CN216488395U - Battery module - Google Patents

Abstract

The utility model relates to the technical field of batteries, in particular to a battery module which comprises a battery cell, a sampling terminal and a battery management system, wherein the battery cell comprises a lug, the sampling terminal is clamped on the lug to collect sampling voltage of the battery cell, the sampling terminal is in a shape of Chinese character 'ji', and the sampling terminal is electrically connected with the battery management system to transmit sampling voltage signals of the battery cell. This battery module replaces the flexible circuit board with the sampling terminal and obtains the sampling voltage of electric core, and the mode that sampling terminal and utmost point ear adopted the joint replaces welded mode, has not only reduced the material cost, has still simplified production technology, has realized the improvement of production efficiency and economic benefits.

Description

Battery module

Technical Field

The utility model relates to the technical field of batteries, in particular to a battery module.

Background

The existing battery module uses a Flexible Printed Circuit (FPC) to obtain the sampling voltage of the battery cell. The flexible circuit board needs to be arranged inside the module, and needs to be welded with the battery cell lugs or the copper bars on two sides, so that the assembly difficulty is high, the efficiency is low, and the production is difficult. To soft packet of big module battery, still there is flexible circuit board size very long, the production and processing difficulty, problem with high costs.

Therefore, a battery module is needed to solve the above problems.

SUMMERY OF THE UTILITY MODEL

The utility model aims to provide a battery module which can reduce the production cost, reduce the assembly difficulty and ensure the production efficiency and economic benefits.

In order to achieve the purpose, the utility model adopts the following technical scheme:

a battery module, comprising:

a cell comprising a tab;

the sampling terminal is clamped on the lug to collect sampling voltage of the battery cell and is in a shape of Chinese character 'ren';

a battery management system electrically connected with the sampling terminal.

Optionally, still include the setting element, it is a plurality of the sampling terminal interval sets up on the setting element, in order with a plurality of electricity core one-to-one sets up.

Optionally, each sampling terminal all includes two sampling strips, two sampling strips all include with the chucking part that utmost point ear is connected, sampling terminal not with when utmost point ear is connected, two distance between the chucking part is less than the thickness of utmost point ear.

Optionally, the tips of the two sampling bars each include a guide portion, and a distance between the two guide portions is greater than a thickness of the tab.

Optionally, the sampling device further comprises a protective cover, and the protective cover covers one side of the sampling terminal far away from the electrode lug.

Optionally, the positioning member is provided with a plurality of pairs of holes, and each pair of sampling bars passes through a corresponding pair of holes.

Optionally, the sampling terminal further includes a connecting strip, the connecting strip is connected to the two sampling strips, and the connecting strip is connected to the positioning member.

Optionally, the sampling terminal is integrally formed.

Optionally, the surface of the sampling terminal is plated with a nickel layer or a tin layer.

Optionally, the sampling terminal is electrically connected with the battery management system through a flexible circuit board or a cable.

The utility model has the beneficial effects that:

the utility model provides a battery module, which comprises a battery core, a sampling terminal and a battery management system, wherein the battery core comprises a lug, the sampling terminal is clamped on the lug to collect sampling voltage of the battery core, the sampling terminal is in a shape of Chinese character 'ji', and the sampling terminal is electrically connected with the battery management system to transmit sampling voltage signals of the battery core. This battery module replaces the flexible circuit board with the sampling terminal and obtains the sampling voltage of electric core, and the mode that sampling terminal and utmost point ear adopted the joint replaces welded mode, has not only reduced the material cost, has still simplified production technology, has realized the improvement of production efficiency and economic benefits.

Drawings

Fig. 1 is a schematic structural diagram of a battery module according to an embodiment of the present invention;

fig. 2 is a schematic diagram of an internal structure of a battery module according to an embodiment of the present invention;

fig. 3 is a schematic view illustrating the assembly of a sampling terminal and a tab according to an embodiment of the present invention;

FIG. 4 is an assembly view of a sampling terminal and a positioning member according to an embodiment of the present invention;

fig. 5 is a schematic structural diagram of a view angle of a sampling terminal provided by an embodiment of the present invention;

fig. 6 is a schematic structural diagram of another view angle of the sampling terminal according to the embodiment of the present invention.

In the figure:

1. a sampling terminal; 11. a clamping part; 12. a guide portion;

2. a positioning member;

3. an electric core; 31. and (7) a tab.

Detailed Description

The technical scheme of the utility model is further explained by combining the attached drawings and the embodiment. It is to be understood that the specific embodiments described herein are merely illustrative of the utility model and are not limiting of the utility model. It should be further noted that, for the convenience of description, only some but not all of the elements associated with the present invention are shown in the drawings.

In the description of the present invention, it should be noted that unless otherwise explicitly stated or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection or a removable connection; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.

In the present invention, unless otherwise expressly stated or limited, "above" or "below" a first feature means that the first and second features are in direct contact, or that the first and second features are not in direct contact but are in contact with each other via another feature therebetween. Also, the first feature being "on," "above" and "over" the second feature includes the first feature being directly on and obliquely above the second feature, or merely indicating that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature includes the first feature being directly under and obliquely below the second feature, or simply meaning that the first feature is at a lesser elevation than the second feature.

As shown in fig. 1 to 6, the present invention provides a battery module, which includes a casing, wherein a battery core 3, a sampling terminal 1 and a battery management system are disposed in the casing. The sampling terminal 1 is configured to collect a sampling voltage of the electric core 3, and transmit the sampling voltage to a battery management system, so as to know the voltage of the electric core 3. This battery module replaces the flexible circuit board with sampling terminal 1 and obtains the sampling voltage of electric core 3, and sampling terminal 1 adopts the mode of joint to replace welded mode with utmost point ear 31, has not only reduced the material cost, has still simplified production technology, has realized the improvement of production efficiency and economic benefits.

Specifically, the battery cell 3 includes tabs 31, that is, a positive tab and a negative tab, and the sampling terminal 1 is clamped to the tabs 31. Optionally, each sampling terminal 1 includes two sampling bars and a connecting bar, the connecting bar is connected to the two sampling bars, and the sampling terminal 1 is a zigzag shape as a whole. As shown in fig. 6, each of the two sampling strips includes a clamping portion 11 connected to the tab 31, and when the sampling terminal 1 is not connected to the tab 31, the distance between the two clamping portions 11 is smaller than the thickness of the tab 31, that is, the sum of the thicknesses of the positive tab and the negative tab. Because the material of sampling terminal 1 has certain elasticity deformation volume, when sampling terminal 1 was located the assembly position of being connected with utmost point ear 31, two sampling strips when being connected with anodal ear and negative pole ear respectively promptly, two sampling strips will be respectively to positive utmost point ear and negative pole ear certain butt pressure of production to the joint between messenger sampling terminal 1 and the utmost point ear 31 is more firm.

To facilitate the assembly between the sampling terminal 1 and the tab 31, optionally, the tips of both sampling bars include a guide portion 12, and the distance between the two guide portions 12 is greater than the thickness of the tab 31. Namely, the distance between the two sampling strips gradually increases from the clamping part 11 to the guide part 12 to form a flared opening, so that a worker can easily clamp the flared opening on the tab 31 and push the sampling terminal 1 to clamp the tab 31.

Optionally, the sampling terminal 1 is integrally formed to ensure the strength of the sampling terminal 1. Optionally, the surface of the sampling terminal 1 is plated with nickel or tin layer for welding with external nickel plate, and has the function of corrosion resistance.

Because contain a plurality of or multiunit electricity core 3 in the battery module, need set up a plurality of sampling terminal 1, in order to make sampling terminal 1 can assemble in unison, improve production efficiency, optionally, this battery module still includes setting element 2. Specifically, a plurality of sampling terminals 1 are arranged on the positioning member 2 at intervals so as to be arranged in one-to-one correspondence with the plurality of battery cells 3. And sampling terminal 1 and setting element 2 are fixed connection, can guarantee that the distance is unchangeable between a plurality of sampling terminal 1. During assembly, as long as two sampling terminals 1 are ensured to correspond to the corresponding positions of the tabs 31, the other sampling terminals 1 can be ensured to be at the correct positions. The sampling terminals 1 on one positioning piece 2 can be assembled uniformly, and the production efficiency is improved. After the sampling terminal 1 is assembled, the positioning piece 2 is connected to the shell in a connecting mode such as a screw connection mode and the like, so that the relative position of the sampling terminal 1 and the lug 31 is not changed in the subsequent use process, and the quality of a product is improved. Alternatively, the connecting strip of the sampling terminal 1 is connected to the positioning member 2. Optionally, the positioning member 2 is provided with a plurality of pairs of holes, each pair of sampling bars being provided through a corresponding pair of holes. Optionally, the sampling terminal 1 and the positioning member 2 are integrally injection-molded to ensure the connection strength therebetween.

Optionally, the battery module further includes a protective cover, the protective cover is made of an insulating material, and the protective cover is covered on one side of the sampling terminal 1 away from the tab 31, that is, on one side where the positioning member 2 is disposed, so as to protect the sampling terminal 1 and the element connected to the sampling terminal 1.

Optionally, the sampling terminal 1 is electrically connected to the battery management system through a flexible circuit board or a cable, so that the sampling voltage of the battery cell 3 is transmitted to the battery management system through the sampling terminal 1. Optionally, the cable is a flexible flat cable.

It should be understood that the above-described embodiments of the present invention are merely examples for clearly illustrating the present invention, and are not intended to limit the embodiments of the present invention. Other variations and modifications will be apparent to persons skilled in the art in light of the above description. And are neither required nor exhaustive of all embodiments. Any modification, equivalent replacement, and improvement made within the spirit and principle of the present invention should be included in the protection scope of the claims of the present invention.

Claims (10)

1. A battery module, comprising:

an electric core (3), the electric core (3) comprising a tab (31);

the sampling terminal (1), the sampling terminal (1) is clamped to the tab (31) to collect the sampling voltage of the battery core (3), and the sampling terminal (1) is in a shape of Chinese character 'RE';

a battery management system electrically connected with the sampling terminal (1).

2. The battery module according to claim 1, further comprising a positioning member (2), wherein the plurality of sampling terminals (1) are arranged on the positioning member (2) at intervals so as to be arranged in one-to-one correspondence with the plurality of battery cells (3).

3. The battery module according to claim 2, wherein each of the sampling terminals (1) comprises two sampling bars, each of the two sampling bars comprises a clamping portion (11) connected with the tab (31), and a distance between the two clamping portions (11) is smaller than a thickness of the tab (31) when the sampling terminal (1) is not connected with the tab (31).

4. The battery module according to claim 3, wherein the tips of both the spline bars each include a guide portion (12), and a distance between both the guide portions (12) is greater than a thickness of the tab (31).

5. The battery module according to claim 1, further comprising a protective cover provided on a side of the sampling terminal (1) remote from the tab (31).

6. The battery module according to claim 3, wherein the positioning member (2) is provided with a plurality of pairs of holes, and each pair of sampling bars is disposed through a corresponding pair of the holes.

7. The battery module according to claim 6, wherein the sampling terminal (1) further comprises a connecting strip, the connecting strip is connected with the two sampling strips respectively, and the connecting strip is connected with the positioning member (2).

8. The battery module according to claim 7, wherein the sampling terminal (1) is integrally formed.

9. The battery module according to claim 1, wherein the surface of the sampling terminal (1) is plated with a nickel layer or a tin layer.

10. The battery module according to any one of claims 1-9, wherein the sampling terminal (1) is electrically connected to the battery management system by a flexible circuit board or a cable.

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