shaped, C-shaped or Z-shaped buffer section 220 can be stretched, and the buffer section 220 is regular in shape and convenient to process, for example, the S-shaped, C-shaped or Z-shaped buffer section 220 can be processed by punching nickel sheets at one time.

Referring to fig. 10 to 12, in some embodiments of the present application, the circuit board 100 is provided with a pad 110, and the first end 210 of the conductive member 200 includes a first nickel plate, and the first nickel plate is welded to the pad 110.

The first end 210 of the conductive member 200 is welded and fixed to the pad 110, the connection strength between the conductive member 200 and the circuit board 100 is high, the first end 210 of the conductive member 200 is not easily separated from the circuit board 100, and the electrical connection between the conductive member 200 and the circuit board 100 is not easily failed. The first end 210 of the conductive member 200 includes a first nickel plate, which is not easy to rust, and the first nickel plate can maintain a stable electrical connection with the bonding pad 110 for a long time, that is, the conductive member 200 and the circuit board 100 can maintain a stable electrical connection for a long time.

In a modification of the above embodiment, the buffer section 220 includes a flexible circuit board or a flexible flat cable, and one end of the flexible circuit board or the flexible flat cable is electrically connected to the first nickel plate. A Flexible Circuit board, that is, an FPC (Flexible Printed Circuit), and a Flexible Flat Cable, that is, an FFC (Flexible Flat Cable). The flexible circuit board and the flexible flat cable are both flexible conductors, and by making the length of the flexible circuit board or the flexible flat cable longer than the shortest connection length between the first end 210 and the second end 230, the extra section of the flexible circuit board or the flexible flat cable can be bent and extended, so that the extra section of the flexible circuit board or the flexible flat cable is the buffer section 220, and the flexible circuit board and the flexible flat cable are flexible conductors, so that the extension and retraction can be realized.

Referring to fig. 8 and 9, a battery module according to an embodiment of the second aspect of the present application includes a single battery 500 and the above-described information collection module. The unit cell 500 is provided in plurality, and each unit cell 500 includes a pole 510. The conductive members 200 are provided in plurality, and the second end 230 of each conductive member 200 is electrically connected to the pole 510.

According to the battery module of this application embodiment, have following beneficial effect at least: through using the above-mentioned information acquisition module, be favorable to reducing the probability of failure of the electric connection between circuit board 100 and cell 500, the probability of battery module electric connection failure is lower.

Specifically, the battery module further includes a bus bar 400 and a case body 600, the case body 600 is provided with a receiving groove 610, and each of the unit batteries 500 is arranged in the receiving groove 610. The bus bar 400 is used to achieve electrical connection between adjacent two unit batteries 500.

Referring to fig. 8 and 9, in some embodiments of the present application, the battery module further includes a nut 700, the second end 230 of the conductive member 200 includes a second nickel plate, the second nickel plate is provided with a through hole 231, the pole column 510 includes a stud 511, the stud 511 is inserted into the through hole 231, the stud 511 is in threaded connection with the nut 700, and the second nickel plate is in contact with the nut 700.

From this, be connected for dismantling between the second end 230 of electrically conductive 200 and the utmost point post 510 and be connected, when the information acquisition module became invalid, can dismantle, replace the information acquisition module to reduce battery module's cost of maintenance. In addition, the information acquisition module can be dismantled and retrieve to be favorable to realizing the echelon utilization of battery module.

Referring to fig. 13, a battery pack according to an embodiment of the third aspect of the present application includes a battery case 800 and the above-described battery module. The battery case 800 is provided with a receiving cavity 810. The battery module is provided with a plurality of battery modules, and the plurality of battery modules are arranged in the accommodating cavity 810.

According to the battery pack of the embodiment of the application, at least the following beneficial effects are achieved: by using the battery module, the probability of the electrical connection failure of the battery pack is lower.

The embodiments of the present application have been described in detail with reference to the drawings, but the present application is not limited to the embodiments, and various changes can be made within the knowledge of those skilled in the art without departing from the spirit of the present application. Furthermore, the embodiments and features of the embodiments of the present application may be combined with each other without conflict.

Claims (10)

1. Information acquisition module for the information acquisition of battery module, its characterized in that includes:

a circuit board;

the conductive piece comprises a first end, a buffer section and a second end which are sequentially connected, wherein the first end of the conductive piece is electrically connected with the circuit board, and the second end of the conductive piece is used for being electrically connected with a pole of the single battery; the buffer section is capable of bending or stretching to change the distance between the first end and the second end of the conductive member.

2. The information acquisition module according to claim 1, wherein the buffer segment comprises a first arc segment, a straight segment and a second arc segment which are connected in sequence, wherein one end of the first arc segment, which is far away from the straight segment, is connected with the first end, and one end of the second arc segment, which is far away from the straight segment, is connected with the second end.

3. The information acquisition module according to claim 1 or 2, wherein the buffer section is provided with at least one lightening hole, each lightening hole extending in a length direction of the buffer section.

4. The information acquisition module of claim 1, wherein the first end, the buffer section, and the second end are integrally connected.

5. The information acquisition module of claim 1, wherein the buffer section is "S" shaped, "C" shaped, or "Z" shaped.

6. The information acquisition module of claim 1, wherein the circuit board is provided with a pad, and the first end of the conductive member comprises a first nickel plate, and the first nickel plate is welded and fixed with the pad.

7. The information acquisition module of claim 6, wherein the buffer section comprises a flexible circuit board or a flexible flat cable, one end of the flexible circuit board or the flexible flat cable being electrically connected to the first nickel plate.

8. Battery module, its characterized in that includes:

the battery cell comprises a plurality of battery cells, wherein each battery cell comprises a pole;

the information acquisition module of any one of claims 1 to 7, the conductive member being provided in plurality, the second end of each conductive member being electrically connected to the pole.

9. The battery module according to claim 8, further comprising a nut, wherein the second end of the conductive member comprises a second nickel plate, the second nickel plate is provided with a through hole, the pole comprises a stud, the stud is inserted into the through hole and is in threaded connection with the nut, and the second nickel plate is in contact with the nut.

10. A battery pack, comprising:

the battery box is provided with an accommodating cavity;

the battery module according to claim 8 or 9, which is provided in plurality, the plurality of battery modules being arranged in the receiving cavity.

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